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Journal articles on the topic 'Ventricles'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Erdener, Timurkaynak, L. Rhoton Albert, and Barry Margaret. "Microsurgical Anatomy and Operative Approaches to the Lateral Ventricles." Neurosurgery 19, no. 5 (1986): 685–723. http://dx.doi.org/10.1227/00006123-198611000-00001.

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Abstract The anatomy needed to plan microoperative approaches to the lateral ventricles was examined in 20 cadaveric cerebral hemispheres. The neural, arterial, and venous structures in the walls of the lateral ventricles and the relationship of the lateral ventricles to the third ventricle and basal cisterns were examined. The operative approaches to the lateral ventricle are reviewed.

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Shapoval, Lyudmila. "Atrioventricular junction symmetry in children with different anatomical variants of atrioventricular communication: echocardiographic parameters." Radiation Diagnostics, Radiation Therapy, no. 3 (2019): 15–23. http://dx.doi.org/10.37336/2707-0700-2019-3-1.

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Atrioventricular (AVC) communication is a group of congenital heart diseases with common atrioventricular connection. The symmetry of the connection and, as a result, anatomy and physiology of atrio-ventricular infl ow plays the key role in possibility of double-ventricle correction in this anomaly. Nowadays there is tendency to mix new concepts with described parameters that characterize AVC in one whole guidelines. The ultimate pathway has to be the one that minimizes morbidity and mortality outcomes. In the article author present the correlation between main cardiac echocardiography measure

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Kurtcuoglu, Vartan, Dimos Poulikakos, and Yiannis Ventikos. "Computational Modeling of the Mechanical Behavior of the Cerebrospinal Fluid System." Journal of Biomechanical Engineering 127, no. 2 (2004): 264–69. http://dx.doi.org/10.1115/1.1865191.

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A computational fluid dynamics (CFD) model of the cerebrospinal fluid system was constructed based on a simplified geometry of the brain ventricles and their connecting pathways. The flow is driven by a prescribed sinusoidal motion of the third ventricle lateral walls, with all other boundaries being rigid. The pressure propagation between the third and lateral ventricles was examined and compared to data obtained from a similar geometry with a stenosed aqueduct. It could be shown that the pressure amplitude in the lateral ventricles increases in the presence of aqueduct stenosis. No differenc

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4

Pipitone, Salvatore. "Superoinferior ventricles with superior left ventricle." Journal of Cardiovascular Medicine 13, no. 9 (2012): 607–13. http://dx.doi.org/10.2459/jcm.0b013e3283515bf6.

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5

Bernal-Ramirez, Judith, Magda C. Díaz-Vesga, Matias Talamilla, et al. "Exploring Functional Differences between the Right and Left Ventricles to Better Understand Right Ventricular Dysfunction." Oxidative Medicine and Cellular Longevity 2021 (August 28, 2021): 1–21. http://dx.doi.org/10.1155/2021/9993060.

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The right and left ventricles have traditionally been studied as individual entities. Furthermore, modifications found in diseased left ventricles are assumed to influence on right ventricle alterations, but the connection is poorly understood. In this review, we describe the differences between ventricles under physiological and pathological conditions. Understanding the mechanisms that differentiate both ventricles would facilitate a more effective use of therapeutics and broaden our knowledge of right ventricle (RV) dysfunction. RV failure is the strongest predictor of mortality in pulmonar

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6

Austin, Publishing Group. "Imaging Features of Choroid Plexus Hyperplasia." Austin Journal of Radiology 11, no. 3 (2024): 1236. https://doi.org/10.26420/austinjradiol.2024.1236.

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35-year-old female presented to the emergency department with 2 weeks history of headache and abnormal gait. Neurological examination revealed no sensory or motor deficits. Computer Tomography (CT) of the brain was requested in the emergency setting and showed diffuse dilatation of the lateral ventricles, third ventricle and fourth ventricle suggestive of communicating hydrocephalus. There is also diffuse enlargement of choroid plexuses in the lateral ventricles with extension into the third ventricle (Figure 1).

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7

Dezena, Roberto Alexandre. "Endoscopic anatomy of the ventricles." Archives of Pediatric Neurosurgery 5 (December 27, 2023): e1322022. http://dx.doi.org/10.46900/apn.v5suppl1.132.

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The cerebral ventricles are structures known since antiquity. At the beginning of its description there was a belief that human thoughts and intellect were generated inside the ventricular cavity, and this idea persisted even after the Renaissance. In this period after the Dark Ages, the anatomical description of the ventricles evolved a lot, but it took a long time to conclude the true liquid nature of the ventricular content. The ventricles are divided into lateral, third and fourth ventricles, and each of these regions presents communications between themselves and very precise limits. For

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Ogiwara, Hideki, and Nobuhito Morota. "Flexible endoscopy for management of intraventricular brain tumors in patients with small ventricles." Journal of Neurosurgery: Pediatrics 14, no. 5 (2014): 490–94. http://dx.doi.org/10.3171/2014.7.peds13648.

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Object Endoscopic surgery is generally withheld in patients with small ventricles due to difficulties in ventricular cannulation and intraventricular manipulation. The effectiveness of flexible endoscopy for management of intraventricular brain tumors in patients with small ventricles was evaluated. Methods Forty-five patients who underwent endoscopic surgery with a flexible endoscope for intraventricular brain tumors were divided into small-ventricle and ventriculomegaly groups according to the frontal and occipital horn ratio (FOR). Retrospective review of these cases was performed and achie

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Sethi, R., K. S. Dhalla, R. E. Beamish, and N. S. Dhalla. "Differential changes in left and right ventricular adenylyl cyclase activities in congestive heart failure." American Journal of Physiology-Heart and Circulatory Physiology 272, no. 2 (1997): H884—H893. http://dx.doi.org/10.1152/ajpheart.1997.272.2.h884.

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The status of beta-adrenergic receptors and adenylyl cyclase in crude membranes from both left and right ventricles was examined when the left coronary artery in rats was occluded for 4, 8, and 16 wk. The adenylyl cyclase activity in the presence of isoproterenol was decreased in the uninfarcted (viable) left ventricle and increased in the right ventricle subsequent to myocardial infarction. The density of beta1-adrenergic receptors, unlike beta2-receptors, was reduced in the left ventricle, whereas no change in the characteristics of beta1- and beta2-adrenergic receptors was seen in the right

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10

Andelova, Katarina, Matus Sykora, Veronika Farkasova, et al. "Acclimation of Hairless Spontaneously Hypertensive Rat to Ambient Temperature Attenuates Hypertension-Induced Pro-Arrhythmic Downregulation of Cx43 in the Left Heart Ventricle of Males." Biomolecules 14, no. 12 (2024): 1509. http://dx.doi.org/10.3390/biom14121509.

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Objectives: Due to poor treatment adherence and lifestyle-based interventions, chronic hypertension is a dominant risk factor predisposing individuals to heart failure and malignant arrhythmias. We investigated the impact of the postnatal acclimation of hairless SHR to ambient temperature that is, for them, below thermoneutrality, on the electrical coupling protein connexin-43 (Cx43) and pro-fibrotic markers in both heart ventricles of male and female hairless SHR rats compared to the wild SHR. Methods: Some 6-month-acclimated male and female hairless SHR as well as age- and sex-matched wild S

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Anderson, Robert H., Timothy J. Mohun, and Antoon F. M. Moorman. "What is a ventricle?" Cardiology in the Young 21, S2 (2011): 14–22. http://dx.doi.org/10.1017/s1047951111001387.

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AbstractOn the basis of both developmental and morphological evidence, we would suggest that a ventricle is best defined as any chamber within the ventricular mass possessing an apical trabecular component. Such ventricles can be of right or left morphology, and always coexist. The ventricles are normally formed when possessing all three of the inlet, apical trabecular, and outlet components, but incomplete when lacking one or both of the inlet and outlet components. Ventricles that are incomplete because of lack of the inlet component are always hypoplastic, with incomplete right ventricles b

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Nakazawa, Ken, Yutaka Kusuya, and Koki Shigenobu. "Developmental increase in the inotropic and cyclic AMP response to isoproterenol in embryonic and newly hatched chicks." Canadian Journal of Physiology and Pharmacology 67, no. 9 (1989): 1109–11. http://dx.doi.org/10.1139/y89-176.

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The cyclic adenosine 3′,5′-monophosphate (cyclic AMP) levels of ventricles isolated from 15- to 20-day-old chick embryos and 0- to 3-day-old hatched chicks were compared to clarify the mechanism underlying the change in sensitivity to isoproterenol during perinatal developmental stages when the functional sympathetic innervation has been completely achieved. Isoproterenol produced a positive inotropic effect on ventricles isolated from both embryonic and hatched chicks, but the ventricles from the hatched chicks were more sensitive. At both developmental stages sotalol was an equipotent antago

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Iliev, Alexandar A., Georgi N. Kotov, Boycho V. Landzhov, Lazar S. Jelev, Iva N. Dimitrova, and Dimka V. Hinova-Palova. "A Comparative Quantitative Analysis of the Postnatal Changes in the Myocardium of the Left and Right Ventricles in Rats." Folia Medica 60, no. 2 (2018): 226–33. http://dx.doi.org/10.1515/folmed-2017-0089.

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Abstract Background: The growth of the heart during the foetal and early postnatal development takes places mainly due to hyperplasia. The late postnatal development is characterised by cardiomyocytic hypertrophy in response to normal physiological mechanisms and increased load. To study the cell size most authors measure the diameter either directly or indirectly. Aim: The aim of the present study was to make a comparative quantitative analysis of the postnatal changes observed in the left and right ventricles in rat by evaluating the changes in three morphometric parameters – thickness of th

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14

Chen, Li-Jun, Zhi-Rong Tong, Qian Wang, Yu-Qi Zhang, and Jin-Long Liu. "Feasibility of Computational Fluid Dynamics for Evaluating the Intraventricular Hemodynamics in Single Right Ventricle Based on Echocardiographic Images." BioMed Research International 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/1042038.

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This study introduced a combined computational fluid dynamics (CFD) and echocardiography methodology to simulate blood flow in the single right ventricle (SRV) and normal ventricles to study the intraventricular flow. Derived from echocardiographic image loops, CFD-based three-dimensional (3D) flow models of normal subject’s left ventricle (LV) and right ventricle (RV) and SRV with and without heart failure at three characteristic diastolic statuses were reconstructed. The CFD derived morphological and functional measurements in normal ventricles and the SRV were validated with echocardiograph

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15

Helwan, Abdulkader, and Dilber Uzun Ozsahin. "Sliding Window Based Machine Learning System for the Left Ventricle Localization in MR Cardiac Images." Applied Computational Intelligence and Soft Computing 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/3048181.

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The most commonly encountered problem in vision systems includes its capability to suffice for different scenes containing the object of interest to be detected. Generally, the different backgrounds in which the objects of interest are contained significantly dwindle the performance of vision systems. In this work, we design a sliding windows machine learning system for the recognition and detection of left ventricles in MR cardiac images. We leverage on the capability of artificial neural networks to cope with some of the inevitable scene constraints encountered in medical objects detection t

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Przyborowska, Paulina, Zbigniew Adamiak, and Yauheni Zhalniarovich. "Quantification of cerebral lateral ventricular volume in cats by low- and high-field MRI." Journal of Feline Medicine and Surgery 19, no. 10 (2016): 1080–86. http://dx.doi.org/10.1177/1098612x16676434.

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Objectives The aim of this study was to evaluate variations in lateral ventricles in the examined feline population with the use of quantitative analysis methods to determine whether sex or body weight influenced the size of the ventricles, and to identify any significant differences in the results of low- and high-field MRI. Methods Twenty healthy European Shorthair cats, aged 1–3 years, with body weights ranging from 2.85–4.35 kg, were studied. MRI of brain structures was performed in a low- and a high-field MRI system. The height of the brain and lateral ventricles at the level of the inter

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Shimura, Daisuke, Gaku Nakai, Qibin Jiao, et al. "Metabolomic profiling analysis reveals chamber-dependent metabolite patterns in the mouse heart." American Journal of Physiology-Heart and Circulatory Physiology 305, no. 4 (2013): H494—H505. http://dx.doi.org/10.1152/ajpheart.00867.2012.

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Energy of the cardiac muscle largely depends on fatty acid oxidation. It is known that the atrium and ventricle have chamber-specific functions, structures, gene expressions, and pathologies. The left ventricle works as a high-pressure chamber to pump blood toward the body, and its muscle wall is thicker than those of the other chambers, suggesting that energy utilization in each of the chambers should be different. However, a chamber-specific pattern of metabolism remains incompletely understood. Recently, innovative techniques have enabled the comprehensive analysis of metabolites. Therefore

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Mirsharopov, Utkur, Mushtariy Nuryogdiyeva, Sayora Akhmedova, and Aziza Nisanbayeva. "Changes in the brain of the fetus during the screening study." BIO Web of Conferences 65 (2023): 05009. http://dx.doi.org/10.1051/bioconf/20236505009.

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In 160 fetuses the width of the transparent septum, lateral ventricles and IV ventricle prenatally during ultrasound examination were studied. Pregnant women were divided into two groups, the main group consisted of pregnant women in a state of hypothyroidism, the control group included women with uncomplicated pregnancy. The analysis of our data showed that in hypothyroid pregnant women there is an expansion of the cavity of the transparent septum, lateral ventricles and the anteroposterior size of the IV ventricle compared with the control group.

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Jarjees Ahmed, Idrees. "Measurements of Normal Cerebral Ventricles in Adults in Erbil, Iraq, Based on Computerized Tomography." International Journal of Basic Science in Medicine 9, no. 3 (2024): 102–6. https://doi.org/10.34172/ijbsm.47679.

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Introduction: The measurement of cerebral ventricle size is crucial for diagnosing and differentiating early stages of abnormal ventricular dilatation. This study aimed to establish a reference database for normal cerebral ventricle sizes in adults in Erbil, considering different age groups and genders. Methods: A retrospective cross-sectional analysis was conducted at a tertiary care hospital in Erbil from January 2022 to December 2024. Computerized tomography (CT) scans of 173 adults (83 males and 90 females) aged 18–99 years underwent analysis. The dimensions of ventricles were measured usi

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Togi, Kiyonori, Takahiro Kawamoto, Ryoko Yamauchi, Yoshinori Yoshida, Toru Kita, and Makoto Tanaka. "Role of Hand1/eHAND in the Dorso-Ventral Patterning and Interventricular Septum Formation in the Embryonic Heart." Molecular and Cellular Biology 24, no. 11 (2004): 4627–35. http://dx.doi.org/10.1128/mcb.24.11.4627-4635.2004.

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ABSTRACT Molecular mechanisms for the dorso-ventral patterning and interventricular septum formation in the embryonic heart are unknown. To investigate a role of Hand1/eHAND in cardiac chamber formation, we generated Hand1/eHAND knock-in mice where Hand1/eHAND cDNA was placed under the control of the MLC2V promoter. In Hand1/eHAND knock-in mice, the outer curvature of the right and left ventricles expanded more markedly. Moreover, there was no interventricular groove or septum formation, although molecularly, Hand1/eHAND knock-in hearts had two ventricles. However, the morphology of the inner

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Bankier, Robert G. "Third Ventricle Size and Dementia in Schizophrenia." British Journal of Psychiatry 147, no. 3 (1985): 241–45. http://dx.doi.org/10.1192/bjp.147.3.241.

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Using an ultrasound technique, the widths of the third ventricle in a group of normal subjects was compared with groups of chronic schizophrenics and acutely ill schizophrenics. While the chronic patients showed a significantly wider ventricle (p < 0.5) from the other two groups, only 14% of the chronic patients had a third ventricle greater than the accepted normal maximum of 8 mm. Neuropsychological tests confirmed organic brain impairment in both chronic and acutely ill patients but there was no significant difference between chronic patients with large ventricles and those with normal s

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Godkov, I. M., and V. G. Dashyan. "ENDOSCOPIC INTRAVENTRICULAR HEMORRHAGE REMOVAL: CLINICAL OBSERVATION AND TECHNICAL FEATURES." Russian journal of neurosurgery 21, no. 2 (2019): 45–52. http://dx.doi.org/10.17650/1683-3295-2019-21-2-45-52.

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The study objective is to describe a successful endoscopic therapy for a patient with hypertensive ventricular hemorrhage complicated by occlusive third ventricular hydrocephalus. Materials and methods. A 71-year-old patient with hypertensive hemorrhage into the III and IV ventricles, complicated by non-communicating hydrocephalus, was brought to hospital on the 1st day of the disease onset. Non-communicating hydrocephalus was accompanied by clinical signs of decompensation, depressed level of consciousness up to moderate coma (Glasgow Coma Scale score of 7). Specialists performed emergency en

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Eichele, Gregor, Eberhard Bodenschatz, Zuzana Ditte, et al. "Cilia-driven flows in the brain third ventricle." Philosophical Transactions of the Royal Society B: Biological Sciences 375, no. 1792 (2019): 20190154. http://dx.doi.org/10.1098/rstb.2019.0154.

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The brain ventricles are interconnected, elaborate cavities that traverse the brain. They are filled with cerebrospinal fluid (CSF) that is, to a large part, produced by the choroid plexus, a secretory epithelium that reaches into the ventricles. CSF is rich in cytokines, growth factors and extracellular vesicles that glide along the walls of ventricles, powered by bundles of motile cilia that coat the ventricular wall. We review the cellular and biochemical properties of the ventral part of the third ventricle that is surrounded by the hypothalamus. In particular, we consider the recently dis

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Preedy, V. R., D. M. Smith, N. F. Kearney, and P. H. Sugden. "Regional variation and differential sensitivity of rat heart protein synthesis in vivo and in vitro." Biochemical Journal 225, no. 2 (1985): 487–92. http://dx.doi.org/10.1042/bj2250487.

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In vivo, fractional rates of protein synthesis in atrial muscle of hearts taken from fed rats were 70% greater than in ventricular muscle. After 3 days starvation, atrial protein synthesis is inhibited, but the inhibition is less than in ventricles. A crude subcellular fractionation of the aqueous homogenates by centrifugation at 32000g showed that the supernatant and precipitate proteins were synthesized at the same rate in the ventricles. The fractional rates of protein synthesis and RNA/protein ratios in the right ventricle were 10% greater than in the left ventricle. Protein synthesis in b

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Veteskova, J., M. Obsivan, Z. Kmecova, et al. "SDF-1 and its receptor in the ventricles of rat with monocrotaline-induced pulmonary hypertension." European Pharmaceutical Journal 65, no. 2 (2018): 23–26. http://dx.doi.org/10.2478/afpuc-2018-0004.

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Abstract Aim: Chemokine stromal cell derived factor-1 (SDF-1) plays an important role in many processes such as apoptosis, proliferation, migration and angiogenesis, and these effects are mediated mostly by the receptor CXCR4. The aim of this study was to determine the expression of SDF-1 and CXCR4 in the ventricles of rats with monocrotaline-induced pulmonary hypertension. Methods: 10–12 weeks old male Wistar rats were injected with monocrotaline (s. c., 60mg/kg; MON) or vehicle (CON). Rats were sacrificed 1 week (1W-MON, 1W-CON), 2 weeks (2W-MON, 2W-CON) and 4 weeks after monocrotaline admin

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Yadav, Rajesh Prasad, and Shree Narayan Yadav. "Measurement of Brain Ventricles Using Multidetector Computed Tomography: A Prospective Study at TU Teaching Hospital, Maharajgunj, Nepal." Nepal Medical Journal 8, no. 1 (2025): 128–34. https://doi.org/10.37080/nmj.239.

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Introduction: Cerebral ventricular morphometry via multidetector computed tomography (MDCT) is pivotal for evaluating neurological pathologies such as hydrocephalus and neurodegenerative disorders. Age- and gender-specific normative data are essential to differentiate pathological enlargement from physiological aging, yet population-specific benchmarks, particularly in South Asian cohorts, remain scarce. This study aimed to measure the size of the brain ventricles using multidetector computed tomography (MDCT) and to evaluate the relationship of ventricular dimensions with age and gender. Meth

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Fannon, Dominic, Lakshika Tennakoon, Alex Sumich, et al. "Third ventricle enlargement and developmental delay in first-episode psychosis: preliminary findings." British Journal of Psychiatry 177, no. 4 (2000): 354–59. http://dx.doi.org/10.1192/bjp.177.4.354.

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BackgroundThird rather than lateral ventriculomegaly may be a more specific finding in psychosis. The relevance of ventricular abnormality remains unclear.AimsTo investigate the developmental correlates of ventricular enlargement.MethodInformation on childhood development and magnetic resonance images in 1.5-mm contiguous sections were collected on 21 patients experiencing a first episode of psychosis.ResultsPatients (n=21) had significantly less whole brain volume and enlarged third and lateral ventricles compared to controls (n=25). Third ventricle (r=0.48, P < 0.03) and lateral ventricle

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Priyanka, Raj, Pallavi, and Kumar Singh Ashok. "Adult Human Cadaveric Heart Assessment for Anatomical Variations of Papillary Muscles in Both the Ventricles." International Journal of Toxicological and Pharmacological Research 12, no. 6 (2022): 143–48. https://doi.org/10.5281/zenodo.11665447.

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<strong>Aim: </strong>To analyze the papillary muscles of heart with respect to the variations in their number, length, shape, position and pattern in both ventricles. <strong>Material & Methods: </strong>The study was conducted using 20 well preserved adult cadaveric human hearts obtained from the department of Anatomy, Vardhman institute of medical sciences, Pawapuri, Nalanda, Bihar, India for four months .The values of the length of papillary muscles and thickness of both ventricles of cadaveric heart specimens were presented as Mean± SD and p value was calculated

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Jesin, Elsa Jose, Madhavan C. Manju, and Kumari K. Girija. "Morphometric Study of the Lateral Ventricles of Brain by Imaging Using Computerized Tomography." International Journal of Pharmaceutical and Clinical Research 15, no. 7 (2023): 857–62. https://doi.org/10.5281/zenodo.11661256.

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<strong>Introduction: </strong>The human brain has four connected ventricles which form the ventricular system of brain – two lateral ventricles, a third ventricle and a fourth ventricle. Knowing the normal measurements of the cerebral ventricles in the living human has great significance in diagnosing and monitoring several pathologies. The aim of the present study is to determine the average dimensions and variations of the different parts of the normal lateral ventricles of brain by imaging using Computerized tomography. <strong>Materials and Methods: </strong>The study

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Sinha, Manisha B., Suchitra Kishore Somkuwar, Dharmendra Kumar, and D. K. Sharma. "Anatomical variations of papillary muscles in human cadaveric hearts of Chhattisgarh, India." Indian Journal of Clinical Anatomy and Physiology 7, no. 4 (2021): 374–80. http://dx.doi.org/10.18231/j.ijcap.2020.078.

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In both ventricles of the heart papillary muscles play important role for proper cardiac valvular function of heart. The present study was done to analyse the papillary muscles of heart with respect to the variations in their number, length, shape, position and pattern in both ventricles. Forty well preserved cadaveric human hearts were used for the study. The variations in the papillary muscles of both right and left ventricles were categorized, documented and photographed. In the right ventricle, authors observed 31.42% anterior, 34.3% posterior and 34.3% septal papillary muscles, and in the

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Browne, Vaughn A., Virginia M. Stiffel, William J. Pearce, Lawrence D. Longo та Raymond D. Gilbert. "Cardiac β-adrenergic receptor function in fetal sheep exposed to long-term high-altitude hypoxemia". American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 273, № 6 (1997): R2022—R2031. http://dx.doi.org/10.1152/ajpregu.1997.273.6.r2022.

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In this study, we hypothesized that a reduction in β-adrenergic receptor number or a decrease in functional coupling of the receptor to the adenylate cyclase system may be responsible for the blunted inotropic response to isoproterenol observed in fetal sheep exposed to high altitude (3,820 m) from 30 to 138–142 days gestation. We measured the contractile response to increasing doses of isoproterenol and forskolin in papillary muscles from both ventricles, estimated β-adrenergic receptor density (Bmax) and ligand affinity ( K d) using [125I]iodocyanopindolol, and measured adenosine 3′,5′-cycli

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Reinitz, László Z., Gábor Bajzik, Rita Garamvölgyi, et al. "Linear relationship found by magnetic resonance imaging between cerebrospinal fluid volume and body weight in dogs." Acta Veterinaria Hungarica 65, no. 1 (2017): 1–12. http://dx.doi.org/10.1556/004.2017.001.

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Despite numerous studies on cerebrospinal fluid (CSF) and its importance during hydrocephalus or myelography, no reliable values exist about its overall volume in dogs. In this study, our aim was to measure the intracranial (IC) volume of CSF in dogs and assess its possible relationship with body size and the symmetry of the lateral ventricles. We ran a 3D magnetic resonance imaging (MRI) sequence on the central nervous system of 12 healthy, male mongrel dogs between 3–5 years of age and 7.5–35.0 kg body weight. A validated semiautomatic segmentation protocol was implemented to segment the CSF

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Babicsak, Viviam R., Adriana V. Klein, Miriam H. Tsunemi, and Luiz C. Vulcano. "Age-related changes of the cerebral ventricles of healthy domestic cats." Pesquisa Veterinária Brasileira 38, no. 10 (2018): 1935–41. http://dx.doi.org/10.1590/1678-5150-pvb-5208.

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ABSTRACT: This study aimed to determine age-related changes of the cerebral ventricles of healthy non-brachycephalic domestic cats by the acquisition of brain MRI images of 12 adult (1 to 6 years), 11 mature (7 to11 years) and 10 geriatric (12 years or more) cats. Our hypothesis is that the cerebral ventricular system of cats expands with increasing age. The possibility of the evidence of the olfactory bulb cavities and temporal horns of the lateral ventricles were evaluated in this study. Volumes of the olfactory bulb cavities, lateral ventricles (including the temporal horns), third ventricl

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Rose, Jochen, Antonis A. Armoundas, Yanli Tian, et al. "Molecular correlates of altered expression of potassium currents in failing rabbit myocardium." American Journal of Physiology-Heart and Circulatory Physiology 288, no. 5 (2005): H2077—H2087. http://dx.doi.org/10.1152/ajpheart.00526.2003.

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Action potential (AP) prolongation is a hallmark of failing myocardium. Functional downregulation of K currents is a prominent feature of cells isolated from failing ventricles. The detailed changes in K current expression differ depending on the species, the region of the heart, and the mechanism of induction of heart failure. We used complementary approaches to study K current downregulation in pacing tachycardia-induced heart failure in the rabbit. The AP duration (APD) at 90% repolarization was significantly longer in cells isolated from failing hearts compared with controls (539 ± 162 fai

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Fujimoto, K., H. Yasue, K. Nakao, et al. "Novel monoclonal antibodies specific for human cardiac myosin light-chain 1: useful tools for analysis of normal and pathological hearts." Journal of Histochemistry & Cytochemistry 41, no. 1 (1993): 35–42. http://dx.doi.org/10.1177/41.1.8417110.

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To investigate the developmental, physiological and pathophysiological roles of human cardiac myosin light-chain 1 (LC1s), we developed two novel monoclonal antibodies (KA1 and KB1) against human cardiac LC1s and examined LC1s in normal and pathological hearts immunohistochemically. KA1 and KB1 were specific only for atrial LC1 (ALC1) and for both ALC1 and ventricular LC1 (VLC1), respectively, in human hearts. Among human tissues tested, including skeletal muscle, vascular smooth muscle, and liver, KA1 did not crossreact with proteins in any other tissues than atria, whereas KB1 crossreacted w

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Vassileva, Zornitsa, and Anna Kaneva. "Echocardiographic preoperative evaluation of unbalanced atrioventricular septal defect." Bulgarian Cardiology 26, no. 2 (2020): 46–58. http://dx.doi.org/10.3897/bgcardio.26.e52123.

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Unbalanced atrioventricular septal defect is seen by 10-15% of the patients with this congenital heart disease and poses serious challenges for the treating physicians regarding the choice of the most suitable operative intervention. The forms with moderate degree of unbalance between the two ventricles, especially when the size of the left ventricle is considered borderline, make the choice between two-ventricle correction and single-ventricle palliation quite difficult. The most important factor when judging the degree of unbalance is not the size of the ventricles but rather the redistribut

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Vassileva, Zornitsa, and Anna Kaneva. "Echocardiographic preoperative evaluation of unbalanced atrioventricular septal defect." Bulgarian Cardiology 26, no. (2) (2020): 46–58. https://doi.org/10.3897/bgcardio.26.e52123.

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Unbalanced atrioventricular septal defect is seen by 10-15% of the patients with this congenital heart disease and poses serious challenges for the treating physicians regarding the choice of the most suitable operative intervention. The forms with moderate degree of unbalance between the two ventricles, especially when the size of the left ventricle is considered borderline, make the choice between two-ventricle correction and single-ventricle palliation quite difficult. The most important factor when judging the degree of unbalance is not the size of the ventricles but rather the redistribut

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Preetam, Pratyush Dash, Sagar Prusti Jami, Kumar Naik Manoj, and Choudhury Sulata. "A Study of Morphology and Histomorphometry of Adult Human Papillary Muscles- A Prospective Study." International Journal of Pharmaceutical and Clinical Research 14, no. 6 (2022): 694–704. https://doi.org/10.5281/zenodo.13626519.

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<strong>Background:</strong> Historical documentation of the existence of papillary muscles as a component of cardiac anatomy exists at least as early as 16<sup>th</sup> century. They are pillar-like muscles seen within the ventricles attached to their walls. They have an integral role in proper cardiac valvular function. They are attached to mitral and tricuspid valve via chordae tendineae. The present study was done to analyse the papillary muscles of heart with respect to the variations in their number, length, shape, position and pattern in both ventricles. <strong>Aims and

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Naftel, Robert P., Chevis N. Shannon, Gavin T. Reed, et al. "Small-ventricle neuroendoscopy for pediatric brain tumor management." Journal of Neurosurgery: Pediatrics 7, no. 1 (2011): 104–10. http://dx.doi.org/10.3171/2010.10.peds10338.

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Object The use of intraventricular endoscopy to achieve diagnosis or to resect accessible intraventricular or paraventricular tumors has been described in the literature in both adults and children. Traditionally, these techniques have not been used in patients with small ventricles due to the perceived risk of greater morbidity. The authors review their experience with the effectiveness and safety of endoscopic brain tumor management in children with small ventricles. Methods Between July 2002 and December 2009, 24 children with endoscopically managed brain tumors were identified. Radiologica

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Eller, Theodore W., and Joseph F. Pasternak. "Isolated ventricles following intraventricular hemorrhage." Journal of Neurosurgery 62, no. 3 (1985): 357–62. http://dx.doi.org/10.3171/jns.1985.62.3.0357.

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✓ Panventricular enlargement often follows intraventricular hemorrhage in the premature neonate. During a recent 12-month period, the authors identified five infants who required shunting because of symptomatic post-hemorrhagic hydrocephalus, which was progressive despite serial lumbar punctures and the use of indwelling subcutaneous ventricular reservoirs. In the first 6 months following placement of the initial shunt, four of the infants required an additional shunt for isolated ventricles. Two children had isolation of the lateral ventricles and required bilateral shunts. Two other children

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Park, Jong-Hyuk, Yong-Sook Park, Jong-Sik Suk, et al. "Cerebrospinal fluid pathways from cisterns to ventricles in N-butyl cyanoacrylate–induced hydrocephalic rats." Journal of Neurosurgery: Pediatrics 8, no. 6 (2011): 640–46. http://dx.doi.org/10.3171/2011.8.peds1190.

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Object Cerebrospinal fluid typically enters the subarachnoid space from the ventricles via the fourth ventricular foramina. However, there is clinical evidence that CSF also flows in the opposite direction. Ventricular reflux of CSF from a cistern is a well-known phenomenon in radioisotope studies in patients with normal-pressure hydrocephalus. Additionally, the presence of ventricular blood in acute subarachnoid hemorrhage is frequently observed. The goal of this investigation was to examine the potential CSF pathways from cisterns to ventricles. The authors examined pathways in rat models in

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Johnson, Tannis A., Alrich L. Gray, Jean-Marie Lauenstein, Stephen S. Newton, and V. John Massari. "Parasympathetic control of the heart. I. An interventriculo-septal ganglion is the major source of the vagal intracardiac innervation of the ventricles." Journal of Applied Physiology 96, no. 6 (2004): 2265–72. http://dx.doi.org/10.1152/japplphysiol.00620.2003.

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The locations, projections, and functions of the intracardiac ganglia are incompletely understood. Immunocytochemical labeling with the general neuronal marker protein gene product 9.5 (PGP 9.5) was used to determine the distribution of intracardiac neurons throughout the cat atria and ventricles. Fluorescence microscopy was used to determine the number of neurons within these ganglia. There are eight regions of the cat heart that contain intracardiac ganglia. The numbers of neurons found within these intracardiac ganglia vary dramatically. The total number of neurons found in the heart (6,274

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Brück, Wolfgang, Ulrich Sander, Peter Blanckenberg, and Reinhard L. Friede. "Symptomatic xanthogranuloma of choroid plexus with unilateral hydrocephalus." Journal of Neurosurgery 75, no. 2 (1991): 324–27. http://dx.doi.org/10.3171/jns.1991.75.2.0324.

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✓ Xanthogranulomas involving the choroid plexus of the lateral ventricles are generally asymptomatic lesions. The case is reported of a 50-year-old man in whom a xanthogranuloma of the choroid plexus had occluded the left trigone, causing unilateral hydrocephalus of the left temporal horn and neurological symptoms. A review of the literature shows that xanthogranulomas of the glomus of the lateral ventricles differ from the xanthomatous cystic lesions of the third ventricle, which are probably akin to colloid cysts.

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Ding, Weihao, Sandeep Bhushan, Chen Ma, Yifan Yan, and Zongwei Xiao. "Right Ventricle Involvement in Hypertrophic Cardiomyopathy and Role of Cardiac Magnetic Resonance in Hypertrophic Cardiomyopathy: Review Article." Heart Surgery Forum 24, no. 4 (2021): E746—E750. http://dx.doi.org/10.1532/hsf.3977.

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Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiac disease, and its main characteristic is symmetrical or asymmetrical hypertrophy of the left ventricle and/or right ventricle. Most previous studies mainly include the left ventricle for definition of HCM, thus neglecting the right ventricle. But recently, many studies have reported the right ventricular involvement in HCM. Histopathological results showed that similar pathogenic changes in both the right and left ventricles, which suggests common myopathic processes and sarcomere genetic mutations. Cardiovascular magnetic res

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Blagonravov, M. L., M. V. Onufriev, E. A. Demurov, N. V. Guliaeva, and V. A. Frolov. "Assessment of caspase-3 activity in rabbit myocardial tissue during experimental hemodynamic overload of the left ventricle of the heart." Biomeditsinskaya Khimiya 56, no. 6 (2010): 719–25. http://dx.doi.org/10.18097/pbmc20105606719.

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It's well known that chronic overload of the cardiac left ventricle is accompanied by an increase in the cardiomyocyte apoptosis rate. However direction and extent of programmed cell death changes under an acute overload of the left ventricle still requires detailed investigation. Caspase-3 activity has been investigated in myocardium of rabbits on the 1, 3 and 5 days after modeling of left ventricle hemodynamic overload caused by surgical narrrowing of the ascending aorta. Control group included intact animals. It was found that caspase-3 activity significantly increased in both ventricles on

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Bakici, C., RO Akgun, D. Ozen, O. Alagin, and C. Oto. "The volume fraction values of the brain compartments using the Cavalieri principle and a 3T MRI in brachycephalic and mesocephalic dogs." Veterinární Medicína 64, No. 11 (2019): 482–89. http://dx.doi.org/10.17221/33/2019-vetmed.

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This study was aimed at: 1) estimating the volume and the volume fraction values of brain ventricles, grey matter and white matter with the Cavalieri principle and 2) creating three-dimensional reconstruction models of the brain ventricles by using magnetic resonance imaging. The brain structures of dogs were scanned with a 3T magnetic resonance system. The volumes of the total brain, the grey matter, the white matter, the lateral ventricle, the third ventricle, the cerebral aqueduct and the fourth ventricle of both sides were estimated separately by using a combination of the Cavalieri princi

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Radik, M., G. Doka, E. Malikova, P. Krenek, and J. Klimas. "Voluntary exercise and testosterone therapy caused increase in percentage of Myh6 and expression of oxidative stress marker Cybb in left ventricles of rats." European Pharmaceutical Journal 63, no. 1 (2016): 12–15. http://dx.doi.org/10.1515/afpuc-2016-0007.

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Abstract Aim: The aim of this study is to identify a possible damage to heart ventricles caused by supraphysiological doses of testosterone, voluntary physical activity or their combination. Methods: In the 8-week long experiment, 10-12 weeks old male Wistar rats were administered testosterone depot in dose of 100 mg/kg (TES, n = 15) or vehiculum (CON, n = 12) once a week subcutaneously. Next groups injected with testosterone (SPOTES, n = 12) or vehiculum (SPO, n = 12) were running in exercise wheels ad libitum. Gene expressions in left and right ventricles of the heart were measured by quanti

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Wehrwein, Erica A., Lindsay M. Parker, Anna A. Wright, et al. "Cardiac norepinephrine transporter protein expression is inversely correlated to chamber norepinephrine content." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 295, no. 3 (2008): R857—R863. http://dx.doi.org/10.1152/ajpregu.00190.2008.

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The cardiac neuronal norepinephrine (NE) transporter (NET) in sympathetic neurons is responsible for uptake of released NE from the neuroeffector junction. The purpose of this study was to assess the chamber distribution of cardiac NET protein measured using [3H]nisoxetine binding in rat heart membranes and to correlate NE content to NET amount. In whole mounts of atria, NET was colocalized in nerve fibers with tyrosine hydroxylase (TH) immunoreactivity. NE content expressed as micrograms NE per gram tissue was lowest in the ventricles; however, NET binding was significantly higher in the left

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Mampalam, Thomas. "Ventricles." JAMA 318, no. 2 (2017): 203. http://dx.doi.org/10.1001/jama.2017.1778.

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Anderson, Robert H., and Diane Spicer. "Fistulous communications with the coronary arteries in the setting of hypoplastic ventricles." Cardiology in the Young 20, S3 (2010): 86–91. http://dx.doi.org/10.1017/s1047951110001125.

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AbstractNeonates born with hypoplastic left heart syndrome now have a remarkably improved prognosis compared with the situation existing before the development of the Norwood sequence of operative procedures. Some of those born with hypoplastic right ventricles in the setting of pulmonary atresia with an intact ventricular septum, however, still have a relatively poor prognosis. In part this reflects the presence of fistulous communication between the cavity of the right hypoplastic right ventricle and the coronary arterial tree. Such fistulous communications are now increasingly recognised as

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