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Littérature scientifique sur le sujet « Rats - Spermatogenesis »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 6 septembre 2023

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Articles de revues sur le sujet "Rats - Spermatogenesis"

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Akdeniz, Ekrem, Mehmet Emin Onger, Mustafa Suat Bolat, et al. "Effect of atorvastatin on spermatogenesis in rats: A stereological study." Tropical Journal of Pharmaceutical Research 19, no. 12 (2021): 2609–14. http://dx.doi.org/10.4314/tjpr.v19i12.19.

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Purpose: To investigate the effects of oral atorvastatin on spermatogenesis in a rat model.Methods: Rats were equally assigned into control and study groups, the latter receiving atorvastatin (20 mg/kg/day). At the end of 12 weeks, spermatogenetic activity was evaluated using stereological and optical fractionator methods. Serum follicle-stimulating hormone (FSH), total testosterone (TT), and luteinizing hormone (LH) levels were measured using micro–ELISA kits. Total cholesterol, triglyceride (TG), low-density lipoprotein cholesterol (LDL - C), and high-density lipoprotein cholesterol levels w

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Sair, Mohammad, Asma Inam, Sabahat Gul, Raheela Adil, Muhammad Adnan Sadiq, and Muhammad Sajid Khan. "Effect of Zinc on Spermatogenesis." Pakistan Journal of Medical and Health Sciences 16, no. 1 (2022): 43–45. http://dx.doi.org/10.53350/pjmhs2216143.

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Aim: To determine the effect of zinc on spermatogenesis Methodology: the study was done at Shahida Islam Medical Complex, Lodhran. 60 albino rats were selected and divided into 4 groups each consisting of 15 albino rats each. The first control group-1 was feed with normal diet, while the group-2 and group-3 were treated with indomethacin and zinc respectively. Whereas the group-4 was treated with both zinc and indomethacin. This intervention was carried out for 12 weeks. Once the study was concluded, the rats were euthanized and histopathological analysis of the testes was carried out to deter

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Lorenzini, Fernando, Renato Tambara Filho, Regina Paula Xavier Gomes, Anderson Joel Martino-Andrade, Thomas Rolf Erdmann, and Jorge Eduardo Fouto Matias. "Long-term effects of the testicular torsion on the spermatogenesis of the contralateral testis and the preventive value of the twisted testis orchiepididymectomy." Acta Cirurgica Brasileira 27, no. 6 (2012): 388–95. http://dx.doi.org/10.1590/s0102-86502012000600006.

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PURPOSE: To determine whether the testicular torsion causes long-term effects on the spermatogenesis of the contralateral testis, and whether the orchiepididymectomy of the twisted testis could prevent them, using specific spermatogenesis parameters to elucidate the conflicting results in the literature. METHODS: Seventy-four pubertal male Wistar rats were randomly selected. The experimental group consisted of 40 rats, divided into four subgroups, submitted to 1.080 degrees counterclockwise left testicular torsion and its scrotal fixation at the beginning of the experiment, and left orchiepidi

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Imad Taher Abdulla, Sarbast Ahmad Mahmud, and Aveen Rustam Khdhr. "Histological effects of melatonin on testes in pinealectomized and normal albino rats." Tikrit Journal of Pure Science 22, no. 9 (2023): 34–39. http://dx.doi.org/10.25130/tjps.v22i9.872.

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In the present study, the histological effect of melatonin (MEL) on pinealectomized (PINx) and normal rats’ testes was investigated. Thirty six adult male rats were used in this study. The rats were divided into six experimental groups as follow: 1st control group; 2nd sham-operated surgery rats group; 3rd PINx rats group, 4th PINx rats+MEL (60 mg / Kg diet) group; 5th control rats+MEL (60 mg / Kg diet) group; and 6th control rats+MEL (120 mg / Kg diet) group and the treatments were continued for six weeks. The result showed mild histological changes in testicular tissue of sham-operated sur

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Jirsova, Zuzana, Tomas Kucera, Jindrich Martinek, Frantisek Liska, Drahomira Krenova, and Vladimir Kren. "ALTERED SPERMATOGENESIS IN THE HYPODACTYLOUS RATS." Biomedical Papers 148, no. 2 (2004): 213–15. http://dx.doi.org/10.5507/bp.2004.042.

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Gladkova, A. I., and I. V. Sidorova. "THE NEAREST AND REMOTE CONSEQUENCES OF ESTROGENIZATION FOR RATS SPERMATOGENESIS." Problems of Endocrine Pathology 32, no. 2 (2010): 74–79. http://dx.doi.org/10.21856/j-pep.2010.2.11.

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The estradiol application to male rats leads to suppression of the testis incretory and generative function, showing by decreases of testosterone concentration in blood, negative changes of quantitative and quality indexes of spermatogenesis. Spermatogones are more sensitive to negative action of estrogenization in comparison with cells of serotinal stages of spermatogenesis. Returning to norm of spermogram indexes in a new cycle of a spermatogenesis specifies in convertibility of estrogenization negative consequences

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Fice, Heather, and Bernard Robaire. "Telomere Dynamics Throughout Spermatogenesis." Genes 10, no. 7 (2019): 525. http://dx.doi.org/10.3390/genes10070525.

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Telomeres are repeat regions of DNA that cap either end of each chromosome, thereby providing stability and protection from the degradation of gene-rich regions. Each cell replication causes the loss of telomeric repeats due to incomplete DNA replication, though it is well-established that progressive telomere shortening is evaded in male germ cells by the maintenance of active telomerase. However, germ cell telomeres are still susceptible to disruption or insult by oxidative stress, toxicant exposure, and aging. Our aim was to examine the relative telomere length (rTL) in an outbred Sprague D

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Huang, H. F. S., G. R. Marshall, R. Rosenberg, and E. Nieschlag. "Restoration of spermatogenesis by high levels of testosterone in hypophysectomized rats after long-term regression." Acta Endocrinologica 116, no. 4 (1987): 433–44. http://dx.doi.org/10.1530/acta.0.1160433.

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Abstract. In order to correlate the levels of intratesticular testosterone and the status of spermatogenesis, the present study examined the spermatogenic responses of mature chronically hypophysectomized (HPX) rats to different regimens of testosterone (T) replacement, i.e. implantation of a 2 × 5 or 6 × 5 cm long testosterone capsule (TC), or injection of 25 mg or 100 mg of testosterone enanthate (TE) every 4 days for 90 days. These regimens restored the testicular testosterone of the HPX rats to 25–96% of that measured in normal control rats. The testis weight of untreated HPX rats was belo

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Liao, Weigong, Mingchun Cai, Jian Chen, et al. "Hypobaric hypoxia causes deleterious effects on spermatogenesis in rats." REPRODUCTION 139, no. 6 (2010): 1031–38. http://dx.doi.org/10.1530/rep-09-0557.

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The study was conducted to explore the effects of hypobaric hypoxia on spermatogenesis in rats. Adult male Wistar rats were randomly divided into four groups: three hypoxia-exposed groups and one normoxic control group. Rats in the normoxic control group were raised at an altitude of 300 m, while rats in the 5-, 15-, and 30-day hypoxic groups were raised in a hypobaric chamber simulating a high altitude of 5000 m for 5, 15, and 30 days respectively. Flow cytometry was used to detect the DNA content of testicular spermatogenic cells in rats. The apoptosis of germ cells in testis was analyzed by

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Cakici, Cihangir, Bugra Buyrukcu, Gokhan Duruksu, et al. "Recovery of Fertility in Azoospermia Rats after Injection of Adipose-Tissue-Derived Mesenchymal Stem Cells: The Sperm Generation." BioMed Research International 2013 (2013): 1–18. http://dx.doi.org/10.1155/2013/529589.

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The recent reports on the treatment of azoospermia patients, in which spermatozoa could not be traced in their testes, are focused more on the potential use of adult stem cells, like mesenchymal stem cells (MSCs). The aim of this study was to demonstrate the potential use of MSCs derived from adipose tissue in the treatment of azoospermia using rat disease models. After busulfan application, the rats (n=20) were injected with the GFP+MSCs into left rete testes. After 12 weeks, the testes with cell injection (right testes) were compared to control (left testes) after dimensional and immunohisto

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Thèses sur le sujet "Rats - Spermatogenesis"

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Tam, Yuen-tsung. "Spatiotemporal expression of VAD1.2/AEP2 in spermatogenesis." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39558071.

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Tam, Yuen-tsung, and 譚婉頌. "Spatiotemporal expression of VAD1.2/AEP2 in spermatogenesis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39558071.

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Gao, Jing, and 高晶. "Roles of VAD1.3 in spermatogenesis and fertilization." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B4852170X.

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　　Vad1.3 is an evolutionarily-conserved, testis-specific gene identified from a retinol-treated Vitamin A-deficiency (VAD) rat model. VAD1.3 is expressed throughout spermiogenesis at the acrosome of spermatids and epididymal spermatozoa, suggesting a role in acrosome biogenesis or acrosome reaction. The present study aimed to explore the functional role of VAD1.3 in spermatogenesis and sperm functions by the cellular and gene-knockout approaches. 　　Double immunofluorescent microscopy confirmed the co-localization of VAD1.3 and syntaxin 1 in mouse spermatids and spermatozoa. Deletion analysi

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Chung, Shui-wah. "Cell-cell interactions in the rat testis : biology and future perspectives /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2056692X.

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Gao, Jing, and 高晶. "Effect of acupuncture on the spermatogenesis of heat-treated rodent testis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41291001.

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Gao, Jing. "Effect of acupuncture on the spermatogenesis of heat-treated rodent testis." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41291001.

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鍾穗華 and Shui-wah Chung. "Cell-cell interactions in the rat testis: biology and future perspectives." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31238385.

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Wong, Chui-shan. "Interactions of multiple proteins during specialized junctions formation in the rat seminiferous epithelium /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20567431.

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Wong, Chui-shan, and 黃翠珊. "Interactions of multiple proteins during specialized junctions formation in the rat seminiferous epithelium." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31221907.

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Wong, Wai-pung Elissa, and 黃懷芃. "Regulation of spermatogenesis in the microenvironment of the rat seminiferous epithelium: the roles of cellpolarity proteins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B4357239X.

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Chapitres de livres sur le sujet "Rats - Spermatogenesis"

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Liu, Hong, Shumei Lin, Qiufeng Lv, et al. "Taurine Recovers Testicular Steroidogenesis and Spermatogenesis in Streptozotocin-Induced Diabetic Rats." In Advances in Experimental Medicine and Biology. Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1079-2_62.

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Ushiyama, I., M. Yamada, A. Tanegashima, et al. "ABH-Related Antigens Participate in the Spermatogenesis of Cats and Rats." In 16th Congress of the International Society for Forensic Haemogenetics (Internationale Gesellschaft für forensische Hämogenetik e.V.), Santiago de Compostela, 12–16 September 1995. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80029-0_133.

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El-Gendy, Gehan. "Combination of low dose of Pioglitazone and omega-3 in a low dose and the effect on spermatogenesis and steroidogenesis in diabetic rats." In Edited Book. United Research Forum, 2022. http://dx.doi.org/10.51219/urforum.2022.gehan-el-gendy.

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Akhtar, Muhammad Faheem, Wang Changfa, and Fangxiong Shi. "Variations in Seminiferous Tubules during Active States of Spermatogenesis in Yangzhou Goose Ganders: A Case Study in China." In Research Aspects in Biological Science Vol. 2. Book Publisher International (a part of SCIENCEDOMAIN International), 2022. http://dx.doi.org/10.9734/bpi/rabs/v2/2124b.

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Kundu, Chanakya Nath, Gopal C. Majumder, and Ranjan Preet. "Cryopreservation of Spermatozoa." In Biomedical Engineering and Information Systems. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-61692-004-3.ch015.

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Cryopreservation of sperm has many applications in agriculture, biotechnology, and clinical medicine. The spermatozoon is a very specialized cell that loses the ability of biosynthesis, repair, growth and cell division during the final phase of spermatogenesis. Cryopreservation of sperm generally requires a reduction or arrest of the metabolism of cells, thereby prolonging their life. Semen samples of mammalian species are diluted with a suitable diluent [containing a complex extender (e.g., egg-yolk, milk, milk-whey), cryoprotectant (e.g., glycerol)] and processed through different freezing protocol prior to storage in liquid nitrogen (-196°C). Despite the use of complex media and cryoprotectants, a substantial portion of the cells die during freezing and thawing (recovery rate do not exceeds more than 50%). As the complex media contain large numbers of undefined biomolecules (proteins, lipids, carbohydrates), it is difficult to analyze the beneficial/detrimental effects of a particular compound on sperm cryopreservation. In the present book chapter we have briefly discussed the knowledge and limitations of the current semen cryopreservation technology and mainly focused on the development of a simple cryopreservation model using chemically-defined medium and goat cauda-epididymal sperm. Using this model system, several novel cryoprotectants have been identified and biochemical basis of sperm membrane damage during cryopreservation has been investigated.

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Ståhl, Olof, Jakob Eberhard, and Aleksander Giwercman. "Testicular tumours." In Oxford Textbook of Endocrinology and Diabetes. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780199235292.003.9089.

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Testicular cancer and the problems of male hypogonadism and infertility are closely related to each other—from a clinical as well as a biological point of view. Thus, men previously treated for testicular cancer are more and more frequently seen among patients referred to infertility clinics. This is due to the fact that: ◆ the survival rate among young testicular cancer patients is very high, being close to 95%, and the quality of life—including gonadal function—plays an important role in the men who have been cured ◆ there is an increasing knowledge that testicular function—both spermatogenesis and androgen production—in men with germ cell cancer is severely impaired. Recent research indicates a common prenatal cause of these pathologies of reproductive system ◆ modern techniques of assisted reproduction, particularly intracytoplasmic sperm injection (ICSI), have made it possible to obtain fertilization even when using ejaculates of extremely poor quality. This option has improved the possibility of cancer treated men becoming fathers. However, a source of potential worry is possible sperm DNA damage related to cancer and its treatment ◆ testicular germ cell cancer is more common in men presenting with poor semen quality. Thus, when investigating a man for infertility he should be assessed as to whether he belongs to a high-risk group for which a proper screening procedure should be offered (see below) Apart from this clinical link between testicular cancer and male infertility, there are also some indications of common biological factors involved in aetiology and pathogenesis. In this chapter some basic biological aspects of testicular cancer will be described. In Chapter 9.5.1 the hypothesis linking a rise of gonadal malignancy and poor testicular function is explained in more detail.

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Actes de conférences sur le sujet "Rats - Spermatogenesis"

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Arabacı Tamer, Sevil. "Testicular torsion-induced tubular injury and disturbed spermatogenesis in rats were improved with an estrogen receptor-beta agonist." In 15th International Congress of Histochemistry and Cytochemistry. LookUs Scientific, 2017. http://dx.doi.org/10.5505/2017ichc.pp-185.

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