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Tesi sul tema "Spermatozoa Physiology"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 28 gennaio 2023

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1

Brooks, Nicole Lisa. "Apoptotic markers in ejaculated human spermatozoa." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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Abstract (sommario):

The role of male germ cell death in spermatogenesis is an important one as it removes dysfunctional or genetically damaged germ cells and is necessary to maintain an optimal germ cell to Sertoli cell ratio. The formation of the bloodtestis barrier requires the elimination of excessive germ cells and a surge of germ cell apoptosis occurs prior to puberty regulating the ratio of germ cells to Sertoli cells. The aim of this study was to evaluate the presence of four apoptotic markers on sperm from patients with various grades of fertility using flow cytometry. Furthermore, any correlations betwee

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2

Crosby, John. "Interactions between prostaglandins, phospholipids and spermatozoa." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/18806.

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3

Murray, George M. "Acrosome size and kinematics of human spermatozoa." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/1131.

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4

Downie, Sarah Elizabeth. "Detection of chromosomes and chromosomal abnormalities in human sperm." Title page, contents and overview only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phd751.pdf.

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Abstract (sommario):

Bibliography: leaves 135-151. A study of chromosomal abnormalities and the localisation of chromosomes in human sperm, especially from men with TSD, using fluorescence in situ hybridization (FISH). The project entailed: 1. development of reliable FISH protocols, 2. determination of basline frequencies of aneuploidy, 3. analysis of chromosomal abnormalities in men with severe TSD and 4. assessment of the localisation of individual chromosomes within the sperm head.

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5

Burley, Lisa Marie. "The Effects of Miticides on the Reproductive Physiology of Honey Bee (Apis mellifera L.) Queens and Drones." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/34584.

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Abstract (sommario):

The effects of miticides on the reproductive physiology of queens and drones were examined. The first study examined the effects of Apistan (fluvalinate), Check Mite+ (coumaphos), and Apilife VAR (74% thymol) on sperm production and viability in drones. Drones from colonies treated with each miticide were collected at sexual maturity. Sperm production was determined by counting the number of sperm in the seminal vesicles. Sperm for viability assays was analyzed by dual fluorescent staining. Apilife VAR and coumaphos significantly lowered (P<0.0001) sperm production and coumaphos treatments cau

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6

Van, Der Linde Michelle. "Gender selection: separation techniques for X- and Y-chromosome bearing human spermatozoa." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85629.

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Thesis (MScMedSc)-- Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Preconceptual sex selection is an ethically justifiable process whereby X- and Y-chromosome bearing spermatozoa are isolated prior to fertilization of the oocyte in order to generate either a male or a female offspring. Although various separation techniques are available, none can guarantee 100% accuracy. There are various physiological differences between X- and Y-chromosome bearing spermatozoa which can be used to separate these two populations of sperm. For the purpose of this study, X- and Y-chromosome bearing sperma

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7

Rolke, Kristin Rose. "Localization of the CatSper1 protein and induction of hyperactivated-like motility in equine spermatozoa." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3255.

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8

Aboua, Yapo Guillaume. "The impact of organic hydroperoxides and a red palm oil supplemented diet on spermatogenesis, sperm function and sperm apoptosis." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1523.

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Thesis (DTech (Biomedical Technology))--Cape Peninsula University of Technology, 2009<br>Many environmental, physiological, and genetic factors have been shown to impair sperm function through oxidative damage. Oxidative stress (OS) arises as a consequence of excessive reactive oxygen species (ROS) production and/or impaired antioxidant defence mechanisms. The decline in male reproductive health generated considerable public and scientific concerns about the possible role of environmental contaminants. A better understanding of how OS affects sperm function will be beneficial as it might help

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9

Hadjisavas, Michael. "Induction of mitogenesis and cell-cell adhesion by porcine seminal plasma." Title page, contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phh1293.pdf.

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Abstract (sommario):

Includes list of publications by the author. Includes bibliographical references (leaves 103-123) Evaluates the nature of the interactions occurring between semen and cells of the uterus that occur following mating in pigs. Describes a novel ability of porcine seminal plasma to induce dose dependent cell-cell adhesion and mitogenesis amongst peripheral blood lymphocytes in vitro.

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10

Gwayi, Noluzuko. "The effects of melatonin on the testis, epididymis and sperm physiology of the Wistar rat." Thesis, Rhodes University, 2001. http://hdl.handle.net/10962/d1005366.

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Abstract (sommario):

Melatonin is a product of the pineal gland and is postulated to play an antigonadotropic role in the reproductive system of mammals. The reproductive system of non-seasonally breeding mammals is believed to be not as responsive to melatonin treatment as that of seasonally breeding mammals. Recently, there has been increasing support from in vivo and in vitro studies, for the hypothesis that melatonin has negative effects on sperm physiology, especially on sperm motility. High and/or low seminal concentrations of melatonin have been associated with abnormalities in human sperm motility and conc

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11

Boj, Lidón Mónica María. "Aquaporin biology during spermatogenesis and sperm physiology in the marine teleost gilthead seabream (Sparus aurata)." Doctoral thesis, Universidad de Alicante, 2016. http://hdl.handle.net/10045/57628.

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12

Lampiao, Fanuel. "Measurement of free radicals and their effects on human spermatozoa." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/212.

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13

Tang, Chang-hung Lawrence, and 鄧燦洪. "The hamster zona-free ova penetration assay: study of human spermatozoal fertilizing capacity in male fertilityand infertility." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1987. http://hub.hku.hk/bib/B31981318.

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14

Lampiao, Fanuel. "Effects of insulin and leptin on human spermatozoa function and their cross-talk with nitric oxide and cytokines." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1083.

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Abstract (sommario):

Thesis (PhD (Biomedical Sciences. Medical Physiology))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: In recent years there has been an increase in obesity and diabetes mellitus (DM). These conditions have for a long time been associated with infertility. Obesity is characterized by high levels of circulating leptin and cytokines as well as insulin resistance. Type I DM is associated with low or no insulin whereas, Type II DM is characterised by insulin resistance. As the prevalence of obesity and DM continues to rise, it is likely that the incidence of infertility associated wit

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15

Green, Steven P. "An evaluation of the morphology, spontaneous acrosome reaction (AR) and fertilizing efficacy of human hyperactivated (HA) spermatozoa recovered individually, in vitro, using a new technique called Computer Image Sperm Selection (CISS)." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342066.

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16

Kumar, Deepti Lava. "Sodium ion transporters in sperm: Epigenetic regulation of the sperm-specific alpha4 Na,K-ATPase and role of the epithelial sodium channel alpha in sperm physiology." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1399287474.

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17

Tremellen, Kelton Paul. "The immunoregulatory role of seminal plasma in early murine and human pregnancy /." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09pht789.pdf.

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18

Gallego, Albiach Victor. "Sperm physiology and quality in two marine teleosts: Anguilla anguilla & Takifugu niphobles." Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/34625.

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Abstract (sommario):

The conservation status of the species studied in this thesis (European eel and pufferfish) is currently frail, thus the main goal of this research was to develop, improve and apply several techniques and protocols with the aim of increasing the knowledge about their sperm biology, improving their reproductive performance and even helping future breeding in captivity. The reproductive performance of the males is often assessed through the sperm motion parameters analysed by the CASA system, so first we focused on how to standardize this technique in terms of procedural and bi

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19

Blawut, Bryan Joseph. "Assisted Reproduction Techniques’ Effects on Sperm Physiology of the Freshwater Fish, Sauger (Sander canadensis)." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1607012858031537.

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20

Maartens, Pieter Johann. "Investigating the effects of nicotine on the male reproductive system." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85759.

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Abstract (sommario):

Thesis (MScMedSc)-- Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Much has been documented about the detrimental effects of adverse lifestyle factor exposure on the body. Exposure to factors, such as cigarette smoke, have proved to not only be a burden on global health and economy, but have also led to growing concerns about effects on systemic functions such as reproduction. The aim of the present study was to determine the effects of in utero and in vitro nicotine exposure on spermatozoal function and the antioxidant enzyme activity and lipid peroxidation (LPO) status of the male

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21

Shea, Jeremy M. "Paternal Effects on Metabolism in Mammals: A Dissertation." eScholarship@UMMS, 2015. https://escholarship.umassmed.edu/gsbs_diss/759.

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Abstract (sommario):

The following work demonstrates that paternal diet controls medically important metabolic phenotypes in offspring. We observe transmission of dietary information to the zygote via sperm, and this information evades reprogramming that typically occurs after fertilization. Cytosine methylation is implicated as a major contributor to meiotic epigenetic inheritance in several transgenerational phenomena. Our extensive characterization of the sperm methylome reveals that diet does not significantly affect methylation patterns. However, we find that extensive epivariability in the sperm epigenome ma

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22

Shea, Jeremy M. "Paternal Effects on Metabolism in Mammals: A Dissertation." eScholarship@UMMS, 2003. http://escholarship.umassmed.edu/gsbs_diss/759.

Testo completo

Abstract (sommario):

The following work demonstrates that paternal diet controls medically important metabolic phenotypes in offspring. We observe transmission of dietary information to the zygote via sperm, and this information evades reprogramming that typically occurs after fertilization. Cytosine methylation is implicated as a major contributor to meiotic epigenetic inheritance in several transgenerational phenomena. Our extensive characterization of the sperm methylome reveals that diet does not significantly affect methylation patterns. However, we find that extensive epivariability in the sperm epigenome ma

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23

Downie-Doyle, Sarah Elizabeth. "Detection of chromosomes and chromosomal abnormalities in human sperm / Sarah Elizabeth Downie." 1999. http://hdl.handle.net/2440/19769.

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Abstract (sommario):

Bibliography: leaves 135-151.<br>xx, 151, [14] leaves, [15] leaves of plates : ill. (chiefly col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>A study of chromosomal abnormalities and the localisation of chromosomes in human sperm, especially from men with TSD, using fluorescence in situ hybridization (FISH). The project entailed: 1. development of reliable FISH protocols, 2. determination of basline frequencies of aneuploidy, 3. analysis of chromosomal abnormalities in men with severe TSD and 4. assessment

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24

"The involvement of a novel anion exchanger, SLC26A3, in sperm function." Thesis, 2010. http://library.cuhk.edu.hk/record=b6074815.

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Abstract (sommario):

Further in vivo functional studies were also performed. The SLC26A3 antibody was injected into the BALB/C mice seminiferous tubules using micropipette. The animals were sacrificed after three days, and CASA, daily sperm production (DSP) were used to evaluate sperm motility and spermatogenesis. The results showed that sperm motility was increased while there was no significant difference between DSP. Our results indicate that SLC26A3 on sperm does not play a dominant role in spermatogenesis, epididymal maturation and sperm motility.<br>In the first part of study, guinea pig sperm which were inc

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25

Soon, Lilian L. L. "Chromatin organisation in the spermatozoa of the dasyurid marsupial, Sminthopsis crassicaudata / Lilian L.L. Soon." 1996. http://hdl.handle.net/2440/18812.

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Abstract (sommario):

Copies of author's previously published articles inserted.<br>Bibliography: leaves 118-142.<br>vi, 156, [26] leaves, [22] leaves of plates : ill. (some col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Anatomy and Histology and Dept. of Animal Genetics, 1997?

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26

Soon, Lilian L. L. "Chromatin organisation in the spermatozoa of the dasyurid marsupial, Sminthopsis crassicaudata / Lilian L.L. Soon." Thesis, 1996. http://hdl.handle.net/2440/18812.

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Abstract (sommario):

Copies of author's previously published articles inserted.<br>Bibliography: leaves 118-142.<br>vi, 156, [26] leaves, [22] leaves of plates : ill. (some col.) ; 30 cm.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Anatomy and Histology and Dept. of Animal Genetics, 1997?

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27

Naveen, Daniel M. "Molecular Analysis Of Hamster Sperm Capacitation: Significance Of Protein Tyrosine Phosphorylation." Thesis, 2006. http://hdl.handle.net/2005/332.

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Abstract (sommario):

Fertilization is a process that generates the first cell of a new organism. In mammals, fertilization occurs in the female reproductive tract. The male gametes (spermatozoa) are rendered fertilization-competent only after they undergo capacitation and acrosome reaction (AR). The set of physiological changes, characterised by the acquisition of hyperactivated motility, that render the spermatozoa fertilization competent is known as capacitation. Using in vitro models, the complex intracellular signaling events mediating this process are still being understood. This thesis explores the role of

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