Sperm quality, and morphology and apoptosis of germinal epithelium cells of ram lambs receiving water of different salinities

2018 ◽  
Vol 58 (9) ◽  
pp. 1608
Author(s):  
T. L. B. G. Lins ◽  
V. G. Menezes ◽  
R. S. Barberino ◽  
S. A. P. Costa ◽  
N. M. S. S. Santos ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
The Other ◽  
Germinal Epithelium ◽  
Terminal Deoxynucleotidyl Transferase ◽  
Seminiferous Tubules ◽  
Sperm Abnormalities ◽  
Influence Of Water ◽  
Ram Lambs

The aim of the present study was to evaluate the influence of water salinity on semen quality, and on the morphology and apoptosis of germinal epithelial cells in prepubertal Morada Nova male lambs. Thirty-two lambs were allocated into four treatments with different amounts of sodium chloride (NaCl) added to the drinking water to simulate different water salinities; consequently, the concentrations of total dissolved solids (TDS) were as follows: 640 (control), 3188; 5740 and 8326 mg/L TDS. After 78 days, sperm was collected for analysis. The animals were slaughtered and histological and morphometric analyses and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling (TUNEL) assay were performed on the testis tissue. The thickness of the germinal epithelium and diameter of the seminiferous tubules were measured. A quadratic effect (P < 0.05) was observed in regard to semen volume and sperm abnormalities. There was an increase in the sperm count in the treatment containing 3188 mg/L TDS, compared with the control (640 mg/L TDS); however, this treatment did not differ (P > 0.05) from the other salinity treatments. Moreover, treatments with 3188 mg/L or 5740 mg/L TDS showed a higher (P < 0.05) spermatic vigour than did the other treatments. There was an increase (P < 0.05) in the number of TUNEL-positive cells in the treatment with the highest salinity (8326 mg/L TDS) compared with the control and other treatments. In conclusion, water used for drinking should contain between 3188 and 5740 mg/mL TDS so as to improve the concentration, vigour, motility and volume of semen, and to decrease sperm abnormalities in germinal cells of seminiferous tubule of Morada Nova ram lambs.

Restraint stress of male mice triggers apoptosis in spermatozoa and spermatogenic cells via activating the TNF-α system

Zygote ◽  
2020 ◽  
Vol 28 (2) ◽  
pp. 160-169 ◽  
Author(s):  
Jie Zhang ◽  
De-Ling Kong ◽  
Bin Xiao ◽  
Hong-Jie Yuan ◽  
Qiao-Qiao Kong ◽  
...  
Keyword(s):  
Psychological Stress ◽  
Restraint Stress ◽  
Semen Quality ◽  
Sperm Quality ◽  
Fertilization Rate ◽  
Seminiferous Tubules ◽  
Spermatogenic Cells ◽  
Male Mice ◽  
Testicular Cells ◽  
Tnf Α

SummaryStudies have indicated that psychological stress impairs human fertility and that various stressors can induce apoptosis of testicular cells. However, the mechanisms by which psychological stress on males reduces semen quality and stressors induce apoptosis in testicular cells are largely unclear. Using a psychological (restraint) stress mouse model, we tested whether male psychological stress triggers apoptosis of spermatozoa and spermatogenic cells through activating tumour necrosis factor (TNF)-α signalling. Wild-type or TNF-α−/− male mice were restrained for 48 h before examination for apoptosis and expression of TNF-α and TNF receptor 1 (TNFR1) in spermatozoa, epididymis, seminiferous tubules and spermatogenic cells. The results showed that male restraint significantly decreased fertilization rate and mitochondrial membrane potential, while increasing levels of malondialdehyde, active caspase-3, TNF-α and TNFR1 in spermatozoa. Male restraint also increased apoptosis and expression of TNF-α and TNFR1 in caudae epididymides, seminiferous tubules and spermatogenic cells. Sperm quality was also significantly impaired when spermatozoa were recovered 35 days after male restraint. The restraint-induced damage to spermatozoa, epididymis and seminiferous tubules was significantly ameliorated in TNF-α−/− mice. Furthermore, incubation with soluble TNF-α significantly reduced sperm motility and fertilizing potential. Taken together, the results demonstrated that male psychological stress induces apoptosis in spermatozoa and spermatogenic cells through activating the TNF-α system and that the stress-induced apoptosis in spermatogenic cells can be translated into impaired quality in future spermatozoa.

scholarly journals Semen quality and diversity of morphological sperm abnormalities in bulls: breed and strain effects

2019 ◽  
Vol 22 (8) ◽  
pp. 931-938
Author(s):  
M. A. Kleshchev ◽  
V. L. Petukhov ◽  
L. V. Osadchuk
Keyword(s):  
Sperm Motility ◽  
Environmental Conditions ◽  
Western Siberia ◽  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Sperm Head ◽  
Sperm Dna Fragmentation ◽  
Sperm Production ◽  
Sperm Abnormalities

At present great attention is paid to studying genetic regulation of farm animal adaptations to environmental conditions. This problem is very important due to a wide expansion of highly productive cattle breeds created in Europe and North America. However, until the present no investigation of changing semen quality in bulls of imported breeds during their adaptations to environmental conditions of Western Siberia has been conducted. The aim of this study was to investigate semen quality peculiarities and the diversity of morphological sperm abnormalities in bulls of imported and local breeds kept in the environmental conditions of the southern part of Western Siberia. We determined sperm concentration, sperm count, and rate of sperm with progressive motility and percentage of morphologically normal spermatozoa. The rate of sperm abnormalities according to Blome’s classifcation was determined too. It was found that the mean values of sperm concentration, sperm motility and percentage of morphologically normal spermatozoa in the bulls investigated were similar to those in bulls kept in European countries. Inter­breed differences in these parameters were not found. However, bulls of the Red Danish, Angler, and Simmental breeds had a higher percentage of misshapen sperm head and pyriform sperm head than bulls of the Black­White breed. An inter­strain difference in sperm motility in bulls of the Black­White breed was observed. It was found that bulls of Reflection Sovereign 198998 strain had lover sperm motility than bulls of Wis Burke Ideal 1013415 strain. No inter­strain differences in sperm production, percentage of morphologically normal spermatozoa and rate of main sperm abnormalities were found. Thus, it has been found that the environmental conditions of the southern part of Western Siberia do not seriously affect the sperm production, sperm motility or percentage of morphologically normal spermatozoa in bulls. However, the increased rate of misshapen and pyriform sperm heads in the bulls of the foreign breeds points to a need to study sperm DNA fragmentation.

scholarly journals The Association Between Race, Obesity, and Sperm Quality Among Men Attending a University Physician Practice in Washington, DC

2020 ◽  
Vol 14 (3) ◽  
pp. 155798832092598
Author(s):  
Nathan L. McCray ◽  
Heather A. Young ◽  
Michael S. Irwig ◽  
David Frankfurter ◽  
Arnold M. Schwartz ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
World Health ◽  
Washington Dc ◽  
Physician Practice ◽  
Research Attention ◽  
Men Of Color ◽  
Hispanic Men

A decades-long decline in sperm counts in Western countries has coincided with an increase in obesity rates, prompting study into their association. Few of these studies have incorporated men of color, the sperm health of whom is relatively unknown. The present exploratory study evaluated the association between body mass index (BMI), race, ethnicity, and sperm parameters among a diverse sample of U.S. men attending a Washington, DC physician practice. Semen samples were collected and processed at a single laboratory and sperm concentration, motility, morphology, and count were evaluated according to World Health Organization (WHO) 5th edition criteria. Multivariate models accounted for covariates related to sperm health. The study population ( n = 128) was largely obese (45.3%) or overweight (34.4%), and 36.0% were black or Hispanic. Black men had lower adjusted sperm concentration compared to white men (75.0 million/mL to 107.4 million/mL, p = .01) and were more likely to have oligozoospermia ( p = .01), asthenozoospermia ( p = .004), and low sperm count ( p < .0001). Hispanic men had higher adjusted sperm concentration compared to non-Hispanic men (124.5 million/mL to 62.1 million/mL, p = .007) and were less likely to have teratozoospermia ( p = .001). Obesity and BMI were associated with lower sperm motility and count in crude models only. Given the study’s sample size its findings should be interpreted with caution but align with the limited epidemiological literature to date that has evaluated racial and ethnic differences in semen quality. Heightened clinical research attention is needed to ensure men of color are included in representative numbers in studies of urologic and andrologic health.

The management of fertility in spinal cord injury

2017 ◽  
Author(s):  
Mikkel Fode ◽  
Jens Sønksen
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
Autonomic Nerve ◽  
Sperm Retrieval ◽  
Cord Injury ◽  
The Right ◽  
Spinal Cord Injured

While spinal cord injury (SCI) does not affect female fertility, the condition most often results in infertility in males due to anejaculation and reduced semen quality. Anejaculation is caused by disruption of the autonomic nerve fibres, which are normally responsible for the ejaculation. The reason for the poor sperm quality has not been firmly established. If spinal cord injured men cannot ejaculate by sexual intercourse or masturbation, ejaculation can be induced by either penile vibratory stimulation or electroejaculation. Only if these methods fail should surgical sperm retrieval be considered. The method of insemination depends largely on the total motile sperm count and patient preference. With the right treatment, it is possible for most SCI men to have children.

scholarly journals Shengjing Capsule Improves Spermatogenesis through Upregulating Integrin α6/β1 in the NOA Rats

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Jiamin Wang ◽  
Shankun Zhao ◽  
Lianmin Luo ◽  
Yangzhou Liu ◽  
Ermao Li ◽  
...  
Keyword(s):  
Stem Cells ◽  
Sperm Quality ◽  
Sperm Count ◽  
Spermatogonial Stem Cells ◽  
Normal Group ◽  
Seminiferous Tubules ◽  
High Dose ◽  
Sprague Dawley ◽  
Underlying Mechanisms ◽  
Almost All

Objective. To evaluate the therapeutic effect of Shengjing capsules on nonobstructive azoospermia (NOA) in the rat model. Methods. Twenty-five male Sprague–Dawley rats were randomly divided into five groups as follows (n=5 per group): normal group, NOA group, and three Shengjing capsule treatment groups (low-dose, medium-dose, and high-dose groups, respectively). HE staining and semen smear were performed to assess sperm quality. The expression levels of PI3K/AKT and integrin α6/β1 were measured by qRT-PCR and western blot analyses. Results. In the NOA group, almost all of the seminiferous tubules were vacuolated with a thin layer of basal compartment containing some spermatogonial stem cells. The counts of sperms in the NOA group were strongly lower than those of the normal group (P=0.0001). The expression of PI3K/AKT and integrin α6/β1 was scarcely expressed in the NOA group. All indexes mentioned above were significantly different from those of the medium- and high-dose groups (P=0.001, all). The sperm count of rats treated with Shengjing capsules was significantly higher than that of the NOA group (P=0.0001). The rats of Shengjing capsule groups had more layers of spermatogonial stem cells and spermatocytes, and some had intracavitary sperms. Conclusions. Shengjing capsules may be a promising therapeutic medicine for NOA. The underlying mechanisms might involve activating SSCs by upregulating the integrin α6/β1 expression via the PI3K/AKT pathway.

scholarly journals The Effect of Eurycoma longifolia on Sperm Quality of Male Rats

2009 ◽  
Vol 4 (10) ◽  
pp. 1934578X0900401 ◽  
Author(s):  
Kit-Lam Chan ◽  
Bin-Seng Low ◽  
Chin-Hoe Teh ◽  
Prashanta K. Das
Keyword(s):  
Testosterone Level ◽  
Sperm Quality ◽  
Sperm Count ◽  
Male Rats ◽  
Plasma Testosterone ◽  
Seminiferous Tubules ◽  
Albino Rats ◽  
Meoh Extract ◽  
Plasma Testosterone Level ◽  
Etoac Fraction

The present study investigated the effects of a standardized methanol extract of E. longifolia Jack containing the major quassinoid constituents of 13α(21)-epoxyeurycomanone (1), eurycomanone (2), 13α,21-dihydroeurycomanone (3) and eurycomanol (4) on the epididymal spermatozoa profile of normal and Andrographis paniculata induced infertile rats. The standardized MeOH extract at doses of 50, 100 and 200 mg/kg, the EtOAc fraction (70 mg/kg), and standardized MeOH extract at 200 mg/kg co-administered with the EtOAc fraction of A. paniculata at 70 mg/kg were each given orally to male Sprague-Dawley albino rats for 48 consecutive days. The spermatozoa count, morphology, motility, plasma testosterone level and Leydig cell count of the animals were statistically analyzed by ANOVA with a post-hoc Tukey HSD test. The results showed that the sperm count of rats given the standardized MeOH extract alone at doses of 50, 100 and 200 mg/kg were increased by 78.9, 94.3 and 99.2 %, respectively when compared with that of control (p < 0.01). The low count, poor motility and abnormal morphology of the spermatozoa induced by the A. paniculata fraction were significantly reversed by the standardized MeOH extract of E. longifolia (p < 0.001). The plasma testosterone level of the rats treated with the standardized MeOH extract at 200 mg/kg was significantly increased (p < 0.01) when compared with that of the control and infertile animals. The spermatocytes in the seminiferous tubules and the Leydig cells appeared normal. Testosterone level was significantly higher in the testes (p < 0.01) than in the plasma after 30 days of oral treatment with the standardized MeOH extract. Interestingly, eurycomanone (2) alone was detected in the rat testis homogenates by HPLC-UV and confirmed by LC/MS, and may have contributed towards the improvement of sperm quality. Thus, the plant may potentially be suitable for the management of male infertility.

Endocrine disrupting potential and reproductive dysfunction in male mice exposed to deltamethrin

2016 ◽  
Vol 36 (3) ◽  
pp. 218-226 ◽  
Author(s):  
A Ben Slima ◽  
Y Chtourou ◽  
M Barkallah ◽  
H Fetoui ◽  
T Boudawara ◽  
...  
Keyword(s):  
Pesticide Exposure ◽  
Semen Quality ◽  
Sperm Quality ◽  
Seminiferous Tubules ◽  
Control Group ◽  
Male Mice ◽  
Cell Cytoplasm ◽  
Pregnant Females ◽  
Sperm Density ◽  
Endocrine Disrupting

Pesticide exposure may affect semen quality and male fertility in humans. The aim of the present work was to elucidate the adverse effects of deltamethrin (Delta), a synthetic pyrethroid, on exposed male mice and their offspring. Adult male Albino/Swiss mice received deltamethrin (5 mg/kg) daily for 35 days and mated with untreated females to produce offspring. Classical measurements of ejaculate and sperm quality and testicular histopathological changes were assessed. Deltamethrin treatment affects sperm quality and quantity in the ejaculated semen of mice that had also markedly impaired libido as measured by indices of mating and fertility and number of pregnant females housed with male mice exposed to this pesticide. Exposure mice to deltamethrin significantly decreased their testosterone and inhibin B levels and affected reproductive performance. Testes of exposed mice showed marked histopathological alterations as compared to the control group. The mice exposed to 5 mg/kg body weight/day of deltamethrin showed severe alterations of the seminiferous tubules, sloughing of the germ cells, the vacuolization of germ cell cytoplasm, and the disruption of spermatogenic cells compared to the control group. Altered pregnancy outcomes were directly attributed to damage of sperm of male mice exposed to deltamethrin compared to the control group. We concluded that exposure to deltamethrin affected the reproductive system of male mice explored by altered total sperm density, motility, and morphology in mice spermatozoa.

scholarly journals Low semen quality and adverse histological changes in testes of adult male mice treated with bee venom (Apis mellifera)

2021 ◽  
Vol 11 (1) ◽  
pp. 70-79
Author(s):  
Sassia O. Regeai ◽  
Salma A. Abusrer ◽  
Naema S. Shibani
Keyword(s):  
Male Infertility ◽  
Adult Male ◽  
Semen Quality ◽  
Sperm Count ◽  
Bee Venom ◽  
Reproductive Status ◽  
Seminiferous Tubules ◽  
Control Group ◽  
Male Mice ◽  
Histological Changes

Background: Male infertility has been on the rise since the past seven decades. Recently, in Libya, bee venom therapy (BVT) has become a popular method among alternative healthcare practitioners for treating male infertility. However, a literature search did not find any published studies that investigated the use of BVT for infertility treatment. Aim: To investigate the effect of bee venom on the male reproductive status through measurements of semen quality parameters and testicular histological changes in adult male mice. Methods: A total of 48 male mice were randomly divided into three experimental groups (which were subdivided into two subgroups with eight mice each) as follows: control, bee venom sting (BVS), and bee venom injection (BVI). The normal control subgroup mice were not subjected to any treatment, while the vehicle control subgroup mice were injected (i.p.) with 200 μl of 0.9% saline solution. In the BVS-treated subgroups, each mouse was stung by one live bee for five times (BVS-5) or seven times (BVS-7) every third day for 2 or 3 weeks. While each mouse in the BVI-treated subgroups received 23 μg/kg in a dose volume of 200 μl BVIs (i.p.) for five times (BVI-5) or seven times (BVI-7) every third day for 15 or 21 days. Results: The findings of this study showed that repeated bee venom treatment by sting or injection to adult male mice resulted in a significant decline in testosterone levels, sperm count, sperm motility, and a very significant increase in the percentage of abnormal sperm morphology; also, there were harmful testicular histological changes in the structural organization of seminiferous tubules and degenerative changes in the germinal epithelium compared to control group. Conclusion: The results of this study provide evidence for the low semen quality and adverse testicular histological changes in male mice treated with bee venom. Hence, there is a desperate need for educating alternative healthcare practitioners and infertile couples about the harmful effects of BVT on reproductive status.

scholarly journals The Association Between Abstinence Period and Semen Parameters: Results in Normal Samples and Different Sperm Pathology

2021 ◽  
Author(s):  
Min Xie ◽  
Silvan Hämmerli ◽  
Kerstin Blickenstorfer ◽  
Brigitte Leeners
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Semen Parameters ◽  
Sexual Abstinence ◽  
Normal Morphology ◽  
Few Data ◽  
Total Motile Sperm Count ◽  
Abstinence Period

Abstract Purpose: The length of sexual abstinence seems to influence sperm quality. However, few data on the relevance of abstinence time in pathological sperm samples are available. With our study, we look for associations of abstinence length and semen quality. Methods: We studied semen samples from 4423 men undergoing fertility evaluation. Sperm concentration, percentage of progressively motile spermatozoa, total motile sperm count, percentage of spermatozoa with normal morphology, were compared after each day and 0-2, 3-7 and >7 days of abstinence. Results: We found that a longer abstinence time was related to higher sperm concentration in normal semen samples (P<0.001) and in semen samples with any sperm pathology (P<0.001, P=0.004) with the exception of oligozoospermia (P=0.125). Longer abstinence time was also associated with significantly reduced progressive motility in normal samples (P<0.001) and in cases of teratozoospermia (P<0.001). In normal samples a higher percentage of sperm were morphologically normal after a shorter abstinence period (P=0.03); in oligoasthenoteratozoospermia (OAT) samples, this was the case after a longer abstinence period (P=0.013). Conclusion: A longer abstinence time is associated with higher sperm concentration, whereas sperm motility is optimal after shorter abstinence times; results on morphology are controversial. The recommendation on abstinence time needs to be adjusted in relation to the parameter that needs to be improved.

scholarly journals MiR-125b-2 Knockout in Testis Are Associated with Targeting to PAP Gene, Mitochondrial Copy Number and Impaired Sperm Quality

2018 ◽  
Author(s):  
Longlong Li ◽  
Yanling Zhu ◽  
Jiajie Sun ◽  
Ting Chen ◽  
Junyi Luo ◽  
...  
Keyword(s):  
Male Infertility ◽  
Copy Number ◽  
Nuclear Dna ◽  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
Male Reproduction ◽  
Luciferase Assay ◽  
Cell Secretion ◽  
Mtdna Copy Number

microRNAs can cause male infertility by impacting sperm quality and impaired spermatogenesis. Since the miR-125 family plays an important role in regulating embryo development, but the function of miR-125b-2 in male reproduction remains unknown. In this study, we prepared a model of miR-125b knockout (KO) mice. Among the KO mice, the progeny test showed that litter sizes decreased significantly and the rate of non-parous females increased significantly (p&lt;0.05). At the same time, the testosterone concentration increased significantly (p&lt;0.01), with the remarkable decrease for estradiol (p&lt;0.05). Moreover, sperm count decreased obviously (p&lt;0.05) and the percentage of abnormal sperms increased significantly (p&lt;0.01). Testicular transcriptome sequencing demonstrated that there were 173 up-regulated genes, including Papolb (PAP), and 151 down-regulated genes in KO mice compared with wild type (WT). KEGG and GO analysis showed many of these genes were involved in sperm mitochondrial metabolism and other cellular biological processes. Meanwhile, the sperm mitochondria DNA (mtDNA) copy number was increased significantly (p&lt;0.01) in KO mice, but the integrity of mtDNA and nuclear DNA (nDNA) had no change. In the top 10 up-regulated genes, as a testis specific expressing gene, PAP can affect the process of spermatogenesis. Western blotting and Luciferase Assay validated that PAP was the target of miR-125b-5p. Intriguingly, we also found that both miR-125b and PAP were only highly expressed in germ cells (GC) instead of Leydig cells (LC) and Sertoli cells (SC), and miR-125b-5p could target PAP to regulate TM3 cell secretion of testosterone (p&lt;0.05). Our study firstly demonstrated that miR-125b-2 could regulate testosterone secretion by directly targeting PAP and increase sperm mtDNA copy number to affect semen quality. The study indicated that miR-125b-2 had a positive influence on the reproductive performance of animal and could be a potential therapeutic target for male infertility.

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