scholarly journals THE EFFECT OF CHRONIC EXPOSURE OF NICOTINE INHALATION TO THE COUNT OF SPERMATOGONIA, SERTOLI CELLS AND LEYDIG CELLS OF YOUNG WHITE RAT WISTAR STRAIN

2019 ◽  
Vol 26 (2) ◽  
Author(s):  
Aril Rizaldi ◽  
Doddy M Soebadi ◽  
Soetojo Soetojo
Keyword(s):  
Cell Count ◽  
Sertoli Cell ◽  
Leydig Cell ◽  
Sertoli Cells ◽  
Chronic Exposure ◽  
Leydig Cells ◽  
Control Group ◽  
Nicotine Exposure ◽  
Control Group Design ◽  
Wistar Strain

Objective: To analyze the difference in the number of spermatogonia, leydig cells and sertoli cells in young age of  white mice Wistar strain after inhalation of chronic nicotine exposure. Material & Method: Laboratory experimental study with post test only control group design, measurement of spermatogonium, leydig cell, sertoli cell in 5 groups of young male Wistar strain, negative control group and treatment group given nicotine exposure 0.5 mg, 1 mg, 2 mg, and 4 mg/kg body weight/day for 30 days. Results: A significant reduction in spermatogonium was found in the group given nicotine 0.5 mg/kgBW/day (p=0.048), 1 mg/kgBW/day (p=0.002), 2 mg/kgBW/day (p=0.002) and 4 mg/kgBW/day (p=0.000) when compared to the control group. Significant decreases were also seen in the group receiving 4 mg of nicotine exposure compared with 0.5 mg (p=0.018). Significant decrease in sertoli cell count was seen only in the nicotine group of 4 mg/kgBW/day compared with the control group (p=0.047). A significant decrease in leydig cell count was found in the nicotine 2 mg/kgBW/day (p=0.037) and nicotine group 4 mg/kgBW/day (p=0.023) when compared with the control group. Significant decreases were also found in the 4 mg/kgBW/day group compared to the 0.5 mg/kgBW/day group (p=0.004). In this study there were also a decrease in the number of spermatogonia, sertoli cells, and leydig cells in the increased dose of nicotine given although not statistically significant. Conclusion: Chronic exposure of nicotine per inhalation may decrease the number of spermatogonia, sertoli cells, and leydig cells. The higher the dose of nicotine given the greater the decrease in the number of spermatogonium cells, sertoli cells, and leydig cells that occur. This proves that nicotine is one of the causes of infertility in men.

Adult rat Sertoli cells secrete a factor or factors which modulate Leydig cell function

1987 ◽  
Vol 114 (3) ◽  
pp. 459-467 ◽  
Author(s):  
V. Papadopoulos ◽  
P. Kamtchouing ◽  
M. A. Drosdowsky ◽  
M. T. Hochereau de Reviers ◽  
S. Carreau
Keyword(s):  
Cyclic Amp ◽  
Sertoli Cell ◽  
Leydig Cell ◽  
Sertoli Cells ◽  
Leydig Cells ◽  
Cell Function ◽  
Cell Interaction ◽  
Adult Rats ◽  
Adult Rat ◽  
Stimulating Factor

ABSTRACT Production of testosterone and oestradiol-17β by Leydig cells from adult rats was stimulated by LH or dibutyryl cyclic AMP (10 and 2·5-fold respectively). The addition of spent medium from normal, hemicastrated or γ-irradiated rat seminiferous tubule cultures, as well as from Sertoli cell cultures, to purified Leydig cells further enhanced both basal (44 and 53% for testosterone and oestradiol-17β respectively) and LH-stimulated (56 and 18%) steroid output. Simultaneously, a decrease (20–30%) in intracellular cyclic AMP levels was observed. This stimulating factor (or factors) secreted by the Sertoli cells is different from LHRH, is of proteinic nature and has a molecular weight ranging between 10 000 and 50 000; its synthesis is not controlled by FSH nor by testosterone. This factor(s) involved in rat Leydig cell steroidogenesis, at a step beyond the adenylate cyclase, does not require protein synthesis for testosterone formation whereas it does for oestradiol-17β production. It should be noted that a germ cell–Sertoli cell interaction modulates the synthesis of this factor(s). J. Endocr. (1987) 114, 459–467

scholarly journals EFFECT OF ERYTHROPOIETIN ADMINISTRATION ON THE AMOUNT OF SPERMATOGONIUM, SERTOLI CELL, AND LEYDIG CELL ON RATS TESTIS (WISTAR STRAIN) AFTER VAS DEFERENS LIGATION RELEASED

2019 ◽  
Vol 26 (1) ◽  
Author(s):  
Muhammad Surya Negara ◽  
Soetojo Soetojo ◽  
Doddy M Soebadi
Keyword(s):  
Cross Sections ◽  
Sertoli Cells ◽  
Leydig Cells ◽  
Vas Deferens ◽  
Seminiferous Tubules ◽  
Control Group ◽  
White Rats ◽  
Wistar Strain ◽  
Significant Difference ◽  
Release Group

Objective: To determine the effect of Erythropoietin (EPO) on the number of spermatogonia, Sertoli cells, and Leydig cells in white rats wistar strain testis after the release of ligation vas deferens. Material & Methods: Twenty-four Wistar strain rats were grouped into 4 groups. The control group only performed an orchiectomy for testicular examination, ligation group vas deferens only, group performed release ligation of vas deferens, and group performed release ligation of vas deferens and given EPO injection with dose of 1000 iu/kg BW intraperitoneally for 1 week (3x/week). Observation of spermatogonium, Sertoli cells and Leydig cells by counting the amount on the 5 cross sections of the seminiferous tubules using a 400x light magnification microscope with Haematoxylin Eosin staining. Results: Ligation of vas deferens can significantly decreased the number of spermatogonia and Sertoli cells (p<0.05). In Leydig cells there was no significant difference in numbers after ligation of vas deferens (p>0.05). Release of vas deferens ligation turned out to be no significant amount difference in spermatogonia, Sertoli cells, and Leydig cells with ligation of vas deferens group. Similarly, the treatment of ligation vas deferens release and an EPO injection for 1 week was also no significant difference in number compared to the ligation release group of vas deferens. Conclusion: The number of Sertoli cells, Leydig cells, and spermatogonia in the ligation release group of vas deferens and given EPO for 1 week had the same number with the ligation release group vas deferens.

ASTAXANTHIN MENGHAMBAT PENURUNAN JUMLAH SEL LEYDIG DAN KADAR TESTOSTERON PADA TIKUS WISTAR JANTAN YANG DIPAPAR DENGAN ASAP ROKOK

2020 ◽  
Vol 3 (1) ◽  
pp. 56-64
Author(s):  
Andrew Lie ◽  
Wimpie Pangkahila ◽  
L.P. Iin Indrayani Maker
Keyword(s):  
Cell Count ◽  
Cigarette Smoke ◽  
Leydig Cell ◽  
Testosterone Level ◽  
Leydig Cells ◽  
Wistar Rats ◽  
Control Group ◽  
Study Group ◽  
Significant Difference ◽  
Male Wistar Rats

Background. The exposure of cigarette smoke impacts negatively on Leydig cell count and testosterone level. Astaxanthin is known for its ability to neutralize free radicals far more potent than any other kind of antioxidant. Research objectives. This research aims to prove the effect of Astaxanthin in inhibiting decrease of Leydig cell count and testosterone level in male Wistar rats exposed with cigarette smoke. Methodology. The posttest only control group study design was conducted on 36 male Wistar rats, 12-16 weeks in age, with 200-210 grams body weight. Samples were randomly divided into two groups, consisting of a control group exposed with cigarette smoke and 0.5 ml of aquadest and a study group exposed with cigarette smoke and 0.1 mg of astaxanthin/200 gr BW daily for 30 days. On day 31, blood samples were taken to measure the testosterone level. Both testes were taken for Leydig cells count assessment. Comparative analysis was done to see any significant difference between the study and control group. Research results. The results show that the mean number of Leydig cells and testosterone levels in the study group was significantly higher than the control group (p<0.01). Conclusion. Oral astaxanthin administration inhibited the decrease of Leydig cell count and testosterone level in male Wistar rats exposed with cigarette smoke. Key words: Astaxanthin, Testosterone, Leydig Cell, Andropause

The Number of Leydig Cells, Sertoli Cells, and Spermatogonia are Lower towards a Little Rats that Their Parent Given Genistein during Periconception Period

2017 ◽  
Vol 3 (2) ◽  
pp. 1
Author(s):  
Ni Nyoman Budiani ◽  
I Nyoman Mangku Karmaya ◽  
IB Putra Manuaba ◽  
Bagus Komang Satriyasa
Keyword(s):  
Sertoli Cells ◽  
Leydig Cells ◽  
Design Method ◽  
White Female ◽  
Control Group ◽  
Control Group Design ◽  
Endocrine Disrupting Chemical ◽  
Endocrine Disrupting ◽  
Post Test ◽  
Female Wistar Rats

The testis was composed by the cells of Leydig, Sertoli, and Spermatogenic. The cells formation itself was able to be disrupted by exposure to an endocrine disrupting chemical (EDC) since the prenatal period. The research was intended to prove that Genistein could obstruct the formation of Leydig cells, Sertoli cells, Spermatogenic of rats. The randomized post-test only control group design method was conducted towards white female Wistar rats, 12-13 weeks old, has been had one child, could normally eat and drink. The analysis unit was the child of mother rat treatment group that given Genistein of 10 mg/kg/day and the control group that received distilled water, each of them were 15. The research was done in the Laboratory of Faculty of Veterinary Medical, Udayana University, from January to July 2016. The computer was used for analyzing the data using, with α of 0.05. The result was the Genistein child had an average of 5.464 Sertoli cell, 11.120 Leydig cell, and 48.427 spermatogonia, whereas, the control group had an average of 8.173 Leydig cells, 12.987 Sertoli cells, and 69.547 spermatogonia. There were significant differences between the two groups (p 0.000). The conclusion was that an average of Leydig cells, Sertoli cells, and Spermatogonia lower in children whose their parent rats given Genistein during Periconception period.

scholarly journals Spermatogonial behavior in rats during radiation-induced arrest and recovery after hormone suppression

Reproduction ◽  
2013 ◽  
Vol 146 (4) ◽  
pp. 363-376 ◽  
Author(s):  
Amanda V Albuquerque ◽  
Fernanda R C L Almeida ◽  
Connie C Weng ◽  
Gunapala Shetty ◽  
Marvin L Meistrich ◽  
...  
Keyword(s):  
Sertoli Cell ◽  
Leydig Cell ◽  
Sertoli Cells ◽  
Leydig Cells ◽  
Gradual Increase ◽  
Immunohistochemical Analysis ◽  
Type A ◽  
Kit Ligand ◽  
Kit Receptor ◽  
Radiation Induced

Ionizing radiation has been shown to arrest spermatogenesis despite the presence of surviving stem spermatogonia, by blocking their differentiation. This block is a result of damage to the somatic environment and is reversed when gonadotropins and testosterone are suppressed, but the mechanisms are still unknown. We examined spermatogonial differentiation and Sertoli cell factors that regulate spermatogonia after irradiation, during hormone suppression, and after hormone suppression combined with Leydig cell elimination with ethane dimethane sulfonate. These results showed that the numbers and cytoplasmic structure of Sertoli cells are unaffected by irradiation, only a few type A undifferentiated (Aund) spermatogonia and even fewer type A1 spermatogonia remained, and immunohistochemical analysis showed that Sertoli cells still produced KIT ligand (KITLG) and glial cell line-derived neurotrophic factor (GDNF). Some of these cells expressed KIT receptor, demonstrating that the failure of differentiation was not a result of the absence of the KIT system. Hormone suppression resulted in an increase in Aund spermatogonia within 3 days, a gradual increase in KIT-positive spermatogonia, and differentiation mainly to A3 spermatogonia after 2 weeks. KITL (KITLG) protein expression did not change after hormone suppression, indicating that it is not a factor in the stimulation. However, GDNF increased steadily after hormone suppression, which was unexpected since GDNF is supposed to promote stem spermatogonial self-renewal and not differentiation. We conclude that the primary cause of the block in spermatogonial development is not due to Sertoli cell factors such (KITL\GDNF) or the KIT receptor. As elimination of Leydig cells in addition to hormone suppression resulted in differentiation to the A3 stage within 1 week, Leydig cell factors were not necessary for spermatogonial differentiation.

Cultured Sertoli cell-mediated FSH stimulatory effect on Leydig cell steroidogenesis

1985 ◽  
Vol 248 (2) ◽  
pp. E176-E181
Author(s):  
M. Benahmed ◽  
J. Reventos ◽  
E. Tabone ◽  
J. M. Saez
Keyword(s):  
Sertoli Cell ◽  
Leydig Cell ◽  
Sertoli Cells ◽  
Leydig Cells ◽  
Cell Function ◽  
Cell Activity ◽  
Defined Medium ◽  
Cell Number ◽  
Two Parameters ◽  
Leydig Cell Function

To determine the precise role of Sertoli cells in the stimulating effects of follicle stimulating hormone (FSH) on Leydig cell activity, porcine purified Leydig and Sertoli cells were cultured separately or together in a chemically defined medium in the absence or presence of porcine, FSH 50 ng/ml. Leydig cell activity was evaluated using two parameters: human chorionic gonadotropin (hCG) binding sites; and hCG-stimulated cAMP production and testosterone secretion. First, it was found that FSH increases Leydig cell activity in crude Leydig cell preparations (40–60% of Leydig cells), whereas it exerts no effect on purified Leydig cells (greater than 90% of Leydig cells). Second, FSH stimulates the activity of Leydig cells cocultured with Sertoli cells, whereas it remains without effect on purified Leydig cells cultured alone. This stimulating effect of FSH on Leydig cell activity is dependent on the Sertoli cell number in the coculture. These data 1) show that the stimulating effect of FSH on Leydig cell function is mediated by Sertoli cells and 2) support the concept of local control of Leydig cell function originating from Sertoli cells.

scholarly journals Dosis Efektif Enoxaparin dalam Mencegah Terjadinya Trombosis pada Anastomosis Arteri Femoralis Tikus

2017 ◽  
Vol 1 (2) ◽  
pp. 34
Author(s):  
I Made Suka Adnyana ◽  
Iswinarno Doso Saputro
Keyword(s):  
Free Flap ◽  
Rattus Norvegicus ◽  
Control Group ◽  
Control Group Design ◽  
Group Design ◽  
Wistar Strain ◽  
Post Test

Tujuan: untuk mengetahui dosis efektif enoxaparin dalam mencegah terjadinya trombosis pada anastomosis mikrovaskular. Metode: penelitian ini bersifat eksperimental dengan rancangan the randomized post test only control group design. Terdapat 33 tikus jantan Rattus norvegicus Wistar strain yang dikelompokkan menjadi tiga perlakuan yaitu perlakuan A (enoxaparin 0,75 mg/kg), B (enoxaparin 1  mg/kg), dan C (kontrol). Tuck model anastomosis dilakukan pada arteri femoralis, kemudian luas trombus yang terjadi pada pembuluh darah dibandingkan dengan diameter lumen pembuluh darah diukur dengan graticule lens dan dinyatakan dalam persen. Hasil: trombus terbentuk pada semua subyek penelitian baik pada kelompok perlakuan maupun kontrol. Rerata persentase luas trombus pada kelompok enoxaparin 0,75 mg/kg adalah 24,3%, enoxaparin 1 mg/kg sebesar 19,8% dan kelompok NaCl 0,9% sebesar 79,4%. Terdapat perbedaan antara perlakuan pemberian enoxaparin dosis 0,75 mg/kg dan 1 mg/kg dengan kontrol, namun tidak ada perbedaan bermakna rerata persentase luas trombus diantara kelompok enoxaparin dosis 0,75 mg/kg dan dosis 1 mg/kg (p=0,624). Perlu dilakukan penelitian secara klinis guna melihat efektivitas enoxaparin dalam meningkatkan patensi anastomosis pada free flap maupun replantasi. Simpulan: pemberian enoxaparin dosis 0,75 mg/kg dan enoxaparin dosis 1 mg/kg secara subkutan efektif mengurangi persentase luas trombus pada anastomosis arteri femoralis tikus. Tidak terdapat perbedaan efektivitas yang bermakna dalam mengurangi persentase luas trombus pada anastomosis arteri femoralis tikus setelah diberikan dosis enoxaparin 0,75 mg/kg dan 1 mg/kg secara subkutan.

Age-related changes in human Leydig cell status

2020 ◽  
Vol 35 (12) ◽  
pp. 2663-2676
Author(s):  
Valentina Mularoni ◽  
Valentina Esposito ◽  
Sara Di Persio ◽  
Elena Vicini ◽  
Gustavo Spadetta ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Sertoli Cell ◽  
Leydig Cell ◽  
Leydig Cells ◽  
Cell Number ◽  
Organ Donors ◽  
Steroidogenic Enzymes ◽  
Age Related ◽  
Age Range

Abstract STUDY QUESTION What are the consequences of ageing on human Leydig cell number and hormonal function? SUMMARY ANSWER Leydig cell number significantly decreases in parallel with INSL3 expression and Sertoli cell number in aged men, yet the in vitro Leydig cell androgenic potential does not appear to be compromised by advancing age. WHAT IS KNOWN ALREADY There is extensive evidence that ageing is accompanied by decline in serum testosterone levels, a general involution of testis morphology and reduced spermatogenic function. A few studies have previously addressed single features of the human aged testis phenotype one at a time, but mostly in tissue from patients with prostate cancer. STUDY DESIGN, SIZE, DURATION This comprehensive study examined testis morphology, Leydig cell and Sertoli cell number, steroidogenic enzyme expression, INSL3 expression and androgen secretion by testicular fragments in vitro. The majority of these endpoints were concomitantly evaluated in the same individuals that all displayed complete spermatogenesis. PARTICIPANTS/MATERIALS, SETTING, METHODS Testis biopsies were obtained from 15 heart beating organ donors (age range: 19–85 years) and 24 patients (age range: 19–45 years) with complete spermatogenesis. Leydig cells and Sertoli cells were counted following identification by immunohistochemical staining of specific cell markers. Gene expression analysis of INSL3 and steroidogenic enzymes was carried out by qRT-PCR. Secretion of 17-OH-progesterone, dehydroepiandrosterone, androstenedione and testosterone by in vitro cultured testis fragments was measured by LC-MS/MS. All endpoints were analysed in relation to age. MAIN RESULTS AND THE ROLE OF CHANCE Increasing age was negatively associated with Leydig cell number (R = −0.49; P &lt; 0.01) and concomitantly with the Sertoli cell population size (R= −0.55; P &lt; 0.001). A positive correlation (R = 0.57; P &lt; 0.001) between Sertoli cell and Leydig cell numbers was detected at all ages, indicating that somatic cell attrition is a relevant cellular manifestation of human testis status during ageing. INSL3 mRNA expression (R= −0.52; P &lt; 0.05) changed in parallel with Leydig cell number and age. Importantly, steroidogenic capacity of Leydig cells in cultured testis tissue fragments from young and old donors did not differ. Consistently, age did not influence the mRNA expression of steroidogenic enzymes. The described changes in Leydig cell phenotype with ageing are strengthened by the fact that the different age-related effects were mostly evaluated in tissue from the same men. LIMITATIONS, REASONS FOR CAUTION In vitro androgen production analysis could not be correlated with in vivo hormone values of the organ donors. In addition, the number of samples was relatively small and there was scarce information about the concomitant presence of potential confounding variables. WIDER IMPLICATIONS OF THE FINDINGS This study provides a novel insight into the effects of ageing on human Leydig cell status. The correlation between Leydig cell number and Sertoli cell number at any age implies a connection between these two cell types, which may be of particular relevance in understanding male reproductive disorders in the elderly. However aged Leydig cells do not lose their in vitro ability to produce androgens. Our data have implications in the understanding of the physiological role and regulation of intratesticular sex steroid levels during the complex process of ageing in humans. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by grants from Prin 2010 and 2017. The authors have no conflicts of interest. TRIAL REGISTRATION NUMBER N/A.

248. Oestrogen receptor beta is involved in the regulation of Leydig cell number in the mouse

2005 ◽  
Vol 17 (9) ◽  
pp. 99
Author(s):  
M. Gould ◽  
H. D. Nicholson
Keyword(s):  
Leydig Cell ◽  
Sertoli Cells ◽  
Leydig Cells ◽  
Oestrogen Receptor ◽  
Physiological Role ◽  
Plasma Testosterone ◽  
Testis Weight ◽  
Wild Type ◽  
Significant Difference ◽  
Receptor Beta

Recent evidence suggests that oestrogen plays a physiological role in the testis. Both oestrogen receptor alpha and oestrogen receptor beta (ERb) are present in the testis and administration of oestrogen has been shown to inhibit the development of Sertoli, Leydig and germ cells. This study investigates the effect of ERb on the testis using ERb knockout mice (bERKO). Adult male bERKO mice (n=8) and their wild-type littermates (n=7) were killed at 11 weeks postpartum. One testis from each animal was fixed in Bouin’s fluid and embedded. Each testis was fractionated and thick sections cut and stained with PAS. The optical disector method was used to count the number of Leydig cells, Sertoli cells, spermatogonia, spermatocytes and spermatids in each testis. Trunk blood was collected and plasma testosterone concentrations measured by radioimmunoassay. No significant differences in body or testis weight were seen between the bERKO or wild-type mice. Similar numbers of Sertoli cells, spermatogonia, spermatocytes and spermatids were also observed between the two groups. The number of Leydig cells was significantly increased in bERKO mice compared with their wild-type littermates (P < 0.05). Despite the increased number of Leydig cells in the bERKO mice there was no significant difference in plasma testosterone concentrations in this group compared to the wild-type mice. Oestrogen has been reported to inhibit proliferation of adult-type Leydig cells and to inhibit steroidogenesis. This study suggests that the regulation of Leydig cell proliferation may be mediated by ERb. The presence of normal circulating testosterone concentrations in bERKO mice suggests that the effects of oestrogen on steroidogenesis are not brought about by ERbeta.

Analysis of Testicular Toxicity of Solanine in Mice

2011 ◽  
Vol 282-283 ◽  
pp. 195-200
Author(s):  
Yu Bin Ji ◽  
Jing Chao Sun ◽  
Lang Lang
Keyword(s):  
Sertoli Cells ◽  
Leydig Cells ◽  
Pathological Change ◽  
Reproductive Toxicity ◽  
Reproductive Function ◽  
Control Group ◽  
Testicular Toxicity ◽  
Male Reproductive Function ◽  
Testicular Weight ◽  
Test Concentration

Solanine is one of chemicalcomponents in the tuber and the sprout of the potato which is toxic to human. Some studies on the toxicity of solanine on humans and animals have been reported, little is known about the mechanism of its testicular toxicity. In present study, the toxicity of solanine on male reproductive function was investigated in adult male Kunming mice. Compared with the control group, there was an obvious pathological change in testis, and the expression levels of 3β-HSD and vimentin decreased when the test concentration of solanine was at 21 mg/kg/day. Meanwhile, there was a significant dose- and duration-dependent reduction in the testicular weight and organ coefficient. However, no changes have been detected about the level of testosterone and there was a dramatic increase in the expression of LH in Leydig cells. Results of this study suggested that solanine leaded to male reproductive toxicity influencing the functions of Sertoli cells and Leydig cells.

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