scholarly journals Use of antibodies against LH receptor, 3beta-hydroxysteroid dehydrogenase and vimentin to characterize different types of testicular tumour in dogs

Reproduction ◽  
2001 ◽  
pp. 287-296 ◽  
Author(s):  
MA Peters ◽  
KJ Teerds ◽  
I van der Gaag ◽  
DG de Rooij ◽  
FJ van Sluijs
Keyword(s):  
Sertoli Cell ◽  
Leydig Cell ◽  
Leydig Cells ◽  
Hydroxysteroid Dehydrogenase ◽  
Histological Diagnosis ◽  
Lh Receptor ◽  
Testicular Tumours ◽  
Sertoli Cell Tumours ◽  
Mixed Tumours ◽  
Leydig Cell Tumours

Testicular tumours in dogs are of Sertoli cell, Leydig cell or germinal origin and mixed tumours are also frequently observed. The cellular components of mixed tumours are usually identified by histological examination but sometimes this is difficult. In this study, a panel of specific antibodies was used to identify the different cell types in testicular tumours by immunohistochemistry. Leydig cells were identified using an antibody against the LH receptor and an antibody against the steroidogenic enzyme 3beta-hydroxysteroid dehydrogenase (3beta-HSD), both of which are characteristic of Leydig cells in testes. Sertoli cells were identified using an antibody against the intermediate filament vimentin. Seminoma cells did not stain with any of these antibodies. Vimentin was used only in histologically complex cases. Eighty-six tumours, diagnosed histologically as 29 Sertoli cell tumours, 25 Leydig cell tumours, 19 seminomas and 13 mixed tumours, were studied. Feminization was observed in 17 dogs. Leydig cell tumours stained positively with the antibodies against the LH receptor and 3beta-HSD, whereas seminomas and Sertoli cell tumours were negative (unstained). The antibody against vimentin stained both Sertoli and Leydig cells, and tumours arising from these cells, but not seminomas. Immunohistochemistry revealed that three tumours identified histologically as Sertoli cell tumours were actually Leydig cell tumours. In 14 dogs the histological diagnosis appeared to be incomplete, as mixed tumours instead of pure types of tumours were identified in 11 dogs, and in three dogs mixed tumours appeared to be pure types. Hence, the histological diagnosis was insufficient in approximately 20% of dogs. Furthermore, immunohistochemical analysis of testis tumours revealed that feminization occurred in dogs with Sertoli cell tumours or Leydig cell tumours and their combinations, but not in dogs with a seminoma. In conclusion, incubation with antibodies against LH receptor and 3beta-HSD proved to be a consistently reliable method for identification of Leydig cell tumours in dogs. Vimentin can be used to discriminate between Sertoli cell tumours and seminomas. Overall, this panel of antibodies can be very useful for determination of the identity of testicular tumours in which histological characterization is complicated and the pathogenesis of feminization is not clear.

Spermatogenesis and testicular tumours in ageing dogs

Reproduction ◽  
2000 ◽  
pp. 443-452 ◽  
Author(s):  
MA Peters ◽  
DG de Rooij ◽  
KJ Teerds ◽  
I van Der Gaag ◽  
FJ van Sluijs
Keyword(s):  
Sertoli Cell ◽  
Leydig Cell ◽  
Seminiferous Tubules ◽  
Score System ◽  
Testicular Tumours ◽  
Severe Impairment ◽  
Per Se ◽  
Testicular Disease ◽  
Sertoli Cell Tumours ◽  
Leydig Cell Tumours

Spermatogenesis was examined in testes from 74 dogs of various breeds without clinically detected testicular disease. A modified Johnsen score system was used to determine whether spermatogenesis deteriorates with ageing. The diameter of seminiferous tubules was measured in dogs without testicular disease to examine other possible effects of ageing on tubular performance. There appeared to be no relation between age and these variables. The influence of testicular tumours on spermatogenesis was also investigated in both affected and unaffected testes. The testes of 28 dogs with clinically palpable tumours and 21 dogs with clinically non-palpable tumours were investigated. In cases of unilateral occurrence of a tumour, impairment of spermatogenesis was observed only in the affected testis of dogs with clinically detected tumours. Bilateral occurrence of tumours, whether detected clinically or non-clinically, was associated with severe impairment of spermatogenesis. The prevalence of tumours increased during ageing. Eighty-six per cent of the clinically detected and 57% of the non-clinically detected tumours were found in old dogs. Multiple types of tumour and bilateral occurrence were very common. Seminomas and Leydig cell tumours were more frequent than Sertoli cell tumours. It was concluded that spermatogenesis per se did not decrease during ageing in dogs but the occurrence of testicular tumours increased with ageing and affected spermatogenesis significantly, as reflected by a lower Johnsen score.

scholarly journals Expression of Selected Markers in Immunohistochemical Diagnosis of Canine and Human Testicular Tumours

2015 ◽  
Vol 59 (1) ◽  
pp. 99-106
Author(s):  
Rafał Ciaputa ◽  
Marcin Nowak ◽  
Janusz A. Madej ◽  
Izabela Janus ◽  
Elżbieta Górzyńska ◽  
...  
Keyword(s):  
Sertoli Cell ◽  
Von Willebrand Factor ◽  
Leydig Cell ◽  
Chromogranin A ◽  
Testicular Tumours ◽  
Immunohistochemical Diagnosis ◽  
Von Willebrand ◽  
Willebrand Factor ◽  
Sertoli Cell Tumours ◽  
Leydig Cell Tumours

Abstract Immunohistochemical profiles of the most common canine testicular tumours, including the Leydig cell tumours, seminomas, and Sertoli cell tumours were analysed, and the results were compared with those obtained in the corresponding types of human testicular neoplasms. The expressions of vimentin, von Willebrand factor (FVIII), chromogranin A, synaptophysin, and MCM3 were quantified. In the case of Sertoli cell tumours, only canine ones were analysed, since this type of tumour is very rarely diagnosed in men. The expression of the analysed proteins in the testicular tumours was similar. The von Willebrand factor exhibited the strongest expression in Leydig cell tumours in dogs and men, while vimentin was expressed more strongly in dogs (96.7% had an intensity at +++) than in men (62.5% had +++) in the Leydigioma. The immunoexpression of MCM3 in seminomas was high in both men and dogs – 90% +++ and 100% +++ respectively. The lack of chromogranin A and synaptophysin was observed in almost 100% of seminomas in men and dogs. This differed from the results obtained for Leydigioma, where chromogranin A was expressed in 70% of dogs at +++ and in 100% of men at ++++. The results may indicate that the antibodies were selected correctly. Their analysis and interpretation provides valuable information concerning the nature of the studied tumours.

NEW VIEWS ON THE HORMONE-PRODUCING MESENCHYMOMAS OF THE OVARIES

1960 ◽  
Vol XXXV (IV) ◽  
pp. 513-517
Author(s):  
W. P. Plate
Keyword(s):  
Granulosa Cell ◽  
Sertoli Cell ◽  
Leydig Cell ◽  
Cell Tumour ◽  
Theca Cell ◽  
Granulosa Cell Tumour ◽  
Sertoli Cell Tumours ◽  
Leydig Cell Tumours

ABSTRACT The hormone-producing mesenchymomas of the ovaries can be divided into androblastomas and gynaecoblastomas. The former are derived from »male« elements, and consist of Sertoli-cell tumours and Leydig-cell tumours. The latter arise from »female« elements and consist of granulosacell tumours and theca-cell tumours. Sertoli-cell tumours and granulosacell tumours produce oestrogens, while Leydig-cell tumours and theca-cell tumours produce oestrogens or androgens. Histologically, androblastomas and gynaecoblastomas are often difficult to distinguish. Since no »female« elements occur in a testicle, a granulosa-cell tumour in a testicle is improbable. Gynandroblastomas, therefore, can only be found in an ovary.

scholarly journals Immunohistochemical Detection of Inhibin-α, -βB, and -βA Chains and 3β-hydroxysteroid Dehydrogenase in Canine Testicular Tumors and Normal Testes

2001 ◽  
Vol 38 (6) ◽  
pp. 661-666 ◽  
Author(s):  
H. Taniyama ◽  
K. Hirayama ◽  
K. Nakada ◽  
K. Numagami ◽  
N. Yaosaka ◽  
...  
Keyword(s):  
Sertoli Cell ◽  
Leydig Cell ◽  
Leydig Cells ◽  
Hydroxysteroid Dehydrogenase ◽  
Surgical Removal ◽  
Immunohistochemical Detection ◽  
Testicular Tumors ◽  
Positive Reactivity ◽  
Sertoli Cell Tumors ◽  
Leydig Cell Tumors

Immunohistochemical detection of inhibin-α, -βA and -βB chains and 3β-hydroxysteroid dehydrogenase (HSD) was carried out on primary testicular tumors from 15 dogs and normal testes from three adult dogs. Histopathologically, the tumors were composed of three types: Leydig cell tumors in five dogs, Sertoli cell tumors in five dogs, and seminoma in five dogs. In normal testes, immunostaining against inhibin-α, -βA, and -βB chains and 3β-HSD revealed positive reactivity in the cytoplasm of Leydig cells. In testicular tumors, immunoreactive cells against inhibin-α, -βA, and -βB chains and 3β-HSD were localized in all Leydig cell tumors but not in any Sertoli cell tumors or seminomas. The results of radioimmunoassay for plasma inhibin in dogs with Leydig cell tumors showed higher concentrations than those in dogs with Sertoli cell tumors and seminomas and those in normal dogs. The concentration of inhibin in the plasma was markedly decreased by the surgical removal of the Leydig cell tumor in one dog. Our findings suggest that inhibin is synthesized by normal and neoplastic Leydig cells in the canine testis, and the secreted inhibin may be inhibin A and inhibin B.

scholarly journals Ageing, testicular tumours and the pituitary-testis axis in dogs

2000 ◽  
Vol 166 (1) ◽  
pp. 153-161 ◽  
Author(s):  
MA Peters ◽  
FH de Jong ◽  
KJ Teerds ◽  
DG de Rooij ◽  
SJ Dieleman ◽  
...  
Keyword(s):  
Sertoli Cell ◽  
Leydig Cell ◽  
Venous Blood ◽  
Cell Tumour ◽  
Age Related ◽  
Sertoli Cell Tumour ◽  
Leydig Cell Tumour ◽  
Sertoli Cell Tumours ◽  
Leydig Cell Tumours ◽  
Age Related Changes

Dogs of different ages without testicular diseases were evaluated to study possible age-related changes in hormone concentrations in serum. Dogs with testicular tumours were also investigated to study the relation between tumour type and hormone concentrations; in this study, dogs with Sertoli cell tumours, Leydig cell tumours and seminomas were included. We measured testosterone, oestradiol, LH, FSH and inhibin-like immunoreactivity concentrations in peripheral venous and testicular venous blood of these animals. In normal dogs there appeared to be no age-related changes in the concentrations of the investigated hormones, except for a significant age-related decrease in oestradiol concentrations in testicular venous blood (P<0.02). Dogs with a Sertoli cell tumour had greater oestradiol concentrations and inhibin-like immunoreactivity in both peripheral and testicular venous blood than did dogs without a neoplasm (P<0. 05). Testosterone concentrations were reduced in dogs with Sertoli cell tumours, as were FSH and LH. Feminisation occurred in eight of 13 dogs with a Sertoli cell tumour and in two of 14 dogs with a Leydig cell tumour; it was accompanied by a significantly greater oestradiol concentration than in normal dogs and in dogs with Sertoli cell tumours without signs of feminisation. Dogs with a Leydig cell tumour had greater concentrations of oestradiol and inhibin-like immunoreactivity in both peripheral venous and testicular venous blood than did dogs without a neoplasm (P<0.05). The testosterone concentration in testicular venous blood of these dogs was lower than that in dogs with normal testes. The concentration of LH in peripheral venous blood was also reduced (P<0. 05). Hormone concentrations in dogs with a seminoma were not different from those in normal dogs. It was concluded that seminomas are not endocrinologically active. In contrast, both Sertoli cell tumours and Leydig cell tumours can cause increased oestrogen production leading to signs of feminisation. These tumours also have considerable amounts of inhibin-like immunoreactivity, but only in Sertoli cell tumours does this result in a reduction in FSH concentrations, suggesting that Sertoli cell tumours secrete dimeric inhibin, whereas Leydig cell tumours presumably produce loose alpha-subunits that cross-react in the inhibin assay but are not biologically active.

Aromatase and 11β-hydroxysteroid dehydrogenase 2 localisation in the testes of pigs from birth to puberty linked to changes of hormone pattern and testicular morphology

2008 ◽  
Vol 20 (4) ◽  
pp. 505 ◽  
Author(s):  
A. Wagner ◽  
R. Claus
Keyword(s):  
Blood Plasma ◽  
Sertoli Cell ◽  
Germ Cells ◽  
Leydig Cells ◽  
Hydroxysteroid Dehydrogenase ◽  
Blood Collection ◽  
Testicular Development ◽  
Post Mortem ◽  
Cell Numbers ◽  
Testicular Morphology

Oestrogens and glucocorticoids are important for spermatogenesis and are regulated via aromatase for oestradiol synthesis and 11β-hydroxysteroid dehydrogenase 2 (11β-HSD 2) as an inactivator of cortisol. In the present study postnatal changes of these two enzymes were monitored together with testicular development and hormone concentrations. Pigs were assigned to three periods: Weeks 0–5, Weeks 5–11 or Weeks 11–17. In Period 1, groups of four piglets were killed after each week. Blood plasma and testes were sampled immediately post mortem. For Periods 2 and 3, groups of six pigs were fitted with vein catheters for daily blood collection. Testes from all pigs were obtained after killing. Levels of testosterone, oestradiol, LH, FSH and cortisol were determined radioimmunologically. The 11β-HSD 2- and aromatase-expressing cells were stained immunocytochemically. All hormones were maximal 2 weeks after birth. A rise of LH, testosterone and oestradiol occurred again at Week 17. FSH and cortisol remained basal. Parallel to the first postnatal rise, the presence of aromatase and 11β-HSD 2 in Leydig cells increased, together with germ and Sertoli cell numbers. Expression was low from 3 to 5 weeks, was resumed after Week 5 and was maximal at Week 17. The amount of 11β-HSD 2 in germ cells was greatest at birth, decreased thereafter and was absent after Week 3.

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.

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 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.

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