1,715 results match your criteria testicular steroidogenic


Activation of C-C motif chemokine receptor 2 modulates testicular macrophages number, steroidogenesis, and spermatogenesis progression.

Cell Tissue Res 2021 Jul 23. Epub 2021 Jul 23.

Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.

The monocyte chemoattractant protein 1 (MCP-1) belongs to the CC chemokine family and acts in the recruitment of C-C motif chemokine receptor 2 (CCR2)-positive immune cell types to inflammation sites. In testis, the MCP-1/CCR2 axis has been associated with the macrophage population's functional regulation, which presents significant functions supporting germ cell development. In this context, herein, we aimed to investigate the role of the chemokine receptor CCR2 in mice testicular environment and its impact on male sperm production. Read More

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Chronic low-level perfluorooctane sulfonate (PFOS) exposure promotes testicular steroidogenesis through enhanced histone acetylation.

Environ Pollut 2021 Sep 4;284:117518. Epub 2021 Jun 4.

Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China. Electronic address:

Perfluorooctane sulfonate (PFOS), an artificial perfluorinated compound, has been associated with male reproductive disorders. Histone modifications are important epigenetic mediators; however, the impact of PFOS exposure on testicular steroidogenesis through histone modification regulations remains to be elucidated. In this study, we examined the roles of histone modifications in regulating steroid hormone production in male rats chronically exposed to low-level PFOS. Read More

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September 2021

Effect of Omega-3 or Omega-6 Dietary Supplementation on Testicular Steroidogenesis, Adipokine Network, Cytokines, and Oxidative Stress in Adult Male Rats.

Authors:
Amira Moustafa

Oxid Med Cell Longev 2021 28;2021:5570331. Epub 2021 Jun 28.

Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, 44519 Zagazig, Egypt.

This study was undertaken to elucidate the effect of omega-3 and omega-6 supplementation on the levels of different adipokines and cytokines, as well as the antioxidant system, in relation to male reproductive hormones and testicular functions. Adult male Sprague-Dawley rats were daily gavaged with either physiological saline (control group), sunflower oil (omega 6 group; 1 mL/kg body weight), or fish oil (omega-3 group; 1000 mg/kg body weight) for 12 weeks. The administration of omega-3 or omega-6 resulted in decreased serum concentrations of kisspeptin 1, gonadotropin-releasing hormone, luteinizing hormone, follicle-stimulating hormone, and testosterone. Read More

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Immunohistochemical Characterization of 120 Testicular Sex Cord-Stromal Tumors With an Emphasis on the Diagnostic Utility of SOX9, FOXL2, and SF-1.

Am J Surg Pathol 2021 Mar 22. Epub 2021 Mar 22.

*Department of Pathology and Laboratory Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto †Department of Pathology, Stanford Medical Center, Stanford, CA ‡Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH §Department of Pathology, Indiana University School of Medicine, Indianapolis, IN.

Sex cord-stromal tumors (SCSTs) account for the second most common category of testicular neoplasms and include several entities that may show overlapping morphologies and present diagnostic challenges. We analyzed a cohort of 120 testicular SCSTs and investigated the diagnostic utility of SRY-box transcription factor 9 (SOX9), forkhead box protein L2 (FOXL2), and steroidogenic factor 1 (SF-1) immunohistochemical stains. The results were compared with the more commonly used SCST markers, inhibin α, calretinin, and Wilms' tumor 1 (WT1). Read More

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Sertoli cells as key drivers of testis function.

Semin Cell Dev Biol 2021 Jul 3. Epub 2021 Jul 3.

College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW 2308, Australia.

Sertoli cells are the orchestrators of spermatogenesis; they support fetal germ cell commitment to the male pathway and are essential for germ cell development, from maintenance of the spermatogonial stem cell niche and spermatogonial populations, through meiosis and spermiogeneis and to the final release of mature spermatids during spermiation. However, Sertoli cells are also emerging as key regulators of other testis somatic cells, including supporting peritubular myoid cell development in the pre-pubertal testis and supporting the function of the testicular vasculature and in contributing to testicular immune privilege. Sertoli cells also have a major role in regulating androgen production within the testis, by specifying interstitial cells to a steroidogenic fate, contributing to androgen production in the fetal testis, and supporting fetal and adult Leydig cell development and function. Read More

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Bee bread mitigates down-regulation of steroidogenic genes, decreased spermatogenesis, and epididymal oxidative stress in male rats fed with high-fat diet.

Am J Physiol Endocrinol Metab 2021 07 6. Epub 2021 Jul 6.

Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.

Background: The pituitary-gonadal axis plays an important role in steroidogenesis and spermatogenesis and by extension, fertility.

Objectives: The aim of this study was to investigate the protective role of bee bread, which is a natural bee product, against obesity-induced decreases in steroidogenesis and spermatogenesis.

Methods: Thirty-two adult male Sprague-Dawley rats weighing between 200-300 g were divided into four groups (n=8/group), namely: normal control (NC), high-fat diet (HFD), HFD plus bee bread administered concurrently for 12 weeks (HFD+B), HFD plus orlistat administered concurrently for 12 weeks (HFD+O) groups. Read More

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An autofluorescence-based isolation of Leydig cells for testosterone deficiency treatment.

Mol Cell Endocrinol 2021 Jul 3;535:111389. Epub 2021 Jul 3.

Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China. Electronic address:

Effective procedures for the purification of Leydig cells (LCs) can facilitate functional studies and transplantation therapies. However, current methods to purify LCs from testes are still far from satisfactory. Here, we found that testicular autofluorescence existed in the interstitium along with the gradual maturation of LCs from birth to adulthood. Read More

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Flutamide treatment reveals a relationship between steroidogenic activity of Leydig cells and ultrastructure of their mitochondria.

Sci Rep 2021 Jul 2;11(1):13772. Epub 2021 Jul 2.

Department of Endocrinology, Faculty of Biology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, 30-387, Kraków, Poland.

Our present knowledge on interrelation between morphology/ultrastructure of mitochondria of the Leydig cell and its steroidogenic function is far from satisfactory and needs additional studies. Here, we analyzed the effects of blockade of androgen receptor, triggered by exposure to flutamide, on the expression of steroidogenic proteins (1) and ultrastructure of Leydig cells' constituents (2). We demonstrated that increase in the expression level of steroidogenic (StAR, CYP11A1, 3β-HSD, and CYP19A1) proteins (and respective mRNAs) in rat testicular tissue as well as elevation of intratesticular sex steroid hormone (testosterone and estradiol) levels observed in treated animals correspond well to morphological alterations of the Leydig cell ultrastructure. Read More

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Altered Expression of DAAM1 and PREP Induced by Cadmium Toxicity Is Counteracted by Melatonin in the Rat Testis.

Genes (Basel) 2021 Jun 30;12(7). Epub 2021 Jun 30.

Dipartimento di Medicina Sperimentale, Sez. Fisiologia Umana e Funzioni Biologiche Integrate "F. Bottazzi", Università degli Studi della Campania "Luigi Vanvitelli", via Costantinopoli, 16, 80138 Napoli, Italy.

Cadmium (Cd) is one of the most toxic pollutants for health due to its accumulation in several tissues, including testis. This report confirms that Cd increased oxidative stress and apoptosis of germ and somatic cells and provoked testicular injury, as documented by biomolecular and histological alterations, i.e. Read More

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Review on Bee Products as Potential Protective and Therapeutic Agents in Male Reproductive Impairment.

Molecules 2021 Jun 5;26(11). Epub 2021 Jun 5.

Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.

Bee products are sources of functional food that have been used in complementary medicine to treat a variety of acute and chronic illnesses in many parts of the world. The products vary from location to location as well as country to country. Therefore, the aim of this review was to identify various bee products with potential preventive and therapeutic values used in the treatment of male reproductive impairment. Read More

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Thiamethoxam-induced oxidative stress, lipid peroxidation, and disturbance of steroidogenic genes in male rats: Palliative role of Saussurea lappa and Silybum marianum.

Environ Toxicol 2021 Jun 28. Epub 2021 Jun 28.

Department of Pharmacology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.

Thiamethoxam (TMX) belongs to the neonicotinoid insecticide family and may evoke marked endocrine disruption. In this study, the reproductive toxicity of TMX on male rats was assessed along with the ability of Saussurea lappa (costus roots) and/or Silybum marianum extract (SM) to alleviate TMX toxicity. Male rats were allocated to seven groups and orally treated daily for 4 weeks: Control (saline), Costus (200 mg/kg), SM (150 mg/kg), TMX (78. Read More

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Thymol alleviates imidacloprid-induced testicular toxicity by modulating oxidative stress and expression of steroidogenesis and apoptosis-related genes in adult male rats.

Ecotoxicol Environ Saf 2021 Sep 22;221:112435. Epub 2021 Jun 22.

Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt.

The present work was designed to assess the potential ameliorative effect of thymol on the testicular toxicity caused by imidacloprid (IMI) in adult male rats. Forty adult male rats were allocated into four groups; control group was given corn oil, thymol-treated group (30 mg/kg b.wt), IMI-treated group (22. Read More

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September 2021

Rapid Differentiation of Human Embryonic Stem Cells into Testosterone-Producing Leydig Cell-Like Cells In vitro.

Tissue Eng Regen Med 2021 08 24;18(4):651-662. Epub 2021 Jun 24.

Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 13488, Gyeonggi-do, Republic of Korea.

Background: Leydig cells (LCs) are testicular somatic cells that are the major producers of testosterone in males. Testosterone is essential for male physiology and reproduction. Reduced testosterone levels lead to hypogonadism and are associated with diverse pathologies, such as neuronal dysfunction, cardiovascular disease, and metabolic syndrome. Read More

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Dose-Dependent Effect of Polystyrene Microplastics on the Testicular Tissues of the Male Sprague Dawley Rats.

Dose Response 2021 Apr-Jun;19(2):15593258211019882. Epub 2021 Jun 4.

Department of Physiology, Government College University, Faisalabad, Pakistan.

Due to the continuous increase in polystyrene microplastics (PS MPs) incorporation in the environment, growing number of adverse effects on living organisms and ecosystem have become a global concern. Therefore, current study was planned to elucidate the impacts of 5 different concentrations control, 2, 20, 200, and 2000 μgL of PS MPs on testicular tissues of rats. PS MPs significantly reduced the activities of antioxidant enzymes (catalase, superoxide dismutase and peroxidase) as well as total protein contents, while elevated the level of lipid peroxidation and reactive oxygen species. Read More

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Umbelliferone ameliorates oxidative stress and testicular injury, improves steroidogenesis and upregulates peroxisome proliferator-activated receptor gamma in type 2 diabetic rats.

J Pharm Pharmacol 2021 Jun 22. Epub 2021 Jun 22.

Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.

Objectives: Diabetes mellitus (DM) is a chronic disease associated with serious complications, including male infertility. Umbelliferone (UMB) is a coumarin with promising antioxidant, anti-inflammatory and other beneficial effects. This study investigated the ameliorative effect of UMB against testicular injury, oxidative stress and altered steroidogenesis in rats with type 2 DM. Read More

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Zinc oxide nanoparticles improve testicular steroidogenesis machinery dysfunction in benzo[α]pyrene-challenged rats.

Sci Rep 2021 Jun 3;11(1):11675. Epub 2021 Jun 3.

Medical Research Division, Hormones Department, National Research Center, El-Buhouth Street, Dokki, Cairo, Egypt.

Zinc oxide nanoparticles (ZnO NPs) demonstrate potential positive effects on reproduction. However, their protective role against the reproductive toxicity pollutants has not yet been adequately studied at the molecular level. This study was designed to assess this objective using Benzo[α]pyrene B[a]P as reproductive toxic agent . Read More

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Iprodione and/or chlorpyrifos exposure induced testicular toxicity in adult rats by suppression of steroidogenic genes and SIRT1/TERT/PGC-1α pathway.

Environ Sci Pollut Res Int 2021 May 31. Epub 2021 May 31.

Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.

There is cumulative evidence that iprodione (IPR) fungicide and chlorpyrifos (CPF) insecticide are endocrine disruptors that can evoke reproductive toxicity. Yet, the underlying mechanisms are still unclear. Besides, the outcomes of their co-exposure to male sexual behavior and male fertility are still unknown. Read More

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Testicular inducing steroidogenic cells trigger sex change in groupers.

Sci Rep 2021 May 27;11(1):11117. Epub 2021 May 27.

Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, 905-0227, Japan.

Vertebrates usually exhibit gonochorism, whereby their sex is fixed throughout their lifetime. However, approximately 500 species (~ 2%) of extant teleost fishes change sex during their lifetime. Although phylogenetic and evolutionary ecological studies have recently revealed that the extant sequential hermaphroditism in teleost fish is derived from gonochorism, the evolution of this transsexual ability remains unclear. Read More

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Turmeric and vitamin C mitigate testicular atrophy induced by lead diacetate via regulation of GRP-78/17β-HSD pathways in rat's model.

Andrologia 2021 May 24:e14120. Epub 2021 May 24.

Department of Pharmacology and Toxicology, Pharmacy College, King Saud University, Riyadh, Saudi Arabia.

Occupational and ecological contacts to lead persist as a universal concern. Lead alters most of the physiological processes via enhancing oxidative stress. Thus, this study was purposed to assess the influence of turmeric (TMRC) and/or vitamin C (VIT-C) on Lead diacetate (Lead diAC)-induced testicular atrophy with an emphasis on oxidative stress, inflammation, BAX/STAR and GRP-78/17β-HSD signalling. Read More

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High-fat diet-induced obesity amplifies HSP70-2a and HSP90 expression in testicular tissue; correlation with proliferating cell nuclear antigen (PCNA).

Life Sci 2021 Aug 19;279:119633. Epub 2021 May 19.

Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran. Electronic address:

Aims: Current study was conducted to uncover the effect of high-fat diet (HFD)-induced obesity on heat shock proteins 70-2a and 90 expression levels and to investigate the network between these proteins with PCNA expression, endocrine status of testicular tissue and nucleotide backbone damages.

Main Methods: For this purpose, 20 mature male Wistar rats were divided into two groups of control and HFD-received obese animals (n = 10/group). After 8 weeks from obesity approval, the animals were euthanized. Read More

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Adrenal cortex renewal in health and disease.

Nat Rev Endocrinol 2021 Jul 19;17(7):421-434. Epub 2021 May 19.

Université Côte d'Azur, INSERM, CNRS, Institut de Biologie Valrose, Nice, France.

Resident progenitor and/or stem cell populations in the adult adrenal cortex enable cortical cells to undergo homeostatic renewal and regeneration after injury. Renewal occurs predominantly in the outer layers of the adrenal gland but newly formed cells undergo centripetal migration, differentiation and lineage conversion in the process of forming the different functional steroidogenic zones. Over the past 10 years, advances in the genetic characterization of adrenal diseases and studies of mouse models with altered adrenal phenotypes have helped to elucidate the molecular pathways that regulate adrenal tissue renewal, several of which are fine-tuned via complex paracrine and endocrine influences. Read More

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Experimental Cryptorchidism Causes Chronic Inflammation and a Progressive Decline in Sertoli Cell and Leydig Cell Function in the Adult Rat Testis.

Reprod Sci 2021 May 18. Epub 2021 May 18.

Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia.

Cryptorchidism causes spermatogenic failure and reduced serum androgen levels, as well as testicular oedema and fibrosis, which are hallmarks of inflammation. However, the role of inflammation and the effects of cryptorchidism on Sertoli cell and Leydig cell function at the molecular level remain ill-defined. Bilateral cryptorchidism was surgically induced in adult rats for 7 and 14 weeks. Read More

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Myristic acid defends against testicular oxidative stress, inflammation, apoptosis: Restoration of spermatogenesis, steroidogenesis in diabetic rats.

Life Sci 2021 Aug 11;278:119605. Epub 2021 May 11.

Department of Physiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia. Electronic address:

Diabetes mellitus (DM) may lead to testicular-related infertility while Myristic acid (MA) is beneficial to lower hyperglycaemia. Thus, we hypothesized that MA could protect testes against hyperglycaemia-induced damage in DM. DM was induced in adult male rats by high-fat diet consumption for 12 weeks, accompanied by a single dose streptozotocin injection. Read More

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L-carnitine extenuates endocrine disruption, inflammatory burst and oxidative stress in carbendazim-challenged male rats via upregulation of testicular StAR and FABP9, and downregulation of P38-MAPK pathways.

Toxicology 2021 06 15;457:152808. Epub 2021 May 15.

Department of Pharmacology & Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.

We have addressed in the current study the potential of L-carnitine (LC) to extenuate the reproductive toxic insults of carbendazim (CBZ) in male rats, and the molecular mechanisms whereby carnitine would modify the spermatogenic and steroidogenic derangements invoked by the endocrine disruptor. Herein, animals received daily doses of carbendazim (100 mg/kg) by gavage for 8 weeks. Another CBZ-challenged group was co-supplemented with LC (500 mg/kg, IP) twice weekly for 8 weeks. Read More

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Ameliorative Effects of Boswellic Acid on Fipronil-Induced Toxicity: Antioxidant State, Apoptotic Markers, and Testicular Steroidogenic Expression in Male Rats.

Animals (Basel) 2021 Apr 30;11(5). Epub 2021 Apr 30.

Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33516 Egypt.

The study investigated the ability of boswellic acid (BA) to alleviate the testicular and oxidative injury FPN insecticide intoxication in the male rat model. Rats were randomly assigned to six equivalent groups (six rats each) as the following: control rats orally administered with 2 mL physiological saline/kg of body weight (bwt); boswellic acid (BA1) rats orally administered 250 mg BA/kg bwt; boswellic acid (BA2) rats orally administered 500 mg BA/kg bwt; fipronil (FPN) rats orally administered 20 mg FPN/kg bwt; (FPN + BA1) rats orally administered 20 mg FPN/kg bwt plus 250 mg BA/kg bwt, and (FPN + BA2) rats orally administered 20 mg FPN/kg bwt plus 500 mg BA/kg bwt. After 60 days, semen viability percentage and live spermatozoa percentage were decreased, and a considerably increased abnormality of the sperm cells in FPN-administered rats improved substantially with the co-administration of BA. Read More

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Molecular, Immunomodulatory, and Histopathological Role of Mesenchymal Stem Cells and Beetroot Extract on Cisplatin Induced Testicular Damage in Albino Rats.

Animals (Basel) 2021 Apr 16;11(4). Epub 2021 Apr 16.

Department of Zoology, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo 11757, Egypt.

Cisplatin (Cis) a drug commonly used as a chemotherapeutic agent to treat various types of cancer, inducing testicular damage. The present study aimed to investigate the inhibitory potential of bone marrow-derived mesenchymal stem cells (BM-MSCs) and beetroot extract (BRE) in albino rats after testicular toxicity induced by cisplatin. Thirty adult male albino rats were grouped into: the control group, Cis group receiving a single dose of 7 mg/kg i. Read More

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Testicular steroidogenesis is suppressed during experimental autoimmune encephalomyelitis in rats.

Sci Rep 2021 Apr 26;11(1):8996. Epub 2021 Apr 26.

Department for Neurobiology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11000, Belgrade, Serbia.

Multiple sclerosis (MS) is an autoimmune disease that usually occurs during the reproductive years in both sexes. Many male patients with MS show lower blood testosterone levels, which was also observed in male rats during experimental autoimmune encephalomyelitis (EAE), an animal model of MS. To better understand the causes of decreased testosterone production during EAE, we investigated the expression status of genes and proteins associated with steroidogenesis in the testes. Read More

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Leydig Cell-Specific DAX1-Deleted Mice Has Higher Testosterone Level in the Testis During Pubertal Development.

Reprod Sci 2021 Apr 23. Epub 2021 Apr 23.

School of Biological Sciences and Technology, Chonnam National University, Gwangju, Republic of Korea.

Testosterone, the male sex hormone, is necessary for the development and function of the male reproductive system. Biosynthesis of testosterone in mammals mainly occurs in testicular Leydig cells. Many proteins such as P450c17, 3β-HSD, and StAR are involved in testicular steroidogenesis. Read More

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Portulaca oleracea seeds' extract alleviates acrylamide-induced testicular dysfunction by promoting oxidative status and steroidogenic pathway in rats.

BMC Complement Med Ther 2021 Apr 14;21(1):122. Epub 2021 Apr 14.

Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.

Background: Acrylamide (ACR) is a widespread industrial and food contaminant that garnered considerable attention for its carcinogenic, neurotoxic, and reproductive toxic effects. The antioxidant effects of Portulaca oleracea seeds extract (POS) and its fertility-enhancing effects were inspiring to evaluate the protective potential and pinpoint the mechanisms and molecular targets of the UPLC-MS fingerprinted POS extract on ACR-induced testicular toxicity in rats.

Methods: Male Wistar rats were divided into 6 equal groups of negative control, ACR model (10 mg/kg b. Read More

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Dynamic Remodeling of Membranes and Their Lipids during Acute Hormone-Induced Steroidogenesis in MA-10 Mouse Leydig Tumor Cells.

Int J Mol Sci 2021 Mar 4;22(5). Epub 2021 Mar 4.

The Research Institute, McGill University Health Centre, Montreal, QC H4A 3J1, Canada.

Lipids play essential roles in numerous cellular processes, including membrane remodeling, signal transduction, the modulation of hormone activity, and steroidogenesis. We chose steroidogenic MA-10 mouse tumor Leydig cells to investigate subcellular lipid localization during steroidogenesis. Electron microscopy showed that cAMP stimulation increased associations between the plasma membrane (PM) and the endoplasmic reticulum (ER) and between the ER and mitochondria. Read More

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