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Chakraborty S, Naskar TK, Basu BR. Vitamin D deficiency, insulin resistance, and antimüllerian hormone level: a tale of trio in the expression of polycystic ovary syndrome. F&S SCIENCE 2024:S2666-335X(24)00031-4. [PMID: 38876205 DOI: 10.1016/j.xfss.2024.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/16/2024]
Abstract
OBJECTIVE To study the association between altered vitamin D profiles and different indices as well as clinical features of polycystic ovary syndrome (PCOS), including antimüllerian hormone (AMH) levels, phenotypes (A [hyperandrogenism {HA} + ovulatory dysfunction {OD} + polycystic ovarian morphology {PCOM}], B [HA + OD], C [HA + PCOM], and D [OD + PCOM]), insulin resistance, oligomenorrhea, hyperandrogenism, obesity indices, and stress biomarkers in the ethnic population of West Bengal. DESIGN Case-control observational study. SETTING Outpatient department of gynecology and obstetrics and environing. PARTICIPANTS (PATIENTS AND CONTROL) Sample size: case group (PCOS, n = 160), age: 16-38 years, and their gender, age, as well as ethnicity-matched healthy control (n = 160). INTERVENTION(S) In this observational study, a structured questionnaire for menstrual status and to determine the scores of cutaneous manifestations, a bioelectrical impedance analyzer for measurement of anthropometric indices, relevant biochemical assessments (vitamin D, AMH, insulin, glucose, and other associated hormonal profiles), statistical software for the social sciences, and Microsoft Office Excel were used to evaluate as well as analyze different indices. MAIN OUTCOME MEASURE(S) Study of the association of vitamin D deficiency with differential manifestations of PCOS such as phenotypes of the syndrome, altered AMH levels, and risk of insulin resistance. An attempt has been made to determine the cutoff value of AMH of the patients with PCOS belonging to the ethnic population of West Bengal using receiver operating characteristic (ROC). RESULT(S) Vitamin D deficiency was found to be directly correlated with AMH level in PCOS phenotype A (67%), oligomenorrhea, and PCOM, along with a substantial agonistic relationship with insulin resistance in the PCOS population under study. In the PCOS phenotype B, the AMH level was highest, with a cutoff value of 5.27 ng/mL (asymptotic sig. = 0.000, 95% confidence interval: 8.37-9.95, derived by ROC analysis, with area under the ROC curve- area under the curve value = 0.949, sensitivity=0.882, and specificity = 0.880). Oligomenorrhic women with PCOS possess significantly higher values of AMH levels (8.70 ± 3.66 > 3.09 ± 1.86 ng/mL) level than the regular menstrual rhythm within the same group. Patients with PCOS had significantly less skeletal muscle mass and greater subcutaneous fat content than the control group. CONCLUSION(S) 25-hydroxy-vitamin D might be intermeshed with the underlying pathophysiology and severity of PCOS, as well as associated metabolic disorders like insulin resistance. The AMH level is finely tuned by most of the plausible effectors of PCOS and contends to be a promising biomarker for the diagnosis as well as prognosis of PCOS.
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Affiliation(s)
- Sanchari Chakraborty
- Clinicogenomics Lab, Sir Surendranath Banerjea Advanced Research Centre, Department of Physiology, Surendranath College, University of Calcutta, Kolkata, West Bengal, India
| | - Tapan K Naskar
- Department of Gynaecology and Obstetrics, Medical College, Kolkata, West Bengal, India
| | - Barnali R Basu
- Clinicogenomics Lab, Sir Surendranath Banerjea Advanced Research Centre, Department of Physiology, Surendranath College, University of Calcutta, Kolkata, West Bengal, India.
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Karoii DH, Azizi H, Skutella T. Whole transcriptome analysis to identify non-coding RNA regulators and hub genes in sperm of non-obstructive azoospermia by microarray, single-cell RNA sequencing, weighted gene co-expression network analysis, and mRNA-miRNA-lncRNA interaction analysis. BMC Genomics 2024; 25:583. [PMID: 38858625 PMCID: PMC11165898 DOI: 10.1186/s12864-024-10506-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 06/06/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND The issue of male fertility is becoming increasingly common due to genetic differences inherited over generations. Gene expression and evaluation of non-coding RNA (ncRNA), crucial for sperm development, are significant factors. This gene expression can affect sperm motility and, consequently, fertility. Understanding the intricate protein interactions that play essential roles in sperm differentiation and development is vital. This knowledge could lead to more effective treatments and interventions for male infertility. MATERIALS AND METHODS Our research aim to identify new and key genes and ncRNA involved in non-obstructive azoospermia (NOA), improving genetic diagnosis and offering more accurate estimates for successful sperm extraction based on an individual's genotype. RESULTS We analyzed the transcript of three NOA patients who tested negative for genetic sperm issues, employing comprehensive genome-wide analysis of approximately 50,000 transcript sequences using microarray technology. This compared gene expression profiles between NOA sperm and normal sperm. We found significant gene expression differences: 150 genes were up-regulated, and 78 genes were down-regulated, along with 24 ncRNAs up-regulated and 13 ncRNAs down-regulated compared to normal conditions. By cross-referencing our results with a single-cell genomics database, we identified overexpressed biological process terms in differentially expressed genes, such as "protein localization to endosomes" and "xenobiotic transport." Overrepresented molecular function terms in up-regulated genes included "voltage-gated calcium channel activity," "growth hormone-releasing hormone receptor activity," and "sialic acid transmembrane transporter activity." Analysis revealed nine hub genes associated with NOA sperm: RPL34, CYB5B, GOL6A6, LSM1, ARL4A, DHX57, STARD9, HSP90B1, and VPS36. CONCLUSIONS These genes and their interacting proteins may play a role in the pathophysiology of germ cell abnormalities and infertility.
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Affiliation(s)
- Danial Hashemi Karoii
- Department of Cell and Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
- Faculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran
| | - Hossein Azizi
- Faculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran.
| | - Thomas Skutella
- Institute for Anatomy and Cell Biology, Medical Faculty, University of Heidelberg, Im Neuenheimer Feld 307, 69120, Heidelberg, Germany.
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Chen DL, Guo S, Chen QL, Qiu SJ, Xu YY, Zhang J, Ma HM, Li YH. Complete androgen insensitivity syndrome coexisting with müllerian duct remnants: a case report and literature review. Front Pediatr 2024; 12:1400319. [PMID: 38895190 PMCID: PMC11183786 DOI: 10.3389/fped.2024.1400319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
This study represents the first documentation of the coexistence of complete androgen insensitivity syndrome (CAIS) with Müllerian duct remnants (MDRs) in mainland China. Additionally, we provide a comprehensive review of the existing literature concerning CAIS with MDRs resulting from androgen receptor (AR) gene mutations. This study broadens the clinical spectrum of CAIS and offer novel insights for further exploration into Müllerian duct regression. A 14-year-old patient, initially raised as female, presented to the clinic with complaints of "primary amenorrhea." Physical examination revealed the following: armpit hair (Tanner stage 2), breast development (Tanner stage 4 with bilateral breast nodule diameter of 7 cm), sparse pubic hair (Tanner stage 3), clitoris measuring 0.8 cm × 0.4 cm, separate urethral and vaginal openings, and absence of palpable masses in the bilateral groin or labia majora. The external genital virilization score was 0 points. Serum follicle-stimulating hormone level was 13.43 IU/L, serum luteinizing hormone level was 31.24 IU/L, and serum testosterone level was 14.95 nmol/L. Pelvic magnetic resonance imaging (MRI) did not reveal a uterus or bilateral fallopian tubes, but nodules on both sides of the pelvic wall indicated cryptorchidism. The karyotype was 46,XY. Genetic testing identified a maternal-derived hemizygous variation c.2359C > T (p.Arg787*) in the AR gene. During abdominal exploration, dysplastic testicles and a dysplastic uterus were discovered. Histopathological analysis revealed the presence of fallopian tube-like structures adjacent to the testicles. The CAIS patient documented in this study exhibited concurrent MDRs, thus expanding the spectrum of clinical manifestations of AIS. A review of prior literature suggests that the incidence of CAIS combined with histologically MDRs is not uncommon. Consequently, the identification of MDRs in AIS cases may represent an integral aspect of clinical diagnosis for this condition.
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Affiliation(s)
| | | | | | | | | | - Jun Zhang
- Department of Pediatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | | | - Yan-hong Li
- Department of Pediatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Li L, Lin W, Wang Z, Huang R, Xia H, Li Z, Deng J, Ye T, Huang Y, Yang Y. Hormone Regulation in Testicular Development and Function. Int J Mol Sci 2024; 25:5805. [PMID: 38891991 PMCID: PMC11172568 DOI: 10.3390/ijms25115805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/01/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
The testes serve as the primary source of androgens and the site of spermatogenesis, with their development and function governed by hormonal actions via endocrine and paracrine pathways. Male fertility hinges on the availability of testosterone, a cornerstone of spermatogenesis, while follicle-stimulating hormone (FSH) signaling is indispensable for the proliferation, differentiation, and proper functioning of Sertoli and germ cells. This review covers the research on how androgens, FSH, and other hormones support processes crucial for male fertility in the testis and reproductive tract. These hormones are regulated by the hypothalamic-pituitary-gonad (HPG) axis, which is either quiescent or activated at different stages of the life course, and the regulation of the axis is crucial for the development and normal function of the male reproductive system. Hormonal imbalances, whether due to genetic predispositions or environmental influences, leading to hypogonadism or hypergonadism, can precipitate reproductive disorders. Investigating the regulatory network and molecular mechanisms involved in testicular development and spermatogenesis is instrumental in developing new therapeutic methods, drugs, and male hormonal contraceptives.
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Affiliation(s)
- Lu Li
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Wanqing Lin
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Zhaoyang Wang
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Rufei Huang
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Huan Xia
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Ziyi Li
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Jingxian Deng
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Tao Ye
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
| | - Yadong Huang
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, China
| | - Yan Yang
- Department of Cell Biology, Jinan University, Guangzhou 510632, China; (L.L.); (W.L.); (Z.W.); (R.H.); (H.X.); (Z.L.); (J.D.); (T.Y.)
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, China
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Win-Shwe TT, Abe N, Sakiyama A, Suzuki M, Sano K, Kawashima T, Tsukahara S. In ovo o,p'-DDT exposure induces malformation of reproductive organs and alters the expression of genes controlling sexual differentiation in Japanese quail embryo. J Appl Toxicol 2024; 44:699-711. [PMID: 38102769 DOI: 10.1002/jat.4571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/27/2023] [Accepted: 11/27/2023] [Indexed: 12/17/2023]
Abstract
In ovo exposure to o,p'-dichloro-diphenyl-trichloroethane (o,p'-DDT) impairs reproduction by inducing malformation of the reproductive organs in birds, although the mechanism remains unclear. Here, we examined the effects of o,p'-DDT on the development of the reproductive organs, the expression of genes controlling sexual differentiation, and the plasma concentrations of testosterone and estradiol in Japanese quail embryos. o,p'-DDT-containing sesame oil was injected into the yolk sac on Embryonic Day (E) 3 at a dose of 500, 2,000, or 8,000 μg per egg. On E15, the reproductive organs were observed; the gonads and Müllerian ducts (MDs) were sampled to measure the mRNA of steroidogenic enzymes, sex steroid receptors, anti-Müllerian hormone (AMH), and AMH receptor 2 (AMHR2); blood samples were collected to assay plasma testosterone and estradiol levels; and the gonads were used for histological analysis. o,p'-DDT dose-dependently increased the prevalence of hypertrophic MDs in females and residual MDs in males. In female MDs, o,p'-DDT dose-dependently decreased estrogen receptor (ER) α, ERβ, and AMHR2 mRNA expression. o,p'-DDT dose-dependently induced left-biased asymmetry of testis size, and ovary-like tissue was found in the left testis after exposure to 8,000 μg per egg o,p'-DDT, although asymmetric gene expression did not occur. o,p'-DDT did not affect ovarian tissue but did decrease 17α-hydroxylase/C17-20 lyase mRNA expression and dose-dependently increased ERβ mRNA expression. o,p'-DDT decreased plasma testosterone concentrations in females. These findings suggest that o,p'-DDT induces hypertrophy of the MDs and ovarian tissue formation in the left testis. Abnormal MD development may be linked to altered gene expression for sensing estrogens and AMH signals.
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Affiliation(s)
- Tin-Tin Win-Shwe
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Japan
| | - Natsuko Abe
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Akari Sakiyama
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Maho Suzuki
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Kazuhiro Sano
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Japan
| | - Takaharu Kawashima
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Japan
| | - Shinji Tsukahara
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
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Brochado C, Duran BJ, Kieffer JD, Pinczak A, Menchaca A, Garcia-Guerra A. Reduced embryo yield obtained from superstimulated ewes with low circulating AMH concentration is improved by lengthening the FSH treatment. Theriogenology 2024; 218:79-88. [PMID: 38301510 DOI: 10.1016/j.theriogenology.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
The aim of the present study was to evaluate: 1) the association between AMH, AFC, superovulatory response and embryo yield in sheep; and 2) the effect of FSH treatment length during superstimulation of the first follicular wave on ovarian response and embryo yield, particularly in ewes with low and high AMH. The experiment was performed on 63 Polled Dorset ewes that received an ovarian superstimulatory treatment during the first follicular wave (Day 0 protocol). Ewes were administered a total dose of 240 mg of FSH distributed in six (6-dose regimen, n = 30) or eight (8-dose regimen, n = 33) decreasing doses administered 12 h apart. On Day -9 (random stage of the estrous cycle) and Day 0 (day of the first FSH dose) ovarian ultrasonography was performed and blood samples were collected for AFC and AMH determinations, respectively. A weak positive correlation between AMH and small AFC (follicles <4 mm) was observed (r = 0.23; P = 0.07), and AMH concentration was positively correlated (r = 0.29; P < 0.05) with the number of corpora lutea (CL) determined at embryo collection (i.e., 6 d after insemination). The length of FSH treatment tended (P = 0.06) to affect the ovarian response, such that the number of CL was greater in 8-dose than 6-dose treated ewes, while no differences (P > 0.10) in embryo yield outcomes were observed. For further analysis, ewes were classified into low (<7 ng/mL) and high (>10 ng/mL) serum AMH. In high AMH ewes, there were no differences (P > 0.05) in the number of CL nor embryo yield between the 6-dose and 8-dose treatment (e.g., 7.8 ± 2.4 and 8.3 ± 2.5 transferable embryos, respectively; P = 0.92). Conversely, for low AMH ewes, fertilized ova and embryo yield were greater (P ≤ 0.05) for ewes receiving the 8-dose than the 6-dose superstimulatory treatment (e.g., 8.4 ± 2.8 vs. 2.7 ± 0.9 transferable embryos, respectively, P ≤ 0.05). In conclusion, embryo production in poor responding ewes with low low circulating AMH is improved by extending the superstimulatory treatment length from 6 to 8 FSH doses.
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Affiliation(s)
| | - B J Duran
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - J D Kieffer
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - A Pinczak
- Fundación IRAUy, Montevideo, Uruguay
| | - A Menchaca
- Fundación IRAUy, Montevideo, Uruguay; Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria (INIA), Montevideo, Uruguay.
| | - A Garcia-Guerra
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA.
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Howard JA, Hok L, Cate RL, Sanford NJ, Hart KN, Leach EAE, Bruening AS, Pépin D, Donahoe PK, Thompson TB. Structural Basis of Non-Latent Signaling by the Anti-Müllerian Hormone Procomplex. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.01.587627. [PMID: 38617313 PMCID: PMC11014609 DOI: 10.1101/2024.04.01.587627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Most TGFβ family ligands exist as procomplexes consisting of a prodomain noncovalently bound to a growth factor (GF); Whereas some prodomains confer latency, the Anti-Müllerian Hormone (AMH) prodomain maintains a remarkably high affinity for the GF yet remains active. Using single particle EM methods, we show the AMH prodomain consists of two subdomains: a vestigial TGFβ prodomain-like fold and a novel, helical bundle GF-binding domain, the result of an exon insertion 450 million years ago, that engages both receptor epitopes. When associated with the prodomain, the AMH GF is distorted into a strained, open conformation whose closure upon bivalent binding of AMHR2 displaces the prodomain through a conformational shift mechanism to allow for signaling.
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Affiliation(s)
- James A Howard
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, United States
| | - Lucija Hok
- Department of Molecular & Cellular Biosciences, University of Cincinnati, Cincinnati, OH, United States
| | - Richard L Cate
- Department of Chemistry, Boston University, Boston, MA, United States
| | - Nathaniel J Sanford
- Department of Molecular & Cellular Biosciences, University of Cincinnati, Cincinnati, OH, United States
| | - Kaitlin N Hart
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, United States
| | - Edmund AE Leach
- Department of Molecular & Cellular Biosciences, University of Cincinnati, Cincinnati, OH, United States
| | - Alena S Bruening
- Department of Molecular & Cellular Biosciences, University of Cincinnati, Cincinnati, OH, United States
| | - David Pépin
- Pediatric Surgical Research Laboratories, Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States
| | - Patricia K Donahoe
- Pediatric Surgical Research Laboratories, Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States
| | - Thomas B Thompson
- Department of Molecular & Cellular Biosciences, University of Cincinnati, Cincinnati, OH, United States
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Tan JL, Major AT, Smith CA. Mini review: Asymmetric Müllerian duct development in the chicken embryo. Front Cell Dev Biol 2024; 12:1347711. [PMID: 38380340 PMCID: PMC10877723 DOI: 10.3389/fcell.2024.1347711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/17/2024] [Indexed: 02/22/2024] Open
Abstract
Müllerian ducts are paired embryonic tubes that give rise to the female reproductive tract. In humans, the Müllerian ducts differentiate into the Fallopian tubes, uterus and upper portion of the vagina. In birds and reptiles, the Müllerian ducts develop into homologous structures, the oviducts. The genetic and hormonal regulation of duct development is a model for understanding sexual differentiation. In males, the ducts typically undergo regression during embryonic life, under the influence of testis-derived Anti-Müllerian Hormone, AMH. In females, a lack of AMH during embryogenesis allows the ducts to differentiate into the female reproductive tract. In the chicken embryo, a long-standing model for development and sexual differentiation, Müllerian duct development in females in asymmetric. Only the left duct forms an oviduct, coincident with ovary formation only on the left side of the body. The right duct, together with the right gonad, becomes vestigial. The mechanism of this avian asymmetry has never been fully resolved, but is thought to involve local interplay between AMH and sex steroid hormones. This mini-review re-visits the topic, highlighting questions in the field and proposing a testable model for asymmetric duct development. We argue that current molecular and imaging techniques will shed new light on this curious asymmetry. Information on asymmetric duct development in the chicken model will inform our understanding of sexual differentiation in vertebrates more broadly.
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Affiliation(s)
| | | | - Craig A. Smith
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
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Patel RH, Truong VB, Sabry R, Acosta JE, McCahill K, Favetta LA. SMAD signaling pathway is disrupted by BPA via the AMH receptor in bovine granulosa cells†. Biol Reprod 2023; 109:994-1008. [PMID: 37724935 DOI: 10.1093/biolre/ioad125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/18/2023] [Accepted: 09/13/2023] [Indexed: 09/21/2023] Open
Abstract
Significant events that determine oocyte competence occur during follicular growth and oocyte maturation. The anti-Mullerian hormone, a positive predictor of fertility, has been shown to be affected by exposure to endocrine disrupting compounds, such as bisphenol A and S. However, the interaction between bisphenols and SMAD proteins, mediators of the anti-Mullerian hormone pathway, has not yet been elucidated. AMH receptor (AMHRII) and downstream SMAD expression was investigated in bovine granulosa cells treated with bisphenol A, bisphenol S, and then competitively with the anti-Mullerian hormone. Here, we show that 24-h bisphenol A exposure in granulosa cells significantly increased SMAD1, SMAD4, and SMAD5 mRNA expression. No significant changes were observed in AMHRII or SMADs protein expression after 24-h treatment. Following 12-h treatments with bisphenol A (alone or with the anti-Mullerian hormone), a significant increase in SMAD1 and SMAD4 mRNA expression was observed, while a significant decrease in SMAD1 and phosphorylated SMAD1 was detected at the protein level. To establish a functional link between bisphenols and the anti-Mullerian hormone signaling pathway, antisense oligonucleotides were utilized to suppress AMHRII expression with or without bisphenol exposure. Initially, transfection conditions were optimized and validated with a 70% knockdown achieved. Our findings show that bisphenol S exerts its effects independently of the anti-Mullerian hormone receptor, while bisphenol A may act directly through the anti-Mullerian hormone signaling pathway providing a potential mechanism by which bisphenols may exert their actions to disrupt follicular development and decrease oocyte competence.
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Affiliation(s)
- Rushi H Patel
- Reproductive Health and Biotechnology Lab, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Vivien B Truong
- Reproductive Health and Biotechnology Lab, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Reem Sabry
- Reproductive Health and Biotechnology Lab, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Julianna E Acosta
- Reproductive Health and Biotechnology Lab, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Kiera McCahill
- Reproductive Health and Biotechnology Lab, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Laura A Favetta
- Reproductive Health and Biotechnology Lab, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Liuzzi F, Taggi M, De Carlini S, La Marca A. Anti-Müllerian Hormone promotes human osteoblast differentiation and calcification by modulating osteogenic gene expression. Gynecol Endocrinol 2023; 39:2276163. [PMID: 37913790 DOI: 10.1080/09513590.2023.2276163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
OBJECTIVE To investigate whether the Anti-Müllerian Hormone (AMH), an ovarian hormone belonging to the Transforming Growth Factor β superfamily, may represent a possible candidate for use as a bone anabolic factor. METHODS We performed in vitro studies on Human Osteoblasts (HOb) to evaluate the expression and the functionality of AMHRII, the AMH receptor type-2, and investigate the effects of exogenous AMH exposure on osteogenic gene expression and osteoblast functions. RESULTS We reported the first evidence for the expression and functionality of AMHRII in HOb cells, thus suggesting that osteoblasts may represent a specific target for exogenous AMH treatment. Furthermore, the exposure to AMH exerted a stimulatory effect on HOb cells leading to the activation of osteogenic genes, including the upregulation of osteoblastic transcription factors such as RUNX and OSX, along with increased deposition of mineralized nodules. CONCLUSION Our findings proved interesting clues on the stimulatory effects of AMH on mature osteoblasts expressing its specific receptor, AMHRII. This study may therefore have translation value in opening the perspective that AMH may be an effective candidate to counteract the bone loss in osteoporotic patients by selectively targeting osteoblast with minimal off-target effect.
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Affiliation(s)
- Francesca Liuzzi
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Marilena Taggi
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Serena De Carlini
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Antonio La Marca
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
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