1
|
Liu H, Mo L, Tian X, Fan S, Hu J, Zhang L, Yu B. Correlation between anti-müllerian hormone in polycystic ovarian syndrome with metformin: a systematic review and meta-analysis. Gynecol Endocrinol 2024; 40:2330655. [PMID: 38613449 DOI: 10.1080/09513590.2024.2330655] [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: 10/27/2023] [Accepted: 03/05/2024] [Indexed: 04/15/2024] Open
Abstract
OBJECTIVE This study aims to examine the short-term effects of oral metformin (MET) on serum anti-müllerian hormone (AMH) levels and to verify its impact on AMH concentrations in women with polycystic ovary syndrome (PCOS). METHODS The literature search, extending from January 2000 to April 2023, was conducted using databases such as PubMed, Embase, and the Cochrane Central, resulting in the inclusion of 20 studies. These selected studies, evaluated for quality using the Newcastle-Ottawa Scale, investigated changes in AMH levels before and after treatment, with durations ranging from less than three months to over six months. The reported outcomes were quantified as standardized mean differences (SMD) with 95% confidence intervals (CI). This comprehensive systematic review and meta-analysis was registered with the International Prospective Register of Systematic Reviews (PROSPERO) under the registration number CRD42023420705. The statistical analyses were performed using Review Manager 5.4.1. RESULTS ① The study incorporated 20 articles, consisting of 12 prospective studies, 7 randomized controlled trials (RCT), and 1 cross-sectional study. ② Serum AMH levels in patients with PCOS diminish subsequent to the oral administration of MET. ③ Across the spectrum of studies analyzed, a pronounced degree of heterogeneity is evident, potentially ascribed to differential parameters including body mass index (BMI), daily pharmacological dosages, the temporal extent of treatment regimens, criteria of PCOS, and detection Methods. ④ The impact of MET on AMH levels exhibits a dose-responsive trend, with escalating doses of MET being associated with progressively greater declines in AMH concentrations in the patient population. ⑤ For women with PCOS receiving MET therapy, a minimum treatment duration of three months may be necessary to observe a reduction in serum AMH levels. CONCLUSIONS The results of this meta-analysis indicate that MET treatment exerts a suppressive effect on serum AMH levels in women with PCOS. It appears that a treatment duration of at least three months is required to achieve a significant decrease in AMH concentrations. Furthermore, the influence of MET on AMH is dose-dependent, with higher doses correlating with more pronounced reductions in AMH levels among the patients studied.
Collapse
Affiliation(s)
- Hongcen Liu
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen City, Guangdong Province, China
| | - Li Mo
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen City, Guangdong Province, China
| | - Xiaofang Tian
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen City, Guangdong Province, China
| | - Shizhen Fan
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen City, Guangdong Province, China
| | - Jiayi Hu
- The school of Guangzhou University of Chinese Medicine, Guangzhou City, Guangdong Province, China
| | - Lin Zhang
- The school of Guangzhou University of Chinese Medicine, Guangzhou City, Guangdong Province, China
| | - Bohai Yu
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen City, Guangdong Province, China
| |
Collapse
|
2
|
Li JW, Chen YZ, Zhang Y, Zeng LH, Li KW, Xie BZ, Luo SP, Gao J. Gut microbiota and risk of polycystic ovary syndrome: Insights from Mendelian randomization. Heliyon 2023; 9:e22155. [PMID: 38125500 PMCID: PMC10730437 DOI: 10.1016/j.heliyon.2023.e22155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 12/23/2023] Open
Abstract
Background Polycystic ovary syndrome (PCOS) is a multifaceted endocrine and metabolic syndrome with complex origins and pathogenesis that has not yet been fully elucidated. Recently, the interconnection between gut microbiota and metabolic diseases has gained prominence in research, generating new insights into the correlation between PCOS and gut microbiota composition. However, the causal link between PCOS and gut microbiota remains relatively unexplored, indicating a crucial gap in current research. Methods We conducted a two-sample Mendelian randomization analysis using summary statistics obtained from the MiBioGen Consortium's extensive genome-wide association studies (GWAS) meta-analysis, focusing on the gut microbiota. Summary statistics for PCOS were acquired from the FinnGen Consortium R7 release data. Various statistical approaches, including inverse variance weighted, MR-Egger, maximum likelihood, weighted model, and weighted median, have been employed to investigate the causal association between the gut microbiota and PCOS. Additionally, we performed a reverse causal analysis. Cochran's Q statistic was used to assess the heterogeneity of the instrumental variables. Regarding the relationships between PCOS and specific genera within the gut microbiota, a significance level of P < 0.05 was observed, but only when q ≥ 0.1. Results Our analysis revealed that specific microbial genera, namely Bilophila (P = 4.62 × 10-3), Blautia (P = 0.02), and Holdemania (P = 0.04), displayed a protective effect against PCOS. Conversely, the presence of the Lachnospiraceae family of bacteria was associated with a detrimental effect on PCOS (P = 0.04). Furthermore, reverse Mendelian randomization analysis confirmed the significant influence of Lachnospiraceae on PCOS. No significant variations in instrumental variables or evidence of horizontal pleiotropy were observed. Conclusions The results revealed a definitive causal link between PCOS and the presence of Bilophila, Blautia, Holdemania, and Lachnospiraceae in the gut microbiota. This discovery could provide pivotal insights, leading to novel preventive and therapeutic approaches for PCOS.
Collapse
Affiliation(s)
- Jing-wei Li
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, # No.12 Ji Chang Road, 510405, Guangzhou City, Guangdong Province, China
| | - Yu-zhi Chen
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, # No.12 Ji Chang Road, 510405, Guangzhou City, Guangdong Province, China
| | - Yu Zhang
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, # No.12 Ji Chang Road, 510405, Guangzhou City, Guangdong Province, China
| | - Li-hua Zeng
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, # No.12 Ji Chang Road, 510405, Guangzhou City, Guangdong Province, China
| | - Kai-wei Li
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, # No.12 Ji Chang Road, 510405, Guangzhou City, Guangdong Province, China
| | - Bao-zhen Xie
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, # No.12 Ji Chang Road, 510405, Guangzhou City, Guangdong Province, China
| | - Song-ping Luo
- The First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, 510405 Guangzhou City, Guangdong Province, China
| | - Jie Gao
- The First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, 510405 Guangzhou City, Guangdong Province, China
| |
Collapse
|
3
|
Lee DH, Park H, You JH, Seok J, Kwon DW, Kim YR, Kim GJ. Increased IGFBP2 Levels by Placenta-Derived Mesenchymal Stem Cells Enhance Glucose Metabolism in a TAA-Injured Rat Model via AMPK Signaling Pathway. Int J Mol Sci 2023; 24:16531. [PMID: 38003735 PMCID: PMC10671765 DOI: 10.3390/ijms242216531] [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: 10/19/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023] Open
Abstract
The insulin resistance caused by impaired glucose metabolism induces ovarian dysfunction due to the central importance of glucose as a source of energy. However, the research on glucose metabolism in the ovaries is still lacking. The objectives of this study were to analyze the effect of PD-MSCs on glucose metabolism through IGFBP2-AMPK signaling and to investigate the correlation between glucose metabolism and ovarian function. Thioacetamide (TAA) was used to construct a rat injury model. PD-MSCs were transplanted into the tail vein (2 × 106) 8 weeks after the experiment started. The expression of the IGFBP2 gene and glucose metabolism factors (e.g., AMPK, GLUT4) was significantly increased in the PD-MSC group compared to the nontransplantation (NTx) group (* p < 0.05). The levels of follicular development markers and the sex hormones AMH, FSH, and E2 were also higher than those in the TAA group. Using ex vivo cocultivation, the mRNA and protein expression of IGFBP2, AMPK, and GLUT4 were significantly increased in the cocultivation with the PD-MSCs group and the recombinant protein-treated group (* p < 0.05). These findings suggest that the increased IGFBP2 levels by PD-MSCs play an important role in glucose metabolism and ovarian function through the IGFBP2-AMPK signaling pathway.
Collapse
Affiliation(s)
- Dae-Hyun Lee
- Department of Bioinspired Science, CHA University, Seongnam-si 13488, Republic of Korea; (D.-H.L.); (H.P.); (J.-H.Y.); (D.-W.K.)
- PLABiologics Co., Ltd., Seongnam-si 13522, Republic of Korea
| | - Hyeri Park
- Department of Bioinspired Science, CHA University, Seongnam-si 13488, Republic of Korea; (D.-H.L.); (H.P.); (J.-H.Y.); (D.-W.K.)
| | - Jun-Hyeong You
- Department of Bioinspired Science, CHA University, Seongnam-si 13488, Republic of Korea; (D.-H.L.); (H.P.); (J.-H.Y.); (D.-W.K.)
| | - Jin Seok
- Department of Obstetrics and Gynecology, University of Chicago, 5841A. Maryland Ave., Chicago, IL 60637, USA
| | - Dong-Wook Kwon
- Department of Bioinspired Science, CHA University, Seongnam-si 13488, Republic of Korea; (D.-H.L.); (H.P.); (J.-H.Y.); (D.-W.K.)
| | - Young-Ran Kim
- Department of Obstetics and Gynecology, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea;
| | - Gi-Jin Kim
- Department of Bioinspired Science, CHA University, Seongnam-si 13488, Republic of Korea; (D.-H.L.); (H.P.); (J.-H.Y.); (D.-W.K.)
- PLABiologics Co., Ltd., Seongnam-si 13522, Republic of Korea
| |
Collapse
|
4
|
Zhang CH, Liu XY, Wang J. Essential Role of Granulosa Cell Glucose and Lipid Metabolism on Oocytes and the Potential Metabolic Imbalance in Polycystic Ovary Syndrome. Int J Mol Sci 2023; 24:16247. [PMID: 38003436 PMCID: PMC10671516 DOI: 10.3390/ijms242216247] [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: 10/09/2023] [Revised: 11/06/2023] [Accepted: 11/11/2023] [Indexed: 11/26/2023] Open
Abstract
Granulosa cells are crucial for the establishment and maintenance of bidirectional communication among oocytes. Various intercellular material exchange modes, including paracrine and gap junction, are used between them to achieve the efficient delivery of granulosa cell structural components, energy substrates, and signaling molecules to oocytes. Glucose metabolism and lipid metabolism are two basic energy metabolism pathways in granulosa cells; these are involved in the normal development of oocytes. Pyruvate, produced by granulosa cell glycolysis, is an important energy substrate for oocyte development. Granulosa cells regulate changes in intrafollicular hormone levels through the processing of steroid hormones to control the development process of oocytes. This article reviews the material exchange between oocytes and granulosa cells and expounds the significance of granulosa cells in the development of oocytes through both glucose metabolism and lipid metabolism. In addition, we discuss the effects of glucose and lipid metabolism on oocytes under pathological conditions and explore its relationship to polycystic ovary syndrome (PCOS). A series of changes were found in the endogenous molecules and ncRNAs that are related to glucose and lipid metabolism in granulosa cells under PCOS conditions. These findings provide a new therapeutic target for patients with PCOS; additionally, there is potential for improving the fertility of patients with PCOS and the clinical outcomes of assisted reproduction.
Collapse
Affiliation(s)
- Chen-Hua Zhang
- Queen Mary School, Medical College, Nanchang University, Nanchang 330006, China; (C.-H.Z.); (X.-Y.L.)
| | - Xiang-Yi Liu
- Queen Mary School, Medical College, Nanchang University, Nanchang 330006, China; (C.-H.Z.); (X.-Y.L.)
| | - Jing Wang
- Department of Cell Biology, School of Medicine, Nanchang University, Nanchang 330006, China
| |
Collapse
|
5
|
Wang K, Li Y. Signaling pathways and targeted therapeutic strategies for polycystic ovary syndrome. Front Endocrinol (Lausanne) 2023; 14:1191759. [PMID: 37929034 PMCID: PMC10622806 DOI: 10.3389/fendo.2023.1191759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 09/18/2023] [Indexed: 11/07/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women of reproductive age. Although promising strides have been made in the field of PCOS over the past decades, the distinct etiologies of this syndrome are not fully elucidated. Prenatal factors, genetic variation, epigenetic mechanisms, unhealthy lifestyles, and environmental toxins all contribute to the development of this intricate and highly heterogeneous metabolic, endocrine, reproductive, and psychological disorder. Moreover, interactions between androgen excess, insulin resistance, disruption to the hypothalamic-pituitary-ovary (HPO) axis, and obesity only make for a more complex picture. In this review, we investigate and summarize the related molecular mechanisms underlying PCOS pathogenesis from the perspective of the level of signaling pathways, including PI3K/Akt, TGF-β/Smads, Wnt/β-catenin, and Hippo/YAP. Additionally, this review provides an overview of prospective therapies, such as exosome therapy, gene therapy, and drugs based on traditional Chinese medicine (TCM) and natural compounds. By targeting these aberrant pathways, these interventions primarily alleviate inflammation, insulin resistance, androgen excess, and ovarian fibrosis, which are typical symptoms of PCOS. Overall, we hope that this paper will pave the way for better understanding and management of PCOS in the future.
Collapse
Affiliation(s)
- Kexin Wang
- The Second School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yanhua Li
- Department of General Practice, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| |
Collapse
|
6
|
Rashid R, Tripathi R, Singh A, Sarkar S, Kawale A, Bader GN, Gupta S, Gupta RK, Jha RK. Naringenin improves ovarian health by reducing the serum androgen and eliminating follicular cysts in letrozole-induced polycystic ovary syndrome in the Sprague Dawley rats. Phytother Res 2023; 37:4018-4041. [PMID: 37165686 DOI: 10.1002/ptr.7860] [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: 06/08/2022] [Revised: 04/03/2023] [Accepted: 04/17/2023] [Indexed: 05/12/2023]
Abstract
Polycystic ovary syndrome (PCOS) is most common in women of reproductive age, giving rise to androgen excess and anovulation, leading to infertility and non-reproductive complications. We explored the ameliorating effect of naringenin in PCOS using the Sprague Dawley (SD) rat model and human granulosa cells. Letrozole-induced PCOS rats were given either naringenin (50 mg/kg/day) alone or in combination with metformin (300 mg/kg/day), followed by the estrous cycle, hormonal analysis, and glucose sensitivity test. To evaluate the effect of naringenin on granulosa cell (hGC) steroidogenesis, we treated cells with naringenin (2.5 μM) alone or in combination with metformin (1 mM) in the presence of forskolin (10 μM). To determine the steroidogenesis of CYP-17A1, -19A1, and 3βHSD2, the protein expression levels were examined. Treatment with naringenin in the PCOS animal groups increased ovulation potential and decreased cystic follicles and levels of androgens. The expression levels of CYP-17A1, -19A1, and 3βHSD2, were seen restored in the ovary of PCOS SD rats' model and in the human ovarian cells in response to the naringenin. We found an increased expression level of phosphorylated-AKT in the ovary and hGCs by naringenin. Naringenin improves ovulation and suppress androgens and cystic follicles, involving AKT activation.
Collapse
Affiliation(s)
- Rumaisa Rashid
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Department of Pharmaceutical Sciences, University of Kashmir, Jammu and Kashmir, India
| | - Rupal Tripathi
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Akanksha Singh
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Sudarsan Sarkar
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Ajaykumar Kawale
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - G N Bader
- Department of Pharmaceutical Sciences, University of Kashmir, Jammu and Kashmir, India
| | - Satish Gupta
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Rakesh Kumar Gupta
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Rajesh Kumar Jha
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| |
Collapse
|
7
|
Biswas S, Ghosh S, Maitra S. Role of insulin-like growth factor 1 (IGF1) in the regulation of mitochondrial bioenergetics in zebrafish oocytes: lessons from in vivo and in vitro investigations. Front Cell Dev Biol 2023; 11:1202693. [PMID: 37457295 PMCID: PMC10347385 DOI: 10.3389/fcell.2023.1202693] [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: 04/09/2023] [Accepted: 06/06/2023] [Indexed: 07/18/2023] Open
Abstract
Optimal mitochondrial functioning is indispensable for acquiring oocyte competence and meiotic maturation, whilst mitochondrial dysfunction may lead to diminished reproductive potential and impaired fertility. The role of the intra-ovarian IGF system in ovarian follicular dynamics has been implicated earlier. Although several studies have demonstrated the role of the IGF axis in facilitating mitochondrial function over a multitude of cell lines, its role in oocyte energy metabolism remains largely unexplored. Here using zebrafish, the relative importance of IGF1 in modulating oocyte mitochondrial bioenergetics has been investigated. A dramatic increase in ovarian lhcgr and igf1 expression accompanied heightened ATP levels and mitochondrial polarization in full-grown (FG) oocytes resuming meiotic maturation and ovulation in vivo. Concomitant with elevated igf1 expression and IGF1R phosphorylation, hCG (LH analog) stimulation of FG follicles in vitro prompted a sharp increase in NRF-1 and ATP levels, suggesting a positive influence of gonadotropin action on igf1 expression vis-à-vis oocyte bioenergetics. While recombinant IGF1 administration enhanced mitochondrial function, IGF1R immunodepletion or priming with PI3K inhibitor wortmannin could abrogate NRF-1 immunoreactivity, expression of respiratory chain subunits, ΔΨM, and ATP content. Mechanistically, activation of PI3K/Akt signaling in IGF1-treated follicles corroborated well with the rapid phosphorylation of GSK3β at Ser9 (inactive) followed by PGC-1β accumulation. While selective inhibition of GSK3β promoted PGC-1β, Akt inhibition could abrogate IGF1-induced p-GSK3β (Ser9) and PGC-1β immunoreactive protein indicating Akt-mediated GSK3β inactivation and PGC-1β stabilization. The IGF1-depleted follicles showed elevated superoxide anions, subdued steroidogenic potential, and attenuated G2-M1 transition. In summary, this study highlights the importance of IGF1 signaling in oocyte bioenergetics prior to resumption of meiosis.
Collapse
|
8
|
Sun Y, Gao S, Ye C, Zhao W. Gut microbiota dysbiosis in polycystic ovary syndrome: Mechanisms of progression and clinical applications. Front Cell Infect Microbiol 2023; 13:1142041. [PMID: 36909735 PMCID: PMC9998696 DOI: 10.3389/fcimb.2023.1142041] [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: 01/11/2023] [Accepted: 02/06/2023] [Indexed: 02/26/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrine diseases in women of childbearing age that leads to menstrual disorders and infertility. The pathogenesis of PCOS is complex and has not yet been fully clarified. Gut microbiota is associated with disorders of lipid, glucose, and steroid hormone metabolish. A large body of studies demonstrated that gut microbiota could regulate the synthesis and secretion of insulin, and affect androgen metabolism and follicle development, providing us a novel idea for unravelling the pathogenesis of PCOS. The relationship between gut microbiota and the pathogenesis of PCOS is particularly important. This study reviewed recent research advances in the roles of gut microbiota in the occurrence and development of PCOS. It is expected to provide a new direction for the treatment of PCOS based on gut microbiota.
Collapse
Affiliation(s)
- Yan Sun
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Shouyang Gao
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Cong Ye
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Weiliang Zhao
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
- *Correspondence: Weiliang Zhao,
| |
Collapse
|
9
|
Giulivi C, Wang JY, Hagerman RJ. Artificial neural network applied to fragile X-associated tremor/ataxia syndrome stage diagnosis based on peripheral mitochondrial bioenergetics and brain imaging outcomes. Sci Rep 2022; 12:21382. [PMID: 36496525 PMCID: PMC9741636 DOI: 10.1038/s41598-022-25615-2] [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: 05/04/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022] Open
Abstract
No proven prognosis is available for the neurodegenerative disorder fragile X-associated tremor/ataxia syndrome (FXTAS). Artificial neural network analyses (ANN) were used to predict FXTAS progression using data from 127 adults (noncarriers and FMR1 premutation carriers with and without FXTAS) with five outcomes from brain MRI imaging and 22 peripheral bioenergetic outcomes from two cell types. Diagnosis accuracy by ANN predictions ranged from 41.7 to 86.3% (depending on the algorithm used), and those misclassified usually presented a higher FXTAS stage. ANN prediction of FXTAS stages was based on a combination of two imaging findings (white matter hyperintensity and whole-brain volumes adjusted for intracranial volume) and four bioenergetic outcomes. Those at Stage 3 vs. 0-2 showed lower mitochondrial mass, higher oxidative stress, and an altered electron transfer consistent with mitochondrial unfolded protein response activation. Those at Stages 4-5 vs. 3 had higher oxidative stress and glycerol-3-phosphate-linked ATP production, suggesting that targeting mGPDH activity may prevent a worse prognosis. This was confirmed by the bioenergetic improvement of inhibiting mGPDH with metformin in affected fibroblasts. ANN supports the prospect of an unbiased molecular definition in diagnosing FXTAS stages while identifying potential targets for personalized medicine.
Collapse
Affiliation(s)
- Cecilia Giulivi
- grid.27860.3b0000 0004 1936 9684Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA USA ,grid.413079.80000 0000 9752 8549MIND Institute, University of California at Davis Medical Center, Sacramento, CA USA
| | - Jun Yi Wang
- grid.413079.80000 0000 9752 8549MIND Institute, University of California at Davis Medical Center, Sacramento, CA USA ,grid.27860.3b0000 0004 1936 9684Center for Mind and Brain, University of California Davis, Davis, CA USA
| | - Randi J. Hagerman
- grid.413079.80000 0000 9752 8549MIND Institute, University of California at Davis Medical Center, Sacramento, CA USA ,grid.413079.80000 0000 9752 8549Department of Pediatrics, University of California at Davis Medical Center, Sacramento, CA USA
| |
Collapse
|
10
|
Sonntag B. Einfluss der Trainingsintensität auf Marker des Syndroms polyzystischer Ovarien – eine randomisiert-kontrollierte Studie. GYNAKOLOGISCHE ENDOKRINOLOGIE 2022. [DOI: 10.1007/s10304-022-00454-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|