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https://www.readbyqxmd.com/read/29468986/increased-endothelial-dysfunction-and-insulin-resistance-in-patients-with-klinefelter-syndrome
#1
Cem Haymana, Aydogan Aydogdu, Ibrahim Demirci, Mustafa Dinc, Orhan Demir, Deniz Torun, Fatih Yesildal, Coskun Meric, Yalcın Basaran, Alper Sonmez, Omer Azal
Patients with Klinefelter Syndrome (KS) have increased cardiometabolic risk however the pathogenesis is not clear. We investigated the presence of endothelial dysfunction, insulin resistance and inflammation in an unconfounded population of KS. A total of 32 patients with KS (mean age 21.59 ± 1.66 years) and 33 healthy control subjects (mean age: 22.15 ± 1.03 years) were enrolled. The demographic parameters, Asymmetric dimethylarginine (ADMA), homeostatic model assessment of insulin resistance (HOMA-IR) index and high-sensitivity C-reactive protein (hs-CRP) levels were measured...
February 19, 2018: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29466784/clinical-hormonal-and-genetic-evaluation-of-idiopathic-nonobstructive-azoospermia-and-klinefelter-syndrome-patients
#2
Shin Y Kim, Bom Y Lee, Ah R Oh, So Y Park, Hyo S Lee, Ju T Seo
To investigate the clinical, hormonal, and genetic factors in infertile men with idiopathic nonobstructive azoospermia (NOA) or azoospermic Klinefelter syndrome (KFS), a total of 556 and 96 patients, respectively, were included in this study. All patient samples were analyzed cytogenetically. Serum reproductive hormone levels were measured. Microdeletions in the azoospermia factor (AZF) region of the Y chromosome were detected by multiplex PCR using 16 specific sequence-tagged sites. FSH and LH levels in both NOA and KFS patients were significantly higher than the normal range, and the testosterone level in KFS patients was significantly lower...
February 22, 2018: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/29466239/evaluation-of-basal-sex-hormone-levels-for-activation-of-the-hypothalamic-pituitary-gonadal-axis
#3
Yu Ding, Juan Li, Yongguo Yu, Peirong Yang, Huaiyuan Li, Yongnian Shen, Xiaodong Huang, Shijian Liu
BACKGROUND: This study aimed to identify the predictive value of basal sex hormone levels for activation of the hypothalamic-pituitary-gonadal (HPG) axis in girls. METHODS: Gonadotropin-releasing hormone (GnRH) stimulation tests were performed and evaluated in a total of 1750 girls with development of secondary sex characteristics. Correlation analyses were conducted between basal sex hormones and peak luteinizing hormone (LH) levels ≥5 IU/L during the GnRH stimulation test...
February 21, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29463151/the-role-of-fto-variants-in-the-susceptibility-of-polycystic-ovary-syndrome-and-in-vitro-fertilization-outcomes-in-chinese-women
#4
Ai Ling Liu, Hong Qing Liao, Jing Zhou, Yu Lin Nie, Cui Lan Zhou, Zhi Liang Li, Zi Fen Guo, Dong Xiu He, Yun Hua Zhu, Cui Ying Peng
We investigated the association between single nucleotide polymorphisms (SNPs) in the fat mass and obesity associated (FTO) gene (rs9926289 A/G, rs79206939 A/G, rs9930506 A/G, rs8050136 A/C, and rs1588413 C/T) and polycystic ovary syndrome (PCOS), as well as outcomes of in vitro fertilization (IVF). A case-control study consisting of 147 PCOS patients and 120 healthy controls was conducted. FTO SNPs were genotyped by PCR to determine allelic frequencies, and IVF outcomes were analyzed. The results showed that FTO rs8050136 (p = ...
February 20, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29462369/cyp17-gene-plays-a-key-role-in-goose-genital-growth-by-influencing-the-testosterone-level-at-puberty
#5
W Sun, X Gan, J Hu, L Li, J Wang
All birds reproduce by internal fertilization, but only 3% of birds have external genitalia. Hormone secretions and body size influence genital growth, but the actual regulatory mechanism is rarely reported. Thus, using 35 geese as experimental material, the regulatory mechanism of goose external genitalia growth was explored by measuring body size parameters, serum hormone concentrations, and related gene expression. In this study, genital growth was different among tested geese, but histological and morphological results showed that all geese external genitalia contained complete tissues...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29462242/gonadotropins-and-their-receptors-co-evolution-genetic-variants-receptor-imaging-and-functional-antagonists
#6
Aaron J Hsueh, Jiahuan He
Gonadotropins belong to the family of dimeric glycoprotein hormones and regulate gonadal physiology mediated by G protein-coupled, seven-transmembrane receptors. These glycoprotein hormones are widely used in the clinic to promote ovarian follicle development and for treating some cases of male infertility. We traced the co-evolution of dimeric gonadotropin hormones and their receptors, together with thyrotropin and its receptor. We updated recent findings on human genetic variants of these genes and their association with dizygotic twining, polycystic ovarian syndrome, primary ovarian insufficiency, male-limited precocious puberty and infertility...
February 15, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29461120/follicle-stimulating-hormone-peptide-conjugated-nanoparticles-for-targeted-shrna-delivery-lead-to-effective-gro-%C3%AE-silencing-and-antitumor-activity-against-ovarian-cancer
#7
Shan-Shan Hong, Ming-Xing Zhang, Meng Zhang, Yi Yu, Jun Chen, Xiao-Yan Zhang, Cong-Jian Xu
The distinct hormone molecules and receptors, such as follicle-stimulating hormone receptor (FSHR) in ovarian cancer, provide opportunities for more precisely targeted therapy. We previously developed FSHR-mediated nanoparticles and found that FSH peptides on the surface of nanoparticles improved the delivery of short interfering RNA (siRNA) into ovarian cancer cells. However, the high toxicity of the nanoparticles and the transient silencing of the siRNA in vivo limited further study. Here, we developed FSH peptide-conjugated nanoparticles with an increased amount of polyethylene glycol (PEG) grafting and encapsulated short hairpin RNA (shRNA) to silence the target gene, growth-regulated oncogene α (gro-α)...
February 20, 2018: Drug Delivery
https://www.readbyqxmd.com/read/29460304/sperm-retrieval-by-microdissection-testicular-sperm-extraction-and-intracytoplasmic-sperm-injection-outcomes-in-nonobstructive-azoospermic-patients-with-klinefelter-syndrome
#8
C Ozer, P Caglar Aytac, M R Goren, S Toksoz, U Gul, T Turunc
Klinefelter syndrome is the most frequent chromosomal abnormality in patients with nonobstructive azoospermia. The development of advanced assisted reproductive techniques, such as testicular sperm extraction and intracytoplasmic sperm injection, has provided the possibility of biological fathering in nonobstructive azoospermic patients with Klinefelter syndrome. We aimed to evaluate our sperm retrieval rate by microdissection testicular sperm extraction and to analyse the intracytoplasmic sperm injection outcomes in these patients...
February 20, 2018: Andrologia
https://www.readbyqxmd.com/read/29458401/efficacy-and-safety-of-ding-kun-dan-for-female-infertility-patients-with-predicted-poor-ovarian-response-undergoing-in-vitro-fertilization-intracytoplasmic-sperm-injection-study-protocol-for-a-randomized-controlled-trial
#9
Saihua Ma, Ruihong Ma, Tian Xia, Masoud Afnan, Xueru Song, Fengqin Xu, Guimin Hao, Fangfang Zhu, Jingpei Han, Zhimei Zhao
BACKGROUND: Women undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) who have a predicted poor ovarian response (POR) present a challenge for reproductive medicine specialists. Traditional Chinese medicine (TCM) is commonly used in China for such patients, in the belief that it will improve the ovarian response and ultimately increase pregnancy rates. However, there is a lack of high-quality evidence about the effect of TCM on improving ovarian response in such patients...
February 20, 2018: Trials
https://www.readbyqxmd.com/read/29449081/urinary-concentrations-of-benzophenone-type-ultra-violet-light-filters-and-reproductive-parameters-in-young-men
#10
Evdochia Adoamnei, Jaime Mendiola, Miriam Moñino-García, Fernando Vela-Soria, Luz M Iribarne-Durán, Mariana F Fernández, Nicolás Olea, Niels Jørgensen, Shanna H Swan, Alberto M Torres-Cantero
BACKGROUND: Benzophenone (BP)-type ultraviolet (UV) light filters are chemicals frequently added to personal care products, insect repellents, sunscreens, and beverage and food packaging to diminish the harmful effects of UV sunlight on human skin or foodstuffs. BP-type UV filters have shown negative effects on male reproduction function in in vitro and animal models, but human epidemiologic studies are limited. The goal of this study was to examine associations between urinary concentrations of BP-type UV filters and semen quality and reproductive hormone levels...
February 9, 2018: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29448973/camp-response-element-binding-protein-1-controls-porcine-ovarian-cell-proliferation-apoptosis-and-fsh-and-insulin-like-growth-factor-1-response
#11
A V Sirotkin, A Benčo, A Tandlmajerová, M Lauková, D Vašíček, J Laurinčik, J Kornhauser, S Alwasel, A H Harrath
The aim of the present study was to examine the role of cAMP response element-binding protein (CREB) and its phosphorylation in the regulation of ovarian cell proliferation and apoptosis, and of the response of proliferation and apoptosis to the upstream hormonal stimulators FSH and insulin-like growth factor (IGF) 1. In the first series of experiments, porcine ovarian granulosa cells, transfected or not with a gene construct encoding wild-type CREB1 (CREB1WT), were cultured with and without FSH (0, 1, 10 or 100ngmL-1)...
February 16, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29447491/association-between-th1-th2-immune-imbalance-and-obesity-in-women-with-or-without-polycystic-ovary-syndrome
#12
Ping Gong, Bingwei Shi, Juan Wang, Peixia Cao, Zhenyu Diao, Yuji Wang, Yali Hu, Shuping Li
OBJECTIVES: This study aimed to investigate the Th1/Th2 cells in peripheral blood of PCOS patients, and assess the potential correlation between Th1/Th2 imbalance and obesity. METHODS: Thirty-nine PCOS patients and 23 age-matched controls were enrolled. The PBMCs were obtained before pharmacological intervention in women with or without PCOS. The profiles of Th1 (IFN-γ) and Th2 (IL-4) cytokines of CD3 + CD - T lymphocyte subsets were analyzed by flow cytometry...
February 15, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29446828/novel-insights-on-testicular-volume-and-testosterone-replacement-therapy-in-klinefelter-patients-undergoing-testicular-sperm-extraction-a-retrospective-clinical-study
#13
Andrea Garolla, Riccardo Selice, Massimo Menegazzo, Umberto Valente, Filiberto Zattoni, Massimo Iafrate, Tommaso Prayer-Galetti, Marina Gardiman Paola, Alberto Ferlin, Andrea Di Nisio, Carlo Foresta
STUDY QUESTION: To investigate whether sperm recovery is related to clinical features, hormone parameters and testosterone replacement therapy (TRT) in patients with Klinefelter syndrome (KS). SUMMARY ANSWER: This study provides three interesting insights: i) the probability to retrieve sperm is not related to testicular volume; ii) TRT does not affect sperm retrieval rate (SRR); iii) reduced levels of LH and FSH represent a negative predictor of sperm retrieval in patients with TRT...
February 15, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29444704/hpmsc-transplantation-restoring-ovarian-function-in-premature-ovarian-failure-mice-is-associated-with-change-of-th17-tc17-and-th17-treg-cell-ratios-through-the-pi3k-akt-signal-pathway
#14
Na Yin, Yanlin Wang, Xueyan Lu, Ranran Liu, Lianshuang Zhang, Wei Zhao, Wendan Yuan, Qianqian Luo, Hao Wu, Xiying Luan, Hongqin Zhang
BACKGROUND: Human placenta-derived mesenchymal stem cell (hPMSC) transplantation has been demonstrated to be an effective way of recovering ovarian function in mice with autoimmune induced premature ovarian failure (POF). But the exact mechanism remains unclear. The goal of the present study is to investigate the role of immune factors (T-helper 17 (Th17), cytotoxic T (Tc17) and regulatory T (Treg) cells) in the recovery of ovarian function and whether the phosphatidylinositol 3-kinase (PI3K)/Akt signal pathway is involved in the regulation...
February 14, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29444570/pyrethroid-pesticide-exposure-and-risk-of-primary-ovarian-insufficiency-in-chinese-women
#15
Chunming Li, Miaofeng Cao, Linjuan Ma, Xiaoqing Ye, Yang Song, Wuye Pan, Zhengfen Xu, Xiaochen Ma, Yibing Lan, Peiqiong Chen, Weiping Liu, Jing Liu, Jianhong Zhou
Pyrethroids are a class of widely used insecticides. Female animal studies suggested that pyrethroid exposure impaired ovarian function, which resulted in similar symptoms of primary ovarian insufficiency (POI). However, it is still unknown whether this association applies to women. In this case-control study, a total of 172 POI patients and 247 control women were recruited in Zhejiang, China. The urinary concentrations of metabolites of pyrethroids, 3-phenoxybenzoic acid (3-PBA) and 4-fluoro-3-phenoxybenzoic acid (4-F-3-PBA), as well as the serum concentrations of follicle-stimulating hormone (FSH), luteinizing hormone (LH) and anti-Mullerian hormone (AMH) were determined...
February 15, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29442133/follicle-stimulating-hormone-enhances-hepatic-gluconeogenesis-by-grk2-mediated-ampk-hyperphosphorylation-at-ser485-in-mice
#16
Xiaoyi Qi, Yanjing Guo, Yongfeng Song, Chunxiao Yu, Lifang Zhao, Li Fang, Dehuan Kong, Jiajun Zhao, Ling Gao
AIMS/HYPOTHESIS: Increased serum follicle-stimulating hormone (FSH) is correlated with fasting hyperglycaemia. However, the underlying mechanism remains unclear. Because excessive hepatic gluconeogenesis is a major cause of fasting hyperglycaemia the present study investigated whether FSH increases hepatic gluconeogenesis in mice. METHODS: Ovariectomised mice supplemented with oestradiol (E2) to maintain normal levels of serum E2 (OVX+E2 mice) were injected with low or high doses of FSH...
February 13, 2018: Diabetologia
https://www.readbyqxmd.com/read/29440419/epitope-specific-monoclonal-antibodies-to-fsh%C3%AE-increase-bone-mass
#17
Yaoting Ji, Peng Liu, Tony Yuen, Shozeb Haider, Jiahuan He, Raquel Romero, Hao Chen, Madison Bloch, Se-Min Kim, Daria Lizneva, Lubna Munshi, Chunxue Zhou, Ping Lu, Jameel Iqbal, Zhen Cheng, Maria I New, Aaron J Hsueh, Zhuan Bian, Clifford J Rosen, Li Sun, Mone Zaidi
Pituitary hormones have long been thought solely to regulate single targets. Challenging this paradigm, we discovered that both anterior and posterior pituitary hormones, including FSH, had other functions in physiology. We have shown that FSH regulates skeletal integrity, and, more recently, find that FSH inhibition reduces body fat and induces thermogenic adipose tissue. A polyclonal antibody raised against a short, receptor-binding epitope of FSHβ was found not only to rescue bone loss postovariectomy, but also to display marked antiobesity and probeiging actions...
February 12, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29438534/both-in-vivo-fsh-depletion-and-follicular-exposure-to-gonadotrophin-releasing-hormone-analogues-in-vitro-are-not-effective-to-prevent-follicular-depletion-during-chemotherapy-in-mice
#18
F Horicks, G Van Den Steen, C Gervy, H J Clarke, I Demeestere
STUDY QUESTION: Does fertility preservation using gonadotrophin-releasing hormone (GnRH) analogues during chemotherapy act through a direct effect on the ovary or through inhibition of FSH secretion? SUMMARY ANSWER: The absence of FSH in vivo and the direct exposition of ovarian follicles to GnRH analogues in vitro did not prevent chemotherapy-induced ovarian damage. WHAT IS KNOWN ALREADY: The potential mechanisms of action of GnRH analogues in protecting ovaries against chemotherapy damage remain poorly understood...
February 9, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29438521/leydig-cell-dysfunction-is-associated-with-post-transcriptional-deregulation-of-cyp17a1-in-men-with-sertoli-cell-only-syndrome
#19
M C Lardone, F Argandoña, M Lorca, A Piottante, M Flórez, C Palma, M Ebensperger, A Castro
STUDY QUESTION: Is the expression of steroidogenic enzyme 17α-Hydroxylase/17,20-Lyase (CYP17A1) downregulated in Leydig cells (LCs) of men with spermatogenic failure and compensated impairment of LC function i.e. a low testosterone to LH (T/LH) ratio? SUMMARY ANSWER: Although the transcriptional expression of CYP17A1 is increased, its protein expression is decreased, in isolated LCs of men with spermatogenic failure and reduced serum T/LH. WHAT IS KNOWN ALREADY: Primary spermatogenic defects have been associated with functional and morphological abnormalities of LCs, characterized by decreased serum testosterone (T) levels, decreased T/LH, increased 17β-estradiol (E2) and E2/T ratio, and larger clusters of LCs (LC hyperplasia)...
February 9, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29438034/c1qtnf3-in-the-murine-ovary-and-its-function-in-folliculogenesis
#20
Zhoufei Mao, Liuhong Yang, Xiaosheng Lu, Anni Tan, Yuxia Wang, Fei Ding, Luanjuan Xiao, Xufeng Qi, Yanhong Yu
C1q/tumor necrosis factor-related protein 3 (C1QTNF3) is a novel adipokine with modulating effects on metabolism, inflammation, and the cardiovascular system. C1QTNF3 expression levels in the sera and omental adipose tissues of women with PCOS are low compared to control subjects. However, the expression and function of C1QTNF3 in the ovary has not previously been examined. Here, we assessed the expression patterns of C1qtnf3 in the ovary and explored its role in folliculogenesis. The C1qtnf3 transcript abundance was higher in large follicles than in small follicles and was under the influence of gonadotropin...
February 1, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
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