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https://www.readbyqxmd.com/read/28548451/molecular-and-functional-characterization-of-the-american-cockroach-periplaneta-americana-rab5-the-first-exopterygotan-low-molecular-weight-ovarian-gtpase-during-oogenesis
#1
Mohamed Elmogy, Amr A Mohamed, Muhammad Tufail, Tomohide Uno, Makio Takeda
The small Rab GTPases are key regulators of membrane vesicle trafficking. Ovaries of Periplaneta americana (Linnaeus) (Blattodea: Blattidae) have small molecular weight GTP/ATP-binding proteins during early and late vitellogenic periods of oogenesis. However, the identification and characterization of the detected proteins have not been yet reported. Herein, we cloned a cDNA encoding Rab5 from the American cockroach, P. americana, ovaries (PamRab5). It comprises 796 bp, encoding a protein of 213 amino acid residues with a predicted molecular weight of 23...
May 26, 2017: Insect Science
https://www.readbyqxmd.com/read/28547204/fsh-receptor-gene-p-thr307ala-and-p-asn680ser-polymorphisms-are-associated-with-the-risk-of-polycystic-ovary-syndrome
#2
Jin Ju Kim, Young Min Choi, Min A Hong, Soo Jin Chae, Kyuri Hwang, Sang Ho Yoon, Seung Yup Ku, Chang Suk Suh, Seok Hyun Kim
PURPOSE: The purpose of this study was to investigate whether the follicle-stimulating hormone receptor (FSHR) gene p. Thr307Ala (c.919A>G, rs6165) and p. Asn680Ser (c.2039A>G, rs6166) polymorphisms are associated with susceptibility to polycystic ovary syndrome (PCOS). METHODS: Genotyping was performed in 377 women with PCOS and 388 age-matched controls. Difference in the genotype distribution was assessed using a Fisher's exact or chi-square test, and continuous variables were compared using a Student's t test...
May 25, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28546817/clinical-and-biochemical-characteristics-in-pcos-women-with-menstrual-abnormalities
#3
Vasiliki Christodoulopoulou, Eftihios Trakakis, Vasilios Pergialiotis, Melpomeni Peppa, Charalampos Chrelias, Dimitrios Kassanos, Nikolaos Papantoniou
Objective: The purpose of the present study was to examine the impact of menstrual cycle abnormalities among patients with polycystic ovary syndrome (PCOS) on biochemical and anthropometric characteristics. Materials and methods: We conducted a prospective observational study of patients 17-35 years of age with PCOS that attended the department of Gynecological Endocrinology of our hospital. Results: A total of 309 women with PCOS participated in the study. In total, 72.2% suffered from menstrual cycle disorders...
December 2016: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/28546815/role-of-statin-drugs-for-polycystic-ovary-syndrome
#4
REVIEW
Lisa Cassidy-Vu, Edwina Joe, Julienne K Kirk
Objective: To review the potential role and specific impact of statin drugs in women with PCOS. The evidence for this use of statins in PCOS is limited and still under further investigation. Materials and methods: A search was conducted using PubMed, DynaMed and PubMedHealth databases through October 16, 2016 using the terms polycystic ovary syndrome, PCOS, hydroxymethylglutaryl-CoA reductase inhibitors, hydroxymethylglutaryl-CoA, statin, atorvastatin, fluvastatin, lovastatin, pitavastatin, pravastatin, rosuvastatin and simvastatin...
December 2016: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/28546787/pepsinogen-c-expression-regulation-and-its-relationship-with-cancer
#5
REVIEW
Shixuan Shen, Jingyi Jiang, Yuan Yuan
Pepsinogen C (PGC) belongs to the aspartic protease family and is secreted by gastric chief cells. PGC could be activated to pepsin C and digests polypeptides and amino acids, but as a zymogen PGC's functions is unclear. In normal physiological conditions, PGC is initially detected in the late embryonic stage and is mainly expressed in gastric mucosa. The in situ expression of PGC in gastric mucosa is decreased considerably in the process of superficial gastritis → atrophic gastritis → gastric cancer (GC), proving that PGC is a comparatively ideal negative marker of GC...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28546543/metabolic-profiling-of-polycystic-ovary-syndrome-reveals-interactions-with-abdominal-obesity
#6
Alexessander Couto Alves, Beatriz Valcarcel, Ville-Petteri Mäkinen, Laure Morin-Papunen, Sylvain Sebert, Antti J Kangas, Pasi Soininen, Shikta Das, Maria De Iorio, Lachlan Coin, Mika Ala-Korpela, Marjo-Riitta Järvelin, Stephen Franks
BACKGROUND: Polycystic ovary syndrome (PCOS) is a common reproductive disorder associated with metabolic disturbances including obesity, insulin resistance, and diabetes mellitus. Here we investigate whether changes in the metabolic profile of PCOS women are driven by increased tendency to obesity or are specific features of PCOS related to increased testosterone levels. DESIGN AND METHODS: We conducted an NMR metabolomics association study of PCOS cases (n=145) and controls (n=687) nested in a population-based birth cohort (n=3,127)...
May 26, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28546115/both-polarity-and-aromatic-ring-in-the-side-chain-of-tryptophan-246-are-involved-in-binding-activity-of-vibrio-vulnificus-hemolysin-to-target-cells
#7
Takashige Kashimoto, Tomoe Akita, Takehiro Kado, Kohei Yamazaki, Shunji Ueno
Vibrio vulnificus secretes a hemolysin/cytolysin (VVH) that induces cytolysis against a variety of mammalian cells by forming pores on the cellular membrane. VVH is known to bind to the cellular membrane as a monomer, and then convert to a pore-forming oligomer. However, the structural basis for binding of this toxin to target cells remains unknown. We show here that the polarity and indole ring on the side chain of Trp 246 (W246) of VVH, which sits on a bottom loop, participates in binding to cellular membrane...
May 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28545987/echography-of-clinically-relevant-disorders-in-the-genital-tract-of-female-dromedary-camels
#8
Ahmed Ali, Derar Derar, Ali Alsamri, Fahd Al Sobayil
The aim of this study was to characterize the clinically relevant genital tract disorders of dromedary camels. Reproductive tract examinations were performed via transrectal palpation, ultrasonography and vaginal exploration. The ultrasonic appearance of the reproductive pathology was described and compared with its morphology at laparotomy, after surgical removal, during postmortem examination or upon slaughter. Diagnosis was also confirmed by histopathology. The most frequently encountered follicular structures were larger than typical follicles (56/338, 16...
May 19, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28545568/symbiont-dynamics-of-the-tibetan-tick-haemaphysalis-tibetensis-acari-ixodidae
#9
Rongrong Wang, Ningxin Li, Jiannan Liu, Tuo Li, Ming Liu, Zhijun Yu, Jingze Liu
BACKGROUND: Characterization of the microbial diversity and symbiont dynamics of ticks may help to understand the development of ticks and reveal new strategies to control tick-transmitted pathogens, which has not yet been explored in the Tibetan tick Haemaphysalis tibetensis. This tick species is widely distributed in the Tibetan Plateau, and is recognized as one of the primary parasites affecting domestic and wild animals. METHODS: In the present study, the endosymbionts of H...
May 25, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28545161/classic-galactosemia-study-on-the-late-prenatal-development-of-galt-specific-activity-in-a-sheep-model
#10
Ana I Coelho, Jörgen Bierau, Martijn Lindhout, Jelle Achten, Boris W Kramer, M Estela Rubio-Gozalbo
BACKGROUND: Classic galactosemia results from deficient activity of galactose-1-phosphate uridylyltransferase (GALT), a key enzyme of galactose metabolism. Despite early diagnosis and early postnatal therapeutic intervention, patients still develop neurologic and fertility impairments. Prenatal developmental toxicity has been hypothesized as a determinant factor of disease. In order to shed light on the importance of prenatal GALT activity, several studies have examined GALT activity throughout development...
May 25, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28544881/mammalian-systems-biotechnology-reveals-global-cellular-adaptations-in-a-recombinant-cho-cell-line
#11
Faraaz Noor Khan Yusufi, Meiyappan Lakshmanan, Ying Swan Ho, Bernard Liat Wen Loo, Pramila Ariyaratne, Yuansheng Yang, Say Kong Ng, Tessa Rui Min Tan, Hock Chuan Yeo, Hsueh Lee Lim, Sze Wai Ng, Ai Ping Hiu, Chung Ping Chow, Corrine Wan, Shuwen Chen, Gavin Teo, Gao Song, Ju Xin Chin, Xiaoan Ruan, Ken Wing Kin Sung, Wei-Shou Hu, Miranda Gek Sim Yap, Muriel Bardor, Niranjan Nagarajan, Dong-Yup Lee
Effective development of host cells for therapeutic protein production is hampered by the poor characterization of cellular transfection. Here, we employed a multi-omics-based systems biotechnology approach to elucidate the genotypic and phenotypic differences between a wild-type and recombinant antibody-producing Chinese hamster ovary (CHO) cell line. At the genomic level, we observed extensive rearrangements in specific targeted loci linked to transgene integration sites. Transcriptional re-wiring of DNA damage repair and cellular metabolism in the antibody producer, via changes in gene copy numbers, was also detected...
May 24, 2017: Cell Systems
https://www.readbyqxmd.com/read/28544572/inositol-treatment-of-anovulation-in-women-with-polycystic-ovary-syndrome-a-meta-analysis-of-randomised-trials
#12
Jyotsna Pundir, Dimitrios Psaroudakis, Prakash Savnur, Priya Bhide, Luca Sabatini, Helena Teede, Arri Coomarasamy, Shakila Thangaratinam
BACKGROUND: Polycystic ovary syndrome is a common cause of anovulation and infertility, and a risk factor for development of metabolic syndrome and endometrial cancer. OBJECTIVES: Systematic review and meta-analysis of randomised controlled trials that evaluated the effects of inositol as an ovulation-induction agent. SEARCH STRATEGY: We searched MEDLINE, EMBASE, Cochrane and ISI conference proceedings, Register and Meta-register for RCTs and WHO trials' search portal...
May 24, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28544349/primary-peritoneal-psammocarcinoma
#13
Vidya Chandrakant Arole, Kalpana Ananad Deshpande, Dipashri Bhaurao Jadhav, Akash Jogi
Psammocarcinoma is a rare low-grade serous carcinoma arising either from ovary or peritoneum and is characterized by extensive psammomatous calcifications and invasion of surrounding structures. Prognostically, psammocarcinoma resembles borderline serous tumor and has a much more favorable outcome than the common serous carcinoma of ovary and peritoneum.
May 19, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28543860/a-unique-case-of-bilateral-ovarian-splenosis-and-review-of-the-literature
#14
Maria Giulia Disanto, Francesca Mercalli, Andrea Palicelli, Alberto Arnulfo, Renzo Boldorini
Splenosis is an acquired anomaly related to heterotopic auto-transplantation of splenic tissue following abdominal trauma or splenectomy. We report the first definitive bilateral ovarian case in a 65-year-old woman who underwent splenectomy following a motor vehicle accident 44 years prior to presentation. We review the literature and discuss the main differential diagnoses. Gross examination revealed a 1-cm well-circumscribed dark nodule on the surface of each ovary. Paraffin-embedded, formalin-fixed blocks were sectioned and stained with hematoxylin-eosin and immunostains (CK5/6, Calretinin, WT1, Vimentin)...
May 25, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28543598/assessment-of-fallopian-tube-fimbria-patency-with-4-dimensional-hysterosalpingo-contrast-sonography-in-infertile-women
#15
Weiqun Wang, Qiulan Zhou, Yafei Gong, Ying Li, Yinying Huang, Zhiyi Chen
OBJECTIVES: The purpose of this study was to evaluate the performance of 4-dimensional (4D) hysterosalpingo-contrast sonography (HyCoSy) for assessing fallopian tube fimbria patency in infertile women. METHODS: Seventy-seven infertile female patients with obstruction at the tubal fimbria or partial obstruction with pelvic adhesions were included. All of the patients underwent 4D HyCoSy enhanced by dynamic observation after a flush of normal saline and were followed with laparoscopic chromopertubation using methylene blue within 6 months...
May 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28543550/polycystic-ovary-morphology-is-associated-with-insulin-resistance-in-women-with-polycystic-ovary-syndrome
#16
So-Hyeon Hong, Yeon-Ah Sung, Young Sun Hong, Kyungah Jeong, Hyewon Chung, Hyejin Lee
BACKGROUND/OBJECTIVES: Polycystic ovary syndrome (PCOS) is a heterogeneous disorder characterised by chronic anovulation, hyperandrogenenism, polycystic ovary morphology (PCOM), and metabolic disturbances including insulin resistance and type 2 diabetes mellitus. Although insulin resistance could be associated with PCOM, recent studies have shown controversial results. The aim of this study was to determine the relationship between PCOM and insulin resistance. SUBJECTS/METHODS: This was a cross-sectional clinical study...
May 20, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28543529/kir2-1-and-k2p1-channels-reconstitute-two-levels-of-resting-membrane-potential-in-cardiomyocytes
#17
Dongchuan Zuo, Kuihao Chen, Min Zhou, Zheng Liu, Haijun Chen
Strong inward rectifier K(+) (Kir2) channels primarily maintain normal resting membrane potential of cardiomyocytes. In sub-physiological extracellular K(+) concentrations or pathological hypokalaemia, human cardiomyocytes show both hyperpolarized and depolarized resting membrane potentials; these depolarized potentials cause cardiac arrhythmia; however, the underlying mechanism is unknown. Here we show that Kir2.1 currents non-linearly counterbalance hypokalaemia-induced K2P1 leak cation currents, reconstituting two levels of resting membrane potential in cardiomyocytes...
May 24, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28543358/transient-arrest-of-germinal-vesicle-breakdown-improved-in-vitro-development-potential-of-buffalo-bubalus-bubalis-oocytes
#18
Sandeep Kumar, Manish Kumar, Sunny Dholpuria, Parul Sarwalia, Vipul Batra, Sachinandan De, Rakesh Kumar, T K Datta
Germinal vesicle breakdown (GVBD) is the first milestone that an oocyte needs to achieve towards completing the maturation and gaining potential to fertilise. Significantly lower in vitro embryo production rate in buffaloes can be attributed to heterogeneity of GVBD occurrence among oocytes obtained from abattoir derived ovaries. Evidence from our earlier work had suggested that different qualities of buffalo oocytes differ significantly in their timing of GVBD. Besides, these oocytes also differ in terms of volume of Akt phosphorylation, which initiates the process of GVBD...
May 25, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28543175/microrna-141-3p-targets-dapk1-and-inhibits-apoptosis-in-rat-ovarian-granulosa-cells
#19
Dandan Li, Duo Xu, Ying Xu, Lu Chen, Chunjin Li, Xiaowei Dai, Lili Zhang, Lianwen Zheng
The polycystic ovary syndrome (PCOS) is a complex and heterogeneous endocrine disorder. MicroRNAs negatively regulate the expression of target genes at posttranscriptional level by binding to the 3' untranslated region of target genes. Our previous study showed that miR-141-3p was dramatically decreased in the ovaries of rat PCOS models. In this study, we aimed to characterize the target of miR-141-3p in rat ovarian granulosa cells. 3-(4,5-Dimethylthiazol-2-Yl)-2,5-Diphenyltetrazolium Bromide (MTT) assay showed that cell viability was dramatically increased when miR-141-3p was overexpressed but was decreased when miR-141-3p was interfered...
May 22, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28543099/evidence-of-altered-mitochondrial-protein-expression-after-chronic-ethanol-consumption-in-the-aged-estrogen-deficient-female-rat-heart
#20
Alexandra M Garvin, J L Miller-Lee, D R Sharda, G M Kanski, J C Hunter, Donna H Korzick
BACKGROUND: Estrogen loss has been implicated to increase the risk of alcoholic cardiomyopathy in post-menopausal women. The purpose of this study was to identify novel mitochondrial protein targets for the treatment of alcoholic cardiomyopathy in aged women using a state-of-the-art proteomics approach. We hypothesized that chronic ethanol (EtOH) ingestion exacerbates maladaptive mitochondrial protein expression in the aged female heart METHODS: Adult (3 mo) and aged (18 mo) F344 ovary-intact or ovariectomized (OVX) rats were randomly assigned an EtOH or control Lieber-DeCarli 'all liquid' diet for 20 wks...
May 19, 2017: Alcoholism, Clinical and Experimental Research
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