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https://www.readbyqxmd.com/read/29323738/an-epididymis-specific-secretory-protein-clpsl2-critically-regulates-sperm-motility-acrosomal-integrity-and-male-fertility
#1
Xiaosheng Lu, Fei Ding, Zizhen Lian, Lei Chen, Zuowu Cao, Yiqing Guan, Ran Chen, Dongqing Cai, Yanhong Yu
The epididymis performs an important role in the maturation of spermatozoa including their acquisition of progressive motility and fertilizing ability. However, the molecular mechanisms that govern these maturational events are still poorly defined. Here we report that Clpsl2, a novel colipase homology, is exclusively expressed in the caupt epididymis and conserved in mammalian. Clpsl2 was secreted into the lumen and covered the acrosome region and principal piece of spermatozoa tail. And during epididymal transit, the binding rate between Clpsl2 protein and the spermatozoa gradually decreased...
January 11, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29317127/low-dosing-of-gonadotropins-in-in%C3%A2-vitro-fertilization-cycles-for-women-with-poor-ovarian-reserve-systematic-review-and-meta-analysis
#2
Mohamed Abdel-Fattah Youssef, Madelon van Wely, Monique Mochtar, Usama Mohamed Fouda, Ashraf Eldaly, Eman Zein El Abidin, Ahmed Elhalwagy, Ahmed Abdel Mageed Abdallah, Sherif Sameh Zaki, Mohamed Sayed Abdel Ghafar, Mohamed Nagi Mohesen, Fulco van der Veen
OBJECTIVE: To evaluate the effectiveness of low doses of gonadotropins and gonadotropins combined with oral compounds compared with high doses of gonadotropins in ovarian stimulation regimens in terms of ongoing pregnancy per fresh IVF attempt in women with poor ovarian reserve undergoing IVF/intracytoplasmic sperm injection (ICSI) treatment. DESIGN: A systematic review and meta-analysis of randomized controlled studies that evaluate the effectiveness of low dosing of gonadotropins alone or combined with oral compounds compared with high doses of gonadotropins in women with poor ovarian reserve undergoing IVF/ICSI treatment...
January 6, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29314167/comparative-histomorphological-study-of-endometrium-in-mares
#3
M Herrera, J M Herrera, S Cantatore, J Aguilar, A Felipe, E Fumuso
Uterine acute post-breeding inflammation is a physiological tissue response to the entry of exogenous elements, with persistent endometritis being the main pathology responsible for subfertility in the mare (Equus ferus caballus; Linnaeus, 1758). Mares can be classified as susceptible or resistant to endometritis according to their ability to remove intrauterine fluid within 48 hr after experimental inoculation. Endometrial biopsy is a technique that is commonly used to establish the degree of lesions that can affect the fertility of the mare...
January 3, 2018: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/29310168/re-outcomes-of-anastrozole-in-oligozoospermic-hypoandrogenic-subfertile-men
#4
Craig Niederberger
No abstract text is available yet for this article.
January 2018: Journal of Urology
https://www.readbyqxmd.com/read/29300908/sex-and-age-specific-impact-of-erk-loss-within-the-pituitary-gonadotrope-in-mice
#5
Jessica L Brown, Jianjun Xie, Miguel Brieno Enriquez, Jennifer Sones, Cynthia N Angulo, Ulrich Boehm, Andrew Miller, Chirine Toufaily, Ying Wang, Daniel J Bernard, Mark S Roberson
Extracellular signal-regulated kinase (ERK) signaling regulates hormone action in the reproductive axis, but specific mechanisms have yet to be completely elucidated. In the present study, ERK1 null and ERK2 floxed mice were combined with a gonadotrope-specific Cre (GRIC) driver. Female ERK double knockout (ERKdko) animals were hypogonadotropic, resulting in anovulation and complete infertility. Transcript levels of four gonadotrope-specific genes (GnRHR and the three gonadotropin subunits) were reduced in pituitaries at estrus in ERKdko females and the post-castration response to endogenous GnRH hyper-stimulation was blunted...
January 3, 2018: Endocrinology
https://www.readbyqxmd.com/read/29297114/variation-analysis-of-pum1-gene-in-chinese-women-with-primary-ovarian-insufficiency
#6
Wei Luo, Hanni Ke, Ran Liu, Yingying Qin, Winifred Mak, Jinlong Ma, Shidou Zhao, Zi-Jiang Chen
Accumulating evidence has indicated that the genes involved in meiosis are highly correlated with ovarian function. Pumilio 1 (PUM1) is a RNA-binding protein which is involved in the meiotic process. It has been reported that the Pum1 knockout female mice displayed subfertility due to the decrease in primordial follicle pool. The aim of our study is to investigate whether variants of the PUM1 gene are responsible for primary ovarian insufficiency (POI) in Chinese women. We analyzed coding sequence and untranslated regions of the PUM1 gene in 196 Han Chinese women with non-syndromic POI and 192 controls...
January 3, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29289627/management-prevention-and-sequelae-of-adhesions-in-women-undergoing-laparoscopic-gynecologic-surgery-a-systematic-review
#7
REVIEW
Sara Farag, Pamela Frazzini Padilla, Katherine A Smith, Michael L Sprague, Stephen E Zimberg
Surgical adhesions can lead to significant consequences including abdomino-pelvic pain, bowel obstruction, subfertility, and subsequent surgery. Although laparoscopic surgery is associated with decreased risk of adhesion formation, methods to further decrease adhesions are warranted. We systematically reviewed literature addressing the management, prevention, and sequelae of adhesions in women undergoing laparoscopic gynecologic surgery. We searched PubMed, EMBASE, EBSCOhost, and CENTRAL and found 6566 records...
December 28, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29282757/level-of-neutral-alpha-1-4-glucosidase-in-seminal-plasma-of-chinese-men
#8
Z Qiu, Q Chu, W Zhang, C Luo, S Quan
Neutral alpha-1,4-glucosidase (NAG) is a crucial biomarker for the function of epididymis and is reported to be associated with semen quality. However, the correlation between NAG and Chinese semen quality has never been reported. This study aimed to investigate the level of NAG in the seminal plasma of Chinese men. A total of 394 cases of seminal plasma samples from normal, subfertile and infertile men were enrolled in this study. Male subfertility was caused by teratozoospermia, asthenospermia, severe oligozoospermia, asthenoteratozoospermia, oligoasthenospermia and oligoasthenoteratozoospermia...
December 28, 2017: Andrologia
https://www.readbyqxmd.com/read/29259456/protein-biomarkers-for-male-artificial-insemination-subfertility-in-bovine-spermatozoa
#9
REVIEW
Hiroshi Harayama, Kenta Minami, Kazumi Kishida, Taichi Noda
Background: Although artificial insemination (AI) technique is an established biotechnology for bovine reproduction, the results of AI (conception rates) have a tendency to decline gradually. To our annoyance, moreover, AI-subfertile bulls have been occasionally found in the AI centers. To resolve these serious problems, it is necessary to control the sperm quality more strictly by the examinations of sperm molecules. Methods: We reviewed a number of recent articles regarding potentials of bovine sperm proteins as the biomarkers for bull AI-subfertility and also showed our unpublished supplemental data on the bull AI-subfertility associated proteins...
April 2017: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29242273/rbpj-mediates-uterine-repair-in-the-mouse-and-is-reduced-in-women-with-recurrent-pregnancy-loss
#10
Michael R Strug, Ren-Wei Su, Tae Hoon Kim, Alessandro Mauriello, Carlo Ticconi, Bruce A Lessey, Steven L Young, Jeong Mook Lim, Jae-Wook Jeong, Asgerally T Fazleabas
Unexplained recurrent pregnancy loss (uRPL) is associated with repeated embryo loss and endometrial repair with elevated endometrial expression of inflammatory cytokines, including IFN-γ. Notch signaling through its transcription factor recombination signal binding protein Jκ (RBPJ) regulates mechanisms including the immune response and repair after tissue injury. Initially, null mutation of RBPJ in the mouse uterus (Pgrcre/+Rbpjf/f ; Rbpj c-KO) results in subfertility, but we have found that these mice become infertile after pregnancy as a result of dysfunctional postpartum uterine repair, including delayed endometrial epithelial and myometrial regeneration...
December 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29240820/age-related-nomograms-for-antral-follicle-count-and-anti-mullerian-hormone-for-subfertile-chinese-women-in-singapore
#11
See Ling Loy, Yin Bun Cheung, Marielle Valerie Fortier, Chiou Li Ong, Heng Hao Tan, Sadhana Nadarajah, Jerry Kok Yen Chan, Veronique Viardot-Foucault
BACKGROUND: Antral follicle count (AFC) and anti-Mullerian hormone (AMH) are known as the most reliable markers of a woman's ovarian reserve and are related to age. There is currently no specific local age-related centile charts for AFC and AMH. Therefore, we aim to examine the relationship between AFC and AMH with age and construct age-related nomograms among a subfertile Asian population. METHODS: This is a study involving Chinese women who had their AFC and AMH measured as part of their subfertility screening from December 2010 until November 2014 in KK Women's and Children's Hospital, Singapore...
2017: PloS One
https://www.readbyqxmd.com/read/29230837/alterations-in-dna-methylation-patterns-and-gene-expression-in-spermatozoa-of-subfertile-males
#12
M Laqqan, M E Hammadeh
This study was designed to evaluate the DNA methylation patterns and gene expression in spermatozoa from subfertile males. Thirty samples were subjected to 450K arrays as a screening study to evaluate the variation in sperm DNA methylation levels between cases and controls groups, and then three CpG sites (cg07227024, cg05813498 and cg23081194) have the highest difference in methylation levels and located within ALS2CR12, GAA and UBE2G2 genes respectively; these were selected for further analysis using deep bisulphite sequencing and qPCR in 136 samples (64 proven fertile males "controls" and 72 subfertile males "cases")...
December 12, 2017: Andrologia
https://www.readbyqxmd.com/read/29228019/loci-and-pathways-associated-with-uterine-capacity-for-pregnancy-and-fertility-in-beef-cattle
#13
Mahesh Neupane, Thomas W Geary, Jennifer N Kiser, Gregory W Burns, Peter J Hansen, Thomas E Spencer, Holly L Neibergs
Infertility and subfertility negatively impact the economics and reproductive performance of cattle. Of note, significant pregnancy loss occurs in cattle during the first month of pregnancy, yet little is known about the genetic loci influencing pregnancy success and loss in cattle. To identify quantitative trait loci (QTL) with large effects associated with early pregnancy loss, Angus crossbred heifers were classified based on day 28 pregnancy outcomes to serial embryo transfer. A genome wide association analysis (GWAA) was conducted comparing 30 high fertility heifers with 100% success in establishing pregnancy to 55 subfertile heifers with 25% or less success...
2017: PloS One
https://www.readbyqxmd.com/read/29223476/fecundity-in-an-infertile-man-with-r-15-a-challenge-to-the-current-paradigm
#14
Hamid Kalantari, Hamideh Karimi, Seyed Navid Almadani, Mostafa Fakhri, Pegah Mokhtari, Hamid Gourabi, Anahita Mohseni Meybodi
Ring chromosome 15 [r(15)] is a rare condition with a mild-to-severe growth failure, mental disabilities, café-au-lait spots, specific facial features, fertility difficulties and other minor dysmorphic stigmata. Of almost 50 affected individuals reported in the literature, none were assessed for the precise breakpoint positioning, which creates uncertainty in defining a specific phenotype for the deleted segment. This study reports for the first time the vertical transmission of r(15) in three consecutive generations of a family, including a subfertile man, his mother and his newborn infant...
November 22, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29222649/effect-of-oral-zinc-supplementation-on-the-thiol-oxido-reductive-index-and-thiol-related-enzymes-in-seminal-plasma-and-spermatozoa-of-iraqi-asthenospermic-patients
#15
Abdul Razzaq S Alsalman, Lamia A Almashhedy, Mahmoud Hussein Hadwan
A thiol group plays an essential role in sperm metabolism and the antioxidative defense state. Zinc is the second most abundant element in the human body, following iron. The present study was conducted to study the effect of zinc supplementation on the characteristics of semen along with thiol and thiol-related enzymes in semen of asthenospermic patients. Semen samples were obtained from 60 fertile and 60 asthenospermic men, from couples who had consulted the infertility clinic of Babil Hospital (Hillah city, Iraq)...
December 8, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29208873/correlation-between-seropositivity-of-chlamydia-trachomatis-and-tubal-and-or-pelvic-pathology-detected-by-diagnostic-laparoscopy-in-subfertile-women
#16
N Begum, S A Anwary, M Alfazzaman, Z Mahzabin, F Deeba, M A Mostafa, M Akhter, M M Rahman
This prospective observational study was carried out in the Infertility Unit, Department of Obstetrics and Gynaecology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, from February 2011 to December 2013. Sixty-nine (69) subfertile women who were seropositive for Chlamydia Trachomatis were included in this study. Inclusion criteria was patients with sub-fertility having age between 22 and 40 years, seeking infertility treatment, normal ovarian function, all normozoospermic male partner, duration of infertility ranged from 1...
October 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29197295/reproductive-aging-in-male-dogs-the-epididymal-sperm-defects-and-expression-of-androgen-receptor-in-reproductive-tissues
#17
C Bhanmeechao, S Srisuwatanasagul, N Prapaiwan, S Ponglowhapan
The present study aimed at investigating age-related changes in epididymal sperm motility, morphology, DNA integrity and androgen receptor (AR) expression in canine reproductive tissues. Fifty-five healthy medium-sized male dogs were divided into four groups: young (1 - 3 years old, n = 14), adult (>3 - 6 years old, n = 12), old (>6 - 9 years old, n = 14) and senile (>9 years old, n = 15). After routine castration, testes, epididymides (head, body and tail) and vas deferens were collected. Spermatozoa were flushed from epididymal tails and their motility, morphology and DNA integrity were examined...
November 16, 2017: Theriogenology
https://www.readbyqxmd.com/read/29186366/human-endometrial-stromal-cell-decidualization-requires-transcriptional-reprogramming-by-plzf
#18
Maria M Szwarc, Lan Hai, William E Gibbons, Mary C Peavey, Lisa D White, Qianxing Mo, David M Lonard, Ramakrishna Kommagani, Rainer B Lanz, Francesco J DeMayo, John P Lydon
Infertility and early embryo-miscarriage is linked to inadequate endometrial decidualization. Although transcriptional reprogramming is known to drive decidualization in response to progesterone, the key signaling effectors that directly mediate this hormone response are not fully known. This knowledge-gap is clinically significant because identifying the early signals that directly mediate progesterone-driven decidualization will address some of the current limitations in diagnosing and therapeutically treating patients at most risk for early pregnancy loss...
November 25, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29183107/insulin-sensitising-drugs-metformin-rosiglitazone-pioglitazone-d-chiro-inositol-for-women-with-polycystic-ovary-syndrome-oligo-amenorrhoea-and-subfertility
#19
REVIEW
Lara C Morley, Thomas Tang, Ephia Yasmin, Robert J Norman, Adam H Balen
BACKGROUND: Polycystic ovary syndrome (PCOS) is characterised by infrequent or absent ovulation, and high levels of androgens and insulin (hyperinsulinaemia). Hyperinsulinaemia occurs secondary to insulin resistance and is associated with increased risk of cardiovascular disease and diabetes mellitus. Insulin-sensitising agents such as metformin may be effective in treating PCOS-related anovulation. OBJECTIVES: To evaluate the effectiveness and safety of insulin-sensitising drugs in improving reproductive and metabolic outcomes for women with PCOS undergoing ovulation induction...
November 29, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29180785/deleting-the-mouse-hsd17b1-gene-results-in-a-hypomorphic-naglu-allele-and-a-phenotype-mimicking-a-lysosomal-storage-disease
#20
Heli Jokela, Janne Hakkarainen, Laura Kätkänaho, Pirjo Pakarinen, Suvi T Ruohonen, Manuel Tena-Sempere, Fu-Ping Zhang, Matti Poutanen
HSD17B1 is a steroid metabolising enzyme. We have previously generated knockout mice that had the entire coding region of Hsd17b1 replaced with lacZ-neo cassette (Hsd17b1-LacZ/Neo mice). This resulted in a 90% reduction of HSD17B1 activity, associated with severe subfertility in the knockout females. The present study indicates that Hsd17b1-LacZ/Neo male mice have a metabolic phenotype, including reduced adipose mass, increased lean mass and lipid accumulation in the liver. During the characterisation of this metabolic phenotype, it became evident that the expression of the Naglu gene, located closely upstream of Hsd17b1, was severely reduced in all tissues analysed...
November 27, 2017: Scientific Reports
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