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https://www.readbyqxmd.com/read/29334661/altered-expression-of-il-1%C3%AE-il-1ri-il-1rii-il-1ra-and-il-4-could-contribute-to-anovulation-and-follicular-persistence-in-cattle
#1
A F Stassi, M E Baravalle, E M Belotti, A N Amweg, E Angeli, M M L Velázquez, F Rey, N R Salvetti, H H Ortega
Cystic ovarian disease (COD) is an important cause of infertility in dairy cattle. The main signs of this infertility are ovulation failure and follicular persistence. The aim of this study was to examine the expression of the cytokines IL-1β, IL-1RI, IL-1RII, IL-1RA and IL-4 in ovarian follicular structures at different times of persistence in a model of follicular persistence induced by prolonged administration of progesterone in dairy cows. Protein expression of IL-1β, IL-1RI, IL-1RII, IL-1RA and IL-4 was evaluated by immunohistochemistry...
January 3, 2018: Theriogenology
https://www.readbyqxmd.com/read/29334660/global-proteomic-analysis-of-water-buffalo-bubalus-bubalis-saliva-at-different-stages-of-estrous-cycle-using-high-throughput-mass-spectrometry
#2
N G Shashikumar, R K Baithalu, S Bathla, S A Ali, P Rawat, A Kumaresan, S Kumar, B R Maharana, G Singh, D S Puneeth Kumar, S K Singh, S S Lathwal, L Jaiswal, T K Mohanty, A K Mohanty
Accurate and efficient detection of estrus is one of the major constraints for exploitation of the production potential of buffalo owing to its poor manifestation of estrus signs, seasonal differences in expression and higher incidences of silent estrus (29%). The current study focused on identification of estrus specific candidate proteins in saliva of buffaloes. Estrus was detected based on behavioral signs in response to the teaser and changes in reproductive organs and confirmed by per-rectal examination, trans-rectal USG of reproductive organs, cervico-vaginal mucus characteristics and blood serum progesterone estimation...
January 9, 2018: Theriogenology
https://www.readbyqxmd.com/read/29334208/effects-of-crocin-on-the-pituitary-gonadal-axis-and-hypothalamic-kiss-1-gene-expression-in-female-wistar-rats
#3
Dina Zohrabi, Kazem Parivar, Mohammad Hossein Sanati, Nasim Hayati Roodbari
Background: Saffron (Crocus sativus L.) has been traditionally used as a spice for coloring and flavoring in some countries cuisine. One of the main components of saffron is Crocin. Recent research have shown that crocin has various pharmacological effects. The aim of this study was to assess the effects of crocin on the Pituitary-Gonadal axis and Kiss-1 gene expression in hypothalamus and ovarian tissue organization in female Wistar rats. MATERIALS AND METHODS: In this experimental study, 18 adult female Wistar rats were randomly divided into three groups...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29333017/correlation-of-hormone-receptor-and-human-epidermal-growth-factor-receptor-2-neu-expression-in-breast-cancer-with-various-clinicopathologic-factors
#4
Cherry Bansal, Aarti Sharma, Mukta Pujani, Meenu Pujani, Kiran Lata Sharma, A N Srivastava, U S Singh
Background: A significant development in the breast carcinoma management is the correlation between the presence of hormone receptors in the tumor and response to hormonal therapy and chemotherapy. Human epidermal growth factor receptor-2/neu (Her-2/neu) overexpression also serves as a very useful parameter to predict response to herceptin. Aim of Study: The study was conducted to correlate immunohistochemical expression of markers such as estrogen receptor (ER), progesterone receptor (PR), and Her-2/neu with various clinicopathologic parameters...
October 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29332622/in-vivo-and-in-vitro-strategies-to-support-caprine-preantral-follicle-development-after-ovarian-tissue-vitrification
#5
N J Donfack, K A Alves, B G Alves, R M P Rocha, J B Bruno, L F Lima, C H Lobo, R R Santos, S F S Domingues, M Bertolini, J Smitz, A P R Rodrigues
The aim of the present study was to compare fresh and vitrified goat ovarian tissue after autotransplantation and in vitro culture. Adult goats were completely ovariectomised and each ovarian pair was sliced and distributed among six different treatment groups: fresh control, fresh transplant, fresh culture, vitrified control, vitrified transplant and vitrified culture. Follicular morphology, development, growth, density, revascularisation and hormone production were evaluated in all groups. Three antral follicles (two in the fresh transplant and one in the vitrified transplant groups) were observed on the surface of the graft 90 days after transplantation...
January 15, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29332610/improvements-in-the-conception-rate-milk-composition-and-embryo-quality-of-rabbit-does-after-dietary-enrichment-with-n-3-polyunsaturated-fatty-acids
#6
M Rodríguez, R M García-García, M Arias-Álvarez, P Millán, N Febrel, N Formoso-Rafferty, J López-Tello, P L Lorenzo, P G Rebollar
This work attempts to confirm the effect of an enriched diet with n-3 polyunsaturated fatty acids (PUFA) trying to mitigate the reproductive performances issues such as low conception rate of primiparous rabbits. A total of 127 does were fed ad libitum throughout their two first cycles with two diets with different fat sources: mixed fat in the control and salmon oil in the enriched one, with 3.19 g/100 g (n=63 does) and 28.77 g/100 g (n=64 does) of n-3 of the total fatty acid, respectively. Feed intake was similar between groups (P>0...
January 15, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29332425/dermatological-manifestations-in-patients-undergoing-in-vitro-fertilisation-a-prospective-study
#7
Aradhana Sood, Suvash Sahu, Sandeep Karunakaran, Rajneesh K Joshi, Deep Kumar Raman
BACKGROUND: Changing sociodemographic patterns with an increase in the age of childbirth have affected fertility rates worldwide. With advancing reproductive medicine, assisted reproductive techniques (ARTs) are becoming common. While dermatological manifestations in normal pregnancies have been well documented, there is a paucity of data regarding cutaneous manifestations in patients undergoing ART. OBJECTIVES: The objectives of our study were to estimate the incidence and types of dermatological manifestations in patients undergoing in vitro fertilisation (IVF) and to study their associations with age, type of infertility, and outcome of the procedure...
January 1, 2018: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/29332343/clinical-relevance-of-telomerase-polymorphism-for-breast-cancer-a-systematic-review
#8
Katherine de Souza Rodrigues, Joao Nunes de Matos Neto, Rodrigo Haddad, Diego Madureira de Oliveira
PURPOSE: To perform a systematic review to explore the clinical relevance of hTERT polymorphisms for breast cancer (BC). METHODS: Twenty-nine polymorphic regions were evaluated after comprehensive searching of 1236 articles, and selection of 9 publications (total of 12986 cases and 16758 controls). RESULTS: About the influence of hTERT variants in BC risk, 3 studies showed that the variant rs2736098 was associated with increasing risk. The variants rs10069690 and rs2853676 were also described as risk factors for BC...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29331829/additional-small-dose-of-prostaglandin-f2%C3%AE-at-timed-artificial-insemination-failed-to-improve-pregnancy-risk-of-lactating-dairy-cows
#9
J A Sauls, B E Voelz, L G D Mendonça, J S Stevenson
Two experiments were performed to test the hypothesis that administering PGF2α concurrent with timed artificial insemination (AI) in lactating dairy cows would enhance pregnancy per AI (P/AI). In experiment 1, lactating Holstein cows (n = 289) in one herd were enrolled after a non-pregnancy diagnosis (30-36 d after AI) to synchronize subsequent ovulation before AI. Cows were assigned randomly to receive (im) 10 mg of PGF2α concurrent with timed AI (Day 0; treatment) or no injection (control). Blood samples were collected on Days -3, 0, and 13 to determine serum concentrations of progesterone...
January 3, 2018: Theriogenology
https://www.readbyqxmd.com/read/29331723/progesterone-arrested-cell-cycle-progression-through-progesterone-receptor-isoform-a-in-pancreatic-neuroendocrine-neoplasm
#10
Samaneh Yazdani, Atsuko Kasajima, Yoshiaki Onodera, Keely May McNamara, Kazue Ise, Yasuhiro Nakamura, Tomoyoshi Tachibana, Fuyuhiko Motoi, Michiaki Unno, Hironobu Sasano
In pancreatic neuroendocrine neoplasms (Pan-NEN) progesterone signaling has been shown to have both inhibitory and stimulatory effects on cell proliferation. The ability of progesterone to inhibit tumor proliferation is of particular interest and is suggested to be mediated through the less abundantly expressed progesterone receptor (PR) isoform A (PRA). To date the mechanistic processes underlying this inhibition of proliferation remain unclear. To examine the mechanism of PRA actions, the human Pan-NEN cell line QGP-1, that endogenously expresses PR isoform B (PRB) without PRA, was transfected with PRA...
January 10, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29331456/vocalization-as-an-indicator-of-estrus-climax-in-holstein-heifers-during-natural-estrus-and-superovulation
#11
Volker Röttgen, Frank Becker, Armin Tuchscherer, Christine Wrenzycki, Sandra Düpjan, Peter C Schön, Birger Puppe
The reliable detection of estrus is an important scientific and practical challenge in dairy cattle farming. Female vocalization may indicate reproductive status, and preliminary evidence suggests that this information can be used to detect estrus in dairy cattle. The aim of this study was to associate the changes in the vocalization rate of dairy heifers with behavioral estrus indicators as well as test the influence of the type of estrus (natural estrus vs. superovulation-induced estrus). We analyzed 6 predefined estrus-related behavior patterns (standing to be mounted, head-side mounting, active mounting, chin resting, being mounted while not standing, and active sniffing in the anogenital region) and vocalization rates in the peri-estrus period (day of estrus ± 1 d) of 12 German Holstein heifers using audio-visual recordings...
January 10, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29330967/the-impact-of-bisphenol-s-on-bovine-granulosa-and-theca-cells
#12
K A Campen, M Lavallee, Cmh Combelles
Bisphenol S (BPS) is an endocrine-disrupting chemical with multiple potential mechanisms of action, including as an oestrogen receptor agonist. BPS is increasingly used in plastics and thermal receipts as a substitute for bisphenol A, which has been phased out due to concerns about human health implications. The ability of BPS to alter female reproductive function in mammals has not been widely studied, despite the importance of normal hormone signalling for female reproduction. The aim of this study was to investigate how BPS (in a wide range of doses, including very low doses) affects granulosa cell and theca cell steroid hormone production and cell viability in the bovine...
January 12, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29330856/reproductive-history-breast-feeding-and-risk-of-triple-negative-breast-cancer-the-breast-cancer-etiology-in-minorities-bem-study
#13
Esther M John, Lisa M Hines, Amanda I Phipps, Jocelyn Koo, Teri A Longacre, Sue A Ingles, Kathy B Baumgartner, Martha L Slattery, Anna H Wu
Few risk factors have been identified for triple negative breast cancer (TNBC) which lacks expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). This more aggressive subtype disproportionately affects some racial/ethnic minorities and is associated with lower survival. We pooled data from three population-based studies (558 TNBC and 5,111 controls) and examined associations of TNBC risk with reproductive history and breast-feeding. We estimated odds ratios (OR) and 95% confidence intervals (CI) using multivariable logistic regression...
January 13, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29330782/characterization-of-the-pharmacokinetics-of-vilaprisan-bioavailability-excretion-biotransformation-and-drug-drug-interaction-potential
#14
Marcus-Hillert Schultze-Mosgau, Joachim Höchel, Olaf Prien, Torsten Zimmermann, Ashley Brooks, Jim Bush, Antje Rottmann
BACKGROUND AND OBJECTIVES: In-vitro data suggest that clearance of vilaprisan is mediated by cytochrome P450 3A4 (oxidation) and aldoketoreductases (reduction). To fully understand the elimination and biotransformation pathways of vilaprisan, a selective progesterone receptor modulator, and to quantify the impact of cytochrome P450 3A4 inhibition on the pharmacokinetics of vilaprisan, two clinical studies in healthy postmenopausal women were conducted. METHODS: In study 1, pharmacokinetics, mass balance, and metabolite patterns were determined after single oral administration of 5 mg of [14C]-labeled vilaprisan in six subjects...
January 12, 2018: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29330698/circulating-hormones-and-mammographic-density-in-premenopausal-women
#15
Kimberly A Bertrand, A Heather Eliassen, Susan E Hankinson, Bernard A Rosner, Rulla M Tamimi
Prior research suggests that several endogenous hormones in premenopausal women are associated with breast cancer risk; however, few studies have evaluated associations of endogenous hormones with mammographic density (MD) in premenopausal women. We conducted a cross-sectional study of plasma hormone levels in relation to MD among 634 cancer-free premenopausal women in the Nurses' Health Study II. We measured percent MD from screening mammograms using a computer-assisted method. We assayed estradiol, estrone, and estrone sulfate in blood samples timed in early follicular and mid-luteal phases of the menstrual cycle as well as testosterone, androstenedione, progesterone, dehydroepiandrosterone (DHEA), DHEA sulfate, sex hormone-binding globulin (SHBG), and anti-Müllerian hormone in luteal or untimed samples...
January 12, 2018: Hormones & Cancer
https://www.readbyqxmd.com/read/29329415/establishment-of-a-three-dimensional-model-to-study-human-uterine-angiogenesis
#16
Camille L Duran, Colette A Abbey, Kayla J Bayless
STUDY QUESTION: Can primary human uterine microvascular endothelial cells (UtMVECs) be used as a model to study uterine angiogenic responses in vitro that are relevant in pregnancy? SUMMARY ANSWER: UtMVECs demonstrated angiogenic responses when stimulated with proangiogenic factors, including sphingosine 1-phosphate (S1P), vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), physiological levels of wall shear stress (WSS), human chorionic gonadotropin (hCG) and various combinations of estrogen and progesterone...
December 21, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29329080/intrauterine-inflammatory-activation-functional-progesterone-withdrawal-and-the-timing-of-term-and-preterm-birth
#17
REVIEW
Jeffrey A Keelan
The central role of inflammatory processes in labour and delivery is now well-recognised. However, the biomolecular, immunological and endocrine mechanisms involved in the labour process, and the clinical manifestations of inflammation in pregnancy, are complex, variable and modulated by factors such as aetiology, ethnicity and gestational age. In this review, evidence is presented of the pivotal relationship between progesterone and inflammation in pregnancy in terms of determining the timing of labour and delivery...
December 22, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29328875/environmental-determinants-of-breast-cancer
#18
Robert A Hiatt, Julia Green Brody
In the United States, breast cancer is the most common invasive malignancy and the second most common cause of death from cancer in women. Reproductive factors, estrogen, and progesterone have major causal roles, but concerns about other potential causes in the external environment continue to drive research inquiries and stimulate calls for action at the policy level. The environment is defined as anything that is not genetic and includes social, built, and chemical toxicant aspects. This review covers the scope of known and suspected environmental factors that have been associated with breast cancer and illustrates how epidemiology, toxicology, and mechanistic studies work together to create the full picture of environmental effects on this malignancy...
January 12, 2018: Annual Review of Public Health
https://www.readbyqxmd.com/read/29328024/endometrial-polyps-in-women-of-reproductive-age-clinical-and-pathogene-tic-variations
#19
N Kosei, N Zakharenko, D Herman
The aim of the study was to study the relationship between the morphofunctional characteristics of the endometrium, hormonal homeostasis and microbiocenosis of the reproductive system in patients with endometrial polyps. The study involved 130 patients aged 18-35 years: 34 patients with endometrial polyps, 30 patients with micropolyps, 36 patients with endometrial polyps and micropolyps, 30 healthy women of the control group. Hysteroscopy was performed for women who had been suspected for endometrial polyps and who had infertility or repeated recurrent miscarriages...
December 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29328022/-endometriosis-a-new-approach-to-etiology-and-pathogenesis-review
#20
A Solopova, A Makacarya, E Chukanova
Endometriosis is a dyshormonal immune-dependent genetically determined disease, which appears as an endometrioid tissue that grows outside the uterine. Endometriosis is one of the most urgent problems of medicine. To date, new concepts of the endometriosis etiology and pathogenesis have been developed, but, despite their abundance, there is no unified theory. Genetic and epigenetic factors result in changes in an expression of aromatase, steroidogenic factor 1, and estrogen receptors are suggested to be the main cause of endometriosis...
December 2017: Georgian Medical News
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