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https://www.readbyqxmd.com/read/29784463/anti-m%C3%A3-llerian-hormone-profiling-in-prepubertal-horses-and-its-relationship-with-gonadal-function
#1
Dragos Scarlet, Manuela Wulf, Juliane Kuhl, Martin Köhne, Natascha Ille, Alan J Conley, Christine Aurich
Anti-Müllerian hormone (AMH) has gained increasing interest as a biomarker for assessment of gonadal activity. The ability to predict the ovarian follicular reserve of prepubertal female horses (fillies) or to identify stallions with testicular pathologies already during their prepubertal life has not been analyzed so far. Both would help to select fertile horses and reduce costs associated with keeping animals. The objectives of the present study were to (1) assess AMH, LH, FSH, progesterone (females) and testosterone (males) dynamics in prepubertal horses from birth onwards and (2) determine whether AMH concentrations detected in plasma of prepubertal female and male horses are correlated with postpubertal gonadal development...
May 15, 2018: Theriogenology
https://www.readbyqxmd.com/read/29783652/pituitary-gonadal-thyroid-hormones-and-endocrine-disruptors-in-pre-and-postmenopausal-nigerian-women-with-er-pr-and-her-2-positive-and-negative-breast-cancers
#2
Olulope Ajayi, Mabel Charles-Davies, John Anetor, Adeyinka Ademola
Breast cancer is broadly sub-divided into hormone responsive and non-hormone responsive subtypes. Estradiol has been associated with hormone responsive breast cancers. There is, however, a paucity of information on the role of sex hormones, gonadotropins, and thyroid hormone in non-hormone responsive breast cancer. This study aimed to determine differences in the serum levels of sex hormones, gonadotropins, thyroid hormones, and endocrine disruptors (lead, cadmium, and arsenic) in Nigerian women with hormone responsive and non-hormone responsive breast cancers...
May 18, 2018: Medical Sciences: Open Access Journal
https://www.readbyqxmd.com/read/29781510/tramadol-opioid-abuse-is-associated-with-a-dose-and-time-dependent-poor-sperm-quality-and-hyperprolactinaemia-in-young-men
#3
A G A Farag, M A Basha, S A Amin, N F Elnaidany, N G Elhelbawy, M M T Mostafa, S A Khodier, R A Ibrahem, R Z Mahfouz
Tramadol, one of the most commonly abused drugs in Middle East, impacts spermatogenesis and disturbs reproductive hormones in animal studies. We aimed to investigate tramadol impact on sperm quality and on levels of testosterone, prolactin and gonadotropins, in tramadol abusers (n = 30) to age-matched control (n = 30). Abusers had significantly low percentages of sperm motility, normal forms and vitality compared with control (95% CI -40.7 to -19.3, -13.5 to -9.3 and -31.9 to -9.7 respectively). Hypoandrogenism (95% CI -4...
May 21, 2018: Andrologia
https://www.readbyqxmd.com/read/29781039/sex-dependent-association-of-circulating-sex-steroids-and-pituitary-hormones-with-treatment-free-survival-in-chronic-lymphocytic-leukemia-patients
#4
Eric P Allain, Karin Venzl, Patrick Caron, Véronique Turcotte, David Simonyan, Michaela Gruber, Trang Le, Eric Lévesque, Chantal Guillemette, Katrina Vanura
Chronic lymphocytic leukemia (CLL) is not considered a hormone-regulated cancer although sex is a recognized risk factor with men more frequently diagnosed and developing progressive disease. We hypothesized that variable hormonal exposure may have a sexually dimorphic influence on treatment-free survival (TFS). In 156 CLL cases, we quantitatively profiled 29 circulating steroids (progesterone, adrenal precursors, androgens, estrogens, and catechol estrogens) as well as luteinizing hormone (LH) and follicle-stimulating hormone...
May 21, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29780468/room-temperature-olefination-of-methane-with-titanium-carbon-multiple-bonds
#5
Takashi Kurogi, Joonghee Won, Bohyun Park, Oleksandra S Trofymchuk, Patrick J Carroll, Mu-Hyun Baik, Daniel J Mindiola
C-H activation of methane followed by dehydrocoupling at room temperature led ultimately to the formation of the olefin H2 C 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 CH t Bu via the addition of redox-active ligands (L) such as thioxanthone or 2,2'-bipyridine (bipy) to (PNP)Ti 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 CH t Bu(CH3 ) ( 1 )...
April 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29778382/comparison-of-the-prevalence-of-chronic-endometritis-as-determined-by-means-of-different-diagnostic-methods-in-women-with-and-without-reproductive-failure
#6
Yingyu Liu, Xiaoyan Chen, Jin Huang, Chi-Chiu Wang, Mei-Yung Yu, Susan Laird, Tin-Chiu Li
OBJECTIVE: To compare the prevalence of chronic endometritis (CE) when different diagnostic methods are used. DESIGN: Prospective observational study. SETTING: University-affiliated hospital. PATIENT(S): Four groups of women were studied, including women with proven fertility (Fertile; n = 40), unexplained recurrent miscarriage (RM; n = 93), recurrent implantation failure (RIF; n = 39), and infertile subjects undergoing endometrial scratch in a natural cycle preceding frozen-thawed embryo transfer (Infertility; n = 48)...
May 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29778367/role-of-gonadotropin-releasing-hormone-agonists-human-chorionic-gonadotropin-hcg-progesterone-and-estrogen-in-luteal-phase-support-after-hcg-triggering-and-when-in-pregnancy-hormonal-support-can-be-stopped
#7
REVIEW
Dominique de Ziegler, Paul Pirtea, Claus Yding Andersen, Jean Marc Ayoubi
Luteal phase support is mandatory in ovarian stimulation cycles in assisted reproductive technology owing to a deficit in LH pulsatility after the effects of exogenous hCG-used for triggering ovulation-vanish. This is classically accomplished by means of exogenous P administration, but emerging new options include microdoses of hCG and exogenous GnRH agonist. Although luteal phase support is commonly continued for up to 10 weeks into pregnancy, there is accumulating evidence that it can be stopped after the first ultrasound or even after a positive pregnancy test...
May 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29778272/development-of-the-waveless-bovine-model
#8
F Jimenez-Krassel, J L H Ireland, C Kronemeyer, A Wilson-Alvarado, J J Ireland
Development of a bovine model without ovarian follicular waves (waveless) and transient increases in gonadotropin secretion during estrous cycles may lead to new methods to more consistently regulate ovulatory follicle growth thereby improving efficiency of embryo transfer. We hypothesized that the GnRH antagonist acyline would inhibit gonadotropin secretion thereby blocking follicular waves, ovarian function and ovulation during estrous cycles of cattle. To test this hypothesis, beef heifers (n = 5 per group) were treated twice daily with vehicle (control) or 25 or 50 μg/kg acyline beginning 12 h after GnRH-induced ovulation and ending 21 days later...
May 15, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29777228/effects-of-clomiphene-citrate-on-male-obesity-associated-hypogonadism-a-randomized-double-blind-placebo-controlled-study
#9
Andressa Heimbecher Soares, Nidia Celeste Horie, Lucas Augusto Piccinin Chiang, Bruno Caramelli, Mariana Gomes Matheus, Alexandre Holthausen Campos, Luciana Cavalheiro Marti, Fernanda Agostini Rocha, Marcio C Mancini, Elaine Maria Frade Costa, Cintia Cercato
BACKGROUND: Obesity causes secondary hypogonadism (HG) in men. Standard testosterone (T) replacement therapy improves metabolic parameters but leads to infertility. OBJECTIVE: To evaluate clomiphene citrate (CC) treatment of adult men with male obesity-associated secondary hypogonadism (MOSH). DESIGN: Single-center, randomized, double-blind, placebo-controlled trial. PARTICIPANTS: Seventy-eight men aged 36.5 ± 7...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29774795/prospective-evaluation-of-hypogonadism-in-male-metastatic-renal-cell-carcinoma-patients-treated-with-targeted-therapies
#10
Julie Bastin, Emilie Werbrouck, Annelies Verbiest, Kevin Punie, Oliver Bechter, Sherida Feng Woei-A-Jin, Pascal Wolter, Hans Wildiers, Evelyne Lerut, Herlinde Dumez, Brigitte Decallonne, Paul Clement, Dirk Vanderschueren, Maarten Albersen, Raymond Oyen, Patrick Schöffski, Benoit Beuselinck
Objectives To study the prevalence of hypogonadism in male patients with metastatic renal cell carcinoma (mRCC) starting with targeted therapies and the impact of the vascular endothelial growth factor receptor tyrosine kinase inhibitors (VEGFR-TKIs) sunitinib and pazopanib on the luteinizing hormone (LH)/testosterone (TT)-axis. Methods Male mRCC patients starting with targeted therapies were prospectively included in this study. TT- and LH-levels were sampled at start as well as during systemic therapy. Endpoints of the study were gonadal status (TT- and LH-levels) at start of targeted therapy and TT- and LH-evolution during targeted therapy...
May 18, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29774129/combined-abiraterone-acetate-plus-prednisone-salvage-prostate-bed-radiotherapy-and-lh-rh-agonists-carlha-gep12-in-biochemically-relapsing-prostate-cancer-patients-following-prostatectomy-a-phase-i-study-of-the-getug-gep
#11
Stéphane Supiot, Loic Campion, Pascal Pommier, Mélanie Dore, Clément Palpacuer, Séverine Racadot, Emmanuel Rio, Gérard A Milano, Céline Mahier-Ait Oukhatar, Christian Carrie
Background: To establish the maximum tolerated dose of abiraterone acetate plus prednisone (AA) combined with salvage radiotherapy (SRT) and goserelin in a phase 1 study in men with rising PSA following radical prostatectomy. Methods: AA was given during one month before SRT at 1000 mg PO once daily, then 750 mg (Dose Level 1, DL1) or 1000 mg (DL2) during 5 months combined with 6-months goserelin by injection on the first day of irradiation (scheme NEO) or one month before starting SRT (scheme CONCO)...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29772405/a-transcriptomic-comparison-of-theca-and-granulosa-cells-in-chicken-and-cattle-follicles-reveals-esr2-as-a-potential-regulator-of-cyp19a1-expression-in-the-theca-cells-of-chicken-follicles
#12
Ruoxi Jing, Lantao Gu, Jinqiu Li, Yanzhang Gong
Previous studies have shown that theca and granulosa cell layers in follicles do not play the same roles in mammals and birds, especially regarding the synthesis of estrogen. The functions of these two cell types have been well characterized in cattle, but they remain unclear in chickens. To clarify this issue, a comparison of small yellow follicles (SYFs) in chickens and cattle at different follicular development stages was done by weighted gene co-expression network analysis (WGCNA). The modules obtained from WGCNA were used for further identification of the key genes associated with CYP19A1 expression...
April 28, 2018: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29772257/conspecific-odor-exposure-predominantly-activates-non-kisspeptin-cells-in-the-medial-nucleus-of-the-amygdala
#13
Leandro Bueno Lima, Fernanda Tais Haubenthal, Marina Augusto Silveira, Tabata Mariz Bohlen, Martin Metzger, Jose Donato, Renata Frazao
A small neuronal subpopulation in the medial nucleus of the amygdala (MeA), expressing the Kiss1 gene, is now considered an important mediator that integrates socio-sexual behavior and odor information in order to modulate the Hypothalamic-Pituitary-Gonadal (HPG) axis. Previous studies demonstrated that exogenous kisspeptin administration or selective activation of Kiss1-expressing neurons in the MeA modulates the onset of puberty, LH secretion and sexual behavior. These functions are supported by the known MeA neuronal connections...
May 14, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29770370/alkyl-chain-elongation-and-acyl-group-effects-in-a-series-of-eu-tb-complexes-with-hexadentate-%C3%AF-electronic-skeletons-and-their-enhanced-luminescence-in-solutions
#14
Shuhei Ogata, Naoto Goto, Shoya Sakurai, Ayumi Ishii, Miho Hatanaka, Koushi Yoshihara, Ryota Tanabe, Kyosuke Kayano, Ryo Magaribuchi, Kenta Goto, Miki Hasegawa
Five Eu complexes with long alkyl chain groups, abbreviated as EuLCx ("x" indicates the number of methylene groups: x = 8, 12, 14, 18, and 22), were synthesized to evaluate their structural and luminescence properties in chloroform. The mother helicate Eu complex, EuL, which has two bipyridine moieties bridged by an ethylenediamine, has been previously reported. A reduced form in which the azomethine groups of L also coordinated to the Eu ion, EuLH, was newly prepared. EuLH also adopts a helicate molecular structure based on single crystal X-ray structural analysis...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770362/study-of-anti-m%C3%A3-llerian-hormone-levels-in-patients-with-myotonic-dystrophy-type-1-preliminary-results
#15
Manuela Ergoli, Massimo Venditti, Raffaele Dotolo, Esther Picillo, Sergio Minucci, Luisa Politano
Myotonic dystrophy type 1 is a multisystemic disorder characterized by myotonia, muscle weakness and involvement of several organs and apparatus such as heart, lungs, eye, brain and endocrine system. Hypogonadism and reproductive abnormalities are frequently reported. A progressive testicular atrophy occurs in about 80% in the affected males leading to Leydig cell hyperproliferation and elevated basal follicle stimulating hormone (FSH) levels. Anti-Müllerian hormone (AMH) - a dimeric glycoprotein belonging to the super-family of transforming grow factor beta (TGF-beta) - is the earliest Sertoli cell hormone secreted in males and, together with inhibin B and FSH, is an important indicator of Sertoli cell function...
December 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/29768628/androgen-insensitivity-syndrome-a-review
#16
Rafael Loch Batista, Elaine M Frade Costa, Andresa de Santi Rodrigues, Nathalia Lisboa Gomes, José Antonio Faria, Mirian Y Nishi, Ivo Jorge Prado Arnhold, Sorahia Domenice, Berenice Bilharinho de Mendonca
Androgenic insensitivity syndrome is the most common cause of disorders of sexual differentiation in 46,XY individuals. It results from alterations in the androgen receptor gene, leading to a frame of hormonal resistance, which may present clinically under 3 phenotypes: complete (CAIS), partial (PAIS) or mild (MAIS). The androgen receptor gene has 8 exons and 3 domains, and allelic variants in this gene occur in all domains and exons, regardless of phenotype, providing a poor genotype - phenotype correlation in this syndrome...
March 2018: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29766148/endogenous-luteinizing-hormone-concentration-and-ivf-outcome-during-ovarian-stimulation-in-fixed-versus-flexible-gnrh-antagonist-protocols-an-rct
#17
Raffaella Depalo, Paolo Trerotoli, Annarosa Chincoli, Margherita Patrizia Vacca, Giuseppina Lamanna, Ettore Cicinelli
Background: Luteinizing hormone (LH) is essential for normal follicular development and oocyte maturation. In particular, fluctuations of LH during the follicular phase have a significant impact on morphological and functional changes of the oocyte and determine its meiotic status and ability to be fertilized. Objective: This prospective randomized controlled trial examined effects of endogenous follicular phase LH levels on oocyte maturity and IVF outcomes in fixed vs...
March 2018: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29765521/long-term-deficiency-of-vitamin-d-in-germ-cell-testicular-cancer-survivors
#18
Lucia Nappi, Margaret Ottaviano, Pasquale Rescigno, Ladan Fazli, Martin E Gleave, Vincenzo Damiano, Sabino De Placido, Giovannella Palmieri
Background: Cisplatin-based chemotherapy significantly improved the survival of patients with germ cell testicular cancer. However, long term side effects of chemotherapy have non-negligible impact on the quality of life of these young patients, who have a long life expectancy after being successfully treated. Materials and Methods: 25-OH vitamin D, testosterone, FSH and LH of patients with testicular cancer were retrospectively evaluated and for each patient clinical information were collected...
April 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29763897/does-the-pituitary-gland-volume-change-in-polycystic-ovary-syndrome
#19
Sezen Bozkurt Koseoglu, Funda Dinc Elibol
AIMS: Polycystic ovary syndrome (PCOS) is the commonest cause of menstrual irregularity and hirsutism during reproductive age. We hypothesized in the alterations in the pituitary gland in PCOS. METHODS: We measured the volume of the pituitary gland in 39 PCOS patients and 42 age-matched healthy controls using 0.35 mm thick T1-weighted sagittal cranial images. Serum levels of estradiol (E2), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) were measured on days 3-5 of the menstrual cycle of the participants...
May 15, 2018: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/29762821/the-influencing-mechanism-of-mtor-signal-pathway-mediated-by-mitofusin-2-in-development-of-follicle
#20
Q-Y Luo, P Huo, L-L Wang, X-H Wu
OBJECTIVE: To investigate the influencing mechanism of mammalian target of rapamycin (mTOR) signal pathway mediated by mitofusin-2 (Mfn2) in the development of follicle. MATERIALS AND METHODS: We selected 20 healthy Sprague Dawley (SD) female rats aging between 6 and 8 weeks were divided into the control group and the polycystic ovarian syndrome (PCOS) model group. Rats in PCOS group received the lavage using 0.4 mL 1% carboxymethyl cellulose solution containing letrozole (1 mg/kg/d) consecutively for 20 to 25d...
April 2018: European Review for Medical and Pharmacological Sciences
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