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Prolactin

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https://www.readbyqxmd.com/read/28526958/-ectopic-suprasellar-type-iia-prl-secreting-pituitary-adenoma
#1
REVIEW
Heng-Jun Zhou, De-Sheng Pan, Xiao-Qun Ba, Ren-Ya Zhan, Xiu-Jue Zheng, Yue-Hui Ma
BACKGROUND: Ectopic pituitary adenomas (EPAs) are rare, and the suprasellar cistern seems to be the most common location. At this time, no detailed original classification, diagnosis, or treatment protocols for suprasellar pituitary adenomas (SPAs) have been described. CASE DESCRIPTION: A 19-year-old man showed visual disturbances and lack of libido for 3 years, he suffered a sharp decline in vision with only light perception in the last week. Magnetic resonance imaging scans revealed a large suprasellar cystic lesion with a normal pituitary in the sella turcica...
May 19, 2017: Pituitary
https://www.readbyqxmd.com/read/28523537/prolactinoma-management-predictors-of-remission-and-recurrence-after-dopamine-agonists-withdrawal
#2
Margarida Teixeira, Pedro Souteiro, Davide Carvalho
OBJECTIVE: Prolactinomas are the most common functional pituitary tumour. Dopamine agonists (DA) are its principal treatment. The criteria that should guide therapy withdrawal and the factors that influence disease remission or relapse are not yet fully established. Our purpose is to evaluate the proportion of patients who attempted DA withdrawal, and to identify the factors that influence clinicians to try it. In addition, we aim to study the factors that are involved in prolactinoma remission/relapse after therapy withdrawal...
May 18, 2017: Pituitary
https://www.readbyqxmd.com/read/28520590/role-of-tyrosine-kinase-inhibitors-in-the-treatment-of-pituitary-tumours-from-bench-to-bedside
#3
Anat Ben-Shlomo, Odelia Cooper
PURPOSE OF REVIEW: Treatment of aggressive pituitary tumours often yields suboptimal control of the tumour and confers significant morbidity. Lactotroph and corticotroph-derived tumours express ErbB receptors and ligands, and mutations in ubiquitin-specific protease 8 (USP8), which alters epidermal growth factor receptor (EGFR) degradation, have been implicated in Cushing disease pathogenesis. EGFR tyrosine kinase inhibitor (TKI) therapy has emerged as a potential new therapeutic approach for patients with aggressive prolactinomas and Cushing disease...
May 17, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28515460/chlamydia-trachomatis-infection-of-human-endometrial-stromal-cells-induces-defective-decidualisation-and-chemokine-release
#4
Sevi Giakoumelou, Nick Wheelhouse, Jeremy Brown, Jean Wade, Ioannis Simitsidellis, Douglas Gibson, Philippa T K Saunders, Patrick Horner, Gary Entrican, Sarah E M Howie, Andrew W Horne
Miscarriage affects ~20% of pregnancies and maternal infections account for ~15% of early miscarriages. Chlamydia trachomatis (Ct) has been associated with miscarriage but the underlying mechanisms are unknown. Successful implantation requires endometrial stromal cell (ESC) decidualisation. Maintenance of pregnancy requires angiogenesis, establishment of the correct cellular milieu and trophoblast invasion, all of which involve the action of chemokines. Our objective was to determine whether Ct infection impacts upon ESC decidualisation and chemokine secretion...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511899/signaling-pathways-to-and-from-the-hypophysial-pars-tuberalis-an-important-center-for-the-control-of-seasonal-rhythms
#5
REVIEW
Horst-Werner Korf
Seasonal (circannual) rhythms play an important role for the control of body functions (reproduction, metabolism, immune responses) in nearly all living organisms. Also humans are affected by the seasons with regard to immune responses and mental functions, the seasonal affective disorder being one of the most prominent examples. The hypophysial pars tuberalis (PT), an important interface between the hypophysial pars distalis and neuroendocrine centers in the brain, plays an essential role in the regulation of seasonal functions and may even be the seat of the circannual clock...
May 13, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28506283/prolactin-blocks-the-expression-of-receptor-activator-of-nuclear-factor-%C3%AE%C2%BAb-ligand-and-reduces-osteoclastogenesis-and-bone-loss-in-murine-inflammatory-arthritis
#6
Maria G Ledesma-Colunga, Norma Adán, Georgina Ortiz, Mariana Solís-Gutiérrez, Fernando López-Barrera, Gonzalo Martínez de la Escalera, Carmen Clapp
BACKGROUND: Prolactin (PRL) reduces joint inflammation, pannus formation, and bone destruction in rats with polyarticular adjuvant-induced arthritis (AIA). Here, we investigate the mechanism of PRL protection against bone loss in AIA and in monoarticular AIA (MAIA). METHODS: Joint inflammation, trabecular bone loss, and osteoclastogenesis were evaluated in rats with AIA treated with PRL (via osmotic minipumps) and in mice with MAIA that were null (Prlr-/-) or not (Prlr+/+) for the PRL receptor...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28504504/-cornelia-de-lange-syndrome-and-multiple-hormonal-deficiency-an-unusual-association-clinical-case
#7
Víctor M Mora-Bautista, Víctor Mendoza-Rojas, Gustavo A Contreras-García
Cornelia de Lange syndrome is a genetic disease characterized by distinctive facial features, failure to thrive, microcephaly and several malformations associated. Its main endocrinological features are anomalies of the genitalia. We present a 13-year-old boy, who suffered from complicated aspiration pneumonia and showed Cornelia de Lange syndrome phenotype, with global developmental delay, suction-swallowing abnormalities, short stature and abnormal genitalia associated. His bone age was delayed, so he underwent full endocrinological panel...
June 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28501857/combined-treatment-with-artesunate-and-bromocriptine-has-synergistic-anticancer-effects-in-pituitary-adenoma-cell-lines
#8
Xin Wang, Qiu Du, Zhigang Mao, Xiang Fan, Bin Hu, Zhen Wang, Zhiyong Chen, Xiaobing Jiang, Zongming Wang, Ni Lei, Haijun Wang, Yonghong Zhu
Prolactinomas are the most prevalent functional pituitary adenomas. The preferred treatments for prolactinomas are dopamine agonists (DAs) such as bromocriptine (BRC), but DAs still have the challenges of tumor recurrence and drug resistance. This study demonstrates that the synergy of function and mechanism between artesunate (ART) and BRC inhibits prolactinoma cell growth in vitro. We found that low-dose ART combined with BRC synergistically inhibited the growth of GH3 and MMQ cell lines, caused cell death, attenuated cell migration and invasion, and suppressed the expression of extracellular prolactin...
April 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/28501406/effect-of-inhibiting-the-lactogenic-signal-at-calving-on-milk-production-and-metabolic-and-immune-perturbations-in-dairy-cows
#9
N Vanacker, S Ollier, F Beaudoin, R Blouin, P Lacasse
During the periparturient period, the abrupt increase in energy demand for milk production often induces metabolic and immunological disturbances in dairy cows. Our previous work has shown that reducing milk output by milking once a day or incompletely in the first few days of lactation reduces these disturbances. The aim of this study was to reduce metabolic and immunological disturbances by limiting milk production during the first week of lactation by inhibiting the lactogenic signal driven by prolactin...
May 10, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28500826/serum-kisspeptin-concentrations-are-negatively-correlated-with-body-mass-index-in-adolescents-with-anorexia-nervosa-and-amenorrhea
#10
Flora Bacopoulou, George I Lambrou, Maria-Evangelia Rodanaki, Evgenia Stergioti, Vasiliki Efthymiou, Efthymios Deligeoroglou, Sophia I Markantonis
OBJECTIVE: To measure, for the first time, serum kisspeptin concentrations in adolescent females with anorexia nervosa (AN) and associated amenorrhea, and investigate potential correlations of kisspeptin with anthropometric, bone and hormonal data. DESIGN: Setting: University Adolescent Medicine Center. PARTICIPANTS: Females aged 12-20 years with typical or atypical AN (based on DSM-5 diagnostic criteria) and controls. INTERVENTIONS: Measurement of body mass index (BMI), whole body/lumbar spine bone mineral density and serum concentrations of kisspeptin, follicle stimulating hormone, luteinizing hormone (LH), prolactin (PRL), thyroid stimulating hormone (TSH), free thyroxine, triiodothyronine, estradiol (E2), 17-hydroxyprogesterone...
January 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28499525/consecutive-cyproterone-acetate-and-estradiol-treatment-in-late-pubertal-transgender-female-adolescents
#11
Lloyd J W Tack, Robin Heyse, Margarita Craen, Karlien Dhondt, Heidi Vanden Bossche, Jolien Laridaen, Martine Cools
BACKGROUND: Cyproterone acetate (CA) is an antiandrogenic progestin commonly used in adult transwomen to suppress endogenous androgens, often in combination with estrogens to induce feminization. AIM: To assess the (side) effects and biochemical changes of CA alone and in combination with estrogens in adolescent trans-girls. METHODS: This study was a retrospective analysis of clinical and biochemical data from 27 trans-girls who presented at Tanner stage G4 and were treated with CA monotherapy for at least 6 months (mean = 12 months) and then in combination with incremental doses of estrogens (CA + E; mean = 16 months)...
May 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28498971/deletion-of-rhoa-in-progesterone-receptor-expressing-cells-leads-to-luteal-insufficiency-and-infertility-in-female-mice
#12
Ahmed E El Zowalaty, Rong Li, Yi Zheng, John P Lydon, Francesco J DeMayo, Xiaoqin Ye
RhoA is widely expressed throughout the female reproductive system. To assess its role in progesterone receptor (Pgr) expressing cells, we generated RhoA conditional knockout mice RhoAd/d (RhoAf/f-Pgr-Cre+/-). RhoAd/d females had comparable mating activity, serum LH, prolactin, and estradiol levels and ovulation with control but were infertile with progesterone insufficiency, indicating impaired steroidogenesis in RhoAd/d corpus luteum (CL). RhoA was highly expressed in wild type luteal cells and conditionally deleted in RhoAd/d CL...
May 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28494174/human-endometrial-stromal-cell-plasticity-reversible-sflt1-expression-negatively-coincides-with-decidualization
#13
Hanh N Cottrell, JuanJuan Wu, Bassam H Rimawi, Juan Manuel Duran, Jessica B Spencer, Neil Sidell, Augustine Rajakumar
Preeclampsia (PE) is a major complication of pregnancy in which the placenta is known to have shallow implantation into the uterine decidua. Studies have implicated soluble fms-like tyrosine kinase-1 (sFlt1), a soluble vascular endothelial growth factor (VEGF) receptor protein, in the pathogenesis of PE. sFlt1 has the ability to bind to and neutralize the angiogenic functions of VEGF and placental growth factor (PlGF). The presence of sFlt1 and its action in the endometrium is yet to be determined. We hypothesize that endometrial stromal cells (ESC) at the maternal-fetal interface may play a role in sFlt-1 regulation during pregnancy...
May 11, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28492802/gonadotrophic-prolactin-corticosterone-and-gonadal-hormones-levels-over-15-months-in-giant-amazon-river-turtles-podocnemis-expansa-schweigger-1812-testudines-podocnemididae-in-captive-conditions
#14
G E Freneau, V A Sá, C R Franci, D Vieira, B N Freneau
In order to achieve successful captive breeding the Podocnemis expansa, it is necessary to study their reproductive endocrinology. The purpose of this research was to evaluate and characterize plasma concentrations in gonadotrophic, gonadic, corticosterone and prolactin hormones from Giant Amazon Turtles under captive conditions. Blood samples were collected over a 15 month period. The samples were assayed by the use of radioimmunoassay, prolactin, corticosterone, LH, FSH, testosterone, 17β-estradiol and progesterone...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28492006/evaluation-of-prolactin-levels-in-patients-with-newly-diagnosed-pemphigus-vulgaris-and-its-correlation-with-pemphigus-disease-area-index
#15
Vahideh Lajevardi, Zahra Hallaji, Maryam Daneshpazhooh, Narges Ghandi, Peyman Shekari, Sepideh Khani
BACKGROUND: Prolactin is a hormone; in addition to it known roles, it has immunomodulatory effects on lymphocytes maturation and immunoglobulins production. Hyperprolactinemia has been demonstrated in various autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, type I diabetes mellitus, and Graves' disease. In view of the prolactin immunomodulatory roles, studying prolactin levels in pemphigus as an autoimmune blistering disease may introduce new ways of understanding disease etiology and developing treatment strategies...
June 2016: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28490208/plasma-kisspeptin-levels-in-lactational-amenorrhea
#16
Masato Kotani, Fumihiko Katagiri, Tsuyoshi Hirai, Jiro Kagawa, Issei Tanaka
The kisspeptin is a neuropeptide to play physiological roles in regulating gonadotropin-releasing hormone secretion in the hypothalamus. In human plasma, the kisspeptin concentration is measured, but gonadotropin-releasing hormone is not. This study aims to understand the physiological roles of the circulating kisspeptin in lactational amenorrhea in humans because prolactin reduces the kisspeptin expression and luteinizing hormone secretion resulting in anovulations in rodent brains. Plasma kisspeptin levels were measured in 11 subjects in lactational amenorrhea and in four cases with pathological amenorrhea by different etiologies for comparison using the enzyme immunoassay specific for human kisspeptin...
May 11, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28483703/next-generation-sequencing-analysis-of-soy-glyceollins-and-17-%C3%AE-estradiol-effects-on-transcript-abundance-in-the-female-mouse-brain
#17
REVIEW
Sanaya F Bamji, Eric Rouchka, Yan Zhang, Xiaohong Li, Ted Kalbfleisch, Cynthia Corbitt
Glyceollins (Glys) are produced by soy plants in response to stress and are known for their anti-estrogenic activity both in vivo and in vitro in cancer cell lines as well as peripheral tissues. Glys can also exhibit non-estrogen receptor (ER) mediated effects. The effects of Glys on gene expression in the brain are still unclear. For this study, 17-β estradiol (E2) or placebo slow-release pellets were implanted into ovariectomized CFW mice followed by 11 days of exposure to either Glys or vehicle i.p. injections...
May 5, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28480767/evaluation-of-tumor-necrosis-factor-alpha-serum-level-in-obese-and-lean-women-with-clomiphene-citrate-resistant-polycystic-ovary-disease
#18
Emaduldin Seyam, Momen Hasan, Eissa M Khalifa, Ahmad Ramadan, Enas Hefzy
OBJECTIVE: The aim of this work was to investigate the level of the serum level of tumor necrosis factor alpha (TNF-α) as an inflammatory biomarker in lean and obese women with polycystic ovary disease (PCOD), who are resistant to clomiphene citrate (CCR-PCOD). PATIENTS AND DESIGN: It is a case-controlled study, where 150 (n = 150) PCOD women (study group), who are resistant to clomiphene citrate (CCR-PCOD) had been recruited, in addition to 100 (n = 100) women with PCOD, who are not resistant to clomiphene citrate (NCCR-PCOD) as the first control group, and another 100 women (n = 100) fertile women with normal reproductive health, as the second control group...
May 8, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28479763/microdissection-testicular-sperm-extraction-in-men-with-nonobstructive-azoospermia-experience-of-king-saud-university-medical-city-riyadh-saudi-arabia
#19
Saleh Binsaleh, Dulaim Alhajeri, Khaled Madbouly
OBJECTIVES: Microdissection testicular sperm extraction (micro-TESE) is an optimal technique of sperm extraction for intracytoplasmic sperm injection. This study is to present our experience in micro-TESE and evaluate the relation of its sperm retrieval rate (SRR) with patients' characteristics, testicular functions, and histological parameters as well as previous sperm retrieval interventions. MATERIALS AND METHODS: We retrospectively reviewed records of 255 patients with nonobstructive azoospermia who underwent micro-TESE between 2011 and 2014...
April 2017: Urology Annals
https://www.readbyqxmd.com/read/28478771/evaluation-of-the-long-term-safety-and-tolerability-of-cariprazine-in-patients-with-schizophrenia-results-from-a-1-year-open-label-study
#20
Andrew J Cutler, Suresh Durgam, Yao Wang, Raffaele Migliore, Kaifeng Lu, István Laszlovszky, György Németh
OBJECTIVE: Cariprazine, a dopamine D3/D2 partial agonist atypical antipsychotic with preferential binding to D3 receptors, is approved for the treatment of schizophrenia and manic or mixed episodes associated with bipolar I disorder. The efficacy and safety of cariprazine was established in three randomized, double-blind, placebo-controlled, 6-week trials in patients with acute exacerbation of schizophrenia. This 53-week study evaluated the long-term safety and tolerability of cariprazine in patients with schizophrenia...
May 8, 2017: CNS Spectrums
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