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https://www.readbyqxmd.com/read/29207253/influence-of-postnatal-prolactin-modulation-on-the-development-and-maturation-of-ventral-prostate-in-young-rats
#1
Ana C L Camargo, Flávia B Constantino, Sérgio A A Santos, Ketlin T Colombelli, Maeli Dal-Pai-Silva, Sérgio L Felisbino, Luis A Justulin
Besides androgenic dependence, other hormones also influence the prostate biology. Prolactin has been described as an important hormone associated with maintenance of prostatic morphophysiology; however, there is a lack of information on the involvement of prolactin during prostate development and growth. This study aimed to evaluate whether perinatal prolactin modulation interferes with rat ventral prostate (VP) development and maturation. Therefore, prolactin or bromocriptine (an inhibitor of prolactin release from the pituitary) were administered to Sprague Dawley rats from postnatal Day (PND) 12 to PND 21 or 35...
December 6, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29187947/macroprolactinemia-and-empty-sella-syndrome
#2
Ach Taieb, Kacem Njah Maha, Yosra Hasni El Abed, Amel Maaroufi Beizig, Molka Chaieb Chadli, Koussay Ach
Macroprolactinemia is a polymeric form of prolactin-release, causing mildly symptomatic clinical pictures. The former can be isolated or associated with other causes of hyperprolactinemia. The association with an empty sella syndrome is rare. We report a case of a female patient discovered with this association. It's about a female patient 47 years old, followed up since the age of 31 years for bilateral galactorrhea and a spaniomenorrhea. There has been no associated drug intake. Her exploration has showed a serum prolactin level of 635 mIU/L...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29166618/ipsc-based-compound-screening-and-in%C3%A2-vitro-trials-identify-a-synergistic-anti-amyloid-%C3%AE-combination-for-alzheimer-s-disease
#3
Takayuki Kondo, Keiko Imamura, Misato Funayama, Kayoko Tsukita, Michiyo Miyake, Akira Ohta, Knut Woltjen, Masato Nakagawa, Takashi Asada, Tetsuaki Arai, Shinobu Kawakatsu, Yuishin Izumi, Ryuji Kaji, Nobuhisa Iwata, Haruhisa Inoue
In the process of drug development, in vitro studies do not always adequately predict human-specific drug responsiveness in clinical trials. Here, we applied the advantage of human iPSC-derived neurons, which offer human-specific drug responsiveness, to screen and evaluate therapeutic candidates for Alzheimer's disease (AD). Using AD patient neurons with nearly 100% purity from iPSCs, we established a robust and reproducible assay for amyloid β peptide (Aβ), a pathogenic molecule in AD, and screened a pharmaceutical compound library...
November 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/29162627/a-therapeutic-combination-of-gpcr-modulators-that-protects-photoreceptors-from-degeneration
#4
Tivadar Orban, Henri Leinonen, Tamar Getter, Zhiqian Dong, Wenyu Sun, Songqi Gao, Alexander Veenstra, Hossein Heidari-Torkabadi, Timothy S Kern, Philip D Kiser, Krzysztof Palczewski
Degeneration of retinal photoreceptor cells can arise from environmental and/or genetic causes. Since photoreceptor cells, the retinal pigment epithelium (RPE), neurons and glial cells of the retina are intimately associated; all cell types eventually are affected by retinal degenerative diseases. Such diseases often originate either in rod and/or cone photoreceptor cells or the RPE. Of these, cone cells located in the central retina are especially important for daily human activity. Here we describe the protection of cone cells by a combination therapy consisting of the G protein-coupled receptor modulators metoprolol, tamsulosin, and bromocriptine...
November 21, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29152289/chronic-cluster-like-headache-in-a-patient-with-a-macroprolactinoma-presenting-with-falsely-low-prolactin-levels-bromocriptine-versus-cabergoline
#5
Maria M Pineyro, Gabriela Sosa, Maria R Finozzi, Natalia Stecker, Raul Pisabarro, Maria C Belzarena
Cluster-like headache may be associated with pituitary tumors, mostly prolactinomas. Pituitary imaging and prolactin measurement should be assessed in patients presenting with cluster-like headaches with atypical features or unsatisfactory response to treatment. Furthermore, large pituitary adenomas with moderate increase in prolactin levels should prompt prolactin dilutions to avoid "hook effect".
November 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29137945/the-effects-of-local-microinjection-of-selective-dopamine-d1-and-d2-receptor-agonists-and-antagonists-into-the-dorsal-raphe-nucleus-on-sleep-and-wakefulness-in-the-rat
#6
Jaime M Monti, Héctor Jantos
The effects of the dopamine (DA) D1 and D2 receptor agonists SKF38393, bromocriptine and quinpirole, respectively, on spontaneous sleep were analyzed in adult rats prepared for chronic sleep recordings. Local administration of the DAergic agonists into the dorsal raphe nucleus (DRN) during the light phase of the light-dark cycle induced a significant reduction of rapid-eye movement sleep (REMS) and the number of REM periods. Additionally, bromocriptine and quinpirole significantly increased wakefulness (W)...
November 11, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29120551/current-medical-strategies-in-the-prevention-of-ovarian-hyperstimulation-syndrome
#7
Miro Kasum, Slavko Orešković, Daniela Franulić, Ermin Čehić, Albert Lila, Goran Vujić, Franjo Grgić
The purpose of this review is to analyze current medical strategies in the prevention of ovarian hyperstimulation syndrome (OHSS) during ovarian stimulation for in vitro fertilization. Owing to contemporary preventive measures of OHSS, the incidence of moderate and severe forms of the syndrome varies between 0.18% and 1.40%. Although none of medical strategies is completely effective, there is high-quality evidence that replacing human chorionic gonadotropin (hCG) by gonadotropin-releasing hormone (GnRH) agonists after GnRH antagonists and moderate- quality evidence that GnRH antagonist protocols, dopamine agonists and mild protocols reduce the occurrence of OHSS...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29114287/unruptured-internal-carotid-artery-aneurysm-associated-with-functional-pituitary-adenoma-a-true-association
#8
Guru Dutta Satyarthee, Amol Raheja
Detection of incidental intracranial aneurysm on neuroimaging can be associated with pituitary adenoma; however, such association is extremely rare. However, aneurysm with extension into the sella is extremely rare, and increases the risk of inadvertent intraoperative rupture, if trans-sphenoidal decompression is attempted either using endoscopic or microscopic surgical approach. Hanak et al. in a literature review of intrasellar noniatrogenic aneurysms over PubMed search in 2012 could only collect 31 studies, of which only eight cases had pituitary adenoma associated with aneurysm extending into sella...
October 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29112770/interactive-effects-of-morphine-and-dopamine-receptor-agonists-on-spatial-recognition-memory-in-mice
#9
Yanmei Chen, Yu Fu, Yingjie Ann, Jianhong Wang, Jichuan Zhang
Both opiates and dopamine play important roles in learning and memory. Although synergistic action between these two neurotransmitters has been found, their functional roles remain unclear. Here, low dose morphine (2.5 mg/kg) and low dose dopamine receptor agonists (apomorphine: 0.05 mg/kg; SKF38393: 0.01 mg/kg; bromocriptine: 0.05 mg/kg), which have no effects on spatial recognition memory, were injected intraperitoneally into mice 30 min before a memory test in a two-trial recognition Y-maze. The Y-maze is based on the innate tendency of rodents to explore novel environments and is therefore suitable for exploring the effects of morphine on learning and memory...
November 7, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29103345/placental-transfer-of-bromocriptine-in-an-ex-vivo-human-placental-perfusion-model
#10
Qiaoling Zheng, Qiong Zhou, Juan Li, Yuqin Tian, Hua Huang, Qin Yao, Jingjing Wang, Jun Zhang
PURPOSE: To determine the rate and extent of maternal-fetal transplacental passage of bromocriptine in the dually perfused human placental model. METHODS: Twenty term placentas were included in an ex vivo human placental perfusion experiment with a closed circuit model. At the start of the perfusion, bromocriptine at the concentration of 10 or 100 ng/mL along with 100 µg/mL antipyrine which used as a positive marker were added to the maternal reservoir. Samples were collected for the measurements of bromocriptine and markers of placental viability both from the maternal reservoir and fetal reservoir throughout the perfusion which lasted for 3 h...
November 5, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29102970/cabergoline-induced-fibrosis-of-prolactinomas-a-neurosurgical-perspective
#11
Niraj Mohan, Yi Yan Chia, Giap Hean Goh, Eric Ting, Kejia Teo, Tseng Tsai Yeo
Presently, the standard of care for prolactinomas, a type of pituitary adenoma, is dopaminergic agents such as bromocriptine and cabergoline. However, dopaminergic agents may induce fibrosis of cardiac valves leading to valvular insufficiency, necessitating surgical treatment of prolactinoma. Fibrosis of prolactinoma can be induced by prolonged medical treatment with bromocriptine, and this usually occurs after years of treatment. In comparison to bromocriptine, there have been no reports of cabergoline-induced fibrosis of prolactinoma...
November 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29100412/the-therapeutic-effect-of-bromocriptine-in-combination-with-spironolactone-in-patients-with-primary-aldosteronism-a-hypothesis-generating-pilot-study
#12
Vin-Cent Wu, Che-Hsiung Wu, Ya-Wen Yang, Kuo-How Huang, Chia-Hui Chang, Shao-Yu Yang, Yen-Hung Lin, Kwan-Dun Wu
Background: Dopamine D2-like receptors are attenuated in aldosterone producing adenoma, lead to overproduction of aldosterone in affected patients, and thus reported to serve as a potential treatment target for primary aldosteronism. The D2 dopamine receptor agonist bromocriptine has been used clinically for reducing tumor mass of pituitary adenomas of lactotroph origin. The aim of the present study was to assess the efficacy of adding bromocriptine to spironolactone in the biochemical control of primary aldosteronism...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29092962/multiple-endocrine-neoplasia-type-1-presenting-with-refractory-seizures
#13
Banshi Lal Kumawat, Chandramohan Sharma, Mohit Janakkumar Shah, Maulik Panchal
We report a case of 29-year-old woman referred to us for management of refractory epilepsy. Under observation, she was detected to have recurrent hypoglycaemia during the episodes of seizures. On investigation, she was found to have hyperinsulinemic hypoglycaemia. Her triple-phase CT scan of abdomen showed neuroendocrine tumour of pancreatic head, with bilateral renal calculi. Screening of other endocrine glands revealed pituitary microadenoma and parathyroid adenoma on imaging, which was also supported by biochemical and hormonal profile...
November 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29072514/effectiveness-of-matricaria-chamomilla-chamomile-extract-on-pain-control-of-cyclic-mastalgia-a-double-blind-randomised-controlled-trial
#14
N Saghafi, H Rhkhshandeh, N Pourmoghadam, L Pourali, M Ghazanfarpour, A Behrooznia, F Vafisani
Breast pain (mastalgia) often precedes menstrual period, which is of mild to moderate severity. This study was performed to determine the effectiveness of chamomile on pain control of cyclic mastalgia. This double-blind randomised controlled clinical trial was conducted on 60 patients with mastalgia referred to the breast clinic of an academic hospital, Mashhad University of Medical Sciences. The patients were randomly allocated into two groups: chamomile (n = 30) and placebo (n = 30). Primary outcomes were: (1) assessment of the visual analogue scale (VAS) and (2) assessment of the breast pain chart (BPC) 8 weeks after initial intervention...
October 26, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29053801/parathyroid-hormone-related-protein-induced-hypercalcemia-of-pregnancy-successfully-reversed-by-a-dopamine-agonist
#15
Elizabeth M Winter, Natasha M Appelman-Dijkstra
Context: Parathyroid hormone related protein (PTH-rP) induced hypercalcemia or pseudophyperparathyroidism during pregnancy is a condition that can result in serious foetal and maternal complications. Among others, breast tissue might be the cause of this PTH-rP production, in which case medical treatment is possible, as we describe in this case. Setting: A 32-year old woman presented in the15th week of pregnancy with massive enlargement of breasts and abdominal pain due to severe hypercalcemia, hypercalciuria and suppressed PTH...
October 18, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29043560/optimal-timing-of-dopamine-agonist-withdrawal-in-patients-with-hyperprolactinemia-a-systematic-review-and-meta-analysis
#16
Miao Yun Xia, Xiao Hui Lou, Shao Jian Lin, Zhe Bao Wu
PURPOSE: Dopamine agonists (DAs) are recommended as first-line treatment for patients with hyperprolactinemia. Generally, it is accepted that patients with hyperprolactinemia do not need lifelong medication, but the optimal timing for DA withdrawal has not been determined. The aim of this systematic review and meta-analysis is to assess the impact of DA withdrawal on the clinical outcomes of patients with hyperprolactinemia, and to explore possible factors affecting successful DA withdrawal...
October 17, 2017: Endocrine
https://www.readbyqxmd.com/read/29039523/analysis-of-men1-c-482g-a-p-gly161asp-mutation-in-a-pedigree-with-familial-multiple-endocrine-neoplasia-type-1
#17
Yuanyuan Luo, Yongxiang Sun, Xiaofan Zhu, Xialian Li
Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disorder characterized by the development of neuroendocrine tumors, which in turn are caused by mutations in the MEN1 gene. In the present study, a case of a 46‑year‑old woman who was clinically diagnosed with MEN1 based on the presence of prolactinoma and bilateral parathyroid adenoma was reported. The patient's serum prolactin (PRL) levels were successfully controlled via bromocriptine therapy, and the serum levels of calcium and intact parathyroid hormone (PTH) reduced one day following parathyroidectomy...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29026773/neuroleptic-malignant-syndrome-in-a-patient-with-stable-dose-of-olanzapine
#18
Manoj Kumar Sahoo, Sangita Kamath, Abhijeet Sharan
Neuroleptic malignant syndrome (NMS), a potentially fatal consequence due to typical neuroleptics, has been described so far. In the past few years, there has been increased use of atypical antipsychotic drugs. Cases of NMS related to atypical neuroleptics, such as olanzapine, are less common in spite of increasing cases reported in literatures. Here, we report a case of NMS in a patient with bipolar affective disorder on maintenance treatment with 5 mg olanzapine for the last 7 year. He was successfully treated with bromocriptine and discharged in stable condition in 10 days...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28990837/quercetin-nanoparticles-alter-pharmacokinetics-of-bromocriptine-reflecting-its-enhanced-inhibitory-action-on-liver-and-intestinal-cyp-3a-enzymes-in-rats
#19
Suresh Palle, Prasad Neerati
1. Quercetin is a dietary flavonoid has extremely low water solubility and found to possess CYP3A inhibitory activity. The purpose of the present study was to evaluate the effect of quercetin and quercetin nanoparticles (NQC) on the pharmacokinetics of bromocriptine (BRO) in rats. 2. NQC prepared by antisolvent precipitation method and characterized by SEM and dissolution test. The following methods were used in this study i.e. in vitro liver and intestinal CYP3A microsomal activity and in vitro non-everted sac method...
October 9, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28988314/the-prostate-response-to-prolactin-modulation-in-adult-castrated-rats-subjected-to-testosterone-replacement
#20
Flávia B Constantino, Ana C L Camargo, Sérgio A A Santos, Ketlin T Colombelli, Laura F Martin, Marcia G Silva, Sérgio L Felisbino, Luis A Justulin
Despite the androgenic dependence, other hormones, growth factors, and cytokines are necessary to support prostatic growth and maintain the glandular structure; among them, prolactin is a non-steroidal hormone secreted mainly by the pituitary gland. However, extra-pituitary expression of prolactin, such as in the prostate, has also been demonstrated, highlighting the paracrine and autocrine actions of prolactin within the prostate. Here, we investigated whether prolactin modulation alters ventral prostate (VP) morphophysiology in adult castrated rats...
December 2017: Journal of Molecular Histology
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