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https://www.readbyqxmd.com/read/28203372/diagnostic-challenges-and-management-of-a-patient-with-acromegaly-due-to-ectopic-growth-hormone-releasing-hormone-secretion-from-a-bronchial-carcinoid-tumour
#1
Nikolaos Kyriakakis, Jacqueline Trouillas, Mary N Dang, Julie Lynch, Paul Belchetz, Márta Korbonits, Robert D Murray
: A male patient presented at the age of 30 with classic clinical features of acromegaly and was found to have elevated growth hormone levels, not suppressing during an oral glucose tolerance test. His acromegaly was originally considered to be of pituitary origin, based on a CT scan, which was interpreted as showing a pituitary macroadenoma. Despite two trans-sphenoidal surgeries, cranial radiotherapy and periods of treatment with bromocriptine and octreotide, his acromegaly remained active clinically and biochemically...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28202786/dopamine-modulates-adaptive-prediction-error-coding-in-the-human-midbrain-and-striatum
#2
Kelly M J Diederen, Hisham Ziauddeen, Martin D Vestergaard, Tom Spencer, Wolfram Schultz, Paul C Fletcher
Learning to optimally predict rewards requires agents to account for fluctuations in reward value. Recent work suggests that individuals can efficiently learn about variable rewards through adaptation of the learning rate, and coding of prediction errors relative to reward variability. Such adaptive coding has been linked to midbrain dopamine neurons in nonhuman primates, and evidence in support for a similar role of the dopaminergic system in humans is emerging from fMRI data. Here, we sought to investigate the effect of dopaminergic perturbations on adaptive prediction error coding in humans, using a between-subject, placebo-controlled pharmacological fMRI study with a dopaminergic agonist (bromocriptine) and antagonist (sulpiride)...
February 15, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28185815/novel-antiviral-activity-and-mechanism-of-bromocriptine-as-a-zika-virus-ns2b-ns3-protease-inhibitor
#3
Jasper Fuk-Woo Chan, Kenn Ka-Heng Chik, Shuofeng Yuan, Cyril Chik-Yan Yip, Zheng Zhu, Kah-Meng Tee, Jessica Oi-Ling Tsang, Chris Chung-Sing Chan, Vincent Kwok-Man Poon, Gang Lu, Anna Jinxia Zhang, Kin-Kui Lai, Kwok-Hung Chan, Richard Yi-Tsun Kao, Kwok-Yung Yuen
Zika virus (ZIKV) infection is associated with congenital malformations in infected fetuses and severe neurological and other systemic complications in adults. There are currently limited anti-ZIKV treatment options that are readily available and safe for use in pregnancy. In this drug repurposing study, bromocriptine was found to have inhibitory effects on ZIKV replication in cytopathic effect inhibition, virus yield reduction, and plaque reduction assays. Time-of-drug-addition assay showed that bromocriptine exerted anti-ZIKV activity between 0 and 12 h post-ZIKV inoculation, corroborating with post-entry events in the virus replication cycle prior to budding...
February 6, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28170483/diagnosis-and-treatment-of-pituitary-adenomas-a-review
#4
Mark E Molitch
Importance: Pituitary adenomas may hypersecrete hormones or cause mass effects. Therefore, early diagnosis and treatment are important. Observations: Prevalence of pituitary adenomas ranges from 1 in 865 adults to 1 in 2688 adults. Approximately 50% are microadenomas (<10 mm); the remainder are macroadenomas (≥10 mm). Mass effects cause headache, hypopituitarism, and visual field defects. Treatments include transsphenoidal surgery, medical therapies, and radiotherapy...
February 7, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28145933/an-economic-analysis-of-bromocriptine-versus-trans-sphenoidal-surgery-for-the-treatment-of-prolactinoma
#5
Lian Duan, Hua Yan, Minqiang Huang, Yuhui Zhang, Feng Gu
Prolactinomas account for ∼40% of all pituitary adenomas and are important causes of infertility and gonadal dysfunction. In general, most prolactinomas are treated medically with dopaminergic agonists, while surgery is reserved for patients intolerant or nonresponsive to these medications. The aim of this study was to carry out a comparative analysis of the cost-effectiveness of medical therapy with bromocriptine and surgical therapy with trans-sphenoidal surgery. A Markov model was developed based on retrospective data from 126 patients with prolactinoma treated in our hospital between October 2008 and May 2009, and from data published previously...
January 31, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28137551/bromocriptine-induces-autophagy-dependent-cell-death-in-pituitary-adenomas
#6
Xin Geng, Lixin Ma, Zefu Li, Zhenzhu Li, Jianmin Li, Meng Li, Qingbo Wang, Zheng Chen, Qikai Sun
BACKGROUND: Bromocriptine(BRC) is effective in patients with prolactinoma. However, the cytotoxic mechanism of BRC remains unknown. METHODS: Slices for immunohistochemical pathology were randomly selected from 37 paraffin-embedded prolactinoma tissue sections. LC3 was detected by immunohistochemistry. GH3 and MMQ cells were treated by BRC and/or rapamycin (RAPA). Cell viability and the cell cycle were measured by CCK-8 and flow cytometry, respectively. ELISA measured prolactin secretion...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28130617/prolactin-has-a-pathogenic-role-in-systemic-lupus-erythematosus
#7
Luis J Jara, Gabriela Medina, Miguel A Saavedra, Olga Vera-Lastra, Honorio Torres-Aguilar, Carmen Navarro, Monica Vazquez Del Mercado, Luis R Espinoza
Prolactin, a 23-kDa peptide hormone, is produced by the anterior pituitary gland and extrapituitary sites including the immune cells. Prolactin (PRL) participates in innate and adaptive immune response. PRL stimulates the immune cells by binding to receptor (PRL-R). Binding of PRL to its receptor activates the Janus kinase-signal transducer (JAK-STAT). Activation of these cascades results in endpoints such as immunoestimulator and immunosupressor action. Prolactin belongs to the network of immune-neuroendocrine interaction...
January 28, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28103649/amlodipine-an-l-type-calcium-channel-blocker-protects-against-chlorpromazine-induced-neurobehavioural-deficits-in-mice
#8
Oluwafemi E Kale, Olufunsho Awodele, Temitope O Ogundare, Martins Ekor
The present study investigated the modulatory and chemopreventive benefit of amlodipine (AML), a dihydropyridine calcium channel antagonist, against neurobehavioural abnormalities (NAs) associated with chlorpromazine (CPZ) toxicity in mice. Adult mice were divided into five groups of 6 animals/group. Group 1 (control) was administered saline (10 ml/kg i.p.). Group 2 received CPZ (2 mg/kg i.p.). Groups 3 and 4 received bromocriptine (BMC, 2.5 mg/kg s.c.) and AML (1 mg/kg s.c.) respectively while group 5 received their combination...
January 19, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28097882/antidiabetic-agents-and-cardiovascular-outcomes-in-patients-with-heart-diseases
#9
Judy W M Cheng, Hisham A Badreldin, Dhiren K Patel, Snehal H Bhatt
This article reviews evidence of benefits and risk of antidiabetic agents in cardiovascular (CV) outcomes, with a focus on medications approved by the FDA since 2008. Peer-reviewed articles were identified from MEDLINE and Current Content database (both 1966 to October 1, 2016) using the search terms insulin, metformin, rosiglitazone, pioglitazone, glyburide, glipizide, glimepiride, acarbose, miglitol, albiglutide, exenatide, liraglutide, lixisenatide, dulaglutide, pramlintide, meglitinide, alogliptin, linagliptin, saxagliptin, sitagliptin, canagliflozin, dapagliflozin, empagliflozin, colesevalam, bromocriptine, mortality, myocardial infarction (MI), heart failure, (HF) and stroke...
January 18, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28075000/-bromocriptine-could-it-be-the-cure-for-post-surgical-akinetic-mutism
#10
A Arevalo-Saenz, M Pedrosa-Sanchez, R G Sola
INTRODUCTION: Akinetic mutism is considered as an alteration of the motivational state of the person, which the patient is unable to initiate verbal or motor responses voluntary, even with preserved sensorimotor and surveillance functions. CASE REPORT: A 43 year-old male involved in a cerebellum arteriovenous fistula complicated with hydrocephalus, who responded dramatically to treatment with bromocriptine. CONCLUSION: Typically, akinetic mutism is described as a transient surgeries posterior fossa...
January 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28073129/alternative-treatment-strategies-in-women-poorly-tolerating-moderate-doses-of-bromocriptine
#11
Robert Krysiak, Witold Szkróbka, Bogusław Okopień
Background: Metformin as well as dopaminergic agents exert a beneficial effect on glucose and lipid metabolism, often impaired in patients with hyperprolactinemia. Objective: The aim of this study was to compare metabolic- and prolactin-lowering effects of low-dose bromocriptine/metformin combination therapy and cabergoline in patients with elevated prolactin levels. Methods: The study included 27 women with hyperprolactinemia and impaired glucose tolerance who were treated with moderate doses of bromocriptine but experienced adverse effects of this treatment...
January 10, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28058732/bromocriptine-treatment-at-the-end-of-lactation-prevents-hyperphagia-higher-visceral-fat-and-liver-triglycerides-in-early-weaned-rats-at-adulthood
#12
Nayara Peixoto-Silva, Egberto G Moura, Janaine C Carvalho, Jéssica L Nobre, Fernanda T Quitete, Cintia R Pinheiro, Ana Paula Santos-Silva, Elaine de Oliveira, Patricia C Lisboa
Non-pharmacological early weaning (NPEW) leads offspring to obesity, higher liver oxidative stress and microsteatosis in adulthood. Pharmacological EW (PEW) by maternal treatment with bromocriptine (BRO) causes obesity in the adult progeny but precludes hepatic injury. To test the hypothesis that BRO prevents the deleterious changes of NPEW, we injected BRO into the pups from the NPEW model on late lactation. Lactating rats were divided into 2 groups: dams with an adhesive bandage around the body to prevent breastfeeding on the last 3 days of lactation and dams whose pups had free suckling (C)...
January 6, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28007932/an-airport-meeting-that-led-to-bromocriptine-use-in-peripartum-cardiomyopathy
#13
Mark Nicholls
No abstract text is available yet for this article.
November 21, 2016: European Heart Journal
https://www.readbyqxmd.com/read/27999593/long-term-clinical-outcomes-of-invasive-giant-prolactinomas-after-a-mean-ten-year-followup
#14
Ze Rui Wu, Yong Zhang, Lin Cai, Shao Jian Lin, Zhi Peng Su, Yong Xu Wei, Han Bing Shang, Wen Lei Yang, Wei Guo Zhao, Zhe Bao Wu
Objective. The aim of this study is to observe clinical outcomes after more than ten years of followup in a group of patients with invasive giant prolactinomas (IGPs) treated with dopamine agonists (DAs). Methods. Twenty-five patients met the criteria of IGPs, among which 16 patients primarily received bromocriptine (BRC) and the other nine had undergone unsuccessful microsurgery prior to BRC treatment. Results. After a mean follow-up period of 135.5 ± 4.7 months, the clinical symptoms in all patients improved by different degrees...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27976369/clomiphene-and-other-antioestrogens-for-ovulation-induction-in-polycystic-ovarian-syndrome
#15
REVIEW
Julie Brown, Cindy Farquhar
BACKGROUND: Subfertility due to anovulation is a common problem in women. First-line oral treatment is with antioestrogens such as clomiphene citrate, but resistance may be apparent with clomiphene. Alternative and adjunctive treatments have been used including tamoxifen, dexamethasone, and bromocriptine. The effectiveness of these is to be determined. OBJECTIVES: To determine the relative effectiveness of antioestrogen agents including clomiphene alone or in combination with other medical therapies in women with subfertility associated with anovulation, possibly caused by polycystic ovarian syndrome...
15, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27940083/statistical-investigation-of-simulated-fed-intestinal-media-composition-on-the-equilibrium-solubility-of-oral-drugs
#16
Zhou Zhou, Claire Dunn, Ibrahim Khadra, Clive G Wilson, Gavin W Halbert
Gastrointestinal fluid is a complex milieu and it is recognised that gut drug solubility is different to that observed in simple aqueous buffers. Simulated gastrointestinal media have been developed covering fasted and fed states to facilitate in vitro prediction of gut solubility and product dissolution. However, the combination of bile salts, phospholipids, fatty acids and proteins in an aqueous buffered system creates multiple phases and drug solubility is therefore a complex interaction between these components, which may create unique environments for each API...
March 1, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27908214/pregnancy-and-tumor-outcomes-in-infertile-women-with-macroprolactinoma-on-cabergoline-therapy
#17
Ashu Rastogi, Sanjay K Bhadada, Anil Bhansali
Hyperprolactinemia and prolactinomas cause infertility in significant number of women. But, pregnancy may lead to post-partum remission of hyperprolactinemia. The data on pregnancy and tumor outcome in women with macroprolactinoma conceiving on Cabergoline (CAB) therapy is increasing but still less than with Bromocriptine. We studied the incidence of fetal malformations, hyperprolactinemia and tumor course after gestation in infertile women harboring macroprolactinoma, who conceived on CAB therapy during the year 2005-2015...
December 2, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27901279/dopamine-agonists-for-preventing-ovarian-hyperstimulation-syndrome
#18
REVIEW
Huilin Tang, Selma Mourad, Suo-Di Zhai, Roger J Hart
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) is a potentially serious complication of ovarian stimulation in assisted reproduction technology (ART). It is characterised by enlarged ovaries and an acute fluid shift from the intravascular space to the third space, resulting in bloating, increased risk of venous thromboembolism and decreased organ perfusion. Most cases are mild, but forms of moderate or severe OHSS appear in 3% to 8% of in vitro fertilisation (IVF) cycles. The dopamine agonist cabergoline was introduced as a secondary prevention intervention for OHSS in women at high risk of OHSS undergoing ART treatment...
30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27900635/somatostatin-and-dopamine-receptor-regulation-of-pituitary-somatotroph-adenomas
#19
REVIEW
Anat Ben-Shlomo, Ning-Ai Liu, Shlomo Melmed
Somatostatin and dopamine receptors are expressed in normal and tumoral somatotroph cells. Upon receptor stimulation, somatostatin and the somatostatin receptor ligands octreotide, lanreotide, and pasireotide, and to a lesser extent, dopamine and the dopamine analogs bromocriptine and cabergoline, suppress growth hormone (GH) secretion from a GH-secreting pituitary somatotroph adenoma. Somatostatin and dopamine receptors are Gαi-protein coupled that inhibit adenylate cyclase activity and cAMP production and reduce intracellular calcium concentration and calcium flux oscillations...
November 29, 2016: Pituitary
https://www.readbyqxmd.com/read/27866462/prolactinoma-and-pregnancy-a-series-of-cases-including-pituitary-apoplexy
#20
Ana Galvão, Daniela Gonçalves, Marta Moreira, Gonçalo Inocêncio, Clara Silva, Jorge Braga
The objective of this article is to evaluate the impact of pregnancy in women with prolactinoma, the possible consequences of therapy maintenance/discontinuation during pregnancy and to assess the type of delivery and maternal-foetal obstetrical outcome. A retrospective study of all pregnant women with prolactinoma in our Centre between 2006 and 2014 was made. We had 35 cases of pregnant women with prolactinoma, two of which had an episode of pituitary apoplexy during the second trimester. At the time of conception, most women were being treated with 5 mg bromocriptine...
November 21, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
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