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https://www.readbyqxmd.com/read/29453736/reproductive-epidemiology-of-glial-tumors-may-reveal-novel-treatments-high-dose-progestins-or-progesterone-antagonists-as-endocrino-immune-modifiers-against-glioma
#1
REVIEW
Meric A Altinoz, Aysel Ozpinar, Ilhan Elmaci
Female gender, contraceptives, and menopausal hormone replacement treatments containing progesterone analogues associate with higher risk of meningiomas yet with lower risk of gliomas. Progesterone receptor (PR) expression and mifepristone treatment was highly discussed for meningiomas. However, much less is known in regard to progesterone actions in gliomas despite PR expression strongly correlates with their grade. Meningiomas and gliomas may grow faster during gestation; but paradoxically, parousity reduces lifetime risk of gliomas which can be explained with dichotomous cell growth-stimulating and inhibitory actions of progesterone at low versus high levels...
February 17, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29452261/maternal-betaine-administration-modulates-hepatic-type-1-iodothyronine-deiodinase-dio1-expression-in-chicken-offspring-through-epigenetic-modifications
#2
Zhen Hou, Qinwei Sun, Yun Hu, Shu Yang, Yibo Zong, Ruqian Zhao
As a feed additive, betaine is widely used in livestock production for its ability to promote growth. Our previous studies had reported that maternal betaine supplementation altered hepatic metabolism in offspring. But it remains unknown whether and how maternal betaine modulates metabolism of thyroid hormones in the offspring chickens by epigenetic modification. In this study, one hundred and twenty Rugao yellow-feathered laying hens were randomly divided into two groups, and were fed basal diet with or without 0...
February 13, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29451226/final-adult-height-and-endocrine-complications-in-young-adults-with-%C3%AE-thalassemia-major-tm-who-received-oral-iron-chelation-oic-in-comparison-with-those-who-did-not-use-oic
#3
Ashraf T Soliman, Mohamed A Yassin, Vincenzo De Sanctis
BACKGROUND: Relatively little is known about endocrine function, bone mineral health, and growth during oral iron chelation therapy in β-thalassemia major patients (TM) on treatment with deferasirox. AIMS OF THE STUDY: To study the frequency of endocrine complications, IGF-1 levels and final adult standing height (FA-Ht) in patients with BTM in two groups of adult patients. PATIENTS AND METHODS: The first group (Group A; 15 patients, 6 females and 9 males) received oral iron chelation therapy (OIC) with deferasirox for 6 years before puberty; the second group (Group B;40 patients) attained the FA-Ht before the use of OIC (iron chelation therapy with deferoxamine (DFO) given subcutaneously, since the age of 2 years)...
February 16, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29451224/hypogonadism-in-male-thalassemia-major-patients-pathophysiology-diagnosis-and-treatment
#4
Vincenzo De Sanctis, Ashraf T Soliman, Mohamed A Yassin, Salvatore Di Maio, Shahina Daar, Heba Elsedfy, Nada Soliman, Christos Kattamis
Failure of pubertal growth, delay or absence of sexual development, infertility and sexual dysfunction due to hypogonadism and defective spermatogenesis are frequent and well recognized disturbances among male patients with transfusion dependent (TD) thalassaemia major (β-thal). These problems are attributed mainly to the damage caused by chronic anaemia and the deposition of excess iron in the pituitary gland and testicles. This is a short review of male pubertal disorders in patients with β-thal written by pediatric endocrinologists and haematologists with an interest and active involvement, in the diagnosis and management of these complications in this group of patients...
February 16, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29448940/comparative-analysis-of-alfalfa-medicago-sativa-l-leaf-transcriptomes-reveals-genotype-specific-salt-tolerance-mechanisms
#5
Yunting Lei, Yuxing Xu, Christian Hettenhausen, Chengkai Lu, Guojing Shen, Cuiping Zhang, Jing Li, Juan Song, Honghui Lin, Jianqiang Wu
BACKGROUND: Soil salinity is an important factor affecting growth, development, and productivity of almost all land plants, including the forage crop alfalfa (Medicago sativa). However, little is known about how alfalfa responds and adapts to salt stress, particularly among different salt-tolerant cultivars. RESULTS: Among seven alfalfa cultivars, we found that Zhongmu-1 (ZM) is relatively salt-tolerant and Xingjiang Daye (XJ) is salt-sensitive. Compared to XJ, ZM showed slower growth under low-salt conditions, but exhibited stronger tolerance to salt stress...
February 15, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29446010/phosphaturic-mesenchymal-tumors-what-an-endocrinologist-should-know
#6
REVIEW
J M Boland, P J Tebben, A L Folpe
Tumor-induced osteomalacia (TIO), also known as "oncogenic osteomalacia", is a rare cause of osteomalacia. TIO often has an insidious onset characterized clinically by progressive muscle weakness and bone pain with fractures. The hallmark biochemical finding is a persistent low serum phosphorus concentration due to renal phosphate wasting. The vast majority of cases of TIO result from production of the phosphaturic hormone fibroblast growth factor 23 (FGF23) by a histologically distinctive mesenchymal tumor, termed "phosphaturic mesenchymal tumor" (PMT)...
February 14, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29445356/dhea-supplementation-confers-no-additional-benefit-to-that-of-growth-hormone-on-pregnancy-and-live-birth-rates-in-ivf-patients-categorized-as-poor-prognosis
#7
Kevin N Keane, Peter M Hinchliffe, Philip K Rowlands, Gayatri Borude, Shanti Srinivasan, Satvinder S Dhaliwal, John L Yovich
Background: In vitro fertilization (IVF) patients receive various adjuvant therapies to enhance success rates, but the true benefit is actively debated. Growth hormone (GH) and dehydroepiandrosterone (DHEA) supplementation were assessed in women undergoing fresh IVF transfer cycles and categorized as poor prognosis from five criteria. Methods: Data were retrospectively analyzed from 626 women undergoing 626 IVF cycles, where they received no adjuvant, GH alone, or GH-DHEA in combination...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29445301/comparative-effectiveness-of-early-line-nab-paclitaxel-vs-paclitaxel-in-patients-with-metastatic-breast-cancer-a-us-community-based-real-world-analysis
#8
Reshma L Mahtani, Monika Parisi, Stefan Glück, Quanhong Ni, Siyeon Park, Corey Pelletier, Claudio Faria, Fadi Braiteh
Background: Real-world analyses of treatments for patients with metastatic breast cancer are limited. We evaluated the comparative effectiveness of nab -paclitaxel vs. paclitaxel in patients with metastatic breast cancer using data from an electronic medical record database from community practices across the USA. Methods: We performed a retrospective cohort study using fully de-identified data from an independent US electronic medical record platform of patients with metastatic breast cancer initiating single-agent nab -paclitaxel or paclitaxel as a first- or second-line treatment from December 1, 2010 to October 6, 2014...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29444670/breast-cancer-in-ethiopia-evidence-for-geographic-difference-in-the-distribution-of-molecular-subtypes-in-africa
#9
Endale Hadgu, Daniel Seifu, Wondemagegnhu Tigneh, Yonas Bokretsion, Abebe Bekele, Markos Abebe, Thomas Sollie, Sofia D Merajver, Christina Karlsson, Mats G Karlsson
BACKGROUND: Breast cancer is a heterogeneous disease with several morphological and molecular subtypes. Widely accepted molecular classification system uses assessment of estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) and proliferation marker Ki67. Few studies have been conducted on the incidence and molecular types of breast cancer in Sub-Saharan Africa. Previous studies mainly from Western and Central Africa, showed breast cancer to occur at younger ages and to present with aggressive features, such as high-grade, advanced stage and triple-negative phenotype (negative for ER, PR and HER2)...
February 14, 2018: BMC Women's Health
https://www.readbyqxmd.com/read/29443755/argininemia-as-a-cause-of-severe-chronic-stunting-and-partial-growth-hormone-deficiency-pghd-a-case-report
#10
Xiaotang Cai, Dan Yu, Yongmei Xie, Hui Zhou
RATIONALE: Argininemia is an autosomal recessive inherited disorder of the urea cycle. Because of its atypical symptoms in early age, diagnosis can be delayed until the typical chronic manifestations - including spastic diplegia, deterioration in cognitive function, and epilepsy - appear in later childhood. PATIENT CONCERNS: A Chinese boy initially presented with severe stunting and partial growth hormone deficiency (PGHD) at 3 years old and was initially treated with growth hormone replacement therapy...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29438552/estrogen-replacement-in-turner-syndrome-literature-review-and-practical-considerations
#11
Karen O Klein, Robert Rosenfield, Richard J Santen, Aneta Gawlik, Philippe Backeljauw, Claus H Gravholt, Theo Sas, Nelly Mauras
Context: Most girls with Turner Syndrome have hypergonadotropic hypogonadism and need hormonal replacement - for induction of puberty and later maintaining secondary sex characteristics, attaining peak bone mass, and uterine growth. The optimal estrogen replacement regimen is still being studied. Evidence Acquisition: We conducted a systematic search of PubMed for research related to TS and puberty, including key words: estrogen, growth, puberty. Evidence Synthesis: The goals of replacement are to mimic normal timing and progression of physical and social development while minimizing risks...
February 8, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29438534/both-in-vivo-fsh-depletion-and-follicular-exposure-to-gonadotrophin-releasing-hormone-analogues-in-vitro-are-not-effective-to-prevent-follicular-depletion-during-chemotherapy-in-mice
#12
F Horicks, G Van Den Steen, C Gervy, H J Clarke, I Demeestere
STUDY QUESTION: Does fertility preservation using gonadotrophin-releasing hormone (GnRH) analogues during chemotherapy act through a direct effect on the ovary or through inhibition of FSH secretion? SUMMARY ANSWER: The absence of FSH in vivo and the direct exposition of ovarian follicles to GnRH analogues in vitro did not prevent chemotherapy-induced ovarian damage. WHAT IS KNOWN ALREADY: The potential mechanisms of action of GnRH analogues in protecting ovaries against chemotherapy damage remain poorly understood...
February 9, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29437878/essential-role-of-polo-like-kinase-1-plk1-oncogene-in-tumor-growth-and-metastasis-of-tamoxifen-resistant-breast-cancer
#13
Sung Baek Jeong, Ji Hye Im, Jeong-Hoon Yoon, Quyen Thu Bui, Sung Chul Lim, Joon Myong Song, Yumi Shim, Jieun Yun, Janghee Hong, Keon Wook Kang
The most common therapy for estrogen receptor-positive breast cancer is anti-hormone therapy such as tamoxifen (TAM). However, acquisition of resistance to TAM in one-third of patients presents a serious clinical problem. Polo-like kinase 1 (Plk1) is a key oncogenic regulator of completion of G2/M phase of the cell cycle. We assessed Plk1 expression in five chemoresistant cancer cell types and found that Plk1 and its downstream phosphatase Cdc25c were selectively overexpressed in TAM-resistant MCF-7 (TAMR-MCF-7) breast cancer cells...
February 7, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29437768/fda-approval-ribociclib-for-the-treatment-of-postmenopausal-women-with-hormone-receptor-positive-her2-negative-advanced-or-metastatic-breast-cancer
#14
Anand Shah, Erik Bloomquist, Shenghui Tang, Wentao Fu, Youwei Bi, Qi Liu, Jingyu Yu, Ping Zhao, Todd R Palmby, Kirsten B Goldberg, C J George Chang, Paresma Patel, Elleni Alebachew, Amy Tilley, William F Pierce, Amna Ibrahim, Gideon M Blumenthal, Rajeshwari Sridhara, Julia A Beaver, Richard Pazdur
On March 13, 2017, the U.S. Food and Drug Administration approved ribociclib (KISQALI, Novartis Pharmaceuticals Corp.), a cyclin-dependent kinase 4/6 inhibitor, in combination with an aromatase inhibitor as initial endocrine-based therapy for the treatment of postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced or metastatic breast cancer. The approval was based on a randomized, double-blind, placebo-controlled, international clinical trial (MONALEESA-2)...
February 7, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29435821/7-8-dihydroxycoumarin-exerts-antitumor-potential-on-dmba-induced-mammary-carcinogenesis-by-inhibiting-er%C3%AE-pr-egfr-and-igf1r-involvement-of-mapk1-2-jnk1-2-akt-pathway
#15
Abhishek Kumar, Priyashree Sunita, Shivesh Jha, Shakti P Pattanayak
Breast cancer (BC) is a persistent and impulsive metabolic disorder with the highest prevalence in women, worldwide. 7,12-Dimethylbenz(a)anthracene (DMBA) is a potent polyaromatic hydrocarbon (PAH)-based carcinogen producing mammary carcinomas in rats resembling the human hormone-dependent BC. 7,8-Dihydroxycoumarin (78DC) is a coumarin derivative that possesses diversified and favorable pharmacology profile to be considered in anticancer research against various malignancies. The present study was intended to investigate the antiproliferative and chemotherapeutic potentials of 78DC (20, 40, and 80 mg/kg BW) against DMBA (20 mg in olive oil)-induced mammary carcinoma Sprague-Dawley rats...
February 12, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29435048/luteinizing-hormone-compromises-the-in-vivo-anti-tumor-effect-of-cisplatin-on-human-epithelial-ovarian-cancer-cells
#16
Yan Huang, Yuqi Zhou, Lingfang Xia, Jia Tang, Hao Wen, Meiqin Zhang
Platinum-based chemotherapy is the most common therapeutic regimen used to treat patients with ovarian cancer. However, the emergence of drug resistance to platinum compromises the clinical success of this treatment. Epithelial ovarian cancer is usually accompanied by an increased level of luteinizing hormone (LH). Therefore, the effect of LH on platinum resistance requires further investigation. In the current study, the effect of cisplatin and/or LH on platinum resistance was examined using the SKOV3ip1 and HeyA8 models...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434878/progesterone-impairs-herceptin-effect-on-breast-cancer-cells
#17
Kamila Kitowska, Agnieszka Kowalska, Magdalena Mieszkowska, Dominika Piasecka, Andrzej C Skladanowski, Hanna M Romanska, Rafal Sadej
Breast cancer (BCa) is the most common cancer affecting women worldwide. Overexpression of human epidermal growth factor receptor 2 (HER2) occurs in ~20-25% of invasive ductal breast carcinomas and is associated with the more aggressive phenotype. Herceptin, a humanized antibody against HER2, is a standard therapy in HER2-overexpressing cases. Approximately one-third of patients relapse despite treatment. Therefore numerous studies have investigated the molecular mechanisms associated with Herceptin resistance...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29433573/design-of-the-growth-hormone-deficiency-and-efficacy-of-treatment-get-score-and-non-interventional-proof-of-concept-study
#18
Peter H Kann, Simona Bergmann, Martin Bidlingmaier, Christina Dimopoulou, Birgitte T Pedersen, Günter K Stalla, Matthias M Weber, Stefanie Meckes-Ferber
BACKGROUND: The adverse effects of growth hormone (GH) deficiency (GHD) in adults (AGHD) on metabolism and health-related quality of life (HRQoL) can be improved with GH substitution. This investigation aimed to design a score summarising the features of GHD and evaluate its ability to measure the effect of GH substitution in AGHD. METHODS: The Growth hormone deficiency and Efficacy of Treatment (GET) score (0-100 points) assessed (weighting): HRQoL (40%), disease-related days off work (10%), bone mineral density (20%), waist circumference (10%), low-density lipoprotein cholesterol (10%) and body fat mass (10%)...
February 13, 2018: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/29433055/presurgical-treatment-with-somatostatin-analogues-in-growth-hormone-secreting-pituitary-adenomas-a-long-term-single-center-experience
#19
Liang Lv, Yu Hu, Peizhi Zhou, Shizhen Zhang, Senlin Yin, Nannan Zhang, Shu Jiang
OBJECTIVE: Acromegalic patients with macro- or giant adenomas often had poor prognosis after surgery. Somatostatin analogues (SSAs) show high effectiveness in both tumor shrinkage and serum GH reduction. But the role of SSAs in pre-surgical treatment and the management among macro- and giant adenomas remains controversial. PATIENTS AND METHODS: A total of 100 acromegalic patients with macro- or giant adenomas that underwent surgery in our institution between January 2010 and December 2016 were enrolled in the current retrospective study...
February 6, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29432837/vitamin-k2-a-menaquinone-present-in-dairy-products-targets-castration-resistant-prostate-cancer-cell-line-by-activating-apoptosis-signaling
#20
Subramanyam Dasari, Angela Lincy Prem Antony Samy, Andre Kajdacsy-Balla, Maarten C Bosland, Gnanasekar Munirathinam
The aim of this study was to evaluate the therapeutic effects of vitamin K2 (VK2) on castration-resistant prostate cancer (CRPC) and its anti-cancer mechanisms in a pre-clinical study using a VCaP cell line (ATCC ® CRL-2876™) which was established from a vertebral bone metastasis from a patient with hormone refractory prostate cancer. Our data showed that VK2 significantly inhibited CRPC VCaP cell proliferation in a dosedependent manner at 48 h treatment in vitro. In addition, VK2 reduced the migration potential of VCaP cells and inhibited anchorage-independent growth of these cells...
February 9, 2018: Food and Chemical Toxicology
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