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https://www.readbyqxmd.com/read/28230605/microscopic-transnasal-transsphenoidal-surgery-for-pediatric-pituitary-adenomas
#1
Wei Jiao, Yimin Huang, Wei Sun, Ting Lei
Microscopic transnasal transsphenoidal surgery (MTTS) has been a time-confirmed effective treatment for pituitary adenomas; however, the data supporting its use in pediatric patients is limited. In this study, the authors summarize the authors' 5-year experience of pituitary adenomectomy via MTTS in a pediatric population. The authors retrospectively reviewed the medical records of 35 patients aged ≤18 years who underwent microscopic transnasal transsphenoidal approach for pituitary adenomas between January 2011 and December 2015...
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28225431/menopause-and-big-data-word-adjacency-graph-modeling-of-menopause-related-chacha-data
#2
Janet S Carpenter, Doyle Groves, Chen X Chen, Julie L Otte, Wendy R Miller
OBJECTIVE: To detect and visualize salient queries about menopause using Big Data from ChaCha. METHODS: We used Word Adjacency Graph (WAG) modeling to detect clusters and visualize the range of menopause-related topics and their mutual proximity. The subset of relevant queries was fully modeled. We split each query into token words (ie, meaningful words and phrases) and removed stopwords (ie, not meaningful functional words). The remaining words were considered in sequence to build summary tables of words and two and three-word phrases...
February 20, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28223847/evaluation-of-icd-10-algorithms-to-identify-hypopituitary-patients-in-the-danish-national-patient-registry
#3
Agnethe Berglund, Morten Olsen, Marianne Andersen, Eigil Husted Nielsen, Ulla Feldt-Rasmussen, Caroline Kistorp, Claus Højbjerg Gravholt, Kirstine Stochhholm
OBJECTIVE: Routinely collected health data may be valuable sources for conducting research. This study aimed to evaluate the validity of algorithms detecting hypopituitary patients in the Danish National Patient Registry (DNPR) using medical records as reference standard. STUDY DESIGN AND SETTING: Patients with International Classification of Diseases (10th edition [ICD-10]) diagnoses of hypopituitarism, or other diagnoses of pituitary disorders assumed to be associated with an increased risk of hypopituitarism, recorded in the DNPR during 2000-2012 were identified...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28223530/differential-tor-activation-and-cell-proliferation-in-arabidopsis-root-and-shoot-apexes
#4
Xiaojuan Li, Wenguo Cai, Yanlin Liu, Hui Li, Liwen Fu, Zengyu Liu, Lin Xu, Hongtao Liu, Tongda Xu, Yan Xiong
The developmental plasticity of plants relies on the remarkable ability of the meristems to integrate nutrient and energy availability with environmental signals. Meristems in root and shoot apexes share highly similar molecular players but are spatially separated by soil. Whether and how these two meristematic tissues have differential activation requirements for local nutrient, hormone, and environmental cues (e.g., light) remain enigmatic in photosynthetic plants. Here, we report that the activation of root and shoot apexes relies on distinct glucose and light signals...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28222413/a-new-tr%C3%AE-mutation-in-resistance-to-thyroid-hormone-syndrome
#5
Corina Neamţu, Claudiu Ţupea, Diana Păun, Anca Hoisescu, Adina Ghemigian, Samuel Refetoff, Chutintorn Sriphrapradang
Thyroid hormones (TH) exert their actions by binding nuclear receptors alpha (TRα1) and beta (TRß1 and TRß2). Resistance to thyroid hormone (RTH) is a clinical syndrome with various clinical manifestations, its hallmark being decreased tissue sensitivity to the action of thyroid hormones. We report the case of a family harbouring a novel TRß mutation. Sequencing of the TRβ gene revealed a single nucleotide substitution-C to G in codon 340: glutamine was replaced by glutamic acid. The clinical picture and biochemical and hormonal panel showed significant differences within the family, despite their sharing the same mutation...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28214658/an-association-study-of-established-breast-cancer-reproductive-and-lifestyle-risk-factors-with-tumour-subtype-defined-by-the-prognostic-70-gene-expression-signature-mammaprint-%C3%A2
#6
M Makama, C A Drukker, E J Th Rutgers, L Slaets, F Cardoso, M A Rookus, K Tryfonidis, L J Van't Veer, M K Schmidt
BACKGROUND: Reproductive and lifestyle factors influence both breast cancer risk and prognosis; this might be through breast cancer subtype. Subtypes defined by immunohistochemical hormone receptor markers and gene expression signatures are used to predict prognosis of breast cancer patients based on their tumour biology. We investigated the association between established breast cancer risk factors and the 70-gene prognostication signature in breast cancer patients. PATIENTS AND METHODS: Standardised questionnaires were used to obtain information on established risk factors of breast cancer from the Dutch patients of the MINDACT trial...
February 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28211875/a-hyaluronan-hydrogel-scaffold-based-xeno-free-culture-system-for-ex-vivo-expansion-of-human-corneal-epithelial-stem-cells
#7
D Chen, Y Qu, X Hua, L Zhang, Z Liu, S C Pflugfelder, D-Q Li
PurposeTo develop a hyaluronan hydrogel scaffold-based xeno-free culture system for ex vivo cultivation of human corneal epithelial stem cells (CESCs).Patients and MethodsCESCs were cultivated from donor limbal explants on the HyStem-C Hydrogel bio-scaffold in 12-well plates for 3 weeks. Group A used the traditional supplemented hormonal epidermal medium (SHEM) and group B used the defined SHEM (without fetal bovine serum and toxin A, adding 20% serum replacement). The growth and morphology of the cultured cells were assessed by phase contrast microscope...
February 17, 2017: Eye
https://www.readbyqxmd.com/read/28211028/short-term-supra-physiological-rhgh-administration-induces-transient-dna-damage-in-peripheral-lymphocytes-of-healthy-women
#8
C Fantini, P Sgrò, M Pittaluga, A de Perini, I Dimauro, A Sartorio, D Caporossi, L Di Luigi
PURPOSE: While a good safety for recombinant human growth hormone (rhGH) therapy at replacement doses is recognized, a possible link between high concentration of the GH-IGF-I axis hormones and side negative effect has been reported. The aim of this pilot study was to assess whether a short-term exposure to supra-physiological doses of rhGH may affect DNA integrity in human lymphocytes (PBL). METHODS: Eighteen healthy Caucasian female (24.2 ± 3.5 years) were randomly included in a Control (n = 9) and rhGH administration group (n = 9, 3-week treatment)...
February 16, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28210055/effects-of-simplified-lymph-drainage-on-the-body-in-females-with-menopausal-disorder
#9
Kazuhisa Inoue, Hiroshi Maruoka
[Purpose] Hormone replacement therapy has been reported to be effective for alleviating menopausal symptoms, its side effects have been a concern. Therefore, it is necessary to investigate methods that could alleviate menopausal symptoms but with fewer side effects. Few previous reports have investigated the effects of simplified, viable manual lymph drainage, particularly the effects of one-time therapy on physiologically active substances and other variables. Effects of one-time simplified lymph drainage performed at salon A were investigated in females with any type of menopausal symptoms, such as edema or a sense of fatigue...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28208903/nephrotic-syndrome-increases-the-need-for-levothyroxine-replacement-in-patients-with-hypothyroidism
#10
Hareeshababu Karethimmaiah, Vijaya Sarathi
INTRODUCTION: Nephrotic syndrome is a known cause of hypothyroidism; however, its effect on replacement doses of L-thyroxine in patients with primary hypothyroidism is not systematically studied. AIM: The aim of the present study was to evaluate the effect of newly diagnosed nephrotic syndrome on the dose of L-thyroxine replacement in previously diagnosed patients with primary hypothyroidism who were on full, stable dose of L-thyroxine replacement for at least one year...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208158/epidemiologic-factors-that-predict-long-term-survival-following-a-diagnosis-of-epithelial-ovarian-cancer
#11
Shana J Kim, Barry Rosen, Isabel Fan, Anna Ivanova, John R McLaughlin, Harvey Risch, Steven A Narod, Joanne Kotsopoulos
BACKGROUND: Various epidemiologic factors have been shown to influence the risk of ovarian cancer development. Given the high fatality associated with this disease, it is of interest to evaluate the association of prediagnostic hormonal, reproductive, and lifestyle exposures with ovarian cancer-specific survival. METHODS: We included 1421 patients with invasive epithelial ovarian cancer diagnosed in Ontario, Canada. Clinical information was obtained from medical records and prediagnostic exposure information was collected by telephone interview...
February 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28207545/primary-hypothyroidism-in-the-community-lower-daily-dosages-of-levothyroxine-replacement-therapy-for-asian-patients
#12
Ngiap Chuan Tan, Rong Quan Chew, Yi Ling Eileen Koh, Reena Chandini Subramanian, Usha Sankari, Meykkumar Meyappan, Li Wei Cho
The goal of treatment in patients with primary hypothyroidism is to attain euthyroidism guided by the stipulated thyroid-stimulating hormone (TSH) levels range so as to minimize any potential long-term adverse effects. However, various factors may result in their Levothyroxine (T4) under and over-replacement.Our study aimed to evaluate the mean daily dose of L-T4 replacement for Asian patients with primary hypothyroidism. The secondary aims were to determine the proportion of those who were either over or under-replaced, and the factors associated with their thyroid function status and replacement adherence...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28205591/protective-effect-of-17%C3%AE-estradiol-upon-hippocampal-spine-density-and-cognitive-function-in-an-animal-model-of-vascular-dementia
#13
Ying Zhu, Quanguang Zhang, Wenli Zhang, Ning Li, Yongxin Dai, Jingyi Tu, Fang Yang, Darrell W Brann, Ruimin Wang
The current study examined whether the steroid hormone, 17β-estradiol (E2) can exert long-lasting beneficial effects upon axonal health, synaptic plasticity, dementia-related amyloid-beta (Aβ) protein expression, and hippocampal-dependent cognitive function in an animal model of chronic cerebral hypoperfusion and vascular dementia (VaD). Chronic cerebral hypoperfusion and VaD was induced by bilateral common carotid artery occlusion (BCCAO) in adult male Sprague Dawley rats. Low dose E2 administered for the first 3-months after BCCAO exerted long-lasting beneficial effects, including significant neuroprotection of hippocampal CA1 neurons and preservation of hippocampal-dependent cognitive function when examined at 6-months after BCCAO...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28196859/dietary-nitrite-reverses-features-of-postmenopausal-metabolic-syndrome-induced-by-high-fat-diet-and-ovariectomy-in-mice
#14
Kazuo Ohtake, Nobuyuki Ehara, Hiroshige Chiba, Genya Nakano, Kunihiro Sonoda, Junta Ito, Hiroyuki Uchida, Jun Kobayashi
Menopausal women are at greater risk of developing metabolic syndrome with reduced endothelial nitric oxide synthase (eNOS) activity. Hormone replacement therapy increases eNOS activity and normalizes some characteristics of metabolic syndrome. We hypothesized that nitric oxide (NO) supplementation should have a therapeutic effect in this syndrome. We examined the effect of dietary nitrite on mice model with postmenopausal metabolic syndrome induced by ovariectomy (OVX) with high fat diet (HF). C57BL/6 female mice were divided into five groups, sham+normal fat diet (NF), sham+ HF, OVX+HF without or with sodium nitrite (50mg and 150mg/L) in drinking water...
February 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28196799/a-phase-2-trial-of-long-acting-transcon-growth-hormone-in-adult-gh-deficiency
#15
Charlotte Höybye, Andreas F H Pfeiffer, Diego Ferone, Jens S Christiansen, David Gilfoyle, Eva Dam Christoffersen, Eva Mortensen, Jonathan A Leff, Michael Beckert
TransCon growth hormone is a sustained release human growth hormone prodrug in development in which unmodified growth hormone is transiently linked to a carrier molecule. It is intended as an alternative to daily growth hormone in the treatment of growth hormone deficiency. This was a multi-center, randomized, open-label, active-controlled trial designed to compare the safety (including tolerability and immunogenicity), pharmacokinetics, and pharmacodynamics of three doses of weekly TransCon GH to daily growth hormone (Omnitrope)...
February 14, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28196668/effects-of-sex-hormone-treatment-on-white-matter-microstructure-in-individuals-with-gender-dysphoria
#16
Georg S Kranz, Rene Seiger, Ulrike Kaufmann, Allan Hummer, Andreas Hahn, Sebastian Ganger, Martin Tik, Christian Windischberger, Siegfried Kasper, Rupert Lanzenberger
Sex steroid hormones such as estradiol and testosterone are known to have organizing, as well as activating effects on neural tissue in animals and humans. This study investigated the effects of transgender hormone replacement therapy on white matter microstructure using diffusion tensor imaging. Female-to-male and male-to-female transgender participants were measured at baseline, four weeks and four months past treatment start and compared to female and male controls. We observed androgenization-related reductions in mean diffusivity and increases in fractional anisotropy...
February 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/28195993/subcutaneous-testosterone-letrozole-therapy-before-and-concurrent-with-neoadjuvant-breast-chemotherapy-clinical-response-and-therapeutic-implications
#17
Rebecca L Glaser, Anne E York, Constantine Dimitrakakis
OBJECTIVE: Hormone receptor-positive breast cancers respond favorably to subcutaneous testosterone combined with an aromatase inhibitor. However, the effect of testosterone combined with an aromatase inhibitor on tumor response to chemotherapy was unknown. This study investigated the effect of testosterone-letrozole implants on breast cancer tumor response before and during neoadjuvant chemotherapy. METHODS: A 51-year-old woman on testosterone replacement therapy was diagnosed with hormone receptor-positive invasive breast cancer...
February 13, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28195143/aging-and-serum-exomir-content-in-women-effects-of-estrogenic-hormone-replacement-therapy
#18
Reeta Kangas, Timo Törmäkangas, Vidal Fey, Juha Pursiheimo, Ilkka Miinalainen, Markku Alen, Jaakko Kaprio, Sarianna Sipilä, Anna-Marja Säämänen, Vuokko Kovanen, Eija K Laakkonen
Exosomes participate in intercellular messaging by transporting bioactive lipid-, protein- and RNA-molecules and -complexes. The contents of the exosomes reflect the physiological status of an individual making exosomes promising targets for biomarker analyses. In the present study we extracted exosome microRNAs (exomiRs) from serum samples of premenopausal women (n = 8) and monozygotic postmenopausal twins (n = 10 female pairs), discordant for the use of estrogenic hormone replacement therapy (HRT), in order to see whether the age or/and the use of HRT associates with exomiR content...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28193628/management-of-endocrine-disease-neuroendocrine-surveillance-and-management-of-neurosurgical-patients-non-pituitary
#19
Aoife Garrahy, Mark Sherlock, Chris J Thompson
Advances in the management of traumatic brain injury, subarachnoid haemorrhage and intracranial tumours have led to improved survival rates and an increased focus on quality of life of survivors. Endocrine sequelae of the acute brain insult and subsequent neurosurgery, peri-operative fluid administration and/or cranial irradiation are now well described. Unrecognized acute hypopituitarism, particularly ACTH/cortisol deficiency and diabetes insipidus, can be life-threatening. While hypopituitarism may be transient, up to 30% of survivors of TBI have chronic hypopituitarism, which can diminish quality of life and hamper rehabilitation...
February 13, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28193557/birds-and-flame-retardants-a-review-of-the-toxic-effects-on-birds-of-historical-and-novel-flame-retardants
#20
REVIEW
Mélanie F Guigueno, Kim J Fernie
Flame retardants (FRs) are a diverse group of chemicals, many of which persist in the environment and bioaccumulate in biota. Although some FRs have been withdrawn from manufacturing and commerce (e.g., legacy FRs), many continue to be detected in the environment; moreover, their replacements and/or other novel FRs are also detected in biota. Here, we review and summarize the literature on the toxic effects of various FRs on birds. Birds integrate chemical information (exposure, effects) across space and time, making them ideal sentinels of environmental contamination...
February 10, 2017: Environmental Research
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