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https://www.readbyqxmd.com/read/28938797/revisiting-the-safety-of-aspartame
#1
Arbind Kumar Choudhary, Etheresia Pretorius
Aspartame is a synthetic dipeptide artificial sweetener, frequently used in foods, medications, and beverages, notably carbonated and powdered soft drinks. Since 1981, when aspartame was first approved by the US Food and Drug Administration, researchers have debated both its recommended safe dosage (40 mg/kg/d) and its general safety to organ systems. This review examines papers published between 2000 and 2016 on both the safe dosage and higher-than-recommended dosages and presents a concise synthesis of current trends...
September 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28938749/the-testicular-transcriptome-associated-with-spermatogonia-differentiation-initiated-by-gonadotrophin-stimulation-in-the-juvenile-rhesus-monkey-macaca-mulatta
#2
Suresh Ramaswamy, William H Walker, Paula Aliberti, Rahil Sethi, Gary R Marshall, Alyxzandria Smith, Seyedmehdi Nourashrafeddin, Alicia Belgorosky, Uma R Chandran, Mark P Hedger, Tony M Plant
STUDY QUESTION: What is the genetic landscape within the testis of the juvenile rhesus monkey (Macaca mulatta) that underlies the decision of undifferentiated spermatogonia to commit to a pathway of differentiation when puberty is induced prematurely by exogenous LH and FSH stimulation? SUMMARY ANSWER: Forty-eight hours of gonadotrophin stimulation of the juvenile monkey testis resulted in the appearance of differentiating B spermatogonia and the emergence of 1362 up-regulated and 225 down-regulated testicular mRNAs encoding a complex network of proteins ranging from enzymes regulating Leydig cell steroidogenesis to membrane receptors, and from juxtacrine and paracrine factors to transcriptional factors governing spermatogonial stem cell fate...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938737/complex-catsper-dependent-and-independent-ca2-i-signalling-in-human-spermatozoa-induced-by-follicular-fluid
#3
Sean G Brown, Sarah Costello, Mark C Kelly, Mythili Ramalingam, Ellen Drew, Stephen J Publicover, Christopher L R Barratt, Sarah Martins Da Silva
STUDY QUESTION: Does progesterone in human follicular fluid (hFF) activate CatSper and do other components of hFF modulate this effect and/or contribute separately to hFF-induced Ca2+ signaling? SUMMARY ANSWER: hFF potently stimulates CatSper and increases [Ca2+]i, primarily due to high concentrations of progesterone, however, other components of hFF also contribute to [Ca2+]i signaling, including modulation of CatSper channel activity and inhibition of [Ca2+]i oscillations...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938728/modeling-of-live-birth-rates-and-cost-effectiveness-of-oocyte-cryopreservation-for-cancer-patients-prior-to-high-and-low-risk-gonadotoxic-chemotherapy
#4
B Lyttle Schumacher, N Grover, T Mesen, A Steiner, J Mersereau
STUDY QUESTION: What is the live-birth rate (LBR) and cost-effectiveness of fertility preservation with oocyte cryopreservation (FP-OC) compared to expectant management in cancer patients age 25-40 based on estimated gonadotoxicity of treatments 5 years after cancer diagnosis? SUMMARY ANSWER: Oocyte cryopreservation prior to cancer treatment is more costly, yet more effective (producing more live births), than not undergoing oocyte cryopreservation but it is most beneficial for patients undergoing high-risk chemotherapy (HRC)...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938720/deep-whole-genome-sequencing-of-90-han-chinese-genomes
#5
Tianming Lan, Haoxiang Lin, Wenjuan Zhu, Tellier Christian Asker Melchior Laurent, Mengcheng Yang, Xin Liu, Jun Wang, Jian Wang, Huanming Yang, Xun Xu, Xiaosen Guo
Next-generation sequencing provides a high-resolution insight into human genetic information. However, the focus of previous studies has primarily been on low-coverage data due to the high cost of sequencing. Although the 1000 Genomes Project and the Haplotype Reference Consortium have both provided powerful reference panels for imputation, low-frequency and novel variants remain difficult to discover and call with accuracy on the basis of low-coverage data. Deep sequencing provides an optimal solution for the problem of these low-frequency and novel variants...
September 1, 2017: GigaScience
https://www.readbyqxmd.com/read/28938517/green-tea-camellia-sinensis-and-l-theanine-medicinal-values-and-beneficial-applications-in-humans-a-comprehensive-review
#6
REVIEW
Muhammad Saeed, Muhammad Naveed, Muhammad Arif, Mohib Ullah Kakar, Robina Manzoor, Mohamed Ezzat Abd El-Hack, Mahmoud Alagawany, Ruchi Tiwari, Rekha Khandia, Ashok Munjal, Kumaragurubaran Karthik, Kuldeep Dhama, Hafiz M N Iqbal, Maryam Dadar, Chao Sun
Green tea (Camellia sinensis) is a famous herb, and its extract has been extensively used in traditional Chinese medicinal system. In this context, several studies have revealed its health benefits and medicinal potentialities for several ailments. With ever increasing scientific knowledge, search for safer, potential and novel type of health-related supplements quest, scientists are re-directing their research interests to explore natural resources i.e. medicinal herbs/plant derived compounds. Green tea consumption has gained a special attention and popularity in the modern era of changing lifestyle...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28938490/expression-of-contactin-4-is-associated-with-malignant-behavior-in-pheochromocytomas-and-paragangliomas
#7
Lucie Evenepoel, Francien H van Nederveen, Lindsey Oudijk, Thomas G Papathomas, David F Restuccia, Eric J T Belt, Wouter W de Herder, Richard A Feelders, Gaston J H Franssen, Marc Hamoir, Dominique Maiter, Aurel Perren, Henri J L M Timmers, Susanne van Eeden, Laurent Vroonen, Selda Aydin, Mercedes Robledo, Miikka Vikkula, Ronald R de Krijger, Winand N M Dinjens, Alexandre Persu, Esther Korpershoek
Context: Pheochromocytomas and paragangliomas (PPGL) are rare neuroendocrine, usually benign tumors. Currently, the only reliable criterion of malignancy is the presence of metastases. Objective: The aim was to identify genes associated with malignancy in PPGL. Design: Transcriptomic profiling was performed on 40 benign and 11 malignant PPGL. Genes showing a significantly different expression between benign and malignant PPGL with a ratio ≥ 4 were confirmed, and subsequently tested in an independent series by qRT-PCR...
August 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938433/type-2-diabetes-and-osteoporosis-a-guide-to-optimal-management
#8
Stavroula Paschou, Anastasia D Dede, Panagiotis G Anagnostis, Andromachi Vryonidou, Daniel Morganstein, Dimitrios G Goulis
Context: Both type 2 diabetes (T2D) and osteoporosis are affected by aging and quite often co-exist. Furthermore, the fracture risk in patients with T2D is increased. The aim of this article is to review updated information on osteoporosis and fracture risk in patients with T2D, to discuss the effects of diabetes treatment on bone metabolism, as well as the effect of anti-osteoporotic medications on the incidence and control of T2D and to provide a personalized guide to the optimal management...
June 21, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28937366/correlation-between-human-epidermal-growth-factor-receptor-2-oncoprotein-expression-and-some-prognostic-factors-in-papillary-thyroid-carcinoma
#9
Shervin Rabiee, Mohamadreza Jalali Nadoushan, Neda Mehdizade Rayeni, Iman Ansari
BACKGROUND: Thyroid cancer is one of the increasing cancer diagnoses in the United States. Papillary thyroid carcinoma (PTC) is the most common thyroid cancer. There are a few researches done determining the role of human epidermal growth factor receptor 2 HER2 (erbB-2) in PTC prognosis. They also have been controversial. This study is designed to determine the correlation of HER2 expression with tumor size, lymph node involvement, and capsular invasion as prognostic factors. MATERIALS AND METHODS: This research was a cross-sectional descriptive-analytic study...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937339/locked-out
#10
Veronica Johansson, Surjo R Soekadar, Jens Clausen
Brain-computer interfaces (BCIs) can enable communication for persons in severe paralysis including locked-in syndrome (LIS); that is, being unable to move or speak while aware. In cases of complete loss of muscle control, termed "complete locked-in syndrome," a BCI may be the only viable solution to restore communication. However, a widespread ignorance regarding quality of life in LIS, current BCIs, and their potential as an assistive technology for persons in LIS, needlessly causes a harmful situation for this cohort...
October 2017: Cambridge Quarterly of Healthcare Ethics: CQ: the International Journal of Healthcare Ethics Committees
https://www.readbyqxmd.com/read/28937058/epidemiology-of-human-leukocyte-antigens-among-omani-population
#11
Issa Al Salmi, Abdul Massiah Metry, Faisal Al Ismaili, Alan Hola, Faissal Shaheen, Hana Fakhoury, Suad Hannawi
Oman is located on the Southeastern coast of the Arabian Peninsula, and its population has high levels of consanguinity. Human leukocytic antigen (HLA) typing analysis in human population holds unexploited potential for elucidating the genetic causes of human disease and possibly leads to personalized medicine. This is a retrospective, descriptive study evaluating HLA frequencies of Omani individuals who underwent workup for kidney transplantation at the Royal Hospital (RH) from 2005 to 2016. Data on 870 subjects were collected from the Oman kidney transplant registry at RH as well from electronic medical record system...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28936946/genetic-tools-for-the-enhancement-of-probiotic-properties
#12
Laura Ortiz-Velez, Robert Britton
The Lactobacillus genus is a diverse group of microorganisms, many of which are of industrial and medical relevance. Several Lactobacillus species have been used as probiotics, organisms that when present in sufficient quantities confer a health benefit to the host. A significant limitation to the mechanistic understanding of how these microbes provide health benefits to their hosts and how they can be used as therapeutic delivery systems has been the lack of genetic strategies to efficiently manipulate their genomes...
September 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28936609/a-hierarchical-testing-strategy-for-micropollutants-in-drinking-water-regarding-their-potential-endocrine-disrupting-effects-towards-health-related-indicator-values
#13
Jochen Kuckelkorn, Regine Redelstein, Timon Heide, Jennifer Kunze, Sibylle Maletz, Petra Waldmann, Tamara Grummt, Thomas-Benjamin Seiler, Henner Hollert
In Germany, micropollutants that (may) occur in drinking water are assessed by means of the health-related indicator value (HRIV concept), developed by the German Federal Environment Agency. This concept offers five threshold values (≤ 0.01 to ≤ 3 μg l(-1)) depending on availability and completeness of data regarding genotoxicity, neurotoxicity, and germ cell-damaging potential. However, the HRIV concept is yet lacking integration of endocrine disruptors as one of the most prominent toxicological concerns in water bodies, including drinking water...
September 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28935760/ultrasound-reverses-chemo-resistance-in-breast-cancer-stem-cell-like-cells-by-altering-abcg2%C3%A2-expression
#14
Lijuan Guo, Pengfei Zheng, Huijun Fan, Haiyan Wang, Wenzhong Xu, Wenyan Zhou
Doxorubicin (DOX)-resistance in breast cancer largely results from the breast cancer stem cell-like cells (BCSCs) which could be targeted to improve the efficacy of chemotherapy. Cell permeabilization using microbubbles (MB) and ultrasound (US) have the potential for delivering molecules into the cytoplasm. We aim to evaluate a new methodology of US on BCSCs. First, our findings indicated that ALDHA1(+) spheres which were derived from fresh primary breast cancer samples displayed stem cell-like features and were resistant to DOX...
September 21, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28935631/cultural-crossings-of-care-an-appeal-to-the-medical-humanities
#15
Julia Kristeva, Marie Rose Moro, John Ødemark, Eivind Engebretsen
Modern medicine is confronted with cultural crossings in various forms. In facing these challenges, it is not enough to simply increase our insight into the cultural dimensions of health and well-being. We must, more radically, question the conventional distinction between the 'objectivity of science' and the 'subjectivity of culture'. This obligation creates an urgent call for the medical humanities but also for a fundamental rethinking of their grounding assumptions.Julia Kristeva (JK) has problematised the biomedical concept of health through her reading of the anthropogony of Cura (Care), who according to the Roman myth created man out of a piece of clay...
September 21, 2017: Medical Humanities
https://www.readbyqxmd.com/read/28935552/natural-products-applied-against-hydatid-cyst-protoscolices-a-review-of-past-to-present
#16
REVIEW
Mohammad Hasan Kohansal Koshki, Abbasali Nourian, Mohammad Taghi Rahimi, Ahmad Daryani, Adel Spotin, Ehsan Ahmadpour
Echinococcus granulosus is the causative agent of cystic echinococcosis (CE), which is distributed all around the world. CE is one of the most important global parasitic infectious diseases, both in humans and animals. This parasite causes hydatid cysts that can be lodge at different organs of host such as liver, lung even in heart and brain which may lead to death. Presently, numerous scolicidal chemical agents have been administrated for inactivation of the hydatid cyst contents. Because of increasing resistance and adverse effects of medications include abnormalities of liver function, abdominal pain, diarrhea, nausea, vomiting, dizziness, and headache; there is a need to find alternative therapies either with the least or without side effects...
September 18, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28935469/risk-of-guillain-barr%C3%A3-syndrome-following-quadrivalent-human-papillomavirus-vaccine-in-the-vaccine-safety-datalink
#17
Julianne Gee, Lakshmi Sukumaran, Eric Weintraub
OBJECTIVE: Describe the Vaccine Safety Datalink's (VSD) Guillain Barré Syndrome (GBS) surveillance following quadrivalent HPV vaccine (4vHPV) from 2006 through 2015. METHODS: Among 4vHPV vaccinated persons aged 9-26, ICD-9 coded GBS was identified in VSD's electronic data. Medical records were reviewed and adjudicated to confirm GBS. We calculated incidence rates of confirmed GBS within 1-42days following 4vHPV with a one-sided 95% confidence interval. RESULTS: Following 2,773,185 4vHPV doses, we confirmed 1 case of GBS in a male and no cases among females...
September 18, 2017: Vaccine
https://www.readbyqxmd.com/read/28935121/treatment-of-acute-ocular-chemical-burns
#18
REVIEW
Namrata Sharma, Manpreet Kaur, Tushar Agarwal, Virender S Sangwan, Rasik B Vajpayee
Ocular chemical burns are an ophthalmic emergency and are responsible for 11.5% to 22.1% of ocular injuries. Immediate copious irrigation is universally recommended in acute ocular burns to remove the offending agent and minimize damage. Conventional medical therapy consists of the use of agents that promote epithelialization, minimize inflammation, and prevent cicatricial complications. Biological fluids such as autologous serum, umbilical cord blood serum, platelet-rich plasma, and amniotic membrane suspension are a rich source of growth factors and promote healing when used as adjuncts to conventional therapy...
September 18, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28935021/-one-case-about-primary-pulmonary-squamous-cell-carcinoma-%C3%A2-with-retinal-metastasis
#19
Jinxia Liu, Xiqian Gao, Mindan Sun
Lung cancer is a common malignant tumor in clinic. Morbidity and mortality are the first place in cancer, which seriously threaten the health of human beings. Due to the lack of effective and specific screening methods, most patients were found already at an advanced stage, and often combined with bone, brain, liver, adrenal and other parts of the metastasis. Symptoms of patient resulted from the primary tumor, metastatic spread, or paraneoplastic syndrome commonly cause the medical attention. For the syndrome related to the distant metastatic spread as the first manifestation, diagnosis would be a challenge...
September 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28934979/human-resources-for-health-in-peru-recent-trends-2007-2013-in-the-labour-market-for-physicians-nurses-and-midwives
#20
M Michelle Jimenez, Anthony L Bui, Eduardo Mantilla, J Jaime Miranda
BACKGROUND: Most analyses of gaps in human resources for health (HRH) do not consider training and the transition of graduates into the labour market. This study aims to explore the labour market for Peru's recent medical, nursing, and midwifery graduates as well as their transition into employment in the Ministry of Health's (MOH) system. METHODS: Data from four different datasets, covering 2007-2013, was used to characterize the patterns of recently trained physicians, nurses, midwives, and postgraduate-trained physicians that enter employment in the MOH system, and scenario analyses were used to describe how this rate of entry needs to adapt in order to fill current HRH shortages...
September 21, 2017: Human Resources for Health
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