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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/28938783/phytochemicals-reduce-aflatoxin-induced-toxicity-in-chicken-embryos
#2
Hsin-Bai Yin, Chi-Hung Chen, Michael J Darre, Ann M Donoghue, Dan J Donoghue, Kumar Venkitanarayanan
Aflatoxins (AF) are toxic metabolites produced by molds, Aspergillus flavus and Aspergillus parasiticus, which frequently contaminate poultry feed ingredients. Ingestion of AF-contaminated feed by chickens leads to deleterious effects, including decreased bird performance and reduced egg production. Moreover, AF residues in fertilized eggs result in huge economic losses by decreasing embryo viability and hatchability. This study investigated the efficacy of 2 generally recognized as safe phytochemicals, namely carvacrol (CR) and trans-cinnamaldehyde (TC), in protecting chicken embryos from AF-induced toxicity...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938779/physical-and-chemical-characteristics-of-meat-from-broilers-raised-in-4-different-rearing-systems-stored-under-freezing-for-up-to-12-months
#3
A Giampietro-Ganeco, C M Owens, J L M Mello, R A Souza, F B Ferrari, P A Souza, H Borba
This study evaluated the effects of freezing (-18°C) for 12 mo on attributes related to the texture of breast, drumstick, and thigh from broilers raised in 4 different rearing systems. Five-hundred carcasses of male broilers raised in 4 rearing systems (Antibiotic-free, Cobb 500, n = 125; Free-range, Hubbard ISA, n = 125; Conventional, Cobb 500, n = 125; Organic, Cobb 500, n = 125) were divided into breast, drumstick, and thigh and stored under freezing (-18°C) for 3, 6, 9, and 12 months. Breast, drumstick, and thigh meat from broilers raised in all studied rearing systems showed reduction (P < 0...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938749/the-testicular-transcriptome-associated-with-spermatogonia-differentiation-initiated-by-gonadotrophin-stimulation-in-the-juvenile-rhesus-monkey-macaca-mulatta
#4
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/28938736/deep-sequencing-shows-that-oocytes-are-not-prone-to-accumulate-mtdna-heteroplasmic-mutations-during-ovarian-ageing
#5
L Boucret, C Bris, V Seegers, D Goudenège, V Desquiret-Dumas, M Domin-Bernhard, V Ferré-L'Hotellier, P E Bouet, P Descamps, P Reynier, V Procaccio, P May-Panloup
STUDY QUESTION: Does ovarian ageing increase the number of heteroplasmic mitochondrial DNA (mtDNA) point mutations in oocytes? SUMMARY ANSWER: Our results suggest that oocytes are not subject to the accumulation of mtDNA point mutations during ovarian ageing. WHAT IS KNOWN ALREADY: Ageing is associated with the alteration of mtDNA integrity in various tissues. Primary oocytes, present in the ovary since embryonic life, may accumulate mtDNA mutations during the process of ovarian ageing...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938719/population-wide-sampling-of-retrotransposon-insertion-polymorphisms-using-deep-sequencing-and-efficient-detection
#6
Qichao Yu, Wei Zhang, Xiaolong Zhang, Yongli Zeng, Yeming Wang, Yanhui Wang, Liqin Xu, Xiaoyun Huang, Nannan Li, Xinlan Zhou, Jie Lu, Xiaosen Guo, Guibo Li, Yong Hou, Shiping Liu, Bo Li
Active retrotransposons play important roles during evolution and continue to shape our genomes today, especially in genetic polymorphisms underlying a diverse set of diseases. However, studies of human retrotransposon insertion polymorphisms (RIPs) based on whole-genome deep sequencing at the population level have not been sufficiently undertaken, despite the obvious need for a thorough characterization of RIPs in the general population. Herein, we present a novel and efficient computational tool called Specific Insertions Detector (SID) for the detection of non-reference RIPs...
September 1, 2017: GigaScience
https://www.readbyqxmd.com/read/28938682/mental-health-of-the-old-and-new-generation-migrant-workers-in-china-who-are-at-greater-risk-for-psychological-distress
#7
Bao-Liang Zhong, Sandra S M Chan, Tie-Bang Liu, Dong Jin, Chi-Yi Hu, Helen F K Chiu
Rural-to-urban migrant workers (MWs) are a large vulnerable population in China and, recently, the new-generation MWs (those born in 1980 or later) have become the majority of this population. Examining difference in the epidemiology of poor mental health between the new- and old-generation (those born before 1980) MWs would facilitate mental health promotion efforts. However, very few related studies are available and they produced conflicting findings. This study investigated intergenerational difference in prevalence and correlates of psychological distress (PD) in MWs...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938666/general-anesthesia-exposure-and-risk-of-dementia-a-meta-analysis-of-epidemiological-studies
#8
Jingjing Jiang, Yunxia Dong, Wei Huang, Min Bao
The association between exposure to general anesthesia and dementia risk has been inconsistently reported across epidemiological studies. To better understand the association, we conducted a meta-analysis of epidemiological studies. PubMed and Embase were searched through April 2017. Random-effects models were used to pool association estimates. We further evaluated potential dose-response relationship. Based on literature search, seven prospective/cohort studies, 11 case-control studies, and a pooled analysis of six case-control studies were identified...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938640/association-of-two-obesity-related-gene-polymorphisms-lepg2548a-rs7799039-and-leprq223r-rs1137101-with-the-risk-of-breast-cancer
#9
Hui Luan, Hong Zhang, Ying Li, Ping Wang, Lifei Cao, Honglan Ma, Qing Cui, Gang Tian
Many studies have been performed to investigate the correlation of leptin (LEP) and leptin receptor (LEPR) polymorphisms with breast cancer (BC) risk, however the results are inconclusive. To obtain a more precise estimation, we conducted this meta-analysis. We searched PubMed, EMBASE, and Web of Science databases to identify qualified studies. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were used to evaluate the association. Eight eligible studies (2,124 cases and 5,476 controls) for LEP G2548A (rs7799039) polymorphism, and thirteen studies (5,282 cases and 6,140 controls) for LEPR Q223R (rs1137101) polymorphism were included in our study...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938523/hypothermia-induced-by-anesthesia-regulates-various-signals-expressions-in-the-hippocampus-of-animals
#10
Huimei Hao, Shanshan Wang
Though important for a variety of medical procedures, general anesthesia is not a problem free. Some anesthetics have been suggested to affect a number of signals, which are associated with memory consolidation and cognition. In the present study, we attempted to investigate the molecular mechanism of anesthesia-regulated processes. We found that under hypothermic condition, anesthetic of isoflurane enhances various signals expression in hippocampus, including Hspd1, Actb, Mgst1, THBS4, Syp, C1QC, Serpine, Plat, and Ngf, which were related to cellular stress, neural plasticity responses, and hippocampal injury...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28938521/beneficial-health-applications-and-medicinal-values-of-pedicularis-plants-a-review
#11
REVIEW
Mohd Iqbal Yatoo, Umesh Dimri, Arumugam Gopalakrishnan, Kumaragurubaran Karthik, Marappan Gopi, Rekha Khandia, Mani Saminathan, Archana Saxena, Mahmoud Alagawany, Mayada Ragab Farag, Ashok Munjal, Kuldeep Dhama
Pedicularis plants (Orobanchaceae), popularly known as lousewort, are found in Asia, Europe, and North America, and have been used in Sowa-Rigpa, the Himalayan art of healing and a traditional system of medicine for treating various ailments in humans. A comprehensive compilation on this valuable medicinal plant is not available, however. The present extensive review provides insight into the salient medicinal properties of Pedicularis plants with respect to various health issues and diseases. Our previous studies on Pedicularis plants from the Changthang region of Ladakh (India) and research advances leading to new developments in this field have prompted this review...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28938511/-obesity-and-kidney-disease-renal-consequences-of-an-epidemic
#12
Helmut Schiffl, Susanne Maria Lang
Overweight and obesity are widespread in the German population, affecting not only adults but also a significant number of children and adolescents. The risk to develop chronic kidney disease is markedly increased in overweight or adipose children, adolescents and adults.Overweight and obesity induced risk factors have a direct impact on the development of chronic renal disease (obesity-associated focal segmental glomerulosclerosis). They accelerate the progression of coexistent nephropathies (diabetic or hypertensive nephropathy, primary glomerulonephritides) and are independent risk factors for the development of acute kidney injury in critically ill patients...
September 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28938507/-hypertensive-emergencies
#13
Gerd Bönner
Hypertensive urgency and hypertensive emergency are associated with sudden, massive rise in blood pressure. An acute increase in blood pressure to values above 180/120 mmHg is considered critical. If not treated in time, it can quickly enter a life-threatening hypertensive emergency. The symptoms or organ damage determine the assessment as a crisis or an emergency. Rapid action is required. The therapy depends on the severity and the organ involvement. However the general principal is to avoid therapeutically induced hypotension...
September 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28938432/mitochondrial-function-regulated-by-mitoguardin-1-2-is-crucial-for-ovarian-endocrine-functions-and-ovulation
#14
Xiao-Man Liu, Yin-Li Zhang, Shu-Yan Ji, Long-Wen Zhao, Wei-Na Shang, Dali Li, Zijiang Chen, Chao Tong, Heng-Yu Fan
The balances of mitochondrial dynamic changes, mitochondrial morphology, and mitochondrial number are critical in cell metabolism. Once disturbed, disorders in these processes generally cause diseases or even death in animals. We performed large-scale genetic screenings in fruit flies and discovered the new gene mitoguardin (miga) that encodes for a mitochondrial outer membrane protein. In order to examine the physiological functions of its mammalian homologs Miga1 and 2, we generated Miga1 and Miga2 single- and double-knockout mouse strains and found that the knockout mice were viable, but the females were subfertile...
August 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938375/difficult-implant-removals
#15
Amy Voedisch, Michele Hugin
PURPOSE OF REVIEW: Subdermal contraceptive implant insertions have rapidly increased worldwide. These devices are usually removed 3-5 years after insertion. Although removals are generally straightforward, difficult removals can occur. This review discusses the overall approach to potentially problematic removals and the appropriate steps to avoid complications and safely remove implants. RECENT FINDINGS: Given the rapid uptake of contraceptive implants and subsequent need for removals, an Implants Removal Task Force was formed to create standard protocols for difficult implant removals worldwide...
September 21, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28938374/contraceptive-counseling-for-continuation-and-satisfaction
#16
Gillian B Schivone, Laura L Glish
PURPOSE OF REVIEW: Quality contraceptive counseling has been identified as a potential means to reduce unintended pregnancy and to increase contraceptive continuation and satisfaction. Past approaches that focused on autonomous decision making and directive counseling have not been shown to meet these goals consistently. Women's health organizations globally are calling for improved counseling through more thorough discussion of side-effects and bleeding changes, and renewed focus on shared decision making and patient-centered care...
September 21, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28938299/nonoperating-room-anesthesia-for-endoscopic-procedures
#17
Stephan Knigge, Klaus Hahnenkamp
PURPOSE OF REVIEW: The purpose of this review is to take a look on some practical aspects of anesthetic care in the endoscopy suite, concerning the general approach, safety, and monitoring issues. RECENT FINDINGS: Concerning propofol popularity for sedation during endoscopic procedures new studies create doubt in the safety of higher doses of propofol used for sedation. Careful titration of propofol, addition of synergistic supplements like ketamine and dexmedetomidine, and monitoring of anesthetic depth may limit the dose of propofol given to the patients...
September 21, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28938229/prevalence-and-correlates-of-comorbid-depression-in-a-nonclinical-online-sample-with-dsm-5-internet-gaming-disorder
#18
Hee Ryung Wang, Hyun Cho, Dai-Jin Kim
BACKGROUND: We investigated the prevalence and correlates of comorbid depression among patients with internet gaming disorder using the Internet Gaming Disorder scale (IGD-9) and the Patient Health Questionnaire-9 (PHQ-9) among nonclinical online survey respondents. METHODS: Korean adolescents and adults from 14 to 39 years of age were selected. We compared internet gaming use patterns and sociodemographic and clinical variables between patients with internet gaming disorder who had depression and those without depression...
August 10, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28938183/age-trends-in-rates-of-substance-use-disorders-across-ages-18-90-differences-by-gender-and-race-ethnicity
#19
Sara A Vasilenko, Rebecca J Evans-Polce, Stephanie T Lanza
BACKGROUND: Although research has documented age differences in substance use, less is known about how prevalence of substance use disorders (SUDs) vary across age and differ by gender and race/ethnicity. METHODS: Time-varying effect models (TVEMs) were estimated on data from the National Epidemiologic Survey of Alcohol and Related Conditions-III (NESARC III; N=36,309), a nationally representative survey of the adult population. The sample was 44% male; 53% White, 21% Black, 19% Hispanic/Latino, 6% other race/ethnicity...
September 14, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28938180/-asking-the-hard-questions-improving-midwifery-students-confidence-with-domestic-violence-screening-in-pregnancy
#20
Rachel Smith, Raechel Wight, Caroline S E Homer
Domestic violence is a global public health issue. Midwives are ideally placed to screen for, and respond to, disclosure of domestic violence. Qualified midwives and midwifery students report a lack of preparedness and low levels of confidence in working with women who disclose domestic violence. This paper reports the findings from an education intervention designed to increase midwifery students' confidence in working with pregnant women who disclose domestic violence. An authentic practice video and associated interactive workshop was developed to bring the 'woman' into the classroom and to provide role-modelling of exemplary midwifery practice in screening for and responding to disclosure of domestic violence...
May 22, 2017: Nurse Education in Practice
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