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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/28938792/gastrointestinal-microbial-population-of-turkey-meleagris-gallopavo-affected-by-hemorrhagic-enteritis-virus
#2
Sara D'Andreano, Armand Sànchez Bonastre, Olga Francino, Anna Cuscó Martí, Cristina Lecchi, Guido Grilli, Davide Giovanardi, Fabrizio Ceciliani
Hemorrhagic enteritis (HE) is an acute viral disease that affects avian species, particularly turkeys, compromising their commercial production and having a negative effect on animal welfare. Turkey adenovirus 3 (TAdV-3), is the main causal agent of the disease. In this study, we considered 3 groups of turkeys to achieve 2 purposes: 1) A preliminary investigation on the microbiota content in the 4 parts of healthy turkey's intestine (group A), namely duodenum, jejunum, ileum, and ceca was done; 2) an investigation on the relationship between natural infections with TAdV-3 and the intestinal microbiota in the jejunum, where HE mostly develops, comparing group A with animals with molecular positivity for the virus and with clinical signs of HE (group B) and animals with molecular positivity for the virus but without clinical signs (group C)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938790/factors-affecting-adipose-tissue-development-in-chickens-a-review
#3
Guoqing Wang, Woo Kyun Kim, Mark A Cline, Elizabeth R Gilbert
The intense genetic selection for rapid growth in broilers has resulted in an increase in voluntary feed intake and growth rate, accompanied by increased fat deposition in adipose tissue depots throughout the body. Adipose tissue expansion is a result of the formation of adipocytes (several processes collectively referred to as adipogenesis) and cellular accumulation of triacylglycerols inside lipid droplets. In mammals, different anatomical depots are metabolically distinct. The molecular and cellular mechanisms underlying adipose tissue development have been characterized in mammalian models, whereas information in avian species is scarce...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938789/impacts-of-dietary-calcium-phytate-and-phytase-on-inositol-hexakisphosphate-degradation-and-inositol-phosphate-release-in-different-segments-of-digestive-tract-of-broilers
#4
W Li, R Angel, S-W Kim, K Brady, S Yu, P W Plumstead
A total of 720 straight-run Heritage 56 M × fast feathering Cobb 500F broiler chickens was fed from 11 to 13 d of age to determine the impacts of dietary calcium (Ca), phytate phosphorus (PP), and phytase concentrations on inositol phosphate (IP3-6) profile in different digestive tract (GI) segments. The experiment was a 2 × 2 × 3 randomized block design with 2 Ca (0.7 and 1.0%) and 2 PP (0.23 and 0.34%) concentrations and 3 doses of Buttiauxella sp. phytase (0, 500, and 1,000 FTU/kg). The experiment was replicated in time (block) with 3 replicates per treatment (Trt) of 10 birds per block...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938783/phytochemicals-reduce-aflatoxin-induced-toxicity-in-chicken-embryos
#5
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/28938782/perch-use-by-broiler-breeders-and-its-implication-on-health-and-production
#6
S G Gebhardt-Henrich, M J Toscano, H Würbel
Broiler breeders are commonly kept without perches, although perching has been shown to be a high-priority behavior in laying hens. We studied whether broiler breeders used elevated perches of different lengths during the night and how access to perches affected health and production. Using the Ross 308 hybrid, pens offering 4 different perch spaces per bird (5, 10, 14, and 20 cm) in a cross-over design were compared with pens without perches. The number of birds on perches at midnight were recorded 7 times during production...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938781/differences-in-egg-nutrient-availability-and-embryo-development-in-white-layer-breeder-genotypes
#7
E E Onbasilar, M Kahraman, O Ahlat, Ö F Güngör, A Çalik, S Taban, S Yalçin
Because of consumers' preferences and also due to changes in production systems, the importance of pure breeds has increased again. There are a lot of differences among breeds which have been studied extensively, however, the differences during the incubation period are not yet fully known. Therefore, the present study was conducted to evaluate the composition of the egg parts, absorption of nutrients, and development of embryos from different genotypes. A total of 354 fresh hatching eggs were obtained from one hybrid (Lohman White, LW) and two pure breeds (Denizli and Gerze)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938780/effects-of-dietary-threonine-supplementation-on-intestinal-barrier-function-and-gut-microbiota-of-laying-hens
#8
X Y Dong, M M M Azzam, X T Zou
The effects of supplemental dietary threonine (Thr) on laying performance, expression of intestinal mucin 2 (MUC2) and secretory IgA (sIgA), and intestinal microbiota of laying hens fed a low CP diet were investigated. A total of 240 Lohmann Brown laying hens, 28 wk of age, was allocated to 3 dietary treatments, each of which included 5 replicates of 16 hens. Hens were fed a control diet (16% CP), a low CP diet (14% CP), or a low CP diet supplemented with 0.3% L-Thr for 12 weeks. Chemical analyses of the diets for Thr are 0...
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
#9
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/28938778/comparison-of-hatching-egg-characteristics-embryo-development-yolk-absorption-hatch-window-and-hatchability-of-pekin-duck-eggs-of-different-weights
#10
A Ipek, A Sozcu
This study was carried out to determine the hatching egg characteristics, embryo development and yolk absorption during incubation, hatch window, and hatchability of Pekin duck eggs of different weights. A total of 960 hatching eggs was obtained from a breeder flock 35 to 36 wk of age. The eggs were classed into 3 weight categories: "light" (L; <75 g), "medium" (M; 76 to 82 g), and "heavy" (H; >83 g). The albumen weight was the highest in the heavy eggs, whereas the yolk weight was higher in the medium and heavy eggs...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938777/role-of-vasoactive-intestinal-peptide-during-the-transition-from-incubation-behavior-to-rearing-behavior-in-the-female-native-thai-chicken
#11
S Namken, P Sinpru, B Kamkrathok, N Sartsoongnoen, Y Chaiseha
It is well documented that vasoactive intestinal peptide (VIP) is an avian prolactin-releasing factor, regulating the reproductive cycle, that initiates and maintains incubation behavior in avian species. Native Thai chicken has strong maternal behaviors. Thus, it is an excellent animal model to study this phenomenon. Changes in the numbers of VIP neurons within the nucleus inferioris hypothalami (IH) and nucleus infundibuli hypothalami (IN) are associated with maternal behaviors in the native Thai chicken...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938774/evaluation-of-encapsulated-sodium-butyrate-on-growth-performance-energy-digestibility-gut-development-and-salmonella-colonization-in-broilers
#12
J D Liu, H O Bayir, D E Cosby, N A Cox, S M Williams, J Fowler
Two experiments were conducted to determine the effect of an encapsulated sodium butyrate (Na-B) with targeted releasing times on broiler performance, energy digestibility, intestinal morphology, and ceca Salmonella colonization. In experiment 1, 3 different Na-B products (CMA, CMP, and CMS) were evaluated following a challenge with a nalidixic acid-resistant Salmonella typhimurium (STNAR). Cobb-Cobb male birds were placed 8 per pen into 6 replicates for each treatment. Treatments included 6 Na-B treatments (500 and 1,000 ppm of each product) plus 2 control (non-challenged and challenged)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938738/resolution-of-infertility-and-number-of-children-1386-couples-followed-for-a-median-of-13-years
#13
A A Righarts, A Gray, N P Dickson, L Parkin, W R Gillett
STUDY QUESTION: How common were children among infertile couples? SUMMARY ANSWER: A total of 61.7% of infertile couples presenting for care subsequently had live born children 13.1 years after first being clinically assessed, with a mean of 1.7 children among those who had at least one. WHAT IS KNOWN ALREADY: While the prognoses for infertile couples undertaking specific treatments have been well described, less is known about those not undergoing these treatments or the total number of children...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938732/prevalence-of-occult-leiomyosarcomas-and-atypical-leiomyomas-after-laparoscopic-morcellation-of-leiomyomas-in-reproductive-age-women
#14
G Pados, D Tsolakidis, V Theodoulidis, A Makedos, T Zaramboukas, B Tarlatzis
STUDY QUESTION: What is the prevalence of leiomyosarcomas and atypical leiomyomas after laparoscopic morcellation of fibroids in reproductive age women? SUMMARY ANSWER: No case of leiomyosarcomas but seven atypical leiomyomas were found in 1216 subjects. WHAT IS KNOWN ALREADY: Although uterine sarcoma is a rare entity affecting usually older peri- or post-menopausal women, the Food and Drug Administration discourages use of laparoscopic power morcellation of uterine fibroids...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938712/invited-commentary-the-need-for-cognitive-science-in-methodology
#15
Sander Greenland
There is no complete solution for the problem of abuse of statistics, but methodological training needs to cover cognitive biases and other psychosocial factors affecting inferences. The present paper discusses 3 common cognitive distortions: 1) dichotomania, the compulsion to perceive quantities as dichotomous even when dichotomization is unnecessary and misleading, as in inferences based on whether a P value is "statistically significant"; 2) nullism, the tendency to privilege the hypothesis of no difference or no effect when there is no scientific basis for doing so, as when testing only the null hypothesis; and 3) statistical reification, treating hypothetical data distributions and statistical models as if they reflect known physical laws rather than speculative assumptions for thought experiments...
September 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28938699/change-from-lung-adenocarcinoma-to-small-cell-lung-cancer-as-a-mechanism-of-resistance-to-afatinib
#16
Paolo Manca, Marco Russano, Francesco Pantano, Giuseppe Tonini, Daniele Santini
We report the case of a patient affected by advanced EGFR mutation-positive lung who experienced resistance to therapy during treatment with Afatinib through the occurrence of a switch of tumor histotype to small cell lung cancer (SCLC) with features of a G3 neuroendocrine carcinoma. Unexpectedly, the switch to SCLC histotype occurred in the only site not responsive to afatinib and subsequently the most responsive to chemotherapy. Our case shows that occurrence of switch to SCLC is a possible mechanism of resistance during treatment with Afatinib...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938645/sex-specific-association-of-sh2b3-and-smarca4-polymorphisms-with-coronary-artery-disease-susceptibility
#17
Yuqiang Ji, Yanbin Song, Qingwen Wang, Pengcheng Xu, Zhao Zhao, Xia Li, Nan Wang, Tianbo Jin, Chao Chen
To determine whether sex differences affect the association between genetic polymorphisms and coronary artery disease (CAD) in the Chinese Han population, we conducted a study comparing the frequency of SH2B3 and SMARCA4 variants in 456 CAD patients (291 men, 165 women) and 685 age-matched controls (385 men, 300 women). Ten single nucleotide polymorphisms (SNPs) in SH2B3 and SMARCA4 were genotyped using MassARRAY technology. Allelic and genotypic models and haplotype frequencies were compared between groups...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938633/mir-543-promotes-colorectal-cancer-proliferation-and-metastasis-by-targeting-klf4
#18
Fangbing Zhai, Chunhong Cao, Liang Zhang, Jianhua Zhang
Till now, miR-543 expression has been demonstrated to be involved in the development of some cancers. However, reports about its expression and mechanism in colorectal cancer (CRC) were conflicting [1, 2]. Here, we investigated clinical implications of miR-543 and mechanisms underlying miR-543-mediated CRC development. In this study, real-time quantitative PCR (qRT-PCR) validated miR-543 was highly expressed in CRC samples and cell lines. MiR-543 was closely associated with tumor size, TNM stage and metastasis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938610/ghrelin-produces-antidepressant-like-effect-in-the-estrogen-deficient-mice
#19
Jie Fan, Bing Jin Li, Xue Feng Wang, Li Li Zhong, Ran Ji Cui
Recent evidence shows that ghrelin plays an important role in depression. However, it was little known whether ghrelin produces antidepressant-like effect in the ovariectomized mice. The present study was aimed to investigate the antidepressant-like effects of the ghrelin in ovariectomized mice. In the forced swim test, ghrelin significantly decreased immobility time, reversing the "depressive-like" effect observed in ovariectomized mice, and this effect was reversed by the tamoxifen. In addition, immunohistochemical study indicated that ghrelin treatment reversed the reductions in c-Fos expression induced by ovariectomy...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938609/pegylated-arginine-deiminase-can-modulate-tumor-immune-microenvironment-by-affecting-immune-checkpoint-expression-decreasing-regulatory-t-cell-accumulation-and-inducing-tumor-t-cell-infiltration
#20
Elena Brin, Katherine Wu, Hsin-Tze Lu, Yudou He, Zhaoming Dai, Wei He
PEGylated arginine deiminase (ADI-PEG 20) is being investigated in clinical studies in arginine auxotrophic cancers and is well-tolerated. The anti-tumor properties of ADI-PEG 20 have been extensively investigated - ADI-PEG 20 inhibits the growth of auxotrophic cancers in vitro and in vivo - however, its impact on immune cells is largely unknown. Here we report the potential impact of ADI-PEG 20 on the tumor immune microenvironment. ADI-PEG 20 induced immunosuppressive programmed death-ligand 1 expression on some cancer cells in vitro, but the magnitude of the increase was cell line dependent and in most relatively small...
August 29, 2017: Oncotarget
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