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https://www.readbyqxmd.com/read/28938796/complex-interactions-of-circadian-rhythms-eating-behaviors-and-the-gastrointestinal-microbiota-and-their-potential-impact-on-health
#1
Jennifer L Kaczmarek, Sharon V Thompson, Hannah D Holscher
Human health is intricately intertwined with the composition and function of the trillions of microorganisms that make up the gastrointestinal (GI) microbiome. The GI microbiome is essentially a microbial organ that provides metabolic, immunologic, and protective functions for the host. Habitual diet, changes in macronutrient composition, and consumption of nondigestible dietary fibers have all been shown to impact the human GI microbiome. Intriguingly, the impact of diet on the microbiome may be related not only to what humans eat but also to the timing of food consumption...
September 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28938751/new-permeable-cryoprotectant-free-vitrification-method-for-native-human-sperm
#2
J Aizpurua, L Medrano, M Enciso, J Sarasa, A Romero, M A Fernández, M J Gómez-Torres
STUDY QUESTION: Is permeable cryoprotectant-free vitrification of native sperm samples a good alternative to conventional slow freezing? SUMMARY ANSWER: The permeable cryoprotectant-free sperm vitrification protocol tested in this study renders considerably better recovery rates of good quality sperm compared to slow freezing. WHAT IS KNOWN ALREADY: Slow freezing is currently the most commonly used technique for sperm cryopreservation, though this method has been repeatedly shown to have negative effects on both structural and functional sperm features...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938720/deep-whole-genome-sequencing-of-90-han-chinese-genomes
#3
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/28938719/population-wide-sampling-of-retrotransposon-insertion-polymorphisms-using-deep-sequencing-and-efficient-detection
#4
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/28938687/mediastinal-lesions-across-the-age-spectrum-a-clinicopathological-comparison-between-pediatric-and-adult-patients
#5
Tingting Liu, Lika'a Fasih Y Al-Kzayer, Xiao Xie, Hua Fan, Shamil Naji Sarsam, Yozo Nakazawa, Lei Chen
The objective of this study was to identify the differences in histopathological distribution and clinical features of mediastinal lesions (MLs) across the age spectrum in Chinese series of patients and to compare with the available literature. A total of 409 cases of MLs, including 137 pediatric and 272 adult patients from a single institution, was reviewed and categorized into groups according to age. Among the 409 cases, the age showed a bimodal distribution with an increased incidence of MLs among (< 10 year) and (60-< 70 year) age groups...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938666/general-anesthesia-exposure-and-risk-of-dementia-a-meta-analysis-of-epidemiological-studies
#6
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/28938645/sex-specific-association-of-sh2b3-and-smarca4-polymorphisms-with-coronary-artery-disease-susceptibility
#7
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/28938635/distribution-of-circulating-tumor-dna-in-lung-cancer-analysis-of-the-primary-lung-and-bone-marrow-along-with-the-pulmonary-venous-and-peripheral-blood
#8
Taichiro Goto, Yosuke Hirotsu, Kenji Amemiya, Takahiro Nakagomi, Daichi Shikata, Yujiro Yokoyama, Kenichiro Okimoto, Toshio Oyama, Hitoshi Mochizuki, Masao Omata
Circulating tumor DNA (ctDNA), extracted from plasma, is a non-invasive surrogate biomarker. However, the distribution of ctDNA in the body still remains to be elucidated. In this study, resected lung tumors, with simultaneous blood and bone marrow samples, were analyzed to elucidate the distribution of ctDNA. Rib bone marrow, pulmonary venous blood (Pul.V) and peripheral blood (Peri.B) were obtained from 30 patients. The liquid samples were divided into cell pellets and supernatant by centrifugation; a total of 212 DNA samples were subjected to massively parallel sequencing...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938632/the-%C3%AE-secretase-inhibitors-enhance-the-anti-leukemic-activity-of-ibrutinib-in-b-cll-cells
#9
Paola Secchiero, Rebecca Voltan, Erika Rimondi, Elisabetta Melloni, Emmanouil Athanasakis, Veronica Tisato, Stefania Gallo, Gian Matteo Rigolin, Giorgio Zauli
Ibrutinib blocks B-cell receptor signaling and interferes with leukemic cell-to-microenvironment interactions. Ibrutinib plays a key role in the management of B-CLL and is recommended for first line treatment of high-risk CLL patients with 17p deletion. Therefore, elucidating the factors governing sensitivity/resistance to Ibrutinib represents a relevant issue. For this purpose, in 3 B-CLL patient samples harboring functional TP53 mutations, the frequency of the mutated clones was monitored during in vivo Ibrutinib therapy, revealing a progressive decline of the frequency of TP53(mut) clones during 12 months of treatment...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938590/ocular-toxicities-associated-with-targeted-anticancer-agents-an-analysis-of-clinical-data-with-management-suggestions
#10
Chen Fu, Dan S Gombos, Jared Lee, Goldy C George, Kenneth Hess, Andrew Whyte, David S Hong
Ocular toxicities are among the most common adverse events resulting from targeted anticancer agents and are becoming increasingly relevant in the management of patients on these agents. The purpose of this study is to provide a framework for management of these challenging toxicities based on objective data from FDA labels and from analysis of the literature. All oncologic drugs approved by the FDA up to March 14, 2015, were screened for inclusion. A total of 16 drugs (12 small-molecule drugs and 4 monoclonal antibodies) were analyzed for ocular toxicity profiles based on evidence of ocular toxicity...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938536/integrating-omics-data-and-protein-interaction-networks-to-prioritize-driver-genes-in-cancer
#11
Tiejun Zhang, Di Zhang
Although numerous approaches have been proposed to discern driver from passenger, identification of driver genes remains a critical challenge in the cancer genomics field. Driver genes with low mutated frequency tend to be filtered in cancer research. In addition, the accumulation of different omics data necessitates the development of algorithmic frameworks for nominating putative driver genes. In this study, we presented a novel framework to identify driver genes through integrating multi-omics data such as somatic mutation, gene expression, and copy number alterations...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938512/numerical-simulation-of-scaling-up-for-aec-mbrs-regarding-membrane-module-configurations-and-cyclic-aeration-modes
#12
Min Yang, Mengmeng Liu, Dawei Yu, Jiaxi Zheng, Zhichao Wu, Shuguang Zhao, Jiang Chang, Yuansong Wei
The airlift external circulation membrane bioreactors (AEC-MBRs) have been attracting attentions due to their capabilities of nutrient removal with lower energy demand and smaller footprint. The gap between laboratory study and full-scale AEC-MBRs regarding hydrodynamics needs to be addressed. In this study, impacts of seven design variables and cyclic aeration modes on hydrodynamics were studied for the scale-up of AEC-MBRs with computational fluid dynamics modelling. The results demonstrated that shear stress on membranes was 14...
September 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28938486/the-two-populations-of-kisspeptin-neurons-are-involved-in-the-ram-induced-lh-pulsatile-secretion-and-lh-surge-in-anestrous-ewes
#13
C Fabre-Nys, J Cognié, L Dufourny, M S Ghenim, S Martinet, O Lasserre, D Lomet, R P Millar, S Ohkura, Y Suetomi
Exposure to a ram during spring stimulates luteinizing hormone (LH) secretion and can induce ovulation in sexually quiescent ewes ("ram effect"). Kisspeptins (Kiss) present in the arcuate nucleus (ARC) and the preoptic area (POA) are potent stimulators of LH secretion. Our aim was to investigate if Kiss neurons mediate the increase in LH secretion during the "ram effect". With double immunofluorescent detection we identified Kiss neurons (Kiss IR) activated (Fos IR) by exposure to a ram for 2h (M2), 12h (M12) or to ewes for 2h (C)...
September 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938466/optogenetic-analysis-of-depolarization-dependent-glucagon-like-peptide-1-release
#14
Catalin Chimerel, Cristian Riccio, Keir Murison, Fiona M Gribble, Frank Reimann
Incretin hormones play an important role in the regulation of food intake and glucose homeostasis. Glucagon-like peptide-1 (GLP-1) secreting cells have been demonstrated to be electrically excitable and to fire action potentials (APs) with increased frequency in response to nutrient exposure. However, nutrients can also be metabolised or activate G-protein-coupled receptors, thus potentially stimulate GLP-1 secretion independent of their effects on the plasma membrane potential. Here we used channelrhodopsins to manipulate the membrane potential of GLUTag cells, a well established model of GLP-1 secreting enteroendocrine L-cells...
July 28, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938418/androgens-support-male-acrobatic-courtship-behavior-by-enhancing-muscle-speed-and-easing-the-severity-of-its-trade-off-with-force
#15
Matthew J Fuxjager, Meredith C Miles, Franz Goller, John Petersen, Julia Yancey
Steroid hormone action in the brain regulates many animals' elaborate social displays used for courtship and competition, but it is increasingly recognized that the periphery may also be a site for potent steroidal modulation of complex behavior. However, the mechanisms of such "bottom up" regulation of behavioral outflow are largely unclear. To study this problem, we examine how androgenic sex hormones act through the skeletal muscular system to mediate elaborate courtship acrobatics in a tropical bird called the golden-collared manakin...
August 29, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938398/long-term-recordings-of-arcuate-nucleus-kisspeptin-neurons-reveal-patterned-activity-that-is-modulated-by-gonadal-steroids-in-male-mice
#16
Charlotte Vanacker, Manuel Ricu Moya, R Anthony DeFazio, Michael L Johnson, Suzanne M Moenter
Pulsatile release of GnRH is key to fertility. Pulse frequency is modulated by gonadal steroids and likely arises subsequent to coordination of GnRH neuron firing activity. The source of rhythm generation and the site of steroid feedback remain critical unanswered questions. Arcuate neurons that synthetize kisspeptin, neurokinin B and dynorphin (KNDy neurons) may be involved in both of these processes. We tested the hypotheses that action potential firing in KNDy neurons is episodic and that gonadal steroids regulate this pattern...
July 28, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938334/the-morphological-grading-and-comparison-of-sutural-patency-among-cranial-sutures-in-dry-human-skulls
#17
Sibel Cirpan, Abdurrahman Orhan Magden, Nuket Gocmen Mas, Mete Edizer, Funda Aksu, Goksin Nilufer Yonguc
OBJECTIVE: To investigate the degree of fusion (patency) among cranial sutures in human dry skulls in the Anatolia. METHODS: One-hundred fifty-eight human dry skulls that were accepted as adults according to the teeth eruption were macroscopically examined and photographed with Canon 400B (55 mm objective). The grades of fusion of coronal, sagittal, and lambdoid were quantitatively analyzed by using the modified grading scale. According to the extent of patency, the sutures were graded as grade-0 (open), grade-1 (fused but not obliterated), grade-2 (50%< obliterated), grade-3 (50% > obliterated), and grade-4 (100% obliterated)...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938329/mandibular-osteomyelitis-and-cervical-lymphadenitis-due-to-mycobacterium-abscessus-surgical-management-of-a-pediatric-cohort-with-a-shared-epidemiologic-exposure
#18
Peter W Thompson, Joseph K Williams
BACKGROUND: Mycobacterium abscessus has been implicated as the cause of various infections in the setting of healthcare-related "outbreaks." Mandibular osteomyelitis caused by M abscessus is exceedingly rare, with only 1 patient reported in the literature. The authors describe the surgical management of 12 pediatric patients with M abscessus-related mandibular osteomyelitis and cervical lymphadenitis caused by exposure to contaminated water at a regional dental clinic. METHODS: Following institutional review board approval, new suspected patients were reviewed and followed prospectively...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938314/surgical-success-of-tympanoplasty-using-composite-tragal-cartilage-in-chronic-otitis-media
#19
Mehmet Melih Çiçek, Hakan Avci, Bayram Şahin, Şenol Acar, Beldan Polat, Mehmet Çelik, Kadir Serkan Orhan
This study aims to investigate the preoperative, postoperative airway hearing threshold levels, and perforation closure rates in patients who underwent primary tragal cartilage tympanoplasty. One hundred seventy-one patients who had chronic otitis media without cholesteatoma underwent primary tragal cartilage tympanoplasty with endaural approach by using underlay technique. Preoperative and postoperative airway hearing threshold levels at 500, 1000, 2000, 4000 Hz frequencies in 8 to 99 months' follow-up were found and compared with each other...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938297/new-advancements-in-spinal-cord-stimulation-for-chronic-pain-management
#20
Jijun Xu, Aijun Liu, Jianguo Cheng
PURPOSE OF REVIEW: To update the recent development of spinal cord stimulation (SCS) technology in the management of chronic pain. RECENT FINDINGS: Efficacy of SCS therapy has been significantly improved by the recent development of high frequency (HF-10 kHz) stimulation, burst stimulation, and dorsal root ganglion (DRG) stimulation. A few latest SCS modalities are in clinical trial. New approaches to guide lead placement and advances in surgical lead are introduced...
September 21, 2017: Current Opinion in Anaesthesiology
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