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https://www.readbyqxmd.com/read/29161801/impact-of-sarcopenia-on-long-term-mortality-and-cardiovascular-events-in-patients-undergoing-hemodialysis
#1
Jwa-Kyung Kim, Sung Gyun Kim, Ji-Eun Oh, Young-Ki Lee, Jung-Woo Noh, Hyung Jik Kim, Young Rim Song
Background/Aims: A high body mass index (BMI) is known to correlate with better survival in patients on hemodialysis (HD). However, the impacts of body composition and sarcopenia on survival have not been well studied in this population. Methods: One hundred and forty-two prevalent HD patients were recruited and followed prospectively for up to 4.5 years. Low muscle mass (measured using a portable, whole-body, bioimpedance spectroscopic device) was defined as a lean tissue index (LTI) two standard deviations (SD) or more below the normal gender-specific mean for young people...
November 23, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29161774/building-trophic-specializations-that-result-in-substantial-niche-partitioning-within-a-young-adaptive-radiation
#2
Luz Patricia Hernandez, Dominique Adriaens, Christopher H Martin, Peter C Wainwright, Bert Masschaele, Manuel Dierick
Dietary partitioning often accompanies the increased morphological diversity seen during adaptive radiations within aquatic systems. While such niche partitioning would be expected in older radiations, it is unclear how significant morphological divergence occurs within a shorter time period. Here we show how differential growth in key elements of the feeding mechanism can bring about pronounced functional differences among closely related species. An incredibly young adaptive radiation of three Cyprinodon species residing within hypersaline lakes in San Salvador Island, Bahamas, has recently been described...
November 21, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29161719/palmitic-acid-curcumin-ester-facilitates-protection-of-neuroblastoma-against-oligomeric-a%C3%AE-40-insult
#3
Zhangyang Qi, Meihao Wu, Yun Fu, Tengfei Huang, Tingting Wang, Yanjie Sun, Zhibo Feng, Changzheng Li
BACKGROUND/AIMS: The generation of reactive oxygen species (ROS) caused by amyloid-β (Aβ) is considered to be one of mechanisms underlying the development of Alzheimer's disease. Curcumin can attenuate Aβ-induced neurotoxicity through ROS scavenging, but the protective effect of intracellular curcumin on neurocyte membranes against extracellular Aβ may be compromised. To address this issue, we synthesized a palmitic acid curcumin ester (P-curcumin) which can be cultivated on the cell membrane and investigated the neuroprotective effect of P-curcumin and its interaction with Aβ...
November 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29161714/a-rare-cause-of-male-infertility-45-x-46-xy-mosaicism
#4
Emre Can Akinsal, Numan Baydilli, Ruslan Bayramov, Oguz Ekmekcioglu
OBJECTIVE: To present the clinical, chromosomal, and endocrinological features of 8 infertile male cases with the 45,X/46,XY karyotype who were admitted to our infertility clinic. MATERIALS AND METHODS: The records of cases who were admitted to our infertility clinic between 1999 and 2015 were investigated. Eight cases with 45,X/46,XY were detected. The clinical, endocrinological, and chromosomal assessments were analyzed. Each patient's height, weight, body mass index, testicular volume, endocrine hormone levels, follow-up period semen analysis, testicular biopsy reports, and karyotype analysis were evaluated retrospectively...
November 21, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/29161652/impact-of-body-mass-index-on-the-clinical-outcomes-of-patients-with-her2-positive-metastatic-breast-cancer
#5
Samuel Martel, Elena Poletto, Arlindo R Ferreira, Matteo Lambertini, Federico Sottotetti, Ilaria Bertolini, Filippo Montemurro, Antonio Bernardo, Emanuela Risi, Elisa Zanardi, Serena Ziliani, Silvia Mura, Chiara Dellepiane, Lucia Del Mastro, Alessandro Marco Minisini, Fabio Puglisi
BACKGROUND: Overweight and obesity are associated with an increased risk of developing many types of cancer, including breast cancer. Moreover, increased body mass index (BMI) seems to be associated with a worse prognosis in patients with HER2-positive early breast cancer. However, little is known about the impact of BMI on the clinical outcomes of HER2-positive metastatic breast cancer (MBC). METHODS: This was a multicenter retrospective cohort study including 329 consecutive patients with HER2-positive MBC treated with first-line trastuzumab-based regimens...
November 18, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29161647/simple-synthesis-of-self-supported-hierarchical-aupd-alloyed-nanowire-networks-for-boosting-electrocatalytic-activity-toward-formic-acid-oxidation
#6
Tao Yuan, Hong-Yan Chen, Xiaohong Ma, Jiu-Ju Feng, Pei-Xin Yuan, Ai-Jun Wang
Herein, self-supported hierarchical AuPd alloyed interconnected nanowire networks (AuPd NCNs) were fabricated by a one-pot co-reduction method. Theophylline was acted as the capping and structure-directing agents. The product was mainly characterized by a series of techniques such as transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The hierarchical nanostructures had the enlarged electrochemically active surface area (EASA), and the enhanced catalytic activity toward formic acid oxidation reaction (FAOR) and strengthened poisoning tolerance for poisoning CO-like intermediates by cyclic voltammetry and chronoamperometry, which outperformed commercial Pd black catalyst...
November 6, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29161611/the-application-of-ion-mobility-mass-spectrometry-to-metabolomics
#7
REVIEW
Xing Zhang, Kevin Quinn, Charmion Cruickshank-Quinn, Richard Reisdorph, Nichole Reisdorph
Mass spectrometry-based metabolomics is being increasingly utilized in various research fields including investigating human diseases, nutrition, industrial applications, and plant/natural products studies. Although new analytical approaches have enhanced the performance of metabolomic analyses, significant challenges associated with throughput, metabolome coverage, and compound identification still exist. Ion mobility mass spectrometry offers great potential for improving throughput and depth of coverage in metabolomics experiments...
November 18, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/29161609/cancers-in-france-in-2015-attributable-to-high-body-mass-index
#8
Melina Arnold, Marina Touillaud, Laure Dossus, Heinz Freisling, Freddie Bray, Irène Margaritis, Valérie Deschamps, Isabelle Soerjomataram
BACKGROUND: Overweight, as defined by high body mass index (BMI), is an established risk factor for various morbidities including cancer. Globally, its prevalence has increased markedly over the past decades. The aim of this study was to estimate the proportion and number of cancers that were attributable to high BMI in France in 2015. METHODS: Population attributable fractions (PAFs) and numbers of cancer cases attributable to high BMI (a population mean BMI above the optimum of 22kg/m(2)) were estimated by age and sex, for cancer sites with convincing or probable evidence of an established causal link...
November 18, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/29161603/-37-cl-compound-specific-isotope-analysis-and-assessment-of-functional-genes-for-monitoring-monochlorobenzene-mcb-biodegradation-under-aerobic-conditions
#9
Massimo Marchesi, Luca Alberti, Orfan Shouakar-Stash, Ilaria Pietrini, Francesca de Ferra, Giovanna Carpani, Ramon Aravena, Andrea Franzetti, Tatiana Stella
A laboratory approach was adopted in this study to explore the potential of (37)Cl-CSIA in combination with (13)C-CSIA and Biological Molecular Tools (BMTs) to estimate the occurrence of monochloroenzene (MCB) aerobic biodegradation. A new analytical method for (37)Cl-CSIA of MCB was developed in this study. This methodology using a GC-IRMS allowed to determine δ(37)Cl values within an internal error of ±0.3‰. Samples from a heavily MCB contaminated site were collected and MCB aerobic biodegradation microcosms with indigenous cultures in natural and enhanced conditions were set up...
November 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29161600/monitoring-wastewater-for-assessing-community-health-sewage-chemical-information-mining-scim
#10
Christian G Daughton
Timely assessment of the aggregate health of small-area human populations is essential for guiding the optimal investment of resources needed for preventing, avoiding, controlling, or mitigating human exposure risks, as well as for maintaining or promoting health. Seeking those interventions yielding the greatest benefit with respect to the allocation of resources is critical for making progress toward community sustainability, reducing health disparities, promoting social justice, and maintaining or improving collective health and well-being...
November 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29161573/decentralized-biorefinery-for-lignocellulosic-biomass-integrating-anaerobic-digestion-with-thermochemical-conversion
#11
Chayanon Sawatdeenarunat, Hyungseok Nam, Sushil Adhikari, Shihwu Sung, Samir Kumar Khanal
Anaerobic digestion (AD) of lignocellulosic biomass i.e. Napier grass (Pennisetum purpureum), was investigated via a series of batch and bench-scale experiments. Two semi-continuous bench-scale horizontal bioreactors were operated in parallel for nearly 300 days, and the reactors were able to handle the organic loading rate (OLR) up to 6 kg volatile solids (VS)/m(3)-d, which was among the highest OLR reported in the literature for lignocellulosic biomass. Hemicellulose was the main structural carbohydrate of lignocellulosic biomass per unit respective mass (dry weight) basis contributing to methane production...
November 9, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29161511/a-customizable-flow-injection-system-for-automated-high-throughput-and-time-sensitive-ion-mobility-spectrometry-and-mass-spectrometry-measurements
#12
Daniel J Orton, Malak M Tfaily, Ronald J Moore, Brian L LaMarche, Xueyun Zheng, Thomas L Fillmore, Rosalie K Chu, Karl K Weitz, Matthew E Monroe, Ryan T Kelly, Richard D Smith, Erin Shammel Baker
To better understand disease conditions and environmental perturbations, multi-omic studies combining proteomic, lipidomic, and metabolomic analyses are vastly increasing in popularity. In a multi-omic study, a single sample is typically extracted in multiple ways and various analyses are performed using different instruments. Thus, one sample becomes many measurements, making high throughput and reproducible evaluations a necessity. One way to address the numerous samples and varying instrumental conditions is to utilize a flow injection analysis (FIA) system for rapid sample injection...
November 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29161498/selective-isolation-of-myosin-subfragment-1-with-a-dna-polyoxovanadate-bioconjugate
#13
Qing Chen, Xue Hu, Dan-Dan Zhang, Xuwei Chen, Jian-Hua Wang
The bioconjugation of a polyoxometalate (POMs), i.e., dodecavanadate (V12O32), to DNA strands produces a functional labeled DNA primer, V12O32-DNA. The grafting of DNA primer onto streptavidin-coated magnetic nanoparticles (SVM) obtains a novel composite, V12O32-DNA@SVM. The high binding-affinity of V12O32 with the ATP binding site in myosin subfragment-1 (S1) facilitates favorable adsorption of myosin, with an efficiency of 99.4% when processing 0.1 mL myosin solution (100 μg/mL) using 0.1 mg composite. Myosin adsorption fits Langmuir model, corresponding to a theoretical adsorption capacity of 613...
November 21, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29161448/prenatal-famine-exposure-adulthood-obesity-patterns-and-risk-of-type-2-diabetes
#14
Ruogu Meng, Jun Lv, Canqing Yu, Yu Guo, Zheng Bian, Ling Yang, Yiping Chen, Hui Zhang, Xiaofang Chen, Junshi Chen, Zhengming Chen, Lu Qi, Liming Li
Background: Prenatal exposure to famine and adulthood obesity have been independently related to the risk of type 2 diabetes; however, little is known about the joint effects of these risk factors at different stages of life on adulthood diabetes risk. Methods: The analysis included 88 830 participants of the China Kadoorie Biobank, who were born around the time of the Chinese Great Famine and without diabetes, cardiovascular diseases, or cancer at baseline. We defined famine exposure subgroups as nonexposed (born between 1 October 1962 and 30 September 964), fetal-exposed (born between 1 October 1959 and 30 September 1961) and early-childhood exposed (born between 1 October 1956 and 30 September 1958)...
November 17, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29161441/contributions-of-function-altering-variants-in-genes-implicated-in-pubertal-timing-and-body-mass-for-self-limited-delayed-puberty
#15
Sasha R Howard, Leonardo Guasti, Ariel Poliandri, Alessia David, Claudia P Cabrera, Michael R Barnes, Karoliina Wehkalampi, Stephen O'Rahilly, Catherine E Aiken, Anthony P Coll, Marcella Ma, Debra Rimmington, Giles S H Yeo, Leo Dunkel
Context: Self-limited delayed puberty (DP) is often associated with delay in physical maturation, but whilst highly heritable the causal genetic factors remain elusive. Genome-wide association studies of the timing of puberty have identified multiple loci for age of menarche (AAM) in females and voice break in males, particularly in pathways controlling energy balance. Objective/Main outcome measures: We aimed to assess the contribution of rare variants in such genes to the phenotype of familial DP...
November 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29161434/designing-a-mutant-candida-uricase-with-improved-polymerization-state-and-enzymatic-activity
#16
Lei Tao, Dandan Li, Yonghong Li, Xinchang Shi, Junzhi Wang, Chunming Rao, Yingqi Zhang
As human uricase has been silenced during evolution, counterparts from other species become an alternative for the treatment of hyperuricemia. Candida uricase is a promising option among them, but its aggregation propensity remains a major obstacle to clinical use. In this study, we designed two mutations according to homology-modeled 3D structure of Candida uricase: Cys249Ser substitution and C-terminal Leu deletion. The wild-type uricase and three mutants containing either or both of the mutations were expressed in Escherichiacoli BL21 and validated by mass spectrometry...
November 17, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/29161416/combined-ovarian-and-adrenal-venous-sampling-in-the-localization-of-acth-independent-ectopic-cushing-s-syndrome
#17
Shi Chen, Ran Li, Xiaobo Zhang, Lin Lu, Ji Li, Hui Pan, Huijuan Zhu
Context: Cushing's syndrome is rarely caused by the secretion of cortisol from the ovarian tumors. It is important to determine whether the ovarian tumor is capable of secreting cortisol or not in clinical decision making. Selective ovarian and adrenal venous sampling has not been reported previously in the localization of ACTH-independent ectopic Cushing's syndrome. Case description: Herein, we presented a case of 40-year-old Chinese woman who has been manifested with weight gain, hirsutism, hypertension and menstrual disorder over a period of 6 months...
November 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29161341/distinct-spatiotemporal-accumulation-of-n-truncated-and-full-length-amyloid-%C3%AE-42-in-alzheimer-s-disease
#18
Mitsuru Shinohara, Shunsuke Koga, Takuya Konno, Jeremy Nix, Motoko Shinohara, Naoya Aoki, Pritam Das, Joseph E Parisi, Ronald C Petersen, Terrone L Rosenberry, Dennis W Dickson, Guojun Bu
Accumulation of amyloid-β peptides is a dominant feature in the pathogenesis of Alzheimer's disease; however, it is not clear how individual amyloid-β species accumulate and affect other neuropathological and clinical features in the disease. Thus, we compared the accumulation of N-terminally truncated amyloid-β and full-length amyloid-β, depending on disease stage as well as brain area, and determined how these amyloid-β species respectively correlate with clinicopathological features of Alzheimer's disease...
November 17, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29161333/precise-mass-determination-of-single-cell-with-cantilever-based-microbiosensor-system
#19
Bogdan Łabędź, Aleksandra Wańczyk, Zenon Rajfur
Having determined the mass of a single cell of brewer yeast Saccharomyces cerevisiae by means of a microcantilever-based biosensor Cantisens CSR-801 (Concentris, Basel, Switzerland), it was found that its dry mass is 47,65 ± 1,05 pg. Found to be crucial in this mass determination was the cell position along the length of the cantilever. Moreover, calculations including cells positions on the cantilever provide a threefold better degree of accuracy than those which assume uniform mass distribution. We have also examined the influence of storage time on the single cell mass...
2017: PloS One
https://www.readbyqxmd.com/read/29161329/comparative-metabolomics-profiling-of-engineered-saccharomyces-cerevisiae-lead-to-a-strategy-that-improving-%C3%AE-carotene-production-by-acetate-supplementation
#20
Xiao Bu, Liang Sun, Fei Shang, Guoliang Yan
A comparative metabolomic analysis was conducted on recombinant Saccharomyces cerevisiae strain producing β-carotene and the parent strain cultivated with glucose as carbon source using gas chromatography-mass spectrometry (GC-MS), high performance liquid chromatography-mass spectrometry (HPLC-MS) and ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) based approach. The results showed that most of the central intermediates associated with amino acids, carbohydrates, glycolysis and TCA cycle intermediates (acetic acid, glycerol, citric acid, pyruvic acid and succinic acid), fatty acids, ergosterol and energy metabolites were produced in a lower amount in recombinant strain, as compared to the parent strain...
2017: PloS One
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