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https://www.readbyqxmd.com/read/28551882/medical-geology-of-endemic-goiter-in-kalutara-sri-lanka-distribution-and-possible-causes
#1
G W A R Fernando, P L C L Liyanage, Anushka Upamali Rajapaksha, Meththika Vithanage
This study assesses the distribution of goiter in the Kalutara District, Sri Lanka in order to find causative factors for the occurrence of goiter even after the salt iodization. A questionnaire survey was conducted at the household level and at the same time iodine and selenium levels of the water sources were analyzed. Questionnaire survey results indicated the highest numbers of goiter patients in the northern part where the lowest were found in the southern sector which may be due to the presence of acid sulfate soils...
May 27, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28551881/abundance-and-distribution-of-antibiotic-resistance-genes-in-a-full-scale-anaerobic-aerobic-system-alternately-treating-ribostamycin-spiramycin-and-paromomycin-production-wastewater
#2
Mei Tang, Xiaomin Dou, Chunyan Wang, Zhe Tian, Min Yang, Yu Zhang
The occurrence of antibiotic-resistant bacteria and antibiotic resistance genes (ARGs) has been intensively investigated for wastewater treatment systems treating single class of antibiotic in recent years. However, the impacts of alternately occurring antibiotics in antibiotic production wastewater on the behavior of ARGs in biological treatment systems were not well understood yet. Herein, techniques including high-capacity quantitative PCR and quantitative PCR (qPCR) were used to investigate the behavior of ARGs in an anaerobic-aerobic full-scale system...
May 27, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28551870/linking-neuroethology-to-the-chemical-biology-of-natural-products-interactions-between-cone-snails-and-their-fish-prey-a-case-study
#3
REVIEW
Baldomero M Olivera, Shrinivasan Raghuraman, Eric W Schmidt, Helena Safavi-Hemami
From a biological perspective, a natural product can be defined as a compound evolved by an organism for chemical interactions with another organism including prey, predator, competitor, pathogen, symbiont or host. Natural products hold tremendous potential as drug leads and have been extensively studied by chemists and biochemists in the pharmaceutical industry. However, the biological purpose for which a natural product evolved is rarely addressed. By focusing on a well-studied group of natural products-venom components from predatory marine cone snails-this review provides a rationale for why a better understanding of the evolution, biology and biochemistry of natural products will facilitate both neuroscience and the potential for drug leads...
May 27, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28551823/indirect-comparisons-of-the-efficacy-of-biological-agents-in-patients-with-active-ankylosing-spondylitis-a-systematic-review-and-meta-analysis
#4
Patompong Ungprasert, Patricia J Erwin, Matthew J Koster
Patients with ankylosing (AS) often do not have a satisfactory response to, or could not tolerate, non-steroidal anti-inflammatory drugs (NSAIDs). Several biologic agents are available for such patients. However, the comparative efficacy of these treatments remains unknown as head-to-head randomized controlled trials (RCTs) are not available. RCTs examining the efficacy of biologic agents in patients with AS who had inadequate response to, or could not tolerate, NSAIDs were identified. If at least two RCTs were available for a given biologic agent, the pooled odds ratio (OR) and 95% confidence interval (CI) of achieving 20% improvement according to the Ankylosing Spondylitis Assessment Study group response criteria 20 (ASAS20) across trials were calculated...
May 28, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28551808/mitochondrial-heteroplasmy
#5
George B Stefano, Christina Bjenning, Fuzhou Wang, Nan Wang, Richard M Kream
Genetic polymorphisms, in concert with well-characterized etiology and progression of major pathologies, plays a significant role in aberrant processes afflicting human populations. Mitochondrial heteroplasmy represents a dynamically determined co-expression of inherited polymorphisms and somatic pathology in varying ratios within individual mitochondrial DNA (mtDNA) genomes with repetitive patterns of tissue specificity. The ratios of the MtDNA genomes represent a balance between healthy and pathological cellular outcomes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28551798/mitochondrial-proton-leak-plays-a-critical-role-in-pathogenesis-of-cardiovascular-diseases
#6
Jiali Cheng, Gayani Nanayakkara, Ying Shao, Ramon Cueto, Luqiao Wang, William Y Yang, Ye Tian, Hong Wang, Xiaofeng Yang
Mitochondrial proton leak is the principal mechanism that incompletely couples substrate oxygen to ATP generation. This chapter briefly addresses the recent progress made in understanding the role of proton leak in the pathogenesis of cardiovascular diseases. Majority of the proton conductance is mediated by uncoupling proteins (UCPs) located in the mitochondrial inner membrane. It is evident that the proton leak and reactive oxygen species (ROS) generated from electron transport chain (ETC) in mitochondria are linked to each other...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28551781/the-in-vivo-biology-of-the-mitochondrial-calcium-uniporter
#7
Julia C Liu, Randi J Parks, Jie Liu, Justin Stares, Ilsa I Rovira, Elizabeth Murphy, Toren Finkel
The identification of the molecular composition of the mitochondrial calcium uniporter has allowed for the genetic manipulation of its components and the creation of various in vivo genetic models. Here, we review the initial attempts to modulate the expression of components of the calcium uniporter in a range of organisms from plants to mammals. This analysis has confirmed the strict requirement for the uniporter for in vivo mitochondrial calcium uptake and for maintaining mitochondrial calcium homeostasis...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28551775/lbec0101-a-proposed-etanercept-biosimilar-pharmacokinetics-immunogenicity-and-tolerability-profiles-compared-with-a-reference-biologic-product-in-healthy-male-subjects
#8
Heechan Lee, Hyewon Chung, SeungHwan Lee, Howard Lee, Sung Mo Yang, Seo Hyun Yoon, Joo-Youn Cho, In-Jin Jang, Kyung-Sang Yu
OBJECTIVES: We performed this study to compare the pharmacokinetic (PK), immunogenicity, and tolerability profiles of etanercept between LBEC0101, a proposed biosimilar, and Enbrel(®), the reference biological product. METHODS: A randomized, double-blind, single-dose, two-treatment, two-period, two-sequence, crossover study was conducted in 48 healthy males. In each period, a single dose of LBEC0101 or Enbrel(®) was subcutaneously injected at 25 mg and serial blood samples for PK evaluation were collected up to 648 h post-dose...
May 27, 2017: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/28551772/e-health-beyond-technology-analyzing-the-paradigm-shift-that-lies-beneath
#9
Tania Moerenhout, Ignaas Devisch, Gustaaf C Cornelis
Information and computer technology has come to play an increasingly important role in medicine, to the extent that e-health has been described as a disruptive innovation or revolution in healthcare. The attention is very much focused on the technology itself, and advances that have been made in genetics and biology. This leads to the question: What is changing in medicine today concerning e-health? To what degree could these changes be characterized as a 'revolution'? We will apply the work of Thomas Kuhn, Larry Laudan, Michel Foucault and other philosophers-which offers an alternative understanding of progress and revolution in medicine to the classic discovery-oriented approach-to our analysis...
May 27, 2017: Medicine, Health Care, and Philosophy
https://www.readbyqxmd.com/read/28551767/does-rarity-mean-imparity-biological-characteristics-of-osteosarcoma-cells-originating-from-the-spine
#10
Zhenhua Zhou, Yan Li, Xu Yan, Xudong Wang, Cheng Yang, Haifeng Wei, Xinghai Yang, Jianru Xiao
PURPOSE: Osteosarcoma is one of the most common malignancies in bones and is often found in limbs. Until now, it is not clear why osteosarcoma is rare in the spine. On the other hand, previous biological characteristics study about osteosarcoma of spine was also rare because of its low incidence. To explore the biology of spinal osteosarcoma, a stable osteosarcoma cell line derived from spine is necessary. METHODS: A novel osteosarcoma cell line named NEO217 was established from spinal osteosarcoma tissues obtained from a Chinese male patient...
May 27, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28551760/genetic-and-environmental-influences-on-longitudinal-trajectories-of-functional-biological-age-comparisons-across-gender
#11
Deborah Finkel, Ola Sternäng, Åke Wahlin
We used an alternate age variable, functional biological age (fBioAge), which was based on performance on functional body measures. The aim was to examine development of fBioAge across the adult life span, and to also examine potential gender differences and genetic and environmental influences on change with age. We used longitudinal data (n = 740; chronological age (ChronAge) range 45-85 at baseline) from the Swedish Adoption/Twin Study of Aging. The rate of increase in fBioAge was twice as fast after ChronAge 75 than before...
May 27, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28551748/anatomy-and-cell-biology-of-autism-spectrum-disorder-lessons-from-human-genetics
#12
Kristel T E Kleijer, Guillaume Huguet, Julie Tastet, Thomas Bourgeron, J P H Burbach
Until recently autism spectrum disorder (ASD) was regarded as a neurodevelopmental condition with unknown causes and pathogenesis. In the footsteps of the revolution of genome technologies and genetics, and with its high degree of heritability, ASD became the first neuropsychiatric disorder for which clues towards molecular and cellular pathogenesis were uncovered by genetic identification of susceptibility genes. Currently several hundreds of risk genes have been assigned, with a recurrence below 1% in the ASD population...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28551649/rare-neoplasm-mimicking-neuoroendocrine-pancreatic-tumor-a-case-report-of-solitary-fibrous-tumor-with-review-of-the-literature
#13
Francesco E D'Amico, Cesare Ruffolo, Maurizio Romano, Marina DI Domenico, Marta Sbaraglia, Angelo P Dei Tos, Tiziana Garofalo, Antonio Giordano, Iccolò Bassi, Marco Massani
BACKGROUND: Solitary fibrous tumors (SFTs) are rare biological entities described mainly in the pleura. To date, in the pancreas, only 14 cases have been reported in the English literature. CASE REPORT: A 52-year-old male was diagnosed incidentally with a suspected neuroendocrine tumor (NET) of the pancreas. He underwent pancreatic enucleation of the mass, which, at final pathology, showed spindle cell proliferation set in a collagenous background and featuring the presence of hemangiopericytoma-like blood...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551627/the-cooh-terminus-of-the-igf-1ec-isoform-enhances-the-proliferation-and-migration-of-human-mcf-7-breast-cancer-cells
#14
Panagiotis F Christopoulos, Efstathia Papageorgiou, Constantina Petraki, Michael Koutsilieris
BACKGROUND/AIM: The insulin-like growth factor-1 (IGF-1) signaling is well implicated in cancer biology, however the potential roles of the distinct IGF-1 isoforms in human malignancies are largely unknown. Recently, the carboxyl-terminal of the IGF-1Ec variant (hEc; 24aa) has been associated with osteosarcoma and prostate cancer. Herein, we investigated the potential role of hEc in breast cancer. MATERIALS AND METHODS: Synthetic hEc peptide was administrated to MCF-7 and MDA-MB-231 breast cancer cells...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551576/light-triggered-release-from-dye-loaded-fluorescent-lipid-nanocarriers-in-vitro-and-in-vivo
#15
Redouane Bouchaala, Nicolas Anton, Halina Anton, Thierry Vandamme, Julien Vermot, Djabi Smail, Yves Mély, Andrey S Klymchenko
Light is an attractive trigger for release of active molecules from nanocarriers in biological systems. Here, we describe a phenomenon of light-induced release of a fluorescent dye from lipid nano-droplets under visible light conditions. Using auto-emulsification process we prepared nanoemulsion droplets of 32nm size encapsulating the hydrophobic analogue of Nile Red, NR668. While these nano-droplets cannot spontaneously enter the cells on the time scale of hours, after illumination for 30s under the microscope at the wavelength of NR668 absorption (535nm), the dye showed fast accumulation inside the cells...
May 15, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28551574/toxicity-of-silver-nanoparticles-towards-tumoral-human-cell-lines-u-937-and-hl-60
#16
Anna Barbasz, Magdalena Oćwieja, Maciej Roman
The toxicity of three types of silver nanoparticles towards histiocytic lymphoma (U-937) and human promyelocytic cells (HL-60) was studied. The nanoparticles were synthesized in a chemical reduction method using sodium borohydride. Trisodium citrate and cysteamine hydrochloride were used to generate a negative and positive nanoparticle surface charge. The evaluation of cell viability, membrane integrity, antioxidant activity and the induction of inflammation were used to evaluate the difference in cellular response to the nanoparticle treatment...
May 11, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28551572/ph-induced-conformational-change-of-natural-cyclic-lipopeptide-surfactin-and-the-effect-on-protease-activity
#17
Toshiaki Taira, Satohiro Yanagisawa, Takuto Nagano, Tadao Tsuji, Akira Endo, Tomohiro Imura
The cyclic lipopeptide surfactin (SF) is one of the promising environmental friendly biosurfactants abundantly produced by microorganisms such as Bacillus subtilis. SF shows excellent surface properties at various pH, together with lower toxicity and higher biodegradability than commonly used petroleum-based surfactants. However, the effect of the dissociation degree of SF on self-assembly is still incompletely understood, even though two acidic amino acid residues (Asp and Glu) are known to influence eventual surface and biological functions...
May 9, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28551570/the-wettability-and-swelling-of-selected-mucoadhesive-polymers-in-simulated-saliva-and-vaginal-fluids
#18
M Rojewska, M Olejniczak-Rabinek, A Bartkowiak, A Snela, K Prochaska, J Lulek
The surface properties play a particularly important role in the mucoadhesive drug delivery systems. In these formulations, the adsorption of polymer matrix to mucous membrane is limited by the wetting and swelling process of the polymer structure. Hence, the performance of mucoadhesive drug delivery systems made of polymeric materials depends on multiple factors, such as contact angle, surface free energy and water absorption rate. The aim of our study was to analyze the effect of model saliva and vaginal fluids on the wetting properties of selected mucoadhesive (Carbopol 974P NF, Noveon AA-1, HEC) and film-forming (Kollidon VA 64) polymers as well as their blends at the weight ratio 1:1 and 1:1:1, prepared in the form of discs...
May 15, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28551565/pm2-5-bound-metal-metabolic-distribution-and-coupled-lipid-abnormality-at-different-developmental-windows
#19
Tingting Ku, Yingying Zhang, Xiaotong Ji, Guangke Li, Nan Sang
Atmospheric fine particulate matter (PM2.5) is a serious threat to human health. As a toxicant constituent, metal leads to significant health risks in a population, but exposure to PM2.5-bound metals and their biological impacts are not fully understood. In this study, we determined the metal contents of PM2.5 samples collected from a typical coal-burning city and then investigated the metabolic distributions of six metals (Zn, Pb, Mn, As, Cu, and Cd) following PM2.5 inhalation in mice in different developmental windows...
May 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28551550/antidiabetic-properties-of-capparis-spinosa-l-and-its-components
#20
REVIEW
Hamideh Vahid, Hassan Rakhshandeh, Ahmad Ghorbani
An increasing line of evidence confirmed that apart from conventional hypoglycemic drugs, diet and medicinal plants have beneficial effects on diabetes. Capparis spinosa L. (Caper) is a perennial shrub in the Capparidaceae family. It grows in different regions of the world, particularly in Asian and African countries. A wide range of biological activities such as antioxidant, anti-inflammatory, anticancer, antimicrobial, and antidiabetic effects have been reported for this plant. In this review, it is focused on beneficial effects of C...
May 24, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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