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https://www.readbyqxmd.com/read/28806463/the-evolving-understanding-of-sudden-unexpected-infant-death
#1
Christine G McIntosh, Edwin A Mitchell
Sudden unexpected infant death (SUID) is the leading cause for post-neonatal mortality in industrialized nations. Case-control studies have identified risk factors for SUID that have shaped research into studies of causation. Most current hypotheses for the mechanisms for SUID contribute to the "SUID sequence"-hypoxia and/or hypercarbia in sleep to which a vulnerable infant fails to respond adequately and that results in death. Reducing vulnerability in infants and promoting safe sleep for infants is important for prevention and requires knowledge of the prevalence of risk factors within the target population and a culturally sensitive approach...
August 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28806423/new-synthetic-lipid-antigens-for-rapid-serological-diagnosis-of-tuberculosis
#2
Alison Jones, Mark Pitts, Juma'a R Al Dulayymi, James Gibbons, Andrew Ramsay, Delia Goletti, Christopher D Gwenin, Mark S Baird
BACKGROUND: During pulmonary tuberculosis (PTB) antibodies are generated to trehalose esters of mycolic acids which are cell wall lipids of Mycobacterium tuberculosis (Mtb). Attempts have been made to use these complex natural mixtures in serological tests for PTB diagnosis. AIM: The aim of this work was to determine whether a serological test based on a panel of defined individual trehalose esters of characteristic synthetic mycolic acids has improved diagnostic accuracy in distinguishing patients with culture positive PTB from individuals who were Mtb culture negative...
2017: PloS One
https://www.readbyqxmd.com/read/28805606/detection-of-sea-type-%C3%AE-thalassemia-in-embryo-biopsies-by-digital-pcr
#3
Ta-Hsien Lee, Ya-Chiung Hsu, Chia Lin Chang
OBJECTIVE: Accurate and efficient pre-implantation genetic diagnosis (PGD) based on the analysis of single or oligo-cells is needed for timely identification of embryos that are affected by deleterious genetic traits in in vitro fertilization (IVF) clinics. Polymerase chain reaction (PCR) is the backbone of modern genetic diagnoses, and a spectrum of PCR-based techniques have been used to detect various thalassemia mutations in prenatal diagnosis (PND) and PGD. Among thalassemias, SEA-type α-thalassemia is the most common variety found in Asia, and can lead to Bart's hydrops fetalis and serious maternal complications...
August 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28804572/bacterial-infections-post-living-donor-liver-transplantation-in-egyptian-hepatitis-c-virus-cirrhotic-patients-a-single-center-study
#4
Mohamed F Montasser, Nadia A Abdelkader, Sara M Abdelhakam, Hany Dabbous, Iman F Montasser, Yasmine M Massoud, Waleed Abdelmoaty, Shereen A Saleh, Mohamed Bahaa, Hany Said, Mahmoud El-Meteini
AIM: To determine risk factors, causative organisms and antimicrobial resistance of bacterial infections following living-donor liver transplantation (LDLT) in cirrhotic patients. METHODS: This prospective study included 45 patients with hepatitis C virus-related end-stage liver disease who underwent LDLT at Ain Shams Center for Organ Transplant, Cairo, Egypt from January 2014 to November 2015. Patients were followed-up for the first 3 mo after LDLT for detection of bacterial infections...
July 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28804465/personality-traits-related-to-binge-drinking-a-systematic-review
#5
REVIEW
Ana Adan, Diego A Forero, José Francisco Navarro
The pattern of alcohol consumption in the form of binge drinking (BD) or heavy episodic drinking has increased notably worldwide in recent years, especially among adolescent and young people, being currently recognized as a global health problem. Although only a minority of binge drinkers will develop a substance use disorder, BD may have negative personal and social consequences in the short and medium term. The objective of this article is to review the findings on personality traits related to binge drinkers and to emphasize the aspects that should be examined in order to make progress in this area...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28803982/specific-inhibition-of-xenorhabdus-hominickii-an-entomopathogenic-bacterium-against-different-types-of-host-insect-phospholipase-a2
#6
Md Sadekuzzaman, Yonggyun Kim
Phospholipase A2 (PLA2) hydrolyzes ester bond of phospholipids at the sn-2 position to release free fatty acid and lysophospholipids. Some PLA2s preferentially release arachidonic acid which is subsequently oxygenated into eicosanoids to mediate immune responses in insects. Xenorhabdus hominickii is an entomopathogenic bacterium that can suppress insect immunity by inhibiting PLA2 activity. However, little is known about target PLA2 types inhibited by X. hominickii. Therefore, the objective of this study was to determine PLA2 types in the host insect, Spodoptera exigua using specific inhibitors...
August 10, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28803751/insulin-prevents-aberrant-mitochondrial-phenotype-in-sensory-neurons-of-type-1-diabetic-rats
#7
Mohamad-Reza Aghanoori, Darrell R Smith, Subir Roy Chowdhury, Mohammad Golam Sabbir, Nigel A Calcutt, Paul Fernyhough
Diabetic neuropathy affects approximately 50% of diabetic patients. Down-regulation of mitochondrial gene expression and function has been reported in both human tissues and in dorsal root ganglia (DRG) from animal models of type 1 and type 2 diabetes. We hypothesized that loss of direct insulin signaling in diabetes contributes to loss of mitochondrial function in DRG neurons and to development of neuropathy. Sensory neurons obtained from age-matched adult control or streptozotocin (STZ)-induced type 1 diabetic rats were cultured with or without insulin before determining mitochondrial respiration and expression of mitochondrial respiratory chain and insulin signaling-linked proteins...
August 10, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28803475/intuitive-label-free-sers-detection-of-bacteria-using-aptamer-based-in-situ-ag-nanoparticles-synthesis
#8
Weicun Gao, Bo Li, Ruizhi Yao, Zhiping Li, Xiwen Wang, Xiaolin Dong, Han Qu, Qianxue Li, Nan Li, Hang Chi, Bo Zhou, Zhiping Xia
The characteristic of an ideal bacteria-detection method should have high sensitivity, specificity, easy to operate and without time-consuming culture process. In this study, we report a new bacteria detection strategy that can recognize bacteria quickly and directly by surface-enhanced Raman scattering (SERS) with the formation of well-defined Bacteria-aptamer@AgNPs. SERS signals generated by Bacteria-aptamer@AgNPs exhibited a linear dependence on bacteria (R2=0.9671) concentration ranged from 101 to 107 cfu/mL...
August 13, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28803455/effect-of-positive-perioperative-donor-and-recipient-respiratory-bacterial-cultures-on-early-post-transplant-outcomes-in-lung-transplant-recipients
#9
Crystal K Howell, Christopher A Paciullo, Marshall G Lyon, David Neujahr, Peter Lyu, George Cotsonis, Michael Hurtik
BACKGROUND: It is standard practice to administer prophylactic antibiotics post lung transplantation. However, no studies have evaluated the impact of culture positivity. The purpose of this study was to evaluate early post-transplant outcomes of culture-positive and culture-negative lung transplant (LT) recipients and the appropriateness of the empiric regimens used. METHODS: Adult patients who received an LT at Emory University Hospital between January 1, 2010 and August 31, 2015 were reviewed and stratified into three groups: (i) culture-positive appropriate empiric treatment, (ii) culture-positive inappropriate empiric treatment, and (iii) culture-negative...
August 13, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28803257/synthesis-and-biological-evaluation-of-4-o-acetyl-isoxanthohumol-and-its-analogues-as-antioxidant-and-antiproliferative-agents
#10
Monika Stompor, Marta Świtalska, Rafał Podgórski, Łukasz Uram, David Aebisher, Joanna Wietrzyk
Isoxanthohumol (2) and its 4'-O-monoacylated (3) and 7,4'-O-diacetylated (4) derivatives were synthesized and evaluated in vitro for their cytotoxic activity against several cancer cell lines of various origins: MCF-7 (breast), A549 (lung), MESSA (uterine sarcoma), LoVo (colon), drug-resistant human cancer cells (MESSA/DX and LoVo/DX), glioblastoma (U-118 MG), and also towards the non-cancerous cell line MCF-10A (normal breast cells). An antiproliferative assay indicates that 7,4'-di-O-acylisoxanthohumol (4) has similar cytotoxicity to its precursor, isoxanthohumol (2), against selected cell lines (A549, MES-SA, MES-SA/5DX, and U-118 MG)...
August 12, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28803008/two-step-large-volume-magnetic-separation-combined-with-pcr-assay-for-sensitive-detection-of-listeria-monocytogenes-in-pasteurized-milk
#11
Dan Luo, Xiaolin Huang, Yan Mao, Chaochao Chen, Fulai Li, Hengyi Xu, Yonghua Xiong
Immunomagnetic separation (IMS) is an effective tool for the preconcentration and purification of food-borne pathogens from complex food samples because of its high capture efficiency (CE). In conventional IMS, antibodies are usually conjugated on the surface of magnetic beads (MB); the random orientation and conformation changes of antibodies on the MB surface can decrease their bioactivity. Moreover, the Brownian motion of immobilized antibodies is weakened, thereby rendering their binding efficiency with bacteria lower than that of free antibodies...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28802406/real-time-pcr-followed-by-high-resolution-melting-curve-analysis-a-rapid-and-pragmatic-approach-for-screening-of-multidrug-resistant-extrapulmonary-tuberculosis
#12
Kusum Sharma, Megha Sharma, Shreya Singh, Manish Modi, Aman Sharma, Pallab Ray, Subhash Varma
INTRODUCTION: Multidrug resistance (MDR) in extrapulmonary tuberculosis (EPTB) is a diagnostic challenge in an endemic country like India. Timely detection of MDR-TB can contribute to a better patient outcome. OBJECTIVE: To perform real-time PCR (qPCR) using rpoB, mpb64 and IS6110 gene on a variety of EPTB samples and to compare the performance of different gene targets. All qPCR positive samples were subjected to high resolution melt-curve analysis (HRM analysis) for rpoB and katG gene to evaluate its potential for MDR screening among different sample types...
September 2017: Tuberculosis
https://www.readbyqxmd.com/read/28802252/exploiting-radiation-induced-signaling-to-increase-the-susceptibility-of-resistant-cancer-cells-to-targeted-drugs-akt-and-mtor-inhibitors-as-an-example
#13
Iris Eke, Adeola Y Makinde, Molykutty J Aryankalayil, Veit Sandfort, Sanjeewani T Palayoor, Barbara H Rath, Lance Liotta, Mariaelena Pierobon, Emanuel F Petricoin, Matthew F Brown, Jayne M Stommel, Mansoor M Ahmed, C Norman Coleman
Implementing targeted drug therapy in radio-oncologic treatment regimens has greatly improved the outcome of cancer patients. However, the efficacy of molecular targeted drugs such as inhibitory antibodies or small molecule inhibitors essentially depends on target expression and activity, which both can change during the course of treatment. Radiotherapy has previously been shown to activate pro-survival pathways which can help tumor cells to adapt and thereby survive treatment. Therefore, we aimed to identify changes in signaling induced by radiation and evaluate the potential of targeting these changes with small molecules to increase the therapeutic efficacy on cancer cell survival...
August 11, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28802066/targeting-senescent-cholangiocytes-and-activated-fibroblasts-with-bcl-xl-inhibitors-ameliorates-fibrosis-in-mdr2-mice
#14
Anja Moncsek, Mohammed S Al-Suraih, Christy E Trussoni, Steven P O'Hara, Patrick L Splinter, Camille Zuber, Eleonora Patsenker, Piero V Valli, Christian D Fingas, Achim Weber, Yi Zhu, Tamar Tchkonia, James L Kirkland, Gregory J Gores, Beat Müllhaupt, Nicholas F LaRusso, Joachim C Mertens
Cholangiocyte senescence has been linked to primary sclerosing cholangitis (PSC). Persistent secretion of growth factors by senescent cholangiocytes leads to the activation of stromal fibroblasts (ASF), which are drivers of fibrosis. The activated phenotype of ASF is characterized by an increased sensitivity to apoptotic stimuli. Here, we examined the mechanisms of apoptotic priming in ASF and explored a combined targeting strategy to deplete senescent cholangiocytes and ASF from fibrotic tissue to ameliorate liver fibrosis...
August 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28802021/acute-exposure-to-an-environmentally-relevant-concentration-of-diclofenac-elicits-oxidative-stress-in-the-culturally-important-galaxiid-fish-galaxias-maculatus
#15
Nicole K Mcrae, Chris N Glover, S Rebekah Burket, Bryan W Brooks, Sally Gaw
Diclofenac is a non-steroidal anti-inflammatory drug of growing concern in aquatic environments worldwide, yet knowledge of its effects on aquatic biota are restricted to a few model species and mechanisms of impact. In the current study, diclofenac accumulation, its effects on metabolic rate, ionoregulation, and oxidative stress were examined at environmentally-relevant (0.17 μg L-1) and elevated (763 μg L-1) concentrations in a culturally and economically important galaxiid fish, inanga (Galaxias maculatus), from the Southern Hemisphere...
August 12, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28801916/adenosine-and-dopamine-oppositely-modulate-a-hyperpolarization-activated-current-ih-in-chemosensory-neurons-of-the-rat-carotid-body-in-co-culture
#16
Min Zhang, Cathy Vollmer, Colin A Nurse
Adenosine and dopamine (DA) act as neurotransmitters or neuromodulators at the carotid body (CB) chemosensory synapse, however, their mechanisms of action are not fully understood. Using a functional co-culture model of rat CB chemoreceptor (type I) cell clusters and juxtaposed afferent petrosal neurons (PNs), we tested the hypothesis that adenosine and DA act postsynaptically to modulate a hyperpolarization-activated, cyclic nucleotide-gated (HCN) cation current (Ih ). In whole-cell recordings from hypoxia-responsive PNs, cAMP mimetics enhanced Ih whereas the HCN blocker ZD7288 (2 μm) reversibly inhibited Ih ...
August 12, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28801422/-it-s-trying-to-manage-the-work-a-qualitative-evaluation-of-recruitment-processes-within-a-uk-multicentre-trial
#17
Zoë Christina Skea, Shaun Treweek, Katie Gillies
OBJECTIVES: To explore trial site staff's perceptions regarding barriers and facilitators to local recruitment. DESIGN: Qualitative semi-structured interviews with a range of trial site staff from four trial sites in the UK. Interviews were analysed thematically to identify common themes across sites, barriers that could be addressed and facilitators that could be shared with other sites. PARTICIPANTS: 11 members of staff from four trial sites: clinical grant Co-applicant (n=1); Principal Investigators (n=3); Consultant Urologist (n=1); Research Nurses (n=5); Research Assistant (n=1)...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28801118/-value-of-gastric-fluid-to-start-antibiotics-in-premature-babies-suspected-of-having-early-neonatal-bacterial-infection
#18
R N'Guessan, J-M Jellimann, J-M Hascoët, R Vieux, H Tahar
The objective of this study was to evaluate the value of direct examination and culture of gastric fluid in the treatment of early neonatal bacterial infections (INBP) in pre-term infants. MATERIALS AND METHODS: Observational study conducted over 6 months in a Type III center. All hospitalized premature babies who had routine gastric fluid sampling at birth during the period of the study were included. They were classified into two groups: premature infants with probable or suspected infection and treated as such (Group 1) and premature infants with no infection or only having colonization (Group 2)...
August 8, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28800088/upregulation-and-identification-of-antibiotic-activity-of-a-marine-derived-streptomyces-sp-via-co-cultures-with-human-pathogens
#19
Anne A Sung, Samantha M Gromek, Marcy J Balunas
Marine natural product drug discovery has begun to play an important role in the treatment of disease, with several recently approved drugs. In addition, numerous microbial natural products have been discovered from members of the order Actinomycetales, particularly in the genus Streptomyces, due to their metabolic diversity for production of biologically active secondary metabolites. However, many secondary metabolites cannot be produced under laboratory conditions because growth conditions in flask culture differ from conditions in the natural environment...
August 11, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28799961/nurses-perceptions-of-psychosocial-care-and-barriers-to-its-provision-a-qualitative-study
#20
Cassandra Siyun Chen, Sally Wai-Chi Chan, Moon Fai Chan, Suk Foon Yap, Wenru Wang, Yanika Kowitlawakul
BACKGROUND: Psychosocial care is the culturally sensitive provision of psychological, social, and spiritual care through therapeutic communication. Current evidence suggests that effective psychosocial care improves patients' health outcomes and quality of life. PURPOSE: The aim of this study was to explore nurses' perceptions and experiences in providing psychosocial care to patients and to identify the related barriers and challenges. METHODS: An exploratory qualitative design using semistructured, individual, face-to-face interviews was adopted...
August 10, 2017: Journal of Nursing Research: JNR
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