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https://www.readbyqxmd.com/read/29351639/call-to-action-prevention-of-mother-to-child-transmission-of-hepatitis-b-in-africa
#1
Peyton Wilson, Jonathan B Parr, Ravi Jhaveri, Steve R Meshnick
Hepatitis B virus (HBV) is a significant public health issue that has not been adequately addressed, especially in the high-prevalence region of Africa. Despite the incorporation of HBV vaccines into the Expanded Program on Immunization (EPI), children continue to be infected with HBV through maternal-to-child transmission (MTCT). The addition of a birth dose of HBV vaccine would be a cost-effective method to reduce MTCT. Birth-dose HBV vaccine policies have been adopted in the Western Pacific region but have yet to be implemented in the African region...
January 17, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29345102/the-mycobiota-of-the-sand-fly-phlebotomus-perniciosus-involvement-of-yeast-symbionts-in-uric-acid-metabolism
#2
Elena Martin, Ilaria Varotto Boccazzi, Leone De Marco, Gioia Bongiorno, Matteo Montagna, Luciano Sacchi, Priscilla Mensah, Irene Ricci, Luigi Gradoni, Claudio Bandi, Sara Epis
The knowledge of the fungal mycobiota of arthropods, including the vectors of human and animal diseases, is still limited. Here, we investigated the mycobiota associated with the sand fly Phlebotomus perniciosus, the main vector of leishmaniasis in the western Mediterranean area, by a culture-dependent approach (microbiological analyses and sequencing of the 26S rRNA gene), internal transcribed spacer (ITS) rRNA amplicon-based next-generation sequencing, fluorescence in situ hybridisation (FISH), and genome sequencing of the dominant yeast species...
January 18, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29343943/the-oral-bioavailability-excretion-and-cytochrome-p450-inhibition-properties-of-epiberberine-an-in-vivo-and-in-vitro-evaluation
#3
Ning Chen, Xiao-Yan Yang, Chang-E Guo, Xin-Ning Bi, Jian-Hua Chen, Hong-Ying Chen, Hong-Pin Li, Hong-Ying Lin, Yu-Jie Zhang
Epiberberine (EPI) is a novel and potentially effective therapeutic and preventive agent for diabetes and cardiovascular disease. To evaluate its potential value for drug development, a specific, sensitive and robust high-performance liquid chromatography-tandem mass spectrometry assay for the determination of EPI in rat biological samples was established. This assay was used to study the pharmacokinetics, bioavailability and excretion of EPI in rats after oral administration. In addition, a cocktail method was used to compare the inhibition characteristics of EPI on cytochrome P450 (CYP450) isoforms in human liver microsomes (HLMs) and rat liver microsomes (RLMs)...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29340585/spinal-tuberculosis-clinicoradiological-findings-in-274-patients
#4
Suzaan Marais, Izanne Roos, Ayesha Mitha, Sepelong J Mabusha, Vinod Patel, Ahmed I Bhigjee
Background: Mycobacterium tuberculosis is a major cause of myelopathy and radiculopathy in high TB/HIV prevalent settings. However, a paucity of publications exists on the spectrum of neurological and magnetic resonance imaging (MRI) findings of spinal tuberculosis in these populations. Methods: A retrospective study of adults with spinal tuberculosis conducted at a referral center for patients with spinal disease without bony involvement on plain film radiography in South Africa...
January 11, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29339549/apol1-genotype-and-renal-function-of-black-living-donors
#5
Mona D Doshi, Mariella Ortigosa-Goggins, Amit X Garg, Lihua Li, Emilio D Poggio, Cheryl A Winkler, Jeffrey B Kopp
Black living kidney donors are at higher risk of developing kidney disease than white donors. We examined the effect of the APOL1 high-risk genotype on postdonation renal function in black living kidney donors and evaluated whether this genotype alters the association between donation and donor outcome. We grouped 136 black living kidney donors as APOL1 high-risk (two risk alleles; n=19; 14%) or low-risk (one or zero risk alleles; n=117; 86%) genotype. Predonation characteristics were similar between groups, except for lower mean±SD baseline eGFR (CKD-EPI equation) in donors with the APOL1 high-risk genotype (98±17 versus 108±20 ml/min per 1...
January 16, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29339091/an-energetic-view-of-stress-focus-on-mitochondria
#6
REVIEW
Martin Picard, Bruce S McEwen, Elissa Epel, Carmen Sandi
Energy is required to sustain life and enable stress adaptation. At the cellular level, energy is largely derived from mitochondria - unique multifunctional organelles with their own genome. Four main elements connect mitochondria to stress: 1) Energy is required at the molecular, (epi)genetic, cellular, organ, and systemic levels to sustain components of stress responses; 2) Glucocorticoids and other steroid hormones are produced and metabolized by mitochondria; 3) Reciprocally, mitochondria functionally respond to neuroendocrine and metabolic stress mediators; and 4) Experimentally manipulating mitochondrial functions alters physiological and behavioral responses to psychological stress...
January 12, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29336995/a-search-for-molecular-mechanisms-underlying-male-idiopathic-infertility
#7
REVIEW
An Bracke, Kris Peeters, Usha Punjabi, David Hoogewijs, Sylvia Dewilde
Infertility affects approximately 15% of the couples wanting to conceive. In 30 - 40% of the cases the aetiology of male infertility remains unknown and is called idiopathic male infertility. When assisted reproductive technologies are used to obtain pregnancy, an adequate (epi)genetic diagnosis of male infertility is of major importance to evaluate if a genetic abnormality will be transmitted to the offspring. In addition, there is need for better diagnostic seminal biomarkers to assess the success rates of these assisted reproductive technologies...
December 27, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29335062/epidemiology-of-measles-cases-in-south-darfur-state-sudan-2011-2015
#8
Taha Hussein Musa, Rehab Ibrahim Kambo, Abdelkareem Abdallah Ahmed, Hassan Hussein Musa
Case-based surveillance measles data was defined according to World Health Organization (WHO) guidelines. A total of 511 measles cases were studied from 2011 to 2015 in Southern Darfur State, Sudan and 58.1% of cases were confirmed from Nyala city. About 43.4% of cases were males, 56.6% of cases were female, and 47.7% were children under five years old. Similarity, within February to June, the cases increased by 8.0% in children vaccinated through measles campaign, and 5.3% in children that used child vaccination card and 78...
December 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/29333939/parents-attitude-awareness-and-behaviour-towards-influenza-vaccination-in-pakistan
#9
Allah Bukhsh, Habib-Ur Rehman, Inayat Ur Rehman, Tahir Mehmood Khan, Tauqeer Hussain Mallhi
National immunization program of Pakistan does not include Influenza vaccines. The low rate of immunization might be attributed to the poor knowledge of influenza vaccination in Pakistan. Current study was aimed to assess the knowledge and attitude of influenza vaccination among parents. A questionnaire-based cross sectional study was conducted among randomly selected parents with at least one child aged >6 months. The responses were recorded against 27 items questionnaire assessing knowledge, perception, attitude and behaviours of parents...
January 15, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29333720/degree-of-sglt1-phosphorylation-is-associated-with-but-does-not-determine-segment-specific-glucose-transport-features-in-the-porcine-small-intestines
#10
Stefanie Klinger, Patrick Lange, Elisabeth Brandt, Karin Hustedt, Bernd Schröder, Gerhard Breves, Jens Herrmann
Glucose-induced electrogenic ion transport is higher in the porcine ileum compared with the jejunum despite equal apical abundance of SGLT1. The objective of this study was a detailed determination of SGLT1 and GLUT2 expressions at mRNA and protein levels along the porcine small intestinal axis. Phosphorylation of SGLT1 at serine 418 was assessed as a potential modulator of activity. Porcine intestinal tissues taken along the intestinal axis 1 h or 3 h after feeding were analyzed for relative mRNA (RT-PCR) and protein levels (immunoblot) of SGLT1, pSGLT1, GLUT2, (p)AMPK, β2 -receptor, and PKA substrates...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29333147/novel-filtration-markers-for-gfr-estimation
#11
Amy B Karger, Lesley A Inker, Josef Coresh, Andrew S Levey, John H Eckfeldt
Creatinine-based glomerular filtration rate estimation (eGFRcr) has been improved and refined since the 1970s through both the Modification of Diet in Renal Disease (MDRD) Study equation in 1999 and the CKD Epidemiology Collaboration (CKD-EPI) equation in 2009, with current clinical practice dependent primarily on eGFR for accurate assessment of GFR. However, researchers and clinicians have recognized limitations of relying on creatinine as the only filtration marker, which can lead to inaccurate GFR estimates in certain populations due to the influence of non-GFR determinants of serum or plasma creatinine...
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29331592/combined-creatinine-cystatin-c-ckd-epi-equation-significantly-underestimates-measured-glomerular-filtration-rate-in-people-with-type-2-diabetes-mellitus
#12
Júlia Dauernheimer Machado, Eduardo Guimarães Camargo, Roberta Boff, Laís da Silva Rodrigues, Joíza Lins Camargo, Ariana Aguiar Soares, Sandra Pinho Silveiro
AIM: To evaluate the accuracy of creatinine and cystatin C (cysC) equations to estimate glomerular filtration rate (GFR) in type 2 diabetes mellitus (DM) patients and healthy adults. METHODS: Case-control study including 84 patients with type 2 DM and 100 healthy adults with measured GFR (mGFR)≥60mL/min/1.73m2. GFR was measured by 51Cr-EDTA and estimated (eGFR) by the following equations using creatinine, cysC or both markers: Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), Caucasian Asian Pediatrics and Adults (CAPA), CKD-EPI creatinine-cystatin C (CKDEPI-CC), and CKD-EPI cystatin C (CKDEPIcysC)...
January 10, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29331056/exploring-the-advantages-of-multiband-fmri-with-simultaneous-eeg-to-investigate-coupling-between-gamma-frequency-neural-activity-and-the-bold-response-in-humans
#13
Makoto Uji, Ross Wilson, Susan T Francis, Karen J Mullinger, Stephen D Mayhew
We established an optimal combination of EEG recording during sparse multiband (MB) fMRI that preserves high-resolution, whole-brain fMRI coverage while enabling broad-band EEG recordings which are uncorrupted by MRI gradient artefacts (GAs). We first determined the safety of simultaneous EEG recording during MB fMRI. Application of MB factor = 4 produced <1°C peak heating of electrode/hardware during 20 min of GE-EPI data acquisition. However, higher SAR sequences require specific safety testing, with greater heating observed using PCASL with MB factor = 4...
January 13, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29329277/synthesis-structural-characterization-antimicrobial-activity-and-in-vitro-biocompatibility-of-new-unsaturated-carboxylate-complexes-with-2-2-bipyridine
#14
Gina Vasile Scăețeanu, Mariana Carmen Chifiriuc, Coralia Bleotu, Crina Kamerzan, Luminiţa Măruţescu, Constantin G Daniliuc, Cătălin Maxim, Larisa Calu, Rodica Olar, Mihaela Badea
The synthesis, structural characterization, cytotoxicity, and antimicrobial properties of four new complexes formed by employing acrylate anion and 2,2'-bipyridine are reported herein. X-ray crystallography revealed the trinuclear nature of [Mn₃(2,2'-bipy)₂(C₃H₃O₂)₆] (1), meanwhile complexes with general formula [M(2,2'-bipy)(C₃H₃O₂)₂(H₂O)x]∙yH₂O ((2) M: Ni, x = 1, y = 0; (3) M: Cu, x = 1, y = 0; (4) M: Zn, x = 0, y = 1; 2,2'-bipy: 2,2'-bipyridine; C₃H₃O₂: acrylate anion) were shown to be mononuclear...
January 12, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29327368/measurement-of-residual-chemical-shift-anisotropies-in-compressed-pmma-gels-automatic-compensation-of-gel-isotropic-shift-contribution
#15
Fernando Hallwass, Rubens R Teles, Erich Hellemann, Christian Griesinger, Roberto R Gil, Armando Navarro-Vázquez
Mechanical compression of polymer gels provides a simple way for the measurement of Residual Chemical Shift Anisotropies (RCSAs), which then can be employed, on its own, or in combination with Residual Dipolar Couplings (RDCs), for structural elucidation purposes. RCSAs measured using compression devices needed a posteriori correction to account for the increase of the polymer to solvent ratio inside the swollen gel. This correction has been cast before in terms of a single free parameter which, as shown here, can be simultaneously optimized along with the components of the alignment tensor while still retaining discriminating power of the different relative configurations as illustrated in the stereochemical analysis of α-santonin and 10-epi-8-deoxycumambrin B...
January 11, 2018: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/29326804/occult-hepatitis-b-virus-infection-and-associated-genotypes-among-hbsag-negative-subjects-in-burkina-faso
#16
Birama Diarra, Albert Théophane Yonli, Pegdwendé Abel Sorgho, Tegwindé Rebeca Compaore, Abdoul Karim Ouattara, Wendpagnangdé Arsène Zongo, Issoufou Tao, Lassina Traore, Serge Théophile Soubeiga, Florencia Wendkuuni Djigma, Dorcas Obiri-Yeboah, Bolni-Marius Nagalo, Virginio Pietra, Rokia Sanogo, Jacques Simpore
Background: The presence of HBV DNA in the liver (with detectable or undetectable HBV DNA in the serum) of individuals tested HBsAg negative by currently available assays is defined occult B Infection (OBI). It remains a potential transmission threat and risk to HBV chronic infection. The purpose of this study was to determine the OBI prevalence among HBsAg negative subjects and to characterize associated genotypes. Methods: Blood samples of 219 HBsAg-negative subjects tested by ELISA were collected...
2018: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/29325756/parcours-de-soins-vers-la-mise-en-place-d%C3%A2-un-financement-adapt%C3%A3-%C3%A2-raisons-et-conditions-de-r%C3%A3-ussite
#17
Grégory Emery, Camille Le Fur, Anne-Aurélie Epis-de-Fleurian, Anne Josseran
No abstract text is available yet for this article.
December 16, 2017: Thérapie
https://www.readbyqxmd.com/read/29323531/an-efficient-gas-chromatography-mass-spectrometry-approach-for-the-simultaneous-analysis-of-deoxynivalenol-and-its-bacterial-metabolites-3-keto-don-and-3-epi-don
#18
Kaijie Tang, Huaizhi Liu, Xiu-Zhen Li, Yousef I Hassan, Suqin Shao, Ting Zhou
Deoxynivalenol (DON) is one of the major toxic secondary metabolites produced by Fusarium fungi in cereal grains. Among the many promising strategies of DON detoxification are the microbial and enzymatic ones, which transform DON to nontoxic DON metabolites. Thus, proper analytical methods are needed for those DON metabolites. In this study, a robust gas chromatography-mass spectrometry (GC-MS) procedure was developed and validated for the simultaneous analysis of DON and two of its bacterial metabolites, 3-keto-DON and 3- epi-DON...
January 11, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29323492/total-synthesis-of-pleuromutilin
#19
Elliot P Farney, Sean S Feng, Felix Schäfers, Sarah E Reisman
An 18-step synthesis of the antibiotic (+)-pleuromutilin is disclosed. The key steps of the synthesis include a highly stereoselective SmI2-mediated cyclization to establish the eight-membered ring, and a stereospecific transannular [1,5]-hydrogen atom transfer to set the C10 stereocenter. This strategy was also used to prepare (+)-12-epi-pleuromutilin. The chemistry described here will enable efforts to prepare new mutilin antibiotics.
January 11, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29322581/technical-implementations-of-light-sheet-microscopy
#20
REVIEW
Zagato Elisa, Brans Toon, Stefaan C De Smedt, Remaut Katrien, Neyts Kristiaan, Braeckmans Kevin
Fluorescence-based microscopy is among the most successful methods in biological studies. It played a critical role in the visualization of subcellular structures and in the analysis of complex cellular processes, and it is nowadays commonly employed in genetic and drug screenings. Among the fluorescence-based microscopy techniques, light sheet fluorescence microscopy (LSFM) has shown a quite interesting set of benefits. The technique combines the speed of epi-fluorescence acquisition with the optical sectioning capability typical of confocal microscopes...
January 11, 2018: Microscopy Research and Technique
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