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https://www.readbyqxmd.com/read/29147985/deciphering-the-growth-organic-acid-exudations-and-ionic-homeostasis-of-amaranthus-viridis-l-and-portulaca-oleracea-l-under-lead-chloride-stress
#1
Muhammad Tariq Javed, Muhammad Sohail Akram, Noman Habib, Kashif Tanwir, Qasim Ali, Nabeel Khan Niazi, Huma Gul, Naeem Iqbal
Lead (Pb) stress adversely affects in planta nutrient homeostasis and metabolism when present at elevated concentration in the surrounding media. The present study was aimed at investigation of organic acid exudations, elemental contents, growth, and lipid peroxidation in two wild plants (Amaranthus viridis L. and Portulaca oleracea L.), exhibiting differential root to shoot Pb translocation, under Pb stress. Plants were placed in soil spiked with lead chloride (PbCl2) concentrations of 0, 15, 30, 45, or 60 mg Pb/kg soil, in rhizoboxes supplied with nylon nets around the roots...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29147810/acceptability-of-a-tenofovir-disoproxil-fumarate-vaginal-ring-for-hiv-prevention-among-women-in-new-york-city
#2
Dana Watnick, Marla J Keller, Kimberly Stein, Laurie J Bauman
Vaginal rings for pre-exposure prophylaxis are a female-initiated HIV prevention method that does not require daily or coitally-dependent dosing. As part of a randomized placebo-controlled trial of a tenofovir disoproxil fumarate intravaginal ring, we assessed product acceptability through in-depth interviews with 18 women during and after 14 days of continuous use. Women reported that the ring was comfortable with few side effects, regardless of experimental arm. However, interest in future use by this cohort was modest for several reasons including: low self-perceived HIV risk; concern that use implied promiscuity; potential for interference with relationship formation and trust; concern for interference with menstruation and cleanliness; and worries about partners' acceptability and sexual pleasure...
November 16, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29147636/drug-induced-lupus-erythematosus-associated-with-antiretroviral-therapy-in-a-patient-with-human-immunodeficiency-virus-a-case-report
#3
Jazila Mantis, Ravi Bhavsar, Adriana Abrudescu
Antiretroviral medications are the mainstay of human immunodeficiency virus (HIV) therapy and some have been in use for over 20 years. To date, there have been no reported cases of antiretroviral therapy (ART) induced drug-induced lupus erythematosus (DILE). We present a case of a 35-year-old woman who received a combination of emtricitabine, rilpivirine, and tenofovir disoproxil fumarate for HIV treatment. Three years later, she developed an extensive rash and polyarthralgia in her extremities with laboratory findings significant for positive antinuclear antibody (ANA), anti-double stranded deoxyribonucleic acid (DNA) antibody (anti-dsDNA), and anti-histone antibody titers...
September 7, 2017: Curēus
https://www.readbyqxmd.com/read/29145330/pathologic-femoral-fracture-due-to-tenofovir-induced-fanconi-syndrome-in-patient-with-chronic-hepatitis-b-a-case-report
#4
You-Sung Suh, Dong-Il Chun, Sung-Woo Choi, Hwan-Woong Lee, Jae-Hwi Nho, Soon-Hyo Kwon, Jae-Ho Cho, Sung Hun Won
RATIONALE: We report a case of a hepatitis B virus (HBV)-positive patient with preexisting bone disease who developed tenofovir-induced Fanconi syndrome and subsequently sustained pathologic fracture. To our best knowledge, this is the first report in the English literature about pathologic femoral fracture due to tenofovir-induced Fanconi syndrome in patient with chronic hepatitis B (CHB). The present report describes detailed our experience with the diagnosis of pathologic femoral fracture due to tenofovir-induced Fanconi syndrome and treatment...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29144820/pheochromocytoma-a-genetic-and-diagnostic-update
#5
Leilani B Mercado-Asis, Katherine I Wolf, Ivana Jochmanova, David Taïeb
OBJECTIVE: Pheochromocytomas and paragangliomas (PPGLs) are neuroendocrine tumors derived from adrenal or extra-adrenal locations, respectively. Upon suspicion of PPGL, specific metabolomic, molecular, biochemical, imaging, and histopathological studies are performed to prove, localize, treat, and monitor disease progression. Recently, improved diagnostic tools allow physicians to accurately diagnose PPGL, even in patients presenting with small (less than 1 cm) or biochemically silent tumors, which previously delayed proper detection and treatment...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29143132/thermostable-and-highly-specific-l-aspartate-oxidase-from-thermococcus-litoralis-dsm-5473-cloning-overexpression-and-enzymological-properties
#6
Tsubasa Washio, Tadao Oikawa
We successfully expressed the L-aspartate oxidase homolog gene (accession no: OCC_06611) of Thermococcus litoralis DSM 5473 in the soluble fraction of Escherichia coli BL21 (DE3) using a pET21b vector with 6X His tag at its C-terminus. The gene product (Tl-LASPO) showed L-aspartate oxidase activity in the presence of FAD in vitro, and this report is the first that details an L-aspartate oxidase derived from a Thermococcus species. The homologs of Tl-LASPO existed mainly in archaea, especially in the genus of Thermococcus, Pyrococcus, Sulfolobus, and Halobacteria...
November 15, 2017: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/29141823/delayed-lymphocyte-re-population-following-discontinuation-of-dimethyl-fumarate-and-after-switching-to-other-disease-modifying-drug-therapies
#7
Bhupendra O Khatri, Sergey S Tarima, Benjamin Essig, Jean Sesing, Tayo Olapo
BACKGROUND: Dimethyl fumarate (DMF) reduces absolute lymphocyte counts, CD4, and CD8 counts, without significantly affecting total white blood cell counts. However, the recovery rate of these cells after discontinuation of DMF is unknown. The effect of subsequent disease modifying therapies (DMTs) on re-population rate is also unknown. OBJECTIVES: 1. To study the re-population rate of absolute lymphocytes, CD4, and CD8 counts back to baseline after discontinuation of DMF...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29141809/treatment-satisfaction-across-injectable-infusion-and-oral-disease-modifying-therapies-for-multiple-sclerosis
#8
Tessa Eagle, Fiona Stuart, Alicia S Chua, Allison LaRussa, Kaitlynne Leclaire, Sandra L Cook, Tanuja Chitnis, Howard L Weiner, Bonnie I Glanz, Brian C Healy
BACKGROUND: The recent approval of oral disease-modifying therapies (DMTs) for multiple sclerosis (MS) has provided patients with a new route of therapy administration. Little research has compared patients' experiences with and perceptions of injectable, infusion and oral MS therapies. METHODS: Three hundred fifty-seven treated MS patients enrolled in the CLIMB study completed the Treatment Satisfaction Questionnaire for Medication (TSQM). The TSQM provides information regarding perceived effectiveness, side effects, convenience and overall satisfaction...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29140875/bone-mineral-density-declines-twice-as-quickly-among-hiv-infected-women-compared-to-men
#9
Kristine M Erlandson, Jordan E Lake, Myung Sim, Julian Falutz, Carla M Prado, Ana Rita Domingues da Silva, Todd T Brown, Giovanni Guaraldi
BACKGROUND: Initial declines in bone mineral density (BMD) following antiretroviral therapy (ART) initiation in HIV are well described, but data on long-term changes and risk factors for decline, particularly among women, are limited. METHODS: HIV-infected men and women in the Modena Metabolic Clinic underwent dual-energy X-ray absorptiometry (DXA) scans every 6-12 months for up to 10 years (median 4.6 years). Mixed effect regression model in combined and sex-stratified models determined annual rates of decline and clinical factors associated with BMD...
November 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29140245/bacterial-fumarase-and-l-malic-acid-are-evolutionary-ancient-components-of-the-dna-damage-response
#10
Esti Singer, Yardena Bh Silas, Sigal Ben-Yehuda, Ophry Pines
Fumarase is distributed between two compartments of the eukaryotic cell. The enzyme catalyses the reversible conversion of fumaric to L-malic acid in mitochondria as part of the tricarboxylic acid (TCA) cycle, and in the cytosol/nucleus as part of the DNA damage response (DDR). Here we show that fumarase of the model prokaryote Bacillus subtilis (Fum-bc) is induced upon DNA damage, co-localized with the bacterial DNA and is required for the DDR. Fum-bc can substitute for both eukaryotic functions in yeast. Furthermore, we found that the fumarase dependent intracellular signaling of the B...
November 15, 2017: ELife
https://www.readbyqxmd.com/read/29140230/effect-of-tenofovor-diproxil-fumarate-on-renal-function-and-urinalysis-abnormalities-in-hiv-infected-cameroonian-adults
#11
Carlos Fritzsche, Jens Rudolph, Barbara Huenten-Kirsch, Christoph J Hemmer, Robert Tekoh, Pius B Kuwoh, Aenne Glass, Emil C Reisinger
In Sub-Saharan Africa, the prevalence of HIV-associated kidney diseases is as high as 53.3%. Combined antiretroviral treatment (cART), especially tenofovir disoproxil fumarate (TDF), is known to be nephrotoxic. We undertook this cross-sectional study conducted in 2015 at the Regional Hospital Limbe in the Southwest Region of Cameroon to determine the prevalence of renal dysfunction and its correlates among treatment-experienced HIV-infected patients on TDF and treatment-naïve patients. In April 2016, a follow-up was performed on those who had been treatment-naïve and were started on cART after enrolment in the study...
November 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29138653/the-incidence-of-first-line-antiretroviral-treatment-changes-and-related-factors-among-hiv-infected-sex-workers-in-nairobi-kenya
#12
Frank Ndaks Ndakala, Julius Otieno Oyugi, Margaret Ng'wono Oluka, Joshua Kimani, Georg Martin Norbert Behrens
Introduction: In many settings, several factors including adverse drug reactions and clinical failure can limit treatment choices for combined antiretroviral therapy (cART). The aim of the study was to describe the incidence of first-line cART changes and associated factors in a cohort of Kenyan sex workers. Methods: This was a retrospective review of medical records collected from 2009 to 2013. The review included records of HIV-infected patients aged ≥ 18 years, who received either stavudine or zidovudine or tenofovir disoproxil fumarate-based regimens...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29138555/the-efficacy-of-extrafine-beclomethasone-dipropionate-formoterol-fumarate-in-copd-patients-who-are-not-frequent-exacerbators-a-post-hoc-analysis-of-the-forward-study
#13
Dave Singh, Stefano Vezzoli, Stefano Petruzzelli, Alberto Papi
The GOLD 2017 strategy document recommends that the pharmacological management of COPD patients be based on the risk of future exacerbations and the severity of symptoms. A threshold of two moderate exacerbations or one hospitalization is used to define high-risk patients. The FORWARD study was a randomized, double-blind, parallel-group trial that compared 48 weeks' treatment with extrafine beclomethasone dipropionate plus formoterol fumarate (BDP-FF) versus FF in severe COPD patients with a history of one or more exacerbations in the previous year...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29136775/high-parathyroid-hormone-concentration-in-tenofovir-treated-patients-are-due-to-inhibition-of-calcium-sensing-receptor-activity
#14
Alessandra Mingione, Katia Maruca, Federica Chiappori, Francesca Pivari, Caterina Brasacchio, Tiziana Quirino, Ivan Merelli, Laura Soldati, Paolo Bonfanti, Stefano Mora
Bone health impairment is a common finding in HIV-infected patients on antiretroviral treatment. High serum parathyroid hormone (PTH) concentration in patients on antiretroviral treatment containing tenofovir disoproxil fumarate (TDF) has been reported. Hyperparathyroidism was not always sustained by a reduction in vitamin D concentration. We thus hypothesized a direct inhibitory effect of TDF on the Calcium-sensing receptor (CaSR), leading to hyperparathyroidism. Human embryonic kidney cells were transfected with CASR wild-type gene or mutated in different sites (N124K, T1051G, C788T, T888M)...
November 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29135656/frequency-of-monitoring-kidney-function-in-hiv-uninfected-persons-using-daily-oral-tenofovir-disoproxil-fumarate-pre-exposure-prophylaxis
#15
Kenneth K Mugwanya, Jared M Baeten, Christina Wyatt, Nelly R Mugo, Connie L Celum, Allan Ronald, John Kiarie, Elly Katabira, Renee Heffron
BACKGROUND: Wide-scale implementation of oral tenofovir-based pre-exposure prophylaxis (PrEP) for HIV prevention is now policy in many settings. However, the optimal frequency for monitoring kidney function remains uncertain. We investigated the impact of 6-monthly compared to 3-monthly creatinine clearance (CrCl) monitoring on the identification of moderate kidney dysfunction, defined as CrCl <60 mL/min. METHODS: Data were from two prospective daily oral PrEP studies in Kenya and Uganda: the Partners PrEP Study, a randomized safety and efficacy trial of PrEP that conducted 3-monthly CrCl monitoring (n=4404) and the Partners Demonstration Project (n=954), an open-label delivery study of PrEP that used 6-monthly monitoring...
November 6, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29135651/comparison-of-the-pharmacokinetics-and-pharmacodynamics-of-single-dose-tenofovir-vaginal-film-and-gel-formulation-fame-05
#16
Jennifer A Robinson, Mark A Marzinke, Edward J Fuchs, Rahul P Bakshi, Hans M L Spiegel, Jenell S Coleman, Lisa C Rohan, Craig W Hendrix
OBJECTIVE: While pre-exposure prophylaxis with oral tenofovir (TFV) disoproxil fumarate/emtricitabine reduces HIV acquisition rates, poor adherence to and acceptability of daily vaginal gels has led to development of vaginal film formulations to improve adherence and, potentially, enable episodic use. STUDY DESIGN: In this two-arm, cross-over study of a fast-dissolving tenofovir film (40 mg) compared to a previously studied semisolid tenofovir 1% gel (40 mg), 10 healthy women received a single vaginal dose of each study product...
November 7, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29133864/effects-of-microgravity-on-osteoblast-mitochondria-a-proteomic-and-metabolomics-profile
#17
Anna Michaletti, Magda Gioia, Umberto Tarantino, Lello Zolla
The response of human primary osteoblasts exposed to simulated microgravity has been investigated and analysis of metabolomic and proteomic profiles demonstrated a prominent dysregulation of mitochondrion homeostasis. Gravitational unloading treatment induced a decrease in mitochondrial proteins, mainly affecting efficiency of the respiratory chain. Metabolomic analysis revealed that microgravity influenced several metabolic pathways; stimulating glycolysis and the pentose phosphate pathways, while the Krebs cycle was interrupted at succinate-fumarate transformation...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133214/antibacterial-activity-and-pharmacokinetic-profile-of-a-promising-antibacterial-agent-14-o-4-amino-6-hydroxy-pyrimidine-2-yl-thioacetyl-mutilin
#18
Ruofeng Shang, Yunpeng Yi, Chao Zhang, Yunxing Fu, Jianping Liang, Wanxia Pu
A new pleuromutilin derivative, 14-O-[(4-Amino-6-hydroxy-pyrimidine-2-yl)thioacetyl] mutilin (APTM), has been synthesized and proved most potent antibacterial agent in in vitro assays, suggesting that further development of this compound may lead to a promising antibacterial drug. In this study, we further evaluated the cytotoxicity, antibacterial efficacy and the pharmacokinetic profile of APTM. In BRL 3A cells, 50% of viability was obtained when 363μg/mL of APTM was used, while retapamulin and tiamulin fumarate needed 49 and 28μg/mL, respectively, to reach this viability...
November 10, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29130499/combined-metabolomic-and-correlation-networks-analyses-reveal-fumarase-insufficiency-altered-amino-acids-metabolism
#19
Entai Hou, Xian Li, Zerong Liu, Fuchang Zhang, Zhongmin Tian
Fumarase catalyzes the interconversion of fumarate and L-malate in the tricarboxylic acid cycle. Fumarase insufficiencies were associated with increased level of fumarate and decreased level of malate and exacerbated salt-induced hypertension. To gain insights into the metabolism profiles that induced by fumarase insufficiency and identify key regulatory metabolites, we applied a GC-MS based metabolomics platform coupled with a network approach to analyze fumarase insufficient HUVEC cells and negative controls...
November 11, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29128972/persistence-with-dimethyl-fumarate-in-relapsing-remitting-multiple-sclerosis-a-population-based-cohort-study
#20
Irene Eriksson, Thomas Cars, Fredrik Piehl, Rickard E Malmström, Björn Wettermark, Mia von Euler
PURPOSE: To describe patients initiating dimethyl fumarate (DMF) and measure persistence with DMF, discontinuation, and switching in treatment-naïve DMF patients and patients switching to DMF from other multiple sclerosis disease-modifying treatments (DMTs). METHODS: A population-based cohort study of all Stockholm County residents initiating DMF from 9 May 2014 until 31 May 2017. All data were derived from a regional database that collects individual-level data on healthcare and drug utilization of all residents...
November 11, 2017: European Journal of Clinical Pharmacology
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