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https://www.readbyqxmd.com/read/29668138/-molecular-typing-of-leishmania-leishmania-amazonensis-and-species-of-the-subgenus-viannia-associated-with-cutaneous-and-mucosal-leishmaniasis-in-colombia-a-concordance-study
#1
Clemencia Ovalle-Bracho, Carolina Camargo, Yira Díaz-Toro, Marcela Parra-Muñoz
INTRODUCTION: Multilocus enzyme electrophoresis (MLEE) is the reference standard for the characterization of Leishmania species. The test is restricted to specialized laboratories due to its technical complexity, cost, and time required to obtain results. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) is used to identify Leishmania species. OBJECTIVE: To establish the concordance between the two tests as identifying methods for circulating species in Colombia...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29668136/-a-fatal-case-series-of-rocky-mountain-spotted-fever-in-sonora-m%C3%A3-xico
#2
Jesús Delgado-De la Mora, Jesús David Licona-Enríquez, Marcia Leyva-Gastélum, David Delgado-De la Mora, Adela Rascón-Alcantar, Gerardo Álvarez-Hernández
INTRODUCTION: Rocky Mountain spotted fever is a highly lethal infectious disease, particularly if specific treatment with doxycycline is given belatedly. OBJECTIVE: To describe the clinical profile of fatal Rocky Mountain spotted fever cases in hospitalized patients in the state of Sonora, México. MATERIALS AND METHODS: We conducted a cross-sectional study on a series of 47 deaths caused by Rickettsia rickettsii from 2013 to 2016. The diagnosis of Rocky Mountain spotted fever was confirmed in a single blood sample by polymerase chain reaction (PCR) or by a four-fold increase in immunoglobulin G measured in paired samples analyzed by indirect immunofluorescence...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29668077/jc-and-bk-virus-dna-detection-in-archival-slides-of-urine-cytospin-from-renal-transplant-patients
#3
Patricia Assis, Carlos Eduardo Carvalho, Marcelo Soares Silva, Bruna Ribeiro, Maria da Gloria Carvalho
BACKGROUND: Although identifying cytological viral inclusions (decoy cells) in the urine is relatively easy, distinguishing between Polyomaviruses BKV and JCV is not possible. Few studies have been published regarding JCV detection in kidney transplant recipients. OBJECTIVE: To evaluate the incidence of BKV and JCV DNA in archival slides of urine cytospin material from renal transplant patients. METHODS: A total of 44 urine specimens were evaluated cytologically for the presence of viral inclusions (decoy cells) and by nested polymerase chain reaction to differentiate between JCV and BKV in DNA isolated from archival slides of urine cytospin material...
April 18, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29668071/human-papillomavirus-an-unlikely-etiologic-factor-in-sinonasal-inverted-papilloma
#4
Sepideh Mohajeri, Chi Lai, Bibianna Purgina, Dakheelallah Almutairi, Tabassom Baghai, Jim Dimitroulakos, Shaun Kilty
OBJECTIVES/HYPOTHESIS: Tenuous evidence has supported the hypothesis that sinonasal inverted papilloma (SNIP) arise from human papillomavirus (HPV) infection. To clarify the role of HPV in SNIP, all known HPV sub-types were evaluated by employing a robust polymerase chain reaction-based method in a wide variety of SNIPs from a single institution. STUDY DESIGN: Retrospective surgical specimen tumor sample analysis. METHODS: HPV positivity among SNIP samples and those with squamous cell carcinoma (SCC) were compared...
April 18, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29668038/photodynamic-therapy-induces-antifibrotic-alterations-in-primary-human-vocal-fold-fibroblasts
#5
Chi Zhang, Jiajia Wang, Adriana Chou, Ting Gong, Erin E Devine, Jack J Jiang
OBJECTIVES/HYPOTHESIS: Photodynamic therapy (PDT) is a promising treatment modality for laryngeal dysplasia, early-stage carcinoma, and papilloma, and was reported to have the ability to preserve laryngeal function and voice quality without clinical fibrotic response. We aimed to investigate the mechanism behind the antifibrotic effects of PDT on primary human vocal fold fibroblasts (VFFs) in vitro. STUDY DESIGN: In vitro analysis from one human donor. METHODS: Cell viability of VFFs in response to varying doses of PDT was investigated by the Cell Counting Kit-8 method...
April 18, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29667992/naked-eye-and-electrochemical-detection-of-isothermally-amplified-hotair-long-non-coding-rna
#6
Md Nazmul Islam, Sofia Moriam, Muhammad Umer, Hoang-Phuong Phan, Carlos Salomon, Richard Kline, Nam-Trung Nguyen, Muhammad J A Shiddiky
An inexpensive, simple and rapid sensor platform capable of detecting cancer-related long non-coding RNA (lncRNA) with high accuracy is of great interest in the field of molecular diagnostics. Herein, we report on the development of a new colorimetric and electrochemical assay platform for long non-coding HOX transcript antisense intergenic RNA (HOTAIR) detection. Isothermal reverse transcription-recombinase polymerase amplification (RT-RPA) was performed to amplify HOTAIR sequences from a RNA pool extracted from a designated number of ovarian cancer cells and a small cohort of plasma samples derived from patients with ovarian cancer...
April 18, 2018: Analyst
https://www.readbyqxmd.com/read/29667858/longitudinal-analysis-of-varicella-zoster-virus-specific-antibodies-in-systemic-lupus-erythematosus-no-association-with-subclinical-viral-reactivations-or-lupus-disease-activity
#7
C Rondaan, C C van Leer, S van Assen, H Bootsma, K de Leeuw, S Arends, N A Bos, J Westra
Systemic lupus erythematosus (SLE) patients are at high risk of herpes zoster. Previously, we found increased immunoglobulin (Ig)G levels against varicella-zoster virus (VZV) in SLE patients compared to controls, while antibody levels against diphtheria and cellular immunity to VZV were decreased. We aimed to test our hypothesis that increased VZV-IgG levels in SLE result from subclinical VZV reactivations, caused by stress because of lupus disease activity or immunosuppressive drug use. Methods Antibody levels to VZV (IgG, IgA, IgM), total IgG and VZV-DNA were longitudinally determined in the serum of 34 SLE patients, using enzyme-linked immunosorbent assay and polymerase chain reaction...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29667819/synthesis-and-evolution-of-a-tna-aptamer-bearing-7-deaza-7-substituted-guanosine-residues
#8
Hui Mei, Jen-Yu Liao, Randi M Jimenez, Yajun Wang, Saikat Bala, Cailen McCloskey, Christopher Switzer, John C Chaput
In vitro selection experiments carried out on artificial genetic polymers require robust and faithful methods for copying genetic information back and forth between DNA and xeno-nucleic acids (XNA). Previously, we have shown that Kod-RI, an engineered polymerase developed to transcribe DNA templates into threose nucleic acid (TNA), can function with high fidelity in the absence of manganese ions. However, the transcriptional efficiency of this enzyme diminishes greatly when individual templates are replaced with libraries of DNA sequences, indicating that manganese ions are still required for in vitro selection...
April 18, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29667646/leptospirosis-and-workplace-environmental-risk-factors-among-cattle-farmers-in-northeastern-malaysia
#9
Aziah Binti Daud, Nik Mohd Hafiz Mohd Fuzi, Wan Mohd Zahiruddin Wan Mohammad, Fairuz Amran, Nabilah Ismail, Mohd Mokhtar Arshad, Suratan Kamarudin
BACKGROUND: Leptospirosis is an emerging zoonosis and its occurrence has been reported to be rising globally. The environment plays an important role in the survival of Leptospira and determines the risk of infection. Those who were exposed to and had contact with contaminated environment through their occupational, recreational and other activities can be infected with the organism. OBJECTIVE: To determine the seroprevalence of leptospirosis among cattle farmers, prevalence of pathogenic Leptospira, and the workplace environmental risk factors for leptospirosis among cattle farmers in northeastern Malaysia...
April 2018: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29667206/surveillance-of-donated-blood-during-the-2016-arbovirus-outbreak-in-brazil
#10
Rohit Sharma, Larissa Costa Santos, Robson Amaro da Silva, Caroline Vieira Gonçalves, Stéfano de Melo Calado, Denisar P Santos, Josana Passos de Andrade de Melo, Rita de Cássia Pontello Rampazzo, Luciana Requião, Marco Aurélio Krieger, Manoel Barral-Netto, Camila I de Oliveira
Reports of arboviral transmission via blood transfusion may be a cause of concern among asymptomatic infected donors. This study evaluated the presence of arboviruses in donated blood products during the 2016 outbreak in Vitória da Conquista (Bahia-Brazil). Serum samples (n = 676) were screened for ZIKV, CHIKV and the four DENV serotypes using a one-step reverse transcriptase-based Real-Time Polymerase Chain Reaction (RT-PCR). No samples tested positive for any of the targets, whereas positive controls performed as expected...
April 17, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29667134/two-phase-i-pharmacokinetic-and-pharmacodynamic-studies-of-dfp-10917-a-novel-nucleoside-analog-with-14-day-and-7-day-continuous-infusion-schedules
#11
Kamalesh Sankhala, Chris H Takimoto, Alain C Mita, Henry Xiong, Jordi Rodón, Amir Mehrvarz Sarshekeh, K Burns, Kenzo Iizuka, Scott Kopetz
Purpose DFP-10917 is a novel deoxycytidine analog with a unique mechanism of action. Brief exposure to high concentrations of DFP-10917 inhibits DNA polymerase resulting in S-phase arrest, while prolonged exposure to DFP-10917 at low concentration causes DNA fragmentation, G2/M-phase arrest, and apoptosis. DFP-10917 demonstrated activity in tumor xenografts resistant to other deoxycytidine analogs. Experimental design Two phase I studies assessed the safety, pharmacokinetic, pharmacodynamic and preliminary efficacy of DFP-10917...
April 18, 2018: Investigational New Drugs
https://www.readbyqxmd.com/read/29667127/bilateral-olfactory-mucosa-damage-induces-the-disappearance-of-olfactory-glomerulus-and-reduces-the-expression-of-extrasynaptic-%C3%AE-5gaba-a-rs-in-the-hippocampus-in-early-postnatal-sprague-dawley-rats
#12
Xiaomin Zheng, Liang Liang, Changchun Hei, Wenjuan Yang, Tingyuan Zhang, Kai Wu, Yi Qin, Qing Chang
Chloroform-induced olfactory mucosal degeneration has been reported in adult rats following gavage. We used fixed-point chloroform infusions on different postnatal days (PNDs) to investigate the effects of early olfactory bilateral deprivation on the main olfactory bulbs in Sprague Dawley rats. The experimental groups included rats infused with chloroform (5 μl) or saline (sham, 5 μl) on PNDs 3 and 8, and rats not receiving infusions (control) (n = 6 in all groups). Rats receiving chloroform on PND 3 showed significant hypoevolutism when compared to those in other groups (P < 0...
April 17, 2018: Neurotoxicity Research
https://www.readbyqxmd.com/read/29666961/a-novel-sampling-method-to-detect-airborne-influenza-and-other-respiratory-viruses-in-mechanically-ventilated-patients-a-feasibility-study
#13
Alicia B Mitchell, Benjamin Tang, Maryam Shojaei, Lachlan S Barnes, Marek Nalos, Brian G Oliver, Anthony S McLean
BACKGROUND: Respiratory viruses circulate constantly in the ambient air. The risk of opportunistic infection from these viruses can be increased in mechanically ventilated patients. The present study evaluates the feasibility of detecting airborne respiratory viruses in mechanically ventilated patients using a novel sample collection method involving ventilator filters. METHODS: We collected inspiratory and expiratory filters from the ventilator circuits of mechanically ventilated patients in an intensive care unit over a 14-month period...
April 17, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29666658/phylogenetic-analysis-of-dengue-virus-in-bangkalan-madura-island-east-java-province-indonesia
#14
Teguh Hari Sucipto, Tomohiro Kotaki, Kris Cahyo Mulyatno, Siti Churrotin, Amaliah Labiqah, Soegeng Soegijanto, Masanori Kameoka
Dengue virus (DENV) infection is a major health issue in tropical and subtropical areas. Indonesia is one of the biggest dengue endemic countries in the world. In the present study, the phylogenetic analysis of DENV in Bangkalan, Madura Island, Indonesia, was performed in order to obtain a clearer understanding of its dynamics in this country. A total of 359 blood samples from dengue-suspected patients were collected between 2012 and 2014. Serotyping was conducted using a multiplex Reverse Transcriptase-Polymerase Chain Reaction and a phylogenetic analysis of E gene sequences was performed using the Bayesian Markov chain Monte Carlo (MCMC) method...
2018: Journal of Tropical Medicine
https://www.readbyqxmd.com/read/29666618/reassortant-h5n1-avian-influenza-virus-bearing-pb2-gene-from-a-2009-pandemic-h1n1-exhibits-increased-pathogenicity-in-mice
#15
Xian Lin, Shiman Yu, Kelei Guo, Xin Sun, Haiming Yi, Meilin Jin
Reassortment is a key driving force of the evolution and host adaptation of the influenza virus. A(H1N1)pdm2009 (pdm09), a novel H1N1 influenza viral subtype, caused a pandemic in 2009. The strain was established in pig herds and cocirculated with the highly pathogenic H5N1 avian influenza virus. The coexistence of pdm09 with H5N1 raises concerns that reassortment may cause the development of novel viral strains with unpredictable virulence. Given that the viral polymerase subunit PB2 is a determinant of host range and pathogenicity, and that the substantial amino acid differences in PB2 between pdm09 and H5N1, including positions 590/591 and 271, which are shown to play key roles in enhanced polymerase activity in mammalian host cells, we generated a reassortant virus containing PB2 derived from a pdm09 (A/Liaoning/1/2009, LN/09) to investigate if pdm09-derived PB2 can function in a heterologous avian virus isolate as an adaptive strategy, with H5N1 (A/duck/Hubei/hangmei01/2006, HM/06) as the backbone...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29666587/cardioprotective-effects-of-qishenyiqi-dripping-pills-on-transverse-aortic-constriction-induced-heart-failure-in-mice
#16
Guoran Ruan, Haojin Ren, Chi Zhang, Xiaogang Zhu, Chao Xu, Liyue Wang
QiShenYiQi dripping pills (QSYQ), a traditional Chinese medicine, are commonly used to treat coronary heart disease, and QSYQ was recently approved as a complementary treatment for ischemic heart failure in China. However, only few studies reported on whether QSYQ exerts a protective effect on heart failure induced by pressure overload. In this study, we explored the role of QSYQ in a mouse model of heart failure induced by transverse aortic constriction (TAC). Twenty-eight C57BL/6J mice were divided into four groups: Sham + NS group, Sham + QSYQ group, TAC + NS group, and TAC + QSYQ group...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29666379/genome-wide-excision-repair-in-arabidopsis-is-coupled-to-transcription-and-reflects-circadian-gene-expression-patterns
#17
Onur Oztas, Christopher P Selby, Aziz Sancar, Ogun Adebali
Plants are exposed to numerous DNA-damaging stresses including the exposure to ultraviolet (UV) component of solar radiation. They employ nucleotide excision repair to remove DNA-bulky adducts and to help eliminate UV-induced DNA lesions, so as to maintain their genome integrity and their fitness. Here, we generated genome-wide single-nucleotide resolution excision repair maps of UV-induced DNA damage in Arabidopsis at different circadian time points. Our data show that the repair of UV lesions for a large fraction of the genome is controlled by the joint actions of the circadian clock and transcription by RNA polymerase II...
April 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29666369/lithium-associated-transcriptional-regulation-of-crmp1-in-patient-derived-olfactory-neurons-and-symptom-changes-in-bipolar-disorder
#18
Charlee K McLean, Soumya Narayan, Sandra Y Lin, Narayan Rai, Youjin Chung, MariaMananita S Hipolito, Nicola G Cascella, John I Nurnberger, Koko Ishizuka, Akira S Sawa, Evaristus A Nwulia
There is growing evidence that lithium used in the treatment of bipolar disorder (BD) affects molecular targets that are involved in neuronal growth, survival, and maturation, but it remains unclear if neuronal alterations in any of these molecules predict specific symptom changes in BD patients undergoing lithium monotherapy. The goals of this study were to (a) determine which molecular changes in the olfactory neurons of symptomatic patients receiving lithium are associated with antimanic or antidepressant response, and (b) uncover novel intraneuronal regulatory mechanisms of lithium therapy...
April 18, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29666332/expression-profiles-of-amh-and-foxl2-in-schizothorax-kozlovi-and-their-response-to-temperature-during-the-early-developmental-stage
#19
Yongfeng He, Xuge Wang, Xingbing Wu, Yongjiu Zhu, Deguo Yang
To elucidate the role of amh and foxl2 in sex differentiation of the teleost fish Schizothorax kozlovi, the full-length cDNAs were cloned from the mature testis and ovary by rapid amplification of cDNA ends (RACE), and their relative mRNA expression levels were determined by quantitative real-time polymerase chain reaction among tissues and temperature groups. The complete amh and foxl2 cDNAs of S. kozlovi were 2060 bp and 1750 bp, which encoded 568 and 306 amino acids, respectively. The amh were expressed only in gonads, while foxl2 was expressed in the gills, brain and gonads, both exhibiting relatively high tissue specificity...
March 2018: Journal of Genetics
https://www.readbyqxmd.com/read/29666292/human-immunodeficiency-virus-tat-protein-aids-v-region-somatic-hypermutation-in-human-b-cells
#20
Xiaohua Wang, Zhi Duan, Guojun Yu, Manxia Fan, Matthew D Scharff
Long-term survivors of human immunodeficiency virus (HIV) infection have been shown to have a greatly increased incidence of B cell lymphomas. This increased lymphomagenesis suggests some link between HIV infection and the destabilization of the host B cell genome, a phenomenon also suggested by the extraordinary high frequency of mutation, insertion, and deletion in the broadly neutralizing HIV antibodies. Since HIV does not infect B cells, the molecular mechanisms of this genomic instability remain to be fully defined...
April 17, 2018: MBio
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