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Emerging infection

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https://www.readbyqxmd.com/read/29458207/co-spray-drying-of-hygroscopic-kanamycin-with-the-hydrophobic-drug-rifampicin-to-improve-the-aerosolization-of-kanamycin-powder-for-treating-respiratory-infections
#1
Mohammad A M Momin, Ian G Tucker, Colin S Doyle, John A Denman, Shubhra Sinha, Shyamal C Das
High dose delivery of drugs to the lung using a dry powder inhaler (DPI) is an emerging approach to combat drug-resistant local infections. To achieve this, highly aerosolizable powders are required. We hypothesized that co-spray-drying kanamycin, a hydrophilic hygroscopic antibiotic, with rifampicin, a hydrophobic antibiotic, would produce inhalable particles with surfaces enriched in rifampicin. Such particles would have higher aerosolization than kanamycin alone, and minimise the mass of powder for inhalation avoiding use of non-active excipients...
February 16, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29458130/impact-of-rna-polymerase-i-inhibitor-cx-5461-on-viral-kinase-dependent-and-independent-cytomegalovirus-replication
#2
Kristen N Westdorp, Scott S Terhune
Human cytomegalovirus (HCMV) infections cause congenital birth defects and disease in immunosuppressed individuals. Antiviral compounds can control infection yet their use is restricted due to concerns of toxicity and the emergence of drug resistant strains. We have evaluated the impact of an RNA Polymerase I (Pol I) inhibitor, CX-5461 on HCMV replication. CX-5461 inhibits Pol I-mediated ribosomal DNA transcription by binding G-quadruplex DNA structures and also activates cellular stress response pathways. The addition of CX-5461 at both early and late stages of the HCMV infection inhibited viral DNA synthesis and virus production...
February 16, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29457209/agreement-between-integrated-management-of-childhood-illness-and-final-diagnosis-in-acute-respiratory-tract-infections
#3
Sıddika Songül Yalçın, Beril Özdemir, Sadriye Özdemir, Esra Baskın
OBJECTIVE: To evaluate the agreement between integrated management of childhood illness (IMCI) and final diagnosis in patients presenting with cough at the second and third level health institutions. METHODS: This cross-sectional study included 373 children aged 2-60 mo who presented with cough at the pediatric emergency and outpatient clinics in the Department of Pediatrics. After clinical examination of children, body temperature, respiratory rate, saturation, presence or absence of the chest indrawing, rales, wheezing and laryngeal stridor were recorded...
February 19, 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29456969/mutation-of-agr-is-associated-with-the-adaptation-of-staphylococcus-aureus-to-the-host-during-chronic-osteomyelitis
#4
Carlos M Suligoy, Santiago M Lattar, Mariángeles Noto Llana, Cintia D González, Lucía P Alvarez, D Ashley Robinson, Marisa I Gómez, Fernanda R Buzzola, Daniel O Sordelli
Selection pressures exerted on Staphylococcus aureus by host factors may lead to the emergence of mutants better adapted to the evolving conditions at the infection site. This study was aimed at identifying the changes that occur in S. aureus exposed to the host defense mechanisms during chronic osteomyelitis and evaluating whether these changes affect the virulence of the organism. Genome assessment of two S. aureus isolates collected 13 months apart (HU-85a and HU-85c) from a host with chronic osteomyelitis was made by whole genome sequencing...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29456773/molecular-characterization-of-multidrug-resistant-uropathogenic-e-coli-isolates-from-jordanian-patients
#5
Yacoub R Nairoukh, Azmi M Mahafzah, Amal Irshaid, Asem A Shehabi
Background: Emergence of multi-drug resistant uropathogenic E. coli strains is an increasing problem to empirical treatment of urinary tract infections in many countries. This study investigated the magnitude of this problem in Jordan. Methods: A total of 262 E. coli isolates were recovered from urine samples of Jordanian patients which were suspected to have urinary tract infections (UTIs). All isolates were primarily identified by routine biochemical tests and tested for antimicrobial susceptibility by disc diffusion method...
2018: Open Microbiology Journal
https://www.readbyqxmd.com/read/29456340/acute-febrile-encephalopathy-in-children-a-prospective-study-of-clinical-features-etiology-mortality-and-risk-factors-from-western-india
#6
Kirti Gupta, Charul S Purani, Anirban Mandal, Amitabh Singh
Introduction: Acute febrile encephalopathy (AFE) in children is a medical emergency and could be a manifestation of many systemic and central nervous system pathologies. The clinical features of AFE are nonspecific and etiological spectrum variable depending on the studied population. Materials and Methods: A prospective, observational study was carried out including children aged between 1 month and 12 years with AFE admitted to the Pediatric Intensive Care Unit of a tertiary care hospital in Western India...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29455847/the-fate-choice-between-effector-and-memory-t-cell-lineages-asymmetry-signal-integration-and-feedback-to-create-bistability
#7
Ronald A Backer, Pleun Hombrink, Christina Helbig, Derk Amsen
CD8+ T cells clear primary infections with intracellular pathogens and provide long-term immunity against reinfection. Two different types of CD8+ T cells are responsible for these functions: short-lived effector T cells and memory T cells. The cellular relationship between these two types of CD8+ T cells has been subject to much investigation. Both cell types can derive from a single naïve CD8+ T cell precursor. Their generation requires a fate choice early during a T cell response. As a result, two populations of T cells emerge...
2018: Advances in Immunology
https://www.readbyqxmd.com/read/29455553/correlates-of-missed-clinic-visits-among-youth-living-with-hiv
#8
Nicholas Tarantino, Larry K Brown, Laura Whiteley, M Isabel Fernández, Sharon L Nichols, Gary Harper
Youth living with HIV (YLH) have significant problems with attending their medical appointments. Poor attendance, consequently, predicts viral non-suppression and other negative health outcomes. To identity targets of intervention, this cross-sectional study examined correlates of past-year missed clinic visits among YLH (N = 2125) attending HIV clinics in the United States and Puerto Rico. Thirty-six percent of YLH missed two or more visits in the past year. Several factors were associated with missed visits in our regression model...
February 17, 2018: AIDS Care
https://www.readbyqxmd.com/read/29455437/live-donor-liver-transplantation-for-acute-liver-failure-a-single-center-experience
#9
Siddharth Mehrotra, Naimish Mehta, Prashantha S Rao, Shailendra Lalwani, Vivek Mangla, Samiran Nundy
INTRODUCTION: Acute liver failure (ALF) is an indication for emergency liver transplantation (LT). Although centers performing only deceased donor liver transplants (DDLT) have shown improved outcomes in this situation, they still have relatively long waiting lists. An alternative would be living donor liver transplantation (LDLT), which has shown equivalent outcomes in the elective situation but there is limited evidence of its results in ALF. AIM: The purpose of this study was to assess the outcomes in patients with ALF undergoing emergency LDLT in our center in Delhi, India...
February 17, 2018: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/29455432/serum-mirna-27a-and-mirna-18b-as-potential-predictive-biomarkers-of-hepatitis-c-virus-associated-hepatocellular-carcinoma
#10
Nearmeen M Rashad, Amal S El-Shal, Sally M Shalaby, Salem Y Mohamed
Hepatitis C virus (HCV) infection remains the main risk factor for chronic hepatitis (CHC), liver cirrhosis, and hepatocellular carcinoma (HCC). Changes in microRNA (miRNA) profiles can be associated with HCV infection and may either favor or inhibit the virus and/or its complication. Moreover, miRNAs have emerged as key regulators of various cancers including HCC. The aim of this work was to investigate the potentail role of miRNA-27a and miRNA-18b expression levels as non-invasive predictive biomarkers of hepatitis C virus-associated HCC...
February 17, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29455044/timing-of-surgical-site-infection-and-pulmonary-complications-after-laparotomy
#11
Ossian Gundel, Sofie Kirchhoff Gundersen, Rikke Maria Dahl, Lars Nannestad Jørgensen, Lars S Rasmussen, Jørn Wetterslev, Ditte Sæbye, Christian S Meyhoff
BACKGROUND: Surgical site infection (SSI) and other postoperative complications are associated with high costs, morbidity, secondary surgery, and mortality. Many studies have identified factors that may prevent SSI and pulmonary complications, but it is important to know when they in fact occur. The aim of this study was to investigate the diagnostic timing of surgical site infections and pulmonary complications after laparotomy. MATERIAL AND METHODS: This is a secondary analysis of the PROXI trial which was a randomized clinical trial conducted in 1400 patients undergoing elective or emergent laparotomy...
February 15, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29454978/ribonucleotide-reductase-as-a-drug-target-against-drug-resistance-mycobacterium-leprae-a-molecular-docking-study
#12
Partha Sarathi Mohanty, Avi Kumar Bansal, Farah Naaz, Umesh Datta Gupta, Vivek Dhar Dwivedi, Umesh Yadava
Leprosy is a chronic infection of skin and nerve caused by Mycobacterium leprae. The treatment is based on standard multi drug therapy consisting of dapsone, rifampicin and clofazamine. The use of rifampicin alone or with dapsone led to the emergence of rifampicin-resistant Mycobacterium leprae strains. The emergence of drug-resistant leprosy put a hurdle in the leprosy eradication programme. The present study aims to predict the molecular model of ribonucleotide reductase (RNR), the enzyme responsible for biosynthesis of nucleotides, to screen new drugs for treatment of drug-resistant leprosy...
February 15, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29454901/methylene-blue-internalization-and-photodynamic-action-against-clinical-and-atcc-pseudomonas-aeruginosa-and-staphyloccocus-aureus-strains
#13
André Henrique Correia Pereira, Juliana Guerra Pinto, Mirian Aparecida Alves Freitas, Letícia Corrêa Fontana, Cristina Pacheco Soares, Juliana Ferreira-Strixino
Bacterial infections have been a major challenge to health studies, facing the increasingly resistance to antimicrobial agents, which according to World Health Organization, could be the major death cause until 2050. Photodynamic therapy emerges as an alternative in microbial inactivation, due to its selectivity and to decreasing or dismissing the antibiotic use. This study aimed at evaluating, in vitro, the internalization of the Methylene Blue and its photodynamic activity against a clinical and ATCC strain of Pseudomonas aeruginosa and Staphyloccocus aureus...
February 15, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29454824/candida-albicans-biology-molecular-characterization-pathogenicity-and-advances-in-diagnosis-and-control-an-update
#14
REVIEW
Maryam Dadar, Ruchi Tiwari, Kumaragurubaran Karthik, Sandip Chakraborty, Youcef Shahali, Kuldeep Dhama
Candida albicans is an emerging multidrug-resistant fungal pathogen representing an important source of invasive disease in humans and generating high healthcare costs worldwide. This fungus is frequently found in different anatomical sites of healthy persons and could induce systemic and superficial infections under optimal environmental conditions. Invasive candidiasis (IC) is an important nosocomial infection with high morbidity and mortality rates in hospitalized children. It represents a major source of prolonged infections in intensive care unit (ICU), particularly in immunosuppressed or elderly patients...
February 15, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29454794/hcv-genotype-6a-escape-from-and-resistance-to-velpatasvir-pibrentasvir-and-sofosbuvir-in-robust-infectious-cell-culture-models
#15
Long V Pham, Santseharay Ramirez, Judith M Gottwein, Ulrik Fahnøe, Yi-Ping Li, Jannie Pedersen, Jens Bukh
BACKGROUND & AIMS: Chronic liver diseases caused by hepatitis C virus (HCV) genotype 6 are prevalent in Asia, and millions of people require treatment with direct-acting antiviral regimens, such as NS5A inhibitor velpatasvir combined with the NS5B polymerase inhibitor sofosbuvir. We developed infectious cell culture models of HCV genotype 6a infection to study the effects of these inhibitors and the development of resistance. METHODS: The consensus sequences of prototype strains HK2 (MG717925) and HK6a (MG717928), originating from serum of patients with chronic HCV infection, were determined by Sanger sequencing of genomes amplified by reverse transcription-PCR...
February 15, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29454707/crystal-structure-of-the-capsid-protein-from-zika-virus
#16
Zifang Shang, Hao Song, Yi Shi, Jianxun Qi, George F Gao
Recently, Zika virus (ZIKV) emerged as a global public health concern, and is distinct from other flaviviruses in many aspects, e.g., causing transplacental infection, fetal abnormalities and vector-independent transmission through body fluids in humans. The capsid (C) protein is a multifunctional protein, since it binds to viral RNA in the process of nucleocapsid assembly and plays important roles in virus infection processes by interacting with cellular proteins, modulating cellular metabolism, apoptosis and immune response...
February 15, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29454509/group-c-strep-mediastinitis-a-case-report
#17
Joseph G Kotora, Eric J Schmieler, Christian S McEvoy, Stephen L Noble
This case is significant to the practice of emergency medicine because it represents the development of an uncommon and potentially fatal mediastinal infection from a commonly encountered and appropriately treated community respiratory pathogen. Most published reports on mediastinitis are those that are status-post cardiothoracic surgery. In our report, we discuss a case of a healthy, young individual who developed this morbid entity from extension of a simple respiratory infection where Group C Streptococcus has been isolated as the causative organism, which to our knowledge has not been previously reported...
February 3, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29454370/isolation-of-a-novel-rhabdovirus-from-an-insectivorous-bat-pipistrellus-kuhlii-in-italy
#18
Davide Lelli, Alice Prosperi, Ana Moreno, Chiara Chiapponi, Anna Maria Gibellini, Paola De Benedictis, Stefania Leopardi, Enrica Sozzi, Antonio Lavazza
BACKGROUND: Rhabdoviridae is one of the most ecologically diverse families of RNA viruses which can infect a wide range of vertebrates and invertebrates. Bats, among mammals, are pointed to harbor a significantly higher proportion of unknown or emerging viruses with zoonotic potential. Herein, we report the isolation of a novel rhabdovirus, detected in the framework of a virological survey on bats implemented in North Italy. METHODS: Virus isolation and identification were performed on samples of 635 bats by using cell cultures, negative staining electron microscopy and PCRs for different viruses...
February 17, 2018: Virology Journal
https://www.readbyqxmd.com/read/29453950/towards-elimination-of-schistosomiasis-after-5000-years-of-endemicity-in-egypt
#19
REVIEW
Iman F Abou-El-Naga
Schistosomiasis is a snail-transmitted infectious disease caused by a long lasting infection with a blood fluke of the genus Schistosoma. S. haematobium and S. mansoni are the species endemic in Egypt. The country has been plagued and seriously suffered from schistosomiasis over the past 5000 years. Great strides had been done in controlling the disease since 1922. The history, epidemiology and the different control approaches were reviewed. Currently, Egypt is preparing towards schistosomiasis elimination by 2020...
February 14, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29453941/increased-morbidity-and-mortality-associated-with-falls-among-patients-with-cirrhosis
#20
Ghideon Ezaz, Susan L Murphy, Jessica Mellinger, Elliot B Tapper
BACKGROUND: Injuries are more morbid and complicated to manage in patients with cirrhosis. However, data are limited regarding the relative risk of injury and severity of injury from falls in patients with cirrhosis compared to those without cirrhosis. METHODS: We examined the nationally representative National Emergency Department Sample, an all-payer database including all patients presenting with falls 2009-2012. We determined the relative risks for and clinical associations with severe injuries...
February 14, 2018: American Journal of Medicine
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