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Infections review

G Kamkamidze, M Butsashvili, K Gendzekhadze
Hepatitis C virus (HCV) infection remains one of the most important blood-borne diseases worldwide with about 130-170 million people chronically infected with hepatitis C virus, and more than 350 000 people die from hepatitis C-related liver diseases each year. Infection with HCV becomes chronic in approximately 80% of cases, while in up to 20% of cases hepatitis C virus is cleared from the human organism. Chronic infections of hepatitis C often leads to the end-stage liver diseases such as cirrhosis and hepatocellular carcinoma...
September 2016: Georgian Medical News
T Akhvlediani, N Akhvlediani, T Kuchuloria
Health care associated infections are the most frequent adverse event accompanying healthcare delivery worldwide. Of these, respiratory tract infections, including ventilator-associated pneumonia (VAP), have been recognized as the most common infections in acute hospitals. Sparse anecdotal and epidemiologic data from intensive care units (ICU) and infectious diseases physicians, as well as several publications in this field, suggest that the etiology of VAP in Georgia is most likely Klebsiella pneumoniae. This review article discusses the challenges of infection control in the Georgian health care system, with a focus on VAP...
September 2016: Georgian Medical News
E Vashakidze, I Mikadze, E Pachkoria
Hepatitis C virus is responsible for the majority of persistent viral infections of the liver, chronic hepatitis, liver cirrhosis and/ or hepatocellular carcinoma. Two strategies are important to curtailing the rising prevalence of disease: efficient diagnosis of acute hepatitis and identification of the likely mode of transmission. The aim of this study was to identify the clinical and epidemiological hallmarks of acute hepatitis C. During 2013-2015, 31 patients were hospitalized with a diagnosis of acute C hepatitis...
September 2016: Georgian Medical News
Emeli Torsson, Tebogo Kgotlele, Mikael Berg, Niwael Mtui-Malamsha, Emanuel S Swai, Jonas Johansson Wensman, Gerald Misinzo
Peste des petits ruminants virus (PPRV) causes the acute, highly contagious disease peste des petits ruminants (PPR) that affects small domestic and wild ruminants. PPR is of importance in the small livestock-keeping industry in Tanzania, especially in rural areas as it is an important source of livelihood. Morbidity and case fatality rate can be as high as 80-100% in naïve herds; however, in endemic areas, morbidity and case fatality range between 10 and 100% where previous immunity, age, and species of infected animal determine severity of outcome...
2016: Infection Ecology & Epidemiology
Junsik Park, Minsuk Kwon, Eui-Cheol Shin
During immune responses antigen-specific T cells are regulated by several mechanisms, including through inhibitory receptors and regulatory T cells, to avoid excessive or persistent immune responses. These regulatory mechanisms, which are called 'immune checkpoints', suppress T cell responses, particularly in patients with chronic viral infections and cancer where viral antigens or tumor antigens persist for a long time and contribute to T cell exhaustion. Among these regulatory mechanisms, cytotoxic T lymphocyte associated protein-4 (CTLA-4) and programmed cell death 1 (PD-1) are the most well-known receptors and both have been targeted for drug development...
October 21, 2016: Archives of Pharmacal Research
Kenneth Eng Ling Kwan, Vishalkumar G Shelat, Cher Heng Tan
Recurrent pyogenic cholangitis (RPC) is an infective process involving the biliary tree typified by pigmented intraductal calculi with dilatation of the intra- and extrahepatic biliary tree. Previously endemic to South-east Asia, RPC can now be seen in Western countries with the increasing access to international travel and immigration. Affected patients are often plagued by recurrent bouts of cholangitis, and commonly suffer from complications such as abscess formation and biliary strictures. In severe cases, cirrhosis with portal hypertension may develop...
October 21, 2016: Abdominal Radiology
Marcelo Arantes Levenhagen, Hélio Conte, Julia Maria Costa-Cruz
Strongyloides stercoralis is a helminth parasite that can infect millions of people worldwide, particularly in tropical, subtropical and temperate regions with poor sanitation. Several aspects of epidemiology, biology and host-parasite interactions of S. stercoralis have been studied, and substantial knowledge has been acquired; however, very few studies on immunotherapeutic control strategies to prevent infection and disease in humans have been conducted. Therefore, this article reviews the current progress and targets toward vaccine and passive immunization approaches for Strongyloides spp...
October 18, 2016: Immunology Letters
Ricardo Ferrer, Rafael Zaragoza, Alejandro H Rodríguez, Emilio Maseda, Pedro Llinares, Santiago Grau, Francisco Álvarez-Lerma, Guillermo Quindós, Miguel Salavert, Rafael Huarte
BACKGROUND: Although the management of invasive fungal infection (IFI) has improved, a number of controversies persist regarding the approach to invasive fungal infection in non-neutropenic medical ward patients. AIMS: To identify the essential clinical knowledge to elaborate a set of recommendations with a high level of consensus necessary for the management of IFI in non-neutropenic medical ward patients. METHODS: A prospective, Spanish questionnaire, which measures consensus through the Delphi technique, was anonymously answered and e-mailed by 30 multidisciplinary national experts, all specialists (intensivists, anesthesiologists, microbiologists, pharmacologists and specialists in infectious diseases) in IFI and belonging to six scientific national societies...
October 18, 2016: Revista Iberoamericana de Micología
Shawn I Walsh, Arryn Craney, Floyd E Romesberg
The looming antibiotic crisis has prompted the development of new strategies towards fighting infection. Traditional antibiotics target bacterial processes essential for viability, whereas proposed antivirulence approaches rely on the inhibition of factors that are required only for the initiation and propagation of infection within a host. Although antivirulence compounds have yet to prove their efficacy in the clinic, bacterial signal peptidase I (SPase) represents an attractive target in that SPase inhibitors exhibit broad-spectrum antibiotic activity, but even at sub-MIC doses also impair the secretion of essential virulence factors...
September 21, 2016: Bioorganic & Medicinal Chemistry
A Aguirre-Quiñonero, L Martínez-Martínez
Infections caused by carbapenemase-producing bacteria are becoming a major clinical and public health concern. Detection of carbapenemase producing strains is often challenging, since susceptibility to carbapenems may vary significantly among carbapenemase producers. Some carbapenemases have shown to exhibit weak activity against carbapenems leading to minimum inhibitory concentrations of carbapenems below the breakpoint for defining clinical resistance and even below the proposed screening breakpoint. Thus, reliable and rapid detection of carbapenemase-activity is needed for an appropriate patient management and a rapid implementation of infection prevention and control measures...
October 18, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
Carsten Deppermann, Paul Kubes
The primary function of platelets is to patrol the vasculature and seal vessel breaches to limit blood loss. However, it is becoming increasingly clear that they also contribute to pathophysiological conditions like thrombosis, atherosclerosis, stroke and infection. Severe sepsis is a devastating disease that claims hundreds of thousands of lives every year in North America and is a major burden to the public health system. Platelet surface receptors like GPIb, αIIbβ3, TLR2 and TLR4 are involved in direct platelet-bacteria interactions...
October 18, 2016: Seminars in Immunology
A Kanashiro, J M Gaya, J Palou, L Gausa, H Villavicencio
OBJECTIVES: To review our experience in robot-assisted radical cystectomy, assessing the complications and oncological and functional results. MATERIALS AND METHODS: From 2007 to 2014, we performed 67 robot-assisted radical cystectomies combined with lymphadenectomy in 61 cases. The operations were performed on 37 patients due to muscle-invasive tumours and on 30 due to high-risk nonmuscle-invasive tumours. Urinary diversion was conducted extracorporeally, using a Studer neobladder in 47 cases...
October 18, 2016: Actas Urologicas Españolas
Anthony L Cunningham, Nathalie Garçon, Oberdan Leo, Leonard R Friedland, Richard Strugnell, Béatrice Laupèze, Mark Doherty, Peter Stern
In the 21st century, an array of microbiological and molecular allow antigens for new vaccines to be specifically identified, designed, produced and delivered with the aim of optimising the induction of a protective immune response against a well-defined immunogen. New knowledge about the functioning of the immune system and host pathogen interactions has stimulated the rational design of vaccines. The design toolbox includes vaccines made from whole pathogens, protein subunits, polysaccharides, pathogen-like particles, use of viral/bacterial vectors, plus adjuvants and conjugation technology to increase and broaden the immune response...
October 18, 2016: Vaccine
George Kokosis, Zhifei Sun, Yash J Avashia, Mohamed A Adam, Howard Levinson, Detlev Erdmann, Christopher R Mantyh, John Migaly
BACKGROUND: The aim of this study was to compare wound complications from V-Y flap vs primary closure in the setting of abdominoperineal resection. METHODS: This was a single institution retrospective review (1999-2014). The main outcome measures were any wound complication, hospital length of stay, and unplanned readmissions. RESULTS: Among 80 patients included, 21 (26%) received reconstruction with V-Y flap. Compared with those who received primary closure, patients who underwent V-Y flap reconstruction had lower rates of overall wound complications (14...
July 21, 2016: American Journal of Surgery
Zahra Afghah, Brett Webb, Xiang-Jin Meng, Sheela Ramamoorthy
More than two decades after its emergence, porcine circovirus type 2 (PCV2) remains an economically important swine pathogen. Commercial vaccines which were first introduced to the U.S in 2006, have been highly effective in reducing clinical signs and improving production. Recent studies have indicated a declining level of PCV2 prevalence and viremia in the field. However, reports on the emergence of new viral variants have also continued to increase. This article reviews topics of current interest in the field of PCV2 vaccines; including the comparative efficacy of the available commercial products, efficacy of current vaccines against new and emerging strains, findings on the differences between immunity in natural infection versus vaccination, limitations of current experimental models for PCV2 vaccine studies, and new developments in novel experimental vaccines...
October 13, 2016: Veterinary Microbiology
Tan A Nguyen, Ken C Pang, Seth L Masters
An effective innate immune response relies on the detection of pathogen associated molecular patterns (PAMPs) by various host pattern recognition receptors (PRRs) that result in the production of pro-inflammatory cytokines and chemokines. Viruses and bacteria have co-evolved with the immune system and developed multiple strategies to usurp or circumvent host machinery and blunt the innate immune response in infected cells. Recently, it has become apparent that infected or dying cells can transmit PAMPs and host PRR signalling proteins to uninfected bystander cells to thereby bypass pathogen evasion strategies, and potentiate innate immune signalling...
October 18, 2016: Molecular Immunology
Kathryn Schnippel, Rebecca H Berhanu, Andrew Black, Cynthia Firnhaber, Norah Maitisa, Denise Evans, Edina Sinanovic
BACKGROUND: According to the World Health Organization, South Africa ranks as one of the highest burden of TB, TB/HIV co-infection, and drug-resistant TB (DR-TB) countries. DR-TB treatment is complicated to administer and relies on the use of multiple toxic drugs, with potential for severe adverse drug reactions. We report the occurrence of adverse events (AEs) during a standardised DR-TB treatment regimen at two outpatient, decentralized, public-sector sites in Johannesburg, South Africa...
October 21, 2016: BMC Infectious Diseases
M J Tao, W Al-Jundi, G Roche-Nagle
INTRODUCTION: Popliteal artery aneurysms (PAA) are the most prevalent form of peripheral arterial aneurysms. Greater saphenous vein grafts and endoaneurysmorrhaphy remains the mainstay therapy for open repair of PAA. True aneurysmal degeneration of lower extremity infrainguinal autologous vein grafts are relatively rare and its etiology is not completely understood. CASE PRESENTATION: We present a case of a 57-year-old man with recurrent autologous venous graft aneurysmal dilatations following a surgical popliteal artery aneurysm repair...
October 8, 2016: International Journal of Surgery Case Reports
Hamidreza Majidiani, Sahar Dalvand, Ahmad Daryani, Ma de la Luz Galvan-Ramirez, Masoud Foroutan-Rad
INTRODUCTION: The global protozoan parasite, Toxoplasma gondii, infects many warm-blooded animals and humans by employing different transmission routes. There have been some recent studies on the probable relevance of infectious agents and diabetes. Therefore, we conducted a systematic review and meta-analysis to identify the possible association between chronic toxoplasmosis and diabetes mellitus. METHODS: This study was conducted following the general methodology recommended for systematic reviews and meta-analysis...
October 18, 2016: Brazilian Journal of Infectious Diseases
Daniel Lordelo San Martin, Dislene Nascimento Dos Santos, Abrahão Fontes Baptista
OBJECTIVE: To describe the pain in patients infected with human T-cell lymphotropic virus type 1, clinically and epidemiologically. METHODS: This systematic review was based on The PRISMA Statement. Four reviewers searched PUBMED, SciELO, LILACS and BIREME for data from observational studies and clinical trials (n≥30) regarding pain prevalence, characteristics, and associated factors in patients with human T-cell lymphotropic virus type 1. No limits on publication date or language were established...
October 18, 2016: Brazilian Journal of Infectious Diseases
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