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Non-albicans candidemia in cancer patients as an increasing health problem:A comprehensive review and meta-analysis

Asian Pacific Journal of Tropical Medicine 2022年第9期15卷 387-399页

作者： Aynaz Ghojoghi Maryam Erfaninejad Ehsan Ahmadpour Eisa Nazar aleksandra barac Mahnaz Fatahinia Department of Medical Mycology School of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran Infectious and Tropical Diseases Research Center Tabriz University of Medical SciencesTabrizIran Department of Biostatistics School of HealthMashhad University of Medical SciencesMashhadIran Clinic for Infectious and Tropical Diseases Clinical Centre of SerbiaBelgradeSerbia

Objective:To evaluate the prevalence of Candida species in cancer patients with candidemia around the world,and to identify related risk factors and their antifungal resistance,with an emphasis on non-albicans Candida species(NACs).Methods:The published papers related to the subject were systematically searched in databases of MEDLINE(including PubMed),Web of Science,Scopus,Science Direct,and Google Scholar between the 1st January 2000 and 21st April ***:Among the 4546 records,69 studies met the inclusion *** pooled prevalence of NACs in cancer patients with candidemia was 62%(95%CI 58%-67%;I2=94.85%,P=0.00).Based on type of cancer,the pooled prevalence of NACs in hematologic and solid cancer patients were 68%(95%CI 65%-70%)and 52%(95%CI 49%-54%),*** NACs,Candida(C.)parapsilosis was the most frequently isolated organism followed by *** and *** addition,the therapeutic usage of antibiotics was found as the most common risk factor,accounting for 85%(95%CI 81%-89%)and central venous catheter accounting for 69%(95%CI 62%-77%).Conclusions:The incidence of Candida bloodstream infections among cancer patients is a growing concern,especially when the etiologic agents of candidemia tend to shift towards NACs.

关键词： Candidemia Non-albicans Candida Cancer Epidemiology Systematic review Meta-analysis

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Microbiota and viral hepatitis:State of the art of a complex matter

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World Journal of Gastroenterology 2021年第33期27卷 5488-5501页

作者： Ivana Milosevic Edda Russo Ankica Vujovic aleksandra barac Olja Stevanovic Stefano Gitto Amedeo Amedei Clinic for Infectious and Tropical Diseases Clinical Centre of Serbia Faculty of MedicineUniversity of BelgradeBelgrade 101801Serbia Department of Experimental and Clinical Medicine University of FlorenceFirenze 50100Italy

Changes in gut microbiota influence both the gut and liver,which are strictly connected by the so-called“gut-liver axis”.The gut microbiota acts as a major determinant of this relationship in the onset and clinical course of liver *** to the results of several studies,gut dysbiosis is linked to viral hepatitis,mainly hepatitis C virus and hepatitis B virus *** bacteriaderived metabolites and cellular components are key molecules that affect liver function and modulate the pathology of viral *** studies showed that the gut microbiota produces various molecules,such as peptidoglycans,lipopolysaccharides,DNA,lipoteichoic acid,indole-derivatives,bile acids,and trimethylamine,which are translocated to the liver and interact with liver immune cells causing pathological ***,the existence of crosstalk between the gut microbiota and the liver and its implications on host health and pathologic status are essential factors impacting the etiology and therapeutic *** mechanisms behind the pathogenic role of gut-derived components on the pathogenesis of viral hepatitis remain unclear and not *** this review,we discuss the current findings of research on the bidirectional relationship of the components of gut microbiota and the progression of liver diseases and viral hepatitis and vice ***,this paper highlights the current therapeutic and preventive strategies,such as fecal transplantation,used to restore the gut microbiota composition and so improve host health.

关键词： Gut microbiota Hepatitis B virus Hepatitis C virus Liver diseases,Fecal transplantation

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Diagnosis of Toxoplasma gondii infection in pregnant women using automated chemiluminescence and quantitative real time PCR

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Asian Pacific Journal of Tropical Medicine 2019年第1期12卷 26-31页

作者： Ehsan Ahmadpour Elmira Zargami Mahmoud Mahami-Oskouei Adel Spotin Abbas Shahbazi Hossein Samadi Kafil Saba Rajabi Paria Alizadeh Yagoob Azadi Reza Bahaj Firouz Shahrivar aleksandra barac Infectious and Tropical Disease Research Center Tabriz University of Medical Sciences Students Research Committee Tabriz University of Medical Sciences Department of Parasitology and Mycology Faculty of Medicine Tabriz University of Medical Sciences Drug Applied Research Center Tabriz University of Medical Sciences Clinic for Infectious and Tropical Diseases Clinical Centre of Serbia Faculty of Medicine University of Belgrade

Objective: To identify serodiagnosis and quantification of Toxoplasma gondii(T. gondii) infection among pregnant women in Salmas, northwest of Iran. Methods: In this crosssectional study, 276 blood samples were collected from pregnant women referred to the health care centers in Salmas city. The demographic variables were also recorded. Titers of antiToxoplasma IgM and IgG antibodies(Ab) were determined using the chemiluminescence immunoassay. Quantitative real-time PCR targeting the T. gondii repeated element gene was also performed on the blood sample. Results: Out of all, 19.92%(55/276) and 2.17%(6/276) patients were seropositive for anti-Toxoplasma IgG and IgM Ab, respectively. Moreover, the presence of T. gondii DNA was observed in 12.31%(34/276) blood samples. A significant relationship was observed between the IgG Ab seropositivity and contact with the cat as a risk factor(P=0.022). Conclusions: The seroprevalence rate of T. gondii infection in pregnant women is relatively low. Consequently, the seronegative pregnant women are at risk, and a considerable rate of positive blood samples for the presence of parasite's DNA should not be ignored. Besides, quantitative real-time PCR could be considered as an accurate method for diagnosis of acute toxoplasmosis especially when the precise results are of the most importance in pregnancy. Limiting contact with cats is also suggested for pregnant women.

关键词： Toxoplasmosis Toxoplasma gondii Chemiluminescence immunoassay Real time PCR Pregnancy

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