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 collec...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.展开更多
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 ...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 diseases.According to the results of several studies,gut dysbiosis is linked to viral hepatitis,mainly hepatitis C virus and hepatitis B virus infection.Gut bacteriaderived metabolites and cellular components are key molecules that affect liver function and modulate the pathology of viral hepatitis.Recent 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 effects.Therefore,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 approach.Concrete mechanisms behind the pathogenic role of gut-derived components on the pathogenesis of viral hepatitis remain unclear and not understood.In 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 versa.Moreover,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.展开更多
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...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 2021.Results:Among the 4546 records,69 studies met the inclusion criteria.The 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%),respectively.Among NACs,Candida(C.)parapsilosis was the most frequently isolated organism followed by C.tropicalis and C.glabrata.In 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.展开更多
基金supported by Infectious and Tropical Disease Research Center,Tabriz University of Medical Sciences,Tabriz,Iran(Grant No.94/2-5/17)
文摘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.
基金Supported by The Italian Ministry of University and Research(MIUR),the Foundation‘Ente Cassa di Risparmio di Firenze’,No.FCR 2017.
文摘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 diseases.According to the results of several studies,gut dysbiosis is linked to viral hepatitis,mainly hepatitis C virus and hepatitis B virus infection.Gut bacteriaderived metabolites and cellular components are key molecules that affect liver function and modulate the pathology of viral hepatitis.Recent 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 effects.Therefore,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 approach.Concrete mechanisms behind the pathogenic role of gut-derived components on the pathogenesis of viral hepatitis remain unclear and not understood.In 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 versa.Moreover,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.
文摘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 2021.Results:Among the 4546 records,69 studies met the inclusion criteria.The 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%),respectively.Among NACs,Candida(C.)parapsilosis was the most frequently isolated organism followed by C.tropicalis and C.glabrata.In 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.
