The Mesoamerican Ministers of Health have set 2020 as the target for malaria elimination to be achieved in the region. Imported malaria cases are a potential threat to countries attempting elimination or working to pr...The Mesoamerican Ministers of Health have set 2020 as the target for malaria elimination to be achieved in the region. Imported malaria cases are a potential threat to countries attempting elimination or working to prevent resurgence. We report the first imported Plasmodium ovale infection with molecular confirmation in Central America, which occurred in a Guatemalan soldier that had been deployed in Africa. The obstacles for its diagnosis using the standard microscopy technique and the need to improve its detection are discussed.展开更多
The research scenario for malaria has improved in the last three decades to understand the epidemiology and host immune responses to plasmodial infection.Due to the augmented episodes of resistance development against...The research scenario for malaria has improved in the last three decades to understand the epidemiology and host immune responses to plasmodial infection.Due to the augmented episodes of resistance development against the commonly used antimalarials in plasmodium parasites,especially in Plasmodium falciparum,neutralization of infection through effective vaccine(s) remains the feasible alternative in malaria control.In this direction,lot of attention was paid towards the identification of stage specific malaria antigens targeted by host ’s immune system.Preparation of synthetic or recombinant peptides and evaluation of their immunogenecity in naturally occurring antibody response were also given much importance,as these studies could help in finding potential candidates for future malaria vaccine(s).Attention was also paid.on the pathogenic consequences of antibody formation in malaria infection as polyclonal activation of B cells,which is a very prominent feature in malaria infection.Formation of circulating immune complexes in chronic malaria infection was also viewed as pathogenic parameter of severe malaria.The present survey focuses mainly on protective and pathogenic aspects of malaria antibodies(eliciting against various,stage specific antigens),and future research plan in antibodymediated immune response.展开更多
Background:In Nigeria,malaria is a leading cause of hospital admission and death.The country accounts for highest malaria cases and deaths globally.About 25% of all malaria cases and deaths in the world occurs in Nige...Background:In Nigeria,malaria is a leading cause of hospital admission and death.The country accounts for highest malaria cases and deaths globally.About 25% of all malaria cases and deaths in the world occurs in Nigeria.In 2010,malaria was reported to account for 60% of all outpatient visits and responsible for 30% of all hospital admission of children under the age of five years leaving in Nigeria.Objective:The goal of this research work was to investigate the possible role of the state of protein nutrition,kidney and liver functions of the under 5 years children with P.falciparum malaria;the assessment of these biochemical parameters as possible indicator of P.falciparum infection in the studied subjects and the effect of home-based oral chloroquine treatment in these children leaving in Jos metropolis.Method:Total of 93 children within the age range of 1 to 59 months and leaving in Jos North,Central Nigeria were recruited for this cross-sectional study.Malaria parasite identification was done using microscopic examination of Leishman-stained thick and thin blood films while the complete blood count was carried out using Beckman Coulter Analyzer.Results:The serum albumin concentration of(37.63±0.82 g/L)obtained in the malaria-free children was higher than concentration of(34.07±1.90 g/L)obtained in the chloroquine treated children with malaria,but not different from those obtained in the untreated uncomplicated malaria(37.35±1.19 g/L)and untreated severe malaria(37.43±1.02 g/L)groups.The Serum globulin concentration of 35.09±1.95 g/L,obtained in the untreated simple malaria group was higher than 30.18±1.30 g/L in the control group,34.57±2.59 g/L in the untreated severe malaria group and chloroquine treated malaria with 30.71±2.38 g/L,respectively.Conclusion:This study suggests that the biochemical parameters of serum creatinine,serum albumin,total protein,and globulin,serum alkaline phosphatase,serum alanine aminotransferase and serum aspartate aminotransferase are not sensitive indicators of P.falciparum infection in studied children with malaria.It also demonstrated that involvement of liver and kidney or impairment of their functions could be ruled out in the pathogenesis of malaria in this group of children.These results further shows that there was no significant effect of first-line treatment with oral chloroquine on the studied biochemical parameters in the study population.展开更多
目的应用巢式PCR扩增小亚单位核糖体核糖核酸(18S r RNA)基因确诊卵形疟原虫感染。方法采集2012-2013年山东省疟疾患者全血和滤纸血样,吉氏染色镜检观察血膜疟原虫形态并鉴定虫种。提取血样中DNA,根据疟原虫18S r RNA基因以属和种特异...目的应用巢式PCR扩增小亚单位核糖体核糖核酸(18S r RNA)基因确诊卵形疟原虫感染。方法采集2012-2013年山东省疟疾患者全血和滤纸血样,吉氏染色镜检观察血膜疟原虫形态并鉴定虫种。提取血样中DNA,根据疟原虫18S r RNA基因以属和种特异性引物进行巢式PCR扩增,筛查卵形疟阳性标本并进行测序验证。结果2012和2013年山东省共筛查到7例输入性卵形疟原虫感染病例。巢式PCR扩增7份血样均在800 bp处出现卵形疟原虫特异性单一条带,Blast比对表明产物序列与Gen Bank卵形疟参考序列一致。结论经巢式PCR方法确诊了2012和2013年山东省7例输入性卵形疟病例。展开更多
文摘The Mesoamerican Ministers of Health have set 2020 as the target for malaria elimination to be achieved in the region. Imported malaria cases are a potential threat to countries attempting elimination or working to prevent resurgence. We report the first imported Plasmodium ovale infection with molecular confirmation in Central America, which occurred in a Guatemalan soldier that had been deployed in Africa. The obstacles for its diagnosis using the standard microscopy technique and the need to improve its detection are discussed.
文摘The research scenario for malaria has improved in the last three decades to understand the epidemiology and host immune responses to plasmodial infection.Due to the augmented episodes of resistance development against the commonly used antimalarials in plasmodium parasites,especially in Plasmodium falciparum,neutralization of infection through effective vaccine(s) remains the feasible alternative in malaria control.In this direction,lot of attention was paid towards the identification of stage specific malaria antigens targeted by host ’s immune system.Preparation of synthetic or recombinant peptides and evaluation of their immunogenecity in naturally occurring antibody response were also given much importance,as these studies could help in finding potential candidates for future malaria vaccine(s).Attention was also paid.on the pathogenic consequences of antibody formation in malaria infection as polyclonal activation of B cells,which is a very prominent feature in malaria infection.Formation of circulating immune complexes in chronic malaria infection was also viewed as pathogenic parameter of severe malaria.The present survey focuses mainly on protective and pathogenic aspects of malaria antibodies(eliciting against various,stage specific antigens),and future research plan in antibodymediated immune response.
文摘Background:In Nigeria,malaria is a leading cause of hospital admission and death.The country accounts for highest malaria cases and deaths globally.About 25% of all malaria cases and deaths in the world occurs in Nigeria.In 2010,malaria was reported to account for 60% of all outpatient visits and responsible for 30% of all hospital admission of children under the age of five years leaving in Nigeria.Objective:The goal of this research work was to investigate the possible role of the state of protein nutrition,kidney and liver functions of the under 5 years children with P.falciparum malaria;the assessment of these biochemical parameters as possible indicator of P.falciparum infection in the studied subjects and the effect of home-based oral chloroquine treatment in these children leaving in Jos metropolis.Method:Total of 93 children within the age range of 1 to 59 months and leaving in Jos North,Central Nigeria were recruited for this cross-sectional study.Malaria parasite identification was done using microscopic examination of Leishman-stained thick and thin blood films while the complete blood count was carried out using Beckman Coulter Analyzer.Results:The serum albumin concentration of(37.63±0.82 g/L)obtained in the malaria-free children was higher than concentration of(34.07±1.90 g/L)obtained in the chloroquine treated children with malaria,but not different from those obtained in the untreated uncomplicated malaria(37.35±1.19 g/L)and untreated severe malaria(37.43±1.02 g/L)groups.The Serum globulin concentration of 35.09±1.95 g/L,obtained in the untreated simple malaria group was higher than 30.18±1.30 g/L in the control group,34.57±2.59 g/L in the untreated severe malaria group and chloroquine treated malaria with 30.71±2.38 g/L,respectively.Conclusion:This study suggests that the biochemical parameters of serum creatinine,serum albumin,total protein,and globulin,serum alkaline phosphatase,serum alanine aminotransferase and serum aspartate aminotransferase are not sensitive indicators of P.falciparum infection in studied children with malaria.It also demonstrated that involvement of liver and kidney or impairment of their functions could be ruled out in the pathogenesis of malaria in this group of children.These results further shows that there was no significant effect of first-line treatment with oral chloroquine on the studied biochemical parameters in the study population.
文摘目的应用巢式PCR扩增小亚单位核糖体核糖核酸(18S r RNA)基因确诊卵形疟原虫感染。方法采集2012-2013年山东省疟疾患者全血和滤纸血样,吉氏染色镜检观察血膜疟原虫形态并鉴定虫种。提取血样中DNA,根据疟原虫18S r RNA基因以属和种特异性引物进行巢式PCR扩增,筛查卵形疟阳性标本并进行测序验证。结果2012和2013年山东省共筛查到7例输入性卵形疟原虫感染病例。巢式PCR扩增7份血样均在800 bp处出现卵形疟原虫特异性单一条带,Blast比对表明产物序列与Gen Bank卵形疟参考序列一致。结论经巢式PCR方法确诊了2012和2013年山东省7例输入性卵形疟病例。
