Browsing by Author "Ostan I."

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    Evaluation of malaria cases in Manisa from 2002 to 2004; [Manisa ilinde 2002-2004 yillari arasinda saptanan sitma olgularinin deǧerlendirilmesi.]
    (2006) Ostan I.; Limoncu M.E.; Tüysüz M.A.; Köroǧlu G.; Ozbilgin A.
    The province of Manisa is a relatively well developed agricultural and industrial center in western Turkey. There is a regular and extensive influx of workers from malaria-endemic regions of Anatolia to the province of Manisa during certain periods of the year, leading to contact between the local people and incoming workers. Major seasonal elevations can be detected in the prevalence of malaria in the province of Manisa and therefore an active fight against malaria is still carried out. In the present study, malaria cases detected and reported by the Malaria Control Dispensary of the Manisa City Health Centre during the last 3 years in Manisa have been evaluated. Comparison of present and prior data of malaria prevalence in Manisa has shown a remarkable decrease in recent years. A total of 14, 5 and 5 cases were reported in 2002, 2003 and 2004, respectively. Classification of the cases according to their origin (local or immigrant), age and the time diagnosis was also presented.
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    Investigation of the prevalence of amoebiasis in Izmir province and determination of Entamoeba spp. using PCR and enzyme immunoassay
    (2008) Kurt O.; Demirel M.; Ostan I.; Sevil N.R.; Mandiracioglu A.; Tanyuksel M.; Ak M.; Dagci H.
    Amoebiasis is a common and life-threatening disease. The discrimination of the pathogenic Entamoeba histolytica from the non-pathogenic Entamoeba dispar could be done by advanced methods such as enzyme immunoassay (EIA) and PCR. The aim of this study was to investigate the prevalence of amoebiasis in Izmir province, and differentiate the Entamoeba species by PCR and EIA. Stool samples of 2,047 individuals were examined by direct microscopy, formalin ethyl acetate concentration, trichrome staining and culture, and those found to be positive for E. histolytica/dispar by any of these methods were further analyzed by PCR and EIA for species identification. Fifty-nine of 2,047 (2.9%) stool samples were found to be positive for E. histolytica/dispar with microscopy and/or culture. Among these positive samples, E. histolytica was detected in 14 (23.7%) and 5 (8.5%) samples with PCR and antigen-specific ELISA (EIA), respectively. E. dispar was diagnosed in 31 (52.5%) and 52 (88.1%) of 59 samples with species-specific PCR and EIA, respectively. Risk factors related to infection with Entamoeba spp. and other intestinal parasites included living in shanty houses (p<0.01), a history of recent immigration to Izmir (p<0.01), having no social security (p<0.05) and living with a crowded family (p<0.01). The results demonstrated the significance of amoebiasis as a public health problem among people with low socio-economic status in Izmir province.
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    Assessment of in vivo antimalarial activities of some selected medicinal plants from Turkey
    (2014) Ozbilgin A.; Durmuskahya C.; Kayalar H.; Ostan I.
    Resistant infections lead to increased necessity of searching novel drugs and drug combinations. The purpose of this paper was to investigate antimalarial properties of some selected medicinal plants that have been traditionally used in Turkey for antipyretic and analgesic purposes. Lavandula stoecheas subsp. cariensis, Phlomis nissolii, Phlomis bourgaei, Phlomis leucophracta, Centaurea hierapolitana, Centaurea polyclada, Centaurea lydia, Scrophularia cryptophila, Scrophularia depauperata, Scrophularia floribunda, Rubia davisiana, and Alkanna tinctoria subsp. subleiocarpa were investigated for their in vivo antimalarial activities in mice infected with Plasmodium yoelii. Two hundred fifty to 500 mg/kg doses of plant extracts were given to mice as a single daily dose for 4 days. P. nissolii water extract, C. lydia chloroform extract, S. cryptophila ethanol extract, and C. polyclada methanol extract showed antimalarial activity with reducing parasitaemia. The chemotherapeutic effects of plant extracts ranged between 13.5 % and 66.91 %. The chemosuppressions exerted by combined plant extracts of P. nissolii, S. cryptophila, and C. lydia with C. polyclada methanol extract were detected as 51.25 %, 57.33 %, and 58.33 %, respectively. Investigation of cytotoxic activities against brine shrimps revealed that methanol extract of C. polycada, chloroform extract of C. lydia, and ethanol extract of S. cryptophila showed cytotoxic activities, while water extract of P. nissolii was not active against brine shrimps. © 2013 Springer-Verlag Berlin Heidelberg.