Publications by authors named "Gureser A"

Article Synopsis
  • A study investigated Blastocystis and Dientamoeba fragilis prevalence in 92 diarrhea patients and 50 healthy individuals in Corum, Türkiye, revealing a 24.6% total prevalence of Blastocystis, more common in healthy subjects (30.0%).
  • The study identified common subtypes of Blastocystis, with ST3 being the most prevalent, particularly in individuals aged 40-59 years, while D. fragilis was found in 8.4% of participants without significant differences between the two groups.
  • Co-infection rates were high at 58.3%, more frequent in healthy individuals, and other pathogens like Entamoeba histolytica and Giardia
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Article Synopsis
  • The study aimed to investigate the prevalence of a specific gastrointestinal parasite in children with celiac disease (CeD) and functional abdominal pain (FAP), analyzing various demographic and socioeconomic factors.
  • A total of 161 fecal samples were collected and examined, revealing a 10.6% overall prevalence of the parasite, with no significant differences between groups (CeD, FAP, and healthy children).
  • The most common subtypes of the parasite detected were ST2 (42.8%) and ST3 (35.7%), with diagnostic methods showing strong agreement in identifying the parasite's presence.
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Background: The aim of this study is to investigate the antimicrobial activities of the species belonging to the genera Origanum L., Thymus L., and Thymbra L.

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Article Synopsis
  • The study examines the impact of splenectomy on the risk of infections, specifically looking at antibody levels after vaccination against Streptococcus pneumoniae.
  • It involved three phases: assessing patient awareness of vaccination risks, measuring total Ig values among splenectomy patients, and vaccinating participants while analyzing their antibody responses.
  • Results showed a significant lack of awareness about vaccination needs, with vaccinated patients having much higher antibody levels compared to unvaccinated, but no link was found between antibody levels and factors like age or gender.
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Objective: This study aimed to detect the presence of spp. in formalin-fixed paraffin-embedded (FFPG) samples of hydatid cyst cases and to discuss the DNA isolation problems in FFPG samples.

Methods: FFPG samples of 47 cases diagnosed with hydatid cyst were included in this study.

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Ticks were collected from 30 Greek tortoise (Testudo graeca), and 10 Arabian camels (dromedary) (Camelus dromedarius) in Israel. All those collected from Greek tortoises belonged to Hyalomma aegyptium, while all specimens collected from the camels belonged to Hyalomma dromedarii. Out of 84 specimens of H.

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Article Synopsis
  • The study investigates the prevalence of Blastocystis sp. and Dientamoeba fragilis in diarrheic patients in Turkey, particularly focusing on immunodeficient versus immunocompetent individuals.
  • A total of 438 stool samples were collected from patients, and both conventional and molecular methods, including qPCR and next generation sequencing, were used to detect these protists and identify Blastocystis subtypes.
  • The findings revealed that the prevalence of Blastocystis sp. was 16.7%, while D. fragilis was 11.9%, with immunocompetent patients showing higher prevalence rates and five different subtypes of Blastocystis sp. identified, primarily subtype ST3.
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Background: Toxic gliadin peptide damages enterocytes in celiac disease by causing oxidative stress. Thiols are organic compounds that defend against oxidative stress. This study aimed to investigate the changes in thiol-disulfide homeostasis in children with celiac disease.

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Babesia microti (Aconoidasida: Piroplasmida) (Franca, 1910) is an important tick-borne zoonotic parasite with rodents serving as reservoir hosts. In the present study, 536 rodents were captured from Burdur, Bartin, Giresun, and Yozgat provinces of Turkey between the years 2010 and 2012, and blood samples were examined for the presence of Babesia spp. using conventional PCR which targeted the 18S rRNA gene.

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Aims: Our aim was to investigate the skin-homing T-cell immune responses triggered in patients with Demodex infestation and/or rosacea.

Methods: Collected whole blood samples were divided into four groups: control subjects; nonrosacea patients with Demodex infestation (Demodex group); papulopustular rosacea (PPR) patients without Demodex infestation (Rosacea group); and PPR patients with Demodex infestation (Rosacea/Demodex group). Following ex vivo activation, skin-homing CLA+CD4+ T-cell subset levels were monitored by flow cytometry.

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Background: HCV virus infections are one of the major health problems in the world that can cause cirrhosis and liver cancer at a higher rate than other hepatitis data. The aim of this study was to determine the prevalence of mixed infections with different HCV genotypes in Turkey and also to evaluate the current HCV genotype and sub-type distributions by a multicentered assessment.

Methods: The HCV genotype data of 17,578 hepatitis C patients collected from 23 centers from different geographic regions covering all Turkey were collected.

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Background: Tick-borne diseases are increasing all over the word, including Turkey. The aim of this study was to determine the bacterial and protozoan vector-borne pathogens in ticks infesting humans in the Corum province of Turkey.

Methodology/principal Findings: From March to November 2014 a total of 322 ticks were collected from patients who attended the local hospitals with tick bites.

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Crimean-Congo hemorrhagic fever (CCHF) is a severe human infection caused by CCHF virus (CCHFV). Today, although the literature on CCHF pathogenesis is still limited, it is thought to be associated with immunosuppression in the early phase of infection followed by pro-inflammatory immune response that may lead to fatal outcomes. The aim of this study is to investigate the role of regulatory T-cells (T cells) in the pathogenesis of CCHFV.

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Aim: Splenectomised patients are associated with lifelong risk of fatal overwhelming post-splenectomy infection (OPSI), which is mostly caused by Streptococcus pneumoniae. Today OPSI cases can still be reported even in patients with appropriate vaccination. In our study, the levels of vaccine-specific memory B- and T cells were compared between control and splenectomised patients to enlighten the underlying reason.

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Polymerase chain reaction (PCR) is an effective technique for diagnosis of Blastocystis infection. Notably, DNA isolation procedure is extremely critical for the PCR step. In the present study, a recently described extraction procedure, named as the "sand method" was modified and adapted for isolation of Blastocystis DNA.

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Purpose: Splenectomy is associated with increased risk of overwhelming post-splenectomy infections despite proper anti-pneumococcal vaccination. As most studies concentrated on vaccination-induced humoral immunity, the cellular immune responses triggered in splenectomized patients are not yet well studied. The present study aims to investigate this area as it can contribute to the development of more effective vaccination strategies.

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Article Synopsis
  • A study in North Cyprus examined the prevalence of a specific intestinal parasite and its subtypes by collecting stool samples from 230 volunteers alongside demographic and health questionnaires.
  • The results showed parasite infection rates of 10.5% via microscopy and 27.8% through PCR testing, with no significant associations found with demographic factors or gastrointestinal symptoms.
  • The research indicates that this parasite might be a normal part of human intestinal flora, marking the first investigation into its epidemiology in North Cyprus.
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PCR and DNA sequencing are currently the diagnostic methods of choice for detection of Blastocystis spp. and their suptypes. Fresh or frozen stool samples have disadvantages in terms of several aspects such as transportation, storage, and existence of PCR inhibitors.

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Background/aims: The aim of this study was to determine the prevalence and significance of intestinal protozoa, specially Blastocystis spp., and to perform PCR-based subtype classification for understanding the importance of Blastocystis spp. in the pathogenesis of gastrointestinal disorders in post-traumatic splenectomized patients.

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Cystic echinococcosis (CE) is a zoonosis caused by Echinococcus granulosus. It is difficult to diagnose CE by clinical symptoms alone, therefore, radiological and serological examinations should be conducted as well. The aims of this retrospective study were to evaluate the biochemical, hemogram, serological and radiological findings of patients prediagnosed as CE, and to survey epidemiological data to detect the status of the disease in our region.

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