Browsing by Author "Oğuz, B."

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Current Status of Zoonotic Pathogen Anaplasma Phagocytophilum in Türkiye: a Molecular Approach
(Aras Part Medical International Press, 2021) Oğuz, B.; Değer, M.S.
Cytochrome Oxidase I Gene Sequences That Cause Hypodermosis Cattle Species by PCR-RFLP Technique Investigation
(2013) Oğuz, B.
First Investigation on Vectorial Potential of Blattella Germanica in Turkey
(Chartered Inst. of Building Services Engineers, 2017) Oğuz, B.; Özdal, N.; Orunç Kilinç, Ö.; Değer, M.S.
Cockroaches are claimed to be mechanical vectors of microorganisms such as intestinal parasites, bacteria, fungi, and viruses. This study was conducted to determine the potential role of cockroaches as carriers of parasites having medical importance in Van province, Turkey. One hundred and thirty-eight cockroaches were collected from different parts of apartments and houses between March and April 2014. All of the collected cockroaches were identified as Blatella germanica. They were examined for isolation and identification of intestinal parasites from external surface. The results showed that 66 (48%) of the cockroaches harbored parasitic organisms. Of these, 96.6% were protozoon and the remaining 3.4% were helminthes. Isolated helminth, species were Toxocara sp. (3%), Ascaris lumbricoides (3%), Trichostrongylus sp. (1.5%), Trichuris trichiura (1.5%) and unidentified nematode egg samples (3%). The protozoon identified during the study were Endolimax nana (7.6%), Blastocystis hominis (41%), Entamoeba histolytica/E. dispar (16.7%), unsporulated coccidial oocyst (7.6%), Chilomastix mesnilli (4.5%), Entamoeba coli (35%), Giardia sp. (13.6%) and Iodamoeba butschlii (7.6%). In conclusion, Blattella germanica was found to harbor intestinal parasites of public health importance. Hence, awareness on the potential role of cockroaches in the mechanical transmission of intestinal parasites needs to be further investigated. Control of cockroaches will substantially minimize the spread of diseases caused by helminths and protozoons in our environment. © 2017, Chartered Inst. of Building Services Engineers. All rights reserved.
Prevalence of Elisa-Detected Specific Antibodies Against Besnoitia Besnoiti in Cattle of the Eastern and Southeastern Anatolian Regions, Turkey
(Shiraz University, 2019) Özdal, N.; Oğuz, B.; Orunç Kılınç, Ö.; Karakuş, A.; Değer, S.
Background: Besnoitiosis caused by Besnoitia besnoiti is regarded as a re-emerging disease in cattle because of the increased number of cases and geographical distribution in many European countries. Aims: The present study was conducted to determine the presence of B. besnoiti in cattle in the Eastern and Southeastern Anatolia of Turkey. Methods: Blood samples were collected from 450 cattle in the provinces of Mus, Van, Siirt, and Diyarbakir. PrioCHECK®Besnoitia Ab 2.0 enzyme-linked immunosorbent assay (ELISA) kit was used to detect specific anti-B. besnoiti antibodies in the serum samples. Results: Twelve (2.7%) of the 450 asymptomatic cattle were seropositive against B. besnoiti. In cattle, the prevalence rates were 0%, 3.7%, 3.4%, and 1.1% in Mus, Siirt, Diyarbakir, and Van provinces (P>0.05), respectively. This study is the first to investigate the presence of B. besnoiti in cattle raised in the Eastern and Southeastern Anatolia of Turkey. Conclusion: Although the ELISA test revealed some positive cases, concrete evidence for the establishment of clinical B. besnoiti infection could not be verified. More comprehensive analysis would be necessary to determine the significance of the present observations. © 2019 Shiraz University. All rights reserved.
Striking Tick-Borne Virus Diversity and Potential Reservoirs Documented During One-Health Cross-Sectional Screening in Anatolia
(BioMed Central Ltd, 2025) Dinçer, E.; Timurkan, M.Ö.; Oğuz, B.; Özan, E.; Coskun, N.; Kiziltepe, Ş.; Polat-Dincer, P.F.P.
Background: An expansion of recently described human pathogenic tick-borne viruses from Central Asia toward Europe has been documented. Located on important bird migration routes, Anatolia is an intercontinental crossing hub with various climactic zones and with an abundance of endemic tick species. We sought to investigate tick-borne viruses utilizing a One Health approach encompassing host-removed ticks and host samples. Methods: We collected host-attached ticks and accompanying plasma in 2023–2024 at locations in 20 provinces representing the 7 distinct geographical regions in Anatolia. The hosts comprised cattle, sheep, dogs, goats, and tortoises. The ticks were morphologically identified, processed in pools, and these pools, along with plasma from cattle, sheep and goats, were subjected to nucleic acid purification and complementary DNA synthesis. Viruses were screened by generic (nairovirus) and specific (Jingmen tick virus, JMTV; Tacheng tick virus 1, TcTV-1; Tacheng tick virus 2, TcTV-2; and Tamdy virus, TAMV) amplification assays and characterized by sequencing. Results: A total of 93 animal plasma samples and 1265 samples from 11 tick species were screened in 192 pools. Crimean–Congo hemorrhagic fever virus (CCHFV) was detected in five tick species in ten pools (5.2%). Three distinct virus lineages, including Europe 1 and 2, as well as Africa 1, were noted. TcTV-1 was identified in 6 tick species in 12 pools (6.3%) and in a cattle plasma sample. Analysis of the nucleoprotein-encoding sequences revealed two separate virus clades, distinct from those reported from Asia and Europe. TAMV was identified in two tick species (1%). We further detected JMTV in 7 pools (3.6%), with sequences forming a new clade phylogenetically closer to viruses of Asian origin than local strains. Finally, highly divergent sequences of a novel nairovirus, forming a distinct group sharing ancestors with TcTV-1, TAMV, and pangolin/tick-associated nairoviruses, was observed in four pools (2%), comprising Haemaphysalis parva ticks. Conclusions: We described a previously undocumented diversity of tick-borne viral pathogens, CCHFV, TcTV-1, and JMTV, in Anatolia. Possible animal reservoirs of TcTV-1 were identified. These pathogens and TAMV should be considered in the diagnostic workup of cases with symptoms associated with tick bites and in future surveillance efforts. © 2025 Elsevier B.V., All rights reserved.