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Sawsan Ali Omer سوسن علي عمر

Professor

Faculty Member

كلية العلوم
الدرعية
المنشورات
مقال فى مجلة
2020

Genotyping of Clostridium perfringens Isolates from Domestic Livestock in Saudi Arabia.

B., Omer, S. A., Al-Olayan, E. M., Babiker, S. E. H., Aljulaifi, M. Z., Alagaili, A. N., & Mohammed, O. . 2020

Saudi Arabia and to characterize the genes encoding to alpha, beta, epsilon, and iota (α-, β-, ε-, and ι-) toxins. C. perfringens were confirmed in 104 out of 136 isolates on multiplex polymerase chain reaction using specific primers amplifying genes related to toxins produced by C. perfringens. Genes encoding α-toxins were detected in 104 samples. Of the isolates, 80.8% were diagnosed as type A, 15.4% as type D, 2.9% as type C, and 0.96% as type B. None of the isolates has genes encoding iota (ι-) toxin. All isolates investigated yielded enterotoxin (cpe) products and none yielded β2 (cpb2-toxin) or NetB products. PLC gene sequences encoding α-toxin showed >96.7% similarity. Isolates which had α-toxins as well as enterotoxin (cpe) are regarded as type F. Phylogenetic analysis using maximum likelihood analysis yielded two clades, and the majority of the isolates were in one group while only two isolates clustered on the second clade. Within the Kingdom of Saudi Arabia strains, 54 variable positions and 23 polymorphic amino acids were noticed. Isolates with ε- and β-toxins were variable and were found to be close to those published for C. perfringens. ETX gene sequences encoding ε-toxins were found to be related to CPE sequences.

مجلة/صحيفة
BioMed Research International
الصفحات
doi.org/10.1155/2020/9035341.
مزيد من المنشورات
publications

Arabia—was performed using enzyme-linked immunosorbent assay for detecting antibodies against two cyst-forming coccidian parasites, namely Toxoplasma gondii and Neospora caninum. Antibodies…

بواسطة Mohammed, O.B., Amor, N., Omer, S.A. and Alagaili, A.N.
2020
publications

This study was undertaken to determine the seroprevalence of Toxoplasma gondii in cats
in the area of Riyadh, Saudi Arabia. We examined 200 serum samples collected from stray
and…

بواسطة Mohammed, O. B., Omar, Omar, I., Elamin, Elgailani A., Hamid O. Bushara. , Sawsan A. Omer and Abdulaziz N. Alagaili.
2019
publications

A cross sectional study was conducted during the period 2014–2015, to estimate the prevalence and
assess contribution of some risk factors for the occurrence of enterotoxaemia in sheep,…

بواسطة Omer, S. A., Babiker, S. E. H., Aljulaifi, M. Z., Al-Olayan, E. M., Alagaili, A. N., & Mohammed, O. B.
2020