Streptococcus (S.) species are important pathogens that cause mastitis in?sheep. The study aimed to?examine Streptococcus species in?sheep milk with subclinical mastitis, assessing their prevalence, antimicrobial resistance, and virulence gene...
The fermented liquid sector is developing all over the world due to its contribution to health. Our study has contributed to the debate about whether industrially manufactured fermented liquids live up to their claims by analyzing pathogens and beneficial bacteria using a 16S rRNA sequencing technique called metagenomic analysis. Paenibacillus, Lentibacillus, Bacillus, Enterococcus, Levilactobacillus, and Oenococcus were the most abundant bacterial genera observed as potential probiotics. Pseudomonas stutzeri, Acinetobacter, and Collimonas, which have plant-growth-promoting traits, were also detected. The fact that we encounter biocontroller bacteria that promote plant growth demonstrates that these organisms are widely used in foods and emphasizes the necessity of evaluating them in terms of public health. Their potential applications in agriculture may pose a danger to food hygiene and human health in the long term, so our data suggest that this should be evaluated.
30 December 2024 in Animal Health Production and Hygiene
This study was conducted to isolate Vibrio species from sea bass, identify them using molecular methods, and determine their antibiotic resistance. In the research, 100 sea bass samples taken from fish farms in the Aegean region between May and September 2021 were examined. After the phenotypic and genotypic identification of the isolates obtained from the samples, antibiotic resistances were determined by the disk diffusion method and antibiotic resistance genes were determined by multiplex PCR. In this study, 46 (46%) Vibrio spp. isolates were obtained from 100 sea bass samples by conventional and biochemical methods. The obtained 46 isolates were confirmed to be Vibrio spp. by 16S rRNA PCR. From 46 isolates, 22 (47,8%) isolates were identified as V. alginolyticus, 13 (28,2%) isolates as V. harveyi, 3 (6,5%) isolates as V. parahaemolyticus, 1 (2%) isolate as V. vulnificus and 7 (15%) isolates as Vibrio spp. by multiplex PCR. The highest resistance was found to ampicillin (84,8%) in the isolates in the antibiogram. All isolates were found to be susceptible to enrofloxacin and sulfamethoxazole-trimethoprim (100%). In isolates, the highest resistance gene was found to be trimethoprim resistance gene (63%), and the lowest resistance gene was found to be fluoroquinolone resistance gene (6,5%). In this study, it was determined that Vibrio species have an important role as a primary agent in fish diseases, molecular methods give more reliable results in identification, and there is single and multiple antibiotic resistance among isolates.
31 December 2021 in Journal of Anatolian Environmental and Animal Sciences
Nanoteknoloji, 1-100 nm aralığında küçük bir ölçekte maddenin uygulamalı imalat ve manipülasyon bilimidir. Özellikle aşı biliminde nanoteknolojinin kullanımı son yıllarda hızla ortaya çıkmış ve “nanovasinoloji” nin doğmasına yol açmıştır. Nanoteknoloji, hücresel ve humoral bağışıklık tepkilerini artırma fırsatı sunan nano taşıyıcı tabanlı uygulama sistemleri sayesinde aşı gelişiminde gün geçtikçe daha da önemli bir rol oynamaktadır. Nanopartikül tabanlı aşı uygulamaları, aşıları erken bozulmaya karşı koruyabilmektedir, stabiliteyi arttırmaktadır ve iyi adjuvan özelliklerine sahiptir. NP'ler, çeşitli antijenlerin belirli dokulara ve organlara verilmesi için kullanılabilen, biyolojik olarak parçalanabilen, minimum toksisiteye sahip özellikleri ile geleneksel aşı yöntemlerine karşı etkili ve alternatif platformlar sağlamaktadır. Virüs benzeri partiküller, lipozomlar, ISCOM'lar, polimerik, inorganik nanopartiküller ve emülsiyonlar gibi ölçek dışı boyuttaki materyaller, hem aşı antijenlerini stabilize edebilen hem de adjuvan olarak işlev görebilen potansiyel dağıtım araçları olarak dikkat çekmektedir. Nanopartikül materyalinin bileşimi, nanopartiküllerin taşınması ve farmakokinetik özelliklerinde, salınım hızında ve hücresel alımda, biyolojik olarak parçalanabilirliğinde ve biyouyumlulukta önemli bir role sahiptir. Nanopartiküler aşıların, COVID-19 gibi hızla ortaya çıkan pandemilerde ve aşılama ile kontrol altına alınamayan kanserler dahil olmak üzere birçok hastalık için gelecekte aşı geliştirmeye rehberlik edebileceği düşünülmektedir. Bu derleme; nanopartiküllerin fiziksel özellikleri ve nanopartiküler aşı çeşitleri ile ilgili bilgiler sunmakta ve nanopartikül tabanlı aşı teknolojileri kullanılarak yapılan çalışmalara genel bir bakış sağlamaktadır.
1 January 2024 in Kafkas Universitesi Veteriner Fakultesi Dergisi