Fayez Mahmoud M, Swelum Ayman A, Alharbi Nada K, AlRokban Ahlam H, Almubarak Abdullah, Almubarak Ameen H, Alaql Fanan, Ahmed Ahmed E
Department of Bacteriology, Veterinary Serum and Vaccine Research Institute, Ministry of Agriculture, Cairo, Egypt.
Al Ahsa Laboratory, Ministry of Agriculture Kingdom of Saudi Arabia, Al Ahsa, Saudi Arabia.
Front Vet Sci. 2022 Jul 8;9:905962. doi: 10.3389/fvets.2022.905962. eCollection 2022.
Multilocus sequence typing (MLST) was used to study the genetic diversity and population structure of 48 () isolates from the udder or genital tract of apparently healthy or diseased camels. This study aimed also to determine the frequency of isolates in the genital tract and udder of healthy or diseased female dromedary camels. A total of 240 mature dromedary camels (230 females and 10 males) were categorized based on the clinical examination of gentile tract and udder into five groups [fertile females ( = 70), infertile females ( = 115), healthy udder ( = 15), mastitis ( = 30), and fertile males ( = 10)]. Swabs were collected from male and female genital tracts of dromedary camels and milk samples were collected from healthy and diseased udders. was isolated from 20% of the samples. The frequency of isolation was significantly higher ( < 0.00001) in disease camels (75%) compared with apparently healthy camels (25%). Most of was isolated from infertile female genitalia (62.50%) which was significantly higher than that isolated from fertile female genitalia (16.67%). Multilocus sequence (MLS) analysis identified seven different diploid sequence types (DSTs) including DST2, DST50, DST62, DST69, DST124, DST142, and DST144. The most frequently identified DTS was DST69 (13/48) which significantly higher ( ≤ 0.05) than DST2, DST62, and DST124. The frequency of identification of DST50, DST142, and DST 144 was significantly higher ( ≤ 0.05) than DST62. DST62 and DST124 were isolated only from diseased camels. DST62 was isolated only from mastitic milk. DST124 was isolated only from infertile female genitalia. The percentage of DST50 and DST 142 was significantly higher in diseased camels (infertile females) than in the apparently healthy ones (fertile females). DST2 and DST50 were isolated only from female genitalia of apparent health and diseased camels. The isolated from diseased camels had significantly higher biofilm formation, hydrophobicity, phospholipase, proteinase, and hemolysin activities compared with the isolates from apparent healthy camels. All isolates were sensitive to amphotericin B, itraconazole, micafungin, posaconazole and voriconazole. In conclusion, the present study represents the first molecular typing of in samples isolated from milk and the genital tract of the dromedary camel. MLST is a useful tool for studying the epidemiology and evolution of . Early identification of species and attention to virulence factors and their antifungal susceptibility patterns is very important for establishing strategies to control and/or prevent candidiasis by novel therapeutic management. Amphotericin B, itraconazole, micafungin, posaconazole, or voriconazole can be efficient in treatment of candidiasis.
多位点序列分型(MLST)用于研究从明显健康或患病骆驼的乳房或生殖道分离出的48株念珠菌的遗传多样性和种群结构。本研究还旨在确定健康或患病雌性单峰骆驼生殖道和乳房中念珠菌的分离频率。根据生殖道和乳房的临床检查,将总共240头成年单峰骆驼(230头雌性和10头雄性)分为五组[可育雌性(n = 70)、不育雌性(n = 115)、健康乳房(n = 15)、乳腺炎(n = 30)和可育雄性(n = 10)]。从单峰骆驼的雄性和雌性生殖道采集拭子,并从健康和患病乳房采集乳汁样本。20%的样本中分离出了念珠菌。与明显健康的骆驼(25%)相比,患病骆驼(75%)的分离频率显著更高(P < 0.00001)。大多数念珠菌分离自不育雌性生殖器(62.50%),这显著高于从可育雌性生殖器分离出的比例(16.67%)。多位点序列(MLS)分析确定了七种不同的二倍体序列类型(DSTs),包括DST2、DST50、DST62、DST69、DST124、DST142和DST144。最常鉴定出的DTS是DST69(13/48),其显著高于DST2、DST62和DST124(P ≤ 0.05)。DST50、DST142和DST144的鉴定频率显著高于DST62(P ≤ 0.05)。DST62和DST124仅从患病骆驼中分离出。DST62仅从患乳腺炎的乳汁中分离出。DST124仅从不育雌性生殖器中分离出。患病骆驼(不育雌性)中DST50和DST142的比例显著高于明显健康的骆驼(可育雌性)。DST2和DST50仅从明显健康和患病骆驼的雌性生殖器中分离出。与从明显健康骆驼分离出的菌株相比,从患病骆驼分离出的念珠菌具有显著更高的生物膜形成、疏水性、磷脂酶、蛋白酶和溶血素活性。所有分离株对两性霉素B、伊曲康唑、米卡芬净、泊沙康唑和伏立康唑敏感。总之,本研究代表了首次对从单峰骆驼乳汁和生殖道分离出的样本中的念珠菌进行分子分型。MLST是研究念珠菌流行病学和进化的有用工具。早期鉴定念珠菌种类并关注其毒力因子及其抗真菌药敏模式对于通过新型治疗管理建立控制和/或预防念珠菌病的策略非常重要。两性霉素B、伊曲康唑、米卡芬净、泊沙康唑或伏立康唑可有效治疗念珠菌病。