ارزش تشخیصی مارکرهای آنزیمی لاکتات دهیدروژناز و آلکالین فسفاتاز شیر برای ورم پستان تحت بالینی در گاوهای شیری

محورهای موضوعی : پاتوبیولوژی مقایسه ای

سعید اکبری علی آباد ¹ (گروه دامپزشکی، واحد شوشتر، دانشگاه آزاد اسلامی، شوشتر، ایران.)
سیده ام البنین قاسمیان ² (گروه دامپزشکی، واحد بهبهان، دانشگاه آزاد اسلامی، بهبهان، ایران)
سیده زینب پیغمبر زاده ³ (گروه دامپزشکی، واحد شوشتر، دانشگاه آزاد اسلامی، شوشتر، ایران.)

تاریخ دریافت : 1401/06/18 تاریخ پذیرش : 1401/06/18 تاریخ انتشار : 1400/12/01

کلید واژه: ورم پستان تحت بالینی, لاکتات دهیدروژناز, شمارش سلولهای سوماتیک, آلکالین فسفاتاز, گاو شیری,

چکیده مقاله :

ورم پستان را می توان به روش های مختلفی از جمله تست های فیزیکی، آزمون های بالینی و آزمایشگاهی تشخیص داد. هدف از این مطالعه ارزیابی دقت تشخیص ورم پستان تحت بالینی با استفاده از تست های تشخیصی آنزیمی لاکتات دهیدروژناز و آلکالین فسفاتاز شیر می باشد. در مطالعه حاضر 90 رأس گاو هلشتاین به صورت تصادفی از بین گاوهای پر تولید و کم تولید انتخاب شدند. بر اساس نتیجه تست کالیفرنیایی ورم پستان (CMT)از کارتیه یا کارتیه های مورد نظر 2 نمونه شیر طبق اصول نمونه گیری انجمن ملی ورم پستان امریکا (NMC)اخذ شد. یک نمونه برای کشت میکروبی در نظر گرفته شد و نمونه ی دیگر برای آزمایش لاکتات دهیدروژناز و آلکالین فسفاتاز شیر با استفاده ازکیت های تشخیصی و آزمایش شمارش سلولهای سوماتیک (SCC) استفاده شد. زمانی که کشت میکروبی به عنوان گلد استاندارد تشخیص ورم پستان تحت بالینی در نظر گرفته شد. حساسیت تست SCC ، ALP و LDH به ترتیب 87،3/59 و 4/70 درصد بود. همچنین ویژگی این تست ها به ترتیب 8/77،6/80 و 8/77 درصد بود. نتایج مطالعه نشان داد که همبستگی بالایی بین SCC و LDH و ALP وجود دارد. از لحاظ آماری ارتباط معنی داری بین پاسخ LDH و نتیجه تست SCC مشاهده شد که با افزایش درجه SCC درجه پاسخ آنزیم LDH هم افزایش پیدا کرد. نتایج مطالعه نشان داد که از لحاظ کارایی تشخیص ورم پستان تحت بالینی در گاو به ترتیب SCC ، LDH وALP بهترین تست ها هستند .

چکیده انگلیسی:

Mastitis could be diagnosed by diverse methods, including physical, clinical, and laboratory tests. The present study aimed to evaluate the accuracy of subclinical mastitis diagnosis using enzymatic diagnostic tests for milk lactate dehydrogenase (LDH) and alkaline phosphatase (ALP).  This study was performed on 90 Holstein cows selected randomly out of high- and low-yielding dairy cattle. According to the result of the California Mastitis Test, two milk samples were obtained from the intended udder quarters based on the principles of the National Mastitis Council. One specimen was used for microbial culture and the other one was utilized for somatic cell count (SCC), as well as milk LDH and ALP tests by diagnostic kits. Considering microbial culture as the gold standard for subclinical mastitis diagnosis, the sensitivity of SCC, ALP, and LDH tests was 87%, 59.3%, and 70.4%, respectively. Moreover, the specificity of these tests was 77.8%, 80.6%, and 77.8%, respectively. Our findings revealed a strong correlation between SCC, LDH, and ALP. It was observed that an increase in SCC was accompanied by augmented LDH response. According to the results of the present study, SCC was the most efficient test for diagnosing subclinical mastitis in dairy cows, followed by LDH and ALP.

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