کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10891956 | 1082081 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Blood flow to follicles and CL during development of the periovulatory follicular wave in heifers
ترجمه فارسی عنوان
جریان خون به فولیکول ها و کلاول در طی رشد موج فولیکولی در تلیسه ها
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کلمات کلیدی
کبد لوتئوم، فولیکول غالب انحراف فولیکول، الگوی درونی سونوگرافی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
The hemodynamics of the developing CL and the future dominant follicle (DF) was studied in 22 heifers during wave 1 on Days 0 to 5 (Day 0 = ovulation). Color-Doppler ultrasonography was used to determine the resistance index (RI) at the most prominent Doppler signal in an ovarian arterial branch before entry into the ovary; a decrease in RI indicates a downstream increase in vascular perfusion. The RI for each of four intraovarian patterns averaged over days was different (P < 0.05) from each of the other patterns as follows: DF-CL (DF and CL in the same ovary), 0.52 ± 0.02; CL alone, 0.60 ± 0.01; DF alone, 0.67 ± 0.01; neither DF nor CL, 0.78 ± 0.01. The differences in RI among intraovarian patterns began on Day 0 or 1, indicating that the extent of vascular perfusion on Days 0 to 5 for the various patterns may have been influenced by events that occurred before ovulation. The percentage of the DF wall with color-flow signals was greater (P < 0.05) in the DF-CL pattern than in the DF pattern on each of Days 2 to 5 and was greater (P < 0.0001) in the DF-CL pattern when the DF was adjacent to the CL (40.2 ± 2.0%) than when separated (24.5 ± 1.9%). Dimensions of DF (P < 0.01) and CL (P < 0.02) were greater when adjacent to each other. The results supported the hypotheses for wave 1 that (1) vascular perfusion is greater for the DF-CL intraovarian pattern than for the DF or CL pattern and (2) the extent of blood-flow Doppler signals in the wall of the developing DF is greater for the DF-CL pattern than for the DF pattern. Our preferred interpretation is that a change in vascular perfusion of the CL is accompanied by a similar change in perfusion of the DF when the two structures are in the same ovary especially adjacent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theriogenology - Volume 82, Issue 2, 15 July 2014, Pages 304-311
Journal: Theriogenology - Volume 82, Issue 2, 15 July 2014, Pages 304-311
نویسندگان
O.J. Ginther, H.B. Rakesh, M.M. Hoffman,