Effect of serum IGF-I on progesterone concentration during early pregnancy in Korean native cattle (Hanwoo)

Yang Hwan Ryu; Jong Yong Yang; Dong Sam Seo; Yong Ko

doi:10.5713/ajas.2003.176

Effect of serum IGF-I on progesterone concentration during early pregnancy in Korean native cattle (Hanwoo)

Yang Hwan Ryu, Jong Yong Yang, Dong Sam Seo, Yong Ko

Division of Biotechnology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Insulin-like growth factor-I (IGF-I) is a polypeptide that has the function of regulating the expression of steroid hormones through endocrine, paracrine, and autocrine actions in reproductive organs. Moreover, IGF-I is involved in ovulation, implantation, maintenance of pregnancy, and development of fetuses in animals. Therefore, this study was conducted to investigate the effects of serum IGF-I concentration on progesterone (P₄) concentration and pregnancy rates in Korean native cattle (Hanwoo). Blood was collected at estrus (Day 0) and Day 11. Artificial insemination was performed at Day 0. Serum IGF-I and P₄ concentrations were measured by radioimmunoassay (RIA). Overall, P₄ concentration was higher at Day 11 than Day 0, whereas the pattern of IGF-I concentration was reversed. When animals were divided into two groups depending on the pregnancy status, P₄ concentrations of the pregnant group was significantly higher than that of the non-pregnant group at Day 0 (p<0.05) and Day 11 (p<0.05). But, lower IGF-I concentrations were detected in the pregnant group at Day 0 (p<0.05) and Day 11 (p<0.05) compared to the non-pregnant group. In conclusion, these results indicated that serum IGF-I is inversely associated with P₄ concentration during early pregnancy in Hanwoo.

Original language	English
Pages (from-to)	176-179
Number of pages	4
Journal	Asian-Australasian Journal of Animal Sciences
Volume	16
Issue number	2
DOIs	https://doi.org/10.5713/ajas.2003.176
Publication status	Published - 2003 Feb 1

Keywords

Early Pregnancy
IGF-I
Korean Native Cattle
Progesterone

ASJC Scopus subject areas

Food Science
Animal Science and Zoology
Engineering(all)

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10.5713/ajas.2003.176

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title = "Effect of serum IGF-I on progesterone concentration during early pregnancy in Korean native cattle (Hanwoo)",

abstract = "Insulin-like growth factor-I (IGF-I) is a polypeptide that has the function of regulating the expression of steroid hormones through endocrine, paracrine, and autocrine actions in reproductive organs. Moreover, IGF-I is involved in ovulation, implantation, maintenance of pregnancy, and development of fetuses in animals. Therefore, this study was conducted to investigate the effects of serum IGF-I concentration on progesterone (P4) concentration and pregnancy rates in Korean native cattle (Hanwoo). Blood was collected at estrus (Day 0) and Day 11. Artificial insemination was performed at Day 0. Serum IGF-I and P4 concentrations were measured by radioimmunoassay (RIA). Overall, P4 concentration was higher at Day 11 than Day 0, whereas the pattern of IGF-I concentration was reversed. When animals were divided into two groups depending on the pregnancy status, P4 concentrations of the pregnant group was significantly higher than that of the non-pregnant group at Day 0 (p<0.05) and Day 11 (p<0.05). But, lower IGF-I concentrations were detected in the pregnant group at Day 0 (p<0.05) and Day 11 (p<0.05) compared to the non-pregnant group. In conclusion, these results indicated that serum IGF-I is inversely associated with P4 concentration during early pregnancy in Hanwoo.",

keywords = "Early Pregnancy, IGF-I, Korean Native Cattle, Progesterone",

author = "Ryu, {Yang Hwan} and Yang, {Jong Yong} and Seo, {Dong Sam} and Yong Ko",

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AU - Ko, Yong

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AB - Insulin-like growth factor-I (IGF-I) is a polypeptide that has the function of regulating the expression of steroid hormones through endocrine, paracrine, and autocrine actions in reproductive organs. Moreover, IGF-I is involved in ovulation, implantation, maintenance of pregnancy, and development of fetuses in animals. Therefore, this study was conducted to investigate the effects of serum IGF-I concentration on progesterone (P4) concentration and pregnancy rates in Korean native cattle (Hanwoo). Blood was collected at estrus (Day 0) and Day 11. Artificial insemination was performed at Day 0. Serum IGF-I and P4 concentrations were measured by radioimmunoassay (RIA). Overall, P4 concentration was higher at Day 11 than Day 0, whereas the pattern of IGF-I concentration was reversed. When animals were divided into two groups depending on the pregnancy status, P4 concentrations of the pregnant group was significantly higher than that of the non-pregnant group at Day 0 (p<0.05) and Day 11 (p<0.05). But, lower IGF-I concentrations were detected in the pregnant group at Day 0 (p<0.05) and Day 11 (p<0.05) compared to the non-pregnant group. In conclusion, these results indicated that serum IGF-I is inversely associated with P4 concentration during early pregnancy in Hanwoo.

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Effect of serum IGF-I on progesterone concentration during early pregnancy in Korean native cattle (Hanwoo)

Abstract

Keywords

ASJC Scopus subject areas

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