Abstract
Superovulation (SOV) is a necessary technique to produce large numbers of embryos for embryo transfer. In the conventional methods, follicular stimulating hormone (FSH) is administered to donor cattle twice daily for 3 to 4 days. As this method is labor intensive and stresses cattle, improving this method has been desired. We previously developed a novel and simple SOV method, in which the intramuscular injection of a single dose of FSH in aluminum hydroxide gel (AH-gel) induced the growth of multiple follicles, ovulation and the production of multiple embryos. Here we show that AH-gel can efficiently adsorb FSH and release it effectively in the presence of BSA, a major interstitial protein. When a single intramuscular administration of the FSH and AH-gel mixture was performed to cattle, multiple follicular growth, ovulation and embryo production were induced. However, the treatments caused indurations at the administration sites in the muscle. To reduce the muscle damage, we investigated alternative administration routes and different amounts of aluminum in the gel. By administering the FSH in AH-gel subcutaneously rather than intramuscularly, the amount of aluminum in the gel could be reduced, thus reducing the size of the induration. Moreover, repeated administrations of FSH with AH-gel did not affect the superovulatory response. These results indicate that a single administration of FSH with AH-gel is an effective, novel and practical method for SOV treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 423-429 |
| Number of pages | 7 |
| Journal | Journal of Reproduction and Development |
| Volume | 62 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2016 |
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Keywords
- Aluminum hydroxide gel
- Cattle
- Embryo
- Superovulation
ASJC Scopus subject areas
- Animal Science and Zoology
Cite this
Superovulation with a single administration of FSH in aluminum hydroxide gel : A novel superovulation method for cattle. / Kimura, Koji.
In: Journal of Reproduction and Development, Vol. 62, No. 5, 2016, p. 423-429.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superovulation with a single administration of FSH in aluminum hydroxide gel
T2 - A novel superovulation method for cattle
AU - Kimura, Koji
PY - 2016
Y1 - 2016
N2 - Superovulation (SOV) is a necessary technique to produce large numbers of embryos for embryo transfer. In the conventional methods, follicular stimulating hormone (FSH) is administered to donor cattle twice daily for 3 to 4 days. As this method is labor intensive and stresses cattle, improving this method has been desired. We previously developed a novel and simple SOV method, in which the intramuscular injection of a single dose of FSH in aluminum hydroxide gel (AH-gel) induced the growth of multiple follicles, ovulation and the production of multiple embryos. Here we show that AH-gel can efficiently adsorb FSH and release it effectively in the presence of BSA, a major interstitial protein. When a single intramuscular administration of the FSH and AH-gel mixture was performed to cattle, multiple follicular growth, ovulation and embryo production were induced. However, the treatments caused indurations at the administration sites in the muscle. To reduce the muscle damage, we investigated alternative administration routes and different amounts of aluminum in the gel. By administering the FSH in AH-gel subcutaneously rather than intramuscularly, the amount of aluminum in the gel could be reduced, thus reducing the size of the induration. Moreover, repeated administrations of FSH with AH-gel did not affect the superovulatory response. These results indicate that a single administration of FSH with AH-gel is an effective, novel and practical method for SOV treatment.
AB - Superovulation (SOV) is a necessary technique to produce large numbers of embryos for embryo transfer. In the conventional methods, follicular stimulating hormone (FSH) is administered to donor cattle twice daily for 3 to 4 days. As this method is labor intensive and stresses cattle, improving this method has been desired. We previously developed a novel and simple SOV method, in which the intramuscular injection of a single dose of FSH in aluminum hydroxide gel (AH-gel) induced the growth of multiple follicles, ovulation and the production of multiple embryos. Here we show that AH-gel can efficiently adsorb FSH and release it effectively in the presence of BSA, a major interstitial protein. When a single intramuscular administration of the FSH and AH-gel mixture was performed to cattle, multiple follicular growth, ovulation and embryo production were induced. However, the treatments caused indurations at the administration sites in the muscle. To reduce the muscle damage, we investigated alternative administration routes and different amounts of aluminum in the gel. By administering the FSH in AH-gel subcutaneously rather than intramuscularly, the amount of aluminum in the gel could be reduced, thus reducing the size of the induration. Moreover, repeated administrations of FSH with AH-gel did not affect the superovulatory response. These results indicate that a single administration of FSH with AH-gel is an effective, novel and practical method for SOV treatment.
KW - Aluminum hydroxide gel
KW - Cattle
KW - Embryo
KW - Superovulation
UR - http://www.scopus.com/inward/record.url?scp=84991790870&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84991790870&partnerID=8YFLogxK
U2 - 10.1262/jrd.2016-066
DO - 10.1262/jrd.2016-066
M3 - Article
VL - 62
SP - 423
EP - 429
JO - Journal of Reproduction and Development
JF - Journal of Reproduction and Development
SN - 0916-8818
IS - 5
ER -