• Title, Summary, Keyword: Follicle numbers

Search Result 30, Processing Time 0.034 seconds

Effect of Follicle Size in Jeju Mare on Oocytes Matured in vitro (제주말에서 난포 크기에 따른 난포란의 체외성숙)

  • Yoo, Jae-Gyu;Kang, Tae-Young
    • Journal of Veterinary Clinics
    • /
    • v.27 no.1
    • /
    • pp.46-49
    • /
    • 2010
  • In this study, we investigated the number of follicles, oocyte recovery rate and oocyte competence after in vitro maturation according to the size of follicle. And equine oocyte competence after in vitro maturation was investigated in terms of the diameter of follicle with criteria of maturation: nuclear stage after Hoechst staining. The average number of follicles per ovary with middle size (11-20 mm, 2.68) was higher than those of small (5-10 mm, 0.74) and large size follicle (> 21 mm, 1.63), therefore medium follicle (53.1%) had higher proportion than other size of follicles. The average numbers of follicle per ovary was 5.05. The rate of oocyte recovery in small (54.5%) and middle follicle (50%) was higher than that in large follicle (40.9%). After culture for 48 h in Medium 199, 50%, 45.5%, and 44.4% of oocytes from the follicles with diameters of 5-10, 11-20, > 21 mm, respectively reached the metaphase II stage. This is the first report showing number of follicle, oocyte recovery rate according to follicular size, and in vitro oocyte maturation in Jeju mare in Korea. To fulfill in vitro equine embryo production, further studies such as the seasonal effect, in vitro fertilization etc is need.

Changes in Number of Granulosa Cells, Follicular Fluid Levels and Diameter of Oocytes during Folliculogenesis in Pre-pubertal Gilts at Marketing Weight

  • Chiou, C.M.;Yang, T.S.;Yeh, S.P.;Tsai, M.Z.;Cheng, S.P.;Huang, M.C.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.17 no.12
    • /
    • pp.1647-1651
    • /
    • 2004
  • The follicles (1.8 to 7.8 mm in diameter) were recovered from the ovaries in marketed pigs and the number of granulosa cells, the diameter of oocytes obtained from different development stages of the follicles and follicular fluid levels were determined. Correlations between size measurements and cell counts as well as the diameter of antral follicles and oocytes were also investigated. The results indicated that, while expanding in size, follicle numbers decreased with a greater atretic proportion. Granulosa cells increased in numbers continuously and remained unchanged beyond the size of 200 ${mm}^3$ in non-atretic follicles, whereas a sudden drop of granulosa counts was observed in atretic follicles. Follicular fluid, on the other hand, linearly increased its volume with follicle size and differed little between those of non-atretic and atretic follicles. Diameters of oocytes in non-atretic follicles increased to its maximum when follicles expanded to 150 ${mm}^3$ and maintained its size during later follicular expansion. It is concluded that, for in vitro culture, the optimal size of porcine follicle should be between 150 to 180 ${mm}^3$if they are collected from pre-pubertal gilts of marketing size slaughtered in an abattoir.

Influence of the Dominant Follicle on the Superovulatory Response in Cattle

  • Manik, R.S.;Singla, S.K.;Palta, P.;Madan, M.L.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.11 no.4
    • /
    • pp.404-409
    • /
    • 1998
  • Nine cows were superovulated by administration of 8 injections of Folltropin each (2.5 ml/injection, 1.75 mg/ml) i.m spread over 4 days, beginning on Day 10 of oestrous cycle, and 30 and 20 mg prostaglandin $F_{2{\alpha}}$ was given along with the 5th and 6th injections of Folltropin, respectively, to induce luteolysis. The animals were artificially inseminated 48, 60 and 72 h after the first prostaglandin $F_{2{\alpha}}$ injection. The number of corpora lutea was recorded by palpation per rectum and by ultrasonography on Day 6 (Day 0 = day of oestrus). The ovaries were examined daily by ultrasonography on Days 3-9 of the oestrous cycle for following the growth and regression of the largest follicle, which was considered the morphologically dominant follicle. The animals were classified into two groups depending upon the presence (n = 4) and absence of a dominant follicle (n = 5). There was a high correlation (r = 0.97, p < 0.001) between the number of corpora lutea observed by palpation per rectum and that determined by ultrasonography. Mean (${\pm}SEM$) number of corpora lutea determined by ultrasonography ($11.20{\pm}3.71$ vs $3.25{\pm}0.75$) and by palpation per rectum ($10.40{\pm}3.91$ vs $2.25{\pm}0.75$) was significantly higher (p < 0.05) in the nondominant group compared to that in the dominant group. There was no difference in the numbers of follicles 2-3 mm ($13.80{\pm}4.49$ vs $8.00{\pm}1.08$), 4-6 mm ($7.00{\pm}1.87$ vs $3.50{\pm}1.33$), and the total number of follicles ${\geq}2mm$ ($22.00{\pm}5.95$ vs $12.50{\pm}1.26$) between the two groups, one day prior to initiation of superovulation. There was, however, a significant (p<0.01) positive correlation between the number of corpora lutea with the numbers of follicles 2-3 mm (r = 0.83), 4-6 mm (r = 0.80) and the total number of follicles ${\geq}2mm$ (r = 0.89) observed one day prior to initiation of superovulation. The results of this study indicate that the presence of a dominant follicle adversely affects the superovulatory response in cattle.

Hair Growth Promoting Potential of Phospholipids Purified from Porcine Lung Tissues

  • Choi, Seong-Hyun;Moon, Jeong-Su;Jeon, Byung-Suk;Jeon, Yeon-Jeong;Yoon, Byung-Il;Lim, Chang-Jin
    • Biomolecules & Therapeutics
    • /
    • v.23 no.2
    • /
    • pp.174-179
    • /
    • 2015
  • BP201, porcine lung tissue-derived phospholipids, consists of phosphatidylcholine as a major phospholipid species. BP201 promoted hair growth after application onto the shaved backs of BALB/c and C3H mice. Its effect was enhanced when applied together with minoxidil (MNX) in C3H mice. When the tissue specimens prepared from the shaved skins of BP201-treated and control mice were microscopically examined, the total numbers of hair follicles in both anagen and telogen phases of BP201-treated mice were significantly higher than those of control mice. The numbers of hair follicles in the anagen phase of BP201-treated mice were also higher than those of control mice. In combination with MNX, BP201 further increased the total number of hair follicles, but did not alter the percentage of hair follicles in the anagenic phase. BP201 also increased the proliferation of human hair follicle dermal papilla cells. Collectively, BP201 possesses hair growth promoting potential, which would suggest its use singly or in combination for hair growth products.

The Clinical Significance of Serum Vascular Endothelial Growth Factor Levels Measured at Ovulation Triggering Day In Intrauterine Insemination Cycles (자궁강 내 인공수정을 위한 과배란유도 시 hCG 투여 일에 측정한 혈중 Vascular Endothelial Growth Factor의 임상적 의의)

  • Kim, Hyun-Jun;Jee, Byung-Chul;Suh, Chang-Suk;Kim, Seok-Hyun;Choi, Young-Min;Kim, Jung-Gu;Moon, Shin-Yong
    • Clinical and Experimental Reproductive Medicine
    • /
    • v.34 no.1
    • /
    • pp.33-39
    • /
    • 2007
  • Objective: The objective of this study was to investigate whether serum levels of vascular endothelial growth factor (VEGF) measured at ovulation triggering day reflect ovarian response in intrauterine insemination (IUI) cycles. Methods: Forty-nine fertile women who undergoing superovulation and IUI were included. Superovulation was performed using clomiphene citrate (100 mg/d on day 3$\sim$7) in combination with human menopausal gonadotropin (150 IU every other day starting on day 5). Serum samples were obtained on the day of hCG administration and the levels of VEGF-A and estradiol were measured. The numbers of mature follicle $\geq$17 mm in diameter were also counted. Results: Serum VEGF-A levels did not correlate with the numbers of mature follicle count nor serum estradiol levels. Serum estradiol level was positively associated with mature follicle count. Serum VEGF-A levels tended to be lower in women with mature follicle count less than three or women with more than five. Conclusion: Our results indicate that serum VEGF-A levels do not have an association with superovulation outcome in IUI cycles. However, a tendency of lower VEGF-A level in poor and high responder suggests that those with extreme response to superovulation may be related with abnormal angiogenesis. Further studies should be warranted in larger populations.

Effects of Ovarian Morphology and Culture Vessel on In vitro Development and Cell Number in Embryos of Korean Native Cows

  • Park, Yong-Soo;Kim, Jae-Myeoung
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.20 no.1
    • /
    • pp.31-35
    • /
    • 2007
  • The main purpose of this study was to improve the efficiency and quality of in vitro embryo production in Korean Native Cows (KNC). We examined the effects of ovarian morphologies (Experiment 1) and the culture vessel (Experiment 2) on in vitro maturation (IVM). We measured the subsequent development rates and cell numbers of blastocysts. In Experiment 1, the ovaries of KNC were divided into six groups, based on follicle and corpus luteum (CL) morphology. The development rates to the 2- and 8-cell stages were similar among the six groups. The development rates to blastocyst stages were significantly higher in the group without a CL or follicle (WOCL/F) than in the groups with follicular cysts (FCs), regressive CLs (RCLs) or cystic CLs (CCLs) (p<0.05). The cell number of the inner cell mass (ICM) of blastocysts in the FCs and RCLs groups, and the number of cells in the trophectoderm (TE) in the WOCL/F group, FCs, growing CLs (GCLs) and RCLs were significantly higher than in other groups (p<0.05). The total cell number (TCN) in the WOCL/F, FC and RCL groups was also significantly higher than in other groups (p<0.05). The ICM cell number/TCN ratio was significantly higher in the FC and RCL groups than in the GCL and DF groups (p<0.05). In Experiment 2, oocyte IVM was carried out in culture dishes, in 0.25- or 0.5-ml straws used for freezing sperm. The development rate to the 2-cell stage was significantly higher in the 0.5-ml straw group than in the 0.25-ml straw group. The development rates to the blastocyst stage were similar in the dish and the two straw groups. There were no differences in the cell numbers of ICM, TE or TCN or ICM cell number/TCN ratios between groups.

Evolutionary Pattern and Taxonomy of Psyllid (Homoptera: Psylloidea) 1. On the Subfamily Spondyliaspidinae (나무이의 계통분류 및 진화적 패턴 (나무이상과: 동시목) - 1. 호주나무이아과를 중심으로)

  • Hee Cheon Park;Keith L. Tayler
    • Animal Systematics, Evolution and Diversity
    • /
    • v.19 no.1
    • /
    • pp.139-147
    • /
    • 2003
  • Burckhardt (1987) combined Aphalaridae and Spondyliaspididae into the Psyllidae, as there were no character sets which had clearly defined these three families. During the analysis on the character evolution of the psyllids from the world including Australia, there were a few different results for the taxonomy of the Spondyliaspidinae. 52 species and 28 genera in the Australian native psyllids were dissected to examine the taxonomic position of the subfamily Spondyliaspidinae. All of the dissected psyllids in the subfamily Spondyliaspidinae had one follicle in the male testes, but the subfamilies of the Psyllidae except Spondyliaspidinae were having two or more follicles. By the characteristics with living on the Eucalyptus host plants recently evolved, having just one follicle which clearly defined it from other families and experienced an explosive specific diversification in the Gondwana region, it is reasonable to separate the subfamily Spondyliaspidinae from the family Psyllidae with two or more follicles.

Comparison of Superovulation Outcomes between Short and Long Protocols Using Gonadotropin-Releasing Hormone Agonist in Patients with High Basal Serum Follicle Stimulating Hormone Levels (기초 혈중 Follicle Stimulating Hormone 농도가 높은 체외수정시술 환자의 과배란유도시 Gonadotropin-Releasing Hormone Agonist의 단기투여법과 장기투여법의 비교)

  • Kim, Seok-Hyun;Song, Eun-Seop;Song, Yong-Sang;Lee, Kyung-Hee;Kim, Jung-Gu;Moon, Shin-Yong;Lee, Jin-Yong;Chang, Yoon-Seok
    • Clinical and Experimental Reproductive Medicine
    • /
    • v.18 no.2
    • /
    • pp.201-208
    • /
    • 1991
  • Recently the application of gonadotropin-releasing hormone (GnRH) agonist to superovulation in previous poor responders has resulted in the improved outcomes after in vitro fertilization (IVF) outcome. However, poor responders with poor estradiol $(E_2)$ rise or single dominant follicle are a particularly challenging group. Recent reports have also shown that patients with higher basal serum follicle stimulating hormone (FSH) level, result in poorer ovarian response and lower pregnancy rate. Analysis of the differences of superovulation outcomes according to the different protocols of GnRH agonist, long (L, n = 18) and short (S, n = 16) protocols, in patients with high basal FSH levels (>20mIU/ml) were undertaken at Seoul National University Hospital from June to October 1990. The administration of GnRH agonist was begun on day 21 of the cycle in long protocol, and on day 2 in short protocol. Ages of patients and husbands, basal FSH and luteinizing hormone (LH) levels and FSH/LH ratio did not differ significantly. Types and causes of infertility were evenly distributed. Whereas the duration of stimulation and the amounts of gonadotropins administered were significantly reduced in short protocol, the numbers of oocytes retrieved and cleaved, the cleavage rate and the number of embryos transferred were higher in long protocol without statistical signifieance. The pregnancy rate per ET was 16.7% (2/12) in short protocol, and 17.6% (3/17) in long protocol. These data suggest that both protocols result in the similar superovulation outcomes in patients with higher basal serum FSH levels.

  • PDF

Polymorphism, Genetic Effect and Association with Egg Production Traits of Chicken Matrix Metalloproteinases 9 Promoter

  • Zhu, Guiyu;Jiang, Yunliang
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.27 no.11
    • /
    • pp.1526-1531
    • /
    • 2014
  • Matrix metalloproteinases (MMP) are key enzymes involved in cell and tissue remodeling during ovarian follicle development and ovulation. The control of MMP9 transcription in ovarian follicles occurs through a core promoter region (-2,400 to -1,700 bp). The aim of this study was to screen genetic variations in the core promoter region and examine MMP9 transcription regulation and reproduction performance. A single cytosine deletion/insertion polymorphism was found at -1954 $C^+/C^-$. Genetic association analysis indicated significant correlation between the deletion genotype ($C^-$) with total egg numbers at 28 weeks (p = 0.031). Furthermore, luciferase-reporter assay showed the deletion genotype ($C^-$) had significantly lower promoter activity than the insertion genotype ($C^+$) in primary granulosa cells (p<0.01). Therefore, the identified polymorphism could be used for marker-assisted selection to improve chicken laying performance.

Dose-related Effects of Follicle Stimulating Hormone on Superovulation in Indigenous Cows of Bangladesh

  • Hossein, M.S.;Shamsuddin, M.;Bhuiyan, M.M.U.;Khan, A.H.M.S.I.;Bari, F.Y.
    • Journal of Embryo Transfer
    • /
    • v.17 no.2
    • /
    • pp.123-128
    • /
    • 2002
  • The present study aimed at determining the effective dose of Folltropin, a follicle timulating hormone (FSH), on superovulation in indigenous cows of Bangladesh. Fifteen regularly cycling 5~7 years old dry cows, weighing 200~250 kg with 2.5~3.0 body condition scores (BCS) were divided into three groups (n=5). Individual groups were superovulated with 100, 200 or 300 mg of Folltropin per animal. The superovulation treatment was initiated at Day 10 or Day 11 of the estrous cycle (Day 0=day of estrus). Alfaprostol (6 mg) was injected to each cow 72 h after the initiation of superovulation treatment to induce eestrus. After confirming standing estrus, the cows were inseminated 2~3 times, 12 h apart, depending on the duration of estrus. At Day 6 or Day 7, individual horns of the uterus were flushed with 150~200 $m\ell$ of phosphate buffered saline supplemented with BSA (0.2%), penicillin (100 IU/$m\ell$) and streptomycin (100 $\mu\textrm{g}$$m\ell$) using a two-way foley catheter. The embryos were concentrated, removing the excess medium through an embryo filter, and identified under a stereomicroscope. The identified embryos were collected, washed four times, evaluated and graded as excellent, good, fair or poor. The excellent, good and fair embryos were considered as transferable quality embryos. The mean (range). numbers of embryos collected vs. transferable quality embryos far 100, 200 and 300 mg of Folltropin were 4.5 (1~10) vs. 3.5 (1~8); 2.5 (1~4) vs. 1 (0~2) and 0.0 (0~0) vs. 0.0 (0~0), respectively, Folltropin at a dose of 100 or 200 mg produced suitable ovarian stimulation for superovulation in indigenous zebu cows of Bangladesh. A dose of 300 mg or more Folltropin consistently caused preovulatory corpora lutea formation in the ovaries and resulted in zero embryo recovery.