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Kanegi R, Hatoya S, Kimura K, Yodoe K, Nishimura T, Sugiura K, Kawate N, Inaba T. Generation, characterization, and differentiation of induced pluripotent stem-like cells in the domestic cat. J Reprod Dev 2023; 69:317-327. [PMID: 37880086 PMCID: PMC10721851 DOI: 10.1262/jrd.2022-038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 09/28/2023] [Indexed: 10/27/2023] Open
Abstract
Induced pluripotent stem (iPS) cells are generated from somatic cells and can differentiate into various cell types. Therefore, these cells are expected to be a powerful tool for modeling diseases and transplantation therapy. Generation of domestic cat iPS cells depending on leukemia inhibitory factor has been reported; however, this strategy may not be optimized. Considering that domestic cats are excellent models for studying spontaneous diseases, iPS cell generation is crucial. In this study, we aimed to derive iPS cells from cat embryonic fibroblasts retrovirally transfected with mouse Oct3/4, Klf4, Sox2, and c-Myc. After transfection, embryonic fibroblasts were reseeded onto inactivated SNL 76/7 and cultured in a medium supplemented with basic fibroblast growth factor. Flat, compact, primary colonies resembling human iPS colonies were observed. Additionally, primary colonies were more frequently observed in the KnockOut Serum Replacement medium than in the fetal bovine serum (FBS) medium. However, enhanced maintenance and proliferation of iPS-like cells occurred in the FBS medium. These iPS-like cells expressed embryonic stem cell markers, had normal karyotypes, proliferated beyond 45 passages, and differentiated into all three germ layers in vitro. Notably, expression of exogenous Oct3/4, Klf4, and Sox2 was silenced in these cells. However, the iPS-like cells failed to form teratomas. In conclusion, this is the first study to establish and characterize cat iPS-like cells, which can differentiate into different cell types depending on the basic fibroblast growth factor.
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Affiliation(s)
- Ryoji Kanegi
- Department of Advanced Pathobiology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Osaka 598-8531, Japan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Shingo Hatoya
- Department of Advanced Pathobiology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Osaka 598-8531, Japan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Kazuto Kimura
- Department of Advanced Pathobiology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Osaka 598-8531, Japan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Kyohei Yodoe
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Toshiya Nishimura
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Kikuya Sugiura
- Department of Advanced Pathobiology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Osaka 598-8531, Japan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Osaka 598-8531, Japan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Toshio Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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Wimalarathne HDA, Nakamura Y, Ishizaka K, Silva BDK, Sasakura K, Shimada M, Kibushi M, Sakase M, Kawate N. Age-related changes in circulating INSL3 concentrations and their associations with ovarian conditions in Japanese Black beef cattle. Theriogenology 2023; 211:97-104. [PMID: 37603938 DOI: 10.1016/j.theriogenology.2023.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023]
Abstract
Information on circulating levels of insulin-like peptide 3 (INSL3) in female domesticated animals is limited, as their concentrations are significantly lower than in males. The objectives of the present study were to 1) develop a sandwich time-resolved fluorescence immunoassay (TRFIA) with higher detectability to measure blood INSL3 concentrations in female cattle, 2) determine INSL3 concentrations in female cattle among age groups and reproductive conditions, and 3) explore associations between INSL3 levels and ultrasonographic ovarian measurements. Blood was collected repeatedly from Japanese Black beef female calves (n = 12; 0-8 mo), heifers (n = 10; 10-26 mo), and cows (n = 20; 27-200 mo). Blood was taken from the cows (n = 13) at follicular, post-ovulatory, and luteal phases, and from cows with follicular cysts (n = 12). Ultrasonography of ovaries was conducted in the calves (n = 12) and the cows without ovarian diseases (n = 9). The ovarian area, as well as the number and diameters of antral follicles ≥ 2 mm, were determined in each ovary. The proposed method detected a difference in plasma INSL3 between calves (0.01 ng/mL) and heifers (0.18 ng/mL). However, the conventional assay showed similar levels for calves and heifers (1.82 vs 2.07 ng/mL). Plasma INSL3 and testosterone concentrations increased from calves to heifers (P < 0.0001), but only INSL3 rose from heifers to cows (P < 0.0001). INSL3 and testosterone concentrations did not change across the estrus cycle in cows, and the levels of both hormones in follicular cystic cows did not differ from those in the follicular phase. Ovarian area, maximal and average follicular diameters, and total volume of all follicles per animal were higher in cows than calves (P < 0.001). Plasma INSL3 concentrations correlated positively with the total volumes of all follicles in calves (P < 0.05) and cows (P < 0.05), whereas testosterone concentrations did not correlate with ovarian follicular measurements. In conclusion, plasma INSL3 concentrations measured by the proposed sandwich TRFIA showed a clear increase from female calves to cows in beef cattle. These results suggest that circulating levels of INSL3, but not of testosterone, are associated with the total volume of all antral follicles in both ovaries per animal in female cattle.
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Affiliation(s)
- H D A Wimalarathne
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan
| | - Y Nakamura
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan
| | - K Ishizaka
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan
| | - B D K Silva
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan
| | - K Sasakura
- Hyogo Prefecture College of Agriculture, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Kasai, Hyogo, Japan
| | - M Shimada
- Hyogo Prefecture College of Agriculture, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Kasai, Hyogo, Japan
| | - M Kibushi
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan; M's Veterinary Partners, Tanba, Hyogo, Japan
| | - M Sakase
- Hokubu Agricultural Technology Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Asago, Hyogo, Japan
| | - N Kawate
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan.
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Ho TCT, Kawate N, Koyama K. Predicting nuclear maturation speed of oocytes from Japanese Black beef heifers through non-invasive observations during IVM: An attempt using machine learning algorithms. Theriogenology 2023; 209:235-242. [PMID: 37453399 DOI: 10.1016/j.theriogenology.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
Nuclear maturation is an essential process in which oocytes acquire the competence to develop further. However, the time required for nuclear maturation during IVM varies among oocytes. Therefore, predicting nuclear maturation speed (NMS) could help identify the optimal timing for IVF and maximize the developmental competence of each oocyte. This study aimed to establish machine learning-based prediction models for NMS using non-invasive indicators during the individual IVM of Japanese Black (JB) beef heifer oocytes. We collected ovaries from abattoirs and aspirated cumulus-oocyte complexes (COCs) from follicles with diameters ranging between 2 and 8 mm. The COCs were matured individually for 18 h, and photographs of each COC were taken at the beginning and every 3 h from 12 h to the end of maturation. After IVM culture, we denuded COCs and stained oocytes to confirm the progression of meiosis. Only oocytes that reached the metaphase II (MII) stage were considered to have a fast NMS. Morphological features, including COC area, cumulus expansion ratio, expansion rate per hour, and expansion pattern, were extracted from the recorded photos and applied to develop prediction models for NMS using machine learning algorithms. The MII rates of oocytes with fast- and slow-predicted NMS differed when the decision tree (DT) and random forest (RF) models were employed (P < 0.05). To evaluate the relationship between predicted NMS by DT and RF models and fertilization dynamics during individual IVF, sperm penetration and pronuclear formation were evaluated at 3, 6, 9, and 12 h after IVF start, following 24 h of IVM. The association between predicted NMS and embryo development was investigated by performing IVC for seven days using microwell culture dishes after 24 h of IVM and 6 h of IVF. Predicted NMS did not show a significant association with fertilization dynamics. However, oocytes with fast-predicted NMS by the RF model exhibited a tendency towards a higher cleavage rate 48 h after IVF start (P = 0.08); no other relationship was found between predicted NMS and embryo development. These findings demonstrate the feasibility of using non-invasive indicators during IVM to develop prediction models for NMS of JB beef heifer oocytes. Although the effect of predicted NMS on embryo development remains unclear, customized treatments based on NMS predictions have the potential to improve the efficiency of in vitro embryo production following individual IVM culture.
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Affiliation(s)
- Thomas Chia-Tang Ho
- Laboratory of Theriogenology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Izumisano, 598-8531, Osaka, Japan
| | - Noritoshi Kawate
- Laboratory of Theriogenology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Izumisano, 598-8531, Osaka, Japan
| | - Keisuke Koyama
- Laboratory of Theriogenology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Izumisano, 598-8531, Osaka, Japan.
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Wimalarathne HDA, Wako H, Kawate N. Quantitative analyses of insulin-like peptide 3 and sex steroid hormones in dominant follicles and corpora lutea during the estrus cycle and in follicular cysts in beef heifers. J Reprod Dev 2022; 68:324-329. [PMID: 35922914 DOI: 10.1262/jrd.2022-018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Insulin-like peptide 3 (INSL3) and sex steroids were measured in bovine dominant follicles and corpora lutea during the estrus cycle and in follicular cysts. Paired ovaries from beef heifers (n = 47) were classified, by their morphological features, either into four stages of the estrus cycle (Day 1 = day of ovulation, Day 20 = day of estrus) as Stage I (Days 1-4; n = 8), Stage II (Days 5-10; n = 10), Stage III (Days 11-17; n = 8), and Stage IV (Days 18-20; n = 11) or follicular cystic (n = 10). Cysts (n = 15) were subdivided into estrogen-active (n = 7) and estrogen-inactive (n = 8) cysts. INSL3, testosterone, and estradiol-17β concentrations in the dominant follicular fluid of Stage IV were higher than those in Stages II and III (P < 0.05). INSL3 concentrations in the cystic fluid were similar to those in dominant follicles at Stage IV, whereas testosterone and estradiol-17β concentrations were lower in cysts (P < 0.05). INSL3 content per estrogen-inactive cyst was higher than that of Stage IV (P < 0.05). INSL3 and progesterone concentrations in luteal tissue and contents per corpus luteum were higher in Stages II and III (P < 0.05). In conclusion, INSL3 secretion in bovine dominant follicles increased with maturation. Follicular cysts may retain the production of INSL3 during their formation but tend to lose the capacity for testosterone secretion. Estrogen-inactive cysts subjected to advanced atresia may accumulate more INSL3. INSL3 production in bovine corpora lutea is enhanced during maturation.
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Affiliation(s)
| | - Hiroaki Wako
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan
| | - Noritoshi Kawate
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Izumisano, Osaka, Japan
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Kawate N. Insulin‐like peptide 3 in domestic animals with normal and abnormal reproductive functions, in comparison to rodents and humans. Reprod Med Biol 2022; 21:e12485. [PMID: 36310659 PMCID: PMC9601793 DOI: 10.1002/rmb2.12485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/04/2022] [Accepted: 09/06/2022] [Indexed: 11/07/2022] Open
Abstract
Background Methods Main findings Conclusion
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Affiliation(s)
- Noritoshi Kawate
- Graduate School of Veterinary Science Osaka Metropolitan University Izumisano Japan
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6
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Kawate N, Kanuki R, Hannan MA, Weerakoon WWPN. Inhibitory effects of long-term repeated treatments of a sustainable GnRH antagonist, degarelix acetate, on caprine testicular functions. J Reprod Dev 2020; 66:587-592. [PMID: 32830151 PMCID: PMC7768175 DOI: 10.1262/jrd.2020-035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We investigated the effects of long-term repeated treatments with a sustainable gonadotropin-releasing hormone (GnRH) antagonist, degarelix acetate, on
testicular hormonal secretion, size, ultrasound images, histology and spermatogenesis in goats to assess its efficacy as a chemical castration method. Male
Shiba goats (3–6 months of age) were treated subcutaneously with degarelix acetate every 4 weeks for 24 weeks. Plasma testosterone and insulin-like peptide 3
concentrations decreased (P < 0.05) within 2 days after the first treatment and remained low until 29 weeks (P < 0.05). Scrotal circumference and
testicular pixel intensity were lower from 2–6 months and from 1–6 months, respectively, compared to the pretreatment values (P < 0.05). The testis and
epididymis weights were lower at 24 weeks compared to those in untreated goats (P < 0.05). There were no sperm in the seminiferous tubules of testicular
tissue sections or in homogenates of the epididymis at 24 weeks. These results suggest that repeated treatment with degarelix acetate is an effective chemical
castration method for goats.
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Affiliation(s)
- Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Ryota Kanuki
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan.,Present: Faculty of Veterinary, Animal and Biomedical Sciences, Khulna Agricultural University, Bangladesh
| | - Weerakoon W P N Weerakoon
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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Tsogtgerel M, Komyo N, Murase H, Hannan MA, Watanabe K, Ohtaki T, Tsumagari S, Kawate N, Nambo Y. Serum concentrations and testicular expressions of insulin-like peptide 3 and Anti-Müllerian hormone in normal and cryptorchid male horses. Theriogenology 2020; 154:135-142. [PMID: 32645589 DOI: 10.1016/j.theriogenology.2020.05.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/10/2020] [Accepted: 05/19/2020] [Indexed: 10/24/2022]
Abstract
Insulin-like peptide 3 (INSL3) is an important hormone for testicular descent during embryonic development and a factor for assessing functional status of Leydig cells of testes, but there is limited number of equine studies. Anti-Müllerian hormone (AMH) is a useful diagnostic marker for cryptorchidism in horses. This study aimed to compare serum concentrations and testicular expression intensity of INSL3 and AMH in intact and cryptorchid male horses. Serum INSL3 concentrations in intact (n = 9; mean ± SEM, 19.9 ± 5.9 ng/mL) and noncastrated unilateral cryptorchid (UC) male horses (n = 16; mean ± SEM, 16.8 ± 4.1 ng/mL) were higher compared with hemicastrated unilateral cryptorchid (HCUC) male horses (n = 9; mean ± SEM, 3.8 ± 0.7 ng/mL) (P < 0.05). And serum INSL3 in bilateral cryptorchid (BC) male horses (n = 4; 1.9 ± 0.4; mean ± SEM, ng/mL) were lower compared with intact male horses (P < 0.05). Serum AMH concentrations in BC male horses (n = 3; mean ± SEM, 30.6 ± 4.8 ng/mL) were higher compared with intact male horses (n = 5; mean ± SEM, 12.2 ± 3.9 ng/mL) (P < 0.05). Immunostaining of scrotal and cryptorchid testis showed that Sertoli cells were positive for AMH, and Leydig cells were positive for INSL3. Staining intensity of AMH was higher in cryptorchid testis than in scrotal testis (P < 0.05). Furthermore, AMH expression intensity was higher in abdominal testis than in inguinal testis (P < 0.05). Immunostaining intensity of INSL3 in the testis was positively correlated with serum INSL3 (r, 0.7; P < 0.01), seminiferous tubule area (r, 0.727; P < 0.01), and Johnsen score for spermatogenesis (r, 0.604; P < 0.05), whereas immunostaining intensity of AMH in the testis was negatively correlated with seminiferous tubule area (r, -0.814; P < 0.01) and Johnsen score for spermatogenesis (r, -0.807; P < 0.01). Our findings suggested that AMH is a good biomarker for diagnosing cryptorchidism in male horses, in addition to INSL3 values to assess the testis of intact and cryptorchid male horses.
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Affiliation(s)
- Munkhtuul Tsogtgerel
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, 501-1193, Japan; Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan
| | - Nao Komyo
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan
| | - Harutaka Murase
- Equine Science Division, Hidaka Training and Research Center, Japan Racing Association, Hokkaido, 0570-0171, Japan
| | - M A Hannan
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan
| | - Kenichi Watanabe
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan
| | - Tadatoshi Ohtaki
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan
| | - Shigehisa Tsumagari
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, 598-8531, Japan
| | - Yasuo Nambo
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, 501-1193, Japan; Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan.
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Hannan MA, Murase H, Sato F, Tsogtgerel M, Kawate N, Nambo Y. Age related and seasonal changes of plasma concentrations of insulin-like peptide 3 and testosterone from birth to early-puberty in Thoroughbred male horses. Theriogenology 2019; 132:212-217. [PMID: 31029851 DOI: 10.1016/j.theriogenology.2019.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 04/03/2019] [Accepted: 04/12/2019] [Indexed: 10/27/2022]
Abstract
The peripheral blood concentrations of insulin-like peptide 3 (INSL3) have been detected in many mammalian species, but the level of INSL3 in horse remains unknown. The objectives were to develop a time-resolved fluorescence immunoassay (TRFIA) to detect INSL3 concentrations from horse blood as well as to determine the age-related and seasonal changes of plasma concentrations of INSL3 and testosterone from birth to early-puberty in Thoroughbred male horse (n = 11). Monthly blood sample and measurement of body weight, height, chest and cannon bone size were done from birth until 16 mo. The TRFIA and EIA were used to measure plasma concentrations of INSL3 and testosterone, respectively. An increase in mean body weight, height, chest and cannon bone size was observed throughout the study. The monthly blood sampling revealed an increase in mean plasma INSL3 concentrations up to 2 mo, followed by a decreasing and increasing pattern until the end of experiment at 16 mo. A high testosterone level was detected at birth followed by a sharp decrease to basal level within 1 mo, maintained low level up to10 mo before a gradual rise until 16 mo. In case of seasonality, there was no difference in mean plasma INSL3 concentrations between breeding (March to September) and non-breeding (October to February) seasons, whereas a higher (P < 0.001) mean plasma testosterone concentrations in the second breeding season compared to non-breeding season was observed. In age categorized group, an increase (P < 0.01) in mean plasma INSL3 concentrations was noticed at pre-puberty (1-12 mo) and early-puberty (13-16 mo) compared to birth, but a lower (P < 0.001) mean plasma testosterone concentrations was observed at pre-puberty compared to birth and early-puberty. In conclusion, a TRFIA was developed to measure INSL3 levels in horse. An increase in plasma concentrations of INSL3 and testosterone were observed with the advancement of age, whereas for testosterone a very lower level was detected at the non-breeding season than in the second breeding season after birth in Thoroughbred male horse. The INSL3 secretions seemed independent of seasonal influence, at least before puberty.
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Affiliation(s)
- M A Hannan
- Department of Clinical Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan
| | - Harutaka Murase
- Equine Science Division, Hidaka Training and Research Center, Japan Racing Association, 525-13 Nishicha Urakawa-Cho, Hokkaido, 057-0171, Japan
| | - Fumio Sato
- Equine Science Division, Hidaka Training and Research Center, Japan Racing Association, 525-13 Nishicha Urakawa-Cho, Hokkaido, 057-0171, Japan; United Graduate School of Veterinary Sciences, Gifu University, Gifu, 501-1193, Japan
| | - Munkhtuul Tsogtgerel
- Department of Clinical Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan; United Graduate School of Veterinary Sciences, Gifu University, Gifu, 501-1193, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - Yasuo Nambo
- Department of Clinical Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, 080-8555, Japan; United Graduate School of Veterinary Sciences, Gifu University, Gifu, 501-1193, Japan.
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Alam ME, Iwata J, Fujiki K, Tsujimoto Y, Kanegi R, Kawate N, Tamada H, Inaba T, Sugiura K, Hatoya S. Feline embryo development in commercially available human media supplemented with fetal bovine serum. J Vet Med Sci 2019; 81:629-635. [PMID: 30787208 PMCID: PMC6483925 DOI: 10.1292/jvms.18-0335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Feline embryo development was examined for 7 days after fertilization using commercially
available human media supplemented with 0.3% bovine serum albumin (BSA) or 5% fetal bovine
serum (FBS). Cumulus-oocyte complexes were categorized as Grades 1, 2, and 3 according to
morphology. Only-One Medium (OM) was used for in vitro culture (IVC) in
OM + BSA, OM + FBS, and OM + BSA/FBS, with BSA supplementation for the first 2 days and
FBS for the subsequent 5 days. Embryos cultured in Early Culture Medium (1–2 days) and
Blastocyst Medium (3–7 days) were defined as EB + BSA and EB + BSA/FBS. The developmental
rate until the blastocyst stage of Grade 1 and 2 oocytes cultured in OM + BSA/FBS was
higher than for the other groups and was significantly higher than for the OM + BSA and EB
+ BSA groups (P<0.01). Grade 3 oocytes cultured in OM + BSA/FBS also
showed the greatest proportion of blastocyst formation. However, FBS supplementation
throughout the IVC period reduced blastocyst number. The percentage of 2 pronuclei after
fertilization as well as blastocyst cell number were significantly higher in Grade 1 and 2
than Grade 3 oocytes when cultured in OM + BSA/FBS (P<0.05). These
results indicate that commercially available OM supplemented with BSA for the first 2 days
of culture and FBS for the subsequent 5 days is suitable for feline embryo development
until the blastocyst stage.
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Affiliation(s)
- Md Emtiaj Alam
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Jun Iwata
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Kana Fujiki
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Yasunori Tsujimoto
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Ryoji Kanegi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Toshio Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Kikuya Sugiura
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Shingo Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
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10
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Sakagami N, Konda K, Hashimura S, Kawate N, Inaba T, Tamada H. Production of Japanese Black calves by the transfer of embryos developed from in vitro-fertilized oocytes derived by ovum pick up and matured in culture with the mitogen-activated protein kinase kinase inhibitor U0126. J Vet Med Sci 2019; 81:379-382. [PMID: 30700676 PMCID: PMC6451900 DOI: 10.1292/jvms.18-0460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study investigated whether treatment with the mitogen-activated protein kinase kinase inhibitor U0126 during in vitro maturation (IVM), which has previously been reported to improve oocyte developmental competence, is practical for use in calf production using ovum pick up (OPU)-derived oocytes. Two Japanese Black cows were repeatedly and simultaneously treated to stimulate follicular growth and were prepared for OPU. Cumulus-oocyte complexes (COCs) were collected from one cow using a collection medium containing 5 µM U0126 and were cultured in medium supplemented with the same concentration of U0126 for the first 2 hr of IVM; COCs from the other cow were used as controls without U0126 treatment. The cows were exchanged between the two groups at every sequential OPU (n=8). The number of oocytes developing to blastocysts in the U0126-treated group (39.1%, 34/87) was significantly higher than that in the control group (22.1%, 19/86). Eight blastocysts produced with U0126 treatment were transferred to recipients, and four normal calves were obtained. The results indicate that embryos develop efficiently from OPU-derived oocytes treated with U0126, and that these embryos may be of practical use in calf production.
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Affiliation(s)
- Nobutada Sakagami
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa 243-0417, Japan
| | - Kunitoshi Konda
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa 243-0417, Japan
| | - Shinji Hashimura
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa 243-0417, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Toshio Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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11
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Tadotsu D, Kawate N, Tamada H. Rescue of the fetal damage associated with high intrauterine pressure by 17β-estradiol injection in ovariectomized progesterone-treated pregnant mice. Endocr J 2018; 65:1219-1224. [PMID: 30232307 DOI: 10.1507/endocrj.ej18-0302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The present study examined the effects of progesterone (P) and 17β-estradiol (E2) on fetal damage and intrauterine pressure in ovariectomized pregnant mice. The mice were ovariectomized on gestational day (GD) 9 (copulation plug = GD 0), and daily subcutaneous injection of various doses of P (2, 3 or 4 mg) or 4 mg P plus E2 (0.05 or 0.1 μg) was given thereafter. Although P alone increased percentage of normal fetuses on GD 17 dose-dependently, fetal injury with edematous hematomata on their extremities was frequently observed. In the group treated with 4 mg P, the injured fetus was found at the highest percentage (18%) and intrauterine pressure was significantly higher than that in intact pregnant mice (controls). No injured fetus on GD 17 was found by the treatment with 4 mg P plus 0.05 or 0.1 μg E2, and the treatments decreased the intrauterine pressure to the level of controls. Percentage of normal fetuses in the ovariectomized mice treated with 4 mg P plus 0.05 μg E2 was similar to that of controls, while that in the ovariectomized mice treated with 4 mg P plus 0.1 μg E2 markedly decreased. The results suggest that estrogen decreases intrauterine pressure to defend fetal damage in ovariectomized P-treated mice, and a high estrogen level interrupted pregnancy while keeping this estrogen action.
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Affiliation(s)
- Daisuke Tadotsu
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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12
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Sakase M, Weerakoon WWPN, Hannan MA, Kohama N, Tamada H, Kawate N. LH and testosterone secretions in response to GnRH challenge in pubertal Japanese Black beef bulls with normal and abnormal semen. J Vet Med Sci 2018; 80:1829-1833. [PMID: 30298829 PMCID: PMC6305509 DOI: 10.1292/jvms.18-0151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Plasma luteinizing hormone (LH) and testosterone concentrations were examined in Japanese
Black beef bulls with normal and abnormal semen in response to gonadotropin releasing
hormone (GnRH) challenge at the start (10 months) and completion (20 months) of puberty.
Bulls with normal semen had higher testosterone concentrations after GnRH treatment at 20
months than they did at 10 months, while LH concentrations did not differ between the two
age groups. LH and testosterone concentrations were not different between bulls with
normal and abnormal semen at 20 months. Thus, testosterone secretions in response to the
GnRH challenge were higher for bulls with normal semen at pubertal completion compared to
bulls at the start of puberty, but responsiveness of LH to GnRH and of testosterone to the
LH increment was not altered in bulls with abnormal semen.
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Affiliation(s)
- Mitsuhiro Sakase
- Hokubu Agricultural Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Asago, Hyogo 669-5254, Japan
| | - W W P N Weerakoon
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Namiko Kohama
- Hokubu Agricultural Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Asago, Hyogo 669-5254, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
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13
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Sakase M, Kitagawa K, Kibushi M, Kawate N, Weerakoon WWPN, Hannan MA, Kohama N, Tamada H. Relationships of plasma insulin-like peptide 3, testosterone, inhibin, and insulin-like growth factor-I concentrations with scrotal circumference and testicular weight in Japanese Black beef bull calves. J Reprod Dev 2018; 64:401-407. [PMID: 29984734 PMCID: PMC6189565 DOI: 10.1262/jrd.2018-034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
This study was conducted to clarify the relationships of plasma concentrations of insulin-like peptide 3 (INSL3), testosterone, inhibin, and insulin-like growth factor-I (IGF-I) with scrotal circumference and testicular weight in Japanese Black beef bull calves (n = 20), from birth to pre-puberty. Monthly blood sampling (0 to 7 months) and scrotal circumference measurements (0 to 7 months) were performed. Testicular weight was recorded immediately after castration at 7 months. Plasma INSL3, testosterone, inhibin, and IGF-I concentrations were measured either by enzyme immunoassay or time-resolved fluorescence immunoassay. The correlation coefficients of these hormonal concentrations with scrotal circumference were significant (P < 0.0001) and it was higher for INSL3 (r = 0.647) than for testosterone (r = 0.597), IGF-I (r = 0.400), and inhibin (r = –0.453). Calves with heavier testes (> 60 g) at castration (7 months) had higher (P < 0.05) plasma INSL3 (from 3 to 7 months) and inhibin (from 1 to 4 months) concentrations than those with lighter testes (< 60 g). The calves with heavier testes at castration had larger (P < 0.05) scrotal circumference than those with lighter testes from 3 to 7 months. In conclusion, blood INSL3 concentrations may be the best functional indicator among the hormones analyzed for determining total testicular volume during pre-puberty in bull calves. In addition, inhibin and INSL3 concentrations in early calfhood may be functional predictors for testicular weight at pre-puberty.
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Affiliation(s)
- Mitsuhiro Sakase
- Hokubu Agricultural Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Hyogo 669-5254, Japan
| | - Keita Kitagawa
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Masahiko Kibushi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan.,Asago Animal Hygiene Institute of Hyogo Prefecture, Hyogo 669-5243, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - W W P N Weerakoon
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Namiko Kohama
- Hokubu Agricultural Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Hyogo 669-5254, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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14
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Takahashi M, Honda T, Hatoya S, Inaba T, Kawate N, Tamada H. Efficacy of mechanical micro-vibration in the development of bovine embryos during in vitro maturation and culture. J Vet Med Sci 2018; 80:532-535. [PMID: 29415921 PMCID: PMC5880838 DOI: 10.1292/jvms.17-0607] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It is currently unclear how mechanical micro-vibration affects the in vitro culture of embryos in Japanese Black cow. In the experimental groups, immature oocytes and fertilized embryos were cultured
using the micro-vibration culture system with the vibration set for 5 sec at intervals of 60 min and frequency of 20, 40 or 80 Hz, respectively, during in vitro maturation and in vitro
development. Compared with the control group, the rate of blastocyst development significantly increased in the 40 Hz group. In addition, the number of blastocyst cells reduced significantly in the 80 Hz group. In
conclusion, the development of blastocysts in cows is facilitated by providing moderate mechanical micro-vibration to immature oocytes and embryos during the in vitro maturation and in
vitro development.
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Affiliation(s)
- Masahiro Takahashi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan.,Laboratory of Food Animal Medical Science, Cooperative Department of Veterinary Medicine, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Tatsutoshi Honda
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
| | - Shingo Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
| | - Toshio Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
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15
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Weerakoon WWPN, Sakase M, Kawate N, Hannan MA, Kohama N, Tamada H. Plasma IGF-I, INSL3, testosterone, inhibin concentrations and scrotal circumferences surrounding puberty in Japanese Black beef bulls with normal and abnormal semen. Theriogenology 2018; 114:54-62. [PMID: 29597124 DOI: 10.1016/j.theriogenology.2018.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 03/09/2018] [Accepted: 03/10/2018] [Indexed: 10/17/2022]
Abstract
The relationships between semen abnormalities and peripheral concentrations of testicular and metabolic hormones in beef bulls are unclear. Here we compared plasma insulin-like growth factor I (IGF-I), insulin-like peptide 3 (INSL3), testosterone, inhibin concentrations, and scrotal circumferences surrounding puberty in Japanese Black beef bulls (n = 66) with normal or abnormal semen. We collected blood samples and measured scrotal circumferences monthly from 4 to 24 months of age. Semen was collected weekly from 12 months until at least 18 months of age. Fresh semen was evaluated for semen volume, sperm motility, concentrations, and morphological defects. The normal fresh semen was frozen by a standard method and examined for post-thaw sperm motility and fertility. Bulls were classified as having either normal post-thaw semen (n = 45) or abnormal semen (n = 21, when at least one of the above test items was abnormal for 6 months). Abnormal semen was classified into abnormal fresh or low-fertility post-thaw which evaluated for rates of transferable embryos. The abnormal fresh was categorized as having sperm morphological defects, low motility, and morphological defects plus low motility. Scrotal circumferences were smaller for the abnormal-semen group vs. the normal-semen group at 20 and 24 months (p < 0.05). Plasma IGF-I, INSL3, and inhibin concentrations in the abnormal-semen group were lower than those of the normal-semen group (p < 0.05) surrounding puberty (4-6, 8, 18-22, and 24 months for IGF-I; 6, 9, 11-14, 17, and 20-21 months for INSL3; 5, 8-13, 16, 17, 19, and 20 months for inhibin). The plasma testosterone concentrations were lower in the abnormal-semen bulls vs. normal-semen bulls only at 22 months (p < 0.05). Analyses of the classified abnormal semen showed lower plasma INSL3 concentrations for morphological defects plus low motility in fresh semen (p < 0.05) and lower IGF-I and inhibin concentrations for low-fertility post-thaw semen (p < 0.05) compared to the normal semen. Our results suggest that reduced secretions of IGF-I, INSL3, and inhibin surrounding puberty may be associated with semen aberration in beef bulls. Notably, the combined sperm abnormality of morphological defects and low motility in fresh semen could involve lowered INSL3, whereas the low-fertility post-thaw semen might be related to decreases of IGF-I and/or inhibin. Pre-puberty blood IGF-I, INSL3 and inhibin concentrations could be used as indicators to predict aberrant semen in beef bulls.
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Affiliation(s)
- W W P N Weerakoon
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - M Sakase
- Northern Center of Agriculture Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Asago, Hyogo, Japan
| | - N Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
| | - M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - N Kohama
- Northern Center of Agriculture Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Asago, Hyogo, Japan
| | - H Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
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16
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Shinohara T, Ohta Y, Kawate N, Takahashi M, Sakagami N, Inaba T, Tamada H. Treatment with the MAPK kinase inhibitor U0126 during the first two hours of in vitro maturation improves bovine oocyte developmental competence. Reprod Domest Anim 2017; 53:270-273. [PMID: 29110347 DOI: 10.1111/rda.13096] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 09/06/2017] [Indexed: 11/27/2022]
Abstract
This study examined the effects of treatment with U0126, which inhibits MAPK by inhibiting MAPK kinase, during the first 2 hr of in vitro maturation on bovine developmental competence and on gap junction (GAPJ) communication between the oocyte and cumulus cells. The percentage of oocytes developing to the blastocyst stage in the group treated with 5 μM U0126 (28%) was significantly higher than that in controls (15%, p < .05), while that in the group treated with 10 μM U0126 (18%) was not. Breakdown of the GAPJs was delayed in the group treated with 5 μM U0126 when compared to controls, as estimated by immunohistochemical examination of connexin 43, which is a primary constituent of the GAPJs. These results indicate that treatment with 5 μM U0126 during in vitro maturation delays GAPJ breakdown and improves bovine oocyte developmental competence.
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Affiliation(s)
- T Shinohara
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Y Ohta
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - N Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - M Takahashi
- Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - N Sakagami
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa, Japan
| | - T Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - H Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
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17
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Nishimura T, Unezaki N, Kanegi R, Wijesekera DPH, Hatoya S, Sugiura K, Kawate N, Tamada H, Imai H, Inaba T. Generation of Canine Induced Extraembryonic Endoderm-Like Cell Line That Forms Both Extraembryonic and Embryonic Endoderm Derivatives. Stem Cells Dev 2017; 26:1111-1120. [PMID: 28474540 DOI: 10.1089/scd.2017.0026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Extraembryonic endoderm (XEN) cells are stem cell lines derived from primitive endoderm cells of inner cell mass in blastocysts. These cells have self-renewal properties and differentiate into visceral endoderm (VE) and parietal endoderm (PE) of the yolk sac. Recently, it has been reported that XEN cells can contribute to fetal embryonic endoderm, and their unique potency has been evaluated. In this study, we have described the induction and characterization of new canine stem cell lines that closely resemble to XEN cells. These cells, which we designated canine induced XEN (ciXEN)-like cells, were induced from canine embryonic fibroblasts by introducing four transgenes. ciXEN-like cells expressed XEN markers, which could be maintained over 50 passages in N2B27 medium supplemented with inhibitors of mitogen-activated protein kinase p38 and transforming growth factor-beta 1. Our ciXEN-like cells were maintained without transgene expression and exhibited upregulated expression of VE and PE markers in feeder-free conditions. The cells differentiated from ciXEN-like cells using a coculture system showed multiple nuclei and expressed albumin protein, similar to characteristics of hepatocytes. Furthermore, these cells expressed the adult hepatocyte marker, CYP3A4. Interestingly, these cells also formed a net structure expressing the bile epithelium capillary marker, multidrug resistance-associated protein 2. Thus, we have demonstrated the induction of a new canine stem cell line, ciXEN-like cells, which could form an embryonic endodermal cell layer. Our ciXEN-like cells may be a helpful tool to study the canine embryo development and represent a promising cell source for proceeding human and canine regenerative medicine.
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Affiliation(s)
- Toshiya Nishimura
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | - Naoya Unezaki
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | - Ryoji Kanegi
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | | | - Shingo Hatoya
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | - Kikuya Sugiura
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | - Noritoshi Kawate
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | - Hiromichi Tamada
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
| | - Hiroshi Imai
- 2 Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University , Kyoto, Japan
| | - Toshio Inaba
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Osaka, Japan
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18
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Yoshida K, Ohta Y, Kawate N, Takahashi M, Inaba T, Hatoya S, Morii H, Takahashi K, Ito M, Tamada H. Long-term feeding of hydroalcoholic extract powder of Lepidium meyenii (maca) enhances the steroidogenic ability of Leydig cells to alleviate its decline with ageing in male rats. Andrologia 2017; 50. [PMID: 28295471 DOI: 10.1111/and.12803] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2016] [Indexed: 12/31/2022] Open
Abstract
This study examined whether feeding hydroalcoholic extract of Lepidium meyenii (maca) to 8-week-old (sexually maturing) or 18-week-old (mature) male rats for more than a half year affects serum testosterone concentration and testosterone production by Leydig cells cultured with hCG, 22R-hydroxycholesterol or pregnenolone. Testosterone concentration was determined in the serum samples obtained before and 6, 12, 18 and 24 weeks after the feeding, and it was significantly increased only at the 6 weeks in the group fed with the maca extract to maturing rats when it was compared with controls. Testosterone production by Leydig cells significantly increased when cultured with hCG by feeding the maca extract to maturing rats for 27 weeks (35 weeks of age) and when cultured with 22R-hydroxycholesterol by feeding it to mature rats for 30 weeks (48 weeks of age). Overall testosterone production by cultured Leydig cells decreased to about a half from 35 to 48 weeks of age. These results suggest that feeding the maca extract for a long time to male rats may enhance the steroidogenic ability of Leydig cells to alleviate its decline with ageing, whereas it may cause only a transient increase in blood testosterone concentration in sexually maturing male rats.
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Affiliation(s)
- K Yoshida
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Y Ohta
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - N Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - M Takahashi
- Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - T Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - S Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - H Morii
- Towa Corporation, Tokyo, Japan
| | | | - M Ito
- Towa Corporation, Tokyo, Japan
| | - H Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
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19
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Ohta Y, Kawate N, Inaba T, Morii H, Takahashi K, Tamada H. Feeding hydroalcoholic extract powder ofLepidium meyenii(maca) enhances testicular gene expression of 3β-hydroxysteroid dehydrogenase in rats. Andrologia 2017; 49. [DOI: 10.1111/and.12792] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 11/28/2022] Open
Affiliation(s)
- Y. Ohta
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - N. Kawate
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - T. Inaba
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - H. Morii
- Towa Corporation; Shinjuku-ku Tokyo Japan
| | | | - H. Tamada
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
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20
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Ogawa E, Kawate N, Inaba T, Tamada H. Testicular gene expression of steroidogenesis-related factors in prepubertal, postpubertal, and aging dogs. Theriogenology 2017; 90:42-48. [DOI: 10.1016/j.theriogenology.2016.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 11/04/2016] [Accepted: 11/05/2016] [Indexed: 10/20/2022]
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21
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Hannan MA, Kawate N, Fukami Y, Weerakoon WWPN, Büllesbach EE, Inaba T, Tamada H. Changes of plasma concentrations of insulin-like peptide 3 and testosterone, and their association with scrotal circumference during pubertal development in male goats. Theriogenology 2017; 92:51-56. [PMID: 28237342 DOI: 10.1016/j.theriogenology.2017.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 12/05/2016] [Accepted: 01/04/2017] [Indexed: 11/15/2022]
Abstract
Insulin-like peptide 3 (INSL3) has been used as a testis-specific biomarker for puberty in several species, but the secretory profile of INSL3 during pubertal development in small ruminants is unknown. Here we sought to determine the age-related changes in the plasma concentrations of INSL3 and testosterone and their association with scrotal circumference during pubertal development in five male Shiba goats. Blood samples and scrotal circumference measurement were taken every 2 weeks from week 10 to week 52 of each goat's lifespan. Based on the changes in scrotal circumference, data were grouped into early pubertal (10-22 weeks), late pubertal (22-34 weeks) and post-pubertal (34-52 weeks) categories. The plasma concentrations of testosterone and luteinizing hormone (LH) were measured by enzyme-immunoassays (EIAs), and we used a time-resolved fluorescence immunoassay (TRFIA) to measure plasma INSL3. The biweekly sampling showed that the plasma INSL3 secretions maintained a moderate increase during and after puberty, whereas the plasma testosterone secretions fluctuated over the same period. The comparison of the three age categories revealed a significant increase (p < 0.01) in the mean plasma INSL3 concentrations during the late and post-pubertal periods compared to the early pubertal period. There was no difference in the mean plasma testosterone concentrations between the early and late pubertal periods, but a significant increase (p < 0.01) was observed during the post-pubertal period compared to early and late pubertal periods. The mean plasma LH concentrations increased significantly (p < 0.05) from the early pubertal to late pubertal and from the late pubertal to post-pubertal periods. A significant increase (p < 0.05) in the mean scrotal circumference from the early pubertal to late pubertal and from the late pubertal to post-pubertal periods was observed. The R2 value of the best regression curves between scrotal circumference and INSL3 (0.513; p < 0.001) was higher than that between scrotal circumference and testosterone (0.162; p < 0.01) from 10 to 52 weeks of age. In conclusion, in male goats, plasma concentrations of INSL3 increased continuously during and after puberty, whereas testosterone secretions were fluctuated. The scrotal circumference was more highly correlated with the INSL3 concentrations than with testosterone, implying that INSL3 is superior as a biomarker of testicular total Leydig cell volume.
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Affiliation(s)
- M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - N Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
| | - Y Fukami
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - W W P N Weerakoon
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - E E Büllesbach
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA
| | - T Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - H Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
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Kibushi M, Kawate N, Kaminogo Y, Hannan M, Weerakoon W, Sakase M, Fukushima M, Seyama T, Inaba T, Tamada H. Fetal gender prediction based on maternal plasma testosterone and insulin-like peptide 3 concentrations at midgestation and late gestation in cattle. Theriogenology 2016; 86:1764-73. [DOI: 10.1016/j.theriogenology.2016.05.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/26/2016] [Accepted: 05/27/2016] [Indexed: 11/25/2022]
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Hannan MA, Kawate N, Fukami Y, Weerakoon WWPN, Büllesbach EE, Inaba T, Tamada H. Effects of long-acting GnRH antagonist, degarelix acetate, on plasma insulin-like peptide 3, testosterone and luteinizing hormone concentrations, and scrotal circumference in male goats. Theriogenology 2016; 88:228-235. [PMID: 27793455 DOI: 10.1016/j.theriogenology.2016.09.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/14/2016] [Accepted: 09/10/2016] [Indexed: 10/21/2022]
Abstract
We recently reported that plasma insulin-like peptide 3 (INSL3) concentrations increased soon after endogenous and exogenous stimulations of LH in male goats and bulls. However, the effects of LH suppression on INSL3 secretion are unknown in domestic animals. Here, we examined the effects of a long-acting GnRH antagonist (degarelix acetate; 4 mg/kg) on the secretions of plasma INSL3 and testosterone in two phases, an immediate and a long-term phase in male goats (n = 6; aged, 13-16 months). During the immediate phase, blood was taken at 15-minute intervals for 8 hours on Days -5, 0, and 3. The GnRH antagonist was administered after 2-hour sampling of Day 0. Moreover, a daily blood sample was taken from Day 0 to Day 7, followed by twice a week until 9 weeks and finally at week 10. The scrotal circumference was recorded before treatment and continued biweekly until week 10. Concentrations of LH, INSL3, and testosterone in plasma were determined by EIA and the pulsatile nature of secretion analyzed using pulse XP software. The mean concentrations, pulse frequency (per hour), and pulse amplitude (peak-nadir) of plasma LH and testosterone reduced from pretreatment to posttreatment Day 0 and Day 3 (P < 0.05). A decline in mean concentrations, pulse frequency, and pulse amplitude of INSL3 was exhibited on posttreatment Day 3 compared with pretreatment (P < 0.01). During long-term sampling, a decline (P < 0.01) in plasma testosterone and INSL3 concentrations was observed 1 day after treatment and remained lower until 8.5 weeks after treatment, and thereafter returned to pretreatment levels. A reduction in scrotal circumference was recorded 4 weeks after treatment and remained lower until 10 weeks after treatment (P < 0.05). In conclusion, the acute regulation of INSL3 by LH was confirmed by reduction of plasma INSL3 levels within 3 days after GnRH antagonist treatment in male goats. Although the onset of suppression of testosterone was more rapid than that of INSL3, the low levels persisted for 8.5 weeks for both hormones, and subsequently the concentrations returned to pretreatment levels. A significant reduction in testicular size was also observed. The quick, long-lasting, and transient suppression of testosterone and INSL3 after a single injection implies a potential application of this antagonist in reversible long-term chemical castration in male goats.
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Affiliation(s)
- M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - N Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
| | - Y Fukami
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - W W P N Weerakoon
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - E E Büllesbach
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - T Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - H Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
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Abstract
Although zearalenone (ZEN; Sigma Chemicals, St Louis, Missouri) is a well-known mycotoxin with estrogenic activity, the toxic effects of ZEN during pregnancy are unknown. This study compared the effects of daily subcutaneous injections of ZEN (2, 4, or 8 mg/kg) with those of 17β-estradiol (E2; [Sigma Chemicals] 0.8, 1.6, or 3.2 μg/kg) in mice. Injections were administered on gestational days (GDs) 1 to 5, the period including implantation which is sensitive to hormonal balance. The effects of ZEN or E2 were evaluated by comparing the number of live fetuses, their weight, and absorbed conceptuses on GD 18, with those in vehicle-treated controls. In addition, implantation, embryos in the oviducts and those in uteri without implantation sites were investigated on GD 5. In mice treated with the highest dose of ZEN or E2, decidual responses and plasma progesterone concentrations were measured on GDs 5 and 6, respectively, and delayed implantation was investigated on GDs 9 and 14. The results showed that treatment with ZEN, in a manner similar to that seen for E2, led to obstruction of essential processes for establishing and maintaining pregnancy, such as embryo migration from oviducts to uteri, the decidual response, and activation of luteal function. Zearalenone also induced delayed implantation and loss of conceptuses and at low doses caused a retarded growth of the fetuses after normal implantation. It was therefore concluded that ZEN causes multiple estrogenic toxic actions when administered during early pregnancy in mice.
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Affiliation(s)
- Kohji Kunishige
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Noritoshi Kawate
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Toshio Inaba
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Hiromichi Tamada
- 1 Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
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25
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Kanegi R, Hatoya S, Tsujimoto Y, Takenaka S, Nishimura T, Wijewardana V, Sugiura K, Takahashi M, Kawate N, Tamada H, Inaba T. Production of feline leukemia inhibitory factor with biological activity in Escherichia coli. Theriogenology 2016; 86:604-11. [DOI: 10.1016/j.theriogenology.2016.02.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 02/11/2016] [Accepted: 02/17/2016] [Indexed: 11/16/2022]
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26
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Tamada H, Adachi N, Kawate N, Inaba T, Hatoya S, Sawada T. Positive correlation between patency and mRNA levels for cyclooxygenase-2 and prostaglandin E synthase in the uterine cervix of bitches with pyometra. J Vet Med Sci 2015; 78:525-8. [PMID: 26596635 PMCID: PMC4829531 DOI: 10.1292/jvms.15-0520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Factors involved in patency of uterine cervices in the bitch with pyometra remain to be clarified. This study examined relationship between patency and mRNA levels for inducible nitric oxide synthase (iNOS), cyclooxygenase (COX)-1, COX-2 and prostaglandin E synthase (PGES) in the uterine cervix of bitches with pyometra. Cervical patency was measured by inserting the stainless steel rods with different diameter into cervical canals. Levels of mRNA expression were determined by semi-quantitative reverse transcription-polymerase chain reaction. The cervical patency was positively correlated with mRNA levels for COX-2 and PGES, but not those for iNOS and COX-1. The results suggest that gene expression of COX-2 and PGES may be involved in the regulation of patency in the uterine cervix of bitches with pyometra.
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Affiliation(s)
- Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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Tamada H, Takemoto K, Tominaga M, Kawate N, Takahashi M, Hatoya S, Matsuyama S, Inaba T, Sawada T. Expression and localization of epidermal growth factor, transforming growth factor-α and epidermal growth factor receptor in the canine testis. J Reprod Dev 2015; 62:59-64. [PMID: 26498203 PMCID: PMC4768112 DOI: 10.1262/jrd.2015-079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Gene expression of epidermal growth factor (EGF), transforming growth factor-α (TGF-α) and EGF receptor
(EGF-R) and the localization of the corresponding proteins in the canine testis were studied. Levels of mRNA
expressions were determined by semiquantitative reverse transcription polymerase chain reaction in the testes
of the peripubertal (4–6 months), young adult (3–4 years), advanced adult (7–8 years) and senescent (11–16
years) groups. The EGF-R mRNA level in the testes of the peripubertal group was significantly higher than
those in the other groups, whereas there was no difference in EGF and TGF-α mRNA levels among groups.
Immunohistochemical stainings for EGF, TGF-α and EGF-R in the testis revealed that immunoreactivity in the
seminiferous epithelium and Sertoli cell was weak and nonspecific for the stage of spermatogenesis, and
distinct staining was found in Leydig cells. These results suggest that the EGF family of growth factors may
be involved in testicular maturation and function in the dog.
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Affiliation(s)
- Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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Hannan M, Kawate N, Kubo Y, Pathirana I, Büllesbach E, Hatoya S, Inaba T, Takahashi M, Tamada H. Expression analyses of insulin-like peptide 3, RXFP2, LH receptor, and 3β-hydroxysteroid dehydrogenase in testes of normal and cryptorchid dogs. Theriogenology 2015. [DOI: 10.1016/j.theriogenology.2015.06.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hannan MA, Fukami Y, Kawate N, Sakase M, Fukushima M, Pathirana IN, Büllesbach EE, Inaba T, Tamada H. Plasma insulin-like peptide 3 concentrations are acutely regulated by luteinizing hormone in pubertal Japanese Black beef bulls. Theriogenology 2015; 84:1530-5. [PMID: 26318230 DOI: 10.1016/j.theriogenology.2015.07.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/29/2015] [Accepted: 07/30/2015] [Indexed: 10/23/2022]
Abstract
Insulin-like peptide 3 (INSL3) is a major secretory product of testicular Leydig cells. The mechanism of acute regulation of INSL3 secretion is still unknown. The present study was undertaken in pubertal beef bulls to (1) determine the temporal relationship of pulsatile secretion among LH, INSL3, and testosterone and (2) monitor acute regulation of INSL3 secretion by LH using GnRH analogue and hCG. Blood samples were collected from Japanese Black beef bulls (N = 6) at 15-minute intervals for 8 hours. Moreover, blood samples were collected at -0.5, 0, 1, 2, 3, 4, 5, and 6 hours after GnRH treatment and -0.5, 0, 2, 4, and 8 hours on the day of treatment (Day 0), and Days 1, 2, 4, 8, and 12 after hCG treatment. Concentrations of LH, INSL3, and testosterone determined by EIAs indicated that secretion in the general circulation was pulsatile. The frequency of LH, INSL3, and testosterone pulses was 4.7 ± 0.9, 3.8 ± 0.2, and 1.0 ± 0.0, respectively, during the 8-hour period. Seventy percent of these INSL3 pulses peaked within 1 hour after a peak of an LH pulse had occurred. The mean increase (peak per basal concentration) of testosterone pulses was higher (P < 0.001) than that of INSL3 pulses. After GnRH treatment, LH concentrations increased (P < 0.01) dramatically 1 hour after treatment and remained high (P < 0.05) until the end of sampling, whereas an elevated (P < 0.05) INSL3 concentration occurred at 1, 2, 5, and 6 hours after treatment. Testosterone concentrations increased (P < 0.01) 1 hour after the treatment and remained high until the end of sampling. After hCG treatment, an increase of INSL3 concentration occurred at 2 and 4 hours, and Days 2, 4, and 8 after treatment (P < 0.05), whereas in case of testosterone, concentrations remained high (P < 0.01) until Day 8 after treatment. The increase (maximum per pretreatment concentration) of INSL3 concentrations after injecting GnRH or hCG was much lower (P < 0.001) than that of testosterone. In conclusion, secretion of INSL3 in blood of bulls occurred in a pulsatile manner. We inferred an acute regulation of INSL3 by LH in bulls because INSL3 concentrations increased immediately after endogenous and exogenous LH stimulation. The increase of INSL3 concentrations by LH was much lower than that of testosterone in bulls.
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Affiliation(s)
- M A Hannan
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - Y Fukami
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - N Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
| | - M Sakase
- Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Wadayama, Hyogo, Japan
| | - M Fukushima
- Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Wadayama, Hyogo, Japan
| | - I N Pathirana
- Department of Animal Science, Faculty of Agriculture, University of Ruhuna, Kamburupitiya, Sri Lanka
| | - E E Büllesbach
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - T Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - H Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
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Ohta Y, Yoshida K, Kamiya S, Kawate N, Takahashi M, Inaba T, Hatoya S, Morii H, Takahashi K, Ito M, Ogawa H, Tamada H. Feeding hydroalcoholic extract powder ofLepidium meyenii(maca) increases serum testosterone concentration and enhances steroidogenic ability of Leydig cells in male rats. Andrologia 2015; 48:347-54. [DOI: 10.1111/and.12453] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2015] [Indexed: 11/27/2022] Open
Affiliation(s)
- Y. Ohta
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - K. Yoshida
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - S. Kamiya
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - N. Kawate
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - M. Takahashi
- Cooperative Department of Veterinary Medicine; Faculty of Agriculture; Iwate University; Morioka Japan
| | - T. Inaba
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - S. Hatoya
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
| | - H. Morii
- Towa Corporation; Shinjuku-ku Tokyo Japan
| | | | - M. Ito
- Towa Corporation; Shinjuku-ku Tokyo Japan
| | - H. Ogawa
- Faculty of Human Sciences; Tezukayama Gakuin University; Harumidai; Sakai City Osaka Japan
| | - H. Tamada
- Department of Advanced Pathobiology; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Osaka Japan
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Takahashi M, Tsuchiya H, Hamano S, Inaba T, Kawate N, Tamada H. Clinical study report on milk production in the offspring of a somatic cell cloned Holstein cow. J Reprod Dev 2013; 59:595-8. [PMID: 23955271 PMCID: PMC3934143 DOI: 10.1262/jrd.2013-025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study examined two female offspring of a somatic cell cloned Holstein cow
that had reproduction problems and milk production performance issues. The two
offspring heifers, which showed healthy appearances and normal reproductive
characteristics, calved on two separate occasions. The mean milk yields of the
heifers in the first lactation period were 9,037 kg and 7,228 kg. The relative
mean milk yields of these cows were 111.2% and 88.9%, respectively, when
compared with that of the control group. No particular clinical abnormalities
were revealed in milk yields and milk composition rate [e.g., fat, protein and
solids-not-fat (SNF)], and reproductive characteristics of the offspring of the
somatic cell cloned Holstein cow suggested that the cloned offspring had normal
milk production.
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Affiliation(s)
- Masahiro Takahashi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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Takahashi M, Sawada K, Kawate N, Inaba T, Tamada H. Improvement of superovulatory response and pregnancy rate after transfer of embryos recovered from Japanese Black cows fed rumen bypass polyunsaturated fatty acids. J Vet Med Sci 2013; 75:1485-90. [PMID: 23877792 PMCID: PMC3942974 DOI: 10.1292/jvms.12-0235] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Feeding rumen bypass polyunsaturated fatty acids (PUFA) affects to Japanese Black cows affects their reproduction, though its influence on superovulatory response in donor cows and conception in recipient cattle has not been well studied. Here, we investigated the effects of feeding PUFA to Japanese Black cows on blood biochemistry, the numbers of ova and embryos or transferable embryos and pregnancy rate following embryo transfer (ET) to recipient Holstein heifers. PUFA (40% linoleic acid) was fed at 300 g/day in the experimental group from the last day of estrus until the day of artificial insemination for superovulatory treatment. Blood was collected on the first day of follicle-stimulating hormone administration. Total cholesterol level was significantly higher in the 15- to 19-day feeding group (117.4 mg/dl) than in the control group (95.0 mg/dl). The numbers of ova and embryos or transferable embryos were significantly higher in the 15- to 19-day feeding group than in the control group. The numbers of transferable embryos in the 15- to 19-day feeding group were significantly higher than in the 10- to 14-day feeding group. The pregnancy rate at day 60 was significantly higher in the experimental group (66.7 and 57.1%) than in the control group (51.1 and 44.0%) after transfer of fresh and frozen-thawed embryos, respectively. In conclusion, the numbers of ova and embryos or transferable embryos after superovulatory treatment increased, and the pregnancy rate after ET was higher in Japanese Black cows fed PUFA than in the control group.
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Affiliation(s)
- Masahiro Takahashi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
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33
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Nishimura T, Hatoya S, Kanegi R, Sugiura K, Wijewardana V, Kuwamura M, Tanaka M, Yamate J, Izawa T, Takahashi M, Kawate N, Tamada H, Imai H, Inaba T. Generation of functional platelets from canine induced pluripotent stem cells. Stem Cells Dev 2013; 22:2026-35. [PMID: 23409943 DOI: 10.1089/scd.2012.0701] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Thrombocytopenia (TTP) is a blood disease common to canines and human beings. Currently, there is no valid therapy for this disease except blood transfusion. In this study, we report the generation of canine induced pluripotent stem cells (ciPSCs) from canine embryonic fibroblasts, and a novel protocol for creating mature megakaryocytes (MKs) and functional platelets from ciPSCs. The ciPSCs were generated using lentiviral vectors, and differentiated into MKs and platelets on OP9 stromal cells supplemented with growth factors. Our ciPSCs presented in a tightly domed shape and showed expression of a critical pluripotency marker, REX1, and normal karyotype. Additionally, ciPSCs differentiated into cells derived from three germ layers via the formation of an embryoid body. The MKs derived from ciPSCs had hyperploidy and transformed into proplatelets. The proplatelets released platelets early on that expressed specific MK and platelet marker CD41/61. Interestingly, these platelets, when activated with adenosine diphosphate or thrombin, bind to fibrinogen. Moreover, electron microscopy showed that the platelets had the same ultrastructure as peripheral platelets. Thus, we have demonstrated for the first time the generation of ciPSCs that are capable of differentiating into MKs and release functional platelets in vitro. Our system for differentiating ciPSCs into MKs and platelets promises a critical therapy for canine TTP and appears to be extensible in principle to resolve human TTP.
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Affiliation(s)
- Toshiya Nishimura
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
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Pathirana IN, Kawate N, Büllesbach EE, Takahashi M, Hatoya S, Inaba T, Tamada H. Insulin-like peptide 3 stimulates testosterone secretion in mouse Leydig cells via cAMP pathway. ACTA ACUST UNITED AC 2012; 178:102-6. [PMID: 22800961 DOI: 10.1016/j.regpep.2012.07.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 05/30/2012] [Accepted: 07/06/2012] [Indexed: 10/28/2022]
Abstract
Testicular Leydig cells secrete insulin-like peptide 3 (INSL3) and express its receptor, RXFP2. However, the effects of INSL3 on endocrine function of Leydig cells are unknown. The present study examines the effects of INSL3 on mouse Leydig cells taking testosterone and cAMP secretions as endpoints. Leydig cells were isolated from testicular interstitial cells obtained from 8-week-old male mice. Cells were then plated in the presence or absence of mouse, human, canine or bovine INSL3 (0-100 ng/ml) for 18 h in multiwell-plates (96 wells) in different cell densities (2500, 5000, 10,000 or 20,000 cells per well). The effects of bovine INSL3 (100 ng/ml) on testosterone secretion by Leydig cells were examined in the presence or absence of, an adenylate cyclase inhibitor, SQ 22536 (1μM) or INSL3 antagonist (bovine and human; 100 ng/ml). Testosterone and cAMP in spent medium were measured by enzyme immunoassay. All INSL3 species tested significantly stimulated the testosterone secretion in Leydig cells, and the maximum stimulation was observed with 100 ng/ml bovine INSL3 at the lowest Leydig cell density (2500 cells per well). Moreover, bovine INSL3 (100 ng/ml) significantly stimulated the cAMP production from Leydig cells maximally at 1h, and remained significantly elevated even at 18 h. SQ 22536 and INSL3 antagonists (bovine and human) significantly reduced INSL3-stimulated testosterone secretion from Leydig cells. Taken together, stimulatory effects of INSL3 on testosterone secretion in Leydig cells are exerted via the activation of cAMP, suggesting a new autocrine function of INSL3 in males.
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Affiliation(s)
- Indunil N Pathirana
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
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Nakama K, Akune A, Kawate N, Takahashi M, Inaba T, Sameshima H, Tamada H. Delay of ovulation due to diets containing levonorgestrel in cynomolgus monkeys (Macaca fascicularis). J Vet Med Sci 2012; 74:1453-60. [PMID: 22785380 DOI: 10.1292/jvms.12-0023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study was undertaken to develop a simple and practical method to control the time of ovulation in cynomolgus monkeys. Diets containing a synthetic gestagen, levonorgestrel (LNG) were given daily to normally cycling female monkeys for 2 weeks, and plasma concentrations of estradiol-17β and progesterone were determined by EIA in order to estimate the time of ovulation. Doses of LNG (0, 3.2, 8, 20, 50, or 125 μg) were given from Day 2 (Day 0 =the first day of menstruation) through Day 15. The numbers of days from the last administration of LNG to the estimated ovulation in the groups treated with LNG at 20 μg and above were significantly greater than those in the controls, and the values in the group treated with LNG at 50 μg were within a narrow range. In a second experiment, LNG was administered at 50 μg in different phases of the menstrual cycle (Days 9-22, 16-29, and 23-36), and the results indicated that ovulation occurred more than 12 days after the last administration in all monkeys, and the number of days from the last administration of LNG to the estimated ovulation in the group treated on Days 16-29 (luteal phase) was significantly greater than that in the group treated on Days 23-36. These results indicate that daily provision of a diet containing 50 μg LNG could be applicable for delaying ovulation, and suggest that the total level of (exogenous and endogenous) progestins is critical for determining the length of ovulation delay in cynomolgus monkeys.
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Affiliation(s)
- Kazuhiro Nakama
- Drug Safety Research Laboratories, Shin Nippon Biomedical Laboratories, Ltd, Kagoshima, Japan
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Tamada H, Kawata N, Kawate N, Inaba T, Kida K, Hatoya S, Akune A, Nakama K, Kohsaka T, Takahashi M, Sawada T. Factors associated with patency of the uterine cervix in bitches with pyometra. Res Vet Sci 2012; 93:1203-10. [PMID: 22727196 DOI: 10.1016/j.rvsc.2012.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 05/17/2012] [Accepted: 05/27/2012] [Indexed: 11/29/2022]
Abstract
This study examined factors involved in the patency of uterine cervices in the bitch with pyometra. The uterine cervices were obtained from the bitches with pyometra at the time of ovariohysterectomy. Cervical patency was measured by inserting the stainless steel rods with different diameter into cervical canals. Collagen concentration and collagenase activity (for type I collagen) in the tissue were determined and the number of neutrophils, which contain the enzymes related to collagen metabolism, and morphological changes in collagenous fibers were studied by histological examination. Levels of mRNA expressions for hormonal factors, estrogen receptor-α (ER-α), progesterone receptor (PR), relaxin (Rlx) and an attractant of neutrophils, interleukin-8 (IL-8), were determined by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR). In the statistical analysis, the cervical patency positively correlated with the collagenase activity, and negative correlation was found between the cervical patency and collagen concentration. Histological examination indicated distinct positive correlation between the cervical patency and the number of neutrophils in the cervical stroma and that the collagenous fiber in the uterine cervix became thinner and degraded with increase of the cervical patency. Although there was no relationship between the cervical patency and the level of mRNA for ER-α, PR or Rlx, IL-8 mRNA level has significant positive correlation with the cervical patency and the number of neutrophils in the cervical stroma. These results suggest that the increased number of neutrophils in the uterine cervix, which could be related to the local expression of IL-8, may be involved in collagen degradation and connective tissue remodeling to increase cervical patency in the bitch with pyometra.
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Affiliation(s)
- Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan.
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Pathirana I, Yamasaki H, Kawate N, Tsuji M, Büllesbach E, Takahashi M, Hatoya S, Inaba T, Tamada H. Plasma insulin-like peptide 3 and testosterone concentrations in male dogs: Changes with age and effects of cryptorchidism. Theriogenology 2012; 77:550-7. [DOI: 10.1016/j.theriogenology.2011.08.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 08/09/2011] [Accepted: 08/24/2011] [Indexed: 11/26/2022]
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Kawate N, Ohnari A, Pathirana I, Sakase M, Büllesbach E, Takahashi M, Inaba T, Tamada H. Changes in plasma concentrations of insulin-like peptide 3 and testosterone from birth to pubertal age in beef bulls. Theriogenology 2011; 76:1632-8. [DOI: 10.1016/j.theriogenology.2011.07.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 07/01/2011] [Accepted: 07/01/2011] [Indexed: 11/16/2022]
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Pathirana IN, Kawate N, Tsuji M, Takahashi M, Hatoya S, Inaba T, Tamada H. In vitro effects of estradiol-17β, monobutyl phthalate and mono-(2-ethylhexyl) phthalate on the secretion of testosterone and insulin-like peptide 3 by interstitial cells of scrotal and retained testes in dogs. Theriogenology 2011; 76:1227-33. [PMID: 21752447 DOI: 10.1016/j.theriogenology.2011.05.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 05/14/2011] [Accepted: 05/14/2011] [Indexed: 11/29/2022]
Abstract
The objective was to determine the effects of estradiol-17β, monobutyl phthalate (MBP) and mono-(2-ethylhexyl) phthalate (MEHP) on testosterone and insulin-like peptide 3 (INSL3) secretions in cultured testicular interstitial cells isolated (enzymatic dispersion) from scrotal and retained testes of small-breed dogs. Suspension cultures were treated with estradiol-17β (0, 10, and 100 ng/mL), MBP (0, 0.8, and 8 mmol/L) or MEHP (0, 0.2, and 0.8 mmol/L) for 18 h, in the presence or absence of 0.1 IU/mL hCG. Testosterone (both basal and hCG-induced) and INSL3 (basal) concentrations were measured in spent medium. Effects of estradiol-17β, MBP, and MEHP on testosterone and INSL3 secretions were not affected (P > 0.15) by cell source (scrotal versus retained testis); therefore, data were combined and analyzed, and outcomes reported as percentage relative to the control. In testicular interstitial cells, basal testosterone secretion was increased (P < 0.01) by 100 ng/mL estradiol-17β (130.2 ± 10.6% of control). Among phthalates, 0.2 and 0.8 mmol/L MEHP stimulated (P < 0.01) basal testosterone secretion (135.5 ± 8.3% and 154.6 ± 12.9%, respectively). However, hCG-induced testosterone secretion was inhibited (P < 0.01) by 8 mmol/L MBP (67.7 ± 6.0%), and tended to be inhibited (P = 0.056) by 0.8 mmol/L MEHP (84.5 ± 5.6%). Basal INSL3 secretion was inhibited (P < 0.01) by 8 mmol/L MBP (73.6 ± 6.8%) and 0.8 mmol/L MEHP (76.9 ± 11.3%). In conclusion, we inferred that estradiol-17β and certain phthalate monoesters had direct effects on secretions of testosterone and INSL3 in canine testicular interstitial cells, with no significant difference between scrotal and retained testes.
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Affiliation(s)
- I N Pathirana
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
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Ohmura M, Torii R, Hatoya S, Sugiura K, Tamada H, Kawate N, Takahashi M, Sawada T, Inaba T. Induction of fertile oestrus in dioestrous bitches using prostaglandin F2α and a GnRH agonist. Vet Rec 2011; 168:669. [PMID: 21652660 DOI: 10.1136/vr.d1183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- M Ohmura
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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Pathirana IN, Tanaka K, Kawate N, Tsuji M, Hatoya S, Inaba T, Tamada H. Homozygosity of single nucleotide polymorphisms in the 3' region of the canine estrogen receptor 1 gene is greater in Toy Poodles than in Miniature Dachshunds and Chihuahuas. Anim Sci J 2011; 82:390-5. [PMID: 21615831 DOI: 10.1111/j.1740-0929.2010.00864.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Differences in the distribution of single nucleotide polymorphisms (SNPs) and haplotypes in the estrogen receptor α gene (ESR1) were examined in Miniature Dachshunds (n = 48), Chihuahuas (n = 20) and Toy Poodles (n = 18). Five DNA fragments located in the 40-kb region at the 3' end of ESR1 were amplified by polymerase chain reaction and were directly sequenced. We compared allele, genotype and estimated haplotype frequencies at each SNP in the 3' end of ESR1 for these three breeds of small dog. The frequency of the major allele and the genotype frequency of the major allele homozygotes, were significantly higher in Toy Poodles for five SNPs (SNP #5, #14-17) than in Miniature Dachshunds, and significantly higher in Toy Poodles than Chihuahuas for three SNPs (SNP #15-17). A common haplotype block was identified in an approximately 20-kb region encompassing four SNPs (SNPs # 14-17). The frequencies of the most abundant estimated haplotype (GTTG) and GTTG homozygotes were significantly higher in Toy Poodles than in the other two breeds. These results imply that homozygosity for the allele, genotype and haplotype distribution within the block at the 3' end of ESR1 is greater in Toy Poodles than in Miniature Dachshunds and Chihuahuas.
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Affiliation(s)
- Indunil N Pathirana
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
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Pathirana IN, Ashida Y, Kawate N, Tanaka K, Tsuji M, Takahashi M, Hatoya S, Inaba T, Tamada H. Comparison of testosterone and insulin-like peptide 3 secretions in response to human chorionic gonadotropin in cultured interstitial cells from scrotal and retained testes in dogs. Anim Reprod Sci 2011; 124:138-44. [DOI: 10.1016/j.anireprosci.2011.02.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 02/03/2011] [Accepted: 02/09/2011] [Indexed: 10/18/2022]
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Kawate N, Watanabe K, Uenaka K, Takahashi M, Inaba T, Tamada H. Comparison of plasma concentrations of estradiol-17β and progesterone, and conception in dairy cows with cystic ovarian diseases between Ovsynch and Ovsynch plus CIDR timed AI protocols. J Reprod Dev 2011; 57:267-72. [PMID: 21242655 DOI: 10.1262/jrd.10-066t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The objectives of this study were 1) to determine the effects of adding a CIDR to the Ovsynch protocol on plasma concentrations of estradiol-17β and progesterone and conception in dairy cows with cystic ovarian diseases and 2) to examine associations among the estradiol-17β and progesterone concentrations and conception. Cows were diagnosed as having cystic ovarian diseases if they were found to have a cystic follicle (diameter ≥25 mm) without a corpus luteum by two palpations per rectum with an interval for 7 to 14 days. They were treated with either the Ovsynch (GnRH on Day 0, PGF(2α) on Day 7 and GnRH on Day 9, with AI on Day 10; n=15) or Ovsynch+CIDR protocol (Ovsynch protocol plus a CIDR from Day 0 to Day 7; n=23). Plasma estradiol-17β concentrations were determined on Days 0, 7 and 9, and plasma progesterone concentrations were determined on Days 0, 7, 9 and 17. The plasma estradiol-17β and progesterone concentrations at all of the days examined and conception rates did not differ significantly between the two timed AI protocols. The progesterone concentrations on Day 17 and conception rates were lower (P<0.05) for cows with low concentrations of estradiol-17β (<2 pg/ml) on Day 9 than for cows with high concentrations of estradiol-17β (≥2 pg/ml). The present study suggests that, in dairy cows with cystic ovarian diseases, addition of a CIDR to the Ovsynch protocol had no remarkable effects on plasma estradiol-17β and progesterone concentrations during and after the treatments or on conception after timed AI. This study indicates that the low plasma estradiol-17β concentration at the second administration of GnRH in the protocols can be a predictor for impaired luteal formation and lower likelihood of pregnancy in dairy cows with cystic ovarian diseases.
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Affiliation(s)
- Noritoshi Kawate
- Department of Advanced Pathobiology, Osaka Prefecture University, Osaka, Japan.
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Tamada H, Kawate N, Kawata N, Inaba T, Kida K, Hatoya S, Akune A, Nakama K, Kohsaka T, Sawada T. Detection of relaxin mRNA in the corpus luteum, uterus, and uterine cervix in the bitch. J Vet Med Sci 2010; 72:1383-6. [PMID: 20495299 DOI: 10.1292/jvms.09-0485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In the pregnant bitch, the placenta is a major source of circulating relaxin, but its local expression in the reproductive organs is not clear. This study demonstrated expression of relaxin mRNA in the corpus luteum, uterus, uterine cervix as well as placenta in the pregnant and nonpregnant bitch by reverse transcriptase-polymerase chain reaction (RT-PCR).
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Affiliation(s)
- Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
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Pathirana IN, Tanaka K, Kawate N, Tsuji M, Kida K, Hatoya S, Inaba T, Tamada H. Analysis of single nucleotide polymorphisms in the 3' region of the estrogen receptor 1 gene in normal and cryptorchid Miniature Dachshunds and Chihuahuas. J Reprod Dev 2010; 56:405-10. [PMID: 20453437 DOI: 10.1262/jrd.09-195t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study was performed to examine the distribution of single nucleotide polymorphisms (SNPs) and estimated haplotypes in the canine estrogen receptor (ER) alpha gene (ESR1) and the association of them with different phenotypes of cryptorchidism (CO) in Miniature Dachshunds and Chihuahuas. Forty CO and 68 normal dogs were used, and CO was classified into unilateral (UCO; n=33) and bilateral CO (BCO; n=5) or into abdominal (ACO; n=16) and inguinal CO (ICO; n=22). Thirteen DNA fragments located in the 70-kb region at the 3' end of ESR1 were amplified by PCR and sequenced to examine 13 SNPs (#1-#13) reported in a canine SNP database. Ten SNPs (#1-#4, #7, #8, #10-#13) were not polymorphic, and 5 new SNPs (#14-#18) were discovered. A common haplotype block in normal, CO and CO phenotypes was identified for an approximately 20-kb region encompassing 4 SNPs (#14-#17). Allele, genotype and haplotype frequencies in CO without classification by phenotype and also in UCO, ACO and ICO phenotypes were not statistically different from the normal group. Significant differences in genotype frequencies and homozygosity for the estimated GTTG haplotype within the block were observed in BCO compared with the normal group, although the number of BCO animals was small. Our results demonstrate that the examined SNPs and haplotypes in the 3' end of canine ESR1 are not associated with unilateral, abdominal and inguinal CO phenotypes and CO per se in Miniature Dachshunds and Chihuahuas. Further studies are necessary to suggest a clear association between the ESR1 SNPs and bilateral CO in dogs.
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Affiliation(s)
- Indunil Nishantha Pathirana
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
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Kawate N, Sakase M, Watanabe K, Fukushima M, Noda M, Takeda K, Ueno S, Inaba T, Kida K, Tamada H, Sawada T. Ovsynch plus CIDR protocol for timed embryo transfer in suckled postpartum Japanese Black beef cows. J Reprod Dev 2007; 53:811-7. [PMID: 17446660 DOI: 10.1262/jrd.18097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We compared synchronization and pregnancy rates, and the increase in blood progesterone concentrations during luteal development, between (1) Ovsynch plus an intravaginal controlled internal drug release (CIDR) device protocol followed by timed embryo transfer (timed ET), and (2) a conventional estrus synchronization method using PGF(2 alpha) and ET in suckled postpartum Japanese Black beef cows. Cows in the PGF group (n=18) received a PGF(2 alpha) analogue when a CL was first palpated per rectum at 10-d intervals after 1 to 2 month postpartum. Cows (n=11), which showed estrus (Day 0) within 5 d of the PGF(2 alpha), and had a CL on Day 7, received ET. Cows in the Ovsynch+CIDR group (n=19) underwent the Ovsynch protocol plus a CIDR for 7 d (GnRH analogue and CIDR on Day-9, PGF(2alpha) analogue with CIDR removal on Day-2, and GnRH analogue on Day 0), with ET on Day 7. The ovulation synchronization (100%) and embryo transfer (100%) rates in the Ovsynch+CIDR group were greater (P<0.01) than the estrus synchronization (66.7%) and the embryo transfer (61.1%) rates in the PGF group. The postpartum interval at ET in the Ovsynch+CIDR group (62.5 +/- 2.5 d) was shorter (P<0.01) than in the PGF group (74.9 +/- 3.9 d). The pregnancy rate in the Ovsynch+CIDR group (57.9%) did not differ significantly from that in the PGF group (50.0%). Plasma progesterone concentrations were not significantly different in the two groups on Days 0, 1, 2, 5, 7, 14 and 21. In summary, higher synchronization and transfer rates, and shorter postpartum interval to ET, can be achieved with timed ET following the Ovsynch plus CIDR protocol than after estrus with the single PGF(2 alpha) treatment followed by ET in suckled postpartum recipient beef cows. Pregnancy rates were similar. Also, the increase in blood progesterone concentrations during luteal development following ovulation synchronized by the Ovsynch plus CIDR protocol was similar to that after estrus induced by the PGF(2 alpha) treatment.
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Affiliation(s)
- Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan.
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Kida K, Baba E, Torii R, Kawate N, Hatoya S, Wijewardana V, Sugiura K, Sawada T, Tamada H, Inaba T. Lactoferrin expression in the canine uterus during the estrous cycle and with pyometra. Theriogenology 2006; 66:1325-33. [PMID: 16730786 DOI: 10.1016/j.theriogenology.2006.04.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2006] [Accepted: 04/26/2006] [Indexed: 10/24/2022]
Abstract
The expression of lactoferrin, a non-specific antimicrobial defence, in the canine uterus during the normal estrous cycle and in bitches with pyometra was examined. Using polymerase chain reaction analysis, lactoferrin gene transcripts were detected in the endometrium at all stages of the estrous cycle, with the highest levels in estrus. In normal bitches, endometrial lactoferrin mRNA increased from proestrus to estrus (P<0.05). Thereafter, it dramatically decreased from estrus to Day 10 of diestrus (P<0.05), and stayed low at Day 35 of diestrus and anestrus; this was consistent with blood estrogen concentrations. Levels of lactoferrin mRNA were higher in bitches with pyometra than in normal diestrus (P<0.05). With immunohistochemistry, distinct staining of lactoferrin was detected in the luminal and glandular epithelial cells of the endometrium at proestrus and estrus, but little staining was detected at Day 10 of diestrus. At Day 35 of diestrus and anestrus, a partial and weak reaction was present in the same region. In bitches with pyometra, the glandular epithelial cells and many cells in the uterine stroma were strongly stained. Staining cells in the stroma were morphologically similar to neutrophils. No lactoferrin staining was seen in the uterine stromal cells or myometrium in any section. These results suggest that, in the canine uterus, lactoferrin expression is related to the blood concentration of estrogen, and that the dramatic reduction in lactoferrin observed at the early stage of diestrus may impair antimicrobial defense. Also, enhanced expression of lactoferrin mRNA in the endometrium with pyometra may be associated with neutrophil invasion into the uterus to combat the infection.
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Affiliation(s)
- K Kida
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 599-8531, Japan
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Hatoya S, Torii R, Wijewardana V, Kumagai D, Sugiura K, Kawate N, Tamada H, Sawada T, Inaba T. Induction of fertile oestrus in bitches by an intranasal spray of gonadotrophin-releasing hormone agonist. Vet Rec 2006; 158:378-9. [PMID: 16547185 DOI: 10.1136/vr.158.11.378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- S Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 599-8531, Japan
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Hatoya S, Sugiyama Y, Torii R, Wijewardana V, Kumagai D, Sugiura K, Kida K, Kawate N, Tamada H, Sawada T, Inaba T. Effect of co-culturing with embryonic fibroblasts on IVM, IVF and IVC of canine oocytes. Theriogenology 2006; 66:1083-90. [PMID: 16620932 DOI: 10.1016/j.theriogenology.2005.12.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Accepted: 12/27/2005] [Indexed: 11/16/2022]
Abstract
We studied the effects of mouse embryonic fibroblasts (MEF) and canine embryonic fibroblasts (CEF) on IVM, IVF and IVC of canine oocytes. Cumulus-oocyte complexes were harvested from ovaries by slicing, and in vitro maturation was evaluated in three different conditions: culture media only (control), co-culture with MEF, or co-culture with CEF. The oocytes were cultured for 48 or 72 h. Only oocytes larger than 100 microm in diameter with a homogeneous dark cytoplasm and two or more layers of cumulus cells were used. The culture medium was TCM 199+10% fetal bovine serum (FBS) with 100 IU/mL penicillin and 100 microg/mL streptomycin. After 48 h of IVM, the oocytes were fertilized in vitro with fresh canine spermatozoa that had been selected by a swim-up method, and the oocytes and spermatozoa were co-cultured in modified Krebs-Ringer bicarbonate solution (TYH) for up to 20 h in 5% CO2 in air at 38.5 degrees C. After insemination, oocytes were transferred to three different conditions (the same as for IVM) and were cultured. After 48 or 72 h of maturation in vitro, the maturation rate of MII oocytes cultured in co-culture of MEF and CEF was higher than for oocytes cultured in control (P<0.05). Although the rate that reached the MII stage was not different in the 48 and 72 h cultures, the percentage of degenerated oocytes was greater at 72 h in all three treatment groups. The proportion of monospermic and polyspermic oocytes was not different among the three treatment groups. Cleavage rates were higher in the MEF and CEF treatment groups than in the control group (P<0.05). Co-culture with CEF developed the embryo up to the 16-cell stage, and with MEF up to morula stage. In conclusion, co-culture of embryonic fibroblast cells enhanced nuclear and cytoplasmic maturation of canine oocytes.
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Affiliation(s)
- S Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
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Hatoya S, Torii R, Kondo Y, Okuno T, Kobayashi K, Wijewardana V, Kawate N, Tamada H, Sawada T, Kumagai D, Sugiura K, Inaba T. Isolation and characterization of embryonic stem-like cells from canine blastocysts. Mol Reprod Dev 2006; 73:298-305. [PMID: 16292778 DOI: 10.1002/mrd.20392] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Embryonic stem (ES) cells are pluripotent cells with the capacity to generate any type of cell. Here we describe the isolation of ES-like cells from canine blastocysts. Canine embryos were collected from beagle bitches at day 11-16 of first estrus. A total of 80 normal embryos were obtained from 15 dogs. Of the embryos, 13 were at the morulae stage, 39 at the blastocyst stage, and 28 at the hatched blastocyst stage. The inside of morulae or inner cell masses (ICMs) of blastocysts were isolated mechanically, and cultured onto mouse embryonic fibroblasts (MEF) as feeder layers. Primary cell colonies were formed in 0% (0/13) of morulae, 25.6% (10/39) of blastocysts, and 67.9% (19/28) of hatched blastocysts. These colonies were separated either by enzymatic dissociation or by mechanical disaggregation. Dissociation with collagenase resulted in immediate differentiation, but with mechanical disaggregation these cells remained undifferentiated, and two ES-like cell lines (cES1, cES2) continued to grow in culture after eight passages. These cells had typical stem cell-like morphology and expressed specific markers such as alkaline phosphatase activity, stage specific embryonic antigen-1 and Oct-4. These cells formed embryoid bodies (EBs) in a suspension culture; extended culture of EBs resulted in the formation of cystic EBs. When the simple EBs were cultured on tissue culture plates, they differentiated into several types of cells including neuron-like, epithelium-like, fibroblast-like, melanocyte-like, and myocardium-like cells. These observations indicate that we successfully isolated and characterized canine ES-like cells.
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Affiliation(s)
- Shingo Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
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