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Sertoli cell proliferation during the post hatching period in domestic fowl
H. Hakan Bozkurt, Abit Aktas, M. Basak Ulkay, Umay B. Firat 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2007, 제 8권 제 3호 3 219-222 (4 pages)
There has been no study aimed at directly determining of the periods of Sertoli cell proliferation in birds even domestic fowl. The aims of this study were to observe the cessation of post-hatching mitotic proliferation of Sertoli cells in domestic fowl, and to determine the volume density of Sertoli and germ cells during this period. A total of 50 Leghorn chicks were used in this study. The testes sections of the animals were immunostained with BrdU to observe the proliferation of cells from... -
Participation of COX-1 and COX-2 in the contractile effect of phenylephrine in prepubescent and old rats
GustavoGuevara-Balcazar, IsraelRamirez-Sanchez, ElviaMera-Jimenez, IvanRubio-Gayosso, MariaEugeniaAguilar-Najera, MariaC.Castillo-Her 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.4 6 407-413 (7 pages)
Vascular reactivity can be influenced by the vascular region, animal age, and pathologies present. Prostaglandins (produced by COX-1 and COX-2) play an important role in the contractile response to phenylephrine in the abdominal aorta of young rats. Although these COXs are found in many tissues, their distribution and role in vascular reactivity are not clear. At a vascular level, they take part in the homeostasis functions involved in many physiological and pathologic processes (e.g., arterial... -
Effect of Taekwondo Training on Physical Fitness and Growth Index According to IGF-1 Gene Polymorphism in Children
BonghanLee, KijinKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.4 6 341-347 (7 pages)
This study analyzed the effect of regular Taekwondo training for 16 weeks on physical fitness and growth index depending on different IGF-1 gene polymorphisms. The subjects of the study were 44 male students who were 8 year years old. The IGF-1 gene showed the highest frequency of 18 CA repeat (190 bp) in 50% of subjects, and was found in the homozygote (n=11), heterozygote (n=22) and non-carriers (n=11). The results of the physical fitness and growth index among the gene polymorphism groups... -
Increased Rate of Palmitate Oxidation in Adults Female: Comparison with Peri-pubertal Young Female Rats
SeYoungLee, Jong-YeonKim, Yong-WoonKim, So-YoungPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.5 9 283-288 (6 pages)
Although estrogen is known to play a role in fatty acid metabolism, it remains unclear whether fatty acid oxidation in mature female rats differs from fatty acid oxidation in peri-pubertal young rats. In this study, we measured fatty acid metabolism in the skeletal muscles and livers of 5 and 50 weeks old male and female rats. The rate of palmitate oxidation in the liver and gastrocnemius red in the 50-week-old female rats were elevated as compared to the 5-week-old females, whereas there were... -
Socio-Economic and Political Changes and the Cultural Hybridization of Early Childhood Education and Care since South Korean Independence in 1945
Seonghwan Kim, Mary McMullen 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 22 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2021, Vol.15 No.2 12 257-278 (22 pages)
South Korean ECEC has been transformed by dynamic socio-economic and political changes. In these changes, the Korean culture as it is embedded in ECEC is continuously being retranslated and reshaped in the new, and ever-changing context by means of globalization and from those who travel abroad and bring back new ideas. Previous research is limited in that it fails to connect broader Korean cultural and societal changes to changes in ECEC over time. In this paper we illustrate the history of... -
Students’ Social and Emotional Experiences during the COVID-19 Pandemic
Hwang Mae-Hyang 경인교육대학교 교육연구원 교육논총 11 Pages
경인교육대학교 교육연구원 교육논총 제 42권 특별호 3 27-37 (11 pages)
This study examines students’ social and emotional experiences during the COVID-19 pandemic and explores the implications for educational experts including teachers. In the early stages of the COVID-19 pandemic, changes in the school learning experience negatively influenced school-age students due to repeated postponements of the start of school, online school learning for the first time without proper preparation, and loss of social interaction with friends and teachers. These negative... -
Exposure to genistein does not adversely affect the reproductive system in adult male mice adapted to a soy-based commercial diet
Beom Jun Lee, Jong-Koo Kang, Eun-Yong Jung, Young Won Yun, In-Jeoung Baek, Jung-Min Yon, Yoon-Bok Lee, Heon-Soo Sohn, Jae-Yong L 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2004, 제 5권 제 3호 7 227-234 (8 pages)
Genistein, a soybean-originated isoflavone, is widely consumed by humans for putative beneficial health effects but its estrogenic activity may affect adversely the development of male reproductive system. Five-week-old ICR mice were purchased and fed with a soybean-based Purina Chow diet until 6 months of age. The animals were exposed by gavage to genistein (2.5 mg/kg/day) or 17β-estradiol (7.5μg/kg/day) for five weeks. Corn oil was used for the negative control. The animals were fed the... -
The Effects of Digital Game-Based Learning on Early English Literacy Task for Non-Native Speakers
Norehan Zulkiply, Afina Abd Aziz 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 18 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2019, Vol.13 No.2 7 123-140 (18 pages)
Despite the growing evidence for the benefits of digital game-based learning (DGBL) in promoting learning in various contexts, the effects of DGBL on early English literacy learning for non-native speakers remains unknown. The present study examined the effectiveness of using DGBL in enhancing student learning in an early English literacy task for non-native speakers. In the experiment, 66 Malay pre-school students who were identified as having low literacy in English (determined using a...
