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Temperature-dependent Life History Traits of Paranura rosea (Collembola: Neanuridae)
Yun-Sik Lee,Nan-Hee Yang,Jino Son,Yongeun Kim,Myeongseop Kim,Hyoung-ho Mo,Kijong Ch 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.05
A new collembolan species (Paranura rosea) which was native to Korea was selected for evaluating the effect of temperature on their biology. Development, and reproduction of P. rosea were investigated at 15, 20, 25 and 30℃ Hatchability of egg was not affected by experimental temperature, and the lower threshold temperature for development of P. rosea was estimated to be 7.53℃. The temperature reduced the juvenile and adult (maturity period). The intrinsic rate of natural increase and finite rate of increase per week at 20℃ which are maximum values showed significant difference with other experimental temperatures. Survival rate, cumulative reproduction and head capsule width was fitted by several models. Especially, the model which fitted for estimating head capsule width was used to determine their life stage. Estimated head capsule width of P. rosea at the initial oviposition varied with temperature from 0.36 ± 0.007 to 0.45 ± 0.007 with maximum at 20℃ and minimum at 30℃, and significant difference was observed at all the experimental temperature (P<0.05). However, estimated head capsule width at the last oviposition showed different statistically result at only 30℃. Molting frequency per week of one P. rosea was increased as the temperature increased. Based on this study, temperature greatly influenced on their life stage and reproduction. Therefore, relationship between temperature and P. rosea is very important for understanding their biology.
Jung, Seok-Won,Kim, Hyeon-Joong,Lee, Byung-Hwan,Choi, Sun-Hye,Kim, Hyun-Sook,Choi, Yang-Kyu,Kim, Joon Yong,Kim, Eun-Soo,Hwang, Sung-Hee,Lim, Kwang Yong,Kim, Hyoung-Chun,Jang, Minhee,Park, Seong Kyu,Ch The Korean Society of Ginseng 2015 Journal of Ginseng Research Vol.39 No.3
Background: Anticancer agents induce a variety of adverse effects when administered to cancer patients. Busulfan is a known antileukemia agent. When administered for treatment of leukemia in young patients, busulfan could cause damage to the male reproductive system as one of its adverse effects, resulting in sterility. Methods: We investigated the effects of Korean Red Ginseng extract (KRGE) on busulfan-induced damage and/or dysfunction of the male reproductive system. Results: We found that administration of busulfan to mice: decreased testis weight; caused testicular histological damage; reduced the total number of sperm, sperm motility, serum testosterone concentration; and eventually, litter size. Preadministration of KRGE partially attenuated various busulfan-induced damages to the male reproductive system. These results indicate that KRGE has a protective effect against busulfan-induced damage to the male reproduction system. Conclusion: The present study shows a possibility that KRGE could be applied as a useful agent to prevent or protect the male reproductive system from the adverse side effects induced by administration of anticancer agents such as busulfan.
Na Eun Kim(Na Eun Kim),Sung Sik Kim(Sung Sik Kim),Jihei Sara Lee(Jihei Sara Lee ),Kwanghyun Lee(Kwanghyun Lee),Hyoung Won Bae(Hyoung Won Bae),Sang Yeop Lee(Sang Yeop Lee),Wungrak Choi(Wungrak Choi),Ch 대한안과학회 2023 Korean Journal of Ophthalmology Vol.37 No.3
Purpose: To evaluate the effect of intraoperative mitomycin C (MMC) on the surgical outcomes of ciliary sulcus (CS) Ahmed glaucoma valve (AGV) tube placement. Methods: A retrospective review of medical records of 54 consecutive patients who underwent AGV implantation with tube placed in CS was performed. Consecutive cases operated without the use of intraoperative MMC from 2017 to 2019 were compared with consecutive cases operated with MMC from 2019 to 2021. Surgical failure was defined as intraocular pressure (IOP) exceeding 21 mmHg in two consecutive visits after postoperative 3 months or ≤30% IOP reduction, IOP ≤5 mmHg in two consecutive visits, or loss of light perception. Kaplan-Meier survival analysis and log-rank test were performed to compare the surgical failure rates. Results: A total of 54 eyes of 54 patients were investigated. Mean follow-up period after AGV implantation was 1.4 ± 0.8 years. The MMC group showed significantly lower IOP during the 1st postoperative month (20.5 ± 8.6 mmHg vs. 15.8 ± 6.4 mmHg, p = 0.027), but the difference did not persist 6 months after the surgery (p = 0.805). The mean number of postoperative antiglaucoma medications was significantly lower in the MMC group in the 1st postoperative month (p = 0.047) but no difference was found at 6 months. No statistical difference was noted in the rates of postoperative complications. Kaplan- Meier survival analysis showed comparable survival rates between MMC group and no MMC group (p = 0.356). Conclusions: The intraoperative use of MMC significantly lowered IOP in the 1st postoperative month but did not increase 6 months success rates in patients receiving AGV tube placement in CS.
Obesity induced by high fat diet in Rhomboid family member 2 (Rhbdf2) KO mice
Sung-Jun Kim(Sung-Jun Kim),Seul Gi Park(Seul Gi Park),Young-Sub Byun(Young-Sub Byun),Eun-Kyoung Kim(Eun-Kyoung Kim),Sang-Mi Cho(Sang-Mi Cho),Harim Kim(Harim Kim),Young-Suk Won(Young-Suk Won),Hyoung-Ch 한국예방수의학회 2017 한국예방수의학회 학술대회자료집 Vol.2017 No.-
Association between colony-stimulating factor 1 receptor gene polymorphisms and asthma risk
Shin, Eun Kyong,Lee, Shin-Hwa,Cho, Sung-Hwan,Jung, Seok,Yoon, Sang Hyuk,Park, Sung Woo,Park, Jong Sook,Uh, Soo Taek,Kim, Yang Ki,Kim, Yong Hoon,Choi, Jae-Sung,Park, Byung-Lae,Shin, Hyoung Doo,Park, Ch Springer-Verlag 2010 HUMAN GENETICS Vol.128 No.3
<P>Colony-stimulating factor 1 receptor (<I>CSF1R</I>) is expressed in monocytes/macrophages and dendritic cells. These cells play important roles in the innate immune response, which is regarded as an important aspect of asthma development. Genetic alterations in the <I>CSF1R</I> gene may contribute to the development of asthma. We investigated whether <I>CSF1R</I> gene polymorphisms were associated with the risk of asthma. Through direct DNA sequencing of the <I>CSF1R</I> gene, we identified 28 single nucleotide polymorphisms (SNPs) and genotyped them in 303 normal controls and 498 asthmatic patients. Expression of <I>CSF1R</I> protein and mRNA were measured on CD14-positive monocytes and neutrophils in peripheral blood of asthmatic patients using flow cytometry and real-time PCR. Among the 28 polymorphisms, two intronic polymorphism (+<I>20511C</I>><I>T</I> and +<I>22693T</I>><I>C</I>) were associated with the risk of asthma by logistic regression analysis. The frequencies of the minor allele at <I>CSF1R</I> +<I>20511C</I>><I>T</I> and +<I>22693T</I>><I>C</I> were higher in asthmatic subjects than in normal controls (4.6 vs. 7.7%, <I>p</I> = 0.001 in co-dominant and dominant models; 16.4 vs. 25.8%, <I>p</I> = 0.0006 in a recessive model). <I>CSF1R</I> mRNA levels in neutrophils of the asthmatic patients having the +<I>22693CC</I> allele were higher than in those having the +<I>22693TT</I> allele (<I>p</I> = 0.026). Asthmatic patients with the +<I>22693CC</I> allele also showed significantly higher <I>CSF1R</I> expression on CD14-positive monocytes and neutrophils than did those with the +<I>22693TT</I> allele (<I>p</I> = 0.045 and <I>p</I> = 0.044). The +<I>20511C</I>><I>T</I> SNP had no association with <I>CSF1R</I> mRNA or protein expression. In conclusion, the minor allele at <I>CSF1R</I> +<I>22693T</I>>C may have a susceptibility effect in the development of asthma, via increased <I>CSF1R</I> protein and mRNA expression in inflammatory cells.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1007/s00439-010-0850-3) contains supplementary material, which is available to authorized users.</P>