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Germline Mutations of hMLH1 and hMSH2 Genes in Korean Hereditary Nonpolyposis Colorectal Cancer
Yuan Ying,Nakamura,Yusuke,Kim,Jin-Pok,Won,Yong-Jin,Choe,Kuk Jin,Lee,Kee Hyung,Kim,Cheong Yong,Kang,Koo Jeong,Oh,Jae-Hwan,Han,Hye-Jung,Kim,Sung,Park,Jae-Gahb,Ku,Ja-Lok,Kim,Kwang Yun,Oh,Nahm-Gun 가톨릭중앙의료원 가톨릭암센터 1996 암심포지움 Vol.- No.2
Hereditary nonpolyposis colorectal cancer(HNPCC) is one of the most common autosomal donimamtly inherited diseases, affecting as many as one in every 200-400 individuals in the Western world. HNPCC is responsible for up to 15% of all colorectal cancers (1). It has recently been shown that the mismatch repair genes, hMSH2, hMLH1, hPMS1, and hPMS2, are mutated in the germline of affected members in HNPCC families(2-6), as well as for some apparently nonhereditary cancer patients(7-9). A combination of linkage and mutational aanalysis has indicated that hMSH2 and hMLH1 are likely to be the prevalent genes responsible for HNPCc, accounting for 80%~90% of HNPCC cases(10-13), while hPMS1 and hPMS2 are thought to account for only a minor fraction of cases. The indentification of the causative mutations in HNPCC families is desirable, since it allows the carrier status of unaffected relatives at risk to be determined.
Korea Red Ginseng Alters Electroencephalogram Spectra of Sleep-Wake Stage in Rats
Yuan Ma,Jae Soon Eun,Jae-Hoon Cheong,Dong-Kwon Rhee,Jin Tae Hong,Ki-Wan Oh 고려인삼학회 2008 Journal of Ginseng Research Vol.32 No.3
The present investigation was performed to evaluate the homeostatic regulation of sleep architecture by the ethanolextract of Korea red ginseng (KRG), since the available data were often controversial. In addition, it was also interested in whether the sleep-wake stages were differently affected by low and high doses of KRG. Each adult Wistar male rat was implanted with a transmitter for recording EEG and activity via telemetry. After one week of surgery, polygraphic signs of undisturbed sleep-wake activities were recorded for 12 h (between 9:00 am and 9:00 pm) after KRG administration. KRG (10 and 100 ㎎/㎏) increased non-rapid eye movement (NREM) sleep as well as total sleep. The total percentages of wakefulness were decreased comparably. KRG (10 ㎎/㎏) decreased the power density of the δ-wave (0.75-4.5 ㎐) and increased α-wave (8.0-13.0 ㎐) in the NREM and rapid eye movement (REM) sleep. KRG also decreased δ-wave power density in wake time. However, KRG (100 ㎎/㎏) increased δ-wave and decreased θ-wave (5.0-9.0 ㎐) power density in wake time, while showed little effect on the power density in NREM and REM sleep. In conclusion, low and high doses of KRG increase spontaneous sleep and NREM sleep and differently regulate the EEG spectra in REM and NREM sleep.
Korea Red Ginseng Alters Electroencephalogram Spectra of Sleep-Wake Stage in Rats
Ma, Yuan,Eun, Jae-Soon,Cheong, Jae-Hoon,Rhee, Dong-Kwon,Hong, Jin-Tae,Oh, Ki-Wan The Korean Society of Ginseng 2008 Journal of Ginseng Research Vol.32 No.3
The present investigation was performed to evaluate the homeostatic regulation of sleep architecture by the ethanol extract of Korea red ginseng (KRG), since the available data were often controversial. In addition, it was also interested in whether the sleep-wake stages were differently affected by low and high doses of KRG. Each adult Wistar male rat was implanted with a transmitter for recording EEG and activity via telemetry. After one week of surgery, polygraphic signs of undisturbed sleep-wake activities were recorded for 12 h (between 9:00 am and 9:00 pm) after KRG administration. KRG (10 and 100 mg/kg) increased non-rapid eye movement (NREM) sleep as well as total sleep. The total percentages of wakefulness were decreased comparably. KRG (10 mg/kg) decreased the power density of the ${\delta}-wave$ (0.75-4.5 Hz) and increased ${\alpha}-wave$ (8.0-13.0 Hz) in the NREM and rapid eye movement (REM) sleep. KRG also decreased ${\delta}-wave$ power density in wake time. However, KRG (100 mg/kg) increased ${\delta}-wave$ and decreased ${\theta}-wave$ (5.0-9.0 Hz) power density in wake time, while showed little effect on the power density in NREM and REM sleep. In conclusion, low and high doses of KRG increase spontaneous sleep and NREM sleep and differently regulate the EEG spectra in REM and NREM sleep.
Affecting Factors of Secondhand Smoke Exposure in Korea: Focused on Different Exposure Locations
Sun, Li-Yuan,Cheong, Hae-Kwan,Lee, Eun-Whan,Kang, Kyeong-Jin,Park, Jae-Hyun The Korean Academy of Medical Sciences 2016 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.31 No.9
<P>Exposure to secondhand smoke (SHS) not only can cause serious illness, but is also an economic and social burden. Contextual and individual factors of non-smoker exposure to SHS depend on location. However, studies focusing on this subject are lacking. In this study, we described and compared the factors related to SHS exposure according to location in Korea. Regarding individual factors related to SHS exposure, a common individual variable model and location-specific variable model was used to evaluate SHS exposure at home/work/public locations based on sex. In common individual variables, such as age, and smoking status showed different relationships with SHS exposure in different locations. Among home-related variables, housing type and family with a single father and unmarried children showed the strongest positive relationships with SHS exposure in both males and females. In the workplace, service and sales workers, blue-collar workers, and manual laborers showed the strongest positive association with SHS exposure in males and females. For multilevel analysis in public places, only SHS exposure in females was positively related with cancer screening rate. Exposure to SHS in public places showed a positive relationship with drinking rate and single-parent family in males and females. The problem of SHS embodies social policies and interactions between individuals and social contextual factors. Policy makers should consider the contextual factors of specific locations and regional and individual context, along with differences between males and females, to develop effective strategies for reducing SHS exposure.</P>