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Yin Myat Myat Min,양서영,이현석,이정건,최명규,황운하 경상국립대학교 농업생명과학연구원 2023 농업생명과학연구 Vol.57 No.1
Temperature is a crucial environmental factor for rice cultivation due to the climate change and can influence the rice growth anddevelopment. Therefore, the effect of temperature on plant growth characters was examined during the vegetative growth stage. Plantswere grown under three different temperatures: 23°C/13°C for 18°C, 26°C/16°C for 21°C and 29°C/19°C for 24°C in the phytotron. The temperature was treated after transplanting and ended in early panicle initiation stage. Heading date of the two varieties were stronglyaffected by the temperature and were delayed in the 18°C. The plant height in the 18°C was 21 % shorter than the 21°C and 24°Cand the tiller and leaf number were increased in the 18°C. All the growth rates of the characters were the slowest in 18°C. The stemdry weight was significantly increased in 18°C. Nitrogen content was increased in the leaves of 18°C whereas available phosphate andpotassium contents was found to be increased in the stems of 21°C and 24°C. OsNRT2.1 was overexpressed in the leaves and stemsof 18°C and OsNRT2.3a could be expressed in 18°C and 21°C temperatures whereas more expressed in 21°C. OsPT1 and OsPT6 couldbe expressed in the leaf of 18°C and 24°C but could be expressed more in the stem of 18°C. OsHAK1 and OsHAK5 could be overexpressedin the leaves and stems of 18°C. For hormone, OsCKX2 gene was found to be up regulated in the leaves of 18°C and OsIAA1 genecould expressed more in the stem of 24°C.
Nyunt, Myat Htut,Hlaing, Thaung,Oo, Htet Wai,Tin-Oo, Lu-Lu Kyaw,Phway, Hnin Phyu,Wang, Bo,Zaw, Ni Ni,Han, Soe Soe,Tun, Thurein,San, Kyaw Kyaw,Kyaw, Myat Phone,Han, Eun-Taek Oxford University Press 2015 Clinical infectious diseases Vol.60 No.8
<P>K13 mutations were significantly associated with day 3 parasitaemia, emphasizing the importance of K13 surveillance. Low prevalence of K13 mutations and absence of day 3 positive cases indicate that artemisinin resistance may not have spread to the western Myanmar border region.</P><P><B><I>Background.</I></B> As K13 propeller mutations have been recently reported to serve as molecular markers, assessment of K13 propeller polymorphisms in multidrug-resistant gene in isolates from Myanmar, especially the eastern and western border areas, is crucial if we are to understand the spread of artemisinin resistance.</P><P><B><I>Methods.</I></B> A 3-day surveillance study was conducted in the eastern and western border areas in Myanmar, and K13 propeller and <I>Plasmodium falciparum</I> multidrug resistance-associated protein 1 (<I>pfmrp1</I>) mutations were analyzed.</P><P><B><I>Results.</I></B> Among the 1761 suspected malaria cases screened, a total of 42 uncomplicated falciparum cases from the eastern border and 49 from the western border were subjected to 3 days of surveillance after artemether-lumefantrine treatment. No parasitemic case showing positivity on day 3 was noted from the western border, but 26.2% (11/42) of cases were positive in the eastern border. Although we found no marked difference in the prevalence of the <I>pfmrp1</I> mutation in the eastern and western borders (36% vs 31%, respectively), K13 mutations were more frequent in the eastern border area (where the 3-day persistent cases were detected; 48% vs 14%). C580Y, M476I, A481V, N458Y, R539T, and R516Y accounted for 68.9% of all K13 mutations significantly associated with day 3 parasitaemia.</P><P><B><I>Conclusions.</I></B> The K13 mutations were significantly associated with day 3 parasitaemia, emphasizing the importance of K13 surveillance. The low prevalence of K13 mutations and the absence of day 3 parasitaemic cases indicate that artemisinin resistance may not have spread to the western Myanmar border region. Although analysis of multiple K13 mutations is challenging, it should be done at various sentinel sites in Myanmar.</P>
Molecular Evidence of Drug Resistance in Asymptomatic Malaria Infections, Myanmar, 2015
Nyunt, Myat Htut,Shein, Thinzar,Zaw, Ni Ni,Han, Soe Soe,Muh, Fauzi,Lee, Seong-Kyun,Han, Jin-Hee,Thant, Kyaw Zin,Han, Eun-Taek,Kyaw, Myat Phone Centers for Disease Control and Prevention 2017 Emerging infectious diseases Vol.23 No.3
<P>Artemisinin resistance containment in Myanmar was initiated in 2011 after artemisinin-resistant <I>Plasmodium falciparum</I> malaria was reported. Molecular evidence suggests that asymptomatic malaria infections harboring drug resistance genes are present among residents of the Myanmar artemisinin resistance containment zone. This evidence supports efforts to eliminate these hidden infections.</P>
Hlaing Myat Thu,Theingi Win Myat,Mo Mo Win,Kyaw Zin Thant,Shofiqur Rahman,Kouji Umeda,Sa Van Nguyen,Faustino C. Icatlo Jr,Kyoko Higo-moriguchi 한국축산식품학회 2017 한국축산식품학회지 Vol.37 No.1
The rotavirus-induced diarrhea of human and animal neonates is a major public health concern worldwide. Until recently, no effective therapy is available to specifically inactivate the rotavirion particles within the gut. Passive immunotherapy by oral administration of chicken egg yolk antibody (IgY) has emerged of late as a fresh alternative strategy to control infectious diseases of the alimentary tract and has been applied in the treatment of diarrhea due to rotavirus infection. The purpose of this concise review is to evaluate evidence on the properties and performance of anti-rotavirus immunoglobulin Y (IgY) for prevention and treatment of rotavirus diarrhea in human and animal neonates. A survey of relevant anti-rotavirus IgY basic studies and clinical trials among neonatal animals (since 1994-2015) and humans (since 1982-2015) have been reviewed and briefly summarized. Our analysis of a number of rotavirus investigations involving animal and human clinical trials revealed that anti-rotavirus IgY significantly reduced the severity of clinical manifestation of diarrhea among IgY-treated subjects relative to a corresponding control or placebo group. The accumulated information as a whole depicts oral IgY to be a safe and efficacious option for treatment of rotavirus diarrhea in neonates. There is however a clear need for more randomized, placebo controlled and double- blind trials with bigger sample size to further solidify and confirm claims of efficacy and safety in controlling diarrhea caused by rotavirus infection especially among human infants with health issues such as low birth weights or compromised immunity in whom it is most needed.
Myat Thaint Ko,Tae In Ahn,Jong Hwa Shin,Jung Eek Son 한국원예학회 2014 원예과학기술지 Vol.32 No.4
Ion imbalance in recycled nutrient solutions is caused by selective ion uptake of plants, which occurs at different rates in different growth stages. The objectives of this study were to investigate the ion balances in both recycled nutrient solutions and rockwool media using different renewal patterns for the nutrient solutions, and to analyze the subsequent effects on uptake of water and nutrients. Over 12 weeks of paprika cultivation, two different renewal patterns (week units) of 6-4-2 and 8-2-2 weeks were compared with a constant renewal pattern of 4-4-4 weeks (control). The nutrient solution in the reservoir tank was constantly maintained at EC 2.5 dS·m<SUP>-1</SUP> and pH 5.5-6.5. The changes in the ion balance with the 4-4-4 week pattern were smaller than those with the other treatments. In the early growth stage, however, the ion balances similarly changed among all treatments. Greater changes were subsequently observed for the 6-4-2 week pattern. Although fruit yield and shoot fresh weight of paprika were the lowest with 6-4-2 renewal pattern, no significant differences were observed. Our results indicate that renewal intervals can be extended in consideration of growth stage for more efficient and practical operations in closed soilless cultures.