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Grain Characteristics and Inheritance of Green-kerneled Rice (Oryza sativa L.)
Sang Ho Chu,Ho Hoon Lee,Su Noh Ryu,Hee Jong Koh 한국육종학회 2004 한국육종학회지 Vol.36 No.4
This study was conducted to characterize and to elucidate the inheritance mode of green-kerneled rices which were selected in rice germplasms collected in China. Three green-kerneled varieties (Hexi 41, Beijingluimi-1, and Jilinluimi-1), three regular whi
A Case of Microscopic Polyangiitis showing Subdural Effusion and Dural Inflammation
Chu, Min Kyung,Min, Soo Ki,Yu, Kyung Ho,Ma, Hyeo Il,Kim, Yun Joong,Kim, Joo Yong,Yun, Sung Hee,Kim, Cheol Ho,Lee, Byung Cheol 대한신경과학회 2005 대한신경과학회지 Vol.23 No.6
Microcopic polyangiitis (MPA) is a systemic disorder affecting small vessels. In MPA, the central nervous system involvements have rarely been reported. We experienced a case of MPA with subdural effusion and pachymeningitis in a 50-year-old woman. The diagnosis of MPA was made by the presence of mononeuritis multiplex, hematuria, pachymeningitis, and p-ANCA seropositivity in this patient. Subdural effusion was of exudates and an active suppurative inflammation was observed on the dural biopsy.
( Sung Wook Hong ),( Kun Sub Chung ),( In Ho Chu ) 한국응용생명화학회 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.1
Bacillus subtilis CF92, an isolate from cattle feces, produces phytase, which catalyzes the hydrolysis of phytic acid into myo-inositol and inorganic phosphates. Phytase from B. subtilis CF92 was purified via ethanol precipitation, anion-exchange chromatography, and gel filtration chromatography. Molecular weight of the purified phytase was estimated to be 46 kDa by SDS-PAGE. Purified phytase exhibited optimal activity at 60oC. The enzyme retained 40% of its original activity after 30 min incubation at 80oC. Optimum pH was 7.0, although activity remained fairly stable over pH range of 4.0 to 8.0. The enzyme was activated in the presence of EDTA and significantly inhibited by metal ions. Phytase exhibited substrate-specificity on polyphosphate compounds such as adenosine triphosphate, sodium tripolyphosphate, and sodium phytate. Km and Vmax values for sodium phytate were 0.42 mM and 4.35 μmol/min, respectively.
Effect of local anesthesia on pulpal blood flow in mechanically stimulated teeth
Chu, Wan-Sik,Park, Seung-Ho,Ahn, Dong-Kuk,Kim, Sung-Kyo 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.4
에피네프린을 함유한 국소마취제가 치수혈류량에 미치는 영향을 관찰하고, 이 국소마취가 와동 형성에 의해 야기되는 치수의 혈류변화에 미치는 영향을 평가하고자 전신마취된 아홉 마리의 고양이 견치에서 1 : 100,000 에피네프린이 함유된 2% 리도카인 용액으로의 국소 침윤마취 전후 및 와동형성 전후의 치수혈류를 laser Doppler flowmetry (Periflux4001, Perimed Co., Sweden)를 사용하여 측정하고 paired t-test로 통계분석하였다. 상아질 와동의 형성은 치수혈류의 현저한 증가를 초래하였다 (p < 0.05). 에피네트린을 함유한 리도카인의 침윤마취는 치수혈류를 유의하게 감소시켰다 (p < 0.05). 국소마취한 치아에서는 마취도지 않은 치아에 비해 와동형성시 유의하게 적은 치수혈류의 증가를 나타내었다 (p < 0.05). 따라서 본 연구에서는 혈관수축제를 포함한 국소마취가 와동 형성에 의해 초래되는 혈류량의 증가를 효과적으로 억제 할 수 있음을 보여주고 있다. The aims of the study were to evaluate the effect of epinephrine-containing local anesthetics on pulpal blood flow (PBF) and to investigate its effect on cavity preparation-induced PBF change. PBF was recorded using a laser Doppler flowmeter (Perimed Co., Sweden) from canines of nine cats under general anesthesia before and after injection of local anesthetics and after cavity preparation. 2% lidocaine hydrochloride with 1 : 100,000 epinephrine was administered by local infiltration given apical to the mandibular canine at the vestibular area and the same volume of isotonic saline was injected on the contralateral tooth as a control. A round carbide bur was operated at slow speed with isotonic saline flushing to grind spherical cavities with increasing depth through the enamel and into the dentin on both teeth. The obtained data was analyzed with paired t-test. Cavity preparation caused significant increase of PBF (n = 9, p < 0.05). Local infiltration of lidocaine with epinephrine resulted in decreases of PBF (n = 9, p < 0.05), whereas there was no significant change of PBF with the physiologic saline as a control. Cavity preparation on tooth anesthetized with lidocaine with epinephrine caused significantly less increase of PBF than in control tooth (p < 0.05). Therefore, the result of the present study demonstrates that local infiltration of 2% lidocaine with 1 : 100,000 epinephrine effectively reduces PBF increase caused by cavity preparation. 〔J Kor Acad Cons Dent 31(4):257-262, 2006〕