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맹장을 제거한 성계숫닭에 의한 國內産 肉鷄 내장분말의 有效 아미노산 利用率
李乙衍,金炯浩,車章玉,朴弘錫 全北大學校 1994 論文集 Vol.38 No.-
This study was designed to compare true digestible amino acid values for broiler offal meal with available amino acid values. Broiler offal meal was each force-fed to 6 intact and 6 caecectomised adult cockerels For each test, Cockerels were starved of food for 24 h, fed, and then excreta collected for 48 h. Crude protein, ether extract and ash of broiler offal meal were 50.5%, 16.7%, and 11.7%, respectively. True digestibilities of all seventeen measured amino acids were lower for caecectomised than intact cockerels, with the average difference being approximately 0. 10. True available amino acid of broiler offa meal was higher values for cystine and aspartic acid in intact than in caecetomised cockerels. Generally leucine, isoleucine and glutamic-acid were among the most available amino acids, while cystine, aspartic acid and threonine were among the least available amino acids in broiler offal meal for caecectomised cockerels.
Differences of Multiple Comparison Methods for Treatment Means
Jang-Ock Cha,Sehwan Shim,Sokho Kim,Gee-Wook Shin,Jong-Hoon Kim,Myungjo You,Jun-Gyo Suh,Jungkee Kwon 한국실험동물학회 2009 Laboratory Animal Research Vol.25 No.4
Contrary to T-test in only two groups, ANOVA (Analysis of Variance) is commonly used technique for comparing the means of two or more groups. Multiple comparison methods are often performed following a significant finding in the ANOVA. There are a number of multiple comparison procedures in the literature. Although several methods are commonly available in statistical software packages, some researchers face difficulties in interpreting their data. In this paper, we demonstrate the differences of several methods for the treatment means using SAS program.
Effects of glass bead size, vortexing speed and duration on Eimeria acervulina oocyst excystation
Cha, Jang-Ock,Talha, Abul Fatah Shah Muhammad,Lim, Chae Woong,Kim, Bumseok Elsevier 2014 Experimental parasitology Vol.138 No.-
Improved methods for efficient excystation of Eimeria should be developed and standardized for future Eimeria-related studies. Here, the effects of different glass bead sizes (0.5, 1, 2, and 2.5 mm), and various vortex speeds (1000, 2000, and 3000 rpm) and durations (30s, 1, 3, and 5 min) have been examined for Eimeria (E.) acervulina oocyst excystation. At 3000 rpm, all glass beads, regardless of size, efficiently ruptured E. acervulina oocysts at 5 min. At 2000 and 3000 rpm, all four glass bead sizes increasingly ruptured oocysts in a time-dependent manner. In contrast, at 1000 rpm the excystation efficiency was not related with the glass bead size or with vortexing duration. It appeared that the 1 mm glass beads are most efficient for E. acervulina DNA extraction at a 3000 rpm vortexing speed for 3 and 5 min. The 2 mm glass beads delicately released the highest number of intact sporocysts at 2000 rpm for 3 min. Therefore, our data can provide valuable information for the efficient mechanical excystation of E. acervulina. (C) 2014 Elsevier Inc. All rights reserved.
Silencing of MUC8 by siRNA increases P2Y<sub>2</sub>-induced airway inflammation
Cha, Hee-Jae,Jung, Min-Su,Ahn, Do Whan,Choi, Jang-Kyu,Ock, Mee Sun,Kim, Kyung Soo,Yoon, Joo-Heon,Song, Eun Ju,Song, Kyoung Seob American Physiological Society 2015 American Journal of Physiology: Lung cellular and Vol.308 No.6
<P>Mucin hypersecretion and overproduction are frequent manifestations of respiratory disease. Determining the physiological function of airway mucin is presently considered more important than identifying the relevant signaling pathways. The lack of a full-length human mucin 8 (MUC8) cDNA sequence has hindered the generation of a Muc8 knockout mouse line. Thus, the precise physiological functions of MUC8 are unclear. Herein, we investigated the function of MUC8 using a small-interfering RNA (siRNA)-mediated genetic silencing approach in human airway epithelial cells. Herein, intracellular IL-1α production was stimulated by an ATP/P2Y<SUB>2</SUB> complex. While ATP/P2Y<SUB>2</SUB> increased IL-1α secretion in a time-dependent manner, treatment with P2Y<SUB>2</SUB>-specific siRNA significantly decreased IL-1α secretion. Moreover, ATP increased P2Y<SUB>2</SUB>-mediated upregulation of <I>MUC8</I> expression; however, IL-1α significantly decreased the extent to which ATP/P2Y<SUB>2</SUB> upregulated <I>MUC8</I> expression. Interestingly, treatment with MUC8-specific siRNA decreased the production of anti-inflammatory cytokines (TGF-β and IL-1 receptor antagonist) and increased the production of inflammatory cytokines (IL-1α and IL-6) in our system. In addition, siRNA-mediated knockdown of MUC8 expression dramatically increased the secretion of inflammatory chemokines and resulted in an approximately threefold decrease in cell chemotaxis. We propose that MUC8 may function as an anti-inflammatory mucin that participates in inflammatory response by attracting immune cells/cytokines to the site of inflammation. Our results provide new insight into the physiological function of MUC8 and enhance our understanding of mucin overproduction during airway inflammation.</P>
Jang, Hye-Ock,Cha, Seong-Kweon,Lee, Chang,Choi, Min-Gak,Huh, Sung-Ryul,Shin, Sang-Hun,Chung, In-Kyo,Yun, Il The Korean Society of Pharmacology 2003 The Korean Journal of Physiology & Pharmacology Vol.7 No.3
The aim of this study was to provide a basis for studying the molecular mechanism of pharmacological action of chlorhexidine digluconate. Fluorescence polarization of n-(9-anthroyloxy)stearic acid was used to examine the effect of chlorhexidine digluconate on differential rotational mobility of different positions of the number of membrane bilayer phospholipid carbon atoms. The six membrane components differed with respect to 2, 3, 6, 9, 12, and 16-(9-anthroyloxy)stearic acid (2-AS, 3-AS, 6-AS, 9-AS, 12-AS and 16-AP) probes, indicating different membrane fluidity. Chlorhexidine digluconate increased the rate of rotational mobility of hydrocarbon interior of the cultured Porphyromonas gingivalis outer membranes (OPG) in a dose-dependent manner, but decreased the mobility of surface region (membrane interface) of the OPG. Disordering or ordering effects of chlorhexidine digluconate on membrane lipids may be responsible for some, but not all of its bacteriostatic and bactericidal actions.