To characterize glutelins, the most abundant storage protein in rice, 13 complete coding sequences of glutelin genes from the database were analyzed. According to the phylogenic analysis, these genes could be classified into 5 groups, Group I to V. The degrees of homology were calculated to be in the range of 90 to 60%, but the patterns of hydrophobicity were similar in all the groups. Also, each group was found to have similar amino acid composition with variations in lysine content from 2.5 to 3.6% due to the point mutation of arginine to lysine. The isoelectric points of mature proteins and their basic chains of all the groups showed the value of about 9.0 and 10.0, respectively, while the isoelectric points of acidic chains in these groups showed the distinct value of 6.6, 6.7, 7.2, 8.4 and 7.9. The plot of the fraction of G+C at synonimous site in codons (GC3s) against effective codon numbers suggest no major difference in translational efficiency in the expression of glutelin multigenes.
Decalcification is routinely performed to obtain a pathological diagnosis using bone marrow biopsy. During the decalcification process using a conventional acidic solution, such as HCl, the antigenicity of tissue is damaged. Especially DNA and RNA in the bone marrow are impaired. Hence, there is the need for a standardized decalcification protocol that preserves the antigenicity of tissue. To this end, we compared the effects of two commonly used decalcifiers: Commercial decalcifier (Calcl-Clear Rapid, HCl) and the EDTA (12.5%, pH 7.0). Bone marrow biopsies sampled from 71 patients were decalcified in accordance with the protocols of respective groups-HCI versus EDTA. The differences of decalcification protocols were analyzed with respect to Hematoxylin & Eosin staining, Gomori'sreticulum staining, and immunohistochemical staining and molecular analysis. Immunohistochemical staining used Ki-67, CD20 and CD138 as primary antibodies and molecular analysis was conducted through the DNA concentration analysis, in situ hybridization (ISH) and immunoglobulin heavy chain (IGH) gene rearrangement. On the routine histopathology analysis, there was no difference between HCl and EDTA. Moreover, in case of immunohistochemical staining, the cytoplasmic membrane or cytoplasmic CD markers was well preserved. However, nuclear proteins, such as Ki-67, were stained with low quality. Conversely, according to the molecular analysis, the EDTA protocol preserved the DNA and RNA compared with the HCI. The differences of DNA quantity and quality were statistically significant between protocols of HCl and EDTA. We used 38 cases in HCl and 12 cases in EDTA. Consequently, the EDTA protocol maintains the antigenicity of the protein on tissue and is acceptable for examination with molecular base analysis. Decalcification of bone marrow biopsy by EDTA is highly recommended for the examination of immunohistochemical staining and molecular analysis.
Dental caries is initiated by the acid accumulated in dental plaque. Streptococcus mutans, one of a major causal agents of dental caries, is component of the dental plaque and produces various organic acids such as lactic acid as the end-product of glycolysis. As a consequence, we investigated the acid stress response of S. mutans KCTC 3065 in this study. The addition of lactic acid to the growth media had a concentration-dependent effect on the growth of S. mutans. S. mutans exhibited higher maximum culture OD compared with the more acidic growth pH values. At treatment of centration of 20 mmol/L lactic acid in the mid-log phage, cell growth was reduced to 40% relative to the control. The following results were obtained with the treatment of cells with a concentration of 20 mmol/L lactic acid in the mid-log phage for 2hrs: Analysis of fatty acids extracted from cells showed that growth at a concentration of 20 mmol/L lactic acid resulted in changes in $C_{14:0}$, $C_{16:0}$, $C_{18:0}$ and $C_{18:1}$ fatty acids. Protein profiles investigated by SDS-PAGE showed that approximately 70, 60, 45, 40 and 23 kDa proteins were highly expressed in S. mutans KCTC 3065.
Objective : This research investigates the effect of the Jangwon-Dan,(JWD) on Alzheimer's disease. Method : The effects of the JWN extract on (1) $IL-1{\beta}$, IL-6, and $TNF-{\alpha}$ mRNA of PC-12 cells treated with LPS; (2) amyloid precursor proteins(APP), acetylcholinesterase(AChE), and glial fibrillary acidic protein(GFAP) mRNA, the AChE activity and the APP production of PC-12 cell treated with CT-105; (3) the behavior; (4) expression of $IL-1{\beta}$, $TNF-{\alpha}$, MDA, $IL-1{\beta}$ mRNA, and $TNF-{\alpha}$ mRNA, (5) the infarction area of the hippocampus, and brain tissue injury in Alzheimer's diseased mice induced with ${\beta}A$ were investigated. Result : 1. The JWN extract suppressed the expression of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ mRNA in THP-1 cells treated with LPS. 2. The JWN extract suppressed the expression of APP, AChE, and GFAP mRNA in PC-12 cells treated with CT-105. 3. The JWN extract suppressed the AChE activity, and the production of APP significantly in PC-12 cells treated with CT-105. 4. For the JWN extract group a significant inhibitory effect on the memory deficit was shown for the mice with Alzheimer's disease induced by ${\beta}A$ in the Morris water maze experiment, which measured stop-through latency, and distance movement-through latency. 5. The JWN extract suppressed the over-expression of $IL-1{\beta}$ protein, $TNF-{\alpha}$ protein, MDA, $IL-1{\beta}$ mRNA, $TNF-{\alpha}$ mRNA, and CD68/GFAP, in the mice with Alzheimer's disease induced by ${\beta}A$. 6. The JWN extract reduced the infarction area of hippocampus, and controlled the injury of brain tissue in the mice with Alzheimer's disease induced by ${\beta}A$. Conclusion : These results suggest that the JWN extract may be effective for the prevention and treatment of Alzheimer's disease. Investigation into the clinical use of the JWN extract for Alzheimer's disease is suggested for future research.
This research investigates the effect of the Hibiscus syriacus(HSS) on Alzheimer's disease. Specifically, the effects of the HSS extract on (1) $IL-1{\beta}$, IL-6, and $TNF-{\alpha}$ mRNA of PC-12 cells treated with LPS; (2) amyloid precursor proteins(APP), acetylcholinesterase(AChE), and glial fibrillary acidic protein(GFAP) mRNA of PC-12 cells treated with CT-105; (3) the AChE activity and the APP production of PC-12 cell treated with CT-105; (4) the behavior; (4) expression of $IL-1{\beta}$, $TNF-{\alpha}$, $IL-1{\beta}$ mRNA, $TNF-{\alpha}$ mRNA, and reactive oxygen species(ROS); (5) the infarction area of the hippocampus, and brain tissue injury in Alzheimer's diseased mice induced with ${\beta}A$ were investigated. The results were summarized below ; 1. The HSS extract suppressed the expression of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ mRNA in THP-l cells treated with LPS. 2. The HSS extract suppressed the expression of APP, AChE, and GFAP mRNA in PC-12 cells treated with CT-105. 3. The HSS extract suppressed the AChE activity, and the production of APP significantly in PC-12 cells treated with CT-105. 4. For the HSS extract group a significant inhibitory effect on the memory deficit was shown for the mice with Alzheimer's disease induced by ${\beta}A$ in the Morris water maze experiment, which measured stop-through latency, and distance movement-through latency. 5. The HSS extract suppressed the over-expression of $IL-1{\beta}$, $TNF-{\alpha}$, $IL-1{\beta}$ and $TNF-{\alpha}$ mRNA, CD68/GFAP, ROS in the mice with Alzheimer's disease induced by ${\beta}A$. 6. The HSS extract reduced the infarction area of hippocampus, and controlled the injury of brain tissue in the mice with Alzheimer's disease induced by ${\beta}A$. These results suggest that the HSS extract may be effective for the prevention and treatment of Alzheimer's disease. Investigation into the clinical use of the HSS extract for Alzheimer's disease is suggested for future research.
Phenyllactic acid (PLA) which is known as antimicrobial compound can be synthesized through the reduction of phenylpyruvic acid (PPA) by lactate dehydrogenase (LDH) of lactic acid bacteria (LAB). LAB producing PLA was isolated from Korea Kimchi and identified to Lactobacillus plantarum SJ21 by 16 rRNA gene sequence analysis. Cell-free supernatant (CFS) from L. plantarum SJ21 was assessed for both the capability to produce the antimicrobial compound PLA and the antifungal activity against four fungal pathogens (Rhizoctonia solani, Aspergillus oryzae, Botrytis cinerea, and Collectotricum aculatum). PLA concentration was investigated to be 3.23mM in CFS when L. plantarum SJ21 was grown in MRS broth containing 5mM PPA for 16 h. PLA production also could be promoted by the supplement of PPA and phenylalanine in MRS broth, but inhibited by the supplement of 4-hydroxyphenylpyruvic acid and tyrosine as precursors. Antifungal activity demonstrated that all fungal pathogens were sensitive to 5% CFS (v/v) of L. plantarum SJ21 with average growth inhibitions ranging from 27.32% to 69.05% (p<0.005), in which R. solani was the most sensitive to 69.05% and followed by B. cinerea, C. aculatum, and A. oryzae. The minimum inhibitory concentration (MIC) for commercial PLA was also investigated to show the same trend in the range from $0.35mg\;mL^{-1}$ (2.11 mM) to $0.7mg\;mL^{-1}$ (4.21 mM) at pH 4.0. The inhibition ability of CFS against the pathogens was not affected by heating or protease treatment. However, pH modification in CFS to 6.5 caused an extreme reduction in their antifungal activity. These results may indicate that antifungal activities in CFS were caused by acidic compounds like PLA or organic acids rather than proteins or peptides molecules.
Seo, Gyoo-Tae;Lee, Eun-Kyung;Choi, Cheol-Hong;Chung, Dae-Kyoo
Journal of Oriental Neuropsychiatry
/
v.18
no.2
/
pp.101-132
/
2007
Objective : This research investigates the effect of the NogYongDaeBoTang,(NYDBT) on Alzheimer's disease. Method : The effects of the NYDBT extract on (1) $IL-1{\beta}$, IL-6, and $TNF-{\alpha}$ mRNA of PC-12 cells treated with LPS; (2) acetylcholinesterase(AChE), amyloid precursor proteins(APP), and glial fibrillary acidic protein(GFAP) mRNA the AChE activity and the APP production of PC-12 cell treated with CT-105; (3) the behavior; (4) expression of $IL-1{\beta}$, $TNF-{\alpha}$, MDA, $IL-1{\beta}$ mRNA, and $TNF-{\alpha}$ mRNA; (5) the infarction area of the hippocampus, and brain tissue injury in Alzheimer‘s diseased mice induced with ${\beta}A$ were investigated. Results : 1. The NYDBT extract suppressed the expression of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ mRNA in BV2 microglia cell line treated with LPS. 2. The NYDBT extract suppressed the expression of $IL-1{\beta}$, IL-6, and $TNF-{\alpha}$ protein production in BV2 microglia cell line treated with LPS. 3. For the NYDBT extract group a significant inhibitory effect on the memory deficit was shown for the mice with Alzheimer's disease induced by $A{\beta}$ in the Morris water maze experiment, which measured stop-through latency, and distance movement-through latency. 4. The NYDBT extract suppressed the over-expression of $IL-1{\beta}$ protein, $TNF-{\alpha}$ protein, MDA, and CD68/CD11b, in the mice with Alzheimer's disease induced by $A{\beta}$. 5. The NYDBT extract reduced the infarction area of hippocampus, and controlled the injury of brain tissue in the mice with Alzheimer's disease induced by $A{\beta}$. 6. The NYDBT extract reduced the Tau protein, GFAP protein, and presenilin1/2 protein (immunohistochemistry) of hippocampus in the mice with Alzheimer's disease induced by $A{\beta}$. Conclusions : These results suggest that the NYDBT extract may be effective for the prevention and treatment of Alzheimer's disease.
Central nervous system of two dogs with natural canine distemper was investigated histopathologically and immunocytochemically with antisera to MBP, MAG and GFAP. Histopathologically, there were neuronal degeneration and diffuse gliosis in the cerebrum, vacuolar degeneration, hypertrophy of astrocytes and demyelination in cerebellar white matter adjacent to the 4th ventricle and optic tracts showing non-inflammatory demyelinating encephalomyelitis (Summers and Appel, 1987). Immunohistochemically, there was a concurrent disappearance of MBP and MAG in the well developed demyelinating lesion in the cerebellar white matter. At the margin of demyelination, Loss of both MBP and MAG varied on the stage of demyelinating process. GFAP-positive astrocytes were hypertrophied and contained canine distemper virus intranuclear inclusions. GFAP-positive fibers were increased at the early stage of demyelination, and then were not immunoreaeted at the well developed demyelination. Hypertrophic astrocytes with intranuclear inclusions were commonly identified in the interfascular layer without myelin vacuolation and demyelination. This is the first study of primary demyelination and astroglial reactions in natural CDE investigated using immunocytochemistry of two myelin proteins and GFAP. Concurrent loss of MBP and MAG suggest that the myelin sheath is the target in the demyelinating process in CDE.
Park, Ki Ho;Kang, Seok Yong;Jung, Hyo Won;Park, Yong-Ki
The Korea Journal of Herbology
/
v.35
no.4
/
pp.9-16
/
2020
Objective : To identify the effects of the water extract of Liriope platyphylla tuber (Liriopis tuber, LT) on the activation of astocytes, we investigated the regulatory effects of LT extract on H2O2-induced oxidative damage in C6 rat astrocytes. Methods : LT extract was extracted with boiling water. C6 cell line were treated with LT extract at 1, 2, and 3 mg/㎖ or without for 30 min and then stimulated with H2O2 at 5 ㎛ for 24 hr. The cell viability was measured by MTT assay. The expression of glial fibrillary acidic protein (GFAP), signal transducer and activator of transcription 3 (STAT3), phospho-STAT3 (pSTAT3), cyclooxygenase (COX-2), Nuclear factor-κB (NF-κB), superoxide dismutase 2 (SOD2), heme oxygenase-1 (HO-1), catalase, Akt, phospho-Akt (p-Akt) phosphoinositide 3-kinases (PI3K), and protein kinase C alpha (PKCα) proteins were determined by Western blot, respectively. GFAP expression was also observed with immunocytochemistry under a fluorescence microscope. Results : LT extract induced cell proliferation in H2O2-stimulated C6 cells. LT extract significantly inhibited the expression of GFAP, NF-κB and COX-2 and increased the expression of HO-1 and the phosphorylation of STAT3 in H2O2-stimulated C6 cells. LT extract also significantly increased the phosphorylation of Akt and decreased the expression of PKCα in a dose-dependent manner in H2O2-stimulated C6 cells. Conclusions : LT extract can regulate H2O2-induced activation of astrocytes through inhibiting the expression of NF-κB, COX-2 and regulating Akt / HO-1, STAT3 or PKCα signaling pathway.
Background: Autophagy is an important adaptive mechanism in normal development and in response to changing environmental stimuli in cancer. Previous papers have reported that different types of cancer underwent autophagy to obtain amino acids as energy source of dying cells in nutrient-deprived conditions. However, whether or not autophagy in the process of lung cancer causes death or survival is controversial. Therefore in this study, we investigated whether nutrient deprivation induces autophagy in human H460 lung cancer cells. Methods: H460, lung cancer cells were incubated in RPMI 1640 medium, and the starved media, which are BME and RPMI media without serum, including 2-deoxyl-D-glucose according to time dependence. To evaluate the viability and find out the mechanism of cell death under nutrient-deprived conditions, the MTT assay and flow cytometry were done and analyzed the apoptotic and autophagic related proteins. It is also measured the development of acidic vascular organelles by acridine orange. Results: The nutrient-deprived cancer cell is relatively sensitive to cell death rather than normal nutrition. Massive cytoplasmic vacuolization was seen under nutrient-deprived conditions. Autophagic vacuoles were visible at approximately 12 h and as time ran out, vacuoles became larger and denser with the increasing number of vacuoles. In addition, the proportion of acridine orange stain-positive cells increased according to time dependence. Localization of GFP-LC3 in cytoplasm and expression of LC-3II and Beclin 1 were increased according to time dependence on nutrient-deprived cells. Conclusion: Nutrient deprivation induces cell death through autophagy in H460 lung cancer cells.
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