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Zhu Si-jia,Wang Rui-ting,Yu Ze-yu,Zheng Ruo-Xiang,Liang Chang-Hao,Zheng You-you,Fang Min,Han Mei,Liu Jian-ping 한국한의학연구원 2022 Integrative Medicine Research Vol.11 No.2
Background: Myasthenia Gravis (MG) is a disorder of neuromuscular transmission bringing mild ocular weakness to severe generalized muscle weakness and disability. The conventional treatments have longterm side effects, and Chinese herbal medicines (CHM) have shown possible effect and safety for MG patients, but the existing evidence was not robust enough and the results were out of date. Methods: Searching for randomized controlled trials (RCTs) was conducted in 7 databases and clinical trial registries until July 2021. The Risk of Bias (ROB) 2 tool was used to assess the study quality and GRADE was used to assess the quality of whole evidence. Meta-analyses were conducted and the results were presented as risk ratio (RR) or mean difference (MD) with 95% confidence interval (CI). Results: Nineteen RCTs (1283 participants) testing 13 kinds of CHM with adequate randomization were included and six RCTs investigating Compound Huangqi were included in the meta-analyses. In addition to conventional treatment, nine CHMs reduced symptom scores of MG. Compound Huangqi plus conventional treatment (pyridostigmine bromide or prednisone or both) reduced the symptom scores compared with conventional treatment (MD=-3.56, 95%CI -4.86 to -2.26). Less adverse events happened in the CHM groups (3/247 in the CHM groups, 52/245 in the control groups, RR=0.13, 95%CI 0.06 to 0.30, 9RCTs, a total of 492 participants). The effect on quality of life was inconsistent. Conclusion: Nine CHMs could probably bring benefit for MG symptom improvement. Moderate to low certainty of evidence supported Compound Huangqi added-on conventional treatment probably bring extra benefit of improving MG symptoms. Adding CHMs could be safer than giving only conventional treatment. Study registration: The protocol was registered in PROSPERO (CRD42016032718).
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Si-Jia Dong,Jian Ye,Lin Zhu,Li Guo,Peter Jusu Moray,Wei-Lai Liu,Jun Sun,Tien-Chien Jen 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.7
This investigation is aimed to evaluate thermal effects of the high-velocity particle impingement on the coating quality in CGDS (cold gas dynamic spray). To achieve this, the authors used an explicit time integration approach to predict interface temperatures and deformation profiles of the substrate, as well as, their relationship in commercial solver ABAQUS 6.13. Copper (Cu) and aluminum (Al) materials were specified to particle and substrate, respectively. Two essential process parameters, including six different impact velocities (300, 400, 500, 600, 700, 800 m/s) and three different particle sizes (1, 5, 15 μm), were involved in all simulations. There are very good agreements between the simulated and the published that the non-uniform interface temperature and the poor/failure particle deposition have the direct relationship with either impact velocity or particle size. Once again this study strongly demonstrates the thermal effect of the high-velocity particle impingement on coating quality in CGDS, in turn providing insights into process parameter selection.
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Effect of Run Ze Tonic in Mice with Kidney-Yin Deficiency
Shuo Liu,Si-yao Ma,Wen-yi Zhu,Jia Liang,Hong Meng 한국피부과학연구원 2021 아시안뷰티화장품학술지 Vol.19 No.1
목적: 본 연구는 Run Ze Tonic의 신장-음 결핍 마우스의 갑상선 호르몬, 부신 기능, 성 호르몬 및 주기적 뉴클레오티드에 미치는 영향을 관찰하고자 한다. 방법: ICR 마우스를 정상 대조군, 모델 그룹, Run Ze Tonic 고용량 그룹, 중간 용량 그룹 및 저용량 그룹으로 분류하였으며, 매 그룹은 20마리씩 구성하였다. 신장-음 결핍 마우스 모델은 연속 10 일 동안 1 일 1 회 레보 티록신 나트륨을 위내 직접 투여에 의해 확립되었다. 각 그룹의 마우스의 일반특징 및 체중을 관찰하고 장기지수를 측정하였다. 그리고 ELISA 방법으로 테트라 요오 도티 로닌 (T4), 트리 요오 도티 로닌 (T3), 갑상선 호르몬 (TSH), 코르티코 트로 핀 방출 호르몬 (CRH), 부 신피질 자극 호르몬 (ACTH), 코르티 코스 테론 (CORT), 테스토스테론 (T), 에스트라 디올 (E2), 고리 형 아데노신 모노 포스페이트 (cAMP) , 사 이 클릭 구아노 신 모노 포스페이트 (cGMP)를 측정하였다. 결과: Run Ze Tonic 고용량군은 신장-음결핍 마우스의 일반적인 신체 징후를 개선하고, 체중을 증가시키고(p<0.05), TSH 함량을 증가시킨다(p<0.01). 고용량 군에서 T3 및 T4 수치가 유의하게 감소하 였으며(p<0.01), ACTH 수준도 유의하게 감소하였다(p<0.05). 신장 음 결핍 암컷 마우스는 고용량 군에서 성 호르몬 E2 및 E2/T 비 율이 유의하게 감소(p<0.01)하였다. 신장 음이 결핍 된 수컷 마우스의 경우 고용량 군에서 성 호르몬 T함량이 유의하게 증가되었다 (p<0.05). 그리고 고용량 군에서 고리 형 뉴클레오티드 시스템의 cAMP 수치가 감소하였다(p<0.01). 결론: Run Ze Tonic은 내분비 계에서 호르몬 수치 장애, 부신 피질 기능 및 에너지 대사 균형을 조절하여 음양을 키우고 신장을 강화하는 역할을 할 수 있다고 사료된다. Purpose: To observe the effects of Run Ze Tonic on thyroid hormone, adrenal function, sex hormones and cyclic nucleotide of mice with kidney-yin deficiency. Methods: ICR mice were randomly grouped into normal control group, model group, Run Ze Tonic high dose group, the middle dose group and low dose group, male and female in half. The kidney-yin deficiency mice models were established by intragastric administration of levothyroxine sodium before intragastric administration of corresponding drugs once a day for 10 consecutive days. One day after the last administration, the effects were observed by measuring weight. And tetraiodothyronine (T4), triiodothyronine (T3), thyrotropin (TSH), corticotropin releasing hormone (CRH), adrenocorticotropic hormone (ACTH), corticosterone (CORT), testosterone (T), estradiol (E2), cyclic adenosine monophosphate (cAMP), cyclic guanosine monophosphate (cGMP) were tested by ELISA method. Results: Compared with the model group, the body weight, TSH level increased significantly (p <0.01, p<0.05), and T3, T4, ACTH level decreased significantly in high dose group (p <0.01, p <0.05). The E2 level in female decreased significantly in high dose group (p <0.01), the same as the ratio of E2/T (p <0.01). The T level in male increased significantly in high dose group (p <0.01), the same as the ratio of E2/T (p <0.01). And cAMP level decreased in the high dose group(p <0.05). Conclusion: Run Ze Tonic may play the role of nourishing yin and strengthening kidney by adjusting hormone level disorder, adrenal cortex function and balancing energy metabolism in endocrine system.
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eRF1aMC and Mg2+ Dependent Structure Switch of GTP Binding to eRF3 in Euplotes octocarinatus
( Song Li ),( Yu Xin Jia ),( Wen Si Zhu ),( Bao Feng Chai ),( Ai Hua Liang ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.2
Eukaryotic translation termination is governed by eRF1 and eRF3. eRF1 recognizes the stop codons and then hydrolyzes peptidyl-tRNA. eRF3, which facilitates the termination process, belongs to the GTPase superfamily. In this study, the effect of the MC domain of eRF1a (eRF1aMC) on the GTPase activity of eRF3 was analyzed using fluorescence spectra and high-performance liquid chromatography. The results indicated eRF1aMC promotes the GTPase activity of eRF3, which is similar to the role of eRF1a. Furthermore, the increased affinity of eRF3 for GTP induced by eRF1aMC was dependent on the concentration of Mg2+. Changes in the secondary structure of eRF3C after binding GTP/GDP were detected by CD spectroscopy. The results revealed changes of conformation during formation of the eRF3C·GTP complex that were detected in the presence of eRF1a or eRF1aMC. The conformations of the eRF3C·eRF1a·GTP and eRF3C·eRF1aMC·GTP complexes were further altered upon the addition of Mg2+. By contrast, there was no change in the conformation of GTP bound to free eRF3C or the eRF3C·eRF1aN complex. These results suggest that alterations in the conformation of GTP bound to eRF3 is dependent on eRF1a and Mg2+, whereas the MC domain of eRF1a is responsible for the change in the conformation of GTP bound to eRF3 in Euplotes octocarinatus.
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