1.Distribution of Traditional Chinese Medical Syndromes and Clinical Characteristics of Influenza in South of Five Ridges
Liuliu YANG ; Xiaohong LIU ; Junxiang CAI ; Gao ZHANG
Journal of Guangzhou University of Traditional Chinese Medicine 2017;34(2):149-152
Objective To investigate the distribution of traditional Chinese medical syndromes and clinical characteristics of influenza in South of Five Ridges.Methods A retrospective analysis was carried out in 162 cases of influenza patients admitted from outpatient department,emergency department and inpatient department of the First Affiliated Hospital of Guangzhou University of Chinese Medicine from 2014 to 2016.The distribution of clinical manifestations and syndrome types of the included influenza patients was analyzed.Results The average age of the included influenza patients was 35.76 ± 11.4 years old.The clinical syndromes were mainly characterized by fever,aversion to cold and chills,fatigue and weakness.And damp-accumulation manifestations of heaviness in the body,poor appetite,dry mouth without willing to drink,nausea and vomiting were also predominant.The main syndrome types were wind-heat attacking defense phase syndrome,wind-cold fettering exterior syndrome,heat-toxin attacking lung syndrome,heat-toxin accumulating lung syndrome,and damp syndrome.Of the syndrome types,wind-heat attacking defense phase syndrome and heat-toxin attacking lung syndrome were the leading types,accounting for 77.79% and interweaving with damp syndrome and heat-damp syndrome.Conclusion The syndromes of influenza patients in South of Five Ridges are usually complicated by damp syndrome or damp-heat syndrome,and the predominant syndrome type is wind-heat interweaved with damp syndrome,which is correlated with the climate being damp and hot in South of Five Ridges.
2.Effects of ATP concentration and hypoxic exposure on RNA and protein synthesis activity in isolated mitochondria from rat brain.
Jun-Ze LIU ; Wen-Xiang GAO ; Ming-Chun CAI ; Li-Fei CAO ; Bing-Yong SUN
Acta Physiologica Sinica 2002;54(6):485-489
To explore the effects of ATP concentration in the medium and hypoxia exposure on mitochondrial DNA expression at transcriptional and translational level, rats were exposed to hypoxia in a hypobaric chamber simulating 4000 m above sea level for 3 d (acute hypoxia) or 40 d (chronic hypoxia). Cerebral cortex mitochondria were isolated from control and hypoxia-exposed rats by centrifugation program. The activities of intramitochondrial RNA and protein synthesis were measured respectively by the methods of incorporation of (3)H-UTP or (3)H-Leucine in a cell-free system in vitro in isolated organelle. The effect of different ATP concentrations in medium on incorporation activity of mitochondria from control rat brains was observed. The results showed that there was a 40% reduction in RNA synthesis and a 60% inhibition in protein synthesis in isolated mitochondria in vitro in acute hypoxia exposure compared to control. But in chronic hypoxic exposure, the inhibition of both RNA synthesis and protein synthesis was alleviated, being 72% and 76% of the normoxic control, respectively. Furthermore, the effect of ATP concentration in medium on mitochondrial RNA and protein synthesis in vitro showed two phases. The mitochondrial RNA and protein synthesis were inhibited when ATP concentration was either above or below 1 mmol/L in the incubation medium. These results indicate that hypoxia exposure affects the expression of mtDNA at both transcription and translation levels. It also suggests that the improvement of mitochondrial semi-automation during chronic hypoxic exposure may be at least one of the cellular mechanisms of body adaptation to hypoxia. The regulation of ATP in mitochondrial RNA and protein synthesis is therefore an economic and effective mode of regulation.
Adenosine Triphosphate
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metabolism
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Animals
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Brain
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metabolism
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Hypoxia
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metabolism
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Male
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Mitochondria
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metabolism
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Protein Biosynthesis
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RNA
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biosynthesis
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Rats
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Rats, Wistar
3.The relationship between Aripiprazole metabolic ratio and CYP2D6 gene polymorphism in children with tic disorders and its influence on dose-exposure
Huimin CHEN ; Yang WANG ; Liuliu GAO ; Zhisheng LIU
Chinese Journal of Applied Clinical Pediatrics 2024;39(11):842-847
Objective:To investigate the relationship between the in vivo metabolic ratio (MR) of Aripiprazole (ARI) and CYP2D6 gene polymorphism in children with tic disorders (TD) and its effect on dose-exposure (DE), so as to promote precision drug use. Methods:In this study, a real-world observational study design was used to collect 81 children with TD who visited the Department of Neurology of Wuhan Children′s Hospital from January 2021 to January 2024, the concentration of the prototype drug and the main metabolite Dehydroaripiprazole (DARI), the detection data of CYP2D6 single nucleotide gene polymorphism (SNP) and clinical data were collected, and the relationship between the DARI/ARI metabolic ratio (MR) and CYP2D6 metabolic type was analyzed by the receiver operating characteristic (ROC) curve.A DE model between ARI dose and steady-state trough concentration was established by population modeling, and the effects of CYP2D6 metabolic type, MR and body weight on DE were analyzed.Goodness-of-fit diagram (GOF), visual predictive check (VPC) and prediction error analysis were used to verify the prediction performance of the DE model.Results:ROC analysis showed that there was a correlation between MR and CYP2D6 metabolic type, the MR sensitivity cut-point of CYP2D6 ultrafast metabolic (UM) patients was 0.399, and the cut-point of MR in intermediate metabolic (IM) patients was 0.252.Based on this, the patients were divided into three categories: MR TYPE Ⅰ: MR≥0.399, MR TYPE Ⅱ: 0.252