1.Arbuscular mycorrhizal fungi improve physiological metabolism and ameliorate root damage of Coleus scutellarioides under cadmium stress.
Yanan HOU ; Fan JIANG ; Shuyang ZHOU ; Dingyin CHEN ; Yijie ZHU ; Yining MIAO ; Kai CENG ; Yifang WANG ; Min WU ; Peng LIU
Chinese Journal of Biotechnology 2025;41(2):680-692
Soil cadmium pollution can adversely affect the cultivation of the ornamental plant, Coleus scutellarioides. Upon cadmium contamination of the soil, the growth of C. scutellarioides is impeded, and it may even succumb to the toxic accumulation of cadmium. In this study, we investigated the effects of arbuscular mycorrhizal fungi (AMF) on the adaptation of C. scutellarioides to cadmium stress, by measuring the physiological metabolism and the degree of root damage of C. scutellarioides, with Aspergillus oryzae as the test fungi. The results indicated that cadmium stress increased the activity of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), and the content of malondialdehyde (MDA) and proline (Pro) within the cells of C. scutellarioides, but inhibited mycorrhizal infestation rate, root vigour and growth rate to a great degree. With the same cadmium concentration, the inoculation of AMF significantly improved the physiological indexes of C. scutellarioides. The maximum decrease of MDA content was 42.16%, and the content of secondary metabolites rosemarinic acid and anthocyanosides could be increased by up to 27.43% and 25.72%, respectively. Meanwhile, the increase of root vigour was as high as 35.35%, and the DNA damage of the root system was obviously repaired. In conclusion, the inoculation of AMF can promote the accumulation of secondary metabolites, alleviate root damage, and enhance the tolerance to cadmium stress in C. scutellarioides.
Cadmium/toxicity*
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Mycorrhizae/physiology*
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Plant Roots/drug effects*
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Soil Pollutants/toxicity*
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Stress, Physiological
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Superoxide Dismutase/metabolism*
2.Exploration and Prospect of Quantitative Evaluation of Integrity Risk Prevention and Control in Public Hospitals
Yan CHEN ; Zhuoma JIAHUAN ; Kai WU ; Shiying LI ; Xinyu CUI ; Lu CENG ; Fang ZHU ; Juan XIE
Chinese Hospital Management 2024;44(3):80-83
Objective To explore the quantitative evaluation of integrity risk prevention and control in public hospitals,provide reference for improving the quality and efficiency of integrity risk prevention and control.Methods Self-designed"Inspection Standards for Integrity Risk Prevention and Control of Power Matters in Public Hospitals"was used to score and rate the power matters provided by each functional department/clinical department of West China Hospital of Sichuan University from three aspects:the clarity of power operation process,the accuracy of finding integrity risk points,the effectiveness of prevention and control measures.Results A total of 236 power matters of the hospital were inspected for integrity risk prevention and control,and according to the inspection criteria,57 items were rated as first grade,103 items were rated as second grade,and 76 items were rated as third grade,accounting for 24.15%,43.64%and 32.20%,respectively.The score for the special work of integrity risk prevention and control was 5.82±1.92 points,of which the process dimension score was 2.11±0.75 points,the risk points dimension score was 1.89±0.92 points,the prevention and control dimension score is 1.89± 0.79 points,which reflects the problems of unclear workflow,inaccurate finding of individual risk points,and unspecified prevention and control measures in some units.Conclusion Hospitals should focus on the concreteness,accuracy,salience and quantification in the long-term construction of integrity risk prevention and control from the aspects of thought,behavior,effectiveness and evaluation.
3.SUMO-2/3 can covalently bind to progesterone receptor B to regulate its transcriptional activity.
Bai-yu HAN ; Fa-ceng LI ; Long CHENG ; Xiao-jie XU ; Kai JIANG ; Jie FU ; Yong-jian HAN ; Zhao-hui LV ; Jing-tao DOU ; Hao ZHANG ; Qi-nong YE
Journal of Southern Medical University 2011;31(9):1493-1497
OBJECTIVETo investigate whether progesterone receptor B (PRB) can be sumoylated by SUMO-2/3 and the effect of sumoylation on PRB transcriptional activity.
METHODSSUMO-2/3 cDNA was amplified from MCF-7 cDNA and cloned into the eukaryotic expression vector pcDNA3-FLAG. The plasmid pXJ40-myc-PRB was cotransfected with pcDNA3FLAG-SUMO2, pcDNA3FLAG-SUMO3 or the mock control into 293T cells, and PRB sumoylation was detected by immunoprecipitation and Western blotting. The effect of PRB sumoylation on its transcriptional activity was determined using reporter luciferase assay.
RESULTSpcDNA3FLAG-SUMO2 and pcDNA3FLAG-SUMO3 vectors were successfully constructed. SUMO-2/3 could bind covalently to PRB and increase its transcriptional dependent on the presence of progesterone.
CONCLUSIONPRB can be sumoylated by SUMO-2/3 and its function is regulated by this modification.
Animals ; Cell Line ; Humans ; Plasmids ; genetics ; Receptors, Progesterone ; genetics ; metabolism ; Small Ubiquitin-Related Modifier Proteins ; genetics ; metabolism ; Transcription, Genetic ; Transfection ; Ubiquitination ; Ubiquitins ; genetics ; metabolism
4.Correlations between edema and the immediate and prolonged painful consequences of inflammation: therapeutic implications?
William R LARIVIERE ; Elissa J CHESLER ; Zhen LI ; Gang-Wei SHANG ; Ya-Ning CHEN ; Yao-Qing YU ; Zhuo-Min LU ; Ying CHANG ; Ceng LUO ; Kai-Cheng LI ; Jun CHEN
Acta Physiologica Sinica 2005;57(3):278-288
The precise relationship between the degree of pain and the degree of inflammation in the individual remains debated. A quantitative analysis simultaneously applied to the immediate and prolonged painful consequences of inflammation has not yet been done. Thus, the correlations between edema, nociception and hypersensitivity following an inflammatory insult were assessed in rodents. To better understand the therapeutic value of modifying specific aspects of inflammation, the effects of an anti-inflammatory drug were compared to the results. Inbred strains of mice and outbred rats received an intraplantar injection of honeybee venom and the between-group and within-group correlations were calculated for spontaneous nociceptive measures, thermal and mechanical hypersensitivity, and edema and temperature. The effect of indomethacin on the pain and inflammation measures was examined. Edema correlated with spontaneous flinching, licking and lifting of the injected paw (P< or =0.003), and not with thermal or mechanical hypersensitivity. Indomethacin affected edema and spontaneous nociception dose-dependently, and affected hypersensitivity only at the highest dose tested (P< 0.05). These results suggest that edema may contribute only to immediate spontaneous nociceptive responses to an inflammatory insult, and not to the more clinically relevant prolonged hypersensitivity. This analysis represents a method for determining which inflammatory processes are the most promising therapeutic targets against the multiple painful consequences of inflammation.
Animals
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Anti-Inflammatory Agents, Non-Steroidal
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pharmacology
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Bee Venoms
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Edema
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chemically induced
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complications
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Indomethacin
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pharmacology
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Inflammation
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chemically induced
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complications
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Male
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Mice
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Mice, Inbred BALB C
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Mice, Inbred C57BL
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Nociceptors
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physiology
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Pain
;
etiology
;
physiopathology
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Pain Measurement
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Rats
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Rats, Sprague-Dawley

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