1.Protective effects of quercetin on nephrotoxicity induced by cyclosporine A in rats
Chinese Journal of Clinical Pharmacology and Therapeutics 2002;0(06):-
AIM: To investigate the protective effects of quercetin on nephrotoxicity induced by cyclosporine A(CsA)in rats. METHODS: Male Sprague-Dawley (SD) rats were divided into four groups of seven rats each. Control group, quercetin (40 mg/kg) group, CsA (40mg/kg) group, CsA (40 mg/kg) plus quercetin (40 mg/kg) group. The all groups were administered once day respectively for 15 days. Twenty-four hour urines were collected at the 10th and 14th day respectively after administration to measure the content of urinary protein and urinary N-acetyl-?-D-glucosaminidase(NAG). The animals in all groups were sacrificed 4 h after the last administration. Blood samples were collected to measure serum creatinine(SCr), blood urea nitrogen(BUN). Kidneys were removed rapidly, excised and sectioned for histological analysis. Other kiney tissues were utilized for biochemical analysis. RESULTS: Quercetin prevented urinary protein, SCr, BUN, NAG, and kidneys histological alterations.Quercetin significantly decreased malondialdehyde(MDA) content while significantly increased glutathione(GSH) content and glutathione-S-transferase(GST), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase(CAT) activities of kidneys tissues in the rats treated with CsA. CONCLUSION: Quercetin can effectively attenuate the nephrotoxicity induced by CsA.
2.Protective effects and mechanisms of tetramethypyrazine on accelerated anti-GBM antibody nephritis in rats
Chinese Pharmacological Bulletin 1987;0(02):-
AIM To investigate the protective effects and mechanisms of TMP on accelerated anti-glomerulus basement membrane(GBM) antibody nephritis of rats. METHODS Model of accelerated anti-GBM nephritis was established in rats and TMP was administrated 120 mg?kg -1 ?d -1 by ip since the day before the model established, consecutively for 15 days. Content of 24h urine protein was detected after model established and rats were killed on d 7 and d 14. Contents of blood urine nitrogen (BUN) and serum creatinine (SCr) were detected. Renal cortex cytoplasm and mitochondria were produced and change of content of lipid peroxidation products malondialdehyde(MDA), activities of glutathione peroxidase(GSH-Px) and catalase(CAT) and superoxide dismutase(SOD) were investigated. RESULTS Compared with model group, TMP group showed significant inhibition in changes of proteinuria and BUN, SCr(P
3.Effects of tetramethylpyrazine on proliferation of rat glomerular mesangial cells induced by lipopolysaccharide and levels of intercellular adhesion molecule-1
Chinese Journal of Clinical Pharmacology and Therapeutics 1999;0(04):-
AIM : To investigate the effects of tetramethylpyrazine (TMP) on the proliferation of rat glomerular mesangial cells (GMCs) induced by LPS and the levels of intercellular adhesion molecule-1 (I CAM-1). METHODS : Different concentrations of TMP were put in the cultured rat GMCs in vitro after induced by LPS. Cell proliferation was assessed by MTT colorimetric assay and cell cycle was analyzed by flow cytometry. The levels of ICAM-1 were detected by immunohistology. RESULTS : The proliferation of MC induced by LPS was inhibited significantly by TMP with a dose-dependant manner. In the cell cycle, TMP increased the cells in G 0/G 1 phase and decreased the cells in S phase, and the ICAM-1 expression level was decreased. CONCLUSION : LPS-induced proliferation of MC is inhabited significantly by TMP. It blocks G 0/G 1 phase into S phase and inhibited the ICAM-1 expression.
4.Teaching Contents and Methods on Clinical Occupational Therapy in Higher Vocational Education
Wei CHEN ; Qixiong LIU ; Xianping HUANG ; Xuan CHEN ; Xiaoling LI
Chinese Journal of Rehabilitation Theory and Practice 2010;16(10):997-998
According to the current characteristics of higher vocational education, combined with the 5-year teaching experience of our college, this paper had made some explorations on the reforms of teaching contents and methods in the course of Clinical Occupational Therapy.
5.Examination Reform of Clinical Occupational Therapy Course in Higher Vocational Education
Qixiong LIU ; Wei CHEN ; Xuan CHEN ; Xianping HUANG ; Xiaoling LI
Chinese Journal of Rehabilitation Theory and Practice 2011;17(5):491-492
The examination is the very important component of course of higher vocational and technical education, which relates to the teaching quality. In order to improve the effect of learning and reinforce the students to master practical skills, according to the problems existing in the examination, combined with the 5 years teaching experiences of our college, this paper gives some advices about the examination in the course of Clinical Occupational Therapy.
6.Neonatal intrahepatic cholestasis caused by citrin deficiency:updated understanding
Jingying LIU ; Jingkun MIAO ; Yuanyuan HUA ; Huijuan LIU ; Qian MA ; Chun LI ; Jialin YU ; Qixiong CHEN
Journal of Clinical Pediatrics 2016;34(12):949-953,955
Neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD) is an autosomal recessive disease caused by SLC25A13 gene mutations, and is characterized by delayed jaundice clearance, liver dysfunction, and elevated aminoacidemia. The confirmed diagnosis depends on gene analysis. Citrin deficiency is one of the important causes of neonatal intrahepatic cholestasis in China. Recently more and more researches about NICCD were reported. The paper summarized the epidemiology, pathogenesis, clinical characteristics, and progresses in diagnosis and treatment of NICCD.
7.Advance of studies on bioactivity of flavonoid-metal complexes.
Yanji LIU ; Xiaoyan HE ; Hua ZUO ; Qixiong ZHANG ; Zhubo LI ; Lunyong SHI
China Journal of Chinese Materia Medica 2012;37(13):1901-1904
The flavonoid-metal complexes showed obviously stronger bioactivities such as antibiosis, antivirus, anti-inflammatory, anti-tumor and anti-free-radical, possibly because of the stronger binding force caused by the change in complex structure and accessibility to target spots, or the synergy effect between flavonoids and metallic ions. This essay summarizes studies on bioactivity and mechanism of flavonoid-metal complexes, in order to provide reference for in-depth study and development on effective constituents contained in flavonoid traditional Chinese medicines.
Animals
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Coordination Complexes
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pharmacology
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Drugs, Chinese Herbal
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pharmacology
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Flavonoids
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pharmacology
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Humans
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Medicine, Chinese Traditional
8.Research progress of suppressor APC domain containing 2 in tumor
Qixiong LONG ; Jingchun LI ; Wei SUN
Journal of Chinese Physician 2023;25(2):292-295
Suppressor APC domain containing 2 (SAPCD2) gene may affect tumor proliferation, invasion, migration and apoptosis, and participate in tumor-related signal pathway transduction, suggesting that SAPCD2 may be a biomarker of tumor and a potential target for treatment. Therefore, SAPCD2 has been widely concerned by researchers. This article reviews the role and related mechanisms of SAPCD2 in tumors.
9.Clinical outcomes of iliotibial band with Gerdy's tubercle transplantation for irreparable rotator cuff tears
Hongwu ZHUO ; Huihui CHEN ; Xiwei ZHONG ; Qixiong DING ; Xiaodong LI ; Jian LI
Chinese Journal of Orthopaedics 2018;38(7):396-402
Objective To observe the early clinical outcomes of iliotibial band with Gerdy's tubercle transplantation for irreparable rotator cuff tears (IRCT).Methods A total of 16 patients with IRCT who underwent iliotibial band with Gerdy's tubercle transplantation from June 2014 to June 2015 and with a minimum follow-up of 2 years were retrospectively analyzed.There were 4 male and 12 female with a mean age of 56.1±6.6 years old (range 44-67 years old).The X-ray and MRI were used to evaluate the improvement of acromiohumeral interval (AHI),rotator cuff healing and final outcome of bone graft postoperatively.Functional outcomes were assessed by visual analogue scale (VAS),American Shoulder and Elbow Surgeon (ASES) and Constant-Murley score.Results The average follow-up duration was 25.3±1.5 months (range 24-48 months).At the final follow-up,the forward flexion,external rotation and internal rotation were 159.37°±8.51°,35.31°±8.26° and 11.00°±2.52°,respectively.There was statistically significant difference between preoperative and postoperative joint range of motion (P < 0.05).At the 3 months postoperatively,all patients had complete bone union between the Gerdy's tubercle and the greater tubercle.However,at the final followup,partial or complete bone absorption was observed in 6 patients.Twelve patients had complete rotator cuff healing,and 4 patients had partial healing.No patient had rotator cuff retear.The AHI increased significantly from 3.63±1.25 mm preoperatively to 8.37± 1.02 mm postoperatively (P < 0.05).The postoperative VAS,ASES and Constant-Murley score were 1.06±0.93,81.75±6.80 and 77.12± 6.72,respectively.The differences between preoperative and postoperative VAS,ASES and Constant-Murley score were statistically significant (P < 0.05).There was significant difference in postoperative VAS between bone absorption group and non-absorption group (P < 0.05),while no significant difference was found in ASES or Constant-Murley score (P > 0.05).Conclusion All patients had complete or partial rotator cuff healing.However,37.5% of the patients had bone absorption and obtained a worse VAS score.The iliotibial band with Gerdy's tubercle transplantation for IRCT could significantly restore the joint function at 2 years postoperatively.
10.Pathologically triggered in situ aggregation of nanoparticles for inflammation-targeting amplification and therapeutic potentiation.
Qiang NIE ; Chenwen LI ; Yu WANG ; Yi HU ; Wendan PU ; Qixiong ZHANG ; Jiajun CAI ; Yongyao LIN ; Gang LI ; Chenping WANG ; Lanlan LI ; Yin DOU ; Jianxiang ZHANG
Acta Pharmaceutica Sinica B 2023;13(1):390-409
Uncontrolled and persistent inflammation is closely related to numerous acute and chronic diseases. However, effective targeting delivery systems remain to be developed for precision therapy of inflammatory diseases. Herein we report a novel strategy for engineering inflammation-accumulation nanoparticles via phenolic functionalization. Different phenol-functionalized nanoparticles were first developed, which can undergo in situ aggregation upon triggering by the inflammatory/oxidative microenvironment. Phenolic compound-decorated poly (lactide-co-glycolide) nanoparticles, in particular tyramine (Tyr)-coated nanoparticles, showed significantly enhanced accumulation at inflammatory sites in mouse models of colitis, acute liver injury, and acute lung injury, mainly resulting from in situ cross-linking and tissue anchoring of nanoparticles triggered by local myeloperoxidase and reactive oxygen species. By combining a cyclodextrin-derived bioactive material with Tyr decoration, a multifunctional nanotherapy (TTN) was further developed, which displayed enhanced cellular uptake, anti-inflammatory activities, and inflammatory tissue accumulation, thereby affording amplified therapeutic effects in mice with colitis or acute liver injury. Moreover, TTN can serve as a bioactive and inflammation-targeting nanoplatform for site-specifically delivering a therapeutic peptide to the inflamed colon post oral administration, leading to considerably potentiated in vivo efficacies. Preliminary studies also revealed good safety of orally delivered TTN. Consequently, Tyr-based functionalization is promising for inflammation targeting amplification and therapeutic potentiation of nanotherapies.