1.The role of the airway remodeling in chronic obstructive pulmonary disease PGD 2 regulate TGF-β1
Jianying LIU ; Daishun LIU ; Zhenfeng LIU
Chongqing Medicine 2014;(27):3588-3591
Objective To explore PGD2 biological characteristics in L-929 mice lung fibroblasts cell by Laropiprant is a specific in-hibitor of PGD2 receptor regulation of TGF-β1/Smads signaling pathway .Provide further basis research to explore the molecular mechanisms of airway fibrosis .Methods The cells divided by Laropiprant concentration 0 .3 μmoL group ,1 .0 μmoL group ,3 .0μmoL group ,10 .0 μmoL group ,30 .0 μmoL and the control group .Each group were added TGF-β2 (2 .5 ng/mL) were cultured for 24 h after stimulation with the corresponding concentrations of Laropiprant 24 h ,TGF-β1 Smad3 and Smad4 expression were detected by PCR and WB ,respectively .A randomized approach ,using different concentrations of Laropiprant acts on cells at different times (12 ,24 ,48 ,72 h) by MTT assay for cell growth Laropiprant inhibition .Results TGF-β1 ,Smad3 and Smad4 mRNA expression de-creased with the addition of Laropiprant concentration increases ,there was significant difference compared with the control group with (P<0 .05) .TGF-β1 ,Smad3 and Smad4 protein expression decreased with the addition of Laropiprant concentration increases ,there was significant difference compared with the control group with (P< 0 .05) .Cell growth inhibition rate decreased with Laropiprant concentration increasing and cell culture time growth ,Laropiprant in concentration 1μml ,reaction time was 24 to 36 h ,the cell growth inhibition was significantly improved .Conclusion PGD2-DP1 expression in L-929 mouse lung fibroblasts cell may be associated with TGF-β1/Smads regulation .growth inhibition rate decreased with Laropiprant concentration increasing and cell culture time growth ,re-action time prolong ,the cell growth inhibition was significantly improved .
2.Preventive effect of zoledronic acid on bone loss around the prosthesis stem after hip replacement
Guoqing LIU ; Zhenfeng YUAN ; Peng LIU ; Tongtao PANG ; Xianwei ZHANG
Chinese Journal of Tissue Engineering Research 2015;(35):5593-5597
BACKGROUND:Bone loss to different degrees may appear within 1 year after hip replacement in the femoral or acetabular sides, and severely affect long-term stability of the prosthesis and bone strength. Thus, to reduce bone loss around the prosthesis stem after total hip replacement is significant to prolong the use time of the prosthesis and to prevent fractures surrounding the prosthesis.
OBJECTIVE:To observe the preventive effect of zoledronic acid on bone loss surrounding the prosthesis stem after hip replacement.
METHODS:A total of 80 patients after total hip replacement in the People’s Hospital of Shenxian from February 2011 to September 2014 were enrol ed in this study. They were divided into two groups (n=40). At 4 days after replacement, patients in the observation group received treatment with zoledronic acid, but those in the control group did not give zoledronic acid. The rest medication was identical between the two groups. Bone mineral density in the hip was measured before replacement and at 1 year after replacement in both groups. Serum calcium and
phosphorus levels and alkaline phosphatase activities were observed before replacement, 3 days and 1 year after medication in the two groups. Adverse reaction during medication was recorded in the observation group.
RESULTS AND CONCLUSION:The average bone mineral density was significantly decreased in both groups at 1 year after replacement, and significant differences were found as compared with before replacement (P<0.05). The average bone mineral density was significantly higher in the observation group than in the control group at 1 year after
replacement (P<0.05). Calcium and phosphorus levels were significantly diminished at 3 days after medication as compared with that before replacement (P<0.05). Calcium and phosphorus levels maintained at the level before replacement at 1 year after medication. Alkaline phosphatase activities were slightly reduced within a short time after replacement in both groups, but no significant difference was found as compared with before replacement (P>0.05). Alkaline phosphatase activities were low in the observation group at 1 year after medication, and significant difference was detected as compared with the control group and that before replacement (P<0.05). No significant difference in alkaline phosphatase activities was detectable in the control group between 1-year post medication and pre-replacement (P>0.05). Within two or three days after medication, nine patients suffered from varying degrees of muscle aches and fever in the observation group, and above symptoms were lessened after taking acetaminophen. These results verify that after total hip replacement, zoledronic acid injection can effectively prevent bone loss around the prosthesis in early stage after replacement, but fever symptoms may occur within a week after replacement. Thus, it is recommended that zoledronic acid injection can be given at 1 week after replacement. If fever and other symptoms appear, acetaminophen can be given.
3.The analysis of the factor influencing the hyponatremia of hypertensive intracerebral hemorrhage
Hui LIU ; Lihua WANG ; Naizhu WANG ; Zhenfeng JIA
Chinese Journal of Postgraduates of Medicine 2012;(z1):24-25
Objective To explore the factors influencing the hyponatremia of hypertensive intracerebral hemorrhage.Methods One hundred and five patients with hypertensive intracere bral hemorrhage recorded 7 parameters in patients:age,gender,the use of furosemide,duration of using mannitol,the frequency of using mannitol every day,hypertensive intracerebral hemorrhage early clinical classification,bleeding broken into the ventricle.To get the obviously variability with the hyponatremia by single variable logistic regression analysis.To get the best equation by multivariable logistic regression analysis.Results The obviously variability with the hyponatremia is age,duration of using mannitol,hypertensive intracerebral hemorrhage early clinical classification,bleeding broken into the ventricle.Conclusion Hyponatremia has intimate relationship with age,duration of using mannitol,hypertensive intracerebral hemorrhage early clinical classification,bleeding broken into the ventricle.
4.Cost-Minimization Analysis of 3 Therapeutic Regimens for Severe Acne
Jiesi LI ; Zhenfeng LIU ; Xixiang SU ; Xueping LI
China Pharmacy 1991;0(02):-
0.05),and the costs were 437.54 yuan,492.24 yuan and 262.84 yuan,respectively. CONCLUSION:Ethinylestradiol cyproterone is the most economical therapeutic regimen for the indicated severe acne cases.
5.INVESTIGATION OF PEROXISOMES (MICROBODIES) IN HUMAN LIVER CELLS WITH ULTRACYTOCHEMISTRY AND STEREOLOGY
Xiaogang ZHENG ; Zhenfeng LU ; Taihe ZHANG ; Fukun LIU
Acta Anatomica Sinica 1954;0(02):-
Peroxisomes (microbodies) were studied with CATase, G-6-Pase, TPPase, CMPase cytochemistry and stereology by electron microscopy in 15 cases of normal human liver specimens. In human hepatocytes peroxisomes are ellipsoid or round intracellular bodies. They contain homogeneous fine granular matrix, and surrounded by unit membrane, and distribute randomly in the cytoplasm. By stereological analysis, the peroxisomes accounted for 1.33?0.38% of the cytoplasmic volume, their numerical density in spase was 9.76?1.63/100 ?m~3 cytoplasm, and the ratio of mitochondria to peroxisomes in quantity was 6.22?1.17. The result of G-6-Pase cytochemistry showed no luminal connection between endoplasmic reticulum and peroxisomes. The membrane similar to smooth endoplasmic reticulum seem to be connected with peroxisomes which was G-6-Pase negative, hence such membrane may be peroxisomal membrane system rather than smooth endoplasmic reticulum. The TPPase cytochemistry showed that peroxisomes did not connect with the Golgi complex structurally, and the Golgi complex may not be involved in the biogenesis of peroxisomes. Some figures resembled fission and budding of peroxisomes were viewed, and this finding suggested that new peroxisomes formed probably by division of preexisting peroxisomes.
6.Differential gene expression between Xinjiang Uygur and Han patients with ankylosing spondylitis
Zhenfeng LIU ; Zhiquan LIANG ; Hangang HONG ; Rui FANG ; Jiang ZHAO
Chinese Journal of Tissue Engineering Research 2016;20(15):2233-2240
BACKGROUND:Genetic factors, environment, chronic infection, and autoimmune disorders are considered to be involved in the pathogenesis of ankylosing spondylitis. Genetic factors play an important role in the pathogenesis of the disease. Ethnic and regional diversity of differentialy expressed genes has become research hotspot because of family aggregation and ethnic diversity of ankylosing spondylitis.
OBJECTIVE:To screen differentialy expressed genes in Xinjiang Uygur and Han patients with ankylosing spondylitis by microarray screening and compare differences in gene expressions.
METHODS: Uygur and Han patients with active ankylosing spondylitis in department of rheumatology of our hospital were randomly colected with five patients for each. In addition, three healthy volunteers were selected as controls. RNA from peripheral blood was extracted and used for microarray hybridization after probe preparation to screen differentialy expressed genes in ankylosing spondylitis samples and the microarray results were verified by semi-quantitative RT-PCR analysis.
RESULTS AND CONCLUSION: Twenty differentialy expressed miRNAs were screened in Uygur and Han patients with active ankylosing spondylitis (P < 0.05). From relationship analysis of target genes and miRNAs, 15 target genes corresponding to the 79 miRNAs involved in human leucocyte antigens and interleukins which linked to human immunity system were found. These findings suggest that differentialy expressed genes can be screened from Uygur and Han patients with ankylosing spondylitis.
7.Bone cementversus uncemented total hip arthroplasty in the middle-aged patients:5-year follow-up
Jingyang LI ; Zhenfeng LIU ; Weimin QIAO ; Rui FANG
Chinese Journal of Tissue Engineering Research 2015;(26):4107-4111
BACKGROUND:Currently, the study of total hip arthroplasty in elderly is more. Perioperative treatment and postoperative rehabilitation are increasingly perfect, but the study of middle-aged total hip arthroplasty is less, especialy long curative effect in postoperative and long-term folow-up stil has many problems to be solved. In China, there are few studies addressing how to select the prosthesis during total hip arthroplasty in middle-aged patients, which kind or material of prosthesis is better, so the evidence for clinical application is less. OBJECTIVE:To compare and analyze the repair effects of bone cement total hip arthroplasty and uncemented total hip arthroplasty in middle-aged patients. METHODS:A total of 60 middle-aged patients who received total hip arthroplasty in the Department of Orthopedics, Xinjiang Uygur Autonomous Region Chinese Medicine Hospital from January 2005 to January 2008 were folowed up for 5 years. Their mean age was (37±6) years. There were 32 cases undergoing uncemented total hip arthroplasty and 28 cases receiving bone cement total hip arthroplasty. At 6 months, 2 and 5 years after replacement, Harris score for recovery of limb function and imaging findings were compared and analyzed. RESULTS AND CONCLUSION: Harris score for recovery of limb function was significantly better in the uncemented total hip arthroplasty group than in the bone cement total hip arthroplasty group at 6 months, 2 and 5 years after replacement (P < 0.01). No complications were found at 6 months in the uncemented total hip arthroplasty group, but one case affected osteolysis at 2 years and two cases experienced prosthesis loosing at 5 years after arthroplasty. In the bone cement total hip arthroplasty group, two cases had osteolysis and one case had prosthesis loosing at 6 months after arthroplasty, three cases had prosthesis loosing at 2 years, and two cases affected linear permeability dissolvement at 5 years after arthroplasty. These findings suggest that uncemented prosthesis achieved a high rate of functional restoration and a low rate of complications in middle-aged patients. Uncemented total hip arthroplasty had satisfactory clinical and radiographic outcomes at a minimum of 5-year folow-up.
8.Application of soft tissue balancing technique in artificial joint replacement in Uighur with genu valgum
Heng JIA ; Zhenfeng LIU ; Leijiang LI ; Hangang HONG ; Rui FANG
Chinese Journal of Tissue Engineering Research 2015;(26):4144-4148
BACKGROUND:Because the geographical environment and diet cause obesity and osteoarthritis in Xinjiang Uygur local patients, the number of patients became more. At present, more and more patients received artificial knee replacement. How to master and further apply the technology of soft tissue balance during artificial knee replacement in patients of different physical fitness and nations becomes the focus of many scholars. OBJECTIVE:To analyze the clinical efficacy of soft tissue balance in Xinjiang Uygur patients with knee valgus in total knee replacement. METHODS:A total of 60 cases (72 knees) with severe knee osteoarthritis with a certain degree of knee valgus were subjected to total knee replacement through anterior lateral approach and individualized soft tissue balance from February 2009 to December 2010. Folow-up mode was the clinic visit. X-ray was used to measure tibiofemoral angle (i.e., the supplementary angle of the included angle between anatomic axis of femur and tibia). Clinical score and functional score of American knee society knee score were applied to assess knee joint function. RESULTS AND CONCLUSION:A total of 57 patients were folowed up for 6-35 months. The tibiofemoral angle decreased from 27.9° preoperatively to 5.6° postoperatively. Clinical score of American knee society knee score elevated from 16.7 points preoperatively to 87.5 postoperatively. Functional score of American knee society knee score elevated from 7.9 points preoperatively to 85.2 postoperatively. Significant differences in preoperative and final folow-up scores were detected (P < 0.01). Valgus deformity was corrected and joint stability was good in 57 patients after replacement. These findings indicate that in patients with severe knee osteoarthritis and valgus deformity, to select individualized treatment of soft tissue balance can effectively correct soft tissue imbalance and get more satisfactory clinical results.
9.Effect of Cluster Needling of Scalp Acupuncture Combined with Rehabilitation on Learning and Memory and Hippocampus Stromal Cell-derived Factor-1α mRNA in Rats after Focal Cerebral Ischemia
Zhenfeng ZHAO ; Fang WANG ; Hongguang LIU ; Hongmei LI ; Qiang TANG
Chinese Journal of Rehabilitation Theory and Practice 2011;17(4):307-309
ObjectiveTo investigate the effect of cluster needling of scalp acupuncture combined with rehabilitation(Tang's Approach) on learning and memory and hippocampus SDF-1α mRNA in rats after focal cerebral ischemia.Methods60 rats was randomly divided into 4 groups: the control group (n=6), the model group (n=18), the acupuncture with rehabilitation group (n=18) and rehabilitation group (n=18). Photochemical activity was adopted to induce focal cerebral ischemia model. The acupuncture with rehabilitation group, the model group and rehabilitation group was divided into 3 subgroups by 3,7,14 days. 24 hours after molded, the cluster needle of scalp point with Water maze training was used in the acupuncture with rehabilitation group, Water maze training was used in the rehabilitation group, but the model group did not intervene. The learning and memory in rats was evaluated by Y-maze, and the expression of hippocampus SDF-1α mRNA was observed by RT-PCR method on 3th, 7th, 14th day after infarction.ResultsOn 3th, 7th, 14th day after infarction, the scores of learning and memory in other groups was less than the control group(P<0.05), but the learning and memory in the acupuncture with rehabilitation group had been restored, and the difference was statistically significant compared with rehabilitation group (P<0.05) on 7th, 14th day after infarction; the expression of hippocampus SDF-1α mRNA has been risen in the acupuncture with rehabilitation group compared with the rehabilitation group (P<0.05), but the difference was not significant on 14th day after surgery(P>0.05).ConclusionThe hippocampus SDF-1α mRNA after focal cerebral ischemia increases by the cluster needle of scalp point with Water maze training, which may be one of the mechanisms to improve the learning and memory by Tang's Approach after focal cerebral ischemia.
10.Apoptosis-inducing effects of AgLA2 on SPC-A-1 cells and its mechanism in vitro
Huagang LIU ; Sanhai QIN ; Limin LIU ; Bolong WANG ; Yancheng LIU ; Zhenfeng CHEN
Chinese Pharmacological Bulletin 2003;0(11):-
Aim To investigate the apoptosis-inducing effects of AgLA2 on lung carcinoma cells SPC-A-1 and its mechanism in vitro.Methods The MTT assay was used to assess the proliferation of SPC-A-1 cells treated with AgLA2 in vitro.Apoptosis-inducing effects was investigated by DNA agarose gel electrophoresis,cell morphology and Elisa.RT-PCR was used to measure the expression of bcl-2 and bax mRNA,and immunocytochemistry was used to measure the expression of bcl-2 and bax protein.Results The IC50 of AgLA2 to SPC-A-1 cells was(3.447?0.436)mg?L-1.Treated with AgLA2,typical nuclear chromatine condensation and fragmentation were observed.The concentration of Caspase-3 in the group treated with AgLA2 was higher than that of the control group.Treated with AgLA2,bcl-2 mRNA,protein expression decreased while bax mRNA,protein expression increased.Conclusions AgLA2 can inhibit proliferation and induce apoptosis of SPC-A-1 cells.Its mechanism of action may be related to changing the ratio of bax/bcl-2 and the set-point of apoptosis,making the apoptosis power hold dominance.