1.Experimental study on intravascular ultrasonic features of unstable atherosclerotic plaques
Wenqiang CHEN ; Yun ZHANG ; Mei ZHANG
Chinese Journal of Ultrasonography 1997;0(06):-
0.05 ).However,there were more eccentric plaques in ruptured than in non-ruptured groups ( P
2.Intravascular ultrasound versus pathologic analysis in detecting atherosclerotic plaque disruption and arterial thrombosis
Wenqiang CHEN ; Yun ZHANG ; Mei ZHANG
Chinese Journal of Ultrasonography 2003;0(10):-
Objective To explore the value of intravascular ultrasound (IVUS) in diagnosing plaque disruption and arterial thrombosis.Methods Balloon-induced arterial wall injury and then feeding on a diet of 1% cholesterol for 8 weeks, 17 New Zealand white rabbits were established as atherosis(AS) models.At the end of the eighth week, the resulting plaques were incubated transluminally with recombinant adenovirus carrying a p53 transgene. After two weeks, the rabbits underwent pharmacological triggering with Russell viper venom(RVV) and histamine. IVUS was used before and after the rabbits were triggered pharmacologically. The value of IVUS in diagnosing plaque disruption and arterial thrombosis was derived by comparing the results of IVUS with pathologic findings. Results IVUS found that plaques disruption and thrombosis occurred in 12 of the 14 rabbits, totally 18 thrombi. A histologically confirmed plaque disruption and intraluminal thrombus were visualized in 12 of the 14 rabbits, totally 20 thrombi. By comparing the results of IVUS with histopathology, the true positive rate was 85% and false negative rate was 15%, the sensitivity and specificity of IVUS were respectively 85% and 67%. IVUS data correlated well with the histopathology regarding thrombus length(r=(0.73),P(0.05)). Conclusions IVUS can detect plaque disruption and arterial thrombosis.
3.Recent progress in the investigation of VEGF and PEDF of proliferative diabetic retinopathy
Xiao-Hong, CHEN ; Yun-Peng, WANG ; Mei-Zhu, CHEN
International Eye Science 2015;(1):55-57
?Proliferative diabetic retinopathy ( PDR ) is a group of disease characterized by neovascular disease complication of diabetes mellitus. Neovascular diseases of eye are one of the major causes of blindness of the world. Recent studies showed that vascular endothelial growth factor ( VEGF) and pigment epithelium-derived factor ( PEDF ) are now accepted as the key cytokine in the development of diabetic retinopathy. Recent progress in the investigation of VEGF and PEDF of PDR are summarized in this review.
4.Efficacy observation of Guan's quadruple therapy for kidney disease on the treatment of chronic renal failure.
Zheng ZUO ; Xiao-Mei CHEN ; Yun-Wu JIANG ; Xiao-Yun TANG ; Zun-Xin GUAN
Chinese Acupuncture & Moxibustion 2014;34(7):641-645
OBJECTIVETo compare the differences in the clinical efficacy between Guan's quadruple therapy for kidney disease and the conventional western medication in the treatment of chronic renal failure (CRF).
METHODSEighty patients were randomized into an observation group and a control group, 40 cases in each one. In the observation group, besides the physician instruction of low protein and low phosphorus diet in the two groups, Guan's quadruple therapy for kidney disease was applied, including (1) the isolated herbal moxibustion at Shenshu (BL 23) and Pishu (BL 21), or Ganshu (BL 18), Zusanli (ST 36) and Guanyuan (CV 4) alternatively; (2) acupuncture at the auricular points such as shen (CO10), jiaogan (AHR6), Shenshangxian (TG2), fei (CO14) and pizhixia (AT4); (3) injection of mixture of astragalus injection and lidocaine injection at Feishu (BL 13), Pishu (BL 21), Shenshu (BL 23) and the others; (4) modified Shenshuai Yihao decoction according to syndrome differentiation. In the control group, the conventional western medication was used. After 6 months of treatment, the differences were observed between the two groups in the clinical efficacy, serum creatinine (Scr), blood urea nitrogen (BUN), endogenous creatinine (Ccr) and 24 h urine protein quantitation (UPQ).
RESULTSIn the observation group, after treatment, the remarkably effective rate was 50.0% (20/40) and the total effective rate was 82.5% (33/40), which were superior to 25.0% (10/40) and 45.0% (18/40) in the control group (both P < 0.05). After treatment, the levels of Scr, BUN and 24 h UPQ were reduced apparently (all P < 0.05), and the level of Ccr was increased apparently in the two groups (both P < 0.05). After treatment, the levels of Scr, BUN and 24 h UPQ were reduced much more apparently in the observation group as compared with those in the control group (all P < 0.05).
CONCLUSIONGuan's quadruple therapy for kidney disease achieves a better efficacy on CRF compared with the conventional western medication. This therapy improves renal functions, relieves clinical symptoms and physical signs and benefits the life quality of patients.
Acupuncture Therapy ; Adult ; Combined Modality Therapy ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Kidney Failure, Chronic ; drug therapy ; physiopathology ; therapy ; Kidney Function Tests ; Male ; Middle Aged ; Young Adult
5.Clinical effect of vitrectomy with intravitreal ranibizumab for diabetic retinopathy
Yun-Peng, WANG ; Mei-Zhu, CHEN ; Guo-Cang, CHEN ; Yan-Jin, CHEN
International Eye Science 2014;(7):1257-1259
AlM: To observe clinical effect of vitrectomy with intravitreal ranibizumab for the treatment of diabetic retinopathy ( DR) .
METHODS:From February 2011 to February 2013, there were 90 cases in our hospital diabetic retinopathy patients withvitrectomy surgery. lt was randomly divided into observation group ( 45 cases ) and control group ( 45 cases ) . Two groups of patients were performed vitrectomy. Patients in observation group were injected intravitreal ranibizumab before surgery, then vitrectomy was underwent for diabetic retinopathy. Vitrectomy was only underwent in control group.
RESULTS:The patients in observation group with good effect accounting for 71% (32/45) and good rate was 89%(40/45 ), which were significantly higher than that in control group 51% ( 23/45 ) , 71% ( 32/45 ) . Differences were statistically significant ( P < 0. 05 ). Amount of bleeding was 9. 64 ± 2. 27mL, intraocular pressure was 13. 64 ± 3. 27mmHg. lt was significantly less than that in control group 10. 21 ± 3. 14mL, 16. 00 ± 3. 14mmHg. Differences were statistically significant (P<0. 05).
CONCLUSlON: The vitrectomy with intravitreal ranibizumab treatment of diabetic retinopathy can not only reduce blood loss, but also reduce edema and improve effectiveness and safety. lt's worth recommending for clinical practice.
6.Clinical observation on effect of shenle capsule in treating mesangial proliferating glomerulonephritis.
Chen-yun WEI ; Xiang-mei CHEN ; Yan-ping ZHANG
Chinese Journal of Integrated Traditional and Western Medicine 2002;22(5):341-345
OBJECTIVETo study the therapeutic effect of Shenle capsule (SLC) in treating mesangial proliferating glomerulonephritis (MsPGN) and to explore its therapeutic mechanism and clinical indication.
METHODSAdopting case control method, taking angiotensin-converting enzyme inhibitor (benazepril) as control agent, the 142 cases of MsPGN were randomly divided into 3 groups, treated with SLC (Group A, n = 36), SLC plus benazepril (Group B, n = 68) and benazepril alone (Group C, n = 38) respectively. Changes of fibrinogen, lipids, renal function and urinary protein were observed.
RESULTSThe total effective rate in Group A was higher than that in Group C, but with insignificant difference. The total effective rate in Group B after 3 courses of treatment was 89.74%, which was higher than that in Group C and Group A (P < 0.05). Levels of cholesterol (CH), triglyceride (TG), serum creatinine, fibrinogen and urinary protein (UP) were significantly lowered in Group A after treatment, with the levels of CH, TG and UP lower than those in Group C, while CH, TG and fibrinogen were unchanged in Group C after treatment.
CONCLUSIONSLC is superior in higher efficacy and less side-effects in treating MsPGN, its effect is related with the degree of kidney pathological changes, it is more effective in treating patients with mild pathological change than in those with severe change. The outcome of combined use of SLC and angiotensin-converting enzyme inhibitor would be better.
Adolescent ; Adult ; Aged ; Angiotensin-Converting Enzyme Inhibitors ; therapeutic use ; Benzazepines ; therapeutic use ; Child ; Cholesterol ; blood ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Glomerulonephritis, Membranoproliferative ; blood ; drug therapy ; Humans ; Male ; Middle Aged ; Phytotherapy ; Proteinuria ; drug therapy ; Triglycerides ; blood
7.Experimental study on induction of atherosclerotic plaque instability in rabbits after transfer of wild-type p53 gene
Wenqiang CHEN ; Yun ZHANG ; Mei ZHANG ; Xiaoping JI ; Chen LIN ; Yongfeng ZHU ; Xuedong SANG
Chinese Journal of Pathophysiology 1989;0(05):-
AIM: To study the apoptotic role of wild-type p53 in induction of plaque instability in atherosclerotic rabbits. METHODS: Fifty-four New Zealand White rabbits underwent balloon-induced abdominal aortic wall injury and then were fed on a diet of 1% cholesterol. At the end of the eighth week, the rabbits were randomly divided into two groups: group A and group B. Recombinant adenovirus carrying p53 and ?-galactosidase (LacZ) genes were injected in group A and B, respectively. Two weeks later, 10 rabbits each in group A and B was killed and the remaining rabbits all underwent pharmacological triggering with injection of Chinese Russell's viper venom and histamine. RESULTS: Compared with group B, p53 gene over-expression in group A resulted in a marked increase in number of positive apoptotic cells (2.5%?0.8% vs 1.0%?0.3%, P
8.Case Report of Peliosis Hepatic in Child and Its Literature Review
zhao-yuan, QIN ; shu-mei, CHEN ; rui-de, HU ; xiao-yun, JIANG ; mei-na, LIU ; zhen-yu, SHEN
Journal of Applied Clinical Pediatrics 2006;0(19):-
Objective To report a peliosis hepatic in child and review literature and discuss.Methods Case history was inquired.Physical,labtoratory,imagement and histopathology of liver biopsy(HE staining) were examed.Results A 4-year old girl appeared dermatitis with erythema and herpes at local skin where was bit by insect before onset.The girl appeared fever,cough,then abdominal pain,hepatomegaly,pleural effusion and ascites.Lab examination revealed slight elevation of aspartate transaminase,?-glutamyltranspeptidase and alkaline phosphatase.The liver B-mode ultrasonography and CT scan revealed hepatomegaly with density heterogeneity of the parenchyma.The liver biopsy revealed many small capsule filled with blood cells.Conclusions Clinical characteristics of the disease are fever,upper abdomen pain,janundice,ascites and hepatomegaly.The diagnosis shall be combined with the pathologic biopsy of liver.
9.Cloning and analysis of squalene synthase (HsSQS1) gene in Huperzia serrata.
Xiu-mei YIN ; Zhi-chuan BAI ; Yun-yun NIU ; Hong-mei LUO ; Shi-lin CHEN
Acta Pharmaceutica Sinica 2012;47(8):1079-1084
Squalene synthase (SQS) is a key enzyme in plant terpenoid biosynthetic pathway. This study focused on cloning and analysis of Huperzia serrata SQS (HsSQS1) gene. After searching the transcriptome dataset of H serrata, one unique sequence encoding SQS was discovered. The primers were designed according to the transcript sequence of HsSQS1 from the H. serrata transcriptome dataset. The open reading frame of HsSQS1 was cloned using RT-PCR strategy. The bioinformatic analysis of this gene and its corresponding protein were performed. The cDNA (named as HsSQS1) contains a 1263 bp open reading frame and encodes a predicted protein of 420 amino acids. The GenBank accession number for this gene is JQ004938. HsSQS1 contains two transmembrane regions, without signal peptide. The conserved domain of squalene synthase was presented in HsSQS1. HsSQS1 was more abundant in H. serrata root than in leaf and stem. This study cloned and analyzed squalene synthase gene from H. serrata for the first time. The result will provide a foundation for exploring the mechanism ofterpenoid biosynthesis in H. serrata plants.
Amino Acid Sequence
;
Biosynthetic Pathways
;
Cloning, Molecular
;
DNA, Complementary
;
genetics
;
Expressed Sequence Tags
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Farnesyl-Diphosphate Farnesyltransferase
;
genetics
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isolation & purification
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metabolism
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Genes, Plant
;
genetics
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Huperzia
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enzymology
;
genetics
;
Molecular Sequence Data
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Open Reading Frames
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Phylogeny
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Plant Leaves
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enzymology
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Plant Roots
;
enzymology
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Plant Stems
;
enzymology
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Plants, Medicinal
;
enzymology
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genetics
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Triterpenes
;
chemistry
10.The effects of post space preparation and post restoration on apical sealing ability.
West China Journal of Stomatology 2009;27(5):512-515
OBJECTIVETo investigate the effects of post space preparation and post restoration on apical sealing ability.
METHODS60 extracted mandibular premolars each with single canal were selected. All canals were prepared by manual ProTaper instrument using crown-down technique. The samples were the divided into 5 groups randomly. Group A: 20 samples, the immediate post space preparation group; group B: 20 samples, the delayed post space preparation group; group C: 10 samples, the intact group; group D: 5 samples, a positive control; group E: 5 samples, a negative control. There were two subsets in groups A and B which were restored by temporary materials (A1 and B1) or fiber post and cores (A2 and B2). Indian ink dye method was used to measure the apical leakage in stereomicoscope.
RESULTSThe mean length of dye penetration for group A1, A2, B1, B2 and C were (0.52 +/- 0.47), (0.49 +/- 0.44), (1.17 +/- 0.77), (1.12 +/- 0.54), and (0.23 +/- 0.40) mm, respectively. Positive group demonstrated maximum dye penetration, and negative group showed no dye penetration. There was no statistically significant difference between group A1, A2 and group C (P>0.05). However, there were statistically significant differences between group B and group A, C (P<0.05). The length of dye penetration for group B was longer than that for group A and C.
CONCLUSIONThe sealing ability was decreased after delayed post space preparation when using the AH-Plus sealer.
Dental Leakage ; Humans ; Root Canal Filling Materials ; Root Canal Obturation