2.Insulin induces PKC-dependent proliferation of mesenteric vascular smooth muscle cells from hypertensive patients
Xukai WANG ; Yan WANG ; Chenming YANG ; Ying WAN ; Xianwen JI
Journal of Geriatric Cardiology 2006;3(2):100-106
Background and objectives Proliferation of human vascular smooth muscle cells (VSMCs) induced by hyperinsulinemia is a very common clinical pathology. Extensive research has focused on PKC (Protein kinase C)-MAPK (mitogen-activated protein kinase)intracellular signal transduction and the phenotypic modulation accompanied by reorganization of intracellular F-actins in VSMCs.Methods DNA synthesis, signaling of ERK1/2 MAPKs, and changes in α-smooth muscle (SM) actin and F-actin were studied in hypertensive and normotensive human arterial VSMCs exposed to insulin and PMA with and without the PKC inhibitor, GF109203X.Results Differences among cell types in MAPK signaling, α-SM actin, and F-actin isoforms in VSMCs harvested from the arteries of patients with essential hypertension (EH) and normotension (NT) were identified in response to insulin treatment. Proliferation and activation of MAPK were more pronounced in EH VSMCs than in NEH VSMCs. Insulin exposure decreased expression of α-SM actin and was accompanied by rearrangement of intracellular F-actins in VSMCs, especially in the EH group. These effects were reversed by treatment with the PKC inhibitor. Conclusions Human mesenteric VSMCs of EH and NT patients differed in proliferation, MAPK signaling, and degree of changes in α-SM actin and F-actin isoforms immediately following insulin exposure in vitro.
3.Identification and application of three anti-HCMVpp65 McAbs
Chun-Yan QIAN ; Sheng-Nian WANG ; Yue ZHANG ; Ying-Ying CHEN ; Yan SHI ; Yan HE ; Hao LU ; Yu-Hua JI ;
Chinese Journal of Laboratory Medicine 2001;0(02):-
0.05).Conclusion Three Hybridoma cell lines which secrete the target antibodies with satisfied affinities and specificities have been successfully raised,which provides a basis to produce a domestic-made HCMVpp65 antigen diagnosis kit.
4.Effects of Hypericum perforatum L. extract on anti-stress response. In normal mice and antioxidant activity in exhaustive exercise mice.
Ting-Ting YE ; Le LI ; Ying-Ying LIAO ; Ji-Zhong YAN ; Sheng-Qiang TONG
Chinese Journal of Applied Physiology 2014;30(4):332-334
Animals
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Antioxidants
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metabolism
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Fatigue
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blood
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Female
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Hypericum
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chemistry
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Male
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Mice
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Mice, Inbred ICR
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Physical Conditioning, Animal
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Plant Extracts
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pharmacology
6.Study on pulmonary function changes in infants with human bocavirus or mycoplasma pneumonia
Ying CHEN ; Fang YING ; Ling LI ; Meijuan WANG ; Yongdong YAN ; Hong XU ; Guoying GU ; Wei JI
Journal of Clinical Pediatrics 2014;(9):867-871
Objective To discuss the pulmonary function change in infants with human bocavirus (HBoV) pneumonia or mycoplasma pneumonia (MP) and its clinical signiifcance. Methods One hundred and forty infants under 3 years old who were admitted due to pulmonary infection were recruited from January, 2013 to October, 2013. Among them, HBoV-DNA was detected in 64 cases, and MP-DNA was detected in 76 cases. Thirty eight normal age-matched infants were selected as controls. The shape of tidal breathing lfow-volume loops (TBFVLs) and change of every index were measured with a Pulmonary Testing System (Jaeger MasterScope). Results The ratio of time to peak tidal expiratory lfow (PTEF) to total expiratory time (TPTEF/TE), the ratio of VPTEF to expiratory volume (VPTEF/VE), tidal expiratory lfow at 25%of the remaining tidal volume (TEF25%) and the ratio of TEF25%to PTEF (25/PF) were signiifcantly decreased in infants with HBoV and MP infection as compared with healthy infants (P<0.05). However, there was no signiifcant difference of the above indices between infants with HBoV and MP infection (P>0.05). The shape of TBFVLs in infants with HBoV and MP pneumonia was changed and characterized by left-shifted PTEF and trough-like concave in descending limb. The PTEF was decreased in infants with pulmonary infection. Conclusions HBoV or MP infection results in impaired pulmonary function with manifestations of obstruction in small airway. The shape of TBFVLs in infants with HBoV and MP pneumonia is characterized by left-shifted PTEF and trough-like concave in descending limb.
7.Research progress on the material basis and pharmacological effects of Pien Tze Huang
Yan-quan YANG ; Jian-guo SUN ; Ji-ye A ; Guang-ji WANG ; Ying PENG
Acta Pharmaceutica Sinica 2023;58(8):2155-2167
The medicinal history of Pien Tze Huang is long, and it is the only "double top secret" variety of technology and formula at present. It has the effects of clearing heat and detoxifying, detumescence and pain, cooling blood and removing blood stasis. At present, researchers have analyzed and identified some compounds in Pien Tze Huang and its precious medicinal materials, such as Panax notoginseng, calculus bovis, snake gall and musk, and conducted activity screening, pharmacokinetics and pharmacological related studies on these chemical components. It was found that Pien Tze Huang had a significant effect on the treatment of acute and chronic hepatitis, ulcer, colon cancer, liver cancer and other diseases. The purpose of this paper is to systematically discuss the research achievements of researchers in recent years on the material basis, pharmacological effects and clinical application of Pien Tze Huang, with a view to providing ideas for the further research of Pien Tze Huang.
8.Over expression lung cancer-1 is sa soic ated with poor prognosis in colorectal cancer
Jinglei LIU ; Ji JIANG ; Mingyan ZHANG ; Ying WANG ; Yan YOU ; Yan WANG
Practical Oncology Journal 2015;29(5):390-394
Objective The overexpression lung cancer1( OLC1) protein is overexpressed in a variety of human tumors.The purpose of the present study is to determine whether increased expression of OLC1 is associat-ed with colorectal cancer.Methods OLC1 expression was assayed in 150 colorectal cancer tissues by immuno-histochemical staining(IHC).Multivariate and univariate analyses were performed to determine the association between OLC1 expression and prognosis.Results Immunohistochemical results revealed that 107 out of 150 colorectal cancer patients had increased levels of OLC1.OLC1 expression was significantly correlated with UICC stage(P<0.001)and histological differentiation(P<0.001)in colorectal cancer patients.The 5-year overall survival( OS) rates in patients with strong positive and less OLC1 staining were 16.6%and 95.3%,respectively (P<0.0001).Conclusion OLC1 overexpression is an important factor in colorectal carcinoma prognosis and can be an interesting potential novel biomarker for colorectal cancer.
9.Endoplasmic reticulum stress mediates lipopolysaccharide-induced apoptosis in rat hepatocyte.
Ying-Lei JI ; Jun YAN ; Yan-Sha WANG ; Yi-Chang LIU ; Zhen-Yong GU
Journal of Forensic Medicine 2014;30(1):13-18
OBJECTIVE:
To investigate the role of endoplasmic reticulum stress (ERS) in lipopolysaccharide (LPS)-induced hepatocyte apoptosis.
METHODS:
Cells of the rat hepatocyte line BRL were cultured. The hepatocytes were treated with LPS, ERS inducer thapsigargin (TG), and ERS inhibitor 4-phenylbutyric acid (4-PBA), respectively or in their different combination. The cell viability was measured by MTT assay. The cyto-nuclear morphological changes of apoptosis cells were detected by the fluorescent dye Hoechst 33258. The apoptosis rate was assessed by flow cytometry with Annexin V-FITC/PI double-staining. Expressions of GRP78 as ERS marker protein, CHOP, caspase-12 and cleaved-caspase-3 as ERS related protein were detected by Western blotting.
RESULTS:
LPS could cause a decrease in cell viability and an increase in apoptosis rate in a dose- and time-dependent manner. The expression of GRP78, CHOP, caspase-12 and cleaved-caspase-3 proteins were significantly increased with LPS treatment. TG led to a marked decrease in cell viability and an increase in apoptosis rate, which aggravated the hepatocyte injury induced by LPS; whereas 4-PBA alleviated LPS-induced apoptosis.
CONCLUSION
ERS mediates LPS-induced hepatocyte injuries, indicating that ERS may play a vital role in the pathogenesis of LPS-induced hepatocyte injuries.
Animals
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Apoptosis
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Caspase 3
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Cell Survival
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Endoplasmic Reticulum Chaperone BiP
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Endoplasmic Reticulum Stress
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Heat-Shock Proteins
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Hepatocytes
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Lipopolysaccharides
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Phenylbutyrates
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Rats