2.Activation of cAMP-PKA signal pathway by CCK-8 in rat pulmonary interstitial macrophages
Weijuan GAO ; Shunjiang XU ; Bin CONG ; Shujin LI ; Chunling MA
Chinese Pharmacological Bulletin 1987;0(03):-
0.05); but significantly increased cAMP content and PKA activity at high concentration [(10-9~10-5) mol?L-1] (compared with normal control group:P
3.Effects of DAG-PKC signaling pathway on cAMP-PKA signaling pathway in anti-inflammatory effects of CCK-8
Weijuan GAO ; Shunjiang XU ; Bin CONG ; Shujin LI ; Chunling MA
Chinese Pharmacological Bulletin 2003;0(09):-
0.05).But PMA increased and SC-3088 decreased cAMP content and PKA activity in LPS-stimulated rat PIMs(P
5.Inhibitory effects of CCK-8 on NF-?B activities stimulated by LPS in rat PIMs
Weijuan GAO ; Shunjiang XU ; Bin CONG ; Shujin LI ; Chunling MA ; Jinrong XU ; Yuxia YAO ; Zhenyong GU
Chinese Journal of Pathophysiology 2000;0(10):-
AIM: To investigate the inhibitory effects of cholecystokinin octapeptide(CCK-8) on nuclear factor-?B(NF-?B) activities stimulated by lipopolysaccharide(LPS) by using forskolin,the activator of adenylate cyclase,and PKA inhibitor H-89 in rat pulmonary interstitial macrophages(PIMs).METHODS: PIMs were isolated and purified.EMDA was applied to detect NF-?B activities and Western blotting was used to analyze the I?B-? protein level in rat PIMs.RESULTS: The NF-?B activity was not detected in normal control rat PIMs.The NF-?B activity in LPS-treated rat PIMs was obviously higher than that in control group(P0.05).The NF-?B activity in CCK+LPS group and LPS+Fsk group were obviously lower than that in LPS group(P
6.Change of expression of cell adhesion molecules CD11a and CD49d in patients with chronic aplastic anemia before and after therapy.
Journal of Experimental Hematology 2003;11(6):659-661
To explore the cell adhesion molecules (CAMs) CD11a and CD49d in patients with chronic aplastic anemia (CAA) and its clinical implications, the expression of CD11a and CD49d in mononuclear cell (MNC) of bone marrow (BM) and peripheral blood (PB) were measured using APAAP techniques in 20 patients with CAA before and after SSL/C therapy. The results showed that the expression of CD11a and CD49d in MNC of BM and CD11a in MNC of PB increased significantly (P < 0.05) after SSL/C therapy, and there was no significant change of CD49d in MNC of PB in both groups. In conclusion, the decrease of CAMs of CD11a and CD49d participated in the pathogenesis of CAA. The expression of CAMs increases with effective treatment, so the restoration or improvement of altered CAMs of CAA might be beneficial to the proliferation and differentiation of hematopoietic stem cell, and improvement of hematopoiesis in CAA.
Adolescent
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Adult
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Aged
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Anemia, Aplastic
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blood
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Blood Cell Count
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CD11a Antigen
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analysis
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Child
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Chronic Disease
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Female
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Humans
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Integrin alpha4
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analysis
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Leukocytes
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chemistry
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Male
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Middle Aged
7.Imageological study of rotational alignment reference landmarks of the proximal tibia in total knee arthroplasty
Baohui ZHAO ; Baicheng CHEN ; Cong WANG ; Mo DENG ; Bao REN ; Jiali XU ; Wenshan GAO
Chinese Journal of Orthopaedics 2012;32(9):872-875
Objective To investigate the role of rotational alignment reference landmarks of the proximal tibia in total knee arthroplasty.Methods Fifteen healthy adult volunteers were enrolled in this study,including 10 males and 5 females,aged from 21 to 38 years (average,28.1±6.0).CT scans of 26 knees were taken as the knees were placed in full extension.Two anteroposterior axes were drawn on the CT images:one line connected the middle of the posterior cruciate ligament insertion site and the medial edge of the patellar tendon,and another line connected the middle of the posterior cruciate ligament insertion site and the middle-medial 1/3 of the patellar tendon.The surgical epicondylar axis was also drawn on the CT images.Angles were measured between a line perpendicular to the surgical epicondylar axis and the two anteroposterior axes,and the angles were compared with the ideal tibial rotational alignment reference axis (0°).Results Angles between the line perpendicular to the surgical epicondylar axis and the line connecting the middle of the posterior cruciate ligament insertion site and the medial edge of the patellar tendon averaged 0.7°±2.8° (range,-5.1°-5.8°),there was no significant difference compared with 0°.Angles between the line perpendicular to the surgical epicondylar axis and the line connecting the middle of the posterior cruciate ligament insertion site and the middle-medial 1/3 of the patellar tendon averaged 6.9°±5.3° (range,-3.4°-14.1°),there was significant difference compared with 0°.Significant difference existed in angles between the two anteroposterior axes and the line perpendicular to the surgical epicondylar axis.Conclusion The line connecting the middle of the posterior cruciate ligament insertion site and the medial edge of the patellar tendon is a more reliable reference axis for the tibial component rotational alignment,which makes the femoral and tibial components in a more matching rotational position.
8.Efficiency comparison between two preimplantation genetic diagnostic methods for chromosomal translocation carriers
Yanwen XU ; Xiulian REN ; Ying LIU ; Yanhong ZENG ; Cong FANG ; Ling GAO ; Canquan ZHOU ; Guanglun ZHUANG
Chinese Journal of Obstetrics and Gynecology 2008;43(8):576-580
Objective To compare the diagnostic efficiency between blastomere preimplantation genetic diagnosis (PGD) and polar body PGD for chromosomal translocation carriers. Methods Group A had 8 cycles using whole painting probes for the first polar body diagnosis, while group B had 29 cycles using two subtelomeric probes and one centromeric probe for the blastomere diagnosis. Results The fertilization rate of group A was significantly lower than group B [66. 1% (72/109) vs 85.2% (304/357) , P < 0.05]. There was no significant difference in the successful biopsy rate between two groups. However, group A had a significantly higher loss rate during fixation and higher no signal rate after fluorescence in situ hybridization [ FISH, 9. 6% (12/104) vs 1.6% (4/252), 11.2% (10/89) vs 3.0% (7/233) ]. Totally, the diagnostic efficiency in group A (72. 5% ,79/109 ) was significantly lower than that in group B( 89. 8%, 230/256, P < 0. 05 ). Although both the clinical pregnancy rate( 3/7 ) and implantation rate( 22. 2% ,4/18 ) of group A were higher, the differences were not statistically significant ( P > 0.05 ). Conclusion Both methods can be used efficiently in the PGD for chromosomal translocation carriers. Blastomere PGD has a higher diagnostic rate.
9.Study on the relationship between protein expression and gene abnormalities of myc, bcl-2 and bcl-6in diffuse large B-cell lymphoma
Cong BAI ; Min LI ; Cuiling LIU ; Zifen GAO ; Xin HUANG ; Jing XU
Journal of Leukemia & Lymphoma 2017;26(3):152-155
Objective To study the frequency of diffuse large B-cell lymphoma (DLBCL) with multi-genetic alteration, and its correlation with c-myc, bcl-2 and bcl-6 protein expression. Methods 50 cases diagnosed with DLBCL from January 2012 to December 2016 were collected. The expression of c-myc, bcl-2 and bcl-6 was analyzed by immunohistochemistry. Interphase fluorescence in situ hybridization (I-FISH) analysis was performed to identify the genetic alteration of c-myc, bcl-2 and bcl-6. Results In all cases, there were 27 males and 23 females with a median age of 50 years (range: 3-85 years). 23 (46.00 %) cases were defined as primary nodal DLBCL and 27 (54.00 %) cases were primary extra-nodal DLBCL, with gastrointestinal tract (48.15 %, 13/27) being the most common site of involvement. c-myc protein expression was detected in 94.00 % (47/50) cases, in which 82.00 % (41/47) cases exhibited high levels of c-myc expression with positive nuclear staining observed in over 40.00 % of tumor cells. The positive rate of bcl-2 protein was 84.00 % (42/50), 76 % (38/50) cases presented with high-level bcl-2 expression. Concurrent high expression of c-myc and bcl-2 were presented in 18 cases (36.00%). FISH analysis demonstrated c-myc gene rearrangement in 7 cases (14.00 %) and amplification in 2 cases (4.00 %). bcl-2 gene rearrangement was detected in 6 cases (12.00 %) and 4 cases (8.00 %) exhibited gene amplification. bcl-6 gene rearrangement was identified in 8 cases (16.00%), amplification in 3 cases (6.00%), and 1 case concomitantly harbored the rearrangement and amplification of bcl-6. Multi-genetic alterations were defined in 4 cases with 3 cases fulfilling the criteria for double-hit lymphoma (DHL) and 1 case for triple-hit lymphoma (THL). For the cases with concomitant high-level expression of c-myc and bcl-2 proteins, 3 cases (16.67 %) was detected with multi-genetic alterations, including 2 cases for DHL and 1 case for THL. Conclusions The proportion of DLBCL with multi-genetic alterations is 8.00 % in this study. The genetic alterations are not consistently correlated with the protein expression. The molecular genetic testing is reliable for the identification of DHL.
10.Synergistic effect of Apo2L and chemotherapeutic agents on leukemia cells.
Ling-ling WANG ; Mao-hong ZHANG ; Cong-gao XU
Chinese Journal of Hematology 2003;24(11):593-595
OBJECTIVETo explore if the antileukemic drugs Vp16 or Ara-C are able to upregulate DR5 gene expression and enhance Apo2L-induced apoptosis of HL-60 cells.
METHODSCell apoptosis was determined by flow cytometry after annexin V/PI staining, the effect of Apo2L on fresh leukemia cells by MTT reduction assay, the expression of DR5 gene in HL-60 cells by semi-quantitative RT-PCR.
RESULTS1. Apo2L induced apoptosis of HL-60 cells in a dose-dependent manner. 2. Apo2L inhibited the proliferation of fresh leukemia cells, but there was difference among different subtypes. 3. Vp16 or Ara-C upregulated DR5 gene expression and augmented Apo2L-induced apoptosis in HL-60 cells.
CONCLUSIONApo2L could induce apoptosis of HL-60 cells and inhibit the proliferation of fresh leukemia cells. Ara-C or Vp16 upregulated DR5 gene expression and increased the sensitivity of HL-60 to Apo2L-induced cytotoxicity. Apo2L might be a promising antileukemic agent for the treatment of leukemia.
Antineoplastic Agents ; pharmacology ; Apoptosis Regulatory Proteins ; Cytarabine ; pharmacology ; Drug Synergism ; Etoposide ; pharmacology ; Female ; HL-60 Cells ; Humans ; Leukemia ; drug therapy ; Male ; Membrane Glycoproteins ; pharmacology ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; Receptors, Tumor Necrosis Factor ; genetics ; TNF-Related Apoptosis-Inducing Ligand ; Tumor Necrosis Factor-alpha ; pharmacology