1.Nicotinic acetylcholine receptor and clinical diseases
Basic & Clinical Medicine 2006;0(05):-
Nicotinic acetylcholine receptors(nAChRs) construct a family of ligand-gated ion channels. nAChRs distribute extensively in central nerve system, neuromuscular junctions and surface of other cells. The differences on subunits and tissue location determinate the diversity of receptor functions. Early research has found that nerve signal transmission is its main function and recent research found it also the key receptor of cholinergic anti-inflammatory pathway. To illuminate the physiological mechanism of these functions has great clinical significance for the treatment of correlated diseases such as myasthenia gravis, epilepsy and multiple organ failure.
2.The effect of STAT3 decoy oligodeoxynucleotides on the expression of IFI16 in peripheral blood mononuclear cell of patients with systemic lupus erythematosus
Chinese Journal of Rheumatology 2003;0(10):-
Objective To investigate the effect of signal transducer and activator of transcription 3 (STAT3) decoy oligodeoxynucleotides (ODNs) on the expression of IFI16 in the peripheral blood mononuclear cell of patients with systemic lupus erythematosus (SLE).Methods STAT3 decoy ODNs was transfected to PSMC in vitro,and RT-PCR was used to semiquantitatively analyze the IFI16 mRNA in the peripheral blood mononuclear cell (PBMC) before and after the transfection.Results The mean level of IFI16 mRNA in ac- tive SLE group and inactive SLE group were much higher than that of normal control.The difference was sig- nificant (P<0.05).However,there was no statistical difference between active and inactive SLE group (P>0.05).After being transfected by STAT3 decoy ODNs,the level of IFI16 mRNA in active and inactive SLE group were markedly decreased comparing with negative controls.The difference was significant (P<0.05). However,the difference was not significant in normal control (P>0.05).Conclusions The abnormal overex- pression of IFI16 mRNA in PBMC of patients with SLE suggests that IFI16 may contribute to the pathogenesis of SLE and the overexpression of IFI16 may be mediated through JAK-STAT3 pathway.
3.Effect of 5 -aminolevulinic acid mediated photodynamic therapy in combination with recombinant hu-man interferon alpha 2b ointment on basal cell carcinoma in elderly
Junmin ZHOU ; Shaochun DAI ; Sen ZHOU
Practical Oncology Journal 2016;30(5):396-399
Objective To evaluate the therapeutic effect of 5-aminolevulinic acid mediated photody-namic therapy(ALA-PDT)in combination with recombinant human interferon alpha 2b ointment on superficial basal cell carcinoma(BCC)in elderly.Methods A total of 143 elderly patients with superficial BCC was ran-domly divided into PDT group(n=72 cases)and the surgical group(n=71 cases).The patients in the two groups were given the ALA-PDT in combination with IFN-α2b and routine surgical treatment respectively .The effica-cy after treatment was observed according to surgical wound area , lesion area , recurrence and security during 1 year follow-up.Results The results displayed the complete remission rate of lesion in the PDT group was sig-nificantly higher than that in the surgical group (81.94%vs.57.75%,P<0.05)after treatment,and the total ef-fective rate of BCC was also higher than that in the surgical group ,but no significant difference was identified in the two groups(91.66%vs.81.73%,P>0.05).During 1 year follow-up after treatment,the results showed the rate of recurrence in the PDT group was significantly lower than that in the surgical group (9.72% vs.22. 54%,P<0.05).Moreover,the mean wound area,the lesion area in the PDT group after treatment were also sig-nificantly smaller than that in the surgical group (P<0.05).Conclusion ALA-PDT in combination with IFN is an effective method with lower recurrence and minor trauma in the treatment of superficial basal cell carcino -ma.
4.Research progress on early analgesia after total knee arthroplasty for knee osteoarthritis
Guanjin ZHOU ; Hao PENG ; Sen CHEN
Journal of Clinical Surgery 2016;24(10):804-805
Objective Patients with knee osteoarthritis undergoing total knee arthroplasty may have a different degree of pain during the perioperative period. This will not only bring a lot of adverse effects to the patients,and directly affect the early postoperative functional exercise and rehabilitation of the knee joint. At present,the commonly methods used to relieve the pain after TKA are:patient con-trolled Intravenous analgesia(PCIA)、patient controlled epidural analgesia( PCEA)、continuous femoral nerve block analgesia(CFNB)、joint peripheral injection analgesia and some methods without using medi-cine. In this paper,the analgesia methods used during the perioperative period of TKA and the latest de-velopment are reviewed.
7.Mechanism of impaired angiogenesis after Diabetic limb ischemia
Qingbao GUO ; Xiangyu ZHOU ; Sen SHI ; Yanzheng HE
International Journal of Surgery 2010;37(10):705-709
Diabetic vascular disease is a major complication of diabetes, which is characterized by the formation of collateral vessels of serious damage to systemic disease. Substantial evidence have shown that timpaired endothelial progenitor cell function, non-enzymatic glycation end products accumulate, and Wnt signaling pathway dysfunction may be an important mechanism of impaired angiogenesis after the diabeticlimb ischemic. This paper is to make a study of its mechanism, and to provides a new strategy for diabetes therapeutic angiogenesis.
8.Effects of oral rehydration on tissue perfusion, organ function and survival rate in rats with 40% blood volume loss hemorrhagic shock
Sen HU ; Jingyuan HOU ; Guoyong ZHOU ; Lijian ZHANG ; Zhiyong SHENG
Chinese Journal of Trauma 2010;26(5):460-462
Objective To investigate the effects of oral glucose-electrolyte solution (GES) on resuscitation of hemorrhagic shock induced by 40% blood volume loss in rats. Methods SD rats were randomly divided into three groups; oral GES without hemorrhagic shock (GES group, n = 16) , hemorrhage shock without fluid resuscitation (HS group, n = 20) and hemorrhagic shock resuscitated with oral GES (HS + GES group, n = 20). About 40% of total blood volume was bled from carotid artery of rats to produce a model of hemorrhagic shock. GES with a volume of three times of blood loss was given three times intragastrically at 0.5, 1 and 6 hours after hemorrhage. Mean arterial pressure (MAP) was measured constantly. Blood flow in liver, kidney, stomach and small intestines, and parameters like hemato-crit, plasma osmotic pressure, alanine aminotransferase (ALT) , creatinine (Cr) and diamine oxidase (DAO) were determined 24 hours after hemorrhage. Survival rates of the rats in three groups were calculated 24 hours after hemorrhage. Results MAPs of HS + GES group were 9. 7% and 10. 9% higher than those of HS group 4 and 24 hours after hemorrhage (P < 0. 05). The blood flow of liver, stomach and small intestines in HS + GES group were 18.6% , 88.4% and 22.0% respectively, higher than those in HS group(P <0.05 or P <0.01) 24 hours after hemorrhage. The hematocrit level of HS + GES group was significantly lower than that of HS group, while the levels of ALT, Cr and DAO in HS + GES group were significantly lower than those in HS group (P <0.01). The survival rate of rats in HS + GES group was 80% , which was significantly higher than 30% in HS group (P <0.01). Conclusions Oral rehydration can significantly improve MAP and tissue perfusion, maintain blood volume and plasma osmotic pressure, alleviate organ damage and hence promote the survival rates of rats with hemorrhagic shock.
9.Construction and in vitro functional evaluation on a new hybrid bioartificial liver
Sen GAO ; Yunfeng ZHANG ; Huancheng ZHOU ; Ying GUO ; Yi GAO
Chinese Journal of Hepatobiliary Surgery 2015;21(10):699-702
Objective To design a new type of hybrid bioartificial liver (HBAL), evaluate its efficacy in vitro, and explore the feasibility in clinical application.Methods CL-1 human hepatocytes were cultured on microcarriers for 5 days, when cell count reached about 4.0 × 109 with cell density of about 4.0 × 107/ml.CL-1 cells cultured on microcarriers in home-made bioreactor constitute the biological part of the HBAL.The abiotic part included blood perfusion and bilirubin adsorption, and blood pump was employed as the circulation driver, which were parts of HBAL.The changes of the concentrations of indirect bilirubin (UBD), chenodeoxycholic acid (CDCD), cholic acid (CA), blood ammonia (AA), AST, ALT and LDH were observed under the condition of in vitro circulation.Meanwhile, the function, morphology and the cell activity of CL-1 cells were also observed.Results After in vitro circulation for 24 h, the concentrations of UBD, CDCD, CA and AA significantly decreased from (335.3 ± 6.0) μmol/L, (395.0 ± 5.6) μmol/L, (155.7 ± 4.5) μmol/L, (39.0 ± 2.6) μmol/L at 0 h to (106.0 ± 10.9) μmol/L, (131.8 ± 28.7) μmol/L, (42.2 ± 7.3) μmol/L, (3.5 ± 1.0) μmol/L, respectively.At 48 h, ALT, AST and LDH significantly increased from (25.9 ± 4.2) IU/L, (22.0 ± 3.6) IU/L, (0.28 ± 0.09) μmol/L to (31.0 ± 2.6) IU/L,(31.6 ± 8.0) IU/L, (0.41 ± 0.12) μmol/L, meanwhile the count and vitality of CL-1 cells were significant declined.Conclusions (1) In the new HBAL system, CL-1 cells can keep its viability and function in vitro;and (2) the HBAL appears to be effective in purifying the serum in liver failure simulation model by clearing out non-conjugated bilirubin, chenodeoxycholic acid, cholic acid and ammonium chloride, which seems to be a promising therapeutic option.
10.Optimum dose of dexmedetomidine for endoscopic retrograde cholangiopancreatography in elderly patients when combined with propofol
Sen LIN ; Chengxiang YANG ; Hanbing WANG ; Jun ZHOU
Chinese Journal of Anesthesiology 2014;34(2):186-189
Objective To determine the optimum dose of dexmedetomidine (DEX) for endoscopic retrograde cholangiopancreatography (ERCP) in elderly patients when combined with propofol.Methods Ninetytwo ASA physical status Ⅰ or Ⅱ] elderly patients,aged 65-80 yr,with body mass index 18-25 kg/m2,scheduled for elective ERCP,were randomly assigned into 4 groups (n =23 each) using a random number table:fentanyl group (F group),low-dose DEX group (D1 group),medium-dose DEX group (D2 group) and high-dose DEX group (D3 group).Fentanyl 1.0 μg/kg and DEX 0.4,0.7 and 1.0 μg/kg (in normal saline 20 ml) were infused over 10 min via a pump in F,D1,D2 and D3 groups,respectively.At the end of infusion,propofol targetcontrolled infusion was started with the target plasma concentration set at 4 μg/ml,and after the mirror passed through the throat,the target plasma concentration of propofol was adjusted to 2.5 μg/ml.At 10 min after admission to the operating room,immediately after completion of fentanyl or DEX infusion,immediately after the effect-site concentration of propofol reached 4 μg/ml,immediately after the mirror passed through the throat,while pulling the stone,at end of surgery and when the patients were awake,the depth of sedation (NT value) was reccorded and the development of hypoxemia was also recorded.Arterial blood samples were collected at 10 min after admission to the operating room and at the end of operation to record PaCO2.The consumption of propofol,duration of ERCP,and emergence time were recorded.The body movement and requirement for vasoactive drugs were also recorded.Results Compared with F group, NT value and the incidence of hypoxemia were significantly decreased in D1-3 groups,PaCO2,the incidence of body movement and amount of propofol consumed were decreased in D2 and D3 groups,and the emergence time was prolonged and the requirement for atropine was increased in D3 group (P <0.05).Compared with D1 group,the PaCO2,NT value,incidence of body movement and amount of propofol consumed were decreased in D2 and D3 groups,the emergence time was prolonged and the requirement for atropine was increased in D3 group (P < 0.05).Compared with D2 group,the consumption of propofol was decreased,the emergence time was prolonged,aud the requirement for atropine was increased in D3 group (P < 0.05).Conclusion The optimum dose of dexmedetomidine is 0.7 μg/kg for ERCP in elderly patients when combined with propofol.