AIM To study the effect of ATP sensitive potassium channel(K ATP ) opener pinacidil on the current induced by nicotine in cultured rat superior cervical ganglia. METHOD Whole cell patch clamp technique. RESULTS Pinacidil inhibited nicotine induced current when in higher dose(100 ?mol?L -1 ), but had no effect on the desensitization of nicotinic receptors. K ATP antagonist glibenclamide didn't influence the inhibitory effect of pinacidil on nicotinic current. CONCLUSION Pinacidil had an inhibitory effect on nicotine induced current in rat superior cervical ganglia and this effect wasn't mediated by K ATP .

Nicotinic and muscarinic acetylcholine receptors have the same endogenous ligand ACh and are distributed together in many tissues, so it is reasonable to believe that there must be some interactions existed between them. The functions of muscarinic receptors in the tissues innervated by the parasympathetic cholinergic postfibers, can be modulated by the ganglionic nicotinic receptors through stimulating ACh release. In ganglia, the postsynaptic nicotinic receptor activities can be modulated by the presynaptic muscarinic and nicotinic autoreceptors through regulating ACh release. Moreover, The functions of muscarinic receptors can be changed by nicotinic receptor desensitization or blockade. The two types of receptor act on each other and keep in a varied homeostasis of cholinergic nervous system.

Objective To explore the relationships among pulmonary function,DVH and acute radiation pneumonitis after three-dimensional conformal radiation treatment in patients with non-small-cell lung cancer.MethodsPulmonary function tests were conducted on 68 inoperable patients (male 42,female 26,median age 52,KPS≥80) before and after three months radiotherapy respectively.After 3 months of follow-up,radiation pneumonitis were graded,and V20,V30 and MLD were derived from dose volume histogram (DVH).ResultsAll patients were treated with radiotherapy at the irradiation dose of 60～70Gy.Acute radiation pneumonitis occurred in 24 patients with 11 Grade Ⅰ,7 Grade Ⅱ,3 Grade Ⅲ,3 Grade Ⅳ.There were no significant difference between the pre-irradiation and the three months after irradiation for FVC (P＞0.05).But there were significant different between pre-irradiation and three months after irradiation for FEV1.0 and DLCO (P＜0.05).V20,V30 and MLD were observed in patients treated with high radiation pneumonitis.ConclusionsThere were close relationships among pulmonary function,DVH and radiation pneumonitis in patients with non-small cell lung cancer.

Acupuncture Points ; Adult ; Aged ; Combined Modality Therapy ; Electroacupuncture ; Exercise Therapy ; Female ; Headache ; physiopathology ; therapy ; Humans ; Male ; Middle Aged ; Neck Pain ; physiopathology ; therapy ; Range of Motion, Articular ; Treatment Outcome

Objective:To evaluate the current situation and trend of anti-infection drug usage in 11 hospitals of Shanghai during 2003-2005.Methods:Using the cost ranking approach,we analyzed the anti-infection drug usage in 11 major hospitals of Shanghai during 2003-2005.The drug species,consumption,cost,manufacturer,etc,were analyzed by Excel 2000 software. Results:It was found that the cost of anti-infection drugs in the 11 hospitals occupied 22.65% of the total drug expenditure during 2003-2005 and the expenditure decreased at an annual rate of 4.02%.We also found that 80% of the anti-infection drugs were antibiotics.The consumption of?-lactamase inhibitor valued 44.120 5,73.696 7 and 95.163 0 million Yuan in 2003,2004 and 2005,respectively(with a yearly growth of 46.86%),ranking the 3rd in 2003 and the 2nd in both 2004 and 2005.The consumption of cephalosporins ranked the first during 2003-2005.The top 20 anti-infection drugs occupied nearly 80% of the total consumption;the consumption of sulbactam sodium/cefoperazone raised from the 17th in 2003 to the 5th in 2004 and to the first in 2005.Conclusion:The consumption of anti-infection drugs has been restrained;cephalosporins are still the major drugs in clinical practice;and the consumption of sulbactam sodium/cefoperazone is on the rise year by year.

OBJECTIVETo investigate the role and significance of ATP-sensitive K+ channels in the pathological process of hypoxia hypercapnia-induced pulmonary vasoconstriction (HHPV) and the relationship with ERK1/2 signal pathway in rats.

METHODSWe made the third pulmonary artery rings of SD rats, used the model of pulmonary artery rings perfusion in vitro. Under acute hypoxia hypercapnia condition, and observed the effects of the three stages of HHPV incubated by glybenclamide(Gly) and the combined application of Gly and U0126. At the same time, the values of rings' tension changes were recorded via the method of hypoxia hypercapnia conditions reactivity.

RESULTSUnder the normoxia condition, the values of the third pulmonary artery rings tension were relatively stable, but under the hypoxia hypercapnia condition, we observed a biphasic pulmonary artery contractile response compared with N group (P < 0.05, P < 0.01). When the third pulmonary artery rings incubated by Gly, it's phase II persistent vasoconstriction was enhanced compared with the H group (P < 0.05, P < 0.01), and the phase I vasoconstriction was also heightened. Moreover, under the hypoxia hypercapnia condition, U0126 could significantly relieve the phase II persistent vasoconstriction compared with HD group (P < 0.05, P < 0.01) induced by Gly, but the phase I acute vasoconstriction and the phase I vasodilation had no changes (P > 0.05).

CONCLUSIONGly may mediate HHPV via activating ERK1/2 signal transduction pathway.

Animals ; Glyburide ; pharmacology ; Hypercapnia ; metabolism ; physiopathology ; Hypoxia ; metabolism ; physiopathology ; In Vitro Techniques ; MAP Kinase Signaling System ; physiology ; Male ; Pulmonary Artery ; drug effects ; metabolism ; physiology ; Rats ; Rats, Sprague-Dawley ; Vasoconstriction ; drug effects

To explore the prevention effect of the joint combination of Yindanxinnaotong soft capsule (YDXNT) and exercise (swimming) on atherosclerotic rats. The method of 3 x 3 factorial design, including two factors (YDXNT and swimming) and three levels (0, 1, 2 g x kg(-1) YDXNT; 0, 0.5, 1 h swimming), was mainly adopted. The atherosclerotic rat model was established by ligating their left common carotid arteries and feeding high-fat diet. After 8 weeks, blood samples were collected from their thoracic aorta to determine blood viscosity, plasma viscosity, fibrinogen (FIB), nitric oxide (NO), 6-keto-PGF(1alpha) endothelin (ET) and thromboxane B2 (TXB2). The tissues of left common carotid arteries of the rats were collected to detect the positive expression of SM22alpha and determine the semi-quantitation through the immunohistochemical staining. The result showed that the combination of YDXNT and swimming can significantly decrease the plasma viscosity (F = 3.241, P = 0.017), the high and low shear blood viscosity (F = 6.444, P = 0.001; F = 3.002, P = 0.024) and FIB (F = 4.046, P = 0.005). The increased NO and 6-keto-PGF(1alpha) and the decreased ET and TXB2 indicated a significant interaction (P < 0.05). The swimming showed an obvious main effect in the expression of up-regulated protein SM22alpha (F = 8.088, P = 0.001). The study suggested that the combined administration of YDXNT and swimming could improve the hemorheological parameters of atherosclerotic rats, protect the vascular endothelium, inhibit the vascular remodeling in atherosclerosis and positively prevent the atherosclerosis.
Animals ; Atherosclerosis ; drug therapy ; genetics ; metabolism ; prevention & control ; Blood Viscosity ; drug effects ; Combined Modality Therapy ; Drugs, Chinese Herbal ; administration & dosage ; Exercise Therapy ; Humans ; Male ; Microfilament Proteins ; genetics ; metabolism ; Muscle Proteins ; genetics ; metabolism ; Rats ; Rats, Sprague-Dawley ; Swimming

OBJECTIVETo elucidate whether the polymorphism of asthma immune regulator gene TIM-4 is associated with the risk of childhood allergic asthma in the southwest region of China.

METHODSTIM-4 gene promoter region RS6882076 and intron RS4704727 were studied. PCR-RFLP was used to test the genotypes of two polymorphism loci among 579 cases (average 7.2 years old) of asthma and 524 controls (average 7.6 years old) in a case-control study.

RESULTSThere were significant differences in the frequency of gene types at RS4704727 site between the asthma and the control groups (P<0.01). The results of PCR-RFLP showed that the polyporphisms of RS6882076 and RS4704727 in TIM-4 gene were present in this study population. The frequency of T allele at the RS4704727 site in the asthma group was significantly lower than that in the control group (OR=1.603; 95%CI 1.304-1.971; P<0.01). There were no significant differences in the frequencies of gene types and allele at RS6882076 site between the two groups (P>0.05).

CONCLUSIONSRS4704727 polymorphism of TIM-4 gene may be associated with childhood asthma, providing a better understanding of the pathogenesis of childhood asthma in the Southwest region of China.

Asthma ; etiology ; genetics ; Child ; Female ; Humans ; Male ; Membrane Proteins ; genetics ; Polymorphism, Single Nucleotide ; Promoter Regions, Genetic

OBJECTIVE: To explore the operative strategy and clinical outcome of the thoracolumbar fracture dislocation. METHODS: Forty-two patients with the thoracolumbar fracture dislocation were treated with anterior approach (10 patients), posterior approach (28 patients), and anterior combined with posterior approach (4 patients) in order to construct the stabilities of the spine. The ASIA grades were used to evaluate the recovery of the neurological function, and the improvement of the kyphosis deformities was evaluated by the cobb's angle post-operation. RESULTS: All the patients had no complications of injury in the vascular and neurological system. The ASIA grades after the operation were superior to those of pre-operation, and the cobb's angle was rectified distinctly. CONCLUSION When appropriate operative strategies are adopted, thoracolumbar fracture dislocation can be treated with satisfactory outcome.
Adolescent ; Adult ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Joint Dislocations ; etiology ; surgery ; Lumbar Vertebrae ; injuries ; surgery ; Male ; Middle Aged ; Spinal Fractures ; complications ; surgery ; Thoracic Vertebrae ; injuries ; surgery ; Treatment Outcome

OBJECTIVETo investigate the effect of siRNA silencing the role of C-Jun N-terminal Kinase (JNK) gene in excessive endoplasmic reticulum stress on lung ischemia/reperfusion injury.

METHODSMouse model of pulmonary ischemia reperfusion injury (PIRI) in situ was established with unilateral lung in vivo. Seventy experimental mice were randomly allocated into seven groups (n = 10): Sham group (Sham group), ischemia reperfusion group (I/R), PBS+ Lipofectamine2000TM transfection reagent group (I/R + PBS+ Lipo group), negative control group (I/R+ SCR group), JNK-siRNA group (I/R + siRNA(JNK1), siRNA(JNK2), siRNA(JNK3)). Mice were euthanized after experimental time out, and left lung tissue was extracted. Wet/dry lung weight ratio (W/D) and total lung water content (TLW) were tested. Light microscope, alveolar damage quantitative evaluation index (IQA) and electron microscope were observed. The expression levels of JNK and glucose regulatex protein(GRP78) were detected by RT-PCR and Western blot. Apoptosis of lung tissue was determined by TUNEL.

RESULTSCompared with Sham group, all indicators above of I/R + PBS + Lipo group and I/R + SCR group were significantly increased (P < 0.01), and compared with I/R group, those indicators of the three groups all had no notable difference; those indicators were not statistically different between I/R + PBS + Lipo group and I/R + SCR group, and compared to the three groups, the above indicators in JNK-siRNA group were lower (P < 0.05, P < 0.01) except that the expression levels of GRP78 was not statistically different.

CONCLUSIONI/R induces excessive ERS in lung tissue, in which JNK pathway participates in apoptosis, leading to lung tissue injury.

Animals ; Apoptosis ; Endoplasmic Reticulum Stress ; Heat-Shock Proteins ; metabolism ; JNK Mitogen-Activated Protein Kinases ; genetics ; Lung ; physiopathology ; Lung Injury ; genetics ; MAP Kinase Signaling System ; Mice ; RNA, Small Interfering ; Reperfusion Injury ; genetics