OBJECTIVETo study the effect of melatonin on the gastrointestinal motility and plasma levels of the stress hormone in overtraining rats.

METHODThirty adult SD rats were randomly divided into three groups (n = 10): control group, over-training group, melatonin intervention group. 30 min before each training, rats in the control and over-training groups were fed with normal saline (15 mg/kg) once a day and 5 times per week, while rats in the melatonin intervention group were administrated with melatonin, perfusion in the intervention group (15 mg/kg). Excessive training group and melatonin intervention group rats were subjected to excessive training at 5 times a week for 6 weeks. After 6 weeks, the gastric emptying rate, small intestinal propulsion ratio and levels of plasma motilin (MTL) and calcitonin gene-related peptide (CGRP), cortisol (CORT) and catecholamines (CA) were observed in all groups.

RESULTSCompared with the control group, the gastric emptying rate, small intestinal propulsion ratio and levels of plasma MTL, CORT and CA were increased significantly (P < 0.01) while the content of CGRP was reduced (P < 0.01) in over-training group. After treated with melatonin, this trend was reversed, that was, the gastric emptying rate, small intestinal propulsion ratio and levels of plasma MTL, CORT and CA were surpressed significantly (P < 0.01) while the content of CGRP was improved obviously (P < 0.01) in over-training group.

CONCLUSIONMelatonin plays an important role in protecting gastrointestinal tract from dysfunction, in which MTL, CGRP, CORT and CA are all involved.

Animals ; Calcitonin Gene-Related Peptide ; blood ; Catecholamines ; blood ; Fatigue ; Gastrointestinal Motility ; Hydrocortisone ; blood ; Melatonin ; pharmacology ; Motilin ; blood ; Physical Conditioning, Animal ; Rats ; Rats, Sprague-Dawley ; Stress, Physiological

Animals ; Blood Glucose ; Diet, High-Fat ; Ghrelin ; blood ; Lipids ; blood ; Physical Conditioning, Animal ; Rats

Castleman Disease ; complications ; Child ; Female ; Humans ; Paraneoplastic Syndromes ; complications ; Pemphigus ; complications

OBJECTIVE:To analyze the rules and characteristics of adverse drug reactions(ADR)induced by Shuxuetong in-jection,and provide reference for clinical rational drug use. METHODS:ADR cases induced by Shuxuetong injection in Beijing collected by national ADR monitoring center in 2012 were retrieved,and 35 cases of the ADR were statistically analyzed. RE-SULTS:ADR induced by Shuxuetong injection had relatively high incidence in elder over 60 years old(68.57%);ADR might oc-curred after 5 min with off-label use and it mainly occured after 10 min-2 h(40.00%);clinical manifestations were mainly systemic damage and nervous system damage,and all patients were returned to normal after symptomatic treatment except one with unclear outcome. CONCLUSIONS:ADR induced by Shuxuetong injection is related to age and dosage. Clinical medication should be strict-ly in accordance with the instructions,strengthen medication monitoring and reduce incidence of ADR to ensure medication safety.

OBJECTIVETo explore the effect of Peitu Shengjin Recipe (PSR) on nutritional states and immune functions of stable phase chronic obstructive pulmonary disease (COPD) patients.

METHODSTotally 62 stable phase COPD patients were randomly assigned to the treatment group (30 cases) and the control group (32 cases). All patients inhaled Seretide (50/500 µg), twice per day. Besides, patients in the treatment group additionally received PSR, one dose per day. After three months of treatment, the COPD assessment test (CAT) score, the index of nutritional states [including body mass index (BMI) , thickness of skin fold (TSF), mid-arm muscle circumference (MAMC), serum albumin, serum prealbumin], and immune functions (including IgA, IgM, and IgG) were compared between the two groups.

RESULTSBy the end of the treatment, the CAT score decreased more obviously in the treatment group than in the control group (P < 0.05). The improvement of BMI, TSF, MAMC, serum albumin, and serum prealbumin was better in the treatment group than in the control group (P < 0.05). IgM and IgG also increased more in the treatment group (P < 0.05). There was no statistical difference in IgA between the two groups (P > 0.05).

CONCLUSIONSAdditionally use of PSR could improve nutritional states and immune functions of stable phase COPD patients to some extent. Meanwhile, it also could improve their health related quality of life.

Body Mass Index ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Nutritional Status ; Pulmonary Disease, Chronic Obstructive ; drug therapy ; immunology ; Quality of Life ; Serum Albumin

Objective: To sieve the bioactive constituents of Radix Puerariae,serum pharmacochemistry research was performed.Method: Based on the establishment of HPLC fingerprints of Radix Puerariae,the constituents absorbed into blood were determined by comparing the HPLC fingerprints of the methanol extracts,tested serum samples and blank serum sample.Results: Four compounds absorbed into blood were detected,among which two were original constituents of Radix Puerariae(including puerarin),the other might be metabolites of the original constituents.Conclusion: These four constituents absorbed into blood were possible bioactive components of Radix Puerariae.Further studies on them will help clarify the bioactive constituents and mechanisms of Radix Puerariae.

OBJECTIVETo compare the dissolution characteristics of colloidal silica and porous silica as the solid dispersion carrier, with baicalin as the model drug.

METHODThe baicalin solid dispersion was prepared by the solvent method, with colloidal silica and porous silica as the carriers. In the in vitro dissolution experiment, the solid dispersion was identified by scanning electron microscopy, differential scanning and X-ray diffraction.

RESULTThe solid dispersion carriers prepared with both colloidal silica and porous silica could achieve the purpose of rapid release. Along with the increase in the proportion of the carriers, the dissolution rate is accelerated to more than 80% within 60 min. Baicalin existed in the solid dispersion carriers in the non-crystalline form.

CONCLUSIONThe release behaviors of the baicalin solid dispersion prepared with two types of carrier were different. Among the two solid dispersion carriers, porous silica dissolved slowly than colloidal silica within 60 min, and they showed similar dissolutions after 60 min.

Calorimetry, Differential Scanning ; Colloids ; chemistry ; Drug Carriers ; chemistry ; Drug Delivery Systems ; instrumentation ; Flavonoids ; chemistry ; pharmacology ; Porosity ; Silicon Dioxide ; chemistry ; Solubility

Baicalin extremely fine powder was made by using ball-mill and the effect of micronization on the micromeritics properties of baicalin was studied and analyzed. The microstructures of baicalin ordinary and extremely fine powder were compared by scanning electron microscope, differential scanning calorimeter and X-ray diffraction and the powder characteristic of them was investigated. The hygroscopicity was studied. The effect of micronization on the dissolution of baicalin was investigated. The results showed that the chemical constituents of baicalin were not changed after micronization with better compressibility. It was confirmed that micronization technology had a certain application value in promoting the insoluble component of baicalin absorption with higher dissolution.
Calorimetry, Differential Scanning ; Drugs, Chinese Herbal ; chemistry ; Flavonoids ; chemistry ; Particle Size ; Solubility ; Wettability ; X-Ray Diffraction

Objective To determine whether intermittence irradiation of single blue or white light have an adverse effect on the DNA of newborn infants with hyperbilirubinemia by examining the sister chromatid exchange(SCE)frequency of peripheral blood lymphocytes.Methods The frequency of SCE in lymphocytes of 40 icteric infants treated by different phototherapy(PT) methods was a nalyzed by sister chromatid differetance staining technique (SCD).The patients receiving PT were divided into three groups according to two methods of PT,group A:single blue light,20 cases; group B:single white light,20 cases.Results 1.In group A, there was no difference between the levels of SCE before and after therapy within 3 days;but after 4 days, the levels of SCE increased.2.Obvious changes were observed in group B,and the frequency of SCE increased after 1 day and increased significantly in a dose-dependant manner.3.After treatment, the SCE frequency of group B was higher than that of group A.Conclusions PT has mutagenic effect on newborns with hyperbilirubinemia. The effect of single white light on peripheral blood lymphocytes of neonates is more significant.

Objective to investigate the value of diffusion-weighted echo-planar MR imaging in the diagnosis of head and neck lesions.Methods Fifty-seven patients with 85 head and neck lesions were enrolled in the study,including 22 patients with 22 malignant tumors,13 patients with 13 benign tumors, 13 patients with 17 cystic and liquefactive lesions(including 8 patients with 12 cystic lesions,4 patients with 4 tumor necrosis,1 patients with 1 abcess)and 33 lymph nodes.The lesions were all confirmed by operation and clinical follow up.Echo-planar difffusion-weighted imaging (DWI)was performed with different b values (0,500,and 1,000s?mm~(-2)),and the apparent diffusion coefficients (ADCs)were measured.Results Malignant and benign tumors had different characteristics in DWI with different b values.With the increase of b value,the signal intensity of tumor/spinal cord ratio decreased quickly in DWI in benign tumors,while the signal intensity of tumor/spinal cord ratio remained similar in DWI in malignant tumors.The mean ADC value of'malignant tumors[(0.78?0.24)?10~(-3)mm~2? s~(-1)] was significantly lower than that of benign tumors [(1.48?+0.20)?10~(-3)mm~2?s~(-1)] (t = 8.9,P