Aim To investigate the periphery analge-sic effect of myricetin on a rat model of inflammatory pain and the mechanism. Methods Rat models of in-flammatory pain were induced by complete Freund ’ s adjuvant ( CFA) injection in left hindlimb plantar cen-ter. The thermal withdrawal latency ( TWL) was meas-ured before and after CFA or myricetin treatment. Elec-trophysiological method was used to identify the effect of myricetin on the action potential frequency and the voltage dependent potassium channel currents in small DRG neurons. Results Rats with CFA injected showed thermal hyperalgesia ( P <0. 05 ) and TWL in-creased significantly after myricetin intraperitoneally in-jected ( P <0. 05 ) . Current clamp recording showed the action potential frequency of small DRG neurons in rats was inhibited by myricetin ( P<0. 01 ) and voltage calmap recording showed the inhibitory effect of myr-icetin was enhanced by calcium depended potassium channel currents ( P<0. 05 ) . Conclusion Myricetin exerts periphery analgesic effect by enhancing calcium depended potassium channel currents and inhibiting excitability of small neurons of dorsal root ganglion.

BACKGROUND: The source of bone marrow mesenchymal stem cells (BMSCs) is limited, and the cellular morphology,proliferation and multi-directional differentiation capacities can vary during serial passages in BMSCs in vitro.OBJECTIVE: To study the effects of fibroblast growth factor (FGF) on cellular morphology, proliferation and differentiation of serially passaged BMSCs.METHODS: (1) BMSCs were isolated from Sprague-Dawley rats and cultured. These cells were passaged six times in vitro, and the cellular morphology was observed and photographed. (2) BMSCs at passage 6 were seeded into 96-well plates and randomly divided into control group and FGF treatment group. The proliferation of cells in both groups was detected with cell counting kit-8 kit at days 1, 2, 3, 4, 5, 6, 7 after culture. (3) BMSCs at passage 6 were seeded into 6-well plates and randomly divided into control group and FGF treatment group. After 7 days treatment with growth medium or growth medium containing FGF, the cellular morphology was observed and photographed. And then the cells of both groups were treated with osteogenic induction medium, adipogenic induction medium and chondrogenic induction medium for the next 7 days. The osteogenic, adipogenic and chondrogenic related genes (RUNX2, ALP, OCN;PPARγ2, AP2, ADIPOQ; SOX9, collagen II, aggrecan) were detected with real-time PCR. The protein expressions of RUNX2, PPARγ2, SOX9 were detected with western blot assay. (4) BMSCs at passage 6 were seeded into 6-well plates and randomly divided into control group and FGF treatment group. After 7 days treatment with growth medium or growth medium containing FGF, the cells were cultured with osteogenic induction medium, adipogenic induction medium and chondrogenic induction medium for the next 14 days. Then, alizarin red S staining, oil red O staining and alcian blue staining were performed.RESULTS AND CONCLUSION: (1) After in vitro passage for six times, the cellular morphology changed obviously, and FGF treatment recovered the characteristics of primary cells. (2) Compared with the control group, the cell proliferation in the FGF treatment group was significantly increased (P < 0.05). (3) Compared with the control group, the expression of osteogenic, adipogenic and chondrogenic related genes (RUNX2, ALP, OCN; PPARγ2, AP2, ADIPOQ; SOX9, collagen II, aggrecan) was increased significantly in the FGF treatment group (P < 0.05). The protein expressions of RUNX2,PPARγ2, SOX9 were also higher in the FGF treatment group than the control group (P < 0.05). (4) Compared with the control group, the number of extracellular calcium nodules, the number of intracellular lipid droplets, and the expression of acid acidic mucopolysaccharide were significantly increased after FGF pretreatment. To conclude, FGF pretreatment can preserve the stemness of BMSCs serially passaged in vitro.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Diarrhea ; therapy ; Female ; Humans ; Irritable Bowel Syndrome ; therapy ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Moxibustion ; methods

Objective To investigate the relationship between single nucleotide polymorphisms of surfactant protein C(SP-C)gene and respiratory distress syndrome(RDS)in the Han nationality newborns in Inner Mongolia and whether there is a mutation occurs on SP-C gene exon 4 and 5.Methods One hundred newborns with RDS(case group)and 100 newborns without RDS(control group)were selected.PCR gene analysis was used to establish the genotype and allele frequencies of exon 4 (T138N)and 5 (S186N)on SP-C.Results In the Han nationality newborns of Inner Mongolia region,there was no mutation on SP-C gene exon 4 and 5.Exon 4(T138N)on SP-C could be checked out three genotypes:namely AA,AC and CC.The genetic polymorphisms of exon 4 on SP-C were not statistically different between the case group and the control group(χ2 ﹦0.744,P ﹦0.689).Besides,exon 5(S186N)on SP-C could also be checked out three genotypes:namely AA,AG and GG.The genetic polymorphisms of exon 5 on SP-C were also not statistically different between the case group and the control group(χ2 ﹦0.770,P ﹦0.681 ).Conclusion There is no mutation on SP-C gene exon 4 and 5.The genetic polymorphism of exon 4 and 5 on SP-C displays no signifi-cant correlation with RDS of the Han nationality newborns in Inner Mongolia.

Objective To investigate the characteristics of mental rotation in stroke patients and the relationship between mental rotation and visual-spatial cognitive function. Methods From March, 2012 to October, 2013, 30 stroke patients were selected as experimental group and 30 healthy subjects as control group. They were tested with hand mental rotation task, and assessed with visuospatial abilities from Mon-treal Cognitive Assessment (MoCA). Results The reaction time of hand mental rotation task was significantly longer in the experimental group than in the control group (F=95.6, P<0.001). The reaction time was longer with the increase of rotation angle in both groups, and was the longest as 180° of rotation (F=345.672, P<0.001). The response accuracy rate of hand mental rotation task was significantly lower in the experimental group than in the control group (F=6.444, P<0.05). The response accuracy rate was lower with the increase of rotation angle in both groups, and was the least as 180° of rotation (F=102.911, P<0.001). The reaction time negatively correlated with the score of visuospa-tial abilities, while the response accuracy rate positively correlated with it in the stroke patients (P<0.05). Conclusion The mental rotation ability is impaired in stroke patients, however, the respondent pattern is similar to healthy people. The mental rotation ability is correlated with visual-spatial cognitive functions in stroke patients.

Objective:To investigate the mechanism of liver and lung injury in mouse septic models.Methods:Twenty-four male Kunming mice were subjected to cecal ligation and puncture(CLP)or sham operation.The permeability of microvasculature,water contents,activities of myeloperoxidase(MPO)and the apoptosis of microvascular endothelial cells in lung microvasculature and liver sinus were examined 3 h and 12 h after operation.Results:Both the liver and lung showed a significant increase in microvessel permeability at 12 h in CLP group compared with sham operation group.MPO activity and water content in CLP group were obviously higher than those in the sham operation group.The apoptosis of lung microvascular endothelial cells at 12 h in CLP group(5.03?0.92)% was significantly higher than that of control group(3.48?1.21)%(P

This study was performed to investigate the chemical constituents in the twigs and leaves of Harrisonia perforate. Six compounds were isolated from the 95% EtOH extract of the twigs and leaves of Harrisonia perforate by silica gel, ODS, Sephadex LH-20 column chromatographies and preparative HPLC. On the basis of chemical properties and spectra data, these compounds were identified as harriperfin E (1), kihadanin A (2), kihadanin B (3), 6α-acetoxyobacunol acetate (4), gardaubryone C (5), and β-sitosterol methyl ether (6), respectively. Compound 1 is a new chromone, and compounds 2-6 are isolated from this plant for the first time.
Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; Phytochemicals ; chemistry ; isolation & purification ; Plant Leaves ; chemistry ; Simaroubaceae ; chemistry

A method for the simultaneous determination of 34 pesticides in sunflower oil, soybean oil and corn oil was developed. The samples were extracted and purified by a modified QuEChERS method, and then the supernatant was analyzed by on-line gel permeation chromatography-gas chromatography-mass spectrometry ( GPC-GC-MS ) . The linear range was from 0 . 01 to 0 . 2 mg/L with a good correlation coefficients ( r≥0. 9913). The average recoveries of 31 pesticides (except p,p′-DDE, p,p′-DDD, p,p′-DDT. For detail, please reference to section 3 . 6 ) ranged from 70 . 3% to 115 . 4%, 69 . 5% to 112 . 6% and 70 . 2% to 116 . 1%spiked at 0. 05 μg/g and 0. 1 μg/g with the relative standard deviations (RSDs, n=6) less than 13. 3%, 13. 5% and 12. 1% in sunflower oil, soybean oil and corn oil samples, respectively. The LODs of this method ranged from 0. 0692 to 2. 28, 0. 0559 to 2. 01 and 0. 0584 to 2. 14μg/kg (S/N=3) in sunflower oil, soybean oil and corn oil samples respectively. The convenient operation and versatility of this method are suitable for the fast screening and detection of 34 pesticide residues in sunflower oil, soybean oil and corn oil.

Objective To study the correlation between the surfactant protein C ( SP-C) gene mutation in exon 5 area and respiratory distress syndrome(RDS) in premature infants. Methods From January 2013 to January 2015, nonconsanguineous premature infants [28 weeks ≤gestational age(GA)< 37 weeks] of Han ethnicity with RDS admitted to our hospital were selected as the RDS group, and nonconsanguineous Han premature infants without RDS as the control group. SP-C gene exon 5 mutation were detected using the gene sequencing method. Results SP-C gene exon 5 region c. 715G > A heterozygous mutations were detected in 17 cases among 60 patients in the RDS group. The mutation frequency was 28. 3% . SP-C gene exon 5 region c. 715G > A heterozygous mutations were detected in 8 cases among 60 patients in the control group. The mutation frequency was 13. 3% . The mutation frequency in the RDS group was statistically significantly higher than the control group (χ2 = 4. 093,P =0. 043) . In RDS group, c. 715G > A heterozygous mutation had no significant correlation with RDS grades, oxygen therapy, pulmonary surfactant dose nor treatment outcome (P > 0. 05). Conclusions A correlation may be existed between SP-C gene exon 5 area c. 715G > A heterozygous mutation and RDS in premature infants.

Objective To explore the relationship between blood lipids level with creatinine clearance rate(Ccr)in patients with heart failure(HF). Methods A total of 955 patients who were diagnosed with heart failure(cardiac function NYHAⅡ~Ⅳclassification)upon discharge from the Department of Cardiology of the Second Hospital of Tianjin Medical University, between January 2010 to June 2013 were enrolled as HF group. Healthy adults (n=200) with normal cardiac function which approximately matched basic condition with HF group were selected as control group. The HF group was fur?ther divided intoⅡ,Ⅲ,Ⅳclassification according to their cardiac function(NYHA classification). HF group was also divid?ed into normal renal function group, mild renal injury group and moderate-severe renal injury group based on their Ccr. Ef?fect of gender and lipid parameters were also compared. Binary logistic regression was used to analyze factors influencing renal function in patients with HF. Results Compared with people in the control group, the levels of triacylglycerol(TG), total cholesterol(TC), low density lipoprotein cholesterol(LDL-c)and non high density lipoprotein cholesterol(non-HDL-c)in patients of HF group were increased while Ccr and high density lipoprotein cholesterol(HDL-c)were decreased. Ccr and lipids were obviously decreased in patients with HF of Ⅳclassification. TG and HDL-c were decreased in moderate-severe renal injury group. Females had a higher lipid levels than males in HF group(P<0.05 or P<0.01). Advanced age, coronary heart disease and hypertension were all risk factors for renal impairment in patients with HF by binary logistic re?gression. On the other hand, weight gain and HDL-c were the protection factors for renal function in HF patients. Conclu?sion Dyslipidemias may lead to renal insufficiency in patients with HF. It was important to control lipids and improve re?nal function in patients with HF.