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Objective To establish a method to simultaneously determine syringing and isofraxidin by HPLC;To investigate the features of percutaneous absorption in vitro of Jiegugao blended and pasted by white vinegar, honey and vaseline; To discuss the mechanism of commonly used ointment matrices in Tujia Minority. Methods Rat abdomen skin in vitro was as transdermal barrier;the modified Franz diffusion pool was used to simulate human skin medication; the content of syringin and isoprofen was determined by HPLC; the percutaneous absorption equation was established and the related parameters, such as cumulative permeation rate and permeation rate, were calculated. Results When using Syncronis C18 (250 mm × 4.6 mm, 5 μm) as chromatographic column, acetonitrile-0.1%phosphoric acid as mobile phase, 1.0 mL/min as perfusion speed and 265 nm as determine wavelength, regression equation of syringingwas A=10 686.454 6C+1565.778 8 (r=1.000 0), regression equation of isofraxidin was A=12 297.305 4C-5913.729 9 (r=0.999 9). Cumulative permeation quantity of syringing in Jiegugao blended and pasted by white vinegar, honey, vaseline and blank were 7.549 2, 4.580 3, 3.890 8 and 5.378 4 μg?cm-2?h-1 respectively and permeation rate were 25.66%, 16.11%, 13.73% and 18.78%. Meanwhile, cumulative permeation quantity of isofraxidin were 2.536 9, 1.941 8, 1.178 2 and 2.293 6 μg?cm-2?h-1 respectively and permeation rate were 47.04%, 35.06%, 22.11%and 41.11%. Conclusion Using white vinegar as the ointment matrix can promote the percutaneous absorption of effective composition in Jiegugao blended. However, it will retard the percutaneous absorption of effective composition in Jiegugao when using honey and vaseline as the ointment matrices, but honey and vaseline can be used as a slow-release matrix.
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Aim To explore the inhibition of Sinica Maxim′s extract( CSME) on resistant infections of burn wounds,such as the methicillin-resistant staphylococcus aureus ( MRSA ) , resistant pseudomonas aeruginosa (RPA) and resistant escherichia coli(RECO). Meth-ods The resistant strains were cultured by MH agar plates. After resistance genes of quality control strains were extracted and appraised, such as mecA, mexB, merA, qacE△1-sull, tnpU/A and mexB, etc, and then,some projects of CSME were detected,such as the antibacterial spectrum, the minimum inhibitory con-centration(MIC), different concentrations of sensitive rate and inhibition curves, etc. Finally, these results were compared with the inhibitory effects of some anti-biotics to determine the sensitivity rates of CSME. Re-sults The MIC of CSME was 62. 5 ,125 ,250 g · L-1 respectively on the MESA, RPA and RECO. The inhi-bition rates of CSME appeared concentration-dependent on these three kinds of resistant bacteria,and the inhi-bition rates of the multi-concentration CSME on RECO were significantly lower than on MRSA and RPA ( P<0. 05). While in MIC,the resistance rates of MRSA on carbenicillin, cefazolin, erythromycin were significant-ly higher than those of CSME(P<0. 05); The inhibi-tion zones of CSME were significantly smaller than those of ceftriaxone, cefepime, imipenem, but greater than those of other antibiotics( P<0. 05 ); The inhibi-tion zones of CSME on RPA were significantly smaller than those of carbenicillin, and greater than those of other antibiotics ( P <0. 05 ) . The inhibition zones of CSME on RECO were significantly smaller than those of ceftriaxone,cefepime,imipenem,ciprofloxacin,nitro-furazone,and greater than those of other antibiotics ( P<0. 05 ) . Conclusions CSME has a significant inhi-bition on burn wound infection with these three kinds of resistant bacteria,such as MRSA,RPA and RECO. It is prompted that CSME could become one of the effective drugs to control burn wound infections with multi-re-sistant strains.
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AIM Research on effective dialysis medicine through partial isolation loop of small intestine to treat renal failure. METHODS Divide 10 dogs equally into group A and group B for comparative study: make full isolation loop of small intestine; input hypersonic sample solution through vein after blocking the renal arteries to make the man made real failure models such as electrolytic disorder, azotemia and so on. Then at 0 5 hour and 5 hours after that, inject 0 9% NaCl 0 5 ml for group A and 0 025 mg?kg -1 of neostigmine for group B. Finally collect the secretion fluid of the small intestine loop and blood samples every 30 minutes from group A and group B respectively so as to determine the density of K + ,Na +, Cl -,UN, CR,UA in the small intestine fluid and blood samples of the two groups and calculate the clearance rate of each group. RESULTS Respectively at 1 5 hours and 6 5 hours after being injected with neostigmine, group B got two secretion peaks and its clearance rate is remarkably higher than that of group A( P
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Objective: To explore the effects of Houxiangzhengqi Oral Liquid(HOL) on controlling withdrawal syndromes of morphine dependent rats and analgesia of mice. Methods: 60 rats were divided into group A、B、C and D randomly. Group A was injected equivalent 0.9%NaCl(0.2 mL, sc), group B、C and D were injected morphine increasingly(from 20mg?kg -1 to 100mg?kg -1, 5 days, sc) to form patterns of morphine dependent rats. When the 6th day, after group A and B were given 0.9% NaCl(0.5mL?(100g) -1, ig), group C and D were given HOL(100%0.2mL?(100g) -1 and 0.8mL?(100g) -1), respectively, 30 minutes later, by naloxone(4mg?kg -1, ip) withdrawal syndromes. And the withdrawal syndromes was observed and evaluated by the scores and weight lost. Results: The total of scores and their weight loss of group C and D were significantly different from group B(P