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Objective:To explore the effect of different extracts of Thlaspi Herba on the gut microbiota of hyperuricemia mice， and to reveal the substance basis and mechanism of its hypouricemic activity. Method:Eighty-eight male Kunming mice were divided into 11 groups， including blank group， model group， allopurinol group， high and low dose groups of petroleum ether extract， high and low dose groups of ethyl acetate extract， high and low dose groups of <italic>n</italic>-butanol extract， high and low dose groups of total flavonoids extract. Mice in the blank group were given 0.5% sodium carboxymethylcellulose by gavage， and the other groups were given oteracil potassium （500 mg·kg<sup>-1</sup>） by gavage to duplicate the hyperuricemia model. After modeling for several hours， the blank group and the model group were given distilled water by gavage， while mice in the allopurinol group were given allopurinol suspension （50 mg·kg<sup>-1</sup>）， and mice in each treatment group were given high and low doses of corresponding extract （5， 2.5 g·kg<sup>-1</sup>）. The serum uric acid （SUA） level and xanthine oxidase （XOD） activity were measured after 14 days. Fresh feces were collected for 16S rDNA sequencing. Result:Compared with the blank group， SUA level and XOD activity of model group were significantly increased （<italic>P</italic><0.05）. Compared with the model group， SUA level and XOD activity of the allopurinol group were significantly decreased （<italic>P</italic><0.01）. After intervention， SUA level were significantly decreased （<italic>P</italic><0.05， <italic>P</italic><0.01）， except for high dose and low dose groups of petroleum ether extract and low dose group of total flavonoids extract， XOD activity was significantly inhibited in low dose group of petroleum ether extract， high dose group of total flavonoids extract， and high and low dose groups of <italic>n</italic>-butanol extract （<italic>P</italic><0.05， <italic>P</italic><0.01）. The high dose group of total flavonoids extract was the most significant. The results of flora sequencing showed that <italic>α</italic> diversity and abundance of the model group changed significantly， and Bacteroidetes， Firmicutes and Lactobacillaceae were significantly correlated with XOD activity. After intervention， the operational taxonomic unit （OTU）， ACE， Chao1 and Shannon indexes of the high and low dose groups of total flavonoids extract were significantly increased （<italic>P</italic><0.05， <italic>P</italic><0.01）. Relative abundance of Bacteroidetes in low dose group of ethyl acetate extract， high dose group of total flavonoids extract， and high and low dose groups of <italic>n</italic>-butanol extract was significantly decreased （<italic>P</italic><0.01）， and the relative abundance of Firmicutes was significantly increased （<italic>P</italic><0.01）. The relative abundance of Lactobacillaceae in low dose group of <italic>n</italic>-butanol extract and high dose group of total flavonoids extract was significantly increased （<italic>P</italic><0.01）. Conclusion:The effective part of Thlaspi Herba for reducing uric acid is mainly flavonoids， the improvement of SUA level and XOD activity by affecting gut microbiota such as Lactobacillaceae， Bacteroidetes and Firmicutes， may be one of its mechanisms.
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Based on the defects in powder properties of the contents of Ziyin Yiwei Capsules, this study screened out the main medicinal slice powders causing the poor powdery properties, and introduced the powder modification process to improve the powdery properties of these slice powders, the pharmaceutical properties of the capsule contents, and the content uniformity of Ziyin Yiwei Capsules, so as to provide a demonstration for the application of powder modification technology to the preparation of Chinese medicinal solid preparations. Through the investigation on the powder properties of the contents of Ziyin Yiwei Capsules, it was clarified that the pulverized particle size of the capsule contents had a good correlation with the pulverization time. According to the measurement results of the powder fluidity and wettability, the quality defects of the capsule contents were caused by the fine powders of Taraxaci Herba and Lungwortlike Herba. "Core-shell" composite particles were prepared from medicinal excipients magnesium stearate and fine powders of Taraxaci Herba and Lungwortlike Herba slices after ultra-fine pulverization to improve the powder properties of the problematic fine powders. Powder characterization data including fluidity and wettability were measured, followed by scanning electron microscopy(SEM) and infrared ray(IR) detection. It was determined that the optimal dosage of magnesium stearate was 2%, and the compositing time was 3 min. The composite particles were then used as content components of the Ziyin Yiwei Capsules. The powder characteristics between the original capsule and the modified composite capsule including the particle size, fluidity, wettability, uniformity of bulk density, and uniformity of chromatism as well as the content uniformity and in vitro dissolution were compared. The results showed that the powder characteristics and content uniformity of the prepared composite capsule were significantly improved, while the material basis of the preparation was not changed before and after modification. The preparation process was proved to be stable and feasible. The powder modification technology solved the pharmaceutical defects that were easy to appear in the preparation of traditional capsules, which has provided experimental evidence for the use of powder modification technology for improving the quality of Chinese medicinal solid preparations and promoting the secondary development and upgrading of traditional Chinese medicinal dosage forms such as capsules.
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Capsules , Excipients , Particle Size , Powders , WettabilityABSTRACT
Objective To establish a measurement method for the content of five compounds (acteoside, harpagide, harpagoside, angoroside-C, and cinnamic acid) in Scrophularia Radix quantitative analysis multi-components by single-marker (QAMS), and verify the accuracy and feasibility of QAMS in the quality control. Methods Taking harpagide as internal standard substance, the relative correlation factor (RCF) of acteoside, cinnamic acid, harpagoside, and angoroside C was established. And the content of each component in Scrophularia Radix was determined by the above-mentioned RCF. In order to prove the scientificity and feasibility of this method, the results were compared with the external standard method. Results The relative correction factors of acteoside, cinnamic acid, harpagoside, and angoroside-C were 0.068 (RSD = 0.53%), 0.060 (RSD = 0.81%), 0.142 (RSD = 1.17%), 0.197 (RSD = 1.82%). No significant differences were found among the quantitative results of four components in 25 batches of Scrophularia Radix determined by the two methods. Conclusion It is feasible and accurate to evaluate the quality of Scrophularia Radix by QAMS.
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Objective: To explore the intestinal absorption characteristics of tanshinone components self emulsifying drug delivery system (SEDDS). Methods: In situ single-pass perfusion method was used to investigate the absorption characteristics of cryptonshinone, tanshinone I, and tanshinone IIA in rats. The absorption parameters (Ka, Papp) of cryptotanshinone, tanshinone I, and tanshinone IIA were used as indicators to study their optimum absorption site among duodenum, jejunum, ileum, and colon. The effects of verapamil hydrochloride (P-glycoprotein inhibitor, P-gp inhibitor), probenecid (multi-drug resistant protein MRP2), and 2, 4-dinitrophenol (energy inhibitor) on the absorption of cryptonshinone, tanshinone I, and tanshinone IIA were also studied, as well as the effects of their different concentration. Results: Cryptonshinone, tanshinone I, and tanshinone IIA could be absorbed at all four intestinal segments, and the optimum absorption site was the upper segment of small intestine. The absorption of cryptotanshinone and tanshinone I were concentration-dependent at experimental concentration levels (1.05-4.19 mg/L and 1.22-5.56 mg/L), while tanshinone IIA was not affected obviously by its concentrations (2.43-11.12 mg/L). Verapamil hydrochloride had no significant influence on the absorption of cryptotanshinone or tanshinone I, while the absorption of tanshinone IIA was improved remarkably. Probenecid increased the absorption of cryptonshinone and tanshinone I apparently, while had no obvious effect on that of tanshinone IIA. 2,4-Dinitrophenol could decrease the absorption of cryptonshinone, tanshinone I, and tanshinone IIA apparently. Conclusion: Cryptonshinone and tanshinone I are supposed to be the substrate of MRP2 instead of P-gp. Tanshinone IIA is supposed to be the substrate of P-gp, instead of MRP2. The energy participated in the absorption of cryptonshinone, tanshinone I, and tanshinone IIA. Active absorption maybe also involved in the absorption of cryptonshinone, tanshinone I, and tanshinone IIA.
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Objective To prepare Sanqi Traumatic Ointment (STO) and study its transdermal permeation properties in vitro. Methods In this paper, the appearance description, high-temperature test, low-temperature test and centrifugal test were taken as indexes. Based on the result of a single factor experiment, the formula for the STO was optimized by Box-Behnken test. Franz diffusing cells method was chosen to investigate the tansdermal infiltration capacity of ointment with different mentha camphor penetration enhancers' in vitro, taking dracorhodin, ginsenoside Rg1, asperosaponi VI, and ginsenoside Rb1 as index components. Results The optimal ratio of the prescription was as follows: lauryl sodium sulfate-stearyl alcohol-vaseline (1.61:26.72:27.10). The promoting effect of different concentration of penetration enhancers on dracorhodin, ginsenoside Rg1, ginsenoside VI, and asperosaponin Rb1 penetration were better; The promoting effect of 3% concentration for index component was better, and this preparation had good stability; The transdermal rates of dracorhodin, ginsenoside Rg1, asperosaponi VI, and ginsenoside Rb1 were 3.971, 6.368, 0.415, and 2.780 μg/(cm2∙h).Conclusion STO had a good release and transdermal properties, and transdermal actions were consistent with zero-order kinetics.
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<p><b>OBJECTIVE</b>To investigate the risk factors for the initial bowel resection and postoperative recurrence in a cohort of patients with Crohn disease(CD).</p><p><b>METHODS</b>A total of 216 consecutive patients who were regularly followed up in the Department of Gastroenterology at the First Affiliated Hospital of Sun Yat-sen University between 2003 and 2009 were included. Probabilities for initial intestinal resection were calculated with Kaplan-Meier method. The influence of concomitant covariates on the cumulative probability rates was examined using Cox proportional hazard model. The risk of postoperative recurrence, including endoscopic recurrence, clinical recurrence and surgical recurrence, was also investigated during the follow-up. Logistic analysis was performed for the risk factors of recurrence.</p><p><b>RESULTS</b>The median follow-up was 55 months. A total of 44 patients(20.4%) underwent bowel resection. The cumulative frequency of surgery was 11%, 25%, and 45% at 1, 5, and 10 years after initial onset. Multivariate analyses showed that age at diagnosis and disease behavior were independent risk factors for initial intestinal resection(P<0.05). All but 4 patients had complete follow-up after the surgery with a median duration of 20.4 months. Endoscopic recurrence rate was 52.6% within 1 year, and clinical recurrence rate was 22.5%. Median time to clinical recurrence was 22.6 months. Multivariate analyses showed that perianal disease was the only independent risk factor for clinical recurrence(P<0.05). During the follow-up 2 patients(5%) underwent further operation and both had the same indications for the reoperation as that for the initial surgery.</p><p><b>CONCLUSIONS</b>Patients with CD have a high frequency of surgery and the postoperative recurrent rate is also high. Age at diagnosis and disease behavior are associated with the probability of initial surgery. The presence of perianal disease is associated with a higher risk of clinical recurrence.</p>
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Adolescent , Adult , Female , Humans , Male , Young Adult , Crohn Disease , General Surgery , Digestive System Surgical Procedures , Methods , Follow-Up Studies , Logistic Models , Postoperative Period , Proportional Hazards Models , Recurrence , Retrospective Studies , Risk FactorsABSTRACT
<p><b>OBJECTIVE</b>To observe the occurrence and progression of liver fibrosis induced by pig serum exposure and bile duct ligation, and analyze the relationship between hepatic inflammation and liver fibrosis.</p><p><b>METHODS</b>Chronically immune-mediated liver fibrosis was induced in rats by weekly injection of pig serum (IPS) into the peritoneal cavity at 3 ml/kg for 12 weeks. Cholestatic fibrosis was induced by common bile duct ligation (BDL). The Knodell score was used to evaluate the histological changes in the liver, and immunohistochemistry was performed using anti-SMA, anti-ED1, anti-CK7, and anti-CD45 antibodies. Quantitative real time PCR (qPCR) analysis was employed to quantify the mRNA expression of the genes related to inflammation, including interleukin-1beta (IL-1beta), IL-6, monocyte chemotactic protein-1, tumor necrosis factor-alpha, regulated upon activation normal T cell expressed and secreted (RANTES), transforming growth factor-beta, platelet-derived growth factor A, as well as the genes associated with fibrogenesis, namely collagen 1, alphaSMA, MMP-9 and TIMP-1.</p><p><b>RESULTS</b>Knodell scores for periportal necrosis, intralobular degeneration and focal necrosis, and portal inflammation were all significantly higher in the BDL group than in the IPS group (P<0.01), whereas the scores for fibrosis was higher in the IPS group (P<0.05). Immunohistochemistry showed obvious inflammation with numerous alphaSMA-positive cells in the liver of the rats in BDL group; the liver of the rats in IPS group showed numerous alphaSMA-positive myofibroblasts with limited inflammatory cell infiltration. qPCR demonstrated a significant up-regulation of the genes related to extracellular matrix remodeling such as collagen 1 (P<0.01), alphaSMA (P<0.01), MMP-9 (P<0.01) and TIMP-1 (P<0.01) in the rat liver in IPS group compared with those in the normal control group, and the mRNA expressions of the inflammation-related cytokines, except for RANTES, were comparable with those in the control. In contrast, the BDL group showed a significant up-regulation of all the pro-inflammatory genes examined with also increased expression of the fibrogenesis-related genes (P<0.05).</p><p><b>CONCLUSION</b>Liver fibrosis induced by IPS is characterized by active ECM remodeling in the absence of obvious inflammation, indicating that chronic development of liver fibrosis can be independent of active hepatic inflammation. BDL-induced liver fibrosis highlights obvious inflammation and fibrous proliferation in the liver.</p>