Objective To study the pathology and possible mechanism of experimental hydrochloric acid（HCl） inhalation-indued pulmonary fibrosis in rats.Methods 120 male SD rats were randomly divided into a nomal control group，a bleomycin group，a high dose HCl group，a middle dose HCl group and a low dose HCl group.The bleomycin group was intratracheally injected with bleomycin once to induce pulmonary fibrosis.The three HCl groups were intratracheally injected with HCl once per week.The control group was given saline by the same way.Six rats of each group were randomly sacrificed on day 7，14，28 and 42 respectively.The histological changes of lung tissue were studied by HE and Masson’s trichrome staining.Hydroxyproline level in lung tissue was measured by digestion method.Protein and mRNA expression of transforming growth factor-β1（TGF-β1） were assayed by immunohistochemistry and RT-PCR respectively.Results Alveolitis in three HCl groups was significantl compared to control group，most severe at the second week，then remained at a high level which was equivalent to or exceeded the level of the bleomysin group after 28 days.Pulmonary fibrosis in three HCl groups was also significantly more severe than that in the control group，but milder than that in the bleomysin group.The high-dose and middle-dose HCl groups were not significantly different from the bleomysin group on day 42.There was no difference between three HCl groups in the earlier period，but the high-dose HCl group has a significantly difference from low-dose group on day 42.The content of hydroxyproline in high-dose and middle-dose HCl groups was also significantly higher than that in the control group.On day 42 hydroxyproline content in high-dose HCl dose rather middle –or low dose group was similiar with the level of bleomysin group.Content of TGF-β1 mRNA in three HCl groups was comparable to the level of bleomysin group on day 28 and exceeded on day 42.The expression of TGF-β1 in three HCl groups was not significantly different from the bleomysin group on day 42.Conclusion Experimental acid aspiration might contribute to pulmonary fibrosis in rats.Acid induced alveolar epithelial cell damage，abnormal proliferation and repair and fibrosis could be involved..
目的:研究双醋瑞因联合盐酸氨基葡萄糖和双氯芬酸钠治疗骨性关节炎的可行性及安全性。方法:选取100例骨性关节炎患者,随机分入双醋瑞因组联合双氯芬酸钠组(A组)、盐酸氨基葡萄糖联合双氯芬酸钠组(B组)、单用双氯芬酸钠组(C组)和双醋瑞因组联合双氯芬酸钠和盐酸氨基葡萄糖组(D组)四组中,用药12周后观察治疗前后临床疗效和综合疗效评分。结果:1.四组治疗方案在VAS评分、关节疼痛度评分方面均有良好改善率;2D组治疗方案优于A、B、C三组。结论:双醋瑞因联合盐酸氨基葡萄糖和双氯芬酸钠治疗骨性关节炎是可行、安全、优效的方案。
ObjectiveTo develop an experimental model of gastroesophageal reflux-induced esophageal stricture in rats and explore the mechanism of esophageal stricture. MethodsA total of 30 male Sprague-Dawley (SD) rats by random number table method were randomly divided into three groups as follows: an operation+acid perfusion group, first the models of lower esophageal sphincter relaxation and hiatal hernia were made, and then the rats’ esophagus were perfused with hydrochloric acid-pepsin; acid perfusion group, the rats’ esophagus were directly perfused with hydrochloric acid-pepsin; and control group, rats’ esophagus were perfused with normal saline. After 4 weeks of continuous perfusion, the esophageal mucosal injury of SD rats in each group were observed, and the concentrations of inflammatory cytokines [tumor necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-18] in esophageal tissues were detected by enzyme-linked immunosorbent assay. ResultsIn the operation+acid perfusion group, esophageal stricture was formed in 2 SD rats, but no esophageal stenosis was found in the acid perfusion group and the control group. The body weight of rats in the operation+acid perfusion group and the acid perfusion group were lower than that in the control group (P<0.05). The esophageal mucosal injury scores of rats in the operation+acid perfusion group and the acid perfusion group were higher than that in the control group (P<0.001), and the operation+acid perfusion group was higher than that in the acid perfusion group (P=0.014). The concentrations of TNF-α, IL-1β and IL-18 in esophageal tissues were higher in the operation+acid perfusion group and the acid perfusion group than that in the control group (P<0.001), and the operation+acid perfusion group was higher than that in the acid perfusion group (P<0.001). ConclusionsThe anti-reflux barrier is an important part of preventing gastroesophageal reflux disease. The destruction of anti-reflux barrier, hydrochloric acid-pepsin perfusion and inflammatory cytokines jointly induced esophageal inflammation and injury, and even caused esophageal stricture.
目的:比较复方利多卡因和盐酸利多卡因的麻醉效果。方法:将 200 例口腔局麻的患者随机分为试验组和对照组,试验组应用复方利多卡因,对照组应用盐酸利多卡因。结果: 复方利多卡因的麻醉效果及时间明显优于盐酸利多卡因,两者结果在统计学上有显著性差异(Plt;0 01)。结论: 复方利多卡因具有显效时间快、作用时间长、止痛效果好的特点,特别是口腔科术后长效镇痛效果明显,值得推广应用。
Objective To prepare cationic Vancomycin hydrochloride multivesicular liposome (MVL) and to inspect its quality. Methods Cationic Vancomycin hydrochloride MVLs were prepared by double emulsion method, and the storing solution of Vancomycin was prepared. The analysis method of Vancomycin in vitro was established; the specificity, precision, and resorption rate were estimated. Reverse phase high performance liquid chromatography (RP-HPLC) was used to determine the concentration of Vancomycin, encapsulation efficiency, and release characteristics in vitro. The formulation and pharmaceutical process were optimized by single factor experiments and orthogonal experimental design with the factor of encapsulation efficiency as the criteria. The liposome morphology was observed by optical microscopy and transmission electron microscopy. The particle size and Zeta potential were determined by Malvern instrument. The stability was analyzed by dynamic analysis. Results An RP-HPLC method was established for the assay of Vancomycin. The analysis method was precise, simple, and reliable for the quality control of Vancomycin. Vancomycin hydrochloride MVLs were round and well-distributed. The average particle size and the encapsulation efficiency were 3.3 μm and 24.9%, respectively. Zeta potential was 24.53 mV, and 90.5% of Vancomycin hydrochloride was released after 264 hours in normal saline under 37℃. Cationic Vancomycin MVLs were stored for 1 month at 4 ℃, which mantained good stability. Conclusion Cationic Vancomycin hydrochloride MVLs have good appearance, high encapsulation efficiency, good stability, and significant sustained release properties.
ObjectiveTo compare the clinical efficacy of glucosamine hydrochloride and diacerein for patients with knee osteoarthritis and the MRI variation. MethodsBetween January and June 2014, 90 patients with knee osteoarthritis were randomized into three groups: group A (treated by glucosamine hydrochloride), group B (treated by diacerein) and group C (treated by both glucosamine hydrochloride and diacerein). The score of Western Ontario and McMaster Universities (WOMAC) index of osteoarthritis, MRI cartilage injury Recht grading and the curative effects for bone marrow edema, joint cavity effusion and meniscus injury were compared before and after the treatment. ResultsThe scores of WOMAC after treatment in all the groups were improved, while the therapeutic effect of group C lasted longer when medical treatment suspended. The number of articular surface with different degrees of cartilage injury showed no statistically significant change in all three groups (P ＞ 0.05) . The state of bone marrow edema and joint cavity effusion were improved with a statistically significant difference in all groups (P ＜ 0.05) . Patients with lateral meniscus degeneration in group A and patients with medial meniscal tear in group B both increased with statistically significant differences (P ＜ 0.05) . However, in group C, patients with lateral meniscus degeneration or meniscal tear decreased with statistically significant differences (P ＜ 0.05) . ConclusionsThe treatment for osteoarthritis by glucosamine hydrochloride is effective, and the curative effect lasts longer when treated by both glucosamine hydrochloride and diacerein. Glucosamine hydrochloride ameliorates the bone marrow edema and joint cavity effusion. Treatment together with diacerein leads to a better therapeutic effect for patients with meniscus degeneration, yet further studies are needed to prove its effects in ameliorating cartilage injury.
ObjectiveTo assess the therapeutic effect of arthroscopic microfracture surgery combined with oral glucosamine hydrochloride on osteochondritis dissecans of the knee. MethodsBetween January 2014 and June 2015, 24 patients with osteochondritis dissecans of the knee ready to undergo arthroscopic microfracture surgery were divided into experimental group (odd surgery sequence numbers) treated with arthroscopic microfracture surgery combined with oral glucosamine hydrochloride (480 mg/time, 3 times per day, from the first day to 3 months after the surgery) and control group (even surgery sequence numbers) treated with arthroscopic microfracture surgery. All the patients were discharged from the hospital after one week of rehabilitation exercises with rehabilitation equipment of lower extremity. Follow-up lasted for at least 6 months. The therapeutic effects of the two methods were assessed according to Tegner scores for motor function of knee joint and United States New York specialty surgical hospital (HSS) scores. ResultsThe symptoms of knee joint was alleviated significantly after the operation. The function of knee joint was improved significantly after 6 weeks. Tegner and HSS scores before surgery were not significantly different between the two groups (P>0.05). The Tegner scores were not significantly different between the two groups 6 weeks after surgery (P>0.05). The difference of Tegner scores were statistically significant between the two groups 12 and 24 weeks after surgery (P<0.05), and HSS scores of the experimental group improved better than the control group 6, 12 and 24 weeks after surgery, and the differences were statistically significant (P<0.05). ConclusionThe short-term effect of arthroscopic microfracture surgery combined with oral glucosamine hydrochloride is better than that of arthroscopic microfracture surgery in the treatment of osteochondritis dissecans of the knee.
ObjectiveTo observe the therapeutic effect of electro-acupuncture combined with oral glucosamine hydrochloride capsules in the treatment of knee osteoarthritis, and compare it with the curative effect of the two methods separately. MethodsA total of 168 patients with knee osteoarthritis treated from March 2006 to December 2012 were randomly divided into 3 groups. Electro-acupuncture combined with oral glucosamine hydrochloride capsules were given to the 58 patients in the treatment group, single acupuncture treatment was given to the 57 patients in control group A, and simple oral glucosamine hydrochloride capsules were given to the 53 patients in control group B. The treatment lasted for 6 weeks. Assessment of knee osteoarthritis by Lequesne international standard index number and the total efficiency was carried out before treatment and 3 weeks, 6 weeks and 6 months after treatment, respectively. ResultsThe total effective rate of the treatment group was 91.38%, of control group A was 68.42%, and of control group B was 79.25%. There was a significant difference between the treatment group and control group A, and between the treatment group and control group B (P<0.05). No blood, liver or kidney damage or gastrointestinal adverse reaction occurred among patients in all the three groups. ConclusionThe efficacy of electro-acupuncture plus oral glucosamine hydrochloride capsules is better than simple acupuncture and simple oral glucosamine hydrochloride capsules treatment.
ObjectiveTo discuss the effect of glucosamine-hydrochloride (Glu/Ch) in protecting and repairing the cartilage in blood-induced joint damage (BJD) in vivo. MethodsThirty-two adult New Zealand rabbits were randomly divided into 4 groups (n=8):high-dose Glu/Ch treated group (group A), low-dose Glu/Ch treated group (group B), positive control group (group C), and negative control group (group D). A joint bleeding model was established by blood injection into articular cavity in groups A, B, and C. Glu/Ch was given by gavage in groups A (250 mg/kg) and B (21.5 mg/kg) once a day for 8 weeks, and the same dosage of saline was given in groups C and D. The serum cartilage oligomeric matrix protein (COMP), serum chondroitin sulfate 846(CS846), and urinary C-terminal telopepide of type II collagen (CTX-II) were measured at 3 days, 7 days, 2 weeks, and 8 weeks after modeling. The expressions of cytokines such as interleukin 1β (IL-1β) and tumor necrosis factor α (TNF-α) in synovial fluid were analyzed by ELISA at 8 weeks after modeling. The expression of matrix metalloproteinase 13(MMP-13) was detected by immunohistochemistry. Alcian blue staining and Safranin-O staining were performed to calculate the percentage of the positive staining areas. The proteoglycan content was detected by semi-quantitative analysis in the articular cartilage. ResultsThe COMP concentration was significantly higher in groups A, B, and C than group D, and in groups B and C than group A at 3 days after modeling (P<0.05); no significant difference was found among groups A, B, and D at 7 days (P>0.05), and it was significantly lower in groups A, B, and D than group C (P<0.05); there was no significant difference among 4 groups after 2 and 8 weeks (P>0.05). Difference in CS846 concentration had no significance among 4 groups at each time point (P>0.05). The CTX-II concentration of groups A, B, and C was significantly higher than that of group D at each time point (P<0.05); it was significantly lower in group A than groups B and C at 7 days, 2 weeks, and 8 weeks (P<0.05). The TNF-α concentration of groups A and B was significantly higher than group D, and was significantly lower than group C at 8 weeks (P<0.05), but no significant difference was observed between groups A and B (P>0.05). The IL-1β concentration was significantly higher in group C than the other groups (P<0.05), and in group B than groups A and D (P<0.05), but there was no significant difference between groups A and D (P>0.05). The MMP-13 expression was significantly higher in group C than groups A, B, and D (P<0.05), in groups A and B than group D (P<0.05). A significant decrease in the area stained with Alcian blue and Safranin-O was observed in group C. There were significant differences in the percentage of the positive stained areas of Alcian blue and Safranin-O among 4 groups (P<0.05). The relative quantities of proteoglycan from small to large in order was groups C, B, A, and D, respectively, showing significant differences (P<0.05). ConclusionThe metabolism disorder of cartilage matrix and synovium inflammatory reaction can be observed in rat joint bleeding model. Glu/Ch has certain protective effect on the cartilage after BJD by down-regulating IL-1β, TNF-α, and MMP-13, as well as increasing proteoglycan content in the cartilage.
ObjectiveTo explore the efficacy of calcitonin combined with glucosamine hydrochloride on knee osteoarthritis. MethodsAccording to Kellgren-Lawrence radiographic scoring system, 156 patients with knee osteoarthritis diagnosed from November 2014 to April 2015 were classified as mild, moderate and severe cases. All of the patients were divided into control group (treated by glucosamine hydrochloride only) and trial group (treated by calcitonin combined with glucosamine hydrochloride) via table of random sampling numbers (with 78 patients in each group). The West Ontario and Manchester University (WOMAC) score was recorded at the 6th week and the 3rd month after the medication treatment. ResultsIn the patients with mild osteoarthritis, there were significant differences in WOMAC score of both groups at the 6th week and the 3rd month after treatment compared with those before the treatment (P<0.05); there were no significant differences between the two groups at the same time points after the treatment (P>0.05). In the patients with moderate osteoarthritis, WOMAC scores in the control group at the 3rd month differed much from that before the treatment (P<0.05); there were no significant differences between the two groups at the same time points after the treatment (P>0.05). In the patients with serious osteoarthritis, there was no significant difference in WOMAC scores in the control group after the treatment compared with that before the treatment (P>0.05); while in the trial group, the scores at the 3rd month after the treatment differed much from that before the treatment (P<0.05), and also from that in the control group (P<0.05). ConclusionFor mild knee osteoarthritis, the combined treatment is not superior to the single use of glucosamine hydrochloride. For moderate knee osteoarthritis, the combined treatment has faster effect than the single use of glucosamine hydrochloride. For severe osteoarthritis, the use of single glucosamine hydrochloride is not effective, while the combination of calcitonin and glucosamine hydrochloride is effective at the 3rd month after the treatment.