Objective:To investigate the effect of the ethanolic extract of Rosa laevigata Michx.fruit on rats with mesangial proliferative glomerulonephritis based on the NLRP3 inflammasome pathway.Methods:Thirty Wistar rats wer...Objective:To investigate the effect of the ethanolic extract of Rosa laevigata Michx.fruit on rats with mesangial proliferative glomerulonephritis based on the NLRP3 inflammasome pathway.Methods:Thirty Wistar rats were divided into three groups,a blank control group,a diabetic nephropathy(DN)model group,and an ethanolic extract intervention group,according to the random number table method,with 10 rats in each group.One day before the experiment,basic feeding was initiated for all the rats;the changes in activity and weight of each group of rats were observed and recorded after 7 d,and a rat model of renal function injury was established after 1 d.Results:Compared with the control group,the model group had significantly higher kidney/body ratio,24 h urine protein,serum creatinine(SCr),blood urea nitrogen(BUN),glomerular mesangial cell(GMC)count,and extracellular matrix(ECM)positive area ratio(P<0.05);the same indicators were significantly lower in the intervention group than in the model group(P<0.05).The NLRP3 inflammasome pathway in renal intrinsic cells was activated in the intervention group.The overactivation of NLRP3 inflammasome is known to promote interleukin(IL)-1βrelease,which was inhibited in the intervention group.Conclusion:The ethanolic extract of Rosa laevigata Michx.fruit has a protective effect on renal intrinsic cells and may be related to NLRP3 inflammasome pathway,suggesting that the fruit of Rosa laevigata Michx.has a potential role in protecting renal intrinsic cells from inflammatory damage.NLRP3 inflammasomes are involved in the development of various chronic inflammatory diseases,such as acute and chronic glomerulonephritis and renal fibrosis.展开更多
In the present work, the antioxidant activity in vitro and hypolipidemic activity of the total fla-vonoids (TFs) from the Rosa laevigata Michx fruit was evaluated, and the antioxidant effect in vivo was also discussed...In the present work, the antioxidant activity in vitro and hypolipidemic activity of the total fla-vonoids (TFs) from the Rosa laevigata Michx fruit was evaluated, and the antioxidant effect in vivo was also discussed. The TFs exhibited a high scavenging effect on 2, 2-diphenyl-1- picrylhydrazyl (?DPPH) with IC50 values 0.01 mg/mL, and a stong reduce power in the test. Hyperli-pemic mice were intragastric administrated with TFs (25, 50 mg/kg/day) for 4 weeks, and fenofi-brate was used as the positive reference sub-stance. After the experiment, the levels of TC (total cholesterol), TG (triglyceride), LDL- C (low density lipoprotein-cholesterol) of the mice ad-ministrated with high-dose of TFs were mark-edly declined by 45.02%, 33.86% and 73.68%, re-spectively, while HDL-C (high density lipopro-tein-cholesterol) was significantly increased com-pared with model group. To investigate the hepatoprotective effect, histopathological assay, ALT (alanine aminotransferase), AST (aspartate aminotransefrase) and ALP (alkaline phosphatase) were also studied, and the results showed that TFs exhibited a favorable effect on liver protec-tion, of which the levels of ALT, AST and ALP were elevated by 55.85%, 29.15% and 25.68%, respectively. Furthermore, the TFs could sig-nificantly decrease the MDA (malondialdehyde) level and improve the levels of CAT (Catalas), SOD (superoxide dismutase), GSH (reduced glutathione), and GPX (glutathione peroxidase) compared with hyperlipemia mice. Our results suggested that TFs has a high antioxidant ac-tivity and hypolipidemic activity, which can be used as a potential medicine for cardiovascular diseases.展开更多
[ Objective] This study aimed to investigate the genetic diversity and phylogenetic relationship of 30 populations of Rosa laevigata Michx. from different origins. [ Method] Using RAPD molecular marker technique, eigh...[ Objective] This study aimed to investigate the genetic diversity and phylogenetic relationship of 30 populations of Rosa laevigata Michx. from different origins. [ Method] Using RAPD molecular marker technique, eight effective primers were screened from 35 RAPD random primers for amplification. UPGMA clus- ter analysis was performed using NTSYSpc. ver. 2.02 software. [ Result] A total of 86 loci were amplified using the screened primers, including 84 polymorphic loci, indicating an average polymorphic percentage （PPB） of 97.67%. The similarity coefficients of 30 populations of R. laevigata Michx. ranged from O. 11 to O. 58, and these populations were clustered into groups A, B and C. [ Conclusion ] R. laevigata Michx. exhibits multiple genetic polymorphism. R. laevigata Michx. populations from Guizhou Province have closer genetic relationships.展开更多
The drying process of traditional Chinese medicine Rosa laevigata Michx was investigated in a laboratory scale dryer. Drying experiments were conducted at five temperatures of 40℃, 50℃, 60℃, 70℃ and 80℃. The expe...The drying process of traditional Chinese medicine Rosa laevigata Michx was investigated in a laboratory scale dryer. Drying experiments were conducted at five temperatures of 40℃, 50℃, 60℃, 70℃ and 80℃. The experimental data were fitted to ten different thin layer drying models to select a suitable model for describing the drying process of Rosa laevigata Michx fruits. The results showed that the Midilli model had the highest value of R2 (0.999767), the lowest χ2 (0.000034) and RMSE (0.003616) among the ten models considered. The drying process of Rosa laevigata Michx fruits consisted of 1st falling rate period and 2nd falling rate period. The effective moisture diffusivity was found in the range of 1.49 - 30.20 × 10-11 m2·s-1. The value of activation energy obtained by plotting lnD versus 1/T is about 36 kJ·mol-1.展开更多
[Objectives]This study was conducted to optimize the optimal process conditions for extracting polysaccharides from Rose laevigate Michx.with hot water.[Methods]The extraction rate of R.laevigate was used as an evalua...[Objectives]This study was conducted to optimize the optimal process conditions for extracting polysaccharides from Rose laevigate Michx.with hot water.[Methods]The extraction rate of R.laevigate was used as an evaluation index,and extraction temperature,material-to-liquid ratio,extraction time and extraction times were selected as influencing factors.On the basis of single factor tests,L 9(34)orthogonal tests were carried out for optimization,and the content of polysaccharides was determined by the phenol-sulfuric acid method.The in vitro antioxidant activity of the extracted R.laevigate polysaccharides was studied.[Results]The effects of various influencing factors on the extraction rate of R.laevigate polysaccharides ranked as material-liquid ratio>extraction temperature>extraction times>extraction time.The optimal extraction process was extraction temperature 80℃,extraction time 2 h,and material-to-liquid ratio 1∶25,extraction times 3 times,under which the extraction rate was(9.55±0.12)%.R.laevigate polysaccharides had certain scavenging capacities of DPPH free radicals and hydroxyl free radicals,and its scavenging capacity of DPPH free radicals was better than that of hydroxyl free radicals.[Conclusions]This study provides a theoretical basis for the optimization of the extraction process of R.laevigate polysaccharides and the in-depth development and application of polysaccharides.展开更多
基金This work was supported by the Health Commission of Hebei Province under the project Chuanxiong Extract Improves Inflammatory Response in Rats with Pyelonephritis Through IL-6/STAT3 Signaling Pathway(Project Number:20231486).
文摘Objective:To investigate the effect of the ethanolic extract of Rosa laevigata Michx.fruit on rats with mesangial proliferative glomerulonephritis based on the NLRP3 inflammasome pathway.Methods:Thirty Wistar rats were divided into three groups,a blank control group,a diabetic nephropathy(DN)model group,and an ethanolic extract intervention group,according to the random number table method,with 10 rats in each group.One day before the experiment,basic feeding was initiated for all the rats;the changes in activity and weight of each group of rats were observed and recorded after 7 d,and a rat model of renal function injury was established after 1 d.Results:Compared with the control group,the model group had significantly higher kidney/body ratio,24 h urine protein,serum creatinine(SCr),blood urea nitrogen(BUN),glomerular mesangial cell(GMC)count,and extracellular matrix(ECM)positive area ratio(P<0.05);the same indicators were significantly lower in the intervention group than in the model group(P<0.05).The NLRP3 inflammasome pathway in renal intrinsic cells was activated in the intervention group.The overactivation of NLRP3 inflammasome is known to promote interleukin(IL)-1βrelease,which was inhibited in the intervention group.Conclusion:The ethanolic extract of Rosa laevigata Michx.fruit has a protective effect on renal intrinsic cells and may be related to NLRP3 inflammasome pathway,suggesting that the fruit of Rosa laevigata Michx.has a potential role in protecting renal intrinsic cells from inflammatory damage.NLRP3 inflammasomes are involved in the development of various chronic inflammatory diseases,such as acute and chronic glomerulonephritis and renal fibrosis.
文摘In the present work, the antioxidant activity in vitro and hypolipidemic activity of the total fla-vonoids (TFs) from the Rosa laevigata Michx fruit was evaluated, and the antioxidant effect in vivo was also discussed. The TFs exhibited a high scavenging effect on 2, 2-diphenyl-1- picrylhydrazyl (?DPPH) with IC50 values 0.01 mg/mL, and a stong reduce power in the test. Hyperli-pemic mice were intragastric administrated with TFs (25, 50 mg/kg/day) for 4 weeks, and fenofi-brate was used as the positive reference sub-stance. After the experiment, the levels of TC (total cholesterol), TG (triglyceride), LDL- C (low density lipoprotein-cholesterol) of the mice ad-ministrated with high-dose of TFs were mark-edly declined by 45.02%, 33.86% and 73.68%, re-spectively, while HDL-C (high density lipopro-tein-cholesterol) was significantly increased com-pared with model group. To investigate the hepatoprotective effect, histopathological assay, ALT (alanine aminotransferase), AST (aspartate aminotransefrase) and ALP (alkaline phosphatase) were also studied, and the results showed that TFs exhibited a favorable effect on liver protec-tion, of which the levels of ALT, AST and ALP were elevated by 55.85%, 29.15% and 25.68%, respectively. Furthermore, the TFs could sig-nificantly decrease the MDA (malondialdehyde) level and improve the levels of CAT (Catalas), SOD (superoxide dismutase), GSH (reduced glutathione), and GPX (glutathione peroxidase) compared with hyperlipemia mice. Our results suggested that TFs has a high antioxidant ac-tivity and hypolipidemic activity, which can be used as a potential medicine for cardiovascular diseases.
基金Supported by Special Fund for Research and Development of Modernization Science and Technology Industry of Traditional Chinese Medicines in Guizhou Province(QKHZYZ[2012]No.3004)
文摘[ Objective] This study aimed to investigate the genetic diversity and phylogenetic relationship of 30 populations of Rosa laevigata Michx. from different origins. [ Method] Using RAPD molecular marker technique, eight effective primers were screened from 35 RAPD random primers for amplification. UPGMA clus- ter analysis was performed using NTSYSpc. ver. 2.02 software. [ Result] A total of 86 loci were amplified using the screened primers, including 84 polymorphic loci, indicating an average polymorphic percentage （PPB） of 97.67%. The similarity coefficients of 30 populations of R. laevigata Michx. ranged from O. 11 to O. 58, and these populations were clustered into groups A, B and C. [ Conclusion ] R. laevigata Michx. exhibits multiple genetic polymorphism. R. laevigata Michx. populations from Guizhou Province have closer genetic relationships.
文摘The drying process of traditional Chinese medicine Rosa laevigata Michx was investigated in a laboratory scale dryer. Drying experiments were conducted at five temperatures of 40℃, 50℃, 60℃, 70℃ and 80℃. The experimental data were fitted to ten different thin layer drying models to select a suitable model for describing the drying process of Rosa laevigata Michx fruits. The results showed that the Midilli model had the highest value of R2 (0.999767), the lowest χ2 (0.000034) and RMSE (0.003616) among the ten models considered. The drying process of Rosa laevigata Michx fruits consisted of 1st falling rate period and 2nd falling rate period. The effective moisture diffusivity was found in the range of 1.49 - 30.20 × 10-11 m2·s-1. The value of activation energy obtained by plotting lnD versus 1/T is about 36 kJ·mol-1.
文摘[Objectives]This study was conducted to optimize the optimal process conditions for extracting polysaccharides from Rose laevigate Michx.with hot water.[Methods]The extraction rate of R.laevigate was used as an evaluation index,and extraction temperature,material-to-liquid ratio,extraction time and extraction times were selected as influencing factors.On the basis of single factor tests,L 9(34)orthogonal tests were carried out for optimization,and the content of polysaccharides was determined by the phenol-sulfuric acid method.The in vitro antioxidant activity of the extracted R.laevigate polysaccharides was studied.[Results]The effects of various influencing factors on the extraction rate of R.laevigate polysaccharides ranked as material-liquid ratio>extraction temperature>extraction times>extraction time.The optimal extraction process was extraction temperature 80℃,extraction time 2 h,and material-to-liquid ratio 1∶25,extraction times 3 times,under which the extraction rate was(9.55±0.12)%.R.laevigate polysaccharides had certain scavenging capacities of DPPH free radicals and hydroxyl free radicals,and its scavenging capacity of DPPH free radicals was better than that of hydroxyl free radicals.[Conclusions]This study provides a theoretical basis for the optimization of the extraction process of R.laevigate polysaccharides and the in-depth development and application of polysaccharides.
