This study presents a comprehensive physicochemical analysis of neem plant leaf extracts with a focus on their potential applications in pharmaceutical and biomedical contexts. Utilizing the soxhlet extraction method ...This study presents a comprehensive physicochemical analysis of neem plant leaf extracts with a focus on their potential applications in pharmaceutical and biomedical contexts. Utilizing the soxhlet extraction method with n-hexane as the solvent, the study investigated the quantitative and qualitative composition of neem leaf extracts in reference to concentrations. The results revealed a diverse array of compounds, including cyanogenic glycoside, cardiac glycoside, tannin, steroids, phytate, flavone, oxalate, rutin, lunamarin, catechin, spatein, naringin, resveratrol, kaempferol, flavonones, epicatechin, and epihedrine, with notable concentrations. Further analyses indicated shared physicochemical properties, such as carboxyl and hydroxyl groups. Qualitative assessments affirmed the presence of flavonoid and phenolic compounds, while FTIR analysis confirmed the existence of carboxyl and hydroxyl groups. These findings emphasize the potential use of neem leaves as pharmaceutical raw materials due to their antioxidant-rich content. Additionally, the study explored the density, viscosity, saponification value, and foaming power of neem leaf extracts, providing insights into their industrial applicability. GC-MS analyses highlighted the presence of significant chemical compounds, with potential therapeutic implications. Mineral analysis demonstrated essential elements for human and animal nutrition. This study underscores neem plant leaves’ multifaceted potential across pharmaceutical, herbal medicine, cosmetic, and functional food sectors. It lays a solid foundation for further research into the specific health benefits, offering valuable insights for harnessing neem leaves’ potential in innovative products and treatments.展开更多
Micropeptin EI-964 is a cyclic peptide compound isolated from a marine cyanobacterium with potent inhibitory activity against serine proteases, particularly chymotrypsin and trypsin. It has shown promising activity ag...Micropeptin EI-964 is a cyclic peptide compound isolated from a marine cyanobacterium with potent inhibitory activity against serine proteases, particularly chymotrypsin and trypsin. It has shown promising activity against various cancer cell lines, making it a candidate for drug development. The unique structure and activity of Micropeptin EI-964 make it a promising lead compound for the development of novel serine protease inhibitors and anti-cancer drugs. Computational Chemistry and Molecular Modeling techniques can provide valuable insights into the chemical reactivity and pharmaceutical properties of Micropeptin EI-964, guiding the design and development of new compounds with enhanced bioactivity and improved drug-like properties.展开更多
Multiple emulsions are of great therapeutic interest especially in the administration of medicines which can be inactivated by digestive enzymes;moreover the researches of formulation not being often easy, a control o...Multiple emulsions are of great therapeutic interest especially in the administration of medicines which can be inactivated by digestive enzymes;moreover the researches of formulation not being often easy, a control of the different phases physicochemical parameters would be of great interest in rapid formulations and at low cost. When formulating emulsions, the preliminary tests, also known as formulation tests, constitute a step which can be long and expensive because of the quantity of reagents that can be used. A rigorous methodology could thus be of great interest, which is at the aim of our study which consists of evaluating the physico-chemical parameters of different phases used to make thus multiple emulsions. In our study, physico-chemical parameters such as conductivity, pH, density, viscosity, and surface tension have been studied by direct measurement using equipment and also by means of suitable mounting. The results showed that the pH and the surface tension have an important role in the prediction of the stability of emulsions, these latter must be of the same order of magnitude. For all phases conductivity does not have too much interest apart from helping to determine the type of the emulsion.展开更多
Objective:The objective of this study was to verify the lipid-lowering effect of Juhe Fang extract(JHFE)and to determine its characteristic chemical profile in vitro and in vivo.Methods:A hyperlipidemia model was esta...Objective:The objective of this study was to verify the lipid-lowering effect of Juhe Fang extract(JHFE)and to determine its characteristic chemical profile in vitro and in vivo.Methods:A hyperlipidemia model was established by feeding mice a high-fat diet(HFD).After treatment for 30 days,serum total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C)and low-density lipoprotein cholesterol(LDL-C)levels were measured with an automatic biochemistry analyzer.The components from JHFE obtained from in vivo and in vitro experiments were investigated using an UPLC-Q Exactive-Orbitrap MS/MS.Results:The TC,TG,and LDL-C in the serum significantly decreased and the HDL-C significantly increased after JHFE treatment.A total of 95 compounds from JHEF including 15 phenolic acids(PA),4 phenylethanoid glycosides(PG),24 flavonoids(F),14 triterpenoids(T),10 diterpenoid glycosides(D),18 alkaloids(A)and 10 others(O)were identified.Trigonelline was discovered for the first time in a herbal medicine of Juhe Fang.Furthermore,68 compounds were identified in vivo including 28 prototype compounds and 40 metabolites.The metabolic characteristics of these components were revealed including identification of new metabolites of 4-hydroxyphenyl ethyl-8-O-[a-L-arabinopyranosyl-(1/6)]-b-D-glucopyranoside(PEG)and lirinidine.A total of 43 components from JHFE were absorbed and/or metabolized.The contribution rate of each type of chemical component from JHFE to its lipidlowering effect from high to low were A,F,PG,PA,D and T.Conclusion:The results of this study showed that JHFE demonstrated a significant lipid-lowering effect in a high-fat diet(HFD)-induced hyperlipidemia mouse model.Specific types of PA,PG,F,D,T and A formed the pharmaceutical architecture of the lipid-lowering effect of JHFE.This study should prove useful for clarifying the components responsible for the lipid-lowering effect of JHFE and provide a basis for precision quality control research.展开更多
文摘This study presents a comprehensive physicochemical analysis of neem plant leaf extracts with a focus on their potential applications in pharmaceutical and biomedical contexts. Utilizing the soxhlet extraction method with n-hexane as the solvent, the study investigated the quantitative and qualitative composition of neem leaf extracts in reference to concentrations. The results revealed a diverse array of compounds, including cyanogenic glycoside, cardiac glycoside, tannin, steroids, phytate, flavone, oxalate, rutin, lunamarin, catechin, spatein, naringin, resveratrol, kaempferol, flavonones, epicatechin, and epihedrine, with notable concentrations. Further analyses indicated shared physicochemical properties, such as carboxyl and hydroxyl groups. Qualitative assessments affirmed the presence of flavonoid and phenolic compounds, while FTIR analysis confirmed the existence of carboxyl and hydroxyl groups. These findings emphasize the potential use of neem leaves as pharmaceutical raw materials due to their antioxidant-rich content. Additionally, the study explored the density, viscosity, saponification value, and foaming power of neem leaf extracts, providing insights into their industrial applicability. GC-MS analyses highlighted the presence of significant chemical compounds, with potential therapeutic implications. Mineral analysis demonstrated essential elements for human and animal nutrition. This study underscores neem plant leaves’ multifaceted potential across pharmaceutical, herbal medicine, cosmetic, and functional food sectors. It lays a solid foundation for further research into the specific health benefits, offering valuable insights for harnessing neem leaves’ potential in innovative products and treatments.
文摘Micropeptin EI-964 is a cyclic peptide compound isolated from a marine cyanobacterium with potent inhibitory activity against serine proteases, particularly chymotrypsin and trypsin. It has shown promising activity against various cancer cell lines, making it a candidate for drug development. The unique structure and activity of Micropeptin EI-964 make it a promising lead compound for the development of novel serine protease inhibitors and anti-cancer drugs. Computational Chemistry and Molecular Modeling techniques can provide valuable insights into the chemical reactivity and pharmaceutical properties of Micropeptin EI-964, guiding the design and development of new compounds with enhanced bioactivity and improved drug-like properties.
文摘Multiple emulsions are of great therapeutic interest especially in the administration of medicines which can be inactivated by digestive enzymes;moreover the researches of formulation not being often easy, a control of the different phases physicochemical parameters would be of great interest in rapid formulations and at low cost. When formulating emulsions, the preliminary tests, also known as formulation tests, constitute a step which can be long and expensive because of the quantity of reagents that can be used. A rigorous methodology could thus be of great interest, which is at the aim of our study which consists of evaluating the physico-chemical parameters of different phases used to make thus multiple emulsions. In our study, physico-chemical parameters such as conductivity, pH, density, viscosity, and surface tension have been studied by direct measurement using equipment and also by means of suitable mounting. The results showed that the pH and the surface tension have an important role in the prediction of the stability of emulsions, these latter must be of the same order of magnitude. For all phases conductivity does not have too much interest apart from helping to determine the type of the emulsion.
基金the innovative research team of the Twelfth Five-Year National Science and Technology Support Program(Grant no.2012BAI29B06)the Beijing University of Chinese Medicine of China(Grant no.2011-CXTD-12).
文摘Objective:The objective of this study was to verify the lipid-lowering effect of Juhe Fang extract(JHFE)and to determine its characteristic chemical profile in vitro and in vivo.Methods:A hyperlipidemia model was established by feeding mice a high-fat diet(HFD).After treatment for 30 days,serum total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C)and low-density lipoprotein cholesterol(LDL-C)levels were measured with an automatic biochemistry analyzer.The components from JHFE obtained from in vivo and in vitro experiments were investigated using an UPLC-Q Exactive-Orbitrap MS/MS.Results:The TC,TG,and LDL-C in the serum significantly decreased and the HDL-C significantly increased after JHFE treatment.A total of 95 compounds from JHEF including 15 phenolic acids(PA),4 phenylethanoid glycosides(PG),24 flavonoids(F),14 triterpenoids(T),10 diterpenoid glycosides(D),18 alkaloids(A)and 10 others(O)were identified.Trigonelline was discovered for the first time in a herbal medicine of Juhe Fang.Furthermore,68 compounds were identified in vivo including 28 prototype compounds and 40 metabolites.The metabolic characteristics of these components were revealed including identification of new metabolites of 4-hydroxyphenyl ethyl-8-O-[a-L-arabinopyranosyl-(1/6)]-b-D-glucopyranoside(PEG)and lirinidine.A total of 43 components from JHFE were absorbed and/or metabolized.The contribution rate of each type of chemical component from JHFE to its lipidlowering effect from high to low were A,F,PG,PA,D and T.Conclusion:The results of this study showed that JHFE demonstrated a significant lipid-lowering effect in a high-fat diet(HFD)-induced hyperlipidemia mouse model.Specific types of PA,PG,F,D,T and A formed the pharmaceutical architecture of the lipid-lowering effect of JHFE.This study should prove useful for clarifying the components responsible for the lipid-lowering effect of JHFE and provide a basis for precision quality control research.