OBJECTIVE: To investigate the effect and underlying mechanisms of combined medicated thread moxibustion therapy plus needle picking therapy of Zhuang nationality medicine on antioxidant levels in a rat model of sciati...OBJECTIVE: To investigate the effect and underlying mechanisms of combined medicated thread moxibustion therapy plus needle picking therapy of Zhuang nationality medicine on antioxidant levels in a rat model of sciatica.METHODS: One hundred Wistar rats, of specific pathogen free level, were randomly divided into five groups: normal control group, model group,medicated thread moxibustion group, needle picking group, and combination group. Each group contained 20 rats. In the model, medicated thread moxibustion, needle picking, and combination groups,sciatica models were established through chronicconstriction injury of the sciatic nerve. After the model was established, the rats in the medicated thread moxibustion, needle picking, and combination groups were given the corresponding therapies for 21 days. The control and model groups received no treatment. Reactive oxygen species, superoxide dismutase, malondialdehyde, and total antioxidant capacity changes were determined.Nicotinamide adenine dinucleotide phosphate(NADPH) oxidase subunit NADPH oxidases 4(NOX4) m RNA expression and the morphology of cells were observed to detect apoptosis of gamma-aminobutyric acid ergic(GABAergic) neurons.RESULTS: Compared with control group, reactive oxygen species and malondialdehyde levels rose significantly in the model group(P < 0.01), while superoxide dismutase and total antioxidant capacity levels were lowered(P < 0.05). Compared with the model group, reactive oxygen species and malondialdehyde decreased in the needle picking group(P < 0.05), while superoxide dismutase levels were increased(P < 0.05); reactive oxygen species and malondialdehyde significantly decreased in the combination group(P < 0.01). In addition, the model group had higher NOX4 m RNA expression than that of the control group(P < 0.05), and the combination group had lower expression levels than that of the model group(P < 0.05). Apoptosis of GABAergic neurons was observed in the model group, and was attenuated after combined therapy.CONCLUSION: The medicated thread moxibustion therapy plus needle picking therapy of Zhuang nationality medicine can prevent oxidative damage in the rat model of sciatica via down-regulating NOX4 expression, improving antioxidant capacity, and in-hibiting the oxidative damage pathway of GABAergic neurons.展开更多
A high-speed broadband tunable microwave source utilizing the wavelength tunable characteristics of distributed Bragg reflector(DBR) laser is proposed and demonstrated.The wavelength tuning of the laser is achieved in...A high-speed broadband tunable microwave source utilizing the wavelength tunable characteristics of distributed Bragg reflector(DBR) laser is proposed and demonstrated.The wavelength tuning of the laser is achieved instantaneously by controlling the voltage of the phase section of the DBR laser.By means of optical delay self-heterodyne technology,the microwave signal with the property of frequency broadband tuning is generated.Sweep speeds of 5 and 40 μs of the sweep-frequency source prototype were achieved and the maximum tuning range was up to 38.45 GHz.展开更多
An inclusion complex of cyclic bis(zinc porphyrin) 1 with 5,15-dipyridylporphyrin derivative 3 has been designed and constructed. The complex formation is induced by Zn-N coordination, and is robust (Kassoc ~ 106 L/mo...An inclusion complex of cyclic bis(zinc porphyrin) 1 with 5,15-dipyridylporphyrin derivative 3 has been designed and constructed. The complex formation is induced by Zn-N coordination, and is robust (Kassoc ~ 106 L/mol) due to the presence of the cage effect of cyclic bis(zinc porphyrin). The cage-like complex as an entity is stable enough, and also convenient to achieve relative movement between the bis(zinc porphyrin) host and the dipyridylporphyrin guest connected by Zn-N coordination. The characteristics of these assemblies have been demonstrated by 1 H NMR, UV-vis, and fluorescence spectra. The results show its potential applications as a molecular gyroscope in molecular machines.展开更多
Both tclomerase and Bcl-2 are important genes in controlling apoptosis. The activation of telomerase and the abnormal regulation of Bcl-2 are also closely related to carcinogenesis. However, little is known about the ...Both tclomerase and Bcl-2 are important genes in controlling apoptosis. The activation of telomerase and the abnormal regulation of Bcl-2 are also closely related to carcinogenesis. However, little is known about the linkage between telomerase and Bcl-2. The effect of activated telomerase on the expression of Bcl-2 has been investigated. It is demonstrated that in tumor and transformed cells with higher telomerase activity, Bcl-2 expression is significantly lower than that in telomerase negative or less telomerose activity cells. Further study showed that in the telomerase gene-transformed 2BS-fibroblasts, Bcl-2 expression is inhibited significantly while the exogenous telomerase catalyticsubunit gene is re-expressed in flbroblasts. Results indicated that there might be a certain linkage between the expression of telomerase and Bcl-2, and overexpression of exogenous telomerase gene might down regulate the expression of Bcl-2.展开更多
基金Supported by the National Natural Science Foundation of China(Research on Mechanism of Insomnia Treatment Administrated by Acupuncture Combined With Medicated Thread Moxibustion of Zhuang Nationality Medicine,No.81360579)
文摘OBJECTIVE: To investigate the effect and underlying mechanisms of combined medicated thread moxibustion therapy plus needle picking therapy of Zhuang nationality medicine on antioxidant levels in a rat model of sciatica.METHODS: One hundred Wistar rats, of specific pathogen free level, were randomly divided into five groups: normal control group, model group,medicated thread moxibustion group, needle picking group, and combination group. Each group contained 20 rats. In the model, medicated thread moxibustion, needle picking, and combination groups,sciatica models were established through chronicconstriction injury of the sciatic nerve. After the model was established, the rats in the medicated thread moxibustion, needle picking, and combination groups were given the corresponding therapies for 21 days. The control and model groups received no treatment. Reactive oxygen species, superoxide dismutase, malondialdehyde, and total antioxidant capacity changes were determined.Nicotinamide adenine dinucleotide phosphate(NADPH) oxidase subunit NADPH oxidases 4(NOX4) m RNA expression and the morphology of cells were observed to detect apoptosis of gamma-aminobutyric acid ergic(GABAergic) neurons.RESULTS: Compared with control group, reactive oxygen species and malondialdehyde levels rose significantly in the model group(P < 0.01), while superoxide dismutase and total antioxidant capacity levels were lowered(P < 0.05). Compared with the model group, reactive oxygen species and malondialdehyde decreased in the needle picking group(P < 0.05), while superoxide dismutase levels were increased(P < 0.05); reactive oxygen species and malondialdehyde significantly decreased in the combination group(P < 0.01). In addition, the model group had higher NOX4 m RNA expression than that of the control group(P < 0.05), and the combination group had lower expression levels than that of the model group(P < 0.05). Apoptosis of GABAergic neurons was observed in the model group, and was attenuated after combined therapy.CONCLUSION: The medicated thread moxibustion therapy plus needle picking therapy of Zhuang nationality medicine can prevent oxidative damage in the rat model of sciatica via down-regulating NOX4 expression, improving antioxidant capacity, and in-hibiting the oxidative damage pathway of GABAergic neurons.
基金supported by the National Basic Research Program of China ("973" Project) (Grant Nos. 2012CB315702, 2012CB315703)the National Natural Science Foundation of China (Grant Nos. 61090390,61275078)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 61021003)
文摘A high-speed broadband tunable microwave source utilizing the wavelength tunable characteristics of distributed Bragg reflector(DBR) laser is proposed and demonstrated.The wavelength tuning of the laser is achieved instantaneously by controlling the voltage of the phase section of the DBR laser.By means of optical delay self-heterodyne technology,the microwave signal with the property of frequency broadband tuning is generated.Sweep speeds of 5 and 40 μs of the sweep-frequency source prototype were achieved and the maximum tuning range was up to 38.45 GHz.
基金Supported by the 973 Program (Grant No. 2006CB932900)National Natural Science Foundation of China (Grant Nos. 20802038 and 20721062)Tianjin Natural Science Foundation (Grant No. 07QTPTJC29700).
文摘An inclusion complex of cyclic bis(zinc porphyrin) 1 with 5,15-dipyridylporphyrin derivative 3 has been designed and constructed. The complex formation is induced by Zn-N coordination, and is robust (Kassoc ~ 106 L/mol) due to the presence of the cage effect of cyclic bis(zinc porphyrin). The cage-like complex as an entity is stable enough, and also convenient to achieve relative movement between the bis(zinc porphyrin) host and the dipyridylporphyrin guest connected by Zn-N coordination. The characteristics of these assemblies have been demonstrated by 1 H NMR, UV-vis, and fluorescence spectra. The results show its potential applications as a molecular gyroscope in molecular machines.
基金This work was supported by the National Natural Science Foundation of China (Grant No. 39670363).
文摘Both tclomerase and Bcl-2 are important genes in controlling apoptosis. The activation of telomerase and the abnormal regulation of Bcl-2 are also closely related to carcinogenesis. However, little is known about the linkage between telomerase and Bcl-2. The effect of activated telomerase on the expression of Bcl-2 has been investigated. It is demonstrated that in tumor and transformed cells with higher telomerase activity, Bcl-2 expression is significantly lower than that in telomerase negative or less telomerose activity cells. Further study showed that in the telomerase gene-transformed 2BS-fibroblasts, Bcl-2 expression is inhibited significantly while the exogenous telomerase catalyticsubunit gene is re-expressed in flbroblasts. Results indicated that there might be a certain linkage between the expression of telomerase and Bcl-2, and overexpression of exogenous telomerase gene might down regulate the expression of Bcl-2.
