Objective To investigate the effects of simple hypobaric hypoxia on parameters of hematology and blood rheology in order to establish a rat model of simulated high altitude polycythemia(HAPC) for the study of pathophy...Objective To investigate the effects of simple hypobaric hypoxia on parameters of hematology and blood rheology in order to establish a rat model of simulated high altitude polycythemia(HAPC) for the study of pathophysiologic mechanisms and medical prevention and treatment of HAPC.Methods Fortyeight male Wistar rats were randomly divided into three normal control groups and three hypoxia model groups.Normal control group rats were bred in normoxia conditions,and hypoxia group rats were subjected to hypoxic exposure for 8 hours per day at simulated 5 500 m high altitude in a hypobaric chamber.After hypoxic exposure for 2,4,12 weeks,one group of normal control and hypoxia model rats were killed and blood was collected,respectively.Then parameters of erythrocyte and blood rheology were examined.Results Mucous membrane of hypoxia model rats showed obviously cyanosis after 2 weeks hypoxic exposure.Hemoglobin concentration of hypoxia model rats were beyond 210 g/L after 2 weeks,4 weeks and 12 weeks hypoxia exposure and significantly increased than that of normal control rats respectively.Besides,RBC counts,hematocrit,whole blood viscosity,erythrocyte aggregation index of hypoxia model rats were all notably higher than those of normal control rats respectively.Conclusion A rat model of high altitude polycythemia can be rapidly established by hypobaric hypoxia exposure at simulated 5 500 m high altitude for 8 hours daily.展开更多
Objective: To investigate the curative effect of Tongmai Huoxue Decoction combined with warm needling on the treatment of High altitude polycythemia (HAPC), and to analyze the changes of hemorheology and antioxidant a...Objective: To investigate the curative effect of Tongmai Huoxue Decoction combined with warm needling on the treatment of High altitude polycythemia (HAPC), and to analyze the changes of hemorheology and antioxidant ability before and after treatment. Methods: A total of 90 HAPC patients were randomly divided into control group and observation group. The control group was treated with low molecular weight dextran and captopril. On the basis of this, the observation group was supplemented with Tongmai Huoxue Decoction combined with warm needling. Hemorheology and antioxidant markers were measured before and after treatment in all subjects. Results: Before treatment, there were no significant differences in the hemorheology indexes between the control group and the observation group. After treatment, the two groups of hemorheology related indicators were significantly lower than those before treatment, including whole blood low shear reduction viscosity, whole blood high shear reduction viscosity, plasma viscosity, Hb, Hct and RBC. The levels of the observation group were significantly lower than that of the control group. Before treatment, there was no significant difference in antioxidant indexes between the control group and the observation group. After treatment, the levels of serum superoxide dismutase (SOD) and glutathione (GSH) in the two groups were higher than those in the pre-treatment, while the content of malondialdehyde (MDA) was lower than that before treatment. The levels of serum SOD and GSH in the observation group were higher than those in the control group, and the MDA content was lower than that in the control group. Conclusion: Routine treatment of Western medicine combined with Tongmai Huoxue Decoction joint warm needling method may reduce hemoglobin, improve hemorheology and improve antioxidant ability in HAPC patients, and it may be one of the potential effective drugs for adjuvant therapy of HAPC.展开更多
Resveratrol, as a natural polyphenolic compound, has a wide range of beneficial effects, which includes anti-tumor, cardiovascular protection, anti-oxidant and estrogen-like effects, and so on. Its various physiologic...Resveratrol, as a natural polyphenolic compound, has a wide range of beneficial effects, which includes anti-tumor, cardiovascular protection, anti-oxidant and estrogen-like effects, and so on. Its various physiological properties are closely related to the therapeutic principle for prevention and treatment of high altitude hypoxia injury. Resveratrol may play an important role in relieving or curing high altitude diseases, especially high altitude polycythemia(HAPC). However, the literature about study and application of resveratrol in plateau medicine field is rarely reported up to now. In this review, we summarized the physiological effects of resveratrol, discussed the possible main principle of resveratrol for HAPC therapy, and looked forward to resveratrol's perspective or potential application in high altitude medicine.展开更多
Objective: To explore the protective effects of Tibetan medicine Zuo-Mu-A Decoction(佐木阿汤, ZMAD) on the blood parameters and myocardium of high altitude polycythemia(HAPC) model rats. Methods: Forty male Wistar rat...Objective: To explore the protective effects of Tibetan medicine Zuo-Mu-A Decoction(佐木阿汤, ZMAD) on the blood parameters and myocardium of high altitude polycythemia(HAPC) model rats. Methods: Forty male Wistar rats were randomly divided into 4 groups by a random number table, including the normal, model, Rhodiola rosea L.(RRL) and ZMAD groups(10 in each group). Every group was raised in Lhasa to create a HAPC model except the normal group. After modeling, rats in the RRL and the ZMAD groups were administered intragastrically with RRL(20 mL/kg) and ZMAD(7.5 mL/kg) once a day for 2 months, respectively; for the normal and the model groups, 5 mL of distilled water was administered intragastrically instead of decoction. Then routine blood and hematologic rheology parameters were taken, levels of erythropoietin and 8-hydroxy-2’-deoxyguanosine(8-OHd G) were tested, and ultrastructural change in the left ventricular myocardium was observed using transmission electron microscopy. Results: Compared with the model group, ZMAD significantly reduced the red blood cell count, hemoglobin levels, whole blood viscosity at low/middle shear rates, plasma viscosity, erythrocyte electrophoretic time, erythropoietin and 8-OHd G levels, and also increased the erythrocyte deformation index(P<0.05). There was no difference in all results between the RRL and the ZMAD groups. The cardiac muscle fibers were well-protected, mitochondrial matrix swelled mildly and ultrastructure changes were less prominent in the ZMAD group compared with the model group. Conclusion: ZMAD has significant protective effects on the blood parameters against HAPC, and also has the beneficial effect in protecting against myocardial injury.展开更多
基金supported by grants from National New Drug Research and Development of Key Project (2011ZXJ09105-05B)the National Natural Science Foundation(81171870,81471812)
文摘Objective To investigate the effects of simple hypobaric hypoxia on parameters of hematology and blood rheology in order to establish a rat model of simulated high altitude polycythemia(HAPC) for the study of pathophysiologic mechanisms and medical prevention and treatment of HAPC.Methods Fortyeight male Wistar rats were randomly divided into three normal control groups and three hypoxia model groups.Normal control group rats were bred in normoxia conditions,and hypoxia group rats were subjected to hypoxic exposure for 8 hours per day at simulated 5 500 m high altitude in a hypobaric chamber.After hypoxic exposure for 2,4,12 weeks,one group of normal control and hypoxia model rats were killed and blood was collected,respectively.Then parameters of erythrocyte and blood rheology were examined.Results Mucous membrane of hypoxia model rats showed obviously cyanosis after 2 weeks hypoxic exposure.Hemoglobin concentration of hypoxia model rats were beyond 210 g/L after 2 weeks,4 weeks and 12 weeks hypoxia exposure and significantly increased than that of normal control rats respectively.Besides,RBC counts,hematocrit,whole blood viscosity,erythrocyte aggregation index of hypoxia model rats were all notably higher than those of normal control rats respectively.Conclusion A rat model of high altitude polycythemia can be rapidly established by hypobaric hypoxia exposure at simulated 5 500 m high altitude for 8 hours daily.
文摘Objective: To investigate the curative effect of Tongmai Huoxue Decoction combined with warm needling on the treatment of High altitude polycythemia (HAPC), and to analyze the changes of hemorheology and antioxidant ability before and after treatment. Methods: A total of 90 HAPC patients were randomly divided into control group and observation group. The control group was treated with low molecular weight dextran and captopril. On the basis of this, the observation group was supplemented with Tongmai Huoxue Decoction combined with warm needling. Hemorheology and antioxidant markers were measured before and after treatment in all subjects. Results: Before treatment, there were no significant differences in the hemorheology indexes between the control group and the observation group. After treatment, the two groups of hemorheology related indicators were significantly lower than those before treatment, including whole blood low shear reduction viscosity, whole blood high shear reduction viscosity, plasma viscosity, Hb, Hct and RBC. The levels of the observation group were significantly lower than that of the control group. Before treatment, there was no significant difference in antioxidant indexes between the control group and the observation group. After treatment, the levels of serum superoxide dismutase (SOD) and glutathione (GSH) in the two groups were higher than those in the pre-treatment, while the content of malondialdehyde (MDA) was lower than that before treatment. The levels of serum SOD and GSH in the observation group were higher than those in the control group, and the MDA content was lower than that in the control group. Conclusion: Routine treatment of Western medicine combined with Tongmai Huoxue Decoction joint warm needling method may reduce hemoglobin, improve hemorheology and improve antioxidant ability in HAPC patients, and it may be one of the potential effective drugs for adjuvant therapy of HAPC.
基金supported by grants from the National Natural Science Foundation of China(81471812)National New Drug Research and Development of Key Project(2011ZXJ09202-0212011ZXJ09105-05B)
文摘Resveratrol, as a natural polyphenolic compound, has a wide range of beneficial effects, which includes anti-tumor, cardiovascular protection, anti-oxidant and estrogen-like effects, and so on. Its various physiological properties are closely related to the therapeutic principle for prevention and treatment of high altitude hypoxia injury. Resveratrol may play an important role in relieving or curing high altitude diseases, especially high altitude polycythemia(HAPC). However, the literature about study and application of resveratrol in plateau medicine field is rarely reported up to now. In this review, we summarized the physiological effects of resveratrol, discussed the possible main principle of resveratrol for HAPC therapy, and looked forward to resveratrol's perspective or potential application in high altitude medicine.
基金Supported by the National Natural Science Foundation of China(No.81260567)
文摘Objective: To explore the protective effects of Tibetan medicine Zuo-Mu-A Decoction(佐木阿汤, ZMAD) on the blood parameters and myocardium of high altitude polycythemia(HAPC) model rats. Methods: Forty male Wistar rats were randomly divided into 4 groups by a random number table, including the normal, model, Rhodiola rosea L.(RRL) and ZMAD groups(10 in each group). Every group was raised in Lhasa to create a HAPC model except the normal group. After modeling, rats in the RRL and the ZMAD groups were administered intragastrically with RRL(20 mL/kg) and ZMAD(7.5 mL/kg) once a day for 2 months, respectively; for the normal and the model groups, 5 mL of distilled water was administered intragastrically instead of decoction. Then routine blood and hematologic rheology parameters were taken, levels of erythropoietin and 8-hydroxy-2’-deoxyguanosine(8-OHd G) were tested, and ultrastructural change in the left ventricular myocardium was observed using transmission electron microscopy. Results: Compared with the model group, ZMAD significantly reduced the red blood cell count, hemoglobin levels, whole blood viscosity at low/middle shear rates, plasma viscosity, erythrocyte electrophoretic time, erythropoietin and 8-OHd G levels, and also increased the erythrocyte deformation index(P<0.05). There was no difference in all results between the RRL and the ZMAD groups. The cardiac muscle fibers were well-protected, mitochondrial matrix swelled mildly and ultrastructure changes were less prominent in the ZMAD group compared with the model group. Conclusion: ZMAD has significant protective effects on the blood parameters against HAPC, and also has the beneficial effect in protecting against myocardial injury.
