Effect of Genkwa Flos on Transient Receptor Potential Vanilloid 1 of Thermosensitive Channel / 中国实验方剂学杂志

Objective:To study the effect of Genkwa Flos on the thermosensitive channel, transient receptor potential vanilloid 1 (TRPV1) by electrophysiological whole cell patch clamp technique and animal behavior experiment, in order to explore its mechanism. Method:The whole-cell patch clamp technique was used to measure transmembrane currents induced by 75%ethanol extract from different concentrations of Genkwa Flos in HEK293 cells that expressed human TRPV1.TRPV1 specific antagonist capsaicin was used to observe whether it could inhibit the transmembrane current induced by Genkwa Flos. Totally 30 C57BL/6 mice were taken for behavioral detection, and divided into blank group (6 mice), high-dose group (6 mice), medium-dose group (6 mice), low-dose group (6 mice) and ibuprofen positive control group (6 mice). Genkwa Flos treatment group was given low dose (0.195 g·kg-1·d-1), medium dose (0.39 g·kg-1·d-1) and high dose (0.78 g·kg-1·d-1) by gavage. One hour later, the changes of behavioral latency of cold pain and hot pain in mice were observed in cold plate at (0±2)℃ and hot plate at (55±1)℃. Result:Whole cell patch clamp experiment showed that 75%ethanol extract of Genkwa Flos in hTRPV1/HEK293 cells could activate TRPV1 channel to generate obvious transmembrane current, which was similar with that generated by the known TRPV1 agonist capsaicin in current density and current-voltage relationship. The dose-effect experiments showed that compared with extracellular fluid, 10 g·L-1 ethanol extract of Genkwa Flos could activate hTRPV1/HEK293 cells to induce significant transmembrane current (P-1 ethanol extract of Genkwa Flos was more than 3 g·L-1(P-1 ethanol extract of Genkwa Flos. In the experiment of cold plate and hot plate in mice, there was a dose-effect relationship between the latencies of cold pain behavior and hot pain behavior in mice prolonged by Genkwa Flos. In the experiment of cold plate, compared with the blank group, the cold pain behavior latency of mice in the medium-dose group was significantly prolonged (PPPPPConclusion:More than one TRPV1 agonist was included in 75%ethanol extract of Genkwa Flos. The warm, analgesic and anti-inflammatory effects of Genkwa Flos may be a series of effects after activation of TRPV1.

Referencing and inosculating--discussion on modern research strategy for ethnomedicines / 中国中药杂志

This article reviewed the current situation of ethnomedicines in China, and propos that the important research on ethnomedicine is to focus on the theoretical and empirical characteristics of ethnomedicine and the special features in the processes of collecting,processing and clinical application of ethnomedicine, which will be benefit to find the research principles and methods with the characteristics of ethnomedicine. These principles include making clear of the effective substances and mechanisms, and theoretical and empirical characteristics of ethnomedicine. The three methods in the new drug discovery technology system for ethnomedicine are to solve the difference in varieties of traditional medical systems depending on finding the similarities of them, to find the conjunction in varieties of traditional medical systems through the key-herbs, and to find medicinal sources in varieties of traditional medical systems according to pharmaphylogeny.

Effects of Betel shisanwei ingredients pill on AC-cAMP-PKA signal transduction pathways in hippocampus and prefrontal cortex of depressive rats / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the effects of Mongolian pharmaceutical Betel shisanwei ingredients pill on AC-cAMP-PKA signal transduction pathways in hippocampus and prefrontal cortex of depressive rats.</p><p><b>METHOD</b>Sixty male Wistar rats were randomly divided into six groups according to the sugar consumption test (10 rats in each group), normal control group,model group,fluoxetine group (3.3 mg x kg(-1)) and low dose, medium dose and high dose group (0.25, 0.5, 1 g x kg(-1)) of Betel shisanwei ingredients pill. Except the normal control,the other groups were treated with the chronic unpredictable mild stress stimulation combined with lonely raising for 28 days. 10 mL x kg(-1) of drugs were given to each rat once daily,continuously for 28 days. The AC activity of the hippocampus and prefrontal cortex were determined by radiation immunity analysis (RIA), while cAMP and PKA quantity were determinated by Enzyme-linked immunosorbent (ELISA).</p><p><b>RESULT</b>The AC activity, cAMP and PKA quantity of hippocampus and prefrontal of mouse model of Chronic stress depression decreased significantly than those of control group (P < 0.05 or P < 0.01). However, the AC activity, cAMP and PKA quantity of rat hippocampus and prefrontal cortex in the fluoxetine group and the Mongolian pharmaceutical Betel shisanwei ingredients pill group indecreased significantly than those of model group (P < 0.01 or P < 0.05). Especially for the high dose group of Mongolian pharmaceutical Betel shisanwei ingredients pill.</p><p><b>CONCLUSION</b>The AC-cAMP-PKA signal transduction pathways in hippocampus and prefrontal cortex of depression model of rats is down-regulated, whereas Mongolian pharmaceutical Betel shisanwei ingredients pill could up-regulated it to resist depression.</p>

Effect of Chinese herb medicine compound on bone loss in rats under 3 weeks simulated weightlessness: preliminary study / 中国骨伤

<p><b>OBJECTIVE</b>To investigate the effect of Chinese herb medicine compound on bone lose in rats under 3 weeks simulated weightlessness, and to observe the synergistic action of other ingredients in the compound on calcium.</p><p><b>METHODS</b>Thirty male Wistar rats were divided into 3 groups: control group, tail-suspend group, tail-suspend and medicine group which took Chinese herb medicine compound (contains Radix Rehmanniae Praeparata, Radix Achyranthis Bidentatae, Radix Astragali, Radix Angelicae Sinensis, Concha Ostreae prepared by acetic acid) by gastric administration. After 3 weeks simulated weightlessness, serum calcium (Ca), phosphorus (P), bone mineral density (BMD) and content (BMC), bone mechanical properties (MEC) were observed.</p><p><b>RESULTS</b>At the end of the experiment, serum Ca and P increased significantly (P<0.01), BMD and BMC of posterior body decreased significantly (P< 0.01) in tail suspend rats, compared with in the control group. In rats of tail suspended and medicine group, the increase degree of serum Ca and P were smaller, BMD and BMC of posterior body increased significantly (P<0.01 or 0.05), and MEC also tend to increase.</p><p><b>CONCLUSION</b>Bone mass of posterior body lose significantly, with mechanical property significantly decrease in rats after 3 weeks simulated weightlessness. Chinese herb medicine compound is effective to prevent the change of bone. Simple calcium supplement can not prevent simulated weightlessness induced bone loss, therefore other ingredients in the compound may perform synergistic action to calcium (Concha Ostreae prepared by acetic acid).</p>

Comparative researches on medicinal property theories of traditional Chinese medicine and traditional Mongolian medicinal herbs / 中国中药杂志

This article reveals the similarities and differences between the two materia medica systems of traditional Chinese medicine and traditional Mongolian medicine by comparing the medicinal property theories of these two; our expectations are the mutual profits and complementation of the two traditional medicines from each other, a broader clinical use of natural medicinal herbs, and then, a development of traditional medicines.

Effects of Chinese compound prescription on bone metabolism of weightlessness rats simulated by suspension / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effects of Chinese medicine compound on bone metabolism of weightlessness rats simulated by tail suspension.</p><p><b>METHOD</b>Fifty Wistar rats were divided into 5 groups randomly: control group, model group, and low does, medium dose and high does treated group. The experiment period lasted 21 days. After the Chinese compound prescription and distilled water were orally given to treated groups, and control and model group for 7 days, respectively, the tail suspension experiment was performed for treated and model group, meanwhile administration of Chinese compound prescription and distilled water still lasted until the end of the experiment. Blood serum was collected for determination of alkaline phosphatase (ALP), bone gla protein (BGP), tartrate-resistant acid phosphatase (TRAP), femoral bone HOP. The changes of bone mineral density (BMD) of femoral bone and lumbar vertebra were observe.</p><p><b>RESULT</b>Compared with control group, the ALP level of model group was markedly decreased (P < 0.05), no change of BGP, TRAP was not observed, the BMD of femoral bone and lumbar vertebra were decreased remarkably (P < 0.05), Compared with model group, the change of ALP level of treated groups was not significant for all treated groups, the BGP level and BMD for medium dose group were increased (P < 0.05), the TRAP level for medium dose and high does groups was decreased (P < 0.05)</p><p><b>CONCLUSION</b>The Chinese compound prescription can improve the bone formation and prevent bone loss via inhibiting bone absorption and improving ossify, bone mineral deposition and mineralization as well as increasing BMD, which leads to prevention and treatment of bone loss.</p>

Effects on rats' bone mineral density and bone biomechanics by suspensory simulated weightlessness and removing suspension / 中国骨伤

<p><b>OBJECTIVE</b>To study the effects on rats' bone mineral density and bone biomechanics by suspensory simulated weightlessness and removing suspension.</p><p><b>METHODS</b>Twenty Wistar rats were divided into two groups randomly as control group and model group. Suspend the model group rats for 14 days, then remove suspension and continue to feed for another 14 days. Feed control group rats for 28 days. Detect the bone mineral density (BMD) in vivo of cranial bone, second thoracic vertebra, fourth lumbar vertebra, pelvis, right radioulna and right femoral bone of each group at the 14th day. At the 28th day,execute all the rats and take out of right femoral bone and fourth lumbar vertebra for detecting BMD and the intensity of biomechanics.</p><p><b>RESULTS</b>At the 14th day in experiment, being compared with control group,the BMD of femoral bone, pelvis and lumbar vertebra in model group decreased significantly (P < 0.001, P < 0.001, P < 0.01) and the change of BMD of cranial bone, thoracic vertebra and radioulna in model group was not remarkable (P > 0.05). At the 28th day in experiment, the BMD of femoral bone and lumbar vertebra, the maximal load of femoral bone decreased significantly in model group as compared with control group (P < 0.01, P < 0.001, P < 0.01).</p><p><b>CONCLUSION</b>BMD in vive body showed that suspensory simulated weightlessness for 14 days could cause disorder of bone metabolism and remarkable mineral loss of weight bearing bone, even BMD and biomechanical intensity of weight bearing bone decrease obviously when removing suspension for 14 days. The results suggest that the disorder of bone metabolism could not be recovered in short time.</p>

Effects of pingyu capsule on signal transduction of rats with chronic stress-induced depression / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the effects of Pingyu capsule on such important regulatory factors as cAMP, PKA and PKC of the signal transduction in rats with chronic stress-induced depression.</p><p><b>METHOD</b>Wistar male rats were randomly divided into control group, model group, paroxetine group, and Pingyu capsule low, middle and high doses groups; rats in all groups but the control group were fed in single cage for 21 days and were given such irritations as lightening stroke on pelma, ice water swimming, pyretic fumigation and tail clipping during this period; lobe cortex and hippocampus of all rats were taken out for detection of the cAMP content by means of radioactive immunization, PKA and PKC content by Elisa, and the PKA and PKC activity by radioactive isotope.</p><p><b>RESULT</b>Content of cAMP in lobe cortex and hippocampus, content and activity of PKA in hippocampus, and content of PKC in lobe cortex of rats in the model group were lower than those in the normal group. Pingyu capsule and paroxetine can increase them.</p><p><b>CONCLUSION</b>The anti-depression effect of Pingyu capsule maybe related to its function of adjusting the signal transduction of cAMP-PKA.</p>

Establishing scientific evaluation view to promote traditional Chinese medicine / 中华中医药杂志

Traditional Chinese Medicine(TCM) makes great contributions to the prosperous growth and people's health.But understanding deviation and imperfect evaluation system of TCM affect the healthy development of TCM.Clinic practice is the motive power of TCM,and curative effect is the key of TCM researches,and the scientific evaluation system is the safeguard for a healthy development of TCM.So we should focus on clinical researches of stubborn diseases and emergency cases to satisfy social demand and upgrade the position of TCM in the medical system.At the same time,functional disease must be explored to show the advantage of TCM.Our mission is to establish a scientific objective evaluation system to accurately understand TCM and take it as the turning point to give an impetus to theoretical breakthrough of the basic studies to promote an overall and healthy development of TCM.