Aged ; Aging ; drug effects ; Arteriosclerosis ; drug therapy ; Dementia ; drug therapy ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Hyperlipidemias ; drug therapy ; Medicine, Chinese Traditional ; Phytotherapy ; Yang Deficiency ; drug therapy ; Yin Deficiency ; drug therapy

Purpose With the progression of brain tissue aging, the transport and drainage characteristics of metabolites and secretory products for neurons in extracellular space occurs irreversible change. This paper aims to investigate and quantify MR tracer diffusion characteristics in cerebral interstitial fluid of elderly SD rats. Materials and Methods MR contrast agent Gd-DTPA was injected into the caudate nucleus of two groups of rats including 8 in experimental group (15-17 month old) and 15 in control group (7-10 month old). MR scan was performed at 0.25 h, 0.5 h, 1 h, 2 h, 3 h and 4 h to observe the dynamic distribution in the caudate and measure the diffusion and clearance rate. Results There was no statistically significant difference in diffusion rate and D* between control group with (3.32±0.70)×10-4 mm2/s and experimental group with (3.25±0.46)×10-4 mm2/s (t=1.739, P>0.05). The clearance rate k' was significantly different between control group (0.62±0.12)×10-4/s and experimental group (0.29±0.08)×10-4/s (t=11.602, P<0.05). Conclusion The degeneration of aging brain tissue changes the composition of extracellular space resulting in decreased speed of ISF clearance. This may cause accumulation of metabolites which eventually triggers a variety of age-related diseases.

OBJECTIVETo study the absorption, translocation and accumulation of N, P and K on Achyranthes bidentata.

METHODThe contents of N, P and K were determined by mean of sulfuric acid-hydrogen peroxide assimilating method, vanadium-ammonium molybdate colorimetric method and flame photometric method, respectively.

RESULTThe contents of N, P and K in the plant were decreasing during the growth period. The absorption rates of the three nutrients by A. Bidentata showed double-peak curves in the whole growth period, maximum absorption rate appeared in the middle ten days of October. About 8.59 kg of N, 1.36 kg of P and 7.40 kg of K were needed to produce each 100 kg root.

CONCLUSIONThe key nutrients absorption period is in the first ten days of September and in the middle ten days of October.

The standardized training is an indispensible stage for the improvement of residents' comprehensive quality and for the training of high-qualified talents.The article preliminarily explored the standardized training model for residents,which was in accordance with the characteristics of the department of cardiology mainly from four aspects:the set-up of reasonable training program,the training of practical skills,the training of humanistic quality and the training of life-long learning ability.

OBJECTIVETo discuss the central modulating mechanism of Sanyinjiao (SP 6) and the amplitude of low-frequency fluctuation (ALFF) differences of the functional brain regions between SP 6 and sham acupoint.

METHODSSixteen volunteers accepted right Sanyinjiao (SP 6) (SP 6 group) or right sham (sham group) acupuncture for two times after 24 h sleep deprivation (SD), there was two weeks between two acupunctures. The needle was retained for 4 minutes and the brain fMRI scanning was performed by 3.0 TMR every time. The ALFF consequent data was processed by REST. One-sample t-test and two-pair t-test were performed by SPM5.

RESULTSSP 6 group mainly caused ALFF change in inferior parietal lobule, posterior cingulated while sham group in precuneus, posterior cingulated. SP 6 group increased ALFF in left fusiform temporal gyrus, medial frontal gyrus with no decreased regions compared with sham group.

CONCLUSIONSRetaining needle dose influence the activity of the brain region during resting-state in both group, especially the mood-related regions. And its mechanism is probably that the relevant effect is carried out by regulating function to target organs of complex brain network comprised of relevant functional center and related brain region. There are differences between SP 6 and Sham acupoint.

Objective:To explore the curative effect and mechanism of Tongnao pill in the treatment of senile posterior circulation ischemic vertigo with phlegm and blood stasis type. Method:The 80 elderly patients with posterior circulation ischemic vertigo (phlegm and blood stasis type) admitted to Gansu Provincial Hospital of Traditional Chinese Medicine were selected as the research subjects and were randomly divided into two groups according to the hospital admission number. Those with odd numbers were classified into control group and those with even numbers were classified into observation group, with 40 cases in each group. All of the patients in both groups were given basic treatment, and the patients in control group additionally received intravenous infusion of vinpocetine on the basis of basic treatment, while the patients in observation group additionally received Tongnao pill on the basis of the treatment in control group. The clinical efficacy, traditional Chinese medicine (TCM) syndrome score, European Evaluation of Vertigo(EEV) score, dizziness handicap inventory-screening (DHI-S) score, vertebral basilar artery average blood flow velocity(Vm) and pulsatility index(PI), hemodynamic changes[mean arterial pressure(MAP), central venous pressure(CVP), right atrial pressure (RAP), left atrial pressure(LAP), cardiac output(CO), cardiac stroke volume(SV)], changes in blood viscosity and blood lipid levels，symptom disappearance time, and safety of the two groups were compared. Result:The total effective rate in the observation group was 95.00% (38/40), significantly higher than 75.00% (30/40) in the control group (χ²=4.804, P<0.05). After treatment, the symptoms were significantly improved in both groups (P<0.05), and the scores of dizziness, nausea and vomiting, tinnitus and deafness, tiredness and fatigue in the observation group were lower than those in the control group (P<0.05), the EEV and DHI-S scores were decreased significantly in both groups(P<0.05), and such scores in the observation group were significantly lower than those in the control group(P<0.05), the Vm of bilateral vertebral artery (VA) and basilar artery (BA) on both sides were significantly increased in both groups, while the PI was significantly reduced (P<0.05), and these two indicators in the observation group were better than those in the control group (P<0.05), the MAP, CVP, RAP and LAP were significantly reduced in both groups after treatment, while the CO and SV were increased after treatment(P<0.05), and the SV of the observation group was significantly higher than that of the control group(P<0.05). The high blood viscosity, low blood viscosity, plasma viscosity and TG, TC, LDL-C levels were decreased significantly while HDL-C increased significantly in both groups (P<0.05), and the blood viscosity and blood lipid levels in the observation group were significantly better than those in the control group(P<0.05). The time to disappearance of dizziness, nausea, vomiting, tinnitus and deafness, malaise, fatigue, and confused mind in observation group was less than that in the control group (P<0.05), no serious adverse events occurred in both groups. Conclusion:Tongnao pills for the treatment of senile posterior circulation ischemic vertigo (phlegm and blood stasis type) can significantly alleviate the symptoms of vertigo, improve hemorrheology, increase the blood flow velocity of the vertebrobasilar artery, improve the abnormal blood supply to the brain, and improve the quality of life for patients, with fewer adverse reactions, high safety, and good therapeutic effect. Therefore, it is worth to be applied in clinical use.