The manifestation of clinical symptoms of cerebral small-vessel disease (SVD) is cognitive disorders. Its pathological changes are manifested as leukoaraiosis and/or lacunar infarction. However, it is not clear whether cognitive disorders caused by SVD is correlated with the severity of white matter damage. Magnetic resonance spectroscopy analysis can noninvasively detect metabolite concentrations of brain tissue in vivo and directly reflect cerebral metabolism; Diffusion-tensor imaging is a novel noninvasive technique for specific observation of white matter through different parameters such as mean diffusivity and anisotropy for quantitative evaluation of the abnormalities of fine structure of white matter. The combination of magnetic resonance spectroscopy analysis and diffusion-tensor imaging may more sensitively reveal the severity of white matter damage, and provide a research tool for cognitive disorders caused by SVD.resonance imaging

Clopidogrel is an essential drug for the treatment of ischemic stroke.It has been recommended by the multinational stroke treatment guidelines and has been widely used in clinical practice.Many patients with ischemic stroke may still have stroke recurrence after the standard treatment of clopidogrel; therefore,we must pay attention to the phenomenon of clopidogrel resistance.This article reviews the biochemical mechanisms,gene polymorphism,laboratory testing,and response measures of clopidogrel resistance.

Objective: To observe the postoperative skeletal changes of mandibular setback via bilateral sagittal ramus split osteotomy (BSSRO) with circummandibular wiring and maxillomandibular fixation. Methods: BSSRO was performed in 14 cases to setback the mandible. The patients were followed up for 6 months by clinical observation and examined with lateral cephalometric radiographs and Schuller's position radiographs before and after surgery. Results: According to the measured parameters the ralapse extent was 27.2%. Multiple regression analysis showed the magnitude of the setback significantly accounted for relapse (P

AIM: To observe the effects of Huzhang Decoction(HZD)(Rhizoma Polyqonicuspidati,Radix Sanguisorbae,Herba Saururi,Rhizoma curcumae,etc) on tumor necrosis factor ?(TNF-?)and apoptosis in liver injury induced by CCl_4 in rats. METHODS: Wistar rats were treated with HZD(1.0g/kg or 2.0g/kg) after 3days by administration of CCl_4(1 ml/kg,po).The levels of TNF-? in serum were measured by enzyme-linked immunosorbent assay(ELISA).The apoptosis cells in liver tissue were tested by TdT-mediated digoxin-dUTP nick end labeling(TUNEL),and the positive expression of bcl-2 or bax by strept avidin-biotin complex(SABC). RESULTS: After being treated by HZD the serum level of TNF-? and apoptosis index was decreased obviously in rat with liver injury induced by CCl_4,and the ratio of bcl-2/bax was increased markedly(compared with liver injury group,P

Objective To investigate the relationship between Helicobacter pylori (H. pylori) infection and concentration of reactive oxygen species (ROS) in AGS cells. Methods AGS cells were cultured with either Hp11638 (CagA~+ , VacA~+ ) extract or Hp11638 mutant (CagA~+ , VacA~-) extract for 48 hours, then the cells and supernatants were collected. The concentration of ROS in AGS cells was measured by flow cytometry. The eytochrome C reduction was detected by spectrophotometer at 550 nm. Results The ROS levels in the AGS cells were correlated with two H. pylori strains in a concentration- and time-dependent manner. The ROS levels in AGS cells treated with Hp11638 extract in different concentrations or times were correspondingly higher than those treated with Hp11638 mutant extract. Similar results were found in examination of cytochrome C reduction. Conclusion The elevation of ROS in AGS cells is related to effects of H. pylori proteins, and the VaeA protein involves in the process.

Objective To investigate the variation law of apparent diffusion coefficient (ADC) and fractional anisotropy (FA) values in patients with cerebral infarction, and to explore the relationship between the changes and the prognosis of cerebral infarct patients. Methods Sixteen patients with cerebral infarction were recruited and divided into 2 groups:good recovery and poor rehabilitation. ADC and FA values were calculated in infarct areas and control areas which were the regions with symmetrical position and the same area as infarct areas. The difference of ADC and FA values in patients at acute and earlier chronic stage between the two areas were analyzed. Results ①At acute stage, ADC values in infarct areas were lower than those in control areas (P<0.05). At early chronic stage, there was no significant difference of ADC values between infarct areas and control areas (P>0.05), moreover ADC values were higher than that at acute phase (P<0.05). ②FA values in infarct areas were lower than those in control areas at both acute and early chronic stage (P<0.05). At early chronic stage, FA values were lower than those at acute stage (P<0.05). ③There was no significant difference of ADC and FA values at both acute and early chronic stage between good recovery group compared with poor rehabilitation group (P>0.05). Conclusion There are certainly rules in changes of ADC and FA values in patients with cerebral infarction at acute and earlier chronic stage.

Objective To develop a spatio-temporal model of mountainous Oncomelania hupensis snails based on the Bayes-ian model,and to analyze and identify the spatio-temporal pattern at a village scale. Methods The data including the intensity and spatial distribution of live and infected snails from 2000 to 2006 and the village boundary were collected. The independent and interactive spatio-temporal models were established,and then the best fitness model was selected to analyze the spatio-temporal pattern of live and infected snails. Results The interactive model of live snails and the independent model of infected snails were relative fitness models,and the models showed 95%CI(confidence interval)of the spatial and temporal coefficient included ze-ro,and indicated that the spatial and temporal correlation of live and infected snails was not significant at a village scale. Conclu-sion There is no significant spatial and temporal correlation of live and infected mountainous snails at a village scale,and the fur-thermore study should be carried out at a small scale.

Chronic kidney disease (CKD) is becoming a global social problem. It is important to slow down the progression of CKD for economic and social concerns. In recent years, it has been found that colon is one of the vital organs which produce uremic toxins. And enterogenous uremic toxins are closely related to the prognosis of CKD. Theory of gut-kidney axis for the slowdown of CKD progression was raised by foreign scholars and became the research hot spot. Colon therapy with traditional Chinese medicine (TCM) has been widely used in clinical practice and is believed to slow down the progression of CKD by numerous clinical reports. However, low re-search quality and ambiguous results limited its further application. Under the guidance of senior TCM Professor Huang Chunlin, who emphasized the method of draining turbidity through bowels in the management of CKD, from the Nephrology Center, Guangdong Provincial Hospital of Chinese Medicine, as well as the modern theory of gut-kidney axis, we had carried out a series of exploratory researches which will provide data and methodology support for further confirmatory studies and improve its effectiveness.

Objective: To explore the clinical efficacy of spine subtle adjusting manipulation for postpartum low back pain (PLBP). Methods: A total of 76 patients with PLBP were randomized into a control group and a treatment group, with 38 cases in each group. The control group was treated with core muscle strengthening exercises, and the treatment group was treated with spine subtle adjusting manipulation. After 3 weeks of treatment, the clinical efficacy was observed, and the visual analog scale (VAS) score and Oswestry disability index (ODI), and the changes of lumbar Cobb angle and pelvic rotation were compared between the two groups. Results: The total effective rate of the treatment group was 92.1％, and that of the control group was 78.9％. The difference between the two groups was statistically significant (P<0.05). After treatment, the VAS score and ODI in both groups decreased, and the intra-group differences were all statistically significant (P<0.05). There were no intra-group statistical differences in the lumbar Cobb angle or pelvic rotation in the two groups (P>0.05). After treatment, there were no statistical differences in the lumbar Cobb angle or pelvic rotation between the two groups (P>0.05); the VAS score and ODI in the treatment group were significantly lower than those in the control group (P<0.05). Conclusion: Spine subtle adjusting manipulation can effectively relieve the pain for patients with PLBP, and improve their daily activity function.

OBJECTIVETo analyze the clinical data of adult patients with total burn surface area (TBSA) greater than 50% in Guangzhou and explore the optimal fluid resuscitation protocols for these patients.

METHODSThe clinical data of 94 adult patients with a TBSA over 50% treated in our center during 1991-2010 were reviewed. and the former decade. Fluid resuscitation volume of various components in shock stage, urine volume, occurrence of visceral complications and mortality rate within 10 days after injury were compared between patients treated in 1991-1999 and those in 2000-2010.

RESULTSThe first 24-h crystalline colloidal fluid ratio, first 24-h infusion volume and the second 24-h crystalloid fluid coefficients were significantly greater in the patients treated in 2000-2010 than in those treated in 1991-1999. The visceral complications and mortality rate were significantly lower in the latter than in the former patients (7.69% vs 27.3% and 2.56% vs 18.18%, respectively, P<0.05).

CONCLUSIONFor patients with extensive burns, an individualized fluid resuscitation regimen, an adequately high colloid/crystal rehydration ratio, and a greater total infusion volume according to the local climate of Guangzhou can be beneficial to reduce the incidence of visceral complications and the mortality rate.

Adult ; Burns ; therapy ; Female ; Fluid Therapy ; methods ; Humans ; Male ; Resuscitation ; methods ; Retrospective Studies ; Treatment Outcome ; Young Adult