Objective To understand the ambient PM2.5 component and the toxicity to primary cultured myocardial cells of neonatal rats. Methods Primary myocardial cells cultures were prepared from 1-day-old Sprague-Dawley rats and treated with PM2.5 suspension and its organic and water-soluble extracts at various concentrations for 24 h. The cellular viability was measured with MTT methods, and the beat of myocardial cells was observed and counted under inverted microscope. Results PM2.5 suspension and its organic and water-soluble extracts increased the viability of myocardial cells at the concentrations below 10.0 ?g/ml, but above this, they could significantly decrease the viability of myocardial cells with a dose-dependent manner. The toxicity of organic extract of PM2.5 was significantly higher than that of water-soluble extract. PM2.5 suspension and its organic and water-soluble extracts also dose-dependently inhibited the beat frequencies of myocardial cells. Conclusion PM2.5 and its extracts show a hormesis effect on the cultured myocardial cells in the case of the cellular viability is taken as the response parameter. PM2.5 and its extracts can inhibit the beat of myocardial cells.

[Objective] Expound the correlation of the du meridian and du meridian acupuncture points with qi and blood deficiency type cervical vertigo. [Method] Introduce the author’s clinical experience through using the du meridian points treatment of cervical vertigo with qi and blood deficiency type, and take consilia as confirmation. [Result]After the du meridian acupoints treatment 10 times, vertigo symptom relieved obviously, reduced the neck and shoulder acid hemp sense, fol owed up for 3 months, there's no recurrence. [Conclusion]In the clinic, application of du meridian acupoints treatment of cervical vertigo with qi and blood deficiency type can obtain obvious curative effect.

OBJECTIVETo observe the effects of electroacupuncture (EA) on cochlea morphology and expression of aquaporin 1 (AQP1) in guinea pigs with endolymphatic hydrops, so as to explore the possible mechanism of EA on endolymphatic hydrops.

METHODSForty guinea pigs were randomly divided into a blank group, a model group, a medication group and an EA group, 10 guinea pigs in each one. Model of endolymphatic hydrops was established by using intraperitoneal injection of aldosterone. Guinea pigs in the blank group and model group were treated with identical immobilization as EA group but no treatment was given; guinea pigs in the medication group were treated with intragastric administration of hydrochlorothiazide at a dose of 5 mg/kg, once a day for consecutive 10 days; guinea pigs in the EA group were treated with' EA at "Baihui" (GV 20) and "Tinggong"(SI 19), once a day for consecutive 10 days. The serum ionic concentration in each group was tested by turbidimetric method; hematoxylin-eosin staining was used to measure the severity of cochlea hydrops; immunohistochemical method was used to observe the expression of AQP1 in the cochlea.

RESULTS(1) There was no endolymphatic hydrops in the blank group, moderate-severe endolymphatic hydrops in the model group and slight endolymphatic hydrops in the EA group and medication group. (2) The concentration of K+ and Ca2+ in the EA group was higher than that in the model group and medication group (all P<0. 01); the concentration of Na+ was lower than that in the model group (P< 0. 01) but higher than that in the medication group (P<0. 01); the concentration of Cl- was higher than that in the medication group (P<0. 01), but not significantly different from the model group (P>0. 05). (3) The ratio of expression area of AQP1 in the model group was lower than that in the blank group (P<0. 01); the ratio of expression area of AQP1 in the EA group was higher than that in the model group (P<0. 01), and lower than that in the medication group without significant difference (P>0. 05).

CONCLUSIONEA could relieve the endolymphatic hydrops in guinea pigs; the mechanism is likely to be related with up-regulating the expression of AQP1 in cochlea and ion concentration might be an important factor involved.

Animals ; Aquaporins ; genetics ; metabolism ; Cochlea ; anatomy & histology ; metabolism ; Disease Models, Animal ; Electroacupuncture ; Endolymphatic Hydrops ; genetics ; metabolism ; therapy ; Guinea Pigs ; Humans ; Male

Objective To observe the effect of over-expressed amyloid procursor protein(APP) gene on the cholinergic receptor binding and the ChAT activity in human neuroblastoma cell line SH-SY5Y.Methods SH-SY5Y cells were transfected with pCMV695 plasmid containing wild type human APP695 gene by Lipofectamine 2000 method.The expression of APP was detected by Western blot.A? contents were test by ELISA assay in over-expression SH-SY5Y cell clones(SH-SY5Y-APP).The special binding of muscarinic and nicotinic cholinergic receptors in those A?-overproducing cell clones was determined by radio-ligand binding method.The cholinergic acetyl transferase(ChAT) activity was assayed by radiao-immunoassay.Results No evident morphologic changes of cytotoxicity were detected after transfection.When A? production was 2～2.6 times as much as that of normal cells,muscarinic receptor binding was decreased from 18.5 % to 21.9 %(P

objective To evaluate the clinical effect of touqing capsule associated with Fengchi on the vertebral artery type of cervical spondylosis(CSA)in the attack stage.Methods A total of 100 patients with CSA, according to the doctor order, were randomly divided into a control group and a treatment group respectively, with 50 patients in each. The control group was treated with acupuncture therapy, the treatment group was additionally treated with Touqingcapsule on the basis of the control group, and both groups were treated for 20 days. The hemodynamics was detected by transcranial doppler, the change of TCM syndrome integral was observed before and after the treatment, and the clinical efficacy was evaluated.Results After treatment, the treatment group dizziness (1.10 ± 0.33 vs. 2.01 ± 0.26,t=14.909), neck shoulder ache (0.87 ± 0.16 vs. 1.92 ± 0.69,t=10.266), numbness (0.95 ± 0.14)vs. 1.87 ± 0.16,t=29.844), the total integral (2.16 ± 0.75 vs.3.89 ± 1.14,t=8.756) integral were significantly lower than the control group(P<0.01).Treatment group RVA (40.03 ± 5.89 cm/svs. 34.26 ± 6.26 cm/s,t=4.628), the LVA (42.14 ± 5.42 cm/svs.33.89 ± 6.08 cm/s,t=6.985) rise and PI (0.79 ± 0.14 vs.1.04 ± 0.19,t=7.312) reduction were significantly better than those of the control group (P<0.01). The total effective rate in the treatment group was significantly better than the control group (91.7%(44/48)vs. 74.5%(35/47),χ2=3.863, P=3.863).Conclusion Touqing Capsule associated with Fengchi is effective for CSA. Its functional mechanism is correlated with improvement of haemodynamics of vertebral-basilar artery of the CSA patients.

OBJECTIVETo assess the effects of minimal invasive surgery through an incision near the rectus abdominis muscle for treatment of pelvic fractures sustained in earthquake.

METHODSNine patients with pelvic fractures during Ludian earthquake (August 3, 2014) were treated with minimal invasive surgery through an incision near the rectus abdominis muscle followed by anterior ring fixation and reconstruction plate or posterior ring fixation with percutaneous sacroiliac lag screws. The operative time, incision length, blood loss volume, and pre- and postoperative pain levels were recorded. The surgical complications such as lateral femoral cutaneous nerve injury and hip adduction incapability were observed.

RESULTSThe minimal invasive surgery achieved satisfactory clinical effects and allowed convenient operation with better surgical exposure, shorter operative time, less blood loss and pain. The patients showed excellent fracture reduction and stable internal fixation without lateral femoral cutaneous nerve injury or hip adduction incapability.

CONCLUSIONSThe minimal invasive surgery through an incision near the rectus abdominis muscle is suitable for treatment of pelvic fractures with anteriorly interior fixation, especially in rescuing victims in the event of an earthquake where blood supply can be very limited.

Blood Loss, Surgical ; Bone Plates ; Disasters ; Earthquakes ; Fracture Fixation, Internal ; Fractures, Bone ; surgery ; Humans ; Minimally Invasive Surgical Procedures ; Pain, Postoperative ; Pelvic Bones ; pathology ; Reconstructive Surgical Procedures ; Rectus Abdominis ; surgery

According to the requirement of the national assessment for achieving the infection control criteria, 42 villages (among them,25 villages belonged to the first stratum, and 17 villages belonged to the second stratum) in 14 counties from 5 provinces, including Hunnan, Hubei, Jiangxi, Anhui and Yunnan, were selected as sampling villages for the assessment.The results from the field assessment showed that 154 out of 9 067 people were found infected with Sckistosoma japonicum, with an average infection rate of 1.7% ranged from 0.31 % to 4.10% , and only Yongping Village from Weishan County and Tenglong Village from Eryuan County were not found any case. A total of 46 out of 3 323 head of cattle were infected with S. japonicum, with an average infection rate of 1.38% ranged from 0.26% to 3.79% , and no any infected individual detected in Nanling County. No outbreak occurred in those sampling villages. Therefore, it is indicated that the five sampling provinces have reached the national criteria on infection control of schistosomiasis.

Objective To investigate the feasibility of constructing the risk index of Echinococcus infection based on the classification of echinococcosis lesions, so as to provide insights into the management of echinococcosis. Methods The imaging data of echinococcosis cases were collected from epidemiological surveys of echinococcosis in China from 2012 to 2016, and the detection of incident echinococcosis cases was captured from the annual echinococcosis prevention and control reports across provinces (autonomous regions) and Xinjiang Production and Construction Corps in China from 2017 to 2022. After echinococcosis lesions were classified, a risk index of Echinococcus infection was constructed based on the principle of discrete distribution marginal probability and multi-group classification data tests. The correlation between the risk index of Echinococcus infection and the detection of incident echinococcosis cases was evaluated in the provinces (autonomous regions and corps) from 2017 to 2022, and the correlations between the short and medium-term risk indices and between the medium and long-term risk indices of Echinococcus infection were examined using a univariate linear regression model. Results A total of 4 014 echinococcosis cases in China from 2012 to 2016 were included in this study. The short-, medium- and long-term risk indices of E. granulosus infection varied in echinococcosis-endemic provinces (autonomous regions and corps) of China (χ² = 4.12 to 708.65, all P values < 0.05), with high short- (0.058), medium- (0.137) and long-term risk indices (0.104) in Tibet Autonomous Region, and the short-, medium- and long-term risk indices of E. multilocularis infection varied in echinococcosis-endemic provinces (autonomous regions and corps) of China (χ² = 6.74 to 122.60, all P values < 0.05), with a high short-term risk index in Sichuan Province (0.016) and high medium- (0.009) and long-term risk indices in Qinghai Province (0.018). There were no significant correlations between the risk index of E. granulosus infection and the detection of incident cystic echinococcosis cases during the study period (t = −0.518 to 2.265, all P values > 0.05), and strong correlations were found between the risk indices of E. multilocularis infection and the detection of incident alveolar echinococcosis cases (including mixed type) in 2018, 2020, 2021, 2022, during the period from 2017 through 2020, from 2017 through 2021, from 2017 through 2022 (all r values > 0.7, t = 2.521 to 3.692, all P values < 0.05). Linear regression models were established between the risk index of E. multilocular infection and the detection of alveolar echinococcosis cases (including mixed type), and the models were all statistically significant (b = 0.214 to 2.168, t = 2.458 to 3.692, F = 6.044 to 13.629, all P values < 0.05). The regression coefficients for the correlations between the medium- and short-term, and between the long- and medium-term risk indices of E. granulosus infection were 2.339 and 0.765, and the regression coefficients for the correlations between the medium- and short-term, and between the long- and medium-term risk indices of E. multilocular infection were 0.280 and 1.842, with statistical significance seen in both the regression coefficients and regression models (t = 16.479 to 197.304, F = 271.570 to 38 928.860, all P values < 0.05). Conclusions The risk index of Echinococcus infection has been successfully established based on the classification of echinococcosis lesions, which may provide insights into the prevention and control, prediction, diagnosis and treatment, and classified management of echinococcosis.