Objective:To investigate the effect of low-dose ketamine on neuroinflammation and microcirculation in mice with traumatic brain injury (TBI).Methods:Sixty adult male C57BL/6 mice, weighing 22-28 g, were randomly divided into sham-operated group, TBI group, Sham+ketamine group, and TBI+ketamine group ( n=15). A controlled cortical impingement (CCI) method was used to establish TBI models in the later 2 groups. Sham+ketamine group and TBI+ketamine group were intraperitoneally injected with 30 mg/kg ketamine once daily for 3 d at 30 min after TBI; sham-operated group and TBI group were intraperitoneally injected same amount of saline at the same time points. Cerebral cortical blood flow in 6 mice from each group was measured by laser speckle contrast imaging (LSCI) before, immediately after, 30 min after, 1 d after and 3 d after modeling, respectively. Three d after modeling, immunohistochemical staining and immunofluorescent double label staining were used to detect the nuclear translocation of microglia markers, ionized calcin-antibody-1 (Iba-1) and nuclear factor (NF)-κB p65 in damaged cortical brain tissues in 6 mice from each group. The remaining 3 mice in each group were sacrificed and tissue plasma was extracted 3 d after modeling; levels of NF-κB p65, phosphorylated (p)-NF-κB p65, p-IκB and inducible nitric oxide synthase (iNOS) in cortical brain tissues were detected by Western blotting. Expressions of tumor necrosis factor-α (TNF-α), interleukin-1-β (IL-1β) and interleukin-6 (IL-6), iNOS, reactive oxygen species (ROS) and reactive nitrogen species (RNS) in cortical brain tissues were detected by ELISA. Results:LSCI indicated that, 3 d after modeling, relative blood flow in local cerebral microcirculation of TBI+ketamine group was significantly increased compared with that of TBI group ( P<0.05). Immunohistochemical staining indicated that compared with the sham-operated group and Sham+ketamine group, the TBI group and TBI+ketamine group had significantly increased number of Iba-1 positive cells in the cerebral cortex ( P<0.05); compared with the TBI group, the TBI+ketamine group had significantly decreased number of Iba-1 positive cells ( P<0.05). ELISA indicated that compared with the sham-operated group and Sham+ketamine group, the TBI group and TBI+ketamine group had significantly increased expressions of TNF-α, IL-1β, IL-6, iNOS, ROS and RNS in damaged cortical brain tissues ( P<0.05); compared with the TBI group, the TBI+ ketamine group had significantly decreased expressions of TNF-α, IL-1β, IL-6, iNOS, ROS and RNS in damaged cortical brain tissues ( P<0.05). Immunofluorescent double label staining indicated obviously inhibited NF-κB p65 nuclear translocation in TBI+ketamine group when it was compared with TBI group. Western blotting indicated that compared with the sham-operated group and Sham+ketamine group, the TBI+ketamine group had significantly increased iNOS, NF-κB p65, p-NF-κB p65 and P-IκB protein expressions in damaged cortical brain tissues ( P<0.05); compared with the TBI group, the TBI+ketamine group had significantly decreased protein expressions of iNOS, NF-κB p65, p-NF-κB p65 and p-IκB in damaged cortical brain tissues ( P<0.05). Conclusion:Low-dose ketamine reduces neuroinflammation and improves cerebral microcirculatory blood flow after open TBI, whose mechanism may be related to inhibition of microglia NF-κB/iNOS pathway.

With the rapid development of modern economy, road traffic has become increasingly busy, and the accompanying environmental pollution problem is becoming increasingly prominent. Air pollutants emitted from automobile exhaust, including particulate matters, NO_x, CO, and hydrocarbons (PAHs), can cause high risk of cardiovascular disease and premature death. This article summarizes the related epidemiological research progress on this topic from published literatures in recent years. We reviewed acute and chronic health damage to the cardiovascular system caused by traffic related air pollutants, including changes in heart rate variability and blood system indicators, potential association with coronary arteriosclerosis, coronary heart disease, and death of cardiovascular disease. The results show that traffic-related air pollutants can cause decrease in heart rate variability, increased blood pressure and changes in blood indicators, increase acute mortality from cardiovascular diseases. Long-term exposure to traffic-related air pollutants can induce increased risk of coronary atherosclerosis and coronary heart disease, and lead to increased mortality from cardiovascular diseases. In the future, more attention should be paid to traffic-related air pollution, and more researches are recommended to comprehensively evaluate the relationship between traffic-related air pollution and cardiovascular health damages, especially in early-stage. At the same time, active researches on the mechanism of cardiovascular toxicity of traffic-related air pollutants are needed, so as to promote the early prevention of cardiovascular diseases.

Tumor radiotherapy is established on the basis of clinical oncology, radio-physics and radiobiology, and has become one of the three major therapeutic methods for malignant tumors. With the pace of socialist construction in China, the subject of radiotherapy in Shanxi province has developed from scratch and from small to large for more than 60 years. Remarkable achievements have been made in the establishment of departments, the updating of technical equipment, the increase of employees and clinical scientific research. This article reviews and summarizes the development history of tumor radiotherapy in Shanxi province.

Objective: To evaluate the effects of sevoflurane on microglial polarization after traumatic brain injury (TBI) in rats. Methods: Seventy-two healthy adult male Sprague-Dawley rats, weighing 230-250 g, were divided into 3 groups (n=24 each) using a random number table method: sham operation group (group Sham), group TBI, and TBI plus sevoflurane anesthesia group (group TBI+ Sevo). TBI models were established by using Feeney′s method in TBI and TBI+ Sevo groups, 30 min later 2.4% sevoflurane was inhaled for 1 h once a day for 3 consecutive days in TBI+ Sevo group, while pure oxygen was inhaled instead in Sham and TBI groups.At 1, 3, 7 and 14 days after establishing the model, 6 rats were selected, the neurological function was evaluated with the modified neurologic severity score (mNSS), and tail venous blood samples were taken for determination of tumor necrosis factor-a (TNF-α), interleukin-1beta (IL-1β) and IL-6 concentrations by enzyme-linked immunosorbent assay.The rats were then sacrificed, the limbic cortical tissues of brain contusion lesion were taken for determination of cell apoptosis (by TUNEL) and expression of microglial marker Iba-1, microglial M1 phenotypic marker CD86 and microglial M2 phenotypic marker CD206 (by Western blot). Results: Compared with group Sham, the mNSS score, apoptosis rate of cortical cells, expression of Iba-1, CD86 and CD206, and concentrations of serum TNF-α, IL-1β and IL-6 were significantly increased in TBI and TBI+ Sevo groups (P<0.05). Compared with TBI group, the mNSS score, apoptosis rate of cortical cells, expression of Iba-1 and CD86 and concentrations of serum TNF-α, IL-1β and IL-6 were significantly decreased, and the expression of CD206 was up-regulated in TBI+ Sevo group (P<0.05). Conclusion The mechanism by which sevoflurane anesthesia reduces TBI may be related to promoting microglial polarization and inhibiting systemic inflammatory response in rats.

Objective To investigate the clinical manifestations and diagnosis of patients with abnormal signal of bilateral pontine brachium on magnetic resonance imaging (MRI),in order to improve the understanding of diseases involving bilateral middle cerebellar peduncles.Methods Combined with auxiliary examination,we compared the clinical manifestations of five patients and analyzed the characteristics of diseases involving bilateral middle cerebellar peduncles.Results MRI was similar in all five patients.Symmetrical T2-weighted,FLAIR-weighted images of bilateral middle cerebellar peduncles were seen on MRI,with corresponding hypointensity on T1 WI of all five patients.No obvious enhancement has been showed.But there were different clinical manifestations and diagnosis of them.The first patient manifested as dizziness,visual rotation,slurred speech and inactivity of right limb.She was diagnosed with acute cerebral infarction.The second patient only manifested as dizziness.Combined with the history of cerebral infarction,he was diagnosed as Wallerian degeneration.The third patient manifested as blindness in the left eye,vision blurred in right eye and numbness of limbs.She was diagnosed with neuromyelitis optica.The forth patient manifested as lisp,walking instability,talk rubbish and hyperspaamia.She took heroin for dozens of times,and was diagnosed with heroin encephalopathy finally.The final patient manifested as ataxia,slurred speech,choking,dysphagia,less facial expression and urinary retention.He was diagnosed with olivopontocerebellar atrophy.Conclusions The etiology of bilateral pontine brachium lesion is complex.Cerebrovascular diseases,demyelinating diseases,infectious and toxic diseases,and neurodegenerative diseases can be involved.The mechanism of bilateral pontine brachium lesions is not very clear and needs to be further explored.

In order to further promote the development of the TCM industry, promote and encourage social capital to organize TCM institutions, according to the national policy and system regulations on private TCM institutions, this article analyzed and studied policies factors affecting private Chinese medical institutions, concluded the advantaging policies for the development of private TCM institutions, teased out the unreasonable regulations to hinder and restrict the private TCM institutions, and finally proposed relevant suggestions and advice, with a purpose to promote the attention of government in the process of promoting private TCM institutions policy.

Objective To compare the clinical effects of high flow nasal cannula (HFNC) and non-rebreathing oxygen face mask (NRB) in post-extubation patients.Methods 88 critically ill patients with machinery ventilations were divided into HFNC group and NRB group randomly.Blood gas analysis and hemodynamic parameters were assessed 1 hour prior to extubation and 6 hours after extubation.The primary clinical outcomes measured were ventilation-free days,re-intubation patient numbers,length of stay in ICU (Intensive Care Unite),total duration of hospitalization and mortality.The scant of breath degree and comfortableness of patient were recorded according to the Visual analogue scale.The measurement data were described by mean ± standard deviation ((x) ± s) and analyzed with t test,enumeration data were described by number of cases and composition ratio and analyzed with X2test,P ＜ 0.05 was considered to have statistical difference.Results There was no significant difference in clinical features between the two groups,The oxygenation index of HFNC group is significantly higher than that of NRB group after extubation [(251.4 ±43.9) vs.(201.7 ±60.7),P =0.037)].There were more ventilator-free days in the HFNC group than NRB group [(4.2 ± 2.1) vs.(3.4 ± 2.8),P =0.037)] and fewer patients required reintubation (P =0.028).The rate of ventilator associated pneumonia is also lower than NRB group (P =0.024).The patients' scant of breath feeling were obviously allevated comparing with the NRB group [(2.9 ± 1.1) vs.(3.7 ± 1.8),P =0.042)].The oxygenation index of NRB group significantly decreased after extubation [(242.9 ±68.4vs.201.7 ±60.7 P =0.048)].The two groups demonstrated similar hemodynamic patterns before and after extubation.And there were no statistically significant clinical differences in PaCO2,length of ICU stay,total duration of hospitalization or mortality.Conclusions Compared with NRB,HFNC is a more safe and effective clinical tool in the prevention and treatment of critical adult patients with extubation failure.

Objective To observe the clinical effect of tongluozhitong capsule combined with carbamazepine on the treatment of trigeminal neuralgia.Methods94 patients with trigeminal neuralgia from January 2012 to May 2014 in Dongyang people's hospital were randomized double-blindly divided into the control group and the observation group, 47 cases in each group.The control group received carbamazepine treatment, and the observation group received tongluozhitong capsule combined with carbamazepine.VAS score, the effect and adverse reaction were recorded and analyzed before treatment, atwo weeks and four weeks after.Recurrence was followed-up a half and one year after treatment.Results①VAS scores in the observation group 2 weeks and 4 weeks after treatment were (3.78±0.44), (2.01±0.23) points separately, which were lower than those in the control group (5.96±0.53), (4.02±0.38) points separately, and the differences were statistically significant (P<0.05).②The total effective rate in the observation group 4 weeks after treatment was 95.74%, which significantly higher than that in the control group 78.72%, and the difference was statistically significant (P<0.05).③ The adverse reactions in the observation group 4 weeks after treatment was 21.28%, 27.66% in the control group, the difference was not significant;④ The recurrence rate in the observation group six months and one year after treatment were 6.38% and 10.64%, which significantly lower than those in the control group 23.40% and 29.79%, and the differences were statistically significant (P<0.05).ConclusionIt can effectively relieve pain, reduce the recurrence rate, and will not increase the adverse reactions which tongluozhitong capsule combined with carbamazepine were used on the treatment of trigeminal neuralgia.It is a safe and effective treatment program.

Objective To explore the mechanism that Staphylococcus aureus(S.aureus) α-toxin(Hla) regulate miR-142 expression and inhibit macrophage phagocytosis.Methods BALB/C mice and RAW264.7 cells were infected with wild type S.aureus(WT S.aureus),Hla deletion S.aureus(△HlaS.aureus) or phosphate buffered saline(PBS),and the expression level of miR-142 of skin tissues and cells were detected.miR-142 mimics and inhibitor were then applied in the RAW264.7 culture to examine the effect on phagocytosis.Direct targeting of miR-142 on protein kinase Cα(PKCα) was assessed by luciferase assay and western blotting.Results miR-142 expression in △HlaS.aureus group were significantly down-regulated than WT S.aureus group(P<0.05).MiR-142 mimics inhibited RAW264.7 phagocytosis ability and inhibitor enhanced RAW264.7 phagocytosis ability.PKCα was directly targeted by miR-142.MiR-142 mimics significantly decreased the mRNA expression levels of PKCα in RAW264.7 cells(P<0.05).Conclusion Hla could promote miR-142 expression in macrophages.MiR-142 could inhibit macrophage phagocytosis through down-regulated PKCα.

Objective To evaluate the diagnostic and therapeutic value and safety of transcatheter arterial angiography and embolization in patients with endoscopic refractory gastrointestinal bleeding.Methods Thirty-one cases of endoscopic refractory gastrointestinal bleeding were performed DSA and treated with transcatheter arterial angiography and embolization.The safty and efficacy was evaluated.Results Angiographic positive rate of bleeding was 80.65％ (25/31);28 cases was treated with embolization.The success rate of first embolization was 75.00％ (21/28),and the total success rate was 82.14 ％ (23/28) by the second embolization.Seven patients received surgical resection after interventional therapy,including 2 cases of jejunal stromal tumors and 5 cases of gastric malignant tumors.Four cases of gastric cancer patients underwent rebleeding within 30 days after interventional therapy,of which 2 died of heart or lung function failure due to basic diseases.Except for 1 patient of anastomotic bleeding after gastrointestinal anastomosis occurred anastomotic fistula after embolization,who recovery with the support treatment,no other cases occurred serious gastrointestinal ischemic necrosis.Conclusion Interventional diagnosis and treatment for gastrointestinal bleeding hemostasis is effective and safety,and also can achieve good results especially for malignant gastric tumor hemorrhage,which can be used for endoscopic refractory gastrointestinal bleeding patients.