To explore the molecular pathological mechanism of severe brain injury, the brain diffuse axon injury (DAI) model and Mamarou free drop model were produced in rats. Sagittal sections of the brain were processed by immunohistochemical ABC method using the mouse serum against NF68 subunit and HSP70. The medulla oblongata was observed under the microscope and electron microscope. Left parietal lobe of the free drop model was examined with HE and HSP70 immunohistochemistry. At 30 min post injury, the axons in medulla oblongata were seen to be crooked, swollen,and deranged. The myelin sheath became slightly separated, and the NFs in axoplasma were abnormal . At 2~24 h post injury,obvious axonal swelling, disconnection and formation of axonal retraction balls were seen. Obvious separation of myelin sheaths, local disconnection, vacuolization,peripheral aggregation of mitochondria and partial dissolution of axoplasma were seen. The NF68 positive axons increased gradually in staining intensity. HSP 70 positive cells of the two groups were detected at 3h after brain injury, reached the peak at 24h, and decreased at 72h. The HSP expression of the two groups were in accord. The research indicated that DAI could lead to a derangement in structure of NFs. Ischemia and anoxia may aggravate the brain injury.

Objective To discuss the function and advantages of ultrasound technology in various factors in the diagnosis of vertebral artery stenosis lesions.Methods The objective data of ultrasonography were selected in 60 patients (120 vertebral arteries) with paroxysmal,reversible vertigo and headache as the chief complaint,the internal relations were summarized and analyzed.Results In the subjects of study,the vertebral artery stenosis for 38.2％,vertebral artery course tortuosity changer accounted for 33.3％,congenital abnormal development accounted for 9.8％,mixed cause 18.6％,dominant etiology was vertebral artery sclerosis and vertebral artery tortuosity change.Conclusion Ultrasound technology has important value of clinical application in the reasons diagnosis of vertebral artery stenosis disease,it can help extend clinical diagnosis.

Objective To explore the effects of cognitive rehabilitation on aphasia for the patients with severe traumatic brain injury. Methods 40 patients with traumatic brain injury following aphasia were randomly divided into simple language group (n=20) and language- cognition group (n=20). Both groups received conventional therapy and language therapy, and the language-cognition group received cognitive rehabilitation additionally, 30 minutes 1 day for 1 month. Results The index of Chinese Rehabilitation Research Center Aphasia Examination (CRRCAE) improved significantly after treatment in both groups (P<0.01). There were significant differences in all the indexes of CRRCAE (P<0.05) between 2 groups after treatment except dictation (P>0.05). Auditory comprehension correlated with orientation, visual perception, spatial perception, motor praxis, visuomotor organization and thinking operations. Conclusion Cognitive rehabilitation can improve the language function of traumatic brain injury patients with aphasia.

Aim To study the antitumor and immunological regulation effects of ardipusilloside-Ⅰ(ADS-Ⅰ) on tumor-bearing mice of S180, H22, EAC and L1210. Methods The tumor-bearing mouse model was made through injecting cancer cells in the right limb oxter(or in abdominal cavity), and the mice were administrated orally with ADS-Ⅰfor 8 days. Then we detached the tumor and counted the inhibition rate of tumor growth. Incorporation of ()~3H-TdR was used to assess the proliferation of T spleen lymphocyte cells; phagocytosis of abdominal cavity macrophage was measured with the method of chicken red blood cells. Results ADS-Ⅰ was proved to be effective on the tumor-bearing mice of S180, H22 and EAC, and the maximal inhibition rate of the dose of 100 mg?kg~(-1) was 38.7%, 48.6% and 50.0%, respectively;ADS-Ⅰ promoted the proliferation of T spleen lymphocyte cells,and strengthened the phagocytosis of macrophage in the tumor-bearing mice significantly. Conclusion ADS-Ⅰ can inhibit the growth of transplanted tumor,and improve the immunological function of tumor-bearing mice.

Aim To explore the change of mGluR1α and mGluR5 expression in brain CA1 region after infrasonic action, and the role of antagonist MCPG in rats. Methods 160 SD rats were divided randomly into infrasonic damage group and MCPG therapy group. The two groups were subdivided into control group and 1-time, 7-time and 14-time groups respectively. Rats were exposed to 8Hz, 130dB infrasound two hours each time. Expression of mGluR1α and mGluR5 were detected by immunohistochemical staining and in situ hybridization methods. The morphological changes of neurons after MCPG therapy were observed under microscopes. Results Comparing with the control group, the number and the A value of mGluR1α and mGluR5 positive cells changed after one infrasonic action(P∨ 0.05); and the expression of mGluR1α and mGluR5 in the 7-time group were most obvious(P∨ 0.01); in the 14-time group, they recovered already to normal level. Morphological study confirmed that MCPG protected neurons from infrasonic damage. Conclusion Change of mGluR1α and mGluR5 activity can mediate exciting neurotoxicity after infrasonic action, and it is one of the major factors relative to neurons injury, MCPG had an protective effect on brain damage caused by infrasound.

Objective:To investigate the clinicopathological features of gastric adenocarcinoma of fundic gland type (GA-FG).Methods:A total of 12 patients, including 7 cases treated with endoscopic submucosal dissection (ESD), were diagnosed as having GA-FG in Nanjing Drum Tower Hospital from January 2018 to August 2019. Morphological changes were analyzed by reviewing endoscopic and pathological results. Patients were followed up after definitive diagnosis.Results:The clinical symptoms of patients with GA-FG were nonspecific. No Helicobacter pylori infection was identified. The lesions were found in the non-atrophic gastric mucosa of the upper 1/3 portion in 10 cases and middle 1/3 portion in 2 cases. Endoscopically, the most common features were whitish color (9 cases), and all lesions diameter≤1 cm. Their macroscopic types were classified as 0-Ⅰ (2 cases), 0-Ⅱa (9 cases) and 0-Ⅱc (1 case) respectively. All lesions had sharp boundary, with branching dilated blood vessels on the surface. Five in 7 cases who were treated with ESD showed submucosal invasion. Immunohistochemically, 9 cases were classified as the chief cell type , 3 as the mixed type, 11 MUC6 positive, 4 MUC5AC positive, 2 MUC2 positive, and 3 CD10 positive. P53 was detected in all 12 cases, and 9 cases had low Ki-67 staining index (<10%). The mean time of follow-up was 11 months, and 11 patients survived. Conclusion:GA-FG should be taken into consideration when the polyps are found in the upper part of the stomach, with whitish color, and branch dilated blood vessels on the surface. Excellent clinical outcomes can be achieved for GA-FG patients with ESD.

PURPOSE: Methylenetetrahydrofolate reductase (MTHFR) has been implicated in lung cancer risk and response to platinum-based chemotherapy in advanced non-small cell lung cancer (NSCLC). However, the results are controversial. We performed meta-analysis to investigate the effect of MTHFR C677T polymorphism on lung cancer risk and response to platinum-based chemotherapy in advanced NSCLC. MATERIALS AND METHODS: The databases of PubMed, Ovid, Wanfang and Chinese Biomedicine were searched for eligible studies. Nineteen studies on MTHFR C677T polymorphism and lung cancer risk and three articles on C677T polymorphism and response to platinum-based chemotherapy in advanced NSCLC, were identified. RESULTS: The results indicated that the allelic contrast, homozygous contrast and recessive model of the MTHFR C677T polymorphism were associated significantly with increased lung cancer risk. In the subgroup analysis, the C677T polymorphism was significantly correlated with an increased risk of NSCLC, with the exception of the recessive model. The dominant model and the variant T allele showed a significant association with lung cancer susceptibility of ever smokers. Male TT homozygote carriers had a higher susceptibility, but the allelic contrast and homozygote model had a protective effect in females. No relationship was observed for SCLC in any comparison model. In addition, MTHFR 677TT homozygote carriers had a better response to platinum-based chemotherapy in advanced NSCLC in the recessive model. CONCLUSION: The MTHFR C677T polymorphism might be a genetic marker for lung cancer risk or response to platinum-based chemotherapy in advanced NSCLC. However, our results require further verification.
Carcinoma, Non-Small-Cell Lung/*drug therapy/enzymology/genetics ; Genetic Predisposition to Disease ; Humans ; Lung Neoplasms/drug therapy/*enzymology/*genetics ; Methylenetetrahydrofolate Reductase (NADPH2)/*genetics ; Platinum/*therapeutic use ; Polymorphism, Genetic/genetics

Objective To investigate the prevalence of chronic kidney disease (CKD) and associated factors in Changsha county of Hunan province. Methods Using a stratified, multistage sampling, 1950 residents (older than 20 years old) from 3 towns of Changsha county were randomly selected to be interviewed and tested for the kidney damage indicators and the associated factors with CKD. Results Eligible data of 1727 subjects were enrolled in the study. After the adjustment of age and gender compenent, the prevalence of albuminuria was 8.5%, hematuria 5.1%, and reduced eGFR 1.5%. Approximately 14.6% subjects had at least one indicator of kidney damage, and the awareness rate was 16.5%. Age, hypercholesteremia, hypertriglyceridemia, hypertension and diabetes were independently correlated with albuminuria. Female, age, hypertriglyceridemia and hyperuricemia were independently correlated with reduced renal function. Female was independently correlated with hematuria. Conclusions The prevalence of chronic kidney disease is 14.6% and the awareness rate is 16.5% in suburban adult population of the central south area of China. The spectrum and correlated factors of CKD in this county undergoing fast economic development are close to those of Guangzhou and developed countries.

OBJECTIVE: Exploring the intra-axonal overloading of calcium ion (Ca(2+)) in brain diffuse axonal injury (DAI) and the therapeutic effect of calcium antagonist(Nimotop) on DAI. METHODS: Fourteen SD rats were divided into injury group, treatment group and control group. The DAI model of rats was produced by using a head-instant-axial-rotation device. Tissues from the medulla oblongata of rats were taken 2-24 h post-injury and processed for electron microscopic observation by a cytochemical technique for calcium ion. RESULTS: In the injured rats there was evidence of local disruption of myelin sheath,lucent spaces between myelin sheath lamellae, separation of axolemma from the inner layer of myelin sheath, peripheral accumulation of organellae, intra-axonal formation of vacuoles and reduction of mitochondria. A large number of fine calcium deposits were seen on the affected myelin sheath. The severity of the myelin sheath lesion was related positively to the number of calcium deposits on it. In the later post-injury period the coarse calcium particles appeared within the damaged axon. Neuronal somas and microvascular endotheliums showed a lot of vacuoles and some fine calcium deposits. Many microvilli formed on the luminal aspect of endothelium. In the treatment group myelin sheath tended to be injured locally, and axoplasmic mitochondria were nearly normal in number, structure, and distribution. Few calcium deposits were found in axons. Vacuolization was obviously reduced in neuronal soma and endothelium. CONCLUSIONS: In DAI there exists an intra-axonal overloading of calcium ion, which is a key factor to the occurrence and development of DAI. Early use of Nimotop can alleviate DAI.

Objective:To investigate the correlation of mRNA expression levels and DNA methylation levels of Alu-mediated p21 transcriptional regulator (APTR) with hepatitis B virus infection.Methods:One hundred patients with HBV infection admitted in Affiliated Hospital of Yunnan University during January to December 2019 were enrolled in the study, including 50 patients with chronic hepatitis B (CHB group) and 50 asymptomatic HBV carriers (ASC group); and 50 healthy subjects were also enrolled as the healthy control group. The DNA methylation levels of APTR gene were detected by methylation-sensitive high-resolution melting (MS-HRM); the expression levels of APTR mRNA were detected by fluorescence real-time quantitative PCR (qRT-PCR). Pearson correlation or Spearman rank correlation was used for correlation analysis.Results:There were significant differences in the APTR DNA methylation levels among the CHB, ASC and healthy control groups {[12.02 (9.30, 23.32)]%, [10.02 (8.46, 17.44)]% and [8.86 (7.82, 11.57)]%, χ2=13.360, P<0.01}. The APTR DNA methylation levels were significantly higher in CHB group than those in healthy control group( Z=31.480, P<0.01). There were significant differences in the APTR mRNA expression levels among CHB, ASC and healthy control groups (2.38±1.41, 5.78±2.78 and 5.70±2.66, F=33.720, P<0.01). The APTR mRNA expression levels were significantly lower in CHB group than those in healthy control and ASC groups ( t=7.808 and 7.724, both P<0.01). Correlation analysis showed that the DNA methylation level of APTR gene was negatively correlated with mRNA expression levels ( r=-0.305, P<0.01) in all subjects. The DNA methylation level of APTR gene was positively correlated with HBsAg level ( r=0.231, P=0.022), and the mRNA expression level was negatively correlated with HBsAg level ( r=-0.245, P=0.014) in patients with HBV infection. Conclusion:There are differences in DNA methylation and mRNA expression of APTR gene in different stages of HBV infection, suggesting that APTR gene may be involved in the immune regulation of HBV infection.