Objective To study the regional homogeneity (ReHo) of default-mode network (DMN) in patients with minimal hepatic encephalopathy (MHE) with resting state fMRI.Methods Eighteen MHE patients and eighteen healthy controls (HC) underwent standard resting state fMRI scan.The resting state fMRI data were analyzed with the ReHo method to observe the changes of DMN in the patients in contrast to the controls.Results Compared to healthy controls,MHE patients showed lower ReHo in bilateral MPFC/anterior cingulate cortex(V=13.257 cm3;MNI coordinates=3,24,66;t=-3.493 7),bilateral precuneus/posterior cingulate cortex(V=4.752 cm3;MNI coordinates=9,-54,45;t=-2.634 1),while higher ReHe in right medial prefrontal cortex(V=5.049 cm3;MNI coordinates=21,63,6;t=4.017 5).Conclusion In MHE patients,there is abnormal neuron activation in the widespread DMN regions under resting state, which indicated abnormal spontaneous activity consistency within DMN and endogenous brain function injury in MHE patients.ReHo can be used to observe DMN changes in MHE patients.

OBJECTIVETo investigate the changes in serum amylase (AMY) and lipase (LPS) and their clinical significance in patients with acute paraquat poisoning (APP).

METHODSThe clinical data of 62 APP. patients who were admitted to Guangzhou 12th People's Hospital in 2014 were retrospectively analyzed. With clinical death being regarded as the end point of observation, the 62 patients were divided into survival group (n=32) and death group (n=30). The fasting venous blood of the patients on the 1st, 3rd, and 7th day after admission were collected, and the AMY and LPS levels were determined; the obtained data were compared between the two groups and analyzed statistically.

RESULTSThe AMY and LPS levels of the survival group on the 1st, 3rd, and 7th day after admission were significantly lower than those of the death group (P<0.05); the AMY and LPS levels of the death group on the 3rd day were significantly higher than those on the 1st day after admission (P<0.05); the survival group demonstrated no significant changes in AMY and LPS levels (P>0.05).

CONCLUSIONChanges in AMY and LPS levels in APP patients are reliable indicators for the determination of poisoning severity and prognosis.

Amylases ; blood ; Humans ; Lipase ; blood ; Paraquat ; poisoning ; Poisoning ; blood ; mortality ; Prognosis ; Retrospective Studies

Objective In human,both in vivo and in vitro,telomere shortening appears to be a major component of cell senescence and aging. However, gender specific human telomere shortening needs to be further characterized. Therefore our study is aimed at clarifying gender-dependent profiles of telomere shortening. Methods 123 peripheral blood samples were collected from healthy individuals of different ages. The mean telomeric restricted fragment (TRF) was measured using Southern Blotting with Dig-labeled probe. Results Distinguished dynamics profiles of telomere shortening were observed among different age groups. Conclusion The result indicates that there are gender specific dynamic profiles of telomere shortening. Therefore, the gender must be considered when an individual age is estimated by telomeric restricted fragment length assay.

Objective Estimate the paternity exclusion probability for 15 short tandem repeats (CODIS set plus Penta D and Penta E) in duo paternity tests. Methods 644 random individuals were paired to con-struct 207046 fictitious duo families. Cases of non-exclusion or with only one exclusionarylocus were count-ed. Results 27 cases could not be excluded by the 15 STR loci. The combined probability of exclusion was 0.999869. Number of cases showing only one exclusionary locus was 384 (0.185%). Conclusion To con-firm relationship in duo cases with only 15 STRs should be careful. Extensive genetic markers is needed to discriminate one locus exclusion or mutation.

AIM: To observe the effect of compound clindamycin liniment on acne vulgaris. 　METHODS: A multi-centre, open-label trial of compound clindamycin liniment in treating acne vulgaris. One hundred and fifty-three patients used compound clindamycin liniment on face three times per day for 4 wk.　RESULTS: The total excellent response rate was 83.0%. The total effect rate on pustule and papule was 96.1% and 80.7% respectively. The adverse reaction rate was 1.9%.　CONCLUSION: Compound clindamycin liniment is an effective and safe drug in the treatment of acne vulgaris.

Objective To investigate the effects of H. pylori infection on cyclooxygenase 2 (COX 2) expression in gastric antral mucosa. Methods Antral biopsies were taken from 46 patients with chronic gastritis and H. pylori infection before and after anti H. pylori treatment. COX 2 protein was stained by immunohistochemical method. Gastritis and H. pylori infection status were graded according to the updated. Sydney system. Results Cytoplasmic staining of COX 2 protein could be detected in epithelial cell both before and after eradication of H. pylori . The mean percentage of the cells staining with COX 2 was significantly higher in H. pylori infected mucosa, compared with the mucosa after successful H. pylori eradication [(20.1?13.1)% vs (13.8?5.9)%, P

Object In order to identify the medicine at the molecular level, the internal transcribed spacers (ITS) of Saussurea medusa Maxim and its easily confusable species were sequenced Methods The double stranded DNA was amplified using PCR systems 9 600 kits and sequenced on an ABI 377 automated sequencer from both directions Results The ITS sequences of S medusa of different populations showed no variation, but there existed distinct variation between S medusa and its confusable species Conclusion ITS sequences can be used for the molecular authentication between S medusa and its confusable species

Medical endoscope capsule is described from its construction principle and drive system.The scheme and function of the drive system,especially the driving velocity and the direction control for that based on FPGA,are introduced in detail.Experiments indicate that the micro-drive system,with a linear speed ranging from 0 to 10 mm/s,can move forward and backward,and turn left and right discretionarily.The availability of programmable logic device makes the system reliable and flexible.

Objective To study the clinical effects of methylenetetrahydrofolate reductase(MTHFR) C677T gene mutation on mild vascular cognitive impairment(VCI)in patients with cerebral infarction.Methods The prospective study was conducted in 180 patients with atherosclerotic acute cerebral infarction hospitalized from June 2015 to May 2016.180 patients were divided into normal homocysteine(Hcy)group (Hcy 5.46～16.20 μmol / L,n=130)and high Hcy group(Hcy＞16.20 μmol / L,n=50).MTHFR C677T genotypes were detected by polymerase chain reaction-restriction endonuclease fragment length polymorphism.The VCI state and risk factors for VCI were analyzed with Montreal Cognitive Assessment scale(MoCA)and Mini Mental State Examination(MMSE)score in patients with acute cerebral infarction on admission and 14 days,30 days and 90 days after admission.Results MMSE and MoCA scores at 14 days,30 days,90 days after admission were lower in high Hcy group than in normal Hcy group(P＜0.05 or P＜0.01).MMSE and MoCA scores were lower in T/T genotype than in C/C genotype(P＜0.05)at 14 day after admission,and lower in C/T genotype than in C/C genotype at 30 day and 90 day follow up(P＜0.05or P＜0.01).Logistic regression analysis showed that Hcy may be independent risk factors for mild VCI(OR =1.274,95％CI:1.027～1.264,P=0.018).Conclusions MTHFR C677T gene mutations may cause hyper-homocysteinemia,and promote the emergence of VCI in patients with cerebral infarction.MTHFR C677T gene mutations may be a genetic susceptibility factor for VCL

Ischemic cerebrovascular disease(ICVD) is temporary or permanent reduction of blood flow of the main arteries of the brain caused by cerebral transient,sudden,reversible neurological dysfunction.Timely recovery of blood supply to the brain is the most important way to save the patient's life,but at the same time gave restore blood perfusion brain tissue organs brought new damage,which is cerebeal ischemia reperfusion injury(CIRI).How to build an ideal,efficient,easy to operate brain ischemia-reperfusion injury in animal models to simulate the clinical study,and how to improve and innovate this model by researchers in recent years were reviewed in this article.