OBJECTIVETo explore the correlation of multi-slice CT findings to the clinical staging and prognosis of intestinal obstruction due to mesenteric blood vessel infarction.

METHODSFifty-four patients with intestinal obstruction resulting from infarction of the mesenteric vein or artery underwent multi-slice CT scanning, and the CT findings were analyzed for their relation with the intestinal ischemia and prognosis.

RESULTSSixteen patients were confirmed to have mesenteric arterial thrombosis (29%) and 40 had mesenteric venous thromboses (71%) by multi-slice CT scanning. The total mortality rate was 29%, of which mesenteric artery infarction took up 87% and mesenteric vein infarction 5%. The prognosis of the patients was closely related to the cause of the bowel infarction. Such CT findings as increased intensity of the intestinal canal and decreased enhancement and thickening of the bowel wall indicated favorable prognosis, whereas the signs of paper-thin wall sign, fecal sign, pneumatosis of the bowel wall, mesenteric veno gas and pneumoperitoneum all suggested poor prognosis.

CONCLUSIONMulti-slice CT scanning can identify mesenteric blood vessel infarction resulting in intestinal obstruction, and the CT signs can offer objective and valuable information for clinical staging and prognostic evaluation.

Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Infarction ; diagnostic imaging ; pathology ; Intestines ; blood supply ; Ischemia ; diagnostic imaging ; pathology ; Male ; Mesenteric Ischemia ; Middle Aged ; Neoplasm Staging ; Prognosis ; Tomography, Spiral Computed ; methods ; Vascular Diseases ; diagnostic imaging ; pathology

We constructed the AFP promotor, suicide gene and EGFP eukaryotic expression vector recombinant plasmid, and this plasmid DNA was encapsulated by biodegradable, biocompatible polymer PLGA to prepare nanoparticles. The results demonstrate that the mean diameter of DNA-PLGA-NP is 68 nm, the encapsulation ratio reaches to 80%, and the PLGA nanoparticles can protect plasmid DNA from digestion by deoxyribonuclease I (DNaseI) and sonication-induced shearing in vitro.
Biocompatible Materials ; Biodegradation, Environmental ; DNA ; administration & dosage ; Genetic Vectors ; In Vitro Techniques ; Lactic Acid ; Particle Size ; Plasmids ; genetics ; Polyglycolic Acid ; Polymers ; Recombination, Genetic

OBJECTIVETo observe the effect of rhynchophylline on methamphetamine-dependent zebrafish and explore the possible mechanism.

METHODSZebrafish were divided into control group, amphetamine group, low- (50 mg/kg) and high (100 mg/kg)-dose rhynchophylline groups, and ketamine (150 mg/kg) group. Conditioned place preference (CPP) was induced in zebrafish with methamphetamine, and the staying time in the drug box and the tracking map of the zebrafish were observed with Noldus Ethovision XT system. The protein expressions of TH, NR2B and GLUR2 in the brain of zebrafish with CPP were detected with Western blotting.

RESULTSCompared with the control group, zebrafish in methamphetamine group showed significant variations in the staying time and swimming distance in the drug box after conditioning (P<0.05) with obvious alterations of NR2B, TH and GLUR2 expressions in the brain (P<0.05). Treatment of methamphetamine-dependent zebrafish with high-dose rhynchophylline significantly reduced the variations in the staying time and swimming distance in the drug box (P<0.05) and in the expressions of NR2B, TH and GLUR2 in the brain (P<0.05).

CONCLUSIONRhynchophylline can inhibit methamphetamine dependence in zebrafish, the mechanism of which may involve the expressions of TH, NR2B and GLUR2 proteins in the brain.

Cardiac arrest is the most critical condition for patients. Early identification of the cause of cardiac arrest and timely intervention on different causes are the key to treatment. Bedside ultrasound can simply, quickly, and effectively assess the cause of cardiac arrest, select the appropriate tracheal tube for the patient, confirm the position of the endotracheal tube, confirm the position of the endotracheal tube, and effectively evaluate the effect of mechanical ventilation and organ resuscitation after interventions. This article reviews bedside ultrasound in identifying the reversible causes of cardiac arrest, airway management, and evaluating organ function after resuscitation.

OBJECTIVE: To explore the risk factors of gastric cancer in the rural area of Henan province. METHODS: Three hundred and twenty-five families with gastric cancer and 325 control families (1010 persons in each group) were selected among the rural residents in 4 counties of Henan province. Totally 2020 people were surveyed and assessed using population-based case-control family study. RESULTS: Gastric cancer was related to stomach upset, irregular dietary, hobby for salty taste, residual food, and history of mental stimulus. CONCLUSION Stomach upset, irregular dietary, hobby for salty taste, residual food, and history of mental stimulus are the risk factors of gastric cancer.
Case-Control Studies ; China ; epidemiology ; Feeding Behavior ; Humans ; Risk Factors ; Rural Population ; Stomach Neoplasms ; etiology ; genetics ; Surveys and Questionnaires

Objective A variety of miRNAs have been found to be involved in the occurrence and development of colorectal cancer. This paper aim to investigate the clinical and biological relevance of miR-217 and the pathway by which miR-217 may be involved in progression in colorectal cancer. Methods According to the diameter of tumor, the tumor was divided into tumors>5 cm(n=22) and tumors≤5 cm(n=28); 18 cases of colorectal cancer I-II specimens and 32 of III-IV patients; according to median expression of miR-217, the specimens were divided into high expression group and low expression group. The expression of miR-217 in 50 colon cancer patients’ carcinoma and adjacent tissues was determined by qRT-PCR. Cells were grouped: overexpression control Group (transfected control mimic) and miR-217 overexpression group(transfected miR-217 mimic), low expression control group((transfected control inhibitor) and miR-217 low expression group(transfected miR-217 inhibitor), miR-217&ERK1/2 low expression group(transfected miR-217 inhibitor+U0126). MiR-217 and HCT116 cells were over expressed in SW480 cells,and miR-217 was knocked down. A series of biological function assays were performed to assess cell viability (cck-8 assay), clony formation ability (clony formation assay), proliferation (edu assay), Changes in ERK1/2 expression were measured at protein level, and the relationship between miR-217 and ERK1/2 in colorectal cancer cells was explored by relevant rescue experiments. Results Compared with colorectal adjacent noncancerous tissues, the expression of miR-217 was significantly decreased in carcinoma tissues(-1.360±0.645 vs 2.244±0.168, P<0.01); the expression of miR-217 in tumors with a diameter >5cm was significantly lower than that of tumors with a diameter ≤5cm(-1.718±0.272 vs -0.587±0.288, P<0.01); the expression of miR-217 in stage I-II colorectal cancer tissues was significantly higher than that stage III-IV(-0.413±0.330 vs -01.463±0.230, P<0.05); the expression of miR-217 in the miR-217 overexpression group was significantly higher than miR-217 overexpression control group(15.120±0.522 vs 1.004±0.003, P<0.01), and the number of clone formation was significantly less than that of the overexpression control group(199.30±15.62 vs 439.70±18.91, P<0.01) . In HCT116 cells, the expression of miR-217 in the miR-217low expression group was significantly lower than miR-217 low expression control group(0.2070±0.021 vs 1.006±0.003, P<0.01), and the number of clone formation was significantly higher than that control group(237.30±12.14 vs 117.00±7.00, P<0.01) . When miR-217 overexpressed in SW480, the protein expression of ERK1/2 decreased; when miR-217 was inhibited in HCT116, the protein expression of ERK1/2 increased. The number of colons in ERK1/2 low expression group was significantly lower than that miR-217&ERK1/2 low expression group(221.70±12.73 vs 108.00±5.51) , the difference was statistically significant(P<0.01). Conclusion Low expression of miR-217 is observed in both colorectal cancer tissues and cells, and miR-217 can affect tumor cell proliferation in the progression of colorectal cancer partly by inhibiting the expression of ERK1/2.

OBJECTIVE: To investigate the therapeutic effect of Epothilone D on traumatic optic neuropathy (TON) in rats. METHODS: Forty-two SD rats were randomized to receive intraperitoneal injection of 1.0 mg/kg Epothilone D or DMSO (control) every 3 days until day 28, and rat models of TON were established on the second day after the first administration. On days 3, 7, and 28, examination of flash visual evoked potentials (FVEP), immunofluorescence staining and Western blotting were performed to examine the visual pathway features, number of retinal ganglion cells (RGCs), GAP43 expression level in damaged axons, and changes of Tau and pTau-396/404 in the retina and optic nerve. RESULTS: In Epothilone D treatment group, RGC loss rate was significantly decreased by 19.12% (P=0.032) on day 3 and by 22.67% (P=0.042) on day 28 as compared with the rats in the control group, but FVEP examination failed to show physiological improvement in the visual pathway on day 28 in terms of the relative latency of N2 wave (P=0.236) and relative amplitude attenuation of P2-N2 wave (P=0.441). The total Tau content in the retina of the treatment group was significantly increased compared with that in the control group on day 3 (P < 0.001), showing a consistent change with ptau-396/404 level. In the optic nerve axons, the total Tau level in the treatment group was significantly lower than that in the control group on day 7 (P=0.002), but the changes of the total Tau and pTau-396/404 level did not show an obvious correlation. Epothilone D induced persistent expression of GAP43 in the damaged axons, detectable even on day 28 of the experiment. CONCLUSION Epothilone D treatment can protect against TON in rats by promoting the survival of injured RGCs, enhancing Tau content in the surviving RGCs, reducing Tau accumulation in injured axons, and stimulating sustained regeneration of axons.
Animals ; Disease Models, Animal ; Epothilones ; Evoked Potentials, Visual ; Nerve Regeneration/physiology* ; Optic Nerve Injuries/metabolism* ; Rats ; Rats, Sprague-Dawley ; Retinal Ganglion Cells/physiology*

Objective:To explore the difference of lymphocyte subsets in peripheral blood(PB)between aplastic anemia(AA)and hypoplastic myelodysplastic syndrome(hypo-MDS)patients,meanwhile to compare the clinical parameters obtained from PB and bone marrow(BM).Methods:The lymphocyte subsets in hypo-MDS(n=25)and AA(n=33)patients were investigated by flow cytometry.Meanwhile,the differences in PB cell counts,biochemical indicators,BM cell counts and abnormal chromosomes between the two groups were analyzed.Results:The percentage of CD8+T cells in A A group was significantly higher than that in hypo-MDS group(P=0.001),while the percentage of CD4+T cells and the CD4+/CD8+ratio in AA group were obviously lower than those in hypo-MDS group(P=0.015 and0.001,respectively).Furthermore,the proportion of CD4+andCD8+activated T(TA)cells,and memory Tregs in AA group was distinctly lower than those in hypo-MDS group(P=0.043,0.015 and 0.024,respectively).Nevertheless,the percentage of CD8+naive T(TN)cells in AA patients was remarkably higher(P=0.044).And hypo-MDS patients had declined lymphocyte counts(P=0.025),increased levels of total bilirubin(TBil),lactate dehydrogenase(LDH),vitamin B12 and proportion of BM blasts than AA patients(P=0.019,0.023,0.027 and 0.045,respectively).Conclusion:In this study it was confirmed that the percentages of CD4+and CD8+TA cells,memory Tregs and CD8+TN cells were significantly different between AA and hypo-MDS patients,which provide an essential basis for the identification of these two diseases.

Objective The level of lactic acid in blood can reflect the degree of ischemia and hypoxia of brain tissue and cerebral perfusion pressure. The aim of this paper is to explore the value of blood lactate and lactate clearance in evaluating the survival rate and neurological outcome of patients with craniocerebral trauma. Methods The clinical data of 497 craniocerebral trauma patients admitted to our hospital from September 2017 to July 2018 were collected and retrospectively analyzed. Patients were divided into groups with different 6 h lactate clearance rates and admission lactate levels, and the differences in mortality and outcome of neurological function in each group were compared. Results The serum admission lactate levels、serum lactate levels at 6 hours, 28-day mortality and 28-day poor nerve function prognosis rate of patients with different 6h lactate clearance rates were statistically significant differences(P < 0. 05). The efficacy of 6h lactic acid to predict the mortality rate of patients was better than that of admission lactic acid and 6h lactate clearance rate (Z=3.71、Z=3.95,P<0.05). However, in predicting the neurological function of patients, the lactate clearance rate is not better than blood lactate level at any time(Z=1.30，Z=0.81，P>0.05). Conclusion 6h lactic acid has the best ability to judge the mortality of patients while lactic acid clearance rate is not better than the blood lactate level at any time in predicting the neurological function of patients.