Observations were conducted on 11 kinds of tissues and organs(brown adipose tissue, thymus gland, blood, heart, lungs, muscle, bone, kidneys, spleen, liver, and intestine) in experimental animals, which were fed on crops from endemic areas of Keshan disease and non-endemic areas for 8-13 weeks. The absorption and distribution of 75Se (Na2 SeO3) in above tissue and organs were studied. Results revealed that the absorption of Na2-SeO3 in experimental group fed on crops from endemic area was higher than control group fed on crops from non-endemic area. The gradient of distribution of 75Se in various organs was regular: The highest absorption was in kidneys, the lesser was in liver, spleen and thyrnus, the least was in muscle, heart and bones.In one week observation, the contents of 75Se changed as time passed, but the fluctuating changes of the two groups were different.The regular differences of 75Se absorption as above, revealed a distinction between endemic and non-endemic crops. Under the influences of the crops on experimental animals, there appeared more or less a condition of selenium deficiency, which proved that the soil-water-food chain had apparently influenced the selenium metabolism of the organisms.

Objective To investigate the function of serum Interleukin-6 (IL-6) in the formation of cerebral edema after acute cerebral infarction through dynamic changes of serum IL-6 and MRI indicators.Methods One hundred and twenty-eight patients with cerebral edema after acute cerebral infarction and 30 healthy were selected as our subjects.The serum IL-6 were measured in at 1,5 and 14 d after acute cerebral infarction.MRI scans were performed in the corresponding time,and then processed synthesis of apparent diffusion coefficients (ADC) graph.Cerebral infarction volume,signal intensity ratio (SIR) of each sequence and relative apparent diffusion coefficient(rADC) were measured and calculated.Results The serum IL-6 in patients with acute cerebral infarction at 1 d after cerebral infarction was significantly higher than that in normal control group and reached the peak level at 5th D after cerebral infarction,significantly decreased at 14th d.The serum IL-6 of each time point were significantly higher than that of normal control group(P =0.000).There were liner positive correlation between the serum IL-6 and the volume of cerebral infarction and SIR of T2 weighted image and fluid attenuation inversion recovery (r =0.750,0.621,0.691 ; P =0.000).The serum of IL-6 and SIR of T1 weighted image was showed negative correlation (r =-0.404,P =0.000).The serum of IL-6 and SIR of diffusion-weighted imaging sequence at 1,5 d after cerebral infarction showed a positive correlation (r =0.678,P =0.000).There was liner negative correlation between the serum IL-6 and rADC at 1 d after cerebral infarction (r =-0.826,P =0.000).Conclusion The rise of serum IL-6 may promote the formation and development of ischemic cerebral edema.

Objective:To investigate the effects of PDCA method on improving the accuracy of the Autar Deep Venous Thrombosis (DVT) Scale used by nurses to assess the risk of deep venous thrombosis in surgical patients.Methods:Applied the way of PDCA, namely, raising questions, analyzing reasons, implementing measures, feeding back effects to professional explanate the difficulty in using the scale, moreover, training the nurses used level education method between August 2017 and December2018.The accuracy and consistency of the scale were compared before and after interventions.Results:A total 396 patients were evaluated in the study. There were significant differences in the consistency of evaluation among hospitalized, post-operative and discharged patients after intervention compared with before intervention ( P< 0.0167).The consistency of assessment of team members and responsible nurses increased from 68 to 120 cases, and the consistency of assessment reached 90.91%. The Kappa consistency of assessment of responsible nurses and team members increased from 0.354 before intervention to 0.879 after intervention. The effect was remarkable. Conclusions:PDCA cycle method is based on the problems found in clinical practice. It clarifies the professional terms and rules used in the scale, improves the accuracy and consistency of the Autar DVT scale used by nurses, correctly reflects the risk of thrombosis, ensures the safety of patients, and is worthy of promotion and reference.

Objective To compare the clinical efficacies of Qin’s scalp eight-needle acupuncture versus conventional scalp acupuncture in treating cancer pain. Method Sixty cancer pain patients with clinically or pathologically diagnosed malignant tumors were allocated, using a random number table, to a treatment (Qin’s scalp eight-needle acupuncture) group of 30 cases and a control (conventional scalp acupuncture) group of 30 cases. The treatment group received Qin’s scalp eight-needle acupuncture at selected points every other day and the control group, conventional scalp acupuncture every other day. One course of treatment consisted of 10 days. Result Cancer pain was relieved, analgesic dosage decreased, adverse reactions to analgesics reduced and quality of life raised significantly in the treatment group compared with the control group. Conclusion Qin’s scalp eight-needle acupuncture is effective in treating cancer pain.

Objectives To investigate the effects of cell aging on the disorders relating to gastric mucosa aging.Methods A treatment of 200 μmol/L H2O2 was used to induce senescence of human gastric epithelial cell line GES-1,and the cell growth curve was monitored.Senescence secretory phenotypes were observed by detecting the protein level of p53 and p16INK4a with senescence-associated β-galactosidase(SA-β gal)staining and Western blot testing.The mRNA levels of senescence-associated secretory phenotype(SASP)factors in human gastric epithelial GES-1 cell including IL-1β,IL-6,IL-8,TGF-β、IFN-γ,and VEGF-A were detected by RT PCR.The mRNA expression levels of IL-1β,IL-6,IL-8,TGF-β,IFN-γ,and VEGF in the conditioned medium were detected by ELISA analysis.Results The 200 μmol/L H2O2-induced GES-1 cells stopped proliferating after 3 days of treatment,and cells enlarged and flattened at 10 days.The increased SA-β-gal staining(P＜0.001) and the increased expression levels of p53 and p16INK4a proteins indicated the success of establishing the aging model of GES-1.The mRNA levels of IL 1β,IL6,IL8,TGF-β,and IFNγ were higher(t=2.94,3.38,3.15,3.64,2.97;P=0.015,0.000,0.000,0.000,0.000)and the mRNA level of VEGF-A was lower(t=2.31,P =0.20) in senescent GES-1 cells than in the control group.In the conditioned medium of senescent GES-1 cells,the levels of IL-1β,IL6,IL8,TGF-β1,and IFNγ were higher in the H2O2-induced group [(3.12±0.21)μg/L,(4.26±0.15)μg/L,(3.37±0.14)μg/L,(5.34±0.19)μg/L,and(2.90±0.47)μg/L]than in the negative control group[(0.24±0.04,0.04±0.07,0.52±0.02,1.05±0.10,0.52±0.02,respectively,P＜0.001)],while the level of VEGF was lower in the H2O2-induced group than in the negative control group(0.21±0.03)μg/L vs (0.59±0.07)μg/L(P＜0.05).Conclusions The changes in senescence-associated secretory phenotype factors of the aging human gastric epithelial cells induced by oxidative stress may promote chronic gastritis and gastric cancer.

Objective:To evaluate the role of lactate dehydrogenase in diabetic neuropathic pain (DNP) and the relationship with peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) in mice.Methods:SPF-grade healthy male C57BL/6J mice, aged 6-8 weeks, weighing 18-22 g, were used to establish diabetes mellitus model by intraperitoneal injection of streptozotocin (STZ) 120 mg/kg. Twenty-four mice with diabetes mellitus were divided into 2 groups ( n=12 each) using a random number table method: DNP group and DNP + oxamate group (OXA group). Another 12 SPF-grade healthy male C57BL/6J mice were selected as control group (C group). In OXA group, oxamate 750 mg/kg was intraperitoneally injected once a day for 28 consecutive days. The equal volume of normal saline was given instead in C group and DNP group. The mechanical paw withdrawal threshold (MWT), blood glucose and body weight were measured at 3 days before STZ injection and at 1, 2, 3 and 4 weeks after STZ injection (T 0-4). After the last behavioural test was completed, blood samples were collected from the posterior orbits of anesthetized mice for determination of serum lactate concentrations. The animals were then sacrificed and the tissues from the prefrontal cortex of the brain were taken for determination of lactate content, mitochondrial membrane potential (by the JC-1), content of reactive oxygen species (ROS) (using dihydroethidium probes), and level of histone lactylation and expression of PGC-1α (by Western blot). Results:Compared with C group, the MWT was significantly decreased at T 2-4, the serum lactate concentrations, contents of lactate and ROS and level of histone lactylation were increased, the mitochondrial membrane potential was decreased, and the expression of PGC-1α was down-regulated in DNP and OXA groups ( P<0.05). Compared with DNP group, no significant change was found in blood glucose and body weight ( P>0.05), the MWT was significantly increased at T 2-4, the serum lactate concentrations, contents of lactate and ROS and level of histone lactylation were decreased, the mitochondrial membrane potential was increased, and the expression of PGC-1α was up-regulated in OXA group ( P<0.05). Conclusions:Lactate dehydrogenase promotes the development of DNP, and the mechanism is related to promotion of increase in histone lactfication and down-regulation of PGC-1α expression in the prefrontal cortex of mice.