Reason of postprandial low-density lipoprotein cholesterol reduction measured by enzymatic assays: based on nuclear magnetic resonance method / 中华检验医学杂志

Objective:To explore the postprandial plasma low-density lipoprotein cholesterol (LDL-C) changes by various detection methods.Methods:A total of 85 subjects admitted to the Second Xiangya Hospital of Central South University from November 2017 to May 2019 were included. Serum samples were collected from fasting and the 2 nd hour and the 4 th hour after breakfast. Serum lipid levels were measured with enzymatic assays and nuclear magnetic resonance spectroscopy (NMRS), and proprotein invertase subtilisin/kexin type 9 (PCSK9) levels were measured with enzyme-linked immunosorbent assays. The differences of blood lipid components at different time points were compared by Friedman two-way rank analysis of variance and Wilcoxon signed rank test, and the correlation between PCSK9 level and lipoprotein particles was analyzed by Spearman correlation. Results:Measured by enzymatic assays, compared with the fasting state, LDL-C decreased at the 2 nd hour and the 4 th hour after the meal (2.58[2.09, 3.12], 2.47[1.92, 3.02], 2.37[1.82, 2.80] mmol/L, P<0.001). Measured by NMRS, the concentration of LDL particles (1 086[830, 1 239], 1 083[848, 1 213], 1 061[814, 1 213] nmol/L, P=0.417) did not change significantly, and cholesterol in LDL particles were 2.13 (1.56, 2.54), 2.16 (1.68, 2.50), 2.06 (1.58, 2.50) mmol/L, respectively ( P=0.047)，and postprandial cholesterol in LDL particles in the 2 nd hour and in the 4 th hour did not change significantly compared with fasting ( P>0.05). while the concentration of large LDL particles (185.2[150.6,221.6], 173.0[144.8,220.3], 178.1[144.0,233.6] nmol/L, P=0.001), and the cholesterol level in large LDL particles (0.49[0.39, 0.57], 0.47[0.38, 0.57], 0.46[0.37, 0.58]mmol/L, P<0.001) decreased after the meal. The PCSK9 level also decreased significantly after the meal (299[233, 397], 257[208, 342], 251[215, 340] ng/ml, P<0.001). There was an independent positive correlation between the decrease of PCSK9 levels and the increase of remnant cholesterol detected by MNRS after the meal ( r=0.232, P=0.035). Conclusions:The postprandial LDL-C level measured by NMRS and enzymatic assays is not consistent. The decrease of LDL-C measured by enzymatic assays is not caused by the clearance of LDL particles, but by the redistribution of cholesterol in each LDL subfraction.

Analysis of the death risk factors of patients with severe cerebral vascular disease / 中国基层医药

Objective To investigate the death risk of patients with severe cerebral vascular disease. Methods The clinical data of 80 cases of patients with severe cerebral vascular disease were analyzed retrospectively. According to the clinical outcome,80 cases were divided into the survival group and death group,and the factors of death risk were analyzed by Logistic regression.Results The cases of the survival group and death group patients were 59 cases(73.75%) and 21 cases(26.25%) respectively.After multiple regression analysis,age,temperature, glasgow coma score,hypertension,stroke,diabetes,chronic obstructive disease,digestive tracthemorrhage,pneumonia, intracranial hemorrhage or infarction and multiple organfailure were correlated with the death of patients with severe cerebral vascular disease significantly(P=0.023,0.011,0.002,0.028,0.004,0.023,0.029,0.028,0.001,0.007, 0.001).Conclusion The death of patients with severe cerebral vascular disease is associated with age,combined disease,syndrome and disease attributes.

The effects of tuina manipulation on the mechanical characteristics of contractual Achilles tendons of rabbits / 中华物理医学与康复杂志

Objective To investigate the effects of tuina manipulation on creep rate and maximal breaking stress of contractural Achilles tendons of rabbits. Methods Twenty-four rabbits were randomly divided into contrac-tural Achilles tendon model group, free activities group and tuina manipulation group. The opposite legs of model group were used as normal controls. Creep rate and maximal breaking stress of Achilles tendons were compared among the 4 groups. Results The average creep rate in tuina manipulation group approximated to that in normal group and was lower than that in model and free activities groups. The average maximal breaking stress in tuina manipulation group approximated to that in normal group and was higher than that in model and free activities groups. Conclusion Tuina manipulation can promote the creep rate and maximal breaking stress of contractura Achilles tendon approximately to normal level. Tuina manipulation may be useful in rehabilitation.

Changes of serum IL-10 in perioperative period in patients with hepatocellular carcinoma and its significance / 中华肝胆外科杂志

Objective　To determine the changes of serum IL-10 level in perioperative period in patients with hepatocellular carcinoma (HCC) and discuss its significance. Methods　The serum IL-10 level was determined with ELISA in 30 patients with HCC and 30 healthy volunteers. Results　The serum IL-10 level was significantly higher in the perioperative period in patients with HCC than in the healthy volunteers. In the patients with HCC, the level was higher before than after the operation. Meanwhile, it was markedly higher in patients with poorly differentiated tumor or the tumor with a diameter over 5 cm than in those with well-differentiated tumor or the tumor with a diameter less than 5 cm (P<0.01). Conclusion　HCC cells might produce IL-10 that may participate in immune response of HCC. Furthermore, IL-10 might be a factor that can reflect the differentiation grade, assess the prognosis and predict recurrence of HCC.