Risk factors for cow's milk protein allergy in infants: a multicenter survey / 中国当代儿科杂志

OBJECTIVE@#To investigate the risk factors for cow's milk protein allergy (CMPA) among infants through a multicenter clinical study.@*METHODS@#A total of 1 829 infants, aged 1-12 months, who attended the outpatient service of the pediatric department in six hospitals in Shenzhen, China from June 2016 to May 2017 were enrolled as subjects. A questionnaire survey was performed to screen out suspected cases of CMPA. Food avoidance and oral food challenge tests were used to make a confirmed diagnosis of CMPA CMPA. A multivariate logistic regression analysis was used to investigate the risk factors for CMPA.@*RESULTS@#Among the 1 829 infants, 82 (4.48%) were diagnosed with CMPA. The multivariate logistic regression analysis showed that maternal food allergy (OR=4.91, 95%CI: 2.24-10.76, P6 months (OR=0.38, 95%CI: 0.17-0.86, P<0.05) were protective factors.@*CONCLUSIONS@#The introduction of complementary food at an age of <4 months, maternal food allergy, and antibiotic exposure during pregnancy are risk factors for CMPA in infants.

Effects of calcium elevation on intracellular oxidative stress in human lens epithelial cells SRA01/04 / 眼科新进展

Objective To investigate the influence of calcium elevation on oxida tive stress in human lens epithelial cells (HLEC) SRA01/04.Method The cells (2 x 103 cells/well) which in the period of logarithmic phase were seeded into 96-well plates with three replicates for the two groups;and in the experimental group,SRA01/04 cells were exposed to a CaCI2 concentration gradient (3 mmol · L-1,5 mmol · L-1,7 mmol · L-1,9 mmol · L-1,11 mmol · L-1,13 mmol · L-1,15 mmol · L-1,17 mmol · L-1,19 mmol · L-1) for 0 h,12 h,24 h,36 h;while the cells in the control group were cultured in complete 1640 medium.Cell counting kit-8 (CCK-8) assay was used to measure cell viability.The levels of intracellular superoxide dismutase (SOD),glutathione (GSH) content and oxidized glutathione (GSSG) / total glutathione (T-GSH) were determined by using the microplate-reader method with the commercial total/oxidized glutathione and sod quantification kit.Results At first,the survival rate of SRA01/04 cells treated with 3 mmol · L-1,5 mmol · L-1,7 mmol· L-1 CaCL2 for 24 h showed a significant decrease with the increase of CaCl2 concentration by CCK-8 assays,but gradually increased when the concentration increased to 9 mmol · L-1,and the difference approached statistical significance (P ＜ 0.05).Meanwhile,there was significant difference in the viability of the control group (0.592 + 0.055) and cells exposed to 15 mmol · L-1 CaCI2 (0.293 + 0.02) (t =7.811,P ＜0.05).Cell treatment with 15 mmol· L-1 CaC12 for 24 h was the most appropriate condition for HLEC apoptosis,followed by the appearance of nuclear fragmentation and dissolution,enhanced intracellular SOD viability (t =-6.417,P ＜ 0.05),decreased T-GSH content (t =13.816,P ＜ 0.05),and increased ratio of GSSG/T-GSH (t =-4.396,P ＜ 0.05) when compared with the control group,and the differences were statistically significant.Conclusion Intracellular calcium elevation can inhibit the cell viability and increase the levels of SOD and GSSG in HLEC to aggravate the intracellular oxidative damage.

Effects of calcium elevation on intracellular oxidative stress in human lens epithelial cells SRA01/04 / 眼科新进展

Objective To investigate the influence of calcium elevation on oxida tive stress in human lens epithelial cells (HLEC) SRA01/04.Method The cells (2 x 103 cells/well) which in the period of logarithmic phase were seeded into 96-well plates with three replicates for the two groups;and in the experimental group,SRA01/04 cells were exposed to a CaCI2 concentration gradient (3 mmol · L-1,5 mmol · L-1,7 mmol · L-1,9 mmol · L-1,11 mmol · L-1,13 mmol · L-1,15 mmol · L-1,17 mmol · L-1,19 mmol · L-1) for 0 h,12 h,24 h,36 h;while the cells in the control group were cultured in complete 1640 medium.Cell counting kit-8 (CCK-8) assay was used to measure cell viability.The levels of intracellular superoxide dismutase (SOD),glutathione (GSH) content and oxidized glutathione (GSSG) / total glutathione (T-GSH) were determined by using the microplate-reader method with the commercial total/oxidized glutathione and sod quantification kit.Results At first,the survival rate of SRA01/04 cells treated with 3 mmol · L-1,5 mmol · L-1,7 mmol· L-1 CaCL2 for 24 h showed a significant decrease with the increase of CaCl2 concentration by CCK-8 assays,but gradually increased when the concentration increased to 9 mmol · L-1,and the difference approached statistical significance (P ＜ 0.05).Meanwhile,there was significant difference in the viability of the control group (0.592 + 0.055) and cells exposed to 15 mmol · L-1 CaCI2 (0.293 + 0.02) (t =7.811,P ＜0.05).Cell treatment with 15 mmol· L-1 CaC12 for 24 h was the most appropriate condition for HLEC apoptosis,followed by the appearance of nuclear fragmentation and dissolution,enhanced intracellular SOD viability (t =-6.417,P ＜ 0.05),decreased T-GSH content (t =13.816,P ＜ 0.05),and increased ratio of GSSG/T-GSH (t =-4.396,P ＜ 0.05) when compared with the control group,and the differences were statistically significant.Conclusion Intracellular calcium elevation can inhibit the cell viability and increase the levels of SOD and GSSG in HLEC to aggravate the intracellular oxidative damage.

Impact of morphine on the reproductivity of male rats / 中华男科学杂志

<p><b>OBJECTIVE</b>To explore the effect of morphine on male reproductive ability and its mechanisms in the rat model of morphine tolerance.</p><p><b>METHODS</b>Twenty male SD rats were equally randomized to groups I (control) and II (morphine tolerance). On the 1st day, the basic paw withdrawal thermal latency (PWTL) was obtained from all the rats followed by subcutaneous injection of morphine at 10 mg/kg and then calculation of the percentage of the maximal possible effect (MPE) at 30 min after administration. On the 2nd day, the rats of group I were injected subcutaneously with saline and those of group I with morphine at 10 mg/kg bid for 7 days. Then all the rats were killed after behavioral tests and their testes and epididymides harvested for sperm counting and determina- tion of the expressions of Bax and Caspase-3 by immunohistochemistry.</p><p><b>RESULTS</b>On the 1st day, no obvious differences were ob- served between the two groups in the basic PWTL or the percentage of MPE. On the 7th day, the percentage of MPE was significantly decreased in group II as compared with group I (P < 0.05), while the basic PWTL showed no marked difference between the two groups. Group II also exhibited a significantly reduced epididymal perm count (P < 0.05) and remarkably upregulated expressions of Bax and Caspase-3 in comparison with group I.</p><p><b>CONCLUSION</b>Morphine might increase testicular cell apoptosis and reduce sperm concentration by upregulating the expressions of Bax and Caspase-3 in the rat model of morphine tolerance.</p>

Relatively light general anesthesia is more effective than fluid expansion in reducing the severity of epinephrine-induced hypotension during functional endoscopic sinus surgery / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Epinephrine infiltration of the nasal mucosa causes hypotension during functional endoscopic sinus surgery (FESS) under general anesthesia. A prospective randomized-controlled study was designed to determine whether relatively light general anesthesia is superior to fluid expansion in reducing epinephrine-induced hypotension during FESS.</p><p><b>METHODS</b>Ninety patients undergoing elective FESS under general anesthesia were randomly assigned to three groups with 30 patients in each. Each patient received local infiltration with adrenaline-containing (5 microg/ml) lidocaine (1%, 4 ml) under different conditions. For Group I, anesthesia was maintained with propofol 2 microg/ml and rimifentanil 2 ng/ml by TCI. Group II (control group) and Group III received propofol 4 microg/ml and rimifentanil 4 ng/ml, respectively. In Groups I and II, fluid expansion was performed with hetastarch 5 ml/kg within 20 minutes; hetastarch 10 ml/kg was used in Group III. Mean arterial pressure (MAP) and heart rate (HR) were recorded at 30-second-intervals for 5 minutes after the beginning of local infiltration. Simultaneously, the lowest and the highest MAP were recorded to calculate the mean maximum increase or decrease percent in MAP for all patients in each group. Data analysis was performed by chi(2) test, one-way analysis of variance, or one-way analysis of covariance.</p><p><b>RESULTS</b>Hemodynamic changes, particularly a decrease in MAP accompanied by an increase in HR at 1.5 minutes (P < 0.05), were observed in all groups. The mean maximum decrease in MAP below baseline was 14% in Group I, 24% in Group III and 26% in Group II. There were statistically significant differences between Group I and Groups II and III (P < 0.05). The mean maximum increase in MAP above baseline was 9% in Group I, 6% in Group III and 2% in Group II.</p><p><b>CONCLUSION</b>Relatively light general anesthesia can reduce the severity of epinephrine-induced hypotension more effectively than fluid expansion during FESS under general anesthesia.</p>

The safety and efficiency of fast track surgery in gastric cancer patients undergoing D2 gastrectomy / 中华外科杂志

<p><b>OBJECTIVE</b>To investigate the safety and efficacy of fast track surgery (FTS) management in gastric cancer undergoing D2 gastrectomy.</p><p><b>METHODS</b>Eighty gastric cancer patients undergoing D2 gastrectomy were recruited prospectively. Patients were assigned to receive FTS management (n = 40) or conventional perioperative care (n = 40). The FTS care included shorten preoperative fasting time, no nasogastric decompressing tubes and abdominal drainage placed, early postoperative oral feeding, multimodal analgesia, and early mobilisation. The length of postoperative hospital stay, medical cost, nutritional status, gut function, and postoperative complications in the two groups were recorded and compared.</p><p><b>RESULTS</b>FTS group was associated with a significantly shorter postoperative hospital stay compared with conventional care group [(5.6 +/- 1.3) d vs. (9.4 +/- 1.9) d, P < 0.05]. Medical cost was less [(18 620 +/- 2360) Yuan vs. (20 370 +/- 2440) Yuan, P < 0.05] and duration of intravenous infusion [(3.5 +/- 1.4) d vs. (5.8 +/- 1.9) d, P < 0.05] was also shorter. First passage of flatus was earlier in FTS group than in conventional care group [(4.3 +/- 0.4) d vs. (5.5 +/- 0.9) d, P < 0.05]. Loss of body weight in the postoperative period was less in FTS group [(3.2 +/- 0.8) kg vs. (4.3 +/- 1.6) kg, P < 0.05]. There was no difference in morbidity or mortality between the two groups.</p><p><b>CONCLUSION</b>FTS in D2 gastrectomy is safe and efficient, and it can shorten postoperative hospital stay and hasten return of gut function.</p>