Objective: To systematically evaluate the effect of colostrum on immunoglobulin A (IgA) levels among premature infants, so as to provide the evidence for improving premature infants' health with colostrum feeding. Methods: Randomized controlled clinical trials (RCTs) or controlled clinical trials (CCTs) pertaining to the effect of colostrum and IgA levels among premature infants were retrieved in national and international databases from inception to September 30, 2022, including CNKI, Wanfang Data, PubMed and Web of Science. Standardized mean difference (SMD) was used as an effect index for meta-analysis. The robustness of the results was evaluated using sensitivity analysis, and the publication bias was evaluated using Begg's test, Egger's test and funnel plot. Results : A total of 650 publications were retrieved initially, and 10 studies were finally included, including 9 RCTs and one1 CCT, with 677 participants. Meta-analysis showed higher secretory salivary secretory IgA levels among premature infants with colostrum feeding than among controls (SMD=0.49, 95%CI: 0.08-0.89), and there were no significant differences between groups in terms of urinary secretory IgA levels (SMD=0.19, 95%CI: -0.39-0.77) or blood IgA levels (SMD=0.29, 95%CI: -0.01-0.59). Sensitivity analysis showed robustness of meta-analysis results, and no publication bias was examined. Conclusion Colostrum feeding may increase salivary secretory IgA levels among premature infants; however, it has no effect on urine salivary secretory IgA levels or blood IgA levels.

Objective:To observe the effects of ischemic postconditioning (I-postC)on the lung injury after limb ischemia reperfusion (LIR)in the rats,and to investigate the protective effect and the possible mechanisms. Methods:24 Wistar rats were randomly divided into control group, ischemia-reperfusion group (IR group)and I-postC group (n=8 ). Referring to routine method in our department, the model rats which underwent 4 h ischemia and 4 h reperfusion of hind limbs were made.In control group,the rubber band around the limb was loose and the blood flow was not blocked. In I-postC group, before reperfusion, ischemia 5 min and reperfusion 5 min were performed in the rats,repeated for 3 times and then perfusion 4 h was taken,The blood and lung tissue from every rat were taken accurately. The percentages of CD1 8 positive cells in peripheral blood,the levels of soluble intercellular adhesion molecule-1 (sICAM-1)and P-selectin in plasma,the myeloperoxidase (MPO)activities in lung tissue,the levels of intercellular adhesion molecule-1 (ICAM-1)and P-selectin in lung tissue of the rats in various groups were detected. The partial pressure of oxygen (PaO2 ) and partial pressure of carbon dioxide (PaCO2 )were measured.The morphological changes of lung tissue under light and electron microscopes were observed.Results:Compared with control group,the percentage of CD18 positive cells and the levels of sICAM-1 and P-selectin of the rats in IR groups were increased (P<0.01);PaO2 and PaCO2 were decreased significantly;the MPO activity in lung tissue was also significantly increased (P<0.01).The HE staining results showed lung interstitial vascular dilation, congestion, PMN infiltration, the increased gap blood vessel, alveolar septal thickening,alveolar exudation, bronchial epithelial cell shedding and necrosis of the rats in IR group. Compared with IR group,the values of biochemical indicators mentioned above were decreased obviously (P<0.01);PaO2 and PaCO2 were increased significantly (P<0.01);the activities of inflammatory factors in plasma and lung tissue were decreased (P < 0.01 ); the pathological changes of lung damage were improved significantly. Conclusion:I-postC can reduce the lung injury after LIR in the rats,and the mechanism may be related to inhibiting the inflammatory reaction.

Objective To observe the effects of ischemic postconditioning (I-postC) on lung injury after limb ischemia reperfusion (LIR) in rats, and to investigate the protective effect and the mechanisms. Methods Twenty-four Wistar rats were divided into three groups:control group (group Control), ischemia-reperfusion group (group IR) and ischemic postcondi?tioning group (group I-postC). Referring to routine method in our department, the model rats underwent 4-hour ischemia and 4-hour reperfusion of hind limbs were made. In group Control, the rubber band around the limb was loose,which did not block the blood flow. Rats in group I-postC were given repeated 3 times of 5 min ischemia-5 min reperfusion, and then did perfusion 4 h before reperfusion. The blood and lung samples were collected for detecting arterial gas of partial pressure of oxygen [p(O2)] and partial pressure of carbon dioxide [p(CO2)]. The plasma and lung tissue levels of malondialdehyde (MDA), superoxide dismutase (SOD) and xanthine oxidase (XOD) were detected. The morphological changes of lung tissue were ob?served under light microscope and electron microscope. Results It was found that after suffering from ischemia-reperfu?sion, levels of p(O2) and p(CO2) decreased significantly. The activity of SOD in plasma and lung tissues decreased, but XOD and MDA increased significantly (P<0.05). With microscope, lung interstitial vascular dilation, infiltration of neutrophils, the width of the alveolar space, alveolar septal thickening and alveolar exudate were found. Compared with IR group, it was found that p(O2) and p(CO2) increased significantly in group I-postC. The activity of SOD in plasma and lung tissues in?creased, but XOD and MDA decreased significantly(P<0.05). The mild damage of pathological changes were found. Conclu?sion Ischemic postconditioning can reduce the lung injury after limb ischemia reperfusion in rats, which may be related to the inhibition of lipid peroxidation.

Objective To compare the mRNA expressions of interleukin (IL)-17 and IL-23 in peripheral blood of patients with psoriasis vulgaris versus healthy individuals,assess the relationship of these parameters with psoriasis area and severity index (PASI) score,and to investigate the therapeutic mechanisms of total glucosides of peony (TGP) for psoriasis vulgaris.Methods Fifty patients with psoriasis vulgaris and 40 healthy individuals were enrolled in this study.Of these patients,42 were treated with TGP of 600-900 mg twice a day for 8 weeks.Blood samples were obtained from all the healthy individuals,50 patients before treatment,42 patients after 4-week treatment,and 23 patients after 8-week treatment.Real-time fluorescence-based quantitative reverse transcription PCR (RT-PCR) was used to determine the mRNA expression levels of IL-17 and IL-23 in the blood samples.The severity of psoriasis was evaluated using PASI score before and after the treatment.Statistical analysis was done by t test,rank sum test,and Pearson correlation analysis using the SPSS16.0 software.Results The IL-17 and IL-23 mRNA expression levels (given in △Ct value) in the patients before treatment were significantly higher than those in the healthy controls (IL-17,-5.32 ± 0.80 vs.2.79 ± 0.76,t =47.71,P ＜ 0.05; IL-23,-5.43 ± 0.68 vs.-3.77 ± 0.86,t =10.38,P ＜ 0.05),and positively correlated with the PASI score (r =0.61,0.52 respectively,both P ＜ 0.05).A significant decrease was observed in the mRNA expression levels of IL-17 and IL-23 as well as PASI score in the 42 patients after 4-week treatment with TGP compared with those before treatment(IL-17,-2.24 ± 0.61 vs.-5.30 ± 0.78,t =20.40,P ＜ 0.05; IL-23,-1.97 ± 0.74 vs.-5.44 ± 0.68,t =21.69,P ＜ 0.05; PASI,5.8 ± 2.7 vs.9.4 ± 4.2,t =4.68,P ＜ 0.05),and in the 23 patients after 8-week treatment compared with those after 4-wek treatment(IL-17,-1.51 ± 0.78 vs.-2.21 ± 0.59,t =3.50,P ＜ 0.05; IL-23,-1.27 ± 0.81 vs.-1.89 ± 0.72,t =2.70,P＜ 0.05; PASI,3.8 ± 1.8 vs.7.3 ± 2.5,t =5.47,P＜ 0.05).Conclusions It seems that both IL-17 and IL-23 are involved in the pathogenesis of psoriasis vulgaris,and TGP treatment can reduce the mRNA expression levels of IL-17 and IL-23 as well as PASI score in patients with psoriasis vulgaris.

Objective To investigate the effect of splenectomy on infarct volume in middle cerebral artery occlusion in focal cerebral ischemia rats and its possible mechanisms.Methods Eighteen male Sprague-Dawley rats were randomly divided into spleneetomy,sham splenectomy,and control groups (n =6 in each group).A model of middle cerebral artery occlusion (MCAO) was induced by the intraluminal suture method 2 weeks after spleneetomy.The rats were decapitated and their brains were removed after 24 hours.The infarct volume was measured with Nissl body staining The number of macrophages in ischemic cortex was detected with immunofluorescence staining Results The infarct volume in the splenectomy group (34.93％ + 3.23％ )was significantly smaller than that in the sham splenectomy group (74.33％ + 2.36％ ; q =39.399,P ＜ 0.001 ) and the control group (77.30％ + 2.62％ ; q =42.369,P ＜ 0.001 ).However,there was no significant difference between the sham splenectomy group and the control group (q =2.970,P =0.082).The number of macrophages of the ischemic cortex in the splenectomy group (3.4 ± 1.07/per high power field) was significantly less than that in the sham splenectomy group (20.7±4.37/per high power field; q =17.300,P＜0.001) and the control group (18.87 ±4.17/per high power field; q =15.467,P ＜0.001).However,there was no significant difference between the sham splenectomy group and the control goup (q =1.833,P =0.384).Conclusions Splenectomy may reduce the infarct volume by reducing the number of macrophages in ischemic corticalregion.

Objective To master the area scope and epidemic situation of Kaschin-Beck disease (KBD) in Harbin,and to accumulate data and information for the midterm examination and evaluation of the 12th Five-Year Plan of the National Endemic Disease Prevention and Control.Methods In the original 10 counties (districts,cities) of Harbin with KBD,2 surveys were carried out from 2011 to 2015,5 townships were extracted in each county (district,city),3 villages were extracted in each township,clinical investigation and X-ray examination of 7-12 years old children were carried out;according to the criteria for Diagnosis of Kaschin-Beck Disease,a clinical survey was conducted in 2013 in the 10 counties (districts,cities) with KBD.According to the KBD prevalence and X-ray examination results in each county (district,city),reference to Criteria for Control of Kaschin-Beck Disease Areas,Criteria for Delimitation and Classification of Kaschin-Beck Disease Area,Evaluation Methods for Endemic Diseases Control and Elimination,the types of the disease areas,control and eliminating situation were determined;organization and management of the control and prevention measures were evaluated.Results Currently,there were 10 counties (districts,cities),373 villages,6 969 patients with KBD in Harbin.According to the KBD area division and control standard,369 villages were light KBD areas (prevalence of clinical degrees Ⅰ and above patients or detection rate of 7-12 children by X-ray for local residents ≤ 10％) and 4 villages were medium KBD areas (prevalence of clinical degrees Ⅰ and above patients or detection rate of 7-12 children by Xray for local residents ＞ 10％-≤20％).Clinical census showed that the people under 20 years had no cases with degree Ⅰ and above in each village,X-ray detection rate was 0 in 7-12 years old children,in line with the standards of history KBD areas.There were no clinical KBD cases in 7-12 years old children in all villages of KBD areas,positive detection rate of children by X-ray was 0 in the sampling KBD area villages,in line with the standards of eliminate technical standards of KBD area village.The management index scores of KBD were from 85 to 95 points in every area county (district,city),getting to the eliminating requirement which was more than 85 points.Conclusion The KBD areas have narrowed down and prevalence has declined significantly in Harbin,which has reached the area eliminating standards and the index of basically eliminating KBD proposed by the 12th Five-Year Plan.

Objective To evaluate the diagnostic value of ultrasonic elastography (UE) in benign and malignant thyroid nodules by Meta analysis. Methods Computer was used to search China national knowledge infrastructure(CNKI), Wanfang database, and relevant Chinese articles about UE in assessing diagnostic accuracy of benign and malignant thyroid nodules were collected. According to the diagnostic test criteria recommended by Cochrane Screening and Diagnostic Test Group, the literatures were screened and feature information was included in the study. The quality evaluation tool of diagnostic test accuracy(QUADAS-2) was used to assess the quality of the literatures; Meta analysis was performed with Meta-DiSc 1.4 software, and receiver operating characteristic curve(SROC) was drawn. Results According to the key words, two hundred and thirty-one articles were retrieved initially, and finally 16 articles were included after screening; the quality of five articles was grade A; eight was grade B; and three was grade C. Sixteen articles contained 1 325 patients with 1 641 thyroid nodules. The pooled sensitivity and specificity were 0.87 [95%confidence interval (CI): 0.84 - 0.89] and 0.84 (95%CI: 0.82 - 0.86), respectively; the pooled positive and negative likelihood ratios were 5.85 (95%CI:4.47-7.65) and 0.17(95%CI:0.13 - 0.21), respectively; the area under the curve of SROC was 0.93, standard error(SE) =0.01. Conclusion The results of meta-analysis suggest that UE has high value in the diagnosis of benign and malignant thyroid nodules.

Objective To investigate the efficacy ,safety and compliance of mesalazine sustained‐release (SR) granules taking once daily or multi‐times daily in the treatment of patients with mild to moderate active ulcerative colitis .Methods Sixty patients with mild to moderate active ulcerative colitis were divided into group A ,B and C with 20 patients in each group .Group A received mesalazine SR granules 4 g once daily ,Group B with 2 g each time and twice daily ,Group C with 1 g each time and four times daily . The total course was eight weeks . The vital signs ,Mayo score ,compliance and adverse effects of patients were monitored at 0 ,4th ,8th weeks .At 0 and 8th weeks ,colonoscopy were performed . The parameters of efficacy assessment were clinical complete remission rate , clinical remission rate , efficacy rate ,mucosal healing rate ,remission time and safety .The F test ,t test or Chi‐square test was performed for comparison among groups .Results The clinical complete remission rate of group A ,B and C was 20% (4/20) ,10% (2/20) and 10% (2/20) ,respectively .The clinical complete remission rate was 70% (14/20) ,65% (13/20) and 70% (14/20) ,respectively .The efficacy rate was 95% (19/20) ,85%(17/20) and 90% (18/20) ,respectively .The mucosal healing rate was 70% (14/20) ,60% (12/20) and 50% (10/20) ,respectively .The side effects rate was 20% (4/20) ,15% (3/20) and 20% (4/20) .There was no significant difference between groups (all P > 0 .05) .The remission time of group A and B was (15 .4 ± 3 .7) days and (15 .6 ± 2 .9) days ,which were both shorter than that of group C (18 .4 ± 3 .6) days ,and the differences were statistically significant (t= 2 .661 and 2 .710 ,both P< 0 .05) .There was no significant difference among three groups in gender ,disease course , severity , location and clinical remission rate of sub‐groups .Conclusions The efficacy and safety of mesalazine SR granules taking once daily or multi‐times daily are similar in the treatment of patients with mild to moderate active ulcerative colitis .Once daily have better compliance than other regimens .

Objective To observe insulin resistance (IR) in non-diabetic peritoneal dialysis (PD) patients,and analyze its related factors.Methods The non-diabetic PD patients who had been on stable PD at least three months were eligible to enroll.The patients were measured for their height,weight,waist to hip ratio,fasting glucose,fasting insulin,lipids and other biochemical indicators,dialysis adequacy indicators in August 2012,and divided into two groups depended on median HOMA-IR in August 2012.Results A total of 56 patients were enrolled and divided into two groups according to median HOMA-IR,including high IR group (HOMA-IR≥ 1.79,n=29) and low IR group (HOMA-IR ＜ 1.79,n=27).Compared to low IR group,high IR group were older [(57.9±14.2) years vs (48.7±14.5) years],had higher daily dialysate glucose load [(138.7±28.5) mmol/L vs (114.0± 21.5) mmol/L],higher waist-to-hip ratio [(0.91±0.08) vs (0.86±0.07)],higher BMI [(23.0±3.0) kg/m2 vs (21.2±3.1) kg/m2],higher triglycerides [(2.51±1.36) mmol/L vs (1.42±0.48) mmol/L],lower high-density lipoprotein cholesterol [(1.00±0.27) mmol/L vs (1.23±0.32) mmol/L],and lower Kt/V [(1.74±0.37) vs (2.08±0.56)].Multivariate logistic regression showed that age (β=0.122,P=0.033),triglycerides (β=1.798,P=0.030) and daily dialysate glucose load (β=0.094,P=0.031) associated with the degree of insulin resistance.Conclusion More dialysate glucose exposure is a risk factor of the occurrence of insulin resistance in non-diabetic patients with peritoneal dialysis.

Objective In order to accumulate data for the final evaluation and acceptance of the Twelfth Five-Year Plan of National Endemic Disease Prevention and Control,we investigated the endemic scopes and basic situation of Keshan disease (KD) in Harbin.Methods According to the Criteria for Diagnosis of Keshan Disease (WS/T 210-2011),we conducted clinical survey of KD prevalence in 10 KD endemic counties in Harbin in 2013.2011-2015,we detected and searched for cases in 10 ward counties of Keshan disease.According to the Delimitation and Classification of Keshan Disease Areas and the Evaluation of Endemic Disease Control and Elimination,we determined the regional type,the situation of control and elimination of the disease,at the same time all KD patients were positioned by global positioning system (GPS).Results There were 2 KD endemic counties,12 endemic townships,and 37 KD patients in Harbin.All 12 townships were the light endemic regions of KD.Other townships were conformed to be the history regions with KD.The management index scores of KD reached the elimination requirements which were more than 85 points in every region county (city).Ten region counties got to technical standards for KD elimination.Harbin basically reached the index of KD elimination.The GPS satellite positioning of KD patients were concentrated in the 45.1-45.5 degrees north latitude,and 127.7-128.3 degrees east longitude.Conclusion The regions of KD endemic areas have narrowed down and the prevalence rate has declined significantly in Harbin,which have reached the basic elimination standards of KD by the 12th Five-Year Plan.