A meta-analysis of the effects of academic interventions on academic achievement and academic anxiety outcomes in elementary school children.

Research has shown that academic anxiety can affect academic performance and emotional well-being. Despite previous research emphasizing the importance of understanding academic anxiety and indicating a strong association between academic performance and academic anxiety, no systematic reviews or meta-analyses have examined the effects of academic interventions on academic and anxiety outcomes. This article reports on a meta-analysis of studies examining academic interventions conducted with elementary students (kindergarten to Grade 6), in which both academic achievement and academic anxiety outcomes were reported. The systematic search yielded 13 studies comprising 1545 participants and revealed statistically significant differences favoring academic treatments over the control for academic achievement outcomes (g = 0.63, k = 11) but no statistically significant benefits for academic anxiety outcomes (g = -0.06, k = 11). The authors caution against drawing strong conclusions due to the heterogeneity in effects and the small number of studies in the extant literature.

Risk of HBV infection among male and female first-time blood donors born before and after the July 1986 HBV vaccination program in Taiwan.

BACKGROUND: In July 1984, Taiwan officially began a nationwide hepatitis B virus (HBV) vaccination program where only infants born to HBsAg-positive mothers were vaccinated free of charge until June 1986. However, from July 1986, all infants were vaccinated against HBV. The impact of the July 1986 HBV vaccination program on first-time blood donors has not been exhaustively studied. We, therefore, determined the risk of HBV among male and female first-time blood donors born before and after the July 1986 HBV vaccination program in Taiwan. METHODS: Initially, we recruited 857,310 first-time blood donors whose data were collected between 2013 and 2018 from 5 blood donation centers in Taiwan. However, we excluded donors with incomplete and outlying data (n = 12,213) and those born between July 1984 and June 1986 (n = 21,054). The final study participants comprised 9118 HBV positive and 814,925 HBV negative individuals. We divided the participants into two birth cohorts (born before and after July 1986) and assumed that those born before July 1986 were not vaccinated at birth while those born after July 1986 were vaccinated. RESULTS: The prevalence of HBV among those born before and after July 1986 was 4.53 and 0.25%, respectively. Individuals born after July 1986 had a lower risk of HBV than those born before July 1986. The adjusted odds ratio (OR), 95% confidence interval (CI) was 0.16, 0.13-0.19. Men had a higher risk of HBV than women (OR = 1.40, 95% CI = 1.34-1.47). The interaction between sex and birth date was significant (p-value = 0.0067). Stratification of participants by birth date revealed a higher risk of HBV in men compared to women in both birth cohorts. The OR, 95% CI was 1.47, 1.40-1.55 for those born before July 1986 but declined to 1.15, 1.02-1.29 for those born after July 1986. CONCLUSIONS: The risk of HBV was lower among those born after than those born before the July 1986 vaccination program. In both cohorts, the risk was high in men relative to women. The seemingly protective effect among those born after July 1986 was higher in women than men.

Device deformation and left pulmonary artery obstruction after transcatheter patent ductus arteriosus closure in preterm infants.

BACKGROUND: Transcatheter closure of patent ductus arteriosus (PDA) is an effective alternative to surgical ligation in preterm infants. However, data on device deformation and risk of left pulmonary artery (LPA) obstruction remain scant. This study describes the outcomes and complications of transcatheter closure of PDA in preterm infants weighing <2500 g. METHODS: Amplatzer Piccolo Occluder and Amplatzer Vascular Plug were used. Echocardiography was repeated at prespecified intervals. The device waist and length were assessed through lateral fluoroscopy immediately and at least 3 months after deployment. RESULTS: Fourteen infants were prospectively enrolled (mean procedural weight 1335 g, procedural age 24 days), and all procedures were successful. There was no obstruction of adjacent vessels immediately after deployment. At follow-up, three infants developed aortic coarctation, all of which resolved gradually. Obstruction of the LPA occurred in eight infants, with five being severe cases. Compared with the shape immediately after deployment, the devices became significantly more flattened and lengthened at follow-up in patients with LPA obstruction. This deformation was nonsignificant in infants without any LPA obstruction. The ratio of the device waist after deployment to the nominal waist (<0.75) was highly predictive of LPA obstruction and late device deformation. The cannulated femoral vein was patent compared with the contralateral side. CONCLUSIONS: Device deformation occurring late at follow-up is common and may be associated with LPA obstruction in preterm infants after transcatheter PDA closure. Meticulous device selection and implantation technique are crucial for minimizing the associated risks.

Joint effects of risk factors on adverse events associated with adult blood donations.

The process for blood donation is considered safe, but some adverse events have been reported. Risk factors for adverse events were assessed in this study.A retrospective case-control study was conducted to investigate the risk factors for adverse events after blood donation between 2010 and 2013. Variables such as gender, age, body mass index (BMI), donation status, donation volume, donation site, pre-donation systolic blood pressure (SBP), and pre-donation diastolic blood pressure were compared between donors with and without adverse events. Multiple logistic regression analysis was performed to assess the joint effects of age, gender, and donation status on adverse events.The incidence of adverse events among adult blood donations was 1287/1,253,678 (0.1%). On multivariate logistic regression analysis, blood donors aged <35 years (odds ratio [OR], 2.99, 95% confidence interval [CI], 2.57-3.48), of female gender (OR, 3.30, 95% CI, 2.62-4.15), and with first-time donor status (OR, 6.40, 95% CI, 5.17-7.93), donation of 500 mL (OR, 2.22, 95% CI, 1.83-2.69), predonation SBP <124 mm Hg (OR, 1.25, 95% CI,1.05-1.48) and BMI <24 kg/m (OR, 1.67, 95% CI, 1.42-1.96) were associated with increased likelihood of adverse event. Further analysis with joint effects method revealed that first-time female donors aged <35 years are associated with the highest odds of adverse events when compared with repeat male donors aged ≧35 years (OR, 100.57, 95% CI, 48.45-208.75).The findings of our study should prove useful in identifying donors at risk and planning appropriate strategies for the prevention of adverse effects.

The alteration of ferritin and transferrin saturation under body mass index and blood pressure in first-time and regular male blood donors in Taiwan.

Iron status, body mass index (BMI) and blood pressure (BP) are all important health indicators. In this study, ferritin and transferrin saturation levels and their correlations with BMI and BP were investigated in first-time and regular male blood donors in Taiwan. Serum ferritin and transferrin saturation values represented iron status of blood donors. Serum ferritin, serum iron, and total iron binding capacity (TIBC) were determined by chemiluminescent immunoassay sandwich method, timed-endpoint method, and turbidimetric method, respectively. Transferrin saturation was calculated as 100× serum iron/TIBC. Statistical analyses included 2-sample t test, chi-square test, Pearson correlation coefficient, and multiple linear regression. Comparisons of ferritin and transferrin saturation mean values with BMI, age, systolic blood pressure (SBP), diastolic blood pressure (DBP), and occupation were conducted. A total of 111 first-time donors and 1249 regular blood donors participated in this study. The ferritin and transferrin saturation mean values of regular male blood donors were lower than those of first-time male blood donors, but remained within the safe range. BMI was positively correlated with serum log ferritin, but not with transferrin saturation value in first-time and regular blood donors. First-time donors with BMI ≥24 kg/m and aged more than 40 years demonstrated 1.37-fold higher serum ferritin on average. Among regular donors, significant effects of BMI ≥24 kg/m and age >40 years were observed with 1.25- and 1.18-fold higher serum ferritin levels, respectively. First-time donors with SBP ≥120/DBP ≥80, ≥120/<80, and <120/≥80 mm Hg had on average 1.65-, 1.54-, and 2.59-fold higher serum ferritin levels than those with normal BP. Ferritin level was higher in BMI ≥24 kg/m subgroup than in BMI <24 kg/m subgroup among first time and regular male donors, but no difference was found in transferrin saturation values.Abnormal SBP/DBP was associated with increased ferritin level only in first-time male blood donors.

Matrix metalloproteinases 2 and 9 correlate with alanine aminotransferase and hepatitis C virus in blood donors.

BACKGROUND/AIMS: Matrix metalloproteinases 2 and 9 (MMP-2 and -9) have been suggested to play an important role in hepatitis and hepatic fibrosis. The aims of this study were to determine the plasma levels of enzyme activities of matrix metalloproteinases 2 and 9 in healthy and deferred blood donors. The relationships between activities of matrix metalloproteinases 2 and 9 and the level of alanine aminotransferase and the status of hepatitis B virus and hepatitis C virus infection were investigated. METHODOLOGY: This study included 51 healthy volunteer blood donors and 175 deferred blood donors. Of the deferred donors, 54 donors had levels of alanine aminotransferase > or = 45 IU/L, 99 donors were positive for hepatitis B virus surface antigen, and 32 donors were positive for antibodies against hepatitis C virus. Activities of matrix metalloproteinases 2 and 9 were measured by zymography using impregnated gel. RESULTS: Activity of matrix metalloproteinase 2 in deferred blood donors with elevated ALT was higher than that in healthy donors (331 +/- 139 vs. 266 +/- 122, p < 0.001). Further, activity of matrix metalloproteinase 2 was higher in HCV-infected donors than in healthy donors (319 +/- 97 vs. 275 +/- 133, p < 0.05). Matrix metalloproteinase 9 activity was also higher in deferred donors with HCV infection than in healthy donors (153 +/- 45 vs. 108 +/- 48, p < 0.001). CONCLUSION: These findings suggest that hepatitis C virus infection may upregulate the activities of matrix metalloproteinases 2 and 9 and that these matrix metalloproteinases may be linked to liver dysfunction.

Protection from oxidative damage using Bidens pilosa extracts in normal human erythrocytes.

Bidens pilosa (B. pilosa) is well known in Taiwan as a traditional Chinese medicine. The purpose of this study was to evaluate the ability of both the ethanol (EtOH) and ethylacetate/ethanol (EA/EtOH) extracts from the whole B. pilosa plant, to protect normal human erythrocytes against oxidative damage in vitro. It was determined that the oxidative hemolysis and lipid/protein peroxidation of erythrocytes induced by the aqueous peroxyl radical [2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH)] were suppressed by both EtOH (50-150 microg/ml) and EA/EtOH (25-75 microg/ml) extracts of B. pilosa in concentration- and time-dependent manners. B. pilosa extracts also prevented the decline of superoxide dismutase (SOD) activity and the depletion of cytosolic glutathione (GSH) and ATP in erythrocytes. These results imply that B. pilosa may have protective antioxidant properties.

Antrodia camphorata in submerged culture protects low density lipoproteins against oxidative modification.

Antrodia camphorata is well known in Taiwan as a traditional Chinese medicine. In this study, we have investigated the antioxidant properties of a fermented culture broth of Antrodia camphorata (FCBA) and the aqueous extracts of mycelia from Antrodia camphorata (AEMA) on the oxidative modification of human low-density lipoproteins (LDL), as induced by either copper sulfate (CuSO(4)) or 2,2'-azo-bis(2-amidinopropane) hydrochloride (AAPH). Under such oxidant stress, FCBA and AEMA appear to possess antioxidant properties with respect to oxidation of LDL in a time-and concentration-dependent manner, as assessed by inhibition of thiobarbituric acid-reactive substances (TBARS) formation, conjugated diene production, and cholesterol degradation of oxidized LDL. In addition, both FCBA and AEMA exhibited a remarkable ability to rescue the relative electrophoretic mobility and fragmentation of the Apo B moiety of the oxidized LDL. Furthermore, FCBA and AEMA effectively protected the endothelial cells from the damaging effects of the CuSO(4)-oxidized LDL. Our findings suggest that the antioxidant properties of Antrodia camphorata may also provide effective protection from atherosclerosis.

The prevalence of SEN virus infection in blood donors in Taiwan.

OBJECTIVES: To determine the prevalence of SENV infections among blood donors in central Taiwan and to clarify the relationship between these infections and elevated alanine aminotransaminase (ALT) values. METHODS: DNA was extracted from plasma of 200 blood donors and amplified by seminested PCR. RESULTS: For all donors, the prevalence of SENV-D was 32%, and of SENV-H was 30.5%. Prevalence of mixed SENV-D/H infection was 11.5% and of SENV-D and/or SENV-H (SENV-D/H) was 51%. Infections were not associated with age, gender, or raised ALT values. CONCLUSIONS: SENV-D and SENV-H infections are common among blood donors in central Taiwan but are unlikely to contribute to abnormal ALT values.