ABSTRACT
【Objective】 To study the impact of the storage duration of suspendedred blood cells(RBCs)on blood transfusion for patients with aplastic anemia. 【Methods】 76 occasions of blood transfusions for 36 patients with aplastic anemia, admitted to our hospital between 2017~2019, were observed. The effects of patient and donordemographics as well as storage duration on the efficacy of RBCs transfusion were analyzed using linear regression. 【Results】 Multivariate linear regression analysis revealed that the efficacy of RBCs transfusion was negatively correlated with the patient′s weight (P0.05) and -1.904 (95% CI: -3.750~-0.057; P<0.05) g/L, respectively, presenting a gradually decreasing trend. 【Conclusion】 Longer storage of RBCs has an impact on the efficacy of blood transfusion in patients with aplastic anemia.
ABSTRACT
Objective To investigate the effects of 17-methoxyl-7-hydroxy-benzene-furabcgakcone( MHBFC ) on isoproterenol-induced ventricular remodeling in mice. Methods Isoproterenol(ISO)was given subcutaneously(1 mg·kg-1, twice per day for 7 d)to induce ventricular remodeling in mice. Mice were divided into normal control group,model group, captopril group,MHBFC low and high-dose groups. 65 mg·kg-1 captopril was given by intragastric administration in captopril group,2. 5,5. 0 mg·kg-1 MHBFC were given by intravenous injection in MHBFC low and high-dose groups. At the end of the 7th day,the hearts of the mice were weighted,and myocardial hypertrophy index was expressed as heart weight/body weight, double kidneys weight/body weight and lung weight/body weight( HW/BW,KW/BW and LW/BW). Colorimetric method was used to determine the content of hydroxyproline( Hyp)in heart,the activity of superoxide dismutase( SOD)and the content of malondialdehyde( MDA)in serum. The histological changes were observed by HE and Masson’s staining,the changes of cross section area( CSA),collagen volume fraction,( CVF)and perivascular circumferential collagen area( PVCA)were determined. Results Compared with the model group,MHBFC potently inhibited cardiomyocyte hypertrophy,decreased the HW/BW, KW/BW and LW/BW,improved cardiac pathology changed,increased the of activity SOD,decreased the content of MDA in serum and the content of Hyp in heart tissue(P﹤0. 01 or P﹤0. 05),decreased the CVF and PVCA(P﹤0. 01). Conclusion MHBFC possesses protective effects against ISO-induced ventricular remodeling in mice,which may be related to its actions in reducing the oxidative stress and improving the antioxidant activity of the body.