ABSTRACT
OBJECTIVE@#To compare the plasma components of frozen plasma (FP) and fresh frozen plasma (FFP).@*METHODS@#Twenty samples of FP and 20 samples of FFP from Beijing Red Cross Blood Center were randomly selected. Immediately after plasma melting, 12 plasma components including coagulation factor, fibrinolytic system and anticoagulation protein were detected, including activated partial thromboplastin time (APTT), prothrombin time (PT), coagulation factor Ⅷ (FⅧ) activity, coagulation factor Ⅴ (FⅤ) activity, fibrinogen(FIB) level, ADAMTS-13 activity, von Willebrand factor(vWF) activity, D-dimer (D-dimer, DD), fibrin degradation products (FDP), antithrombin (AT), protein C (PC), and protein S (PS). All these coagulation components between the two types of plasma were compared and analyzed.@*RESULTS@#Compared with FFP, APTT in FP was significantly prolonged(t=3.428, P0.05).@*CONCLUSION@#FP can substitute FFP in the treatment of some diseases, although it is lack of some coagulation factors and anticoagulation protein.
Subject(s)
Humans , Beijing , Blood Coagulation , Blood Coagulation Factors , Blood Coagulation Tests , PlasmaABSTRACT
<p><b>BACKGROUND</b>Klebsiella pneumoniae (KP) is a pathogen commonly causing nosocomial infection. Carbapenem-resistant KP (CRKP) is more resistant to multiple antimicrobial drugs than carbapenem-susceptible KP (CSKP) isolates. The aim of the present study was to identify the risk factors for CRKP infection and the predictors of mortality among KP-infected adult patients.</p><p><b>METHODS</b>Patients with CRKP and CSKP infection were categorized as the case group and control group, respectively, and we conducted a 1:1 ratio case-control study on these groups. The CRKP isolates collected were tested for antimicrobial susceptibility and presence of KP carbapenemase (KPC) gene. Clinical data were collected to identify risk factors for CRKP infection and mortality of KP infection. Risk factors were analyzed under univariable and multivariable logistic regression model.</p><p><b>RESULTS</b>The independent risk factors for CRKP infection were admission to Intensive Care Unit (odds ratio [OR]: 15.486, 95% confidence interval [CI]: 3.175-75.541, P < 0.001); use of β-lactams and β-lactamase inhibitor combination (OR: 4.765, 95% CI: 1.508-15.055, P = 0.008); use of cephalosporins (OR: 8.033, 95% CI: 1.623-39.763, P = 0.011); fluoroquinolones (OR: 6.090, 95% CI: 1.343-27.613, P = 0.019); and indwelling of urethral catheter (OR: 6.164, 95% CI: 1.847-20.578, P = 0.003). However, older age (OR: 1.079, 95% CI: 1.005-1.158, P = 0.036), Charlson comorbidity index (OR: 4.690, 95% CI: 2.094-10.504, P = 0.000), and aminoglycoside use (OR: 670.252, 95% CI: 6.577-68,307.730, P = 0.006) were identified as independent risk factors for patient deaths with KP infection. The mortality of CRKP group was higher than that of the CSKP group. KPC gene did not play a role in the CRKP group. CRKP mortality was high.</p><p><b>CONCLUSION</b>Implementation of infection control measures and protection of the immunefunction are crucial.</p>
ABSTRACT
BACKGROUND: In early drug-discovery research, understanding the tissue distribution of drug at the site of action can help to predict the toxicity, efficacy and exposure level of the drug. The bottleneck of tissue analysis by LC-MS/MS is the time-consuming homogenization step. RESULTS: Both mechanical and enzymatic techniques for mouse tissue homogenization were evaluated, which included bead beater, polytron and enzymatic digestion. Brain, bone marrow, kidney, spleen and liver tissues can be homogenized effectively using the bead beater alone. Lung and heart tissues were best treated with collagenase first and then homogenized by the bead beater. CONCLUSION: Homogenization conditions for seven mouse tissues have been evaluated and optimized. These findings will expedite the preparation of tissue samples for analysis.
