Background: Chronic cardiac dysfunction may develop after administration of aggressive chemotherapy, sometimes leading to development of congestive heart failure (CHF). Recently, N-terminal pro-B-type natriuretic peptide (NT-proBNP) was implicated as a marker of CHF. In this study we evaluated the predictive role of NTproBNP in patients treated with high-dose chemotherapy (HDC). Methods: NT-proBNP was measured after 62 chemotherapy treatments in 52 patients affected by aggressive malignancies. Blood samples were drawn before the start of HDC, at the end of HDC administration, and 12, 24, 36, and 72 h thereafter. In these patients, echocardiograms were performed regularly during a 1-year followup. Results: Seventeen patients (33%) had persistently increased NT-proBNP, 19 patients (36%) had only transient increases (concentrations went back to baseline at 72 h), and 16 (31%) had no increases [mean (SD) values
Background Gram-negative bacteremia (GNB) is a major cause of illness and death after hematopoietic stem cell transplantation (HSCT), and updated epidemiological investigation is advisable. Methods We prospectively evaluated the epidemiology of pre-engraftment GNB in 1118 allogeneic HSCTs (allo-HSCTs) and 1625 autologous HSCTs (auto-HSCTs) among 54 transplant centers during 2014 (SIGNB-GITMO-AMCLI study). Using logistic regression methods. we identified risk factors for GNB and evaluated the impact of GNB on the 4-month overall-survival after transplant. Results The cumulative incidence of pre-engraftment GNB was 17.3% in allo-HSCT and 9% in auto-HSCT. Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa were the most common isolates. By multivariate analysis, variables associated with GNB were a diagnosis of acute leukemia, a transplant from a HLA-mismatched donor and from cord blood, older age, and duration of severe neutropenia in allo-HSCT, and a diagnosis of lymphoma, older age, and no antibacterial prophylaxis in auto-HSCT. A pretransplant infection by a resistant pathogen was significantly associated with an increased risk of posttransplant infection by the same microorganism in allo-HSCT. Colonization by resistant gram-negative bacteria was significantly associated with an increased rate of infection by the same pathogen in both transplant procedures. GNB was independently associated with increased mortality at 4 months both in allo-HSCT (hazard ratio, 2.13; 95% confidence interval, 1.45–3.13; P <.001) and auto-HSCT (2.43; 1.22–4.84; P = .01). Conclusions Pre-engraftment GNB is an independent factor associated with increased mortality rate at 4 months after auto-HSCT and allo-HSCT. Previous infectious history and colonization monitoring represent major indicators of GNB. Clinical Trials registration NCT02088840.
A causal link between human papillomavirus (HPV) infection and cervical cancer has been well established (2,12,14,23). A large number of HPV genotypes have been identified, and the mucosal HPV strains are divided into "high-risk" (HR) and "low-risk" (LR) categories on the basis of their association with cervical lesions. The HR types are more frequently found in premalignant or malignant lesions, LR types are found in benign lesions such as condylomata acuminata (18). Infection by HR HPV types has been demonstrated in almost 100% of cervical carcinoma (29), and it has been recently shown that persistent infection with the same genotype strongly increases the risk of developing high-grade preinvasive disease (11).The detection of HR HPV in cervical samples has been proposed to improve the efficacy of cervical carcinoma screening programs and to triage women with ambiguous or borderline cervical smears (1). Women with persistent HR HPV positivity have a clearly enhanced risk of developing a premalignant lesion and, hence, may be more closely monitored (3,15). Moreover, HR HPV testing may be associated with Pap smear to monitor women who have been treated for high-grade cervical intraepithelial neoplasia (CIN) (16,30). Several studies have revealed that HPV testing yields a high negative predictive value, approaching 100%, for high-grade CIN lesions and cervical carcinomas (lesions Ն CIN3) (21,22,31).Testing for HPV relies on the detection of viral DNA. The only test currently approved by the U.S. Food and Drug Administration for the detection of HPV DNA is the Hybrid Capture 2 (HC2) system (Digene Corporation, Gaithersburg, Md.). The HC2 assay is a ready-to-use test for routine diagnostics and uses a liquid hybridization format followed by signal amplification to detect 13 HR HPV types (i.e., genotypes 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, and 68) by means of an RNA cocktail probe; the test does not distinguish individual HPV types. The sensitivity is approximately 4,700 viral copies/ml of cervical sample suspension. The evaluation of its laboratory performance has shown that HC2 is a reliable and reproducible test (4,6,8); both characteristics are fundamental for a test with potential widespread use. Different laboratories have also used many PCR-based methods. PCR methods are considered the "gold standard" for analytical sensitivity to detect infectious organisms, including HPV. However, PCRs for HPV detection are currently performed as "home brew" methods, lack standardization, show different sensitivity and specificity, are time-consuming, and require a demanding job for the laboratory. In the last years, some studies have compared the performance of HC2 and PCR, showing a good level of agreement between the two methods (19, 28).
Background: Increased cardiac troponin I (cTnI) in patients treated with high-dose chemotherapy (HDCT) for aggressive malignancy has been proposed as an early marker of late HDCT-induced cardiac dysfunction. We investigated whether cTnI measured by the Stratus CS (Dade Behring) would allow detection of minimal cTnI increases in patients treated with HDCT. Methods: Plasma cTnI concentrations were determined in 179 consecutive patients before HDCT, at the end of the treatment, and after 12, 24, 36, and 72 h. Cardiac function was explored by echocardiography, and left ventricular ejection fraction (LVEF) was recorded during follow-up. The greatest variation in LVEF from the baseline value was used as a measure of cardiac damage. Results: In 99 healthy volunteers, the 99th percentile was at 0.07 g/L. On the basis of ROC curve analysis (area under the curve, 0.89), a cutoff of 0.08 g/L was chosen (sensitivity, 82%; specificity, 77%). cTnI >0.08 g/L occurred in 57 patients (32%) with echocardiographic monitoring revealing a mean decrease in LVEF of 18%. In comparison, the group of cTnI-negative patients had a mean decrease in LVEF of 2.5% (P <0.001). Conclusions: Plasma cTnI, as measured with the Stratus CS, can detect minor myocardial injury in patients treated with HDCT.
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