共查询到20条相似文献，搜索用时 46 毫秒
1.
Li-xin Jiao Jiang-hong Yu Xiao-li Yu Lin Chen Yu Han Fan Yang 《Transfusion and apheresis science》2017,56(2):223-225
Objective
To identify the precise ABO blood type subgroups with genotyping.Method
We screened ABO blood type from voluntary blood donors in our blood collection center. Samples were first examined with a routine serological method. Samples with ambiguous results were further examined with genotyping to identify ABO subgroups.Results
Two samples identified as AweakB by serology were considered to be A/B and B/B by PCR-SSP. However, the gene sequencing results revealed the precise subgroup to be CisAB01/B101 and CisAB05/B101, respectively.Conclusion
It may be difficult to identify non-typical AB patients with a routine serological method. Genotyping is a more precise method to identify blood subgroups. 相似文献2.
Lishi Wang Yanhong Cao Mingji Ren Amei Chen Jinglin Cui DiaJun Sun Weikuan Gu 《Clinical therapeutics》2017,39(1):34-54
Purpose
Understanding how sex impacts the efficacy of anticancer agents is a crucial step toward personalized and precision medicine. This review and meta-analysis evaluated sex differences in hazard ratios (HRs) of progression-free survival and overall survival in representative Phase III clinical trials of non–small-cell lung cancer (NSCLC).Methods
Data were extracted from 24 large-scale clinical trials that included 12,000 male and 7000 female patients. The data were examined for HR differences between subgroups by sex, smoking status, and age, and for potential sex–smoking status, sex–age, and sex–drug interactions, during cancer treatment.Findings
Summarized information revealed variations in the influences of sex, smoking status, and age on the efficacy of drugs used for the treatment of NSCLC. The male and female subgroups had different HR values. Smoking status, age, and the percentage of female patients in a treatment group had no influence on the sex HR. The sex difference was supported by a set of data collected from all journals.Implications
The findings from this meta-analysis are important for assessing potential toxicity during drug treatment in both sexes. The outcomes measures of a drug in clinical application should be specified by subpopulation, such as males versus females, as a first step in personalized medicine. 相似文献3.
Sheila F. O’Brien Qi-Long Yi Wenli Fan Vito Scalia Mindy Goldman Margaret A. Fearon 《Transfusion and apheresis science》2017,56(3):389-391
Background
Residual risk is estimated as the product of the incidence and the infectious window period, the time during which a blood donation could be infectious but the assay may not detect it. In 2011 nucleic acid multiplex testing (MPX) was implemented in 6 unit minipools (previously 24 unit minipools). MPX also included hepatitis B (HBV) NAT for the first time (complementing HBsAg screening) in addition to HIV-1 and hepatitis C (HCV) as before. We aimed to estimate window period risk-day equivalents for MPX, and the residual risk of viral infections in blood donations updated to reflect current incidence and testing.Methods
Transmissible disease conversions of repeat donations to Canadian Blood Services within the three-year period 2012–2014 divided by person-years estimated incidence for HIV, HCV and HBV (adjusted for transient viremia). Window period risk-day equivalents for MPX were estimated using a published method. Residual risk was the product of incidence and window period risk-day equivalents. 95% confidence intervals were estimated using Monte Carlo simulation of the window period risk-day equivalents and the incidence density 95% confidence intervals.Results
The incidence rate per 100,000 person years for HIV was 0.28, HCV 1.0 and HBV 0.26. The residual risk of HIV was 1 per 21.4 million donations, HCV 1 per 12.6 million donations and HBV 1 per 7.5 million donations.Conclusion
The residual risk of infection is very low, similar to 2006–2009. The safety benefit of further shortening of the infectious window period is below the threshold to quantify. 相似文献4.
Akira Iwama Junichi Hirayama Masayuki Nogawa Masayuki Shiba Masahiro Satake Shigeru Takamoto Kenji Tadokoro 《Transfusion and apheresis science》2017,56(2):241-244
Background
Washed platelet concentrate (WPC) is prepared manually in general, but automated preparation is desirable to minimize variation in the WPC quality and enhance WPC production. Recently, the software was improved for an automated cell processor (ACP) to control all processes of WPC preparation. M-sol and BRS-A, which are mixtures of medical solutions, are widely used for WPC preparation with a manual method in Japan. In this study, we prepared WPC suspended in M-sol (WPC-M) or BRS-A (WPC-B) with the ACP, and compared their in vitro properties during 7-day storage.Study design and methods
PC was divided into two equal aliquots for WPC-M and WPC-B. A divided PC, medical solutions and disposable materials were set in the ACP, and it was started to prepare WPC-M or WPC-B on Day 0. Prepared WPC was stored on a flatbed shaker until Day 7.Results
The pH of WPC-M and WPC-B was maintained above 6.8 during the 7-day storage. The differences in aggregation (%), HSR (%), P-selectin expression, GPIbα expression, and phosphatidylserine expression between WPC-M and WPC-B were minimal until Day 3.Conclusion
The in vitro properties of WPC-B are not markedly different from those of WPC-M until Day 3. 相似文献5.
Ryan Jajosky Mark Floyd Thomas Thompson James Shikle 《Transfusion and apheresis science》2017,56(4):591-594
Background
The PLASMIC score was recently described as a convenient tool for predicting ADAMTS13 activity ≤10% in patients with possible thrombotic thrombocytopenic purpura (TTP), while awaiting the results of this send-out test. The purpose of this study was to validate the PLASMIC score at our University Medical Center.Methods
Apheresis records were reviewed from 2008 to 2017 to identify patients who received plasma exchange (PLEX) for suspected TTP. The ADAMTS13 activity and PLASMIC scoring criteria were recorded, and the PLASMIC score was calculated.Results
Of the 41 patients identified, 20 met inclusion criteria, of which 7 patients had ADAMTS13 activity ≤10%. Intermediate and high PLASMIC scores had 100% sensitivity, 46.2% specificity, 50% positive predictive value (PPV), and 100% negative predictive value (NPV).Conclusion
These results are consistent with the original validation study of the PLASMIC score, supporting the efficacy of the PLASMIC score and validating its use at our institution. 相似文献6.
Sara Alfieri 《Transfusion and apheresis science》2017,56(5):723-731
Background
Scientific literature on blood donation is prevalently concentrated on adults, leaving out adolescents almost completely. While the latter represents “ideal” candidates, they constitute, however, the segment of the population least present among blood donors.Objectives
The present work, composed of two studies, proposes looking into the representations that the adolescents have of blood donation and give voice to the motivations that could persuade them to becoming donors once they reach the legal age for donation. Study I aims to investigate adolescents’ representations about the world of blood donation. Study II aims to investigate a) the underlying motivations for blood donations and b) the relationship between motivations and propensity to donate.Materials/Methods
This paper is based on a mixed methods research design. In Study I, five focus groups were conducted comprising a total of 25 adolescents; for Study II, a self-report questionnaire was administered to 285 adolescents.Results
Study I reveals a lack of information for everything regarding donation, something that produces fear, false beliefs, and an idealized image of the donor.Study II shows that for males, social motivations are fundamental while ego-protective motivations are deterrents, and that females are most impacted by understanding.Conclusion
The study shows how the adolescent population cannot be recruited in the same way as adults, and presents valuable points for those who finalize advertising campaigns for donor recruitment recruitment. 相似文献7.
Turan Bayhan Şule Ünal Eyüp Çırak Onur Erdem Cemal Akay Orhan Gürsel İbrahim Eker Erdem Karabulut Fatma Gümrük 《Transfusion and apheresis science》2017,56(4):539-543
Objectives
Iron is taken into enterocytes at the duodenum via apical divalent metal-ion transporter 1 protein. Besides iron, divalent metal-ion transporter 1 also transports other divalent metals. We aimed to investigate blood heavy metal levels in patients with ineffective erythropoiesis.Methods
Blood levels of heavy metals including Pb, Al, Cd, Cr, Co, Cu, and Zn were measured in patients with thalassemia major (TM), thalassemia intermedia (TI), congenital dyserythropoietic anemia (CDA), and age- and sex-matched healthy controls.Results
Blood samples were obtained from 68 patients (51 patients with TM, 8 with TI, 9 with CDA), and a control group that included 65 volunteers. Patients with TM were found to have lower Al, Pb, and Zn, and higher Cd levels compared with the control group. The patients treated with deferasirox were further analyzed and Pb and Zn levels were found lower compared with the control group.Discussion
Patients with TM had tendency to have elevated levels of plasma cadmium; however, the median level was not at a toxic level. Increased metal-ion transporter 1 activity may cause heavy metal accumulation, but deferasirox chelation may be protective against heavy metals besides iron. 相似文献8.
Kanchan K. Mishra Apeksha Trivedi Sheetal Sosa Krima Patel Kanjaksha Ghosh 《Transfusion and apheresis science》2017,56(2):175-178
Background and objectives
Prevalence and composition of Hepatitis B, Hepatitis C and HIV-1, NAT positive but seronegative voluntary blood donors from western part of India is yet to be documented.Material and methods
Over last 2 1/2 years all the seronegative voluntary blood donors were tested using 10 minipools on a semiautomated NAT testing platform. The positively tested donors were followed up for at least five months for development of seropositivity.Results
79532 seronegative donations were tested by 10 minipool (MP) NAT leading to 51 positive sample (44 Hep B, 5 HIV 1 and Hep C positive). All the HIV and Hep C NAT positive donors eventually developed seropositivity and out of 44 Hep B NAT positive donors, 31 developed seropositivity within six months of follow up, following counseling of the donors. This data translate into NAT yield of 1:1559 donors for all virus taken together. NAT yield for Hep B 1:1807 donors were much higher than HIV 1 in 1:15906 and HCV yield of 1:39761. Semiautomated minipool NAT testing system was found to be cost effective way for improving blood safety.Interpretation and conclusion
Seronegative NAT yield in voluntary blood donors are quiet high in western part of India and in line with rest of the country is mainly due to Hepatitis B infection. Implementation of strict donor screening, Hep B vaccination of the population and sample mutation of NAT testing should be under taken on war footing. 相似文献9.
Maurizio Rondinelli Antonio Rossi Alessandra Gandolfi Fabio Saponaro Loredana Bucciarelli Guido Adda Chiara Molinari Laura Montefusco Claudia Specchia Maria Chiara Rossi Marco Scardapane Maura Arosio Stefano Genovese 《Clinical therapeutics》2017,39(1):159-169
Purpose
An observational retrospective study was conducted by 2 diabetes clinics in Italy to assess patterns of use and long-term effectiveness of liraglutide on established and emerging parameters.Methods
Data from 261 patients with type 2 diabetes who started treatment with liraglutide between 2010 and 2014 were collected. Hierarchical linear regression models were applied to assess trends over time of clinical parameters. Factors associated with higher likelihood of dropout were identified through multivariate logistic analysis.Findings
Liraglutide was initiated as a switch in 42.5% of patients and as an add-on in 49.8%; in 7.7% of the patients initiation of liraglutide was associated with a reduction in the number of pharmacologic agents. A statistically significant reduction after 36 months was found for the following parameters (mean change [95% CIs]): glycosylated hemoglobin (HbA1c; –1.01% [1.34% to –0.68%]), fasting blood glucose (–27.5 [–40.6 to –14.4] mg/dL), weight (–2.9 [–4.5 to –1.3] kg), body mass index (–1.13 [–1.76 to –0.50] kg/m2), waist circumference (–1.74 [–3.85 to –0.37] cm), and LDL-C (–24.7 [–36.67 to –12.8] mg/dL). Improvements in systolic (–3.5 mm Hg) and diastolic (–2.3 mm Hg) blood pressures were observed at 24 months. Albuminuria was reduced by –16.6 mg/L during 36 months, although statistical significance was not reached. Glomerular filtration rate and heart rate were unchanged. Reductions in HbA1c between –0.6% and –1.3% were obtained in specific subgroups. Treatment was effective also in patients with >20 years of diabetes duration, although the likelihood of dropout was 6% higher for each additional year of disease duration (RR = 1.06; 95% CI, 1.01–1.12). The likelihood of dropout was almost four times higher for subjects treated with insulin (RR = 3.82; 95% CI, 1.22–11.96) and more than twice for those treated with sulfonylureas (RR = 2.39; 95% CI, 1.16–4.94) compared with patients not treated with these agents.Implications
Liraglutide used in routine clinical conditions maintains its effectiveness on metabolic control and weight after 3 years. Improvements in terms of metabolic control were found when liraglutide was used as both switch and add-on treatment. In addition, improvements were sustained when liraglutide replaced sulfonylureas or insulin. Diabetes duration had no impact on drug efficacy. Long-term benefits relative to blood pressure and LDL-C were also found, which could not be entirely explained by antihypertensive/lipid-lowering treatment intensification. No major effect on renal parameters was documented. Diabetes duration and some concomitant treatments were associated with a higher likelihood of liraglutide discontinuation. These data can contribute to improve appropriateness and cost-effectiveness profile of liraglutide. 相似文献10.
Azucena Castrillo Teresa Jimenez-Marco José L. Arroyo María L. Jurado Luis Larrea Rosa M. Maymo Jorge Monge Carmen Muñoz Ángel Pajares Marta Yáñez 《Transfusion and apheresis science》2017,56(3):357-361
Background
Diverse variables are involved in apheresis platelet collection, processing and storage. This survey shows how these are realized in Spain.Method
An analysis of collected data was performed in a questionnaire completed by ten Transfusion Centers (TC) which perform between 50 and 520 apheresis procedures per month. This information comprises the procedures used to collect, inspect and store apheresis platelet concentrates (PC), and quality control data.Results
Macroscopic inspection of PC is performed in all TC, especially during the first few hours post-collection and before distribution. The type of processor, duration of post-collection resting periods and temperature from the time of collection until distribution are similar in all TC. In 80% of TC, PC with small and scarce aggregates are distributed to transfusion services. The presence of clumps is influenced by type of processor, female donor, cold ambient temperature and collection of hyperconcentrated platelets, and is often recurrent in the same donor, although some TC have not found any influential variables. Overall, no objective inspection methods are followed, although there are exceptions. The degree of compliance with quality control parameters, such as the number of units studied, mean platelet yield, residual leukocyte counts and pH at expiry date, is acceptable in all TC. Compliance in terms of number of microbiological culture samples is variable.Discussion
The usual practice in Spanish TC with respect to the collection, post-collection handling and storage of apheresis PC can be considered uniform, although some specific aspects of analyses should follow more objective methods. 相似文献11.
Diana Gritsenko Marianna Fedorenko Jorg J. Ruhe Jerry Altshuler 《Clinical therapeutics》2017,39(1):212-218
Purpose
Although vancomycin has been the mainstay of therapy for methicillin-resistant Staphylococcus aureus (MRSA) infections, its effectiveness has been challenged. Combination therapy may be used for patients with persistent MRSA bacteremia refractory to initial therapy. Studies have reported in vitro synergy between vancomycin and ceftaroline; however, clinical experience with this therapy is limited. Here, we report our experience with 5 cases of vancomycin-refractory MRSA bacteremia treated with the combination of vancomycin and ceftaroline.Methods
Between January 2014 and August 2016, 5 patients were identified who received vancomycin and ceftaroline combination therapy due to persistent bacteremia or deterioration of their clinical status on vancomycin alone (despite a vancomycin MIC within the susceptible range).Findings
Five patients presented with MRSA bacteremia secondary to endocarditis (n = 2), epidural abscess (n = 2), or left iliopsoas abscess (n = 1). Four of the 5 patients experienced microbiologic cure, and 1 patient transitioned to palliative care.Implications
This case series serves to describe additional clinical experience with vancomycin and ceftaroline combination therapy. This combination may be considered when vancomycin monotherapy does not lead to microbiological and/or clinical improvement in patients with metastatic MRSA bacteremia. Additional studies are warranted to further define its role in salvage therapy for persistent MRSA bacteremia. 相似文献12.
Hillary R. Bogner Heather F. de Vries McClintock Jibby E. Kurichi Pui L. Kwong Dawei Xie Sean Hennessy Joel E. Streim Margaret G. Stineman 《Archives of physical medicine and rehabilitation》2017,98(1):1-10
Objective
To examine how patient satisfaction with care coordination and quality and access to medical care influence functional improvement or deterioration (activity limitation stage transitions), institutionalization, or death among older adults.Design
National representative sample with 2-year follow-up.Setting
Medicare Current Beneficiary Survey from calendar years 2001 to 2008.Participants
Community-dwelling adults (N=23,470) aged ≥65 years followed for 2 years.Interventions
Not applicable.Main Outcome Measures
A multinomial logistic regression model taking into account the complex survey design was used to examine the association between patient satisfaction with care coordination and quality and patient satisfaction with access to medical care and activities of daily living (ADL) stage transitions, institutionalization, or death after 2 years, adjusting for baseline socioeconomics and health-related characteristics.Results
Out of 23,470 Medicare beneficiaries, 14,979 (63.8% weighted) remained stable in ADL stage, 2508 (10.7% weighted) improved, 3210 (13.3% weighted) deteriorated, 582 (2.5% weighted) were institutionalized, and 2281 (9.7% weighted) died. Beneficiaries who were in the top quartile of satisfaction with care coordination and quality were less likely to be institutionalized (adjusted relative risk ratio [RRR], .68; 95% confidence interval [CI], .54–.86). Beneficiaries who were in the top quartile of satisfaction with access to medical care were less likely to functionally deteriorate (adjusted RRR, .87; 95% CI, .79–.97), be institutionalized (adjusted RRR, .72; 95% CI, .56–.92), or die (adjusted RRR, .86; 95% CI, .75–.98).Conclusions
Knowledge of patient satisfaction with medical care and risk of functional deterioration may be helpful for monitoring and addressing disability-related health care disparities and the effect of ongoing policy changes among Medicare beneficiaries. 相似文献13.
Shabnam Asfaram Mahdi Fakhar Mehdi Mohebali Ahmad Mardani Elham Sadat Banimostafavi Hajar Ziaei Hezarjaribi Masoud Soosaraei 《Transfusion and apheresis science》2017,56(3):474-479
Background
Little is known regarding transfusion-transmitted leishmaniasis (TTL) and the real global incidence of visceral leishmaniasis (VL) among blood donors as carriers of Leishmania spp. in endemic VL foci including Iran. Recent epidemiological evidences indicate that blood donor may be harbor of Leishmania infantum (L. infantum) infection in Iran.Methods
The aim of the present study was to determine the prevalence of Leishmania infection among blood donors in a main endemic focus of VL in Iran using DAT and polymerase chain reaction (PCR) based methods Between July–September 2016, blood samples were collected from 600 apparently healthy blood donors from six blood donation centers and blood donation mobile unit in Ardabil Province, where VL cases had been recorded. Each of these samples was tested for anti-Leishmania antibodies, in direct agglutination test (DAT), and for L. infantum kDNA, the PCR-based assay.Results
Of 600 blood donors, which were examined, 23 (3.8%) blood donors were seropositive by DAT and of 23 seropositive subjects, 82.6% (19/23) were positive by PCR. All the seropositive cases were males except one of them was female.Conclusions
Our findings showed that many asymptomatic human carriers of L. infantum live in the endemic regions of northwestern Iran and potentially act as reservoirs of infection; those must be considered carefully by arrangement VL control strategies in the country. 相似文献14.
Li-xin Jiao Jing-ying Zhang Lin Chen Xiao-li Yu Yu Han Fan Yang Jiang-hong Yu Ling-ling Liu Yue Lang 《Transfusion and apheresis science》2017,56(6):855-857
Objective
To study serologic and gene characteristics of the B(A) blood group of blood donation volunteers in Jilin Province, China.Methods
ABO subgroups were identified by standard serologic techniques in ABO typing discrepancy samples from all donors at the Jilin Blood Center (410,354 non-repeat donors). DNA (deoxyribonucleic acid) was collected from each sample and PCR (polymerase chain reaction) was used to sequence exons 6 and 7 and intron 6, part 5 from the ABO subgroup samples. PCR products were sequenced to identify ABO subgroups and the B(A) allele.Results
Four cases of B(A) blood type were found after sequencing, including two different alleles: B(A)02 and B(A)04. Three of the four alleles were B(A)04.Conclusion
Among blood donation volunteers in Jilin Province, China, B(A)04 is the most common B(A) blood group allele, followed by B(A)02. The B(A) blood group is associated with a complicated serologic phenotype and DNA detection is necessary for this atypical phenotype sample. 相似文献15.
Chiara Savignano Cristina Rinaldi Vincenzo Tursi Cecilia Dolfini Miriam Isola Ugolino Livi Vincenzo De Angelis 《Transfusion and apheresis science》2017,56(4):520-524
Background
The addition of extracorporeal photochemotherapy (ECP) to standard immunosuppressive therapy has been suggested to be beneficial in the treatment of recurrent/persistent heart rejection.Methods
We reviewed medical data of heart transplant recipients who received ECP between 2010 and 2016 at our institution.Results
During the study period, eight patients underwent nine ECP courses. The median time from transplant to ECP was 18 months (range 9–54). Indications for ECP were recurrent rejection in 6 patients, persistent rejection in 1 patient and mixed rejection with hemodynamic compromise in 1 patient. Additional criteria for patients’ selection were represented by relevant comorbidities limiting the increase of immunosuppressive therapies. ECP was performed on an outpatient basis in 6 out of 8 patients. The median ECP duration was 12 months (range 1–18). Three out of 8 patients responded to ECP showing negative endomyocardial biopsies at the end of treatment. No additional rejection episodes were observed at their follow up (at 44, 72 and 31 months). Four of 8 patients failed to respond to ECP treatment, one patient has been judged not evaluable. Reduction of immunosuppressive therapies was obtained in all 3 responsive patients but also in 3 patients with a stable grade of rejection. The median duration of the follow up was 26 months (range 6–80). Two patients died at 6 and 21 months after beginning ECP. Survival after ECP was 78.2% at 26 months. No adverse effect or infectious complications associated with ECP were reported.Conclusions
The low response rate (37.5%) in our case series could be partially explained by patient selection, the treated patients representing a high-risk sub-set group. Further studies to provide evidence of a role for ECP in heart rejection treatment or prophylaxis are needed. 相似文献16.
17.
18.
Background
Rhnull is a rare autosomal recessive phenotype, which is characterized by the lack of Rh antigen expression on the red blood cells (RBCs). Rhnull of the regulator type is caused by RHAG mutation. In this study, a novel nonsense mutation in RHAG gene was identified in a Chinese Rhnull individual.Objectives and methods
Rh phenotypes of the Rhnull individual and his family members were typed by standard serological methods. DNA sequences of all ten exons of RHAG gene were analyzed using genomic DNA by polymerase chain reaction (PCR) and direct-sequencing.Results
Serological testing results showed a D-C-c-E-e- phenotype in the proband. Molecular analyses revealed a 540C > A mutation in exon 4 of RHAG gene was present at the homozygous state in the proband. His parents were heterozygous for the mutation, and his brother didn’t carry the mutation. The 540C > A mutation was nonsense mutation, which led to a premature stop codon (Tyr180stop).Conclusion
These results indicated that the 540C > A nonsense mutation in RHAG gene caused the regulator type of Rhnull phenotype in a Chinese individual. Our results contributed to a greater understanding of the genetic mechanisms of Rhnull phenotype. 相似文献19.
Ravi C. Dara Aseem K. Tiwari Dinesh Arora Geet Aggarwal Ganesh Singh Rawat Jyoti Sharma Devi Prasad Acharya Gunjan Bhardwaj 《Transfusion and apheresis science》2017,56(3):367-370
Background
There are several studies on prevalence of individual infectious disease markers (mono-infection) in donors but none on prevalence of coinfection. Co-infection is significant as it leads to accelerated disease progression. We, therefore, evaluated the prevalence of co-infection among blood donors.Materials and methods
The cross-sectional analysis was conducted in blood donors. All donors were tested for anti-HIV I and II, HBsAg, anti-HBC IgM, anti-HCV, Malaria and syphilis by chemiluminescence and ID-NAT assay. All reactive donor samples were confirmed by using confirmatory assays. Donors were grouped as mono-infected and co-infected. The student t-test was used for comparison.Results
During the study period, a total of 106,238 blood donors were tested. Mean age of donors was 34.2 years and 94.2% of blood donors were males. 1776 (1.67%) donor samples were confirmed serologically reactive. 1714 (1.61%) samples were reactive for single marker (mono-infected) while 62 (0.05%) donors’ samples exhibited co-infection. 18 donors were positive for HBV+HCV followed by HIV +syphilis (14).Conclusion
We report for the first time the prevalence of different co-infection patterns in blood donors. Co-infection influence the disease progression; it would be important to investigate the co-infection prevalence in larger sample size. 相似文献20.
Megan Sutter Laiene Olabarrieta Landa Amilkar Calderón Chagualá Helmer Chacón Peralta Gina Vergara Torres Paul B. Perrin Juan Carlos Arango-Lasprilla 《PM & R》2017,9(1):8-14