Abstract:
:We optimized fluorogenic thrombin-generation assays with regard to sample volume, calibration, analytic corrections, and activation reagents. Lower sample volumes (40 vs 80 microL) were associated with better recovery of thrombin activity, lower interference due to absorbance of light, and higher total thrombin generation (area under the curve), even using internal standards to calibrate plasma samples. With lower sample volumes, there was no advantage to internal calibration of samples without obvious interference (hemolysis). Previously developed corrections for measured vs expected fluorescence units, residual thrombin-alpha(2)-macroglobulin activity, and hemolysis improved the analytic accuracy of the assay. An optimized assay with a 40-microL sample volume, analytic corrections, and a corn trypsin inhibitor to block contact activation showed that 0.6 pmol/L tissue factor activator was better than 5 pmol/L at differentiating healthy subjects from patients with sepsis while demonstrating good reproducibility (area under the curve, 4% within-run and 7% between-run coefficient of variation).
journal_name
Am J Clin Patholjournal_title
American journal of clinical pathologyauthors
Chandler WL,Roshal Mdoi
10.1309/AJCP6AY4HTRAAJFQsubject
Has Abstractpub_date
2009-08-01 00:00:00pages
169-79issue
2eissn
0002-9173issn
1943-7722pii
132/2/169journal_volume
132pub_type
杂志文章abstract::Current methods for testing stool samples for hemoglobin utilize peroxidase oxidation of chemical indicators such as guaiac or benzidine. These tests have frequent false-positive and false-negative results, complicating random screening for occult gastrointestinal bleeding. The authors have developed an immunochemical...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/69.1.342
更新日期:1978-03-01 00:00:00
abstract::Telepathology is gaining acceptance as a mode of providing pathology services to remote sites, but its economic feasibility is unknown. A dynamic robotic telepathology service between the Veterans Affairs Medical Center, Iron Mountain, MI, and the Veterans Affairs Medical Center, Milwaukee, WI, provides diagnostic ser...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/112.4.470
更新日期:1999-10-01 00:00:00
abstract:OBJECTIVES:An intraoperative consultation (IOC) checklist was developed and implemented aimed at standardizing slide labeling and monitoring metrics central to quality and safety in surgical pathology. DESIGN:Data were collected for all IOC cases over a 9-month period. Slide labeling defect rates and IOC turnaround ti...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/aqz009
更新日期:2019-05-03 00:00:00
abstract::Delta checking is a laboratory information system (LIS)-based tool that detects patient and laboratory quality control errors. By using hemoglobin A1c (HbA1c) data, we developed a novel approach to summarizing and presenting patient Delta values to address limitations of current Delta check algorithms. Delta values we...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/VM6FVF6GGCYYJ9BV
更新日期:2008-08-01 00:00:00
abstract::Pathologic rupture of the spleen is a rare phenomenon in acute lymphocytic leukemia, and its mechanism is unknown. This complication has been seen almost exclusively in men, and at ages much older than those of the majority of patients who have this leukemia; these unusual features are also unexplained. A case of acut...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/72.1.118
更新日期:1979-07-01 00:00:00
abstract:Objectives:Diagnosis of B-cell acute lymphoblastic leukemia (B-ALL) requires immunophenotypic evidence of B-lineage and absence of specific myeloid or T-lineage markers. Rare cases of otherwise typical B-ALL express myeloperoxidase (MPO) detectable by flow cytometry with an absence of other myeloid markers, but the cli...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/aqx021
更新日期:2017-04-01 00:00:00
abstract::Laboratory Branch Complement Fixation and FIAX (fluorescence immunoassay) were compared for the detection of antibodies to herpes simplex virus and cytomegalovirus in human sera. Of 68 sera with no antibodies to herpes simplex virus by complement fixation, one specimen was positive by FIAX (specificity, 98.6%). Of 75 ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/75.3.387
更新日期:1981-03-01 00:00:00
abstract:OBJECTIVES:To characterize the clinical and pathologic features of mantle cell lymphoma with mantle zone growth pattern (MCL-MZGP). METHODS:The clinicopathologic data from 35 cases of MCL-MZGP obtained in 12 centers were analyzed. RESULTS:The patients with MCL-MZGP typically sought treatment at high clinical stages (...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/aqz043
更新日期:2019-07-05 00:00:00
abstract::The effects of physiologic temperature variations on antibiotic-induced killing of Escherichia coli, Pseudomonas aeruginosa, Streptococcus faecalis, and Streptococcus pneumoniae were studied. At concentrations less than or equal to four times the minimal bactericidal concentration, the activity of each of the antibiot...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/76.1.57
更新日期:1981-07-01 00:00:00
abstract::Thirty-five consecutive renal biopsy specimens were evaluated by light histology using paraffin and glycol methacrylate embedding. The clarity of the renal structures was found to be much better, and the renal lesions better defined, using glycol methyacrylate embedding. ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/64.5.655
更新日期:1975-11-01 00:00:00
abstract::One hundred eighty-three patients with endometrial carcinoma had both immunohistochemical and biochemical analysis of estrogen receptor (ER) and progesterone receptor (PR) content of the tumor. Biochemical analysis was done on a homogenate of uterine curettings; immunohistochemical stainings were done on formalin-fixe...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/94.3.255
更新日期:1990-09-01 00:00:00
abstract::The purpose of our study was to clarify the prognosis of lymphoepithelioma-like carcinoma (LELC) of the lung, which is rare. We analyzed the clinicopathologic features of 32 cases of pulmonary LELC and compared the cases with 84 cases of pulmonary non-LELC with available long-term follow-up information. The results sh...
journal_title:American journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1309/BUAN-BGFW-69U9-C3H8
更新日期:2001-06-01 00:00:00
abstract::A 30-year-old previously healthy man developed cervical adenopathy associated with mild constitutional symptoms. Corynebacterium ovis was isolated in pure culture from lymph node tissue on two separate occasions, and small gram positive organisms were identified in both lymph nodes with tissue gram stain. Histopatholo...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/76.4.486
更新日期:1981-10-01 00:00:00
abstract::A patient with acquired von Willebrand disease associated with multiple myeloma (IgG-lambda) is described. Mixture of his plasma or IgG fraction with washed control platelets resulted in the inhibition of aggregation with ristocetin, but mixture of control plasma or IgG fraction with washed patient platelets showed no...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/87.5.663
更新日期:1987-05-01 00:00:00
abstract::An American black family in whom hemoglobin J Baltimore and beta (+)-thalassemia genes coexisted is described. The proposita is a 23-year-old woman with a hemoglobin (Hb) level of 11.5 g/dl, microcytic, hypochromic indices, increased values of Hbs A2 and F, and alpha/non-alpha synthetic ratio of 1.52. Hbs A and J Balt...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/75.6.843
更新日期:1981-06-01 00:00:00
abstract::Urine myoglobin concentrations are measured clinically to assess rhabdomyolysis and the related risk of renal damage. We studied urine myoglobin concentrations in vitro to explore the factors affecting stability. Myoglobin was very unstable in urine specimens, especially below pH 6.5, and its immunoreactivity deterior...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/9AQ6-2FR2-65ER-3E2W
更新日期:2005-03-01 00:00:00
abstract::Malignant B-cell lymphomas represent a heterogenous group of lymphoreticular disorders that involve the skin in about 20% of reported cases. Skin involvement may be primary or secondary (ie, the result of hematogenous spread). Primary cutaneous B-cell lymphomas (PCBCLs) are thought to take a comparatively favorable co...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/106.6.749
更新日期:1996-12-01 00:00:00
abstract::Therapeutic control achieved by an anticoagulant clinic may be assessed by calculation of the proportion of time spent by the patients within the prothrombin time target range aimed for by the clinic. Three calculation methods for such assessment have been described by other investigators. The three methods were compa...
journal_title:American journal of clinical pathology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1093/ajcp/90.6.685
更新日期:1988-12-01 00:00:00
abstract::Transketolases link the Embden-Meyerhof pathway to the pentose phosphate pathway. An influence of p-Akt on this metabolism was described. This study was performed to compare the expression of transketolase-like 1 (TKTL1) and p-Akt in glioblastoma multiforme (GBM) and other astrocytic gliomas (AGs, grades II and III). ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/6H9844AMMET82DBJ
更新日期:2008-07-01 00:00:00
abstract:OBJECTIVES:Method imprecision, error rates, and explanatory causes that were identified in the Institute for Quality Management in Healthcare point-of-care (POC) glucose proficiency testing (PT) program were assessed in comparison with results obtained from laboratory glucose PT surveys. METHODS:POC and laboratory glu...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/AJCPP5YS2MVSKBYY
更新日期:2014-12-01 00:00:00
abstract::Reported is a case of lymphoma which was preceded for nine years by an apparently reactive lymphadenopathy. Original slides of the multiple lymphoid tissue samples are reviewed, with emphasis on the gradually increasing numbers of mitoses, atypical histiocytes, and eosinophils, suggestive of malignant transformation. ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/68.5.606
更新日期:1977-11-01 00:00:00
abstract::A 75-year-old man with Staphylococcus aureus endocarditis in whom acute diffuse proliferative glomerulonephritis developed is described. The light- and electron-microscopic changes of the glomeruli in this case were identical to those of acute poststreptococcal glomerulonephritis. Immunofluorescence revealed depositio...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/70.5.832
更新日期:1978-11-01 00:00:00
abstract::Two patients with essential thrombocythemia showed a marked decrease in ristocetin-induced platelet aggregation in addition to other aggregation defects during routine aggregation studies for prolonged bleeding times. Further investigation revealed type I von Willebrand's disease (vWD) in one patient and a variant of ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/88.1.102
更新日期:1987-07-01 00:00:00
abstract::The performances of four instruments for counting platelets were evaluated in a side-by-side study: the Haema-Count MK-4/HC, an electronic impedance instrument that counts platelets in platelet-rich plasma; the Ultra-Flo 100, and the Coulter Counter Model S-Plus, electronic impedance instruments that count platelets i...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/74.2.119
更新日期:1980-08-01 00:00:00
abstract::We studied 68 sporadic colorectal carcinomas (CRCs) with medullary features (MCRCs) and compared them with 35 poorly differentiated purely "enteric" CRCs (ECRCs) and 15 purely neuroendocrine carcinomas (NECs) of grades II and III, all in patients lacking a family history of CRC. Potential clinicopathologic differences...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract::A case of congenital Pelger-Hüet anomaly of the peripheral blood cells is described. Electronmicroscopic examination of the blood cells revealed nuclear bridges and appendices in the polymorphonuclear leukocytes. The number of cytoplasmic granules was diminished, but the size of the secondary granules was markedly inc...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/65.6.942
更新日期:1976-06-01 00:00:00
abstract::A rapid, convenient immunologic assay technic for fibrinogen is reported. Basically a latex agglutination, the assay technic, called kinetic latex agglutinometry, quantitates the increase in light transmission that occurs in a stirred suspension of anti-fibrinogen-coated latex beads after the addition of a plasma or w...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/77.4.424
更新日期:1982-04-01 00:00:00
abstract:OBJECTIVES:B-lymphoblastic leukemia (B-LBL) arising in patients with chronic lymphocytic leukemia (CLL) is exceedingly rare and poorly characterized. METHODS:We describe four patients with CLL and concurrent or subsequent B-LBL diagnosed by morphologic, immunophenotypic, cytogenetic, and molecular analysis and reviewe...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/AJCPXE5VMONMVLZ0
更新日期:2015-08-01 00:00:00
abstract::Hyperparathyroidism may occasionally present as a neck mass resulting from cystic change in a parathyroid adenoma. We report an unusual instance of hyperparathyroidism presenting as a palpable, but asymptomatic hyperplastic parathyroid gland cyst. We conclude that hyperplastic parathyroid glands may undergo cystic deg...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/77.1.104
更新日期:1982-01-01 00:00:00
abstract::Seven monoclonal antibodies of rat origin were generated against human epidermal keratins and were assayed by immunoblot and by immunoperoxidase staining of frozen sections from various human epithelial tissues. By immunoblotting, the antibodies recognized two different subsets of high molecular weight cytokeratin pol...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/89.3.315
更新日期:1988-03-01 00:00:00