Abstract:
:A practical acidimetric assay for penicillinase production using penicillin and phenol red impregnated in paper discs was developed. Blank discs were first impregnated with buffered penicillin G and, after drying, with 1% phenol red. For use, a disc was added to a bacterial suspension made in saline solution. A yellow color within 1 to 30 min of incubation indicated penicillinase production. These discs were tested against Staphylococcus aureus, Haemophilus influenzae, and Neisseria gonorrhoeae, and the assay was found to be a simple, rapid, and accurate method for detection of penicillinase.
journal_name
Am J Clin Patholjournal_title
American journal of clinical pathologyauthors
Tu KK,Jorgensen JH,Stratton CWdoi
10.1093/ajcp/75.4.557subject
Has Abstractpub_date
1981-04-01 00:00:00pages
557-9issue
4eissn
0002-9173issn
1943-7722journal_volume
75pub_type
杂志文章abstract:OBJECTIVES:Although diffuse alveolar damage, a subtype of acute lung injury (ALI), is the most common microscopic pattern in coronavirus disease 2019 (COVID-19), other pathologic patterns have been described. The aim of the study was to review autopsies from COVID-19 decedents to evaluate the spectrum of pathology and ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/aqaa156
更新日期:2020-11-04 00:00:00
abstract::The examination of T-cell receptor (TCR) repertoires has an important role in the study of lymphoproliferative disorders and autoimmune diseases. Analysis of the complementarity-determining region 3 (CDR3) of the TCR beta chain is used to assess the clonality of T-cell populations. We developed a rapid fluorescence-ba...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/111.5.683
更新日期:1999-05-01 00:00:00
abstract::Distributions of nine clinical chemistry determinations (serum bilirubin, globulin, creatinine, thyroxine, alkaline phosphatase, hematocrit, aspartate aminotransferase, uric acid, and plasma glucose) were assessed for 1,605 schoolchildren aged 6 to 17 years, in the Cincinati Lipid Research Clinic's Princeton School Di...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/74.4.371
更新日期:1980-10-01 00:00:00
abstract::Congenital-infantile fibrosarcoma (CIFS) is a relatively indolent sarcoma that should be distinguished from more aggressive spindle cell sarcomas of childhood. CIFSs have been found to have a novel recurrent reciprocal translocation t(12;15)(p13;q25) resulting in the gene fusion ETV6-NTRK3 (ETS variant gene 6; neurotr...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/3H24-E7T7-V37G-AKKQ
更新日期:2001-03-01 00:00:00
abstract:OBJECTIVES:We describe the morphologic and immunohistochemical features of 17 endometrial stromal neoplasms, 16 sarcomas, and one stromal nodule. METHODS:We reviewed 35 cases interpreted as endometrial stromal neoplasms, but 17 high-grade endometrial stromal sarcomas (ESS) and one case of mixed endometrial sarcoma and...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/AJCPS88CMJRXZBWA
更新日期:2014-06-01 00:00:00
abstract::Primary thymic epithelial neoplasms have been the subject of much controversy in recent years owing to the difficulties posed by these tumors for precise histopathologic typing and prognostication. A number of classification schemes using different terminology have been proposed, none of which has satisfactorily manag...
journal_title:American journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1093/ajcp/111.6.826
更新日期:1999-06-01 00:00:00
abstract::A study was made of quantitative urine cultures in bacteremic patients with urinary tract infection as the only identifiable source. These patients represent the most serious form of urinary tract infection and should be recognized as significant by the criteria used for interpreting quantitative urine cultures. In 83...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/85.5.616
更新日期:1986-05-01 00:00:00
abstract::Four acid hydrolases, acid phosphatase (AP), alpha-naphthyl acetate esterase (ANAE), beta-glucuronidase, and N-acetyl-beta-glucosaminidase, were determined cytochemically in peripheral blood lymphocytes from 50 patients with B and T chronic lymphocytic and prolymphocytic leukemias (CLL, PLL) and related disorders. Str...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/78.4.437
更新日期:1982-10-01 00:00:00
abstract::There are wide variations in the preparation of histologic sections from endoscopic esophageal biopsy specimens. We evaluated serial step sections from 261 esophageal or gastroesophageal junction biopsies at 4 levels to determine the first level at which goblet cell metaplasia (GCM) was detected. Deeper step sections ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/MGRX-LQG9-QVRV-VMCG
更新日期:2005-06-01 00:00:00
abstract::By electrophoresis, prealbumin is seen as a discrete band anodic to the albumin fraction. Cases of duplicate bands in the prealbumin region have been described previously in serum, cerebrospinal fluid, and urine, and have had an association with varied clinical entities. The authors describe a novel association of sev...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/101.4.475
更新日期:1994-04-01 00:00:00
abstract::The uptake and storage of 5-hydroxytryptamine by human platelets from normal donors and patients with the carcinoid syndrome are reported. When platelets were incubated in the presence of 3H-5-hydroxytryptamine (50 microM), an initial phase of rapid uptake was observed until 5-hydroxytryptamine levels of 1--2 microgra...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/70.4.628
更新日期:1978-10-01 00:00:00
abstract::Urine cultures represent 40-50% of specimens processed by hospital clinical microbiology laboratories. An accurate rapid screening method to detect positive urine cultures could greatly improve laboratory efficiency. Three hundred eighty-two unselected urines were screened by nephelometry at 2, 4, and 5 hours of shaki...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/77.3.305
更新日期:1982-03-01 00:00:00
abstract::Recombinant factor VIIa (rFVIIa) has become available for treating people with hemophilia with inhibitors who experience bleeding or require surgery. It has become apparent that rFVIIa is useful in controlling bleeding in a variety of clinical situations. This review attempts to collate and summarize the nonhemophilia...
journal_title:American journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1309/D0G0-C96V-05CJ-5B4J
更新日期:2004-01-01 00:00:00
abstract::Measuring HER-2 is important for selecting optimal therapy and predicting prognosis in breast cancer patients. Current methods for evaluating HER-2 include measuring protein overexpression by immunohistochemistry (IHC), measuring gene copy number by fluorescent in situ hybridization (FISH), and measuring shed antigen ...
journal_title:American journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1309/D76M-QEGU-62BT-HKER
更新日期:2002-06-01 00:00:00
abstract::Neutrophil function was determined in resting and phagocytic cells by an assay of hexose monophosphate shunt activity performed on small volumes of whole blood. This new micromethod clearly differentiated between zymosan-stimulated and unstimulated hexose monophosphate shunt activity. Furthermore, the whole blood micr...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/74.1.88
更新日期:1980-07-01 00:00:00
abstract::Using microscopic screening criteria employed in the study of sputum in acute bacterial pneumonia, the authors evaluated 644 sputum samples from 347 patients submitted for mycobacterial bacterial culture. After microscopic examination, these specimens were processed using standard mycobacterial laboratory technics. Sa...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/84.3.361
更新日期:1985-09-01 00:00:00
abstract::A column chromatographic method for the simultaneous single-eluate isolation of CPK-MB and LDH 1,2 has been evaluated. The method is rapid in that the entire isolation is completed in less than an hour and subsequent analysis can be performed using presently available spectrophotometric methods and reagents without th...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/66.2.425
更新日期:1976-08-01 00:00:00
abstract::Establishment of a procedure termed cerebrospinal fluid (CSF) TRAP ("Transport and Rapid Accessioning for Additional Procedures") allows clinicians to appropriately store, at -75 degrees C, and rapidly access CSF specimens. The CSF TRAP enhances patient care by decreasing the need for repeat lumbar punctures and provi...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/90.6.707
更新日期:1988-12-01 00:00:00
abstract::The demonstration of tartrate-resistant acid phosphatase (TRAP) activity has long been a cornerstone in the diagnosis of hairy cell leukemia (HCL). Recently a monoclonal antibody to this enzyme has been developed that can be used in an immunoperoxidase method on paraffin-embedded tissues. By using a peroxidase-labeled...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/108.3.308
更新日期:1997-09-01 00:00:00
abstract::We report an unusual case of acinar cell cystadenoma of the pancreas in a 52-year-old man treated for pulmonary adenocarcinoma. The lesion, located in the body of the pancreas, was revealed incidentally by abdominal computed tomography during follow-up for a pulmonary neoplasm. A left pancreatectomy was performed. The...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/JQQ1-06NY-0F3J-PEU9
更新日期:2002-08-01 00:00:00
abstract::Estrogen and progesterone receptors were studied in fine-needle aspiration biopsy specimens of 56 patients with primary, recurrent, or metastatic breast carcinoma. The ligands, 17 B-estradiol-6-carboxymethyloxine-bovine serum albumin fluorescein isothiocyanate (FITC-BSA estradiol) and hydroxyprogesterone hemisuccinate...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/95.1.35
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVES:Sclerosing pneumocytomas are rare pulmonary neoplasms that are typically benign. However, rare patients experience progressive disease, and therapy targeting specific genetic underpinnings could be an attractive therapeutic option. Recent studies have found recurrent AKT 1 mutations in sclerosing pneumocytom...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/aqaa136
更新日期:2020-11-04 00:00:00
abstract::Haemophilus influenzae type b, Escherichia coli, Neisseria meningitis, Streptococcus agalactiae, and Streptococcus pneumoniae are classically the predominant meningeal pathogens of children. The Directigen latex agglutination test identifies these pathogens by detecting specific antigens in cerebrospinal fluid (CSF) a...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/101.6.729
更新日期:1994-06-01 00:00:00
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 genera...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/AJCP6AY4HTRAAJFQ
更新日期:2009-08-01 00:00:00
abstract::To investigate the effect of matrix-degrading enzymes on the malignant potential of oral squamous cell carcinoma, the expression of matrix metalloproteinase-2 (MMP-2/72-kD gelatinase/type IV collagenase) in 46 patients who had neck surgery for oral cancer was studied immunohistochemically. In 20 of 26 patients (76.9%)...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/99.1.18
更新日期:1993-01-01 00:00:00
abstract::Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors characterized by mutations of KIT or PDGFRA. The objectives of this study were to evaluate BRAF mutations in GISTs and then to correlate BRAF mutational status in the tumor with clinical parameters, with B-raf expression, and with activation of some cellul...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/AJCPPCKGA2QGBJ1R
更新日期:2010-01-01 00:00:00
abstract::Pseudo-Pelger-Huët anomaly (PPHA) has been documented in association with transplant medications and other drugs. This iatrogenic neutrophilic dysplasia is reversible with cessation or adjustment of medications but is frequently confused with myelodysplastic syndrome (MDS) based on the conventional concept that PPHA i...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/AJCPVFY95MAOBKRS
更新日期:2011-02-01 00:00:00
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::Cardiac-related death has been reported following strenuous exercise, and biochemical markers predicting adverse outcomes would be useful. Despite the fact the myeloperoxidase (MPO) release may precede myocardial injury and identify at-risk patients earlier than traditional markers, information on the effects of marat...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1309/1D62H6KRFTVQRJ0A
更新日期:2006-12-01 00:00:00
abstract::Nineteen patients with acute nonlymphocytic leukemia were found to have a pericentric inversion of chromosome 16. All were classified as having acute myelomonocytic leukemia (M4) according to French-American-British Cooperative Group (FAB) criteria. Consistent abnormalities of marrow eosinophils were present. In 15 of...
journal_title:American journal of clinical pathology
pub_type: 杂志文章
doi:10.1093/ajcp/81.6.733
更新日期:1984-06-01 00:00:00