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Abstract
Substantial advances have been made in the understanding of chronic hyperprolactinemia. The diagnostic effort should be directed at excluding physiological and pharmacological causes of chronic hyperprolactinemia, both of which are reversible and are not likely to be of grave consequence. Subsequently further efforts should be made to rule out obvious pathological entities, in particular, treatable hypothyroidism. Finally, the diagnosis of prolactinoma must be entertained. It relies on the biochemical determination of prolactin as well as direct imaging of the pituitary.
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228
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Katz E, Betancourt A. Induction of tyrosinase by L-methionine in Streptomyces antibioticus. Can J Microbiol 1988; 34:1297-303. [PMID: 3148362 DOI: 10.1139/m88-227] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Investigations were carried out to establish conditions favorable for the formation of tyrosinase, an inducible metalloenzyme synthesized by Streptomyces antibioticus. It was determined that the size of the inoculum and age of the culture as well as the temperature of incubation were important factors for enzyme synthesis. Induction of tyrosinase by S. antibioticus appears to be specific for L-methionine with maximal enzyme synthesis observed at 0.1 mM. Addition of CuSO4 and D-glucose at the time of induction also are important for increased enzyme activity. Inhibition of tyrosinase synthesis was observed with actinomycin D, rifampicin, and chloramphenicol suggesting that both transcriptional and translational events are required for tyrosinase induction.
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229
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Katz E, Gimmon Z. Use of a long guide wire for proper placement of misdirected hickman catheters. Clin Nutr 1988. [DOI: 10.1016/0261-5614(88)90046-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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230
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Katz E. A comparison of the efficacies of Caridex and conventional drills in caries removal. COMPENDIUM (NEWTOWN, PA.) 1988; 9:804, 806-7. [PMID: 3248265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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231
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Katz E. Using PCs to tool up for maintenance management. HEALTH FACILITIES MANAGEMENT 1988; 1:36, 38, 40-1. [PMID: 10289896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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232
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Katz E. [Urinary tract infections, 30 years later]. Rev Med Chil 1988; 116:258-9. [PMID: 3244934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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233
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Hitchcock MJ, Katz E. Purification and characterization of tryptophan dioxygenase from Streptomyces parvulus. Arch Biochem Biophys 1988; 261:148-60. [PMID: 3341771 DOI: 10.1016/0003-9861(88)90113-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Tryptophan dioxygenase, derived from Streptomyces parvulus, was purified to near homogeneity and shown to have a native Mr of 88,000. Kinetic parameters of the enzyme were determined and evidence suggesting that it is a hemoprotein was obtained. Tryptophan dioxygenase has a high specificity toward L-tryptophan with an apparent Km of 0.3 mM. L-3-Hydroxykynurenine was a competitive inhibitor with respect to L-tryptophan with a Ki of 0.16 mM. In vitro, the enzyme displayed little activity in the absence of a reducing agent; ascorbate, at 50 mM, was the preferred reductant providing almost a 50-fold increase in enzyme activity. The regulation of tryptophan dioxygenase synthesis and activity is described. The expression of the enzyme is correlated with the biosynthesis of actinomycin D in S. parvulus. These results support the hypothesis that tryptophan dioxygenase functions as the first enzyme in the sequence converting L-tryptophan to the chromophore of this antibiotic.
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234
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Katz E, Lipnitzky V, Feigl D. [Cortical blindness and microangiopathic hemolytic anemia with pulmonary malignancy]. HAREFUAH 1988; 114:60-2. [PMID: 3350417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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235
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Thorneycroft IH, Watson D, Katz E, Wun WS. Beta human chorionic gonadotropin levels in cul-de-sac blood of patients with ectopic pregnancies. Fertil Steril 1988; 49:166-7. [PMID: 2446930 DOI: 10.1016/s0015-0282(16)59671-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
hCG levels in cul-de-sac and peripheral blood in patients with ectopic pregnancies were studied. hCG levels were significantly higher in the cul-de-sac blood than in peripheral blood (P less than 0.01). The high hCG level in the cul-de-sac blood was not due to interference by proteolytic enzymes in cul-de-sac blood since the protease inhibitors, aprotinin and phenylmethylsulfony fluoride, did not alter the RIA results from cul-de-sac samples, nor did Con-A chromatography of the samples. Assay of cul-de-sac blood samples for hCG may increase the sensitivity of diagnosing ectopic pregnancies.
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236
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Rudelstorfer R, Deutinger J, Katz E, Bernaschek G. [Vaginal sonographic flow measurements in the uterine artery in pregnancy--advantages of the pulsed Doppler method]. ZEITSCHRIFT FUR GEBURTSHILFE UND PERINATOLOGIE 1988; 192:14-8. [PMID: 3285613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Uterine artery velocimetry was performed transvaginally in 42 healthy pregnant women by means of a newly developed "panorama" sector scanner which provides a real time image of the vessel in combination with the recording of a pulsed and gated Doppler signal. Measurements were made on both uterine arteries and averaged. A/B ratios and pulsatility indices declined as pregnancy advanced. A/B ratios I. Trimenon vs. III. Trimenon = 5.44 vs. 2.20, PI = 2.59 vs. 1.32. These changes may be secondary to the conversion of spiral arteries into dilated tortuous vessels by the trophoblast invasion. Flow velocity measurements of the proximal uterine arteries provide a summery of the blood supply to all the arcuate arteries. This method will enhance our understanding of adequate placentation and may provide a new tool in the diagnosis and monitoring of complicated pregnancies.
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237
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Abstract
The purpose was to show whether or not the encoding of location met criteria defining an automatic process (L. Hasher & R. T. Zacks, 1979, Journal of Experimental Psychology: General, 108, 356-388; 1984, American Psychologist, 39, 1372-1388). Among other criteria, automatic processes are not expected to show developmental changes beyond an early age, to be unrelated to intelligence level, and to be unaffected by instructions. In the first experiment preschool through sixth-grade children were compared on a 40-picturebook task following incidental (remember the names of pictures) or intentional (remember location) instruction. Subjects viewed and named pictures in sets of four, arranged in quadrants in the opened book, and then attempted to recall names of the objects pictured and to relocate pictures on blank pages. In the second experiment, second and sixth graders, college students, elderly persons, and mentally retarded persons were compared on a 60-picturebook task following either incidental or semantic incidental instructions (give the function of objects pictured). Memory for location was invariant across age groups and intelligence level. The only exception was that 3 and 4 year olds were more accurate following intentional instructions. Otherwise there were no differences between intentional and incidental instructions. Semantic instructions resulted in slightly more accurate locations. The results were interpreted as supportive of the Hasher and Zacks' automaticity hypothesis.
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238
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Katz E, Engelhard D, Kerem E, Eid A, Berlatzki Y. Noma in an unusual case of perforated appendicitis with pneumoperitoneum. J Pediatr Surg 1987; 22:1017-8. [PMID: 3430301 DOI: 10.1016/s0022-3468(87)80503-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Noma is a very rare gangrenous infection of the oral cavity usually associated with debilitating diseases, immunosuppression, or malnutrition. Its development in a previously healthy 13-year-old boy with perforated appendicitis is presented. Streptococcus bovis type II and E coli were isolated from the noma and Streptococcus bovis, Bacteroides fragilis, and Bacteroides asacharolyticus from the peritoneal fluid. A transient impaired immune cellular function was found and may have contributed to the development of the noma in this child.
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239
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Eliakim R, Fich A, Libson E, Katz E, Rachmilewitz D. Crohn's disease of the duodenum presented as pancreatitis due to persimmon bezoar. J Clin Gastroenterol 1987; 9:553-5. [PMID: 3680906 DOI: 10.1097/00004836-198710000-00014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Pancreatitis due to Crohn's disease of the duodenum is very rare. It is the result of either reflux of duodenal content into the pancreatic duct or stenosis due to direct involvement of the ampullary region with Crohn's disease. The patient described had isolated Crohn's disease of the duodenum; pancreatitis was the result of persimmon bezoar's constricting the ampullary region.
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240
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Solomon S, McCartney JR, Saravay SM, Katz E. Postoperative hospital course of patients with history of severe psychiatric illness. Gen Hosp Psychiatry 1987; 9:376-82. [PMID: 3678811 DOI: 10.1016/0163-8343(87)90073-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The postoperative hospital course of 54 patients with a past history of psychiatric illness was studied through chart review. Both chronic schizophrenics and chronic depressives tolerated surgical procedures well, without any unusual difficulties or exacerbation of psychiatric illness. They represented no management problems. Patients with acute, severe upset in the preoperative period (regardless of diagnosis) presented most of the management problems postoperatively.
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241
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Rock JA, Guzick DS, Katz E, Zacur HA, King TM. Tubal anastomosis: pregnancy success following reversal of Falope ring or monopolar cautery sterilization. Fertil Steril 1987; 48:13-7. [PMID: 3595909 DOI: 10.1016/s0015-0282(16)59282-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The present study reviews pregnancy outcome following tubal anastomosis in 80 previously sterilized women. Thirty of 58 women (52%) sterilized by monopolar cautery techniques delivered a living child as compared to 19 of 22 women (86%) sterilized using the Falope ring method. Cumulative pregnancy curves were calculated for the Falope ring and cautery groups using life-table methods. Following reversal of Falope ring sterilization, the estimated cumulative probability of pregnancy 6, 12, 24, and 36 months after surgery was 28.4%, 48.8%, 69.3%, and 87.2% respectively. The corresponding estimates following reversal of cautery sterilization were lower at 6, 12, 24, and 36 months following surgery: 22.7%, 37.8%, 52.4%, and 57.9%, respectively. The ectopic tubal pregnancy and spontaneous abortion rate were higher among women sterilized with monopolar cautery. A decreased pregnancy rate was associated with ampullary-isthmic anastomosis in the cautery group; however, pregnancy was least likely to occur in women with shortened oviducts of less than 4 cm.
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242
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Shoham Z, Katz E, Blickstein I, Katz Z, Zosmer A, Dgani R, Lancet M. New immunochemical method for rapid detection of human choriogonadotropin in urine. Clin Chem 1987. [DOI: 10.1093/clinchem/33.6.800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
We describe a visual assay for rapid detection of choriogonadotropin (hGC) in human urine, and evaluate a pregnancy test kit that is based on this assay and designed for use by the general public. The assay involves the formation of an antibody-antigen complex between the anti-hGC antibodies coated on the membrane protein of Staphylococcus aureus bacteria, prestained with hematoxylin, and the hGC concentrated on a column of Sepharose-concanavalin A. The test was calibrated to detect as little hGC as 0.9 (SD 0.15) int. unit/mL. The kit, clinically tested with 448 urine samples, was 99.6% accurate. Simple to perform, the test gives highly reliable results as early as five days after the missed menstrual period.
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243
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Shoham Z, Katz E, Blickstein I, Katz Z, Zosmer A, Dgani R, Lancet M. New immunochemical method for rapid detection of human choriogonadotropin in urine. Clin Chem 1987; 33:800-2. [PMID: 3594818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We describe a visual assay for rapid detection of choriogonadotropin (hGC) in human urine, and evaluate a pregnancy test kit that is based on this assay and designed for use by the general public. The assay involves the formation of an antibody-antigen complex between the anti-hGC antibodies coated on the membrane protein of Staphylococcus aureus bacteria, prestained with hematoxylin, and the hGC concentrated on a column of Sepharose-concanavalin A. The test was calibrated to detect as little hGC as 0.9 (SD 0.15) int. unit/mL. The kit, clinically tested with 448 urine samples, was 99.6% accurate. Simple to perform, the test gives highly reliable results as early as five days after the missed menstrual period.
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244
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Abstract
A growth rate analysis of lung metastases of benign giant cell tumor (GCT) of bone, histologically indistinguishable from the primary benign tumor, is presented. The doubling time (DT) was 186 days in the first 13 months of growth, and 465 days in the last 4 months. These DTs are much longer than DT of lung metastases of any other tumors, and have a good correlation with a long survival time. Backward extrapolation showed that the lung metastases began to develop years before the primary tumor was diagnosed and treated. If this can be confirmed in a larger number of patients, it could be concluded that there will be no indication for amputation as a treatment for benign GCT whether or not lung metastases are present. The growth rate analysis supports the concept that these metastases might represent a benign process, and as such are a unique histologic and clinical phenomenon.
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245
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Katz E. Early women medical writers: a descriptive handlist. AB BOOKMAN'S WEEKLY : FOR THE SPECIALIST BOOK WORLD 1987:1701-3. [PMID: 11612070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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246
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Katz E. Thiosemicarbazones: inhibition of the growth of pox viruses and requirement for the growth of an isatin-beta-thiosemicarbazone dependent mutant. REVIEWS IN CLINICAL & BASIC PHARMACOLOGY 1987; 6:119-30. [PMID: 3310129 DOI: 10.1515/jbcpp.1987.6.2.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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247
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Abstract
This study was designed to survey RMTs in the Southeastern region of the National Association for Music Therapy, Inc. concerning their participation and interest in research. To accomplish this purpose, a questionnaire was designed and mailed to all RMTs in the Southeastern region (N = 310); completed surveys were returned by 141 individuals, for a response rate of 45%. This article discusses survey responses in the following four areas: respondents and populations served, nature of music therapy programs, research involvement, and research needs and interests.
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248
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249
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Jay SM, Elliott CH, Katz E, Siegel SE. Cognitive-behavioral and pharmacologic interventions for childrens' distress during painful medical procedures. J Consult Clin Psychol 1987; 55:860-5. [PMID: 3693651 DOI: 10.1037/0022-006x.55.6.860] [Citation(s) in RCA: 144] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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250
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Katz E. Heterogeneity in transformation efficiency of NIH 3T3 cells as determined by transfection with oncogenes. Eur J Cell Biol 1986; 42:231-5. [PMID: 3816817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Clones of cells have been isolated from a culture of NIH 3T3 cells and characterized. A high degree of variation between the clones was observed in their efficiency of transformation following transfection with the ras and myc oncogenes. No correlation was found between this characteristic and either the growth rate of these cells in vitro or the efficiency of transfection, as judged by the acquisition of geneticin resistance and chloramphenicol acetyl transferase activity. Continuous maintenance of NIH 3T3 cells in culture resulted in a significant decrease in susceptibility to transformation. It is suggested that the NIH 3T3 cell line comprises a heterogeneous population of cells, and it is the balance between the various types of cells which determines the phenotype of the culture. This balance can be spontaneously disrupted while the culture is grown continuously in vitro.
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