901
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Becker S, Haskill S. Kinetics of inflammation and sarcoma cell development in primary Moloney sarcoma-virus-induced tumors. Int J Cancer 1981; 27:229-34. [PMID: 7287218 DOI: 10.1002/ijc.2910270216] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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902
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Davessar K, Farmer W, Becker S. Multicentric endobronchial granular cell myoblastoma. THE JOURNAL OF THE MEDICAL SOCIETY OF NEW JERSEY 1981; 78:41-3. [PMID: 6267287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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903
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Singer MV, Becker S, Solomon TE, Grossman MI. Effect of adding albumin to solutions of secretin on pancreatic volume and bicarbonate response. Scand J Gastroenterol 1981; 16:625-8. [PMID: 7323696 DOI: 10.3109/00365528109182021] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In six conscious dogs with gastric and pancreatic Thomas fistulas, we studied the pancreatic bicarbonate response to intravenous bolus injections of synthetic secretin dissolved either in 5 ml of 0.15 M NaCl alone or in the same amount of NaCl to which dog albumin had been added, to give a 0.1% solution. The pancreatic bicarbonate (micromol . 10 min-1) response to the four lowest doses of secretin (12.5, 25, 50, 100 ng . kg-1) used was significantly (p less than 0.05) higher when secretin was dissolved in NaCl plus albumin than in NaCl alone. The pancreatic response to higher doses of secretin (200, 400, 800, 1600 ng . kg-1) was not significantly altered by the addition of albumin. The D50 of secretin was about 2.6 times greater in the absence than in the presence of albumin. This study suggests that albumin should be added to dilute solutions of secretin to preserve biological activity.
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904
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Abstract
SummaryFrom matched birth and census records in the Matlab area of Bangladesh, monthly fertility rates for the period 1970–74 are studied for seasonal patterns by age and parity. Trigonometric regression techniques are used to summarize and compare the multiple series. Pronounced seasonal patterns are apparent for all age and parity groups. The general fertility rate peaks in December with a seasonal variation of 42% above and below the mean level. For younger women at low parities the peak is in late October, while for older women of higher parity it is in January. The shift progresses linearly with age and parity though the age effect is the more pronounced. A seasonal pattern of fecundability which varies by age group could explain the shift.
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905
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Bitter-Suermann D, Becker S, Meuer S, Schorlemmer HU, Hadding U, Andreatta R. Comparative study on biological effects of the guinea pig complement-peptide C3a and C3a-related synthetic oligopeptides. Mol Immunol 1980; 17:1257-61. [PMID: 7464830 DOI: 10.1016/0161-5890(80)90022-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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906
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Becker S, Klein E. Defective cytotoxic T-cell generation in Moloney murine sarcoma virus-infected A/Sn mice. J Natl Cancer Inst 1980; 65:811-6. [PMID: 6968372 DOI: 10.1093/jnci/65.4.811] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Cytotoxic T-cells (CTL) could not be detected in spleen cell suspensions from Moloney murine sarcoma virus (M-MuSV)-induced tumor-bearing A/Sn and (A/Sn X C57BL/6) F1 mice, with the A/Sn-derived natural killer (NK)-sensitive YAC-1 lymphoma cells used as targets. However, spleen T-cells from tumor-bearing (A/Sn X C57Bl/6)F1 mice were efficient killers against C57BL/6-derived RBL-5 cells. When tested for viral antigens by sera from mice with regressing atumors, YAC-1 and RBL-5 cells cross-reacted. The anti-RBL-5 effect of spleen cells from A/Sn X C57BL/6)F1 tumor bearers was blocked in cold target competition experiments by YAC-1 cells, which suggested the expression of a CTL target structure on YAC-1 cells. The activity against YAC-1 cells in spleen suspensions of both tumor-bearing and control (A/Sn X C57BL/6)F1 mice seemed to be an NK phenomenon entirely, because blocking occurred neither with RBL-5 cells nor with freshly prepared YAC lymphoma cells, both of which have low sensitivity to NK effects. Spleen cells from (A/Sn X C57BL/6)F1 regressors were stimulated to a secondary CTL response in vitro by YAC-1 and RBL-5 cells, which further indicated that YAC-1 cells express the M-MuSV-specific CTL target structure. These experiments also showed that YAC-1 cells could be lysed by CTL. YAC-1 cells did not induce a secondary response in A/Sn regressors, which indicated a lack of M-MuSV-induced CTL memory cells in this strain. The result was not due to a general unreactivity of A/Sn mice against YAC-1 cells, because spleen cells from YAC-1-immunized mice exhibited strong T-cell-mediated anti-YAC-1 activity after in vitro cultivation. Thus tumor regression seems to occur without the production of CTL in A/Sn mice.
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907
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Becker S, Haskill S. Non-T-cell-mediated cytotoxicity in mice with tumors induced by Moloney murine sarcoma virus (M-MuSV). II. Granulocyte-mediatd cytotoxicity against autochthonous target cells isolated from M-MuSV-induced tumors. J Natl Cancer Inst 1980; 65:469-75. [PMID: 6249952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Experiments were performed in A/Sn and A/WySn mice to determine the specificity, organ distribution, and further characteristics of the small non-T-cells that infiltrate Moloney murine sarcoma virus (M-MuSV)-induced tumors and are capable of killing the autochthonous M-MuSV-infected tumor target cells. Continuous bovine serum albumin density gradient separation proved to be the most effective method of enriching the cytotoxic cells. Increase in cytotoxic activity, measured by both the 51Cr release assay and the microcytotoxicity test, paralleled the increase in the proportion of polymorphonuclear leukocytes in mice bearing M-MuSV-induced tumors also contained myeloperoxidas-positive cytotoxic effector cells. The cytotoxic activity appeared to be nonspecific. Various mouse tumor lines as well as allogeneic fibroblasts were sensitive to these effector cells. The only target cell type not affected was the syngeneic fibroblast. In addition to the tumor mass, cytotoxic cells were found in the bone marrow, blood, and spleens of mice bearing M-MuSV-induced tumors. Only bone marrow cells from normal mice exhibited cytotoxic activity. Thus cells of the myelopoietic series may be important in fighting M-MuSV-induced tumors by way of their direct cytotoxic effects on the infected cells.
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908
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Hughes W, Van Deventer G, Shabot M, Becker S. Antral gastrin concentration in gastric ulcer disease. The finding of high concentrations in a few patients. Dig Dis Sci 1980; 25:568-74. [PMID: 7398515 DOI: 10.1007/bf01318868] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Antral gastrin concentratin (AGC) was measured in forceps biopsy specimens of prepyloric mucosa obtained at endoscopy in 65 patients with various kinds of gastric ulcer and in 31 nonulcer control patients. AGC in 32 patients with a lesser curvature gastric ulcer, 10.0 +/- 2.0 (mean +/- 1 SE) ng gastrin/mg tissue was significantly less (P < 0.01) than AGC in 31 nonulcer control patients, 14.4 +/- 1.4. AGC was similar to the control values in 23 patients with a pyloric channel ulcer, 15.2 +/- 1.7; 5 patients with a greater curvature ulcer, 15.0 +/- 4.8; and 3 patients with both duodenal and gastric ulcers, 15.8 +/- 0.7. AGC was significantly greater (P < 0.01) than the control values in 3 patients with a vagotomy and pyloroplasty and a gastric ulcer, 29.8 +/- 5.0. In contrast with most lesser curvature gastric ulcer patients who had low AGC, 3 gastric ulcer patients had antral gastrin values which were about three times the mean AGC of the controls. Two of these patients had fasting serum gastrin values which were more than twice the mean control fasting serum gastrin. Meal-stimulated integraed gastrin responses in these 3 patients ranged from three to nine times the mean control response. These findings suggest that a high AGC may account for a few instances of increased serum gastrin concentrations in gastric ulcer patients.
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909
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Haskill S, Ritter F, Becker S. Effect of C. parvum on intratumor immunity to the T1699 mammary adenocarcinoma. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1980; 125:454-8. [PMID: 6247400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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910
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Haskill S, Ritter F, Becker S. Effect of C. parvum on intratumor immunity to the T1699 mammary adenocarcinoma. THE JOURNAL OF IMMUNOLOGY 1980. [DOI: 10.4049/jimmunol.125.1.454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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911
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Becker S, Chubb C, Ewing L. Mathematical model of steroidogenesis in rat and rabbit testes. THE AMERICAN JOURNAL OF PHYSIOLOGY 1980; 239:R184-95. [PMID: 7396035 DOI: 10.1152/ajpregu.1980.239.1.r184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The purpose of this study was to develop a mathematical model of testicular steroidogenesis which could not only predict steroid secretion but also could be implemented to test the validity of assumptions used in studies of testicular testosterone biosynthesis in rats and rabbits. Since the two predominant fates of testicular steroids are metabolism and secretion, we hypothesized that the data for construction of the model could be observed testicular steroid secretions and that these data could then be used to elucidate intratesticular steroid conversions. Equations based on steroid secretion by testes perfused in vitro were developed to estimate transition probabilities corresponding to steroid secretion or conversion. The model was tested by comparing the predicted steroid secretion rates with those observed for control testes perfused in vitro. In addition, the transition probabilities determined by the model were used to indicate the predominant series of reactions for converting pregnenolone to testosterone. The results presented herein confirm the capability of the model to predict steroid secretion rates and to predict preferred pathways for testosterone biosynthesis in maximally stimulated testes perfused in vitro. Moreover, the model construction required only algebra and steady-state measurements.
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912
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Becker S, Neumann M, Veltman G. [Cutaneous or intracutaneous tests for diagnosis of inhalation allergies? A comparative study of pollen-free and pollen-containing allergen extracts in cutaneous and intracutaneous testing. II. Study of pollen-containing allergen extracts]. DIE MEDIZINISCHE WELT 1980; 31:868-73. [PMID: 7421508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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913
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Becker S, Perkins H. Ambulatory medical care. N Engl J Med 1980; 302:1316-7. [PMID: 7366710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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914
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Raith L, Prater E, Becker S. [Contact dermatitis due to potassium gold cyanide (author's transl)]. DERMATOLOGISCHE MONATSCHRIFT 1980; 166:382-8. [PMID: 6448175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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915
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Becker S, Hoeffel JC, Worms AM, Pernot C. [Angiographic aspects of the tetralogy of Fallot. Report of 100 cases (author's transl)]. ANNALES DE PEDIATRIE 1980; 27:353-61. [PMID: 7224549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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916
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Neumann M, Becker S, Veltman G. [Cutaneous or intracutaneous testing in the diagnosis of inhalation allergies? Comparative studies of pollen-free and pollen-containing allergen extracts in cutaneous and intracutaneous testing. 1. Pollen-free allergen extracts]. DIE MEDIZINISCHE WELT 1980; 31:786-93. [PMID: 7392932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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917
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Becker S, Haskill S. Characterization of the presumptive sarcoma cells in primary MSV tumors. Int J Cancer 1980; 25:543-50. [PMID: 6989765 DOI: 10.1002/ijc.2910250417] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Presumptive sarcoma cells have been isolated from primary MSV tumors induced in normal, immunosuppressed (ALG) and athymic nude mice. These cells were atypical in appearance, induced tumors in secondary hosts and expressed the viral antigens gp70, p30 and p12. In vitro growth characteristics of the MSV cells were tested in a variety of assays defining cell transformation. None of these indicated that the virus-positive cells were transformed. Sex chromosome marker studies were carried out to determine if secondary tumor arose solely from proliferation of donor cells or through infection of host tissue. Tumors from female irradiated mice induced by injections of tumor cells derived from male mice contained a high proportion of metaphases of non-donor origin, indicating that infection is an important but not the sole mechanism involved in tumor transfer. These data also demonstrated that many of the sarcoma cells are damaged as a result of infection as shown by the presence of chromosome breaks and aneuploid metaphases. Histologic sections of both regressor and progressor tumors showed that the virus-positive cells were scattered as single cells surrounded by inflammatory cells, rather than as masses of dividing virus-positive cells found in the MSV-induced transplanted tumor. Collectively, these data support the contention that the MSV tumor is the manifestation of a response to a highly noxious virus infection rather than a tumor of dividing, transformed malignant cells.
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MESH Headings
- Animals
- Antibodies, Viral
- Antigens, Viral
- Cell Line
- Cell Separation
- Cell Transformation, Viral
- Chromosomes
- Culture Media
- Female
- Immunoenzyme Techniques
- Immunosuppressive Agents
- Leukemia, Experimental/genetics
- Leukemia, Experimental/immunology
- Leukemia, Experimental/pathology
- Male
- Mice
- Mice, Nude
- Moloney murine leukemia virus/immunology
- Sarcoma, Experimental/genetics
- Sarcoma, Experimental/immunology
- Sarcoma, Experimental/pathology
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918
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Becker S, Haskill S. Non-T-cell-mediated cytotoxicity in MSV tumor-bearing mice. III. Macrophage-mediated cytotoxicity against autochthonous MSV tumor-isolated target cells. Int J Cancer 1980; 25:535-41. [PMID: 6966262 DOI: 10.1002/ijc.2910250416] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cytotoxic macrophages have been isolated from Moloney sarcoma virus (MSV) tumors induced in uncompromised, immunosuppressed and athymic nude mice. Macrophages from compromised mice were at least as active as those from uncompromised mice when tested against the autochthonous MSV target cells. Although both cytolytic and cytostatic activity could be demonstrated with all tumor-derived macrophages, cytostatic and cytolytic effects could be distinguished from each other only at high effector target-cell ratios. A variety of target cells were compared for sensitivity to the various tumor-associated macrophages. The autochthonous virus-infected MSV-target cells appeared to be more sensitive to the macrophage effects than fastgrowing, established cell lines. Normal embryo fibroblasts were only slightly affected. Peritoneal exudate cells from tumor-bearers were much less active than either the tumor-isolated macrophages or bone-marrow culture-derived macrophages. Both were more active than control peritoneal cells. Although no quantitative or qualitative differences in macrophage activity could be detected in mice with regressing lesions and immuno-compromised mice with progressing lesions, the ratio of macrophages to "sarcoma" cells was three to five times higher in regressing tumors.
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919
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Becker S, Hoeffel JC, Worms AM, Pernot C. [Angiographic aspects of Fallot's tetralogy. Report of 100 cases (author's transl)]. ANNALES DE RADIOLOGIE 1980; 23:23-31. [PMID: 7356276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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920
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Kaufman K, Shortell S, Becker S, Neuhauser D. The effects of board composition and structure on hospital performance. HOSPITAL & HEALTH SERVICES ADMINISTRATION 1979; 24:37-62. [PMID: 10240132] [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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921
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MacLean G, Becker S. Studies of the psychosocial adjustment of the hearing-impaired: I. Adolescents and their families a pilot study. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 1979; 24:744-8. [PMID: 519643 DOI: 10.1177/070674377902400807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There is a general pessimistic view found in the literature that defends a hypothesis that the consequences of a severe hearing impairment on psychosocial development aare many and severe. This pilot study of 20 adolescents who had experienced a profound hearing impairment from birth had the purpose of clarifying this issue. The findings of the study were not compatible with such pessimism. It is concluded that the teaching of an oral means of communication which facilitates education within a mainstreamed system, is compatible with good psychosocial adjustment. To confirm this optimism and to delineate the variables in good development, further study employing comparison groups is needed.
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922
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Becker S, Hoeffel JC, Worms AM, Pernot C. [Differential diagnosis of the tetralogy of Fallot (author's transl)]. JOURNAL DE RADIOLOGIE 1979; 60:509-19. [PMID: 536960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The differential diagnosis of the tetralogy of Fallot includes three main types of condition: 1) Malformations which differ from Fallot in their extent, such as interventricular communications of type IV and pulmonary atresia with an open septum. 2) Malposition of the large vessels with pulmonary stenosis (double opening in the right ventricle, complete or corrected transposition). 3) Malformations associating an intraventricular shunt and another type of pulmonary stenosis (double chambered ventricle, interventricular membranous and muscular communication, common atrioventricular canal, single ventricle). An analysis of the findings in angiographic images can provide precise differential diagnosis of these pseudo-Fallots.
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923
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Becker S, Glidden LM. Imitation in EMR boys: model competency and age. AMERICAN JOURNAL OF MENTAL DEFICIENCY 1979; 83:360-6. [PMID: 420260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The effects of model age and competence on the imitation behavior of 80 EMR boys were investigated. Subjects viewed a videotape in which either an adult or a peer performed a motor task with either high or low competence. In addition, the models engaged in four different kinds of off-task social behavior. The results indicated that the boys imitated the off-task social behavior emitted by high-competent and peer models more than low-competent and adult models. In addition, high-competent models were imitated more than were low-competent models on the motor-skill task, but no significant age effect was found. The efficacy of modeling as an instructional strategy was discussed, and we concluded that EMR boys should be exposed to competent models, especially peers, who emit a repertoire of adaptive behavior.
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924
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Becker S, Stendahl O, Magnusson KE. Physico-chemical characteristics of tumour cells susceptible to lysis by natural killer (NK) cells. IMMUNOLOGICAL COMMUNICATIONS 1979; 8:73-83. [PMID: 105988 DOI: 10.3109/08820137909044708] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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925
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Becker S, Kiessling R, Lee N, Klein G. Modulation of sensitivity to natural killer cell lysis after in vitro explantation of a mouse lymphoma. J Natl Cancer Inst 1978; 61:1495-8. [PMID: 281556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
On the basis of studies indicating that natural killer (NK) cells of the mouse can selectively kill certain syngenetic, allogeneic, and xenogeneic tumor cells in short-term Cr release assays and that cell lines established in vitro are more sensitive than the corresponding ascites tumor cells passaged in vivo, the kinetics of the modulation to increased sensitivity was studied after in vitro explanation of the A/Sn mouse-derived YAC ascites lymphoma. Sensitivity to NK lysis appeared after 3 weeks of culturing and reached the level of the continuously cultured line after 2 months. With the more sensitive competition assay, a change could be demonstrated as early as 2--24 hours of culture. The expression of the Moloney murine leukemia virus-determined, cell-surface antigen, measured by quantitative absorption with intact cells, increased in parallel with the NK sensitivity. In contrast, the H-2 alloantigen concentration decreased during in vitro culture.
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926
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Becker S, Hadding U, Schorlemmer HU, Bitter-Suermann D. Demonstration of high-affinity binding sites for C3a anaphylatoxin on guinea-pig platelets. Scand J Immunol 1978; 8:551-5. [PMID: 734357 DOI: 10.1111/j.1365-3083.1978.tb00555.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
3H-serotonin release from guinea-pig platelets was demonstrated to be the consequence of C3a binding to these cells. A Scatchard analysis of dose-response data of the 125I-C3a binding pattern to guinea-pig platelets pointed to the existence of binding sites with high and low affinity for the C3a molecule (HA and LA receptors). HA receptors are specific for C3a with intact C-terminal arginine. whereas C3adesarg only interacts with LA receptors. The release of serotonin may be induced by a combined reaction of C3a with HA receptors and LA receptors on the platelet membrane.
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927
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Becker S. [Value and method of the urease test in the differentiation of Trichophyton rubrum and Trichophyton mentagrophytes]. DERMATOLOGISCHE MONATSCHRIFT 1978; 164:372-4. [PMID: 680296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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928
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Meuer S, Becker S, Hadding U, Bitter-Suermann D. The anaphylatoxic peptide C3a of guinea pig complement. I. Purification, physicochemical and antigenetic properties. ZEITSCHRIFT FUR IMMUNITATSFORSCHUNG. IMMUNOBIOLOGY 1978; 154:135-46. [PMID: 77089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Highly purified guinea pig C3a was obtained after specific cleavage of isolated C3 by the alternative pathway enzyme VF-B in a one step procedure. It turned out to be a low molecular weight peptide with basic character (M.W. 9500; isoelectric point above 9.4). C3a represents an antigenetic determinant of its own in the native C3 molecule, different from the B determinant. Guinea pig C3a resistant to 100 degrees C for 10 minutes. Its smooth muscle contracting activity can be destroyed by trypsin and carboxypeptidase B. These findings indicate that guinea pig C3a is quite similar to human C3a.
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929
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Becker S, Meuer S, Hadding U, Bitter-Suermann D. Platelet activation: a new biological activity of guinea-pig C3a anaphylatoxin. Scand J Immunol 1978; 7:173-80. [PMID: 653315 DOI: 10.1111/j.1365-3083.1978.tb00441.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
3H-serotonin-release from labelled gp-platelets is established as a sensitive method for testing a new biological activity of gp-C3a anaphylatoxin in an autologous situation. Time-, dose- and temperature-dependent release reactions as well as specific inhibition by carboxypeptidase B and anti-C3a antibodies show that C3a is a potent and specific inducer of platelet activation. Inactive C3a does not induce 3H-serotonin-release but specifically inhibits the action of C3a on platelets.
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930
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Galili N, Devens B, Naor D, Becker S, Klein E. Immune responses to weakly immunogenic virally induced tumors. I. Overcoming low responsiveness by priming mice with a syngeneic in vitro tumor line or allogeneic cross-reactive tumor. Eur J Immunol 1978; 8:17-22. [PMID: 639838 DOI: 10.1002/eji.1830080105] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This report describes model systems which show low primary in vitro syngeneic cytotoxic responses to a Moloney-induced YAC tumor (syngeneic in A mice) and a Rauscher-induced RBL5 tumor (syngeneic in C57BL/6 mice) and examines different approaches to overcome these defects. Two major findings were obtained: (a) spleen cells from A mice, injected with tumor cells from an in vitro tumor line YAC-1, derived from YACL, could generate a significant syngeneic cytotoxic response. In contrast, spleen cells from A mice injected with tumor cells from the in vivo tumor line failed to generate a syngeneic cytotoxic response. Thus, tumor cells from the in vitro line were more immunogeneic that those from the in vivo line. (b) Spleen cells from A mice which were injected with the cross-reactive allogeneic tumor RBL5, could generate significant cytotoxic responses to the syngeneic tumors YAC and YAC-1. Similarly, spleen cells from C57BL/6 mice injected with the cross-reactive allogeneic tumor YAC-1, could generate a significant cytotoxic response to the syngeneic tumor RBL5. Thus, cross-reactive allogeneic tumors could stimulate syngeneic cytotoxicity. The theoretical and the practical implications of these studies are discussed.
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931
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Golden WR, Becker S. The Connecticut Valley Section, AACC: a brief history. Clin Chem 1977; 23:1933-4. [PMID: 332411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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932
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Golden WR, Becker S. The Connecticut Valley Section, AACC: a brief history. Clin Chem 1977. [DOI: 10.1093/clinchem/23.10.1933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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933
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Cornain S, Becker S, Klein E. Sensitization of rat T cells to syngeneic tumor cultures by cocultivation in diffusion chambers. ZEITSCHRIFT FUR IMMUNITATSFORSCHUNG. IMMUNOBIOLOGY 1977; 153:248-64. [PMID: 145105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Total population and T cell enriched fractions of rat spleen were cultivated in diffusion chambers implanted intraperitoneally to mice and rats. 10-16% of the input cells were recovered after 5 days. When the chambers were carried in the xenogeneic environment activation occurred as indicated by blastogenesis and non-discriminative cytotoxicity. Specific activation of the T population was induced by mixed lymphocyte-tumor culture in chambers implanted in rats. The presence of tumor cells induced blastogenesis, elevation of the proportion of Fc receptor positive cells and generated cytotoxic cells to the sensitizer tumor. The precursor of cytotoxic cells did not have Fc or C3 receptors since nylon wool colum passed fractions depleted from these cells by elimination of EA- or EAC-rosettes were also activated.
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934
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Cornain S, Becker S, Klein E. Sensitization of Rat T Cells to Syngeneic Tumor Cultures by Cocultivation in Diffusion Chambers. ACTA ACUST UNITED AC 1977. [DOI: 10.1016/s0340-904x(77)80006-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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935
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Abstract
Tumors of the major salivary glands are reviewed according to classification, location, surgical procedure and end results. Our data of the incidence of benign and malignant tumors show that the most commonly involved area is the parotid gland and the most frequent is of the mixed variety. In the parotid region 80 percent are benign and 20 percent are malignant; whereas, in the submandibular gland, the malignant and benign tumors are equally distributed. The need for an extensive surgical attack and inclusion of contiguous structure is dictated by the nature of the malignant disease. The role of postoperative irradiation is discussed as is the indication for neck dissection. Management of the facial nerve, relative to malignant tumors of the parotid gland, is considered in detail.
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936
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937
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Chopra S, Simmons DH, Cassan SM, Becker S, Ben-Isaac FE. Bronchial obstruction by incorporation of aspirated vegetable material in the bronchial wall. THE AMERICAN REVIEW OF RESPIRATORY DISEASE 1975; 112:717-20. [PMID: 1190620 DOI: 10.1164/arrd.1975.112.5.717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The bronchoscpie, cytologic, and histologic features of a foreign body of vegetable origin embedded in the wall of a bronchus are described. The utility of bronchial biopsy in the diagnosis of this obscure cause of bronchial obstruction is emphasized, and the mode of treatment described.
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938
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Becker S, Kohler HJ, Weiss C. Geometrieoptimierung kleiner Moleküle im Allvalenzelektronen-MO-Formalismus mit Hilfe der SIMPLEX- und Gradientenmethode. ACTA ACUST UNITED AC 1975. [DOI: 10.1135/cccc19750794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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939
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Iyer VN, Iyer RV, Palchoudhury SR, Becker S, Stevenson I. An aspect of the physiology of strains carrying a dnaB mutation. Impairment in F piliation and its phenotypic reversal. MOLECULAR & GENERAL GENETICS : MGG 1974; 133:111-22. [PMID: 4614062 DOI: 10.1007/bf00264832] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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940
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Becker S. Results of a survey of diagnostic and therapeutic x-ray machines, Suffolk County, New York, 1972. RADIATION DATA AND REPORTS 1973; 14:397-400. [PMID: 4724909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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941
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Richter E, Zilly W, Brachtel D, Becker S. [Tolerance of barbiturates in patients with viral hepatitis]. Minerva Med 1972; 63:4143-5. [PMID: 4404494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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942
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Richter E, Zilly W, Brachtel D, Becker S. [Barbiturate tolerance in patients with acute hepatitis]. Dtsch Med Wochenschr 1972; 97:254-5. [PMID: 4621705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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943
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Becker S. Results of a followup radiation survey on color television sets, Suffolk County, New York. RADIOLOGICAL HEALTH DATA AND REPORTS 1971; 12:457-8. [PMID: 5117858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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944
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Bergmann P, Dürrschmidt V, Becker S. [Chemical synovectomy with osmium acid in rheumatoid arthritis]. DAS DEUTSCHE GESUNDHEITSWESEN 1971; 26:600-3. [PMID: 5576687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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945
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Allenberg JR, Becker S, Papcke U, Schmier J. [Pharmacological central sympathicus block before and during experimental hemorrhagic shock]. ARZNEIMITTEL-FORSCHUNG 1970; 20:Suppl 11a:1675+. [PMID: 4395295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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946
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Becker S. An investigation of x radiation from color television receivers in Suffolk County, New York. RADIOLOGICAL HEALTH DATA AND REPORTS 1970; 11:179-82. [PMID: 5427335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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947
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Becker S, May P. Thin-layer chromatography of urine sugars. Am J Clin Pathol 1968; 49:436-9. [PMID: 5645099 DOI: 10.1093/ajcp/49.3_ts.436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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948
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Becker S, May P. Thin-layer chromatography of urine sugars. TECHNICAL BULLETIN OF THE REGISTRY OF MEDICAL TECHNOLOGISTS. AMERICAN SOCIETY OF CLINICAL PATHOLOGISTS. REGISTRY OF MEDICAL TECHNOLOGISTS 1968; 38:30-3. [PMID: 5659216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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949
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950
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Tassoni EM, Durant JR, Becker S, Kravitz B. Cytogenetic studies in multiple myeloma: a study of fourteen cases. Cancer Res 1967; 27:806-10. [PMID: 6025735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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