3601
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Chen Z, Harding GW, Towe AL. Effect of strychnine on the cutaneous responsiveness of wide-field cerebral neurons after depression by pentobarbital. Exp Neurol 1983; 81:770-5. [PMID: 6884484 DOI: 10.1016/0014-4886(83)90343-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A small dose of pentobarbital administered intravenously to a chloralose-anesthetized cat rendered pericruciate wide-field neurons unresponsive to cutaneous stimulation without altering the responsiveness of small-field neurons. Under this condition, topical application of strychnine, which is known to markedly enhance the responses of small-field neurons, was found to restore the responsiveness of the wide-field neurons, but only to stimulation of the topographically focal cutaneous site. Wide-field responsiveness returned only after the effect of pentobarbital had disappeared and the cortex returned to its normal chloralose condition. This result is consistent with the idea that small-field neurons have excitatory synaptic connections with the wide-field neurons in their immediate neighborhood.
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3602
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Chen Y, Zeeck A, Chen Z, Zähner H. Metabolic products of microorganisms. 222. beta-Oxotryptamine derivatives isolated from Streptomyces ramulosus. J Antibiot (Tokyo) 1983; 36:913-5. [PMID: 6885642 DOI: 10.7164/antibiotics.36.913] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3603
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Herrmann F, Sieber G, Chen Z, Enders B, Komischke B, Rühl H. Further evidence for T cell abnormalities in chronic lymphocytic leukaemia of the B cell type. Clin Exp Immunol 1983; 53:109-14. [PMID: 6347474 PMCID: PMC1535548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Functional properties were studied in the purified T cell fraction of patients with chronic lymphocytic leukaemia of the B cell type (B-CLL). This analysis included the evaluation of T suppressor activity when investigated patients' T cells were co-cultured together with allogenic normal B and OKT4 enriched T cells in the presence of pokeweed mitogen (PWM). The Ig secreting cells (ISC) were assessed in a reverse haemolytic plaque assay (RHPA). Antibody-dependent cytotoxicity (ADCC) and natural killer activity (NK) were determined in a 51Cr release assay. Furthermore, purified T cells reactive with the monoclonal antibody HNK1, known to recognize most effector cells in ADCC and NK, were enumerated using an indirect immunofluorescence. Our results revealed increased T suppressor cell activity and markedly deficient NK activity in peripheral blood lymphocytes (PBL), T cell and T gamma cell fractions from B-CLL patients, whereas ADCC potential was only increased in T cells and T gamma cells. Accordingly, T cells were recognized by HNK1 in greater numbers in B-CLL patients than in healthy subjects. Our data suggest that there may be a link between our findings and the hypogammaglobulinaemia as well as the increased incidence of second neoplasias reported in CLL.
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3604
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Chandler DB, Giri SN, Chen Z, Hyde DM. The in vitro synthesis and degradation of prostaglandins during the development of bleomycin-induced pulmonary fibrosis in hamsters. Prostaglandins Leukot Med 1983; 11:11-31. [PMID: 6192453 DOI: 10.1016/0262-1746(83)90105-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Subsequent to optimization of conditions for enzyme assay, we examined the in vitro synthesis and degradation of prostaglandins by the lung during the development of bleomycin-induced pulmonary fibrosis in hamsters. It was found that the microsomal protein content on a per lung basis was significantly increased to 144, 129, 134, and 121% of control (2.3 mg protein/lung) at 4, 7, 14 and 21 days post-treatment, respectively. The synthesis of PGD2 was significantly elevated to 10.2, 10.8, and 12.5 nmoles/lung at 7, 21 and 28 days, respectively, as compared to the control value of 5.6 nmoles/lung. Significant increases in PGF2 alpha synthesis from the control value of 3.3 nmoles/lung to 5.2, 8.2 and 5.5 nmoles/lung were found at 4, 7 and 21 days post-treatment, respectively. The synthesis of PGE2 also showed significant increases above the control value of 6.1 nmoles/lung to 10.5, 12.2 and 11.0 nmoles/lung at 7, 21 and 28 days post-treatment, respectively. Similarly, the synthesis of 6-keto-PGF1 alpha was significantly increased to 7.4, 7.5 and 8.6 nmoles/lung at 7, 21 and 28 days post-treatment, respectively, as compared to the control value of 4.4 nmoles/lung. The synthesis of TxB2 was also significantly increased from the control value of 3.9 nmoles/lung to 7.5 and 6.4 nmoles/lung at 7 and 21 days post-treatment, respectively. Accompanying the increased synthesis of prostaglandins in general, the in vitro degradation of PGF2 alpha was significantly increased from the control value of 71.1 nmoles/lung to 173.5, 131.7 and 143.3 nmoles/lung at 2, 4 and 7 days after bleomycin treatment, respectively. We conclude that bleomycin-induced pulmonary fibrosis leads to changes in prostaglandin synthesis and degradation possibly as a result of an accompanying inflammatory response and resident cellular proliferation.
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3605
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Marks PA, Chen Z, Banks J, Rifkind RA. Erythroleukemia cells: variants inducible for hemoglobin synthesis without commitment to terminal cell division. Proc Natl Acad Sci U S A 1983; 80:2281-4. [PMID: 6572977 PMCID: PMC393803 DOI: 10.1073/pnas.80.8.2281] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Murine erythroleukemia cells (MELC) are virus-transformed erythroid precursors that appear to be blocked at an erythroid precursor stage comparable to the erythroid colony-forming unit (CFU-e). These cells are useful in examining factors regulating terminal differentiation. Induced MELC are characterized by a coordinated program of gene expression, including commitment to terminal cell division, accumulation of globin mRNAs and corresponding hemoglobins, and accumulation of several other proteins, including the chromatin-associated protein H1(0). Two cloned variant cell lines, DR10 and R1, have been developed from inducer-sensitive DS19 cells by selection for inducer resistance. DR10 and R1 cells fail to display commitment to terminal cell division when cultured with dimethyl sulfoxide (Me2SO), hexamethylene bisacetamide (HMBA), or butyric acid. Both cell lines are induced by all three agents to accumulate H1(0). DR10 cells are resistant to Me2SO-mediated accumulation of hemoglobin but are sensitive to HMBA- or butyric acid-mediated accumulation. R1 cells are resistant to Me2SO- and HMBA-mediated accumulation of hemoglobin but are sensitive to butyric acid-mediated accumulation. Both DR10 and R1 are commitment-negative MELC variants, displaying variable responses to inducers with respect to other features of terminal erythroid cell differentiation.
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3606
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Chen Z, Bode W. Refined 2.5 A X-ray crystal structure of the complex formed by porcine kallikrein A and the bovine pancreatic trypsin inhibitor. Crystallization, Patterson search, structure determination, refinement, structure and comparison with its components and with the bovine trypsin-pancreatic trypsin inhibitor complex. J Mol Biol 1983; 164:283-311. [PMID: 6188842 DOI: 10.1016/0022-2836(83)90078-5] [Citation(s) in RCA: 173] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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3607
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Bode W, Chen Z, Bartels K, Kutzbach C, Schmidt-Kastner G, Bartunik H. Refined 2 Å X-ray crystal structure of porcine pancreatic kallikrein A, a specific trypsin-like serine proteinase. J Mol Biol 1983; 164:237-82. [PMID: 6551452 DOI: 10.1016/0022-2836(83)90077-3] [Citation(s) in RCA: 197] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3608
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Chen Z. [The relationship between root growth and the cryptotanshinone content of Salvia miltiorrhiza]. Zhong Yao Tong Bao 1983; 8:2-3. [PMID: 6220832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3609
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Chen Z, Wang ZY, Wang HL, Chen SR, Chen SJ, Wu CF, Zhi LM, Shi BZ, Yang Q, Li JL. Study on hemophilia A carriers. Procedures for genetic counselling. Chin Med J (Engl) 1983; 96:55-9. [PMID: 6403313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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3610
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Chen Z. [The relationship between root growth and cryptotanshinone content of Salvia miltiorrhiza]. Zhong Yao Tong Bao 1983; 8:2-3. [PMID: 6235007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3611
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Chen Z, Wang ZY, Wang HL, Chen SR, Chen SJ, Wu CF, Zhi LM, Shi BZ, Yang Q, Li JL. Procedures for detection and discrimination of hemophilia A carriers. Chin Med J (Engl) 1982; 95:593-602. [PMID: 6814862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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3612
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Chen Z, Qian C, Qin M, Xu X, Xiao Y. Recent advances in anther culture of Hevea brasiliensis (Muell.-Arg.). Theor Appl Genet 1982; 62:103-108. [PMID: 24270556 DOI: 10.1007/bf00293340] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1981] [Accepted: 11/15/1981] [Indexed: 06/02/2023]
Abstract
The yield of pollen embryoids from cultured Hevea anthers was increased 4 fold by optimizing the proportion of ammonium nitrate to potassium nitrate in the dedifferentiation medium. For optimal differentiation of pollen embryoids, kinetin, 2,4-D and α-naphtalene acetic acid are required. Anther culture for 50 days on the dedifferentiation medium is a prerequisite for the selective development of calli and embryoids from microspores.The determination of chromosome numbers in embryoids, plantlets and regenerated trees reveals that they originate from (poly)haploid pollen grains (n=2x=18). Aneuploid, triploid (3x=27) and tetraploid (4x=36) cells were encountered in increasing frequencies as the embryoids and plants developed. A few haploid cells with 9 chromosomes were consistently observed. Buds from shoots with mixoploid chromosome numbers can be grafted and the change in the chromosome constitution of the developing new shoots followed.
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Affiliation(s)
- Z Chen
- Institute of Genetics, Academia Sinica, Beijing, China
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3613
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Nakada G, Masuda F, Ouishi Y, Shoji R, Chen Z, Onishi T, Machida T, Sasaki T, Tanino M, Furusato M, Suzuki R, Aizawa S, Ishikawa E. [The study of the ureter and/or bladder tumors associated with urothelial lesion of the renal pelvis]. Nihon Hinyokika Gakkai Zasshi 1982; 73:584-9. [PMID: 7176276 DOI: 10.5980/jpnjurol1928.73.5_584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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3614
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Chen Z, Banks J, Rifkind RA, Marks PA. Inducer-mediated commitment of murine erythroleukemia cells to differentiation: a multistep process. Proc Natl Acad Sci U S A 1982; 79:471-5. [PMID: 6952199 PMCID: PMC345765 DOI: 10.1073/pnas.79.2.471] [Citation(s) in RCA: 71] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
There are a number of agents which, when added to cultures of murine erythroleukemia cells (MELC), markedly increase the probability of commitment to express the characteristics of terminal erythroid differentiation, including loss of proliferative capacity and increased accumulation of globin mRNA and hemoglobin. Some characteristics of inducer-mediated commitment of MELC to terminal erythroid differentiation were examined by determining the effects of dexamethasone (an inhibitor of inducer-mediated MELC differentiation) and of hemin (an inducer of globin mRNA accumulation). Previously, it was shown that exposure of MELC to hexamethylene-bisacetamide (HMBA) leads to commitment, detectable within 12 hr. MELC cultured with both HMBA and dexamethasone do not express commitment. MELC transferred from culture with HMBA and dexamethasone to cloning medium without these agents express commitment to terminal erythroid differentiation, indicating that MELC retain a "memory" for some early HMBA-mediated changes leading to commitment which occur even in the presence of the inhibitory steroid. The kinetics of commitment in experiments in which exposure to HMBA is interrupted, or dexamethasone is added to the culture in HMBA, suggest that there is a rate-limiting step early in the commitment process. The memory for this step persists for more than one cell cycle. Addition of hemin to cultures with HMBA and dexamethasone initiated accumulation of globin mRNA but does not reverse the steroid-mediated inhibition of terminal cell division (that is, the cells retain their proliferative capacity). Inducer-mediated MELC commitment is associated with accumulation of the chromatin protein IP25; dexamethasone does not inhibit this accumulation. Accumulation of IP25 may be inducer-related, but it is not sufficient to cause expression of terminal erythroid differentiation.
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3615
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Song R, Chen Z, Yang P, Yue J. Reconstruction of the external ear. Clin Plast Surg 1982; 9:49-52. [PMID: 7094524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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3616
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Masuda F, Chen Z, Nakada G, Onishi T, Machida T, Hishinuma H. [Computed tomography in the evaluation of post-nephrectomy renal tumor patients (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1981; 72:1177-83. [PMID: 7328972 DOI: 10.5980/jpnjurol1928.72.9_1177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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3617
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Masuda F, Onishi T, Sasaki T, Arai Y, Shoji R, Chen Z, Nakada G, Machida T. [Renal angiographic and computed tomographic evaluation of local extension of renal cell carcinoma (author's transl)]. Nihon Jinzo Gakkai Shi 1981; 23:1153-67. [PMID: 7321320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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3618
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Onishi T, Masuda F, Sasaki T, Arai Y, Shoji R, Chen Z, Nakada J, Machida T. [Angiographic staging of renal cell carcinoma (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1981; 72:435-444. [PMID: 7289302 DOI: 10.5980/jpnjurol1928.72.4_435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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3619
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Masuda F, Sasaki T, Arai Y, Shoji R, Chen Z, Nakada G, Onishi T, Higashi Y, Machida T. [Computed tomographic evaluation of staging of renal cell carcinoma (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1981; 72:1-9. [PMID: 7277934 DOI: 10.5980/jpnjurol1928.72.1_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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3620
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Masuda F, Chen Z, Oishi Y, Machida T. [CT diagnosis of tumor thrombus of the renal vein and inferior vena cava (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1980; 71:544-51. [PMID: 7431709 DOI: 10.5980/jpnjurol1928.71.6_544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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3621
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Chen Z. [Chemotherapy of oral and maxillofacial malignant tumors by arterial infusion (report of 20 cases) (author's transl)]. Zhonghua Kou Qiang Ke Za Zhi 1980; 15:92-4. [PMID: 6937339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3622
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Masuda F, Sasaki T, Shoji R, Chen Z, Machida T. [Renal cell carcinoma extending into the inferior vena cava (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1979; 70:1060-71. [PMID: 522327 DOI: 10.5980/jpnjurol1928.70.10_1060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3623
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Masuda F, Hishinuma H, Sakai T, Arai Y, Shoji R, Chen Z, Machida T. [Renal function after ligation of the right renal vein in dogs (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1979; 70:799-809. [PMID: 41122 DOI: 10.5980/jpnjurol1928.70.7_799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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3624
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Abstract
The binding of imipramine to plasma proteins was studied by equilibrium gel filtration. Imipramine was highly bound to lipoproteins as well as to other plasma proteins. The binding to the lipoproteins was higher in hyperlipoproteinemic patients than in normal subjects and correlated well with both plasma cholesterol and triglyceride levels. The overall percent binding of imipramine was also higher in hyperlipoproteinemic patients than in normal subjects. It is concluded that the varying degree of binding of imipramine to plasma proteins as a result of varying lipoprotein concentrations, as well as the special nature of the binding to lipoproteins, may be of kinetic and possibly clinical significance in hyperlipoproteinemic individuals.
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3625
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Shoji R, Machida T, Masuda F, Sasaki T, Chen Z, Okazaki T, Tashiro K. [Transcatheter embolization of renal adenocarcinoma: serum enzyme activities and isoenzyme patterns following embolization (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1979; 70:207-13. [PMID: 439525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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3626
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3627
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Chen Z, Machida T, Masuda F, Miki M, Sasaki T, Ueda M, Tanino M, Shoji R, Akasaka Y. [Leiomyosarcoma of the kidney: report of two cases (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1978; 69:1512-21. [PMID: 739711 DOI: 10.5980/jpnjurol1928.69.11_1512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3628
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Masuda F, Sasaki T, Hishinuma H, Arai Y, Shoji R, Chen Z, Machida T. [Renal autotransplantation (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1978; 69:1000-18. [PMID: 362030 DOI: 10.5980/jpnjurol1928.69.8_1000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3629
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Masuda F, Hishinuma H, Sasaki T, Arai Y, Shoji R, Teramoto K, Yanagisawa M, Chen Z, Machida T. [Vaginal metastasis from renal cell carcinoma: routes of metastasis (author's transl)]. Nihon Hinyokika Gakkai Zasshi 1978; 69:472-9. [PMID: 671905 DOI: 10.5980/jpnjurol1928.69.4_472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3630
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Danon A, Chen Z, Kaplanski J. [Digoxin plasma levels as a guide to treatment]. Harefuah 1976; 91:76-8. [PMID: 976840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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