2501
|
Zhao J, Zhang CY, Xu DM, Huang GQ, Xu YL, Wang ZY, Fang SD, Chen Y, Gu YL. Further study of pollen typhae's effects on the production of tPA and PGI, by cultured endothelial cells. Thromb Res 1989; 56:677-85. [PMID: 2517363 DOI: 10.1016/0049-3848(89)90285-5] [Citation(s) in RCA: 7] [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
We had reported that Pollen Typhae, a Chinese traditional herbal medicine could reduce atherosclerotic plaque formation in experimental animals. Fraction IV isolated from Pollen Typhae had the ability to raise tPA and PGI2 productions by cultured porcine aortic endothelial cells (EC). In this paper we reported that F.IV was divided chemically into four subfractions named SubF.1-4 among them SubF.2-2 was further separated from SubF.2, and SubF.4-1 from SubF.4. The six subfractions were tested for their effects on the productions of tPA (125I-fibrin plate method) and PGI2(RIA) by porcine endothelial cells. The results showed that SubF.3 could enhance tPA activity and SubF.2-2 could increase PGI2 level. With Chrono-Log 500 Lumi-Aggregometer, SubF.1,2-2 and 3 were found to be able to inhibit platelet aggregation and release reaction. These data indicated that the mechanisms of Pollen Typhae in its antiatherosclerotic effects were multiple which resulted from various biologic effects exerted by various components of this drug. Chemical analyses were performed and their structures were identified, demonstrating that SubF.2-2 was a flavonoid, while SubF.3 was a group of flavonoids, implying there are some antiatherogenic components in flavonoids.
Collapse
|
2502
|
Montano P, Zhao J, Ramanathan M, Shenoy G, Schulze W, Urban J. Structure of silver microclusters. Chem Phys Lett 1989. [DOI: 10.1016/0009-2614(89)85003-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
2503
|
Zhao J, Qian YJ, Yu Z, Haerle ML, Yin S, Sato H, Pratt WP, Schroeder PA, Bass J. Very-low-temperature electrical resistivity of KRb, KNa, and LiMg alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:10309-10321. [PMID: 9991576 DOI: 10.1103/physrevb.40.10309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
2504
|
Miyatake M, Miike T, Zhao J, Yoshioka K, Uchino M, Usuku G. Possible systemic smooth muscle layer dysfunction due to a deficiency of dystrophin in Duchenne muscular dystrophy. J Neurol Sci 1989; 93:11-7. [PMID: 2681539 DOI: 10.1016/0022-510x(89)90157-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The localization of dystrophin was examined immunohistochemically in various tissues from mice and rats as well as from biopsied human muscle specimens, using polyclonal antibodies against dystrophin. Although dystrophin was completely absent in biopsied muscle specimens from 3 male DMD patients, it was faintly observed in the surface membrane of almost all muscle fibers examined in a female DMD patient. In all controls, human and animal, a strong dystrophin reaction was observed in the surface membrane of intrafusal muscle fibers and at the neuromuscular junctions, rather than in the surface membrane of skeletal and cardiac muscle fibers. In addition, dystrophin was clearly localized in the surface membrane of smooth muscle fibers in the viscera, bronchial system, ureter, and tunica media of blood vessels, including arteries and veins, in all examined animal tissues. In mdx mice, dystrophin was absent in almost all muscle and smooth muscle fibers in various tissues and blood vessels. These results suggested a possible systemic dysfunction of smooth muscle layers, especially those of blood vessels, as well as skeletal muscle fibers, due to a deficiency of dystrophin in Duchenne muscular dystrophy.
Collapse
|
2505
|
Zhao J, Brand JJ. Sequential Events in the Photoinhibition of Synechocystis under Sodium Stress. PLANT PHYSIOLOGY 1989; 91:91-100. [PMID: 16667050 PMCID: PMC1061957 DOI: 10.1104/pp.91.1.91] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Synechocystis (PCC 6714) is photoinhibited at low photon flux density when illuminated in medium devoid of Na(+). Photosynthetic activity and variable fluorescence yield were measured in intact cells during the course of inhibition and during recovery from inhibition in order to characterize sequential inhibitory events. Photosystem II antenna chlorophyll becomes functionally disconnected from the reaction center in the first stage of inhibition, although energy is still transferred from phycobilin pigments to the reaction center. This occurs simultaneously with, or subsequent to, the previously observed (J Zhao, JJ Brand [1988] Arch Biochem Biophys 264: 657-664) inactivation of O(2)-evolution units in Na(+)-stressed cells. Addition of Na(+) to the culture medium rapidly restores the O(2)-evolving system, but reassociation of photosystem II antenna chlorophyll is much slower and requires new protein synthesis. A site nearer to the reaction center of photosystem II becomes inactivated in a secondary inhibitory event. Recovery from secondary inhibition occurs slowly and requires protein synthesis. Cells recovering from secondary inhibition produce active photosystem II units with a fully functional complement of antenna chlorophyll. Synechocystis is photoinhibited in complete (Na(+)-containing) medium when illuminated at high photon flux density. These photoinhibited cells exhibit the same recovery behavior as cells at the second stage of inhibition in Na(+)-deficient medium.
Collapse
|
2506
|
Zhao J, Montano PA. Effect of the electron mean free path in small particles on the extended. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:3401-3404. [PMID: 9992293 DOI: 10.1103/physrevb.40.3401] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
2507
|
Kuang J, Zhao J, Wright DA, Saunders GF, Rao PN. Mitosis-specific monoclonal antibody MPM-2 inhibits Xenopus oocyte maturation and depletes maturation-promoting activity. Proc Natl Acad Sci U S A 1989; 86:4982-6. [PMID: 2662192 PMCID: PMC297540 DOI: 10.1073/pnas.86.13.4982] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
MPM-2, a monoclonal antibody specific for cells in mitosis, recognizes a family of proteins that share a common phosphorylated epitope. In this study we have shown that during the maturation of Xenopus laevis oocytes induced by progesterone, phosphorylation of MPM-2 antigens coincided with the appearance of MPF activity. When MPM-2 (0.7-1.4 micrograms per oocyte) was injected into oocytes prior to progesterone stimulation, MPF activity failed to appear and induction of maturation was inhibited as judged by both germinal-vesicle breakdown and white-spot formation. Further, MPM-2 was able to neutralize as well as immunodeplete MPF activity from mitotic HeLa cell and mature oocyte extracts. These results suggest that MPM-2 recognizes either MPF itself or a protein(s) that regulates MPF activity and that the kinase that phosphorylates MPM-2 antigens may be a key component in the regulation of M-phase induction.
Collapse
|
2508
|
Gendreau R, Billette J, Zhao J, Couture R. Intrinsic origin of atrioventricular nodal functional properties in rabbits. Can J Physiol Pharmacol 1989; 67:722-7. [PMID: 2766103 DOI: 10.1139/y89-116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The goal of the present study was to document the intrinsic origin of atrioventricular nodal functional properties (recovery time, facilitation, and fatigue) in two groups of six superfused isolated rabbit heart preparations. These properties were determined from recovery curves (A2H2 versus H1A2 intervals) obtained with previously defined periodic premature stimulation sequences performed before and after autonomic blockade demonstrated effective with the injection of agonists. In group 1 preparations, the muscarinic cholinergic and beta-adrenergic receptors were blocked with atropine (1 mg/L) and propranolol (1 mg/L), respectively. The blockade reduced the facilitation and increased the fatigue by the direct membranous effect of propranolol. To avoid this effect in group 2 preparations, propranolol was replaced by sotalol (5 mg/L), which in combination with atropine altered neither the presence nor the magnitude of the functional properties. These results show that the origin of the three nodal functional properties is independent from the autonomic nervous system.
Collapse
|
2509
|
Montano PA, Zhao J, Ramanathan M, Shenoy GK, Schulze W. Structure of Ag, Fe and Ge microclusters. ACTA ACUST UNITED AC 1989. [DOI: 10.1007/bf01426915] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
2510
|
Abstract
To investigate the functional significance of dystrophin, we studied various tissues of control and mdx mice, and rats immunohistochemically, using anti-dystrophin antibodies. In control animals, we observed the immunohistochemical localization of dystrophin in synaptic regions such as neuromuscular junctions, the cornea and outer plexiform layer of the retina, the taste buds and neurons in the brain, as well as on the surface membrane of skeletal, cardiac and smooth muscle fibers. In mdx mice, dystrophin was absent from the surface membrane of muscle fibers and the outer plexiform layer of the retina. These results suggest that dystrophin plays an important physiological and/or structural role in the conduction system.
Collapse
|
2511
|
Zhao J. [Advances in experimental research on the effects of anticarcinogenic, tonic herbal medicines on immune function]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1988; 8:754-6. [PMID: 2470524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
2512
|
Landel CP, Zhao J, Bok D, Evans GA. Lens-specific expression of recombinant ricin induces developmental defects in the eyes of transgenic mice. Genes Dev 1988; 2:1168-78. [PMID: 3192078 DOI: 10.1101/gad.2.9.1168] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An expression system for cell lineage ablation in transgenic mice was constructed in which a modified form of the A subunit of ricin, a toxic lectin produced by the castor bean Ricinus communis, can be expressed under the direction of tissue-specific regulatory signals. A chimeric gene was formed by fusing the promoter and 5'-flanking sequences of the lens-specific mouse alpha A-crystallin gene with a modified ricin A cDNA, and this construction was integrated into the germ line of transgenic mice. These animals develop profound microphthalmia with severe developmental defects of the eye, relating primarily to the disorganization and death of cells forming the lens. In addition, this defect is associated with several abnormalities, including eye size, folding of the retina, and ectopic lens material in other regions of the eye. The phenotype of this engineered developmental mutation suggests that the normal development of alpha A-crystallin-producing lens fiber cells is essential for the proper growth, organization, and orientation of optic structures.
Collapse
|
2513
|
Zhao J. [Extramedullary plasmacytoma of small intestine--a case report]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1988; 10:395-6. [PMID: 3248506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Extramedullary plasmacytoma (EMP), being different from multiple myeloma, is very rare. One case of primary EMP of small intestine and review of literature are presented. The patient, 69-year-old male, was admitted because of left lower abdominal pain and anemia. A mass, table-tennis in size, was palpated. Intestinal obstruction was found by plain X-ray film. It was diagnosed as EMP of small intestine by pathology after exploratory celiotomy. Immunohistochemical stain showed that intracytoplasmic immunoglobulin was monoclonal IgG. Lambda. The blood Bence-Jones protein and bone marrow puncture were negative. The patient received chemotherapy after operation and was followed for two years giving satisfactory result. The pathogenesis, clinical feature, diagnostic criteria and treatment are discussed.
Collapse
|
2514
|
Zhao J, Yu Z, Pratt WP, Sato H, Schroeder PA, Bass J. Electronic transport properties of thin potassium wires below 1 K. II. Thermoelectric ratio G. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:8749-8753. [PMID: 9944239 DOI: 10.1103/physrevb.37.8749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
2515
|
Zhao J, Pratt WP, Sato H, Schroeder PA, Bass J. Electronic transport properties of thin potassium wires below 1 K. I. Derivative of electrical resistivity, d rho /dT. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:8738-8748. [PMID: 9944238 DOI: 10.1103/physrevb.37.8738] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
2516
|
Zhao J, Adams BL. Definition of an asymmetric domain for intercrystalline misorientation in cubic materials in the space of Euler angles. Acta Crystallogr A 1988. [DOI: 10.1107/s010876738701256x] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
2517
|
Zhang JZ, Zhao J, He QN. EEG findings during special psychical state (Qi Gong state) by means of compressed spectral array and topographic mapping. Comput Biol Med 1988; 18:455-63. [PMID: 3060312 DOI: 10.1016/0010-4825(88)90063-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Wallace first reported the changes in EEG during transcendental mediation [6]. Banquet [1] observed, on the basis of spectral analysis of the EEG, that the mediation state was a unique state of consciousness, and separate from wakefulness, drowsiness or sleep. The Qi Gong of China is not the same as either transcendental mediation or the Yoga Gong. The EEG during Qi Gong state is clearly different from those recorded during the resting state. The changes in the EEG during the Qi Gong have not been reported previously. The EEG alpha activity during the Qi Gong state occurs predominantly in the anterior regions. The peak frequency of EEG alpha rhythm is slower than the resting state. The change of EEG during Qi Gong between anterior and posterior half is negative correlation. These changes are statistically significant.
Collapse
|
2518
|
Sato H, Zhao J, Pratt WP, Onuki Y, Komatsubara T. Transport properties of the heavy-fermion compound CeCu6 down to 14 mK. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:8841-8844. [PMID: 9942724 DOI: 10.1103/physrevb.36.8841] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
2519
|
Zhao J, Leighton JK, Kemper B. Characterization of rabbit cytochrome P450IIC4 cDNA and induction by phenobarbital of related hepatic mRNA levels. Biochem Biophys Res Commun 1987; 146:224-31. [PMID: 3453118 DOI: 10.1016/0006-291x(87)90714-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We have cloned cDNA containing a partial sequence of a rabbit cytochrome P-450 (designated cytochrome P450IIC4) cDNA that is a member of the cytochrome P450IIC subfamily. The cDNA contains 770 bp of which the first 429 code for the C-terminal 143 amino acids of cytochrome P450IIC4. The protein coding region of the cDNA is 98% homologous with that of cytochrome P450IIC5 and the 3' untranslated region is about 90% homologous. In contrast to the constitutive isozyme, cytochrome P450IIC5, mRNA in the liver that hybridized to the 3' untranslated region of cytochrome P450IIC4 cDNA was increased about 8-fold 24 hours after a single injection of phenobarbital.
Collapse
|
2520
|
Wahl GM, Lewis KA, Ruiz JC, Rothenberg B, Zhao J, Evans GA. Cosmid vectors for rapid genomic walking, restriction mapping, and gene transfer. Proc Natl Acad Sci U S A 1987; 84:2160-4. [PMID: 3031668 PMCID: PMC304608 DOI: 10.1073/pnas.84.8.2160] [Citation(s) in RCA: 161] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We have designed cosmid vectors for rapid genomic "walking" and restriction mapping. These vectors contain the transcription promoters from either bacteriophage SP6, T7, or T3 flanking a unique BamHI cloning site. Mammalian expression modules encoding the dominant marker neomycin phosphotransferase or the amplifiable dihydrofolate reductase gene expressed from SV40 promoters were inserted for use in gene transfer studies. Restriction sites for the enzymes Not I and Sfi I, which cut mammalian DNA very infrequently, have been engineered near the transcriptional promoters to enable the excision of most inserts as single, full-length fragments. Genomic libraries representative of mouse, human, and hamster genomes were constructed by inserting 33- to 44-kilobase-pair (kbp) DNA fragments, generated by partial cleavage of genomic DNA with Mbo I or Sau3A, into the unique BamHI site. Digestion of recombinant cosmids with restriction enzymes that cleave frequently but do not disrupt the transcriptional promoters generates two small DNA templates for the synthesis of end-specific RNA probes to facilitate directional "walking." Cosmid restriction maps can be determined rapidly by one of several methods. The cosmids and methods we describe should have wide utility in determining the functional and structural organization of complex eukaryotic genomes and for physically linking distant genetic loci.
Collapse
|
2521
|
Zhao J. [Resin hemoperfusion in the treatment of severe hypnotic intoxication]. ZHONGHUA HU LI ZA ZHI = CHINESE JOURNAL OF NURSING 1986; 21:312-4. [PMID: 3641674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
2522
|
Bass J, Haerle ML, Pratt WP, Qian YJ, Schroeder PA, Yin S, Yu Z, Zhao J. Very-low-temperature resistivity anomaly in KRb, KNa, and LiMg alloys. PHYSICAL REVIEW LETTERS 1986; 56:957-960. [PMID: 10033330 DOI: 10.1103/physrevlett.56.957] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
2523
|
Li HJ, Liu DX, Li L, Liu ZG, Lo SL, Zhao J, Han XP, Yu WZ. A note about the incidence and origin of Hb D-Punjab in Xinjiang, People's Republic of China. Hemoglobin 1986; 10:667-71. [PMID: 3557998 DOI: 10.3109/03630268609036571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
2524
|
Zhao J. [Cisplatin or combined cisplatin and 60Co radiation in the treatment of advanced lung cancer--report of 145 cases]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1985; 7:283-5. [PMID: 4085320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The result of 145 patients with advanced primary lung cancer treated by cisplatin alone or combined cisplatin and 60Co radiation from June 1981 to August 1983 is reported. 75 of these cases were clinical stage III and 70 stage IV. 57 (39%) were proved by pathology and 64 (44%) by cytology, totalling 121 (83%) as non-small cell lung cancers. The other 24 (17%) were diagnosed by clinical means. All the patients were divided into two groups. Group I, 26 cases were treated by cisplatin alone. In this group, no complete response was found, the partial response rate was 31% and 1-year survival rate was 40%. Group II, 119 patients were treated by the combination of cisplatin and 60Co radiation. Complete response rate was 16%, partial 59%, 1 and 2-year survival rates were 52% and 33%, respectively. The results show that the combination of cisplatin and 60Co therapy is more effective for the advanced lung cancers.
Collapse
|
2525
|
|
2526
|
Ma S, Zhao J. [Effects of epidural anesthesia in patients with different pulmonary reserves]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1984; 6:194-7. [PMID: 6241047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
2527
|
Zhao J, Zhang CY, Xu DM, Wang ZY. Preventive effects of pollen typhae and Radix Salviae Miltiorrhizae in atherogenesis. Inhibition on proliferation of aortic smooth muscle cells in culture. J TRADIT CHIN MED 1983; 3:177-83. [PMID: 6556401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
2528
|
Zhao J. [Effect of epidural anesthesia on respiratory function in gyneco-obstetric patients (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1981; 3:195-7. [PMID: 6459182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|