1626
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Li P, Medon PP, Skingle DC, Lanser JA, Symons RH. Enzyme-linked synthetic oligonucleotide probes: non-radioactive detection of enterotoxigenic Escherichia coli in faecal specimens. Nucleic Acids Res 1987; 15:5275-87. [PMID: 3299267 PMCID: PMC305961 DOI: 10.1093/nar/15.13.5275] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Synthetic oligonucleotides, complementary to unique sequences in the heat stable enterotoxin gene of Escherichia coli specific for humans, were prepared with a 30-atom spacer arm and a 3' terminal sulfhydryl group which was coupled to bromoacetyl-derivatized alkaline phosphatase. The resulting direct enzyme-linked oligonucleotide probes, containing one enzyme molecule per oligonucleotide, successfully diagnosed enterotoxigenic Escherichia coli in clinical specimens by using a modified colony hybridization method and a colorimetric assay. The procedure is rapid, simple and reliable with a sensitivity equivalent to that using 5'-terminally labelled [32p]-oligonucleotide probes. The results indicate that the enzyme-labelled oligonucleotide probes should be applicable to the routine diagnosis of enterotoxigenic Escherichia coli and possess the potential for the detection of other microbial pathogens.
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1627
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Ohnishi A, Li P, Branch RA, Holycross B, Jackson EK. Caffeine enhances the slow-pressor response to angiotensin II in rats. Evidence for a caffeine-angiotensin II interaction with the sympathetic nervous system. J Clin Invest 1987; 80:13-6. [PMID: 3110209 PMCID: PMC442195 DOI: 10.1172/jci113038] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The purpose of this study was to determine if caffeine augments the slow-pressor response to chronic low-dose infusions of angiotensin II (AII) or the rapid-pressor response to acute infusions of AII. AII was infused (125 ng/min i.p.) for 12 d via mini-osmotic pumps in four groups of rats: group I, intact rats not treated with caffeine (n = 9); group II, intact rats treated with caffeine (0.1% in drinking water, n = 9); group III, rats previously sympathectomized with 6-hydroxydopamine, but not treated with caffeine (n = 10); and group IV, rats previously sympathectomized with 6-hydroxydopamine and treated with caffeine (n = 10). Chronic low-dose AII infusions slowly elevated systolic blood pressure in all groups. Caffeine greatly augmented this slow-pressor response to AII in intact animals; however, caffeine failed to enhance AII-induced hypertension in sympathectomized rats. Caffeine pretreatment did not enhance the rapid-pressor response to acute intravenous infusions of AII. We conclude that caffeine augmented the slow-pressor effect of chronic low-dose infusions of AII via a mechanism that involved the sympathetic nervous system.
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1628
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Cantrell JH, Yost WT, Li P. Acoustic radiation-induced static strains in solids. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 35:9780-9782. [PMID: 9941405 DOI: 10.1103/physrevb.35.9780] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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1629
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Long YL, Luo HC, Wei FR, Li J, Li P. [An investigation of psoriasis in Chengdu and Deyang]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1987; 18:175-8. [PMID: 3623546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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1630
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Fan YS, Li P. Cytogenetic studies of four human lung adenocarcinoma cell lines. CANCER GENETICS AND CYTOGENETICS 1987; 26:317-25. [PMID: 3471311 DOI: 10.1016/0165-4608(87)90066-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
G-banded karyotypes were analyzed on four human lung adenocarcinoma cell lines, AGZY83-a, LTEP-a1, LTEP-a2, and GLC-82. More than 50 cells were counted and 20-40 cells were karyotyped for each cell line at different passages. The chromosome numbers of cell line AGZY83-a, LTEP-a1, LTEP-a2, and GLC-82 were 53-69, 100-110, 51-56, and 61-63, respectively. Each cell line had a number of markers involving complex chromosome rearrangements. Chromosomal analysis at different passages showed the stability of these cell lines in vitro. It was revealed that the marker chromosomes involving deletions or rearrangements of the short arm of chromosome #1 were present in all the four cell lines with breakpoints at 1p12-1p22.
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1631
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Ambrus CM, Anthone S, Horvath C, Kalghatgi K, Lele AS, Eapen G, Ambrus JL, Ryan AJ, Li P. Extracorporeal enzyme reactors for depletion of phenylalanine in phenylketonuria. Ann Intern Med 1987; 106:531-7. [PMID: 3826953 DOI: 10.7326/0003-4819-106-4-531] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Multitubular enzyme reactors with immobilized enzymes were developed to achieve depletion of circulating substrate by extracorporeal means. To act as prototypes, reactors were prepared with immobilized L-phenylalanine ammonia-lyase, an enzyme that metabolizes phenylalanine to trans-cinnamic acid and ammonia without the need for a coenzyme. We report the first application of phenylalanine ammonia-lyase reactors in an extracorporeal circulation system in a patient with phenylketonuria. A phenylalanine level of 1.82 mmol/L (for the last 6 years) decreased to 1.24 mmol/L after 5.5. hours of treatment, without the enzyme entering the circulation. Total phenylalanine depletion from blood and tissue stores was estimated at 1800 mg. The hemodialysis-like procedure proved to be without side effects, specific for phenylalanine, and suitable in the management of pregnant women with phenylketonuria and late-onset hyperphenylalaninemia. The extracorporeal use of enzyme reactors for temporary enzyme replacement represents a new, safe, and effective therapeutic modality.
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1632
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Li P. [Be on the alert against the incompatibility of Chinese traditional drugs with Occidental medicines]. ZHONG YAO TONG BAO (BEIJING, CHINA : 1981) 1987; 12:55-6, 62. [PMID: 2964294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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1633
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Guo XQ, Liu NA, Li P. [Inhibitory effect of a microinjection of morphine into the ventral medulla on ventricular extrasystoles induced by hypothalamic stimulation in the rabbit]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1987; 39:132-8. [PMID: 2443982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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1634
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Fan YS, Li P, Wang XY, Xing CH, Wang YL. Chromosomal analysis of a human lung adenocarcinoma cell line, AGZY83-A. Chin Med J (Engl) 1987; 100:198-203. [PMID: 3113841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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1635
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Huangfu DH, Li P. [Defence-reaction-related neurons in the ventral medulla of rabbits]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1986; 38:383-9. [PMID: 3798132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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1636
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Todd JA, Li P. Microstructure-mechanical property relationships in isothermally transformed vanadium steels. ACTA ACUST UNITED AC 1986. [DOI: 10.1007/bf02665318] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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1637
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Guo XQ, Li P. [Inhibitory effect of deep peroneal nerve input on the ventricular extrasystoles induced by stimulation of the defence area in the rabbit]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1986; 38:266-75. [PMID: 2430337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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1638
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Li P, Liu HJ, Zhu WN. [A preliminary report on plasma fibronectin determination in 80 cases of liver diseases]. ZHONGHUA NEI KE ZA ZHI 1986; 25:82-4, 126. [PMID: 3792128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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1639
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Li P. [Mechanism and significance of cardiovascular changes during the defense-alerting response]. SHENG LI KE XUE JIN ZHAN [PROGRESS IN PHYSIOLOGY] 1986; 17:25-8. [PMID: 3526538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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1640
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Huangfu DH, Li P. [Advances in studying the cardiovascular neurons of the brain stem]. SHENG LI KE XUE JIN ZHAN [PROGRESS IN PHYSIOLOGY] 1986; 17:29-32. [PMID: 3526539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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1641
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Li JY, Li GY, Zheng SF, Liu YY, Li P, Yang CS, Blot WJ, Ershow AG, Li FP, Greenwald P. A pilot vitamin intervention trial in Linxian, People's Republic of China. NATIONAL CANCER INSTITUTE MONOGRAPH 1985; 69:19-22. [PMID: 3914620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A 24-week pilot study of daily or weekly multiple vitamin supplementation among 852 adults in Linxian, where the rate of esophageal cancer is exceptionally high, demonstrated the feasibility of an intervention trial in this population. Compliance, when judged by pill count, was high for both frequencies of pill use. Only 2% of the subjects refused to take any pills, and, among pill takers, over 95% were reported to be taking most of their pills at the end of the study. Biochemical confirmation of high compliance was demonstrated in urine and blood tests, which showed markedly improved vitamin levels after supplementation. Results of the pilot study indicated that a system in which barefoot doctors were used in pill distribution was effective and that established field operating procedures for a full-scale intervention trial in this area were acceptable.
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1642
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Bernstein JM, Lee J, Conboy K, Ellis E, Li P. Further observations on the role of IgE-mediated hypersensitivity in recurrent otitis media with effusion. Otolaryngol Head Neck Surg 1985; 93:611-5. [PMID: 3932928 DOI: 10.1177/019459988509300508] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
One hundred young patients with recurrent otitis media with effusion (OME) were evaluated for IgE-mediated hypersensitivity by critical analysis of history, physical findings, skin testing for selected antigen, laboratory determination of total IgE, and radioallergosorbent testing (RAST) for six inhalant and two food allergens. The patients could be divided into allergic rhinitis and nonallergic groups. Allergic rhinitis patients had higher total IgE in their serum, and middle ear effusion (MEE). IgE was elevated in 16 of 35 allergic patients. In 8 of these 16 (23% of the allergic group), the IgE/mg protein was higher in the MEE than in the corresponding serum, suggesting local production of IgE. Nasal IgE was substantially increased in the allergic patients; however, in many patients there was no correlation between the corresponding MEE IgE and elevated nasal IgE, suggesting that local production of nasal and middle ear IgE is independent. We conclude that IgE-mediated allergic reactions may play a role in the pathogenesis of OME in about 23% of young allergic patients.
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1643
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Li P, Li DH, Bai H. [Intra-operative cholangiography]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1985; 23:532-3, 572. [PMID: 4092561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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1644
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Li P. Modulatory effect of electroacupuncture on cardiovascular functions. J TRADIT CHIN MED 1985; 5:211-4. [PMID: 2418316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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1645
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Bellett AJ, Li P, David ET, Mackey EJ, Braithwaite AW, Cutt JR. Control functions of adenovirus transformation region E1A gene products in rat and human cells. Mol Cell Biol 1985; 5:1933-9. [PMID: 3837852 PMCID: PMC366910 DOI: 10.1128/mcb.5.8.1933-1939.1985] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Altered control of the rat cell cycle induced by adenovirus requires expression of transformation region E1A, but not of E1B, E2A, E2B, or late genes. We show here that neither E3 nor E4 is required, so the effect results directly from an E1A product. Mutants with defects in the 289-amino-acid (aa) E1A product had little or no effect on the rat cell cycle even at 1,000 IU per cell. A mutant (pm975) lacking the 243-aa E1A product altered cell cycle progression, but less efficiently than did wild-type virus. The 289-aa E1A protein is therefore essential for cell cycle effects; the 243-aa protein is also necessary for the full effect but cannot act alone. Mutants with altered 289-aa E1A proteins showed different extents of leak expression of viral early region E2A as the multiplicity was increased; each leaked more in human than in rat cells. dl312, with no E1A products, failed to produce E2A mRNA or protein at 1,000 IU per cell in rat cells but did so in some experiments in human cells. There appears to be a very strict dependence of viral early gene expression on E1A in rat cells, whereas dependence on E1A is more relaxed in HeLa cells, perhaps due to a cellular E1A-like function. Altered cell cycle control is more dependent on E1A function than is early viral gene expression.
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1646
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Fan DJ, Li P, Guo JQ. [Merthiolate-preserved homografts for arterial transplantation: surgery and long-term results]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1985; 23:261-4, 317. [PMID: 4017781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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1647
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Xia Y, Guo XQ, Li P. [Role of the medial medulla in the inhibitory effect of somatic afferent nerve stimulation on ventricular extrasystoles induced by hypothalamic stimulation in the rabbit]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1985; 37:37-43. [PMID: 2420013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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1648
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Wang SP, Li P, Qiu HX. [Disorder of magnesium metabolism in hyper- and hypothyroid patients]. ZHONGHUA NEI KE ZA ZHI 1985; 24:98-101, 126. [PMID: 3987451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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1649
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Xiao YF, Li P. [Influence of microinjection of scopolamine into various brain areas on pressor effect of electroacupuncture in nitroprusside-induced hypotensive dogs]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1985; 37:31-6. [PMID: 4095547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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1650
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Xia Y, Guo XQ, Zhang AZ, Cao XD, Li P. Inhibitory effect of analogous electro-acupuncture on experimental arrhythmia. ACUPUNCTURE ELECTRO 1985; 10:13-34. [PMID: 2409754 DOI: 10.3727/036012985816714595] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rabbits were used to study the inhibitory effect of analogous electro-acupuncture on the experimental arrhythmias, i.e. hypothalamic stimulation-induced ventricular extrasystole (HVE). The result revealed that HVE, which was due to an increased cardiac sympathetic activity, could be inhibited by deep peroneal nerve stimulation with an electrical current of low frequency and low intensity. Such effect is related to endogenous opioid peptides and serotonin in the arcuatus area, the periaqueductal gray and and the medial medulla. The acupuncture correction of arrhythmias may have the same mechanism.
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