651
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Melnick JL, Hu C, Burek J, Adam E, DeBakey ME. Cytomegalovirus DNA in arterial walls of patients with atherosclerosis. J Med Virol 1994; 42:170-4. [PMID: 8158112 DOI: 10.1002/jmv.1890420213] [Citation(s) in RCA: 139] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The biological properties of cytomegalovirus (CMV) are consistent with a potential role in the pathogenesis of atherosclerosis. The evidence of such a role has so far been circumstantial, but CMV nucleic acid is beginning to be reported with increasing frequency in the arterial wall. Arterial specimens from 135 patients who underwent vascular surgery for symptomatic atherosclerotic vessel disease were analyzed by PCR for the presence of CMV nucleic acid. Samples were studied from the atheromatous plaque area and from uninvolved aortic tissues of patients undergoing surgery for vascular disease. One primer pair (LA) was used for detection of a late gene, and two other primer pairs (E1 and E2) were used for the immediate early gene region. Serum antibody to CMV was measured by radioimmunoassay. With the late gene primer, CMV nucleic acid was found in 76% of the tissue specimens tested, whereas the E2 gene primer complementary to the transforming mtr2 region was reactive in 90% of the arterial samples. There was no significant difference in the prevalence of CMV DNA in atherosclerotic plaque tissue and in uninvolved aortic tissue from the patients. A second early gene primer was not reactive with the tissue specimens, although it gave positive results with the positive control of infectious virus. Serum antibody to CMV was detected in 86% of the patients in whose tissue CMV DNA was demonstrated. CMV DNA was detected in a high proportion of atherosclerotic plaque tissues as well as in uninvolved aortic tissue of surgical patients, suggesting that latent CMV infection of the arterial wall may be a common occurrence in patients with atherosclerosis.
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652
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Jin QY, Xu YB, Zhai HR, Hu C, Lu M, Bie QS, Zhai Y, Dunifer GL, Naik R, Ahmad M. Direct evidence of spin polarization oscillations in the Cu layers of Fe/Cu multilayers observed by NMR. PHYSICAL REVIEW LETTERS 1994; 72:768-771. [PMID: 10056518 DOI: 10.1103/physrevlett.72.768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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653
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Lowry RW, Adam E, Hu C, Kleiman NS, Cocanougher B, Windsor N, Bitar JN, Melnick JL, Young JB. What are the implications of cardiac infection with cytomegalovirus before heart transplantation? J Heart Lung Transplant 1994; 13:122-8. [PMID: 8167117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
To elucidate prognostic implications of recipient cytomegalovirus infection before heart transplantation, we prospectively followed the clinical outcome of 21 transplant recipients whose explanted hearts (myocardium and coronary arteries) were first examined for the presence of cytomegalovirus DNA with polymerase chain reaction. Subsequently, serial endomyocardial biopsy tissue samples obtained from the allograft during routine evaluation for rejection were analyzed by polymerase chain reaction for both an immediate early and late cytomegalovirus gene region of cytomegalovirus DNA. Humoral cytomegalovirus immunoglobulin G antibodies were also measured by radioimmunoassay. Both early and late antigens were present in 14 of 21 (67%) explants from patients with (12 of 15 explants) and without (2 of 6 explants) pretransplant cytomegalovirus antibodies. Although the presence of both early and late antigens was uncommon in allografts the first week after transplantation (5 of 20 allografts, 25%), their presence significantly increased at 1 month (14 of 21 allografts, 67%) and 2 to 3 months (13 of 17 allografts, 77%) regardless of pretransplantation cytomegalovirus antibody status. The presence of both early and late antigens in explant tissue strongly predicted allograft virus status during the follow-up periods. Of five patients in whom clinical cytomegalovirus disease subsequently developed, all had explants positive for both early and late antigens, and all allografts were positive for early and late antigens within 1 month after transplantation. These are the first prospective data to correlate pretransplantation serum antibodies and explant polymerase chain reaction status with the development of future allograft infections and overall clinical outcome.
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654
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Hu C, Baker T. The liquid volume control in the ISM process applied to the AlFe system. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0956-7151(94)90047-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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655
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Zeng S, Hu C, Wei H, Lu Y, Zhang Y, Yang J, Yun G, Zou W, Song B. Intravitreal pharmacokinetics of liposome-encapsulated amikacin in a rabbit model. Ophthalmology 1993; 100:1640-4. [PMID: 8233389 DOI: 10.1016/s0161-6420(93)31423-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Intravitreal injection of antibiotics has become a standard therapy for bacterial endophthalmitis. The duration of effective antimicrobial levels in the vitreous after single injection, however, may not be long enough to get optimal response. The authors prepared liposome-encapsulated amikacin for prolonging the duration of intravitreal therapeutic concentrations and investigated the intravitreal pharmacokinetics of the liposomes and amikacin in phosphate buffer solution (PBS) as control. METHODS The liposome-encapsulated amikacin was prepared by reverse-phase evaporation method. The intravitreal pharmacokinetics of the liposomes was compared with amikacin in PBS by fluorescence polarization immunoassay. Albino rabbits were randomly distributed into 12 groups. Rabbits in groups 1 to 6 and in groups I to VI (control groups) received an intravitreal injection of the liposome-encapsulated amikacin and amikacin in PBS, respectively. RESULTS The encapsulation rate of amikacin was 91%. The time of 50% spontaneous degradation (half-life) of the liposomes in PBS (38 degrees C, pH 7.4) was 47.6 days, and the time of 50% release (half-life) of the drug from the liposomes in PBS was 84.8 hours. The vitreous amikacin concentrations in groups 1 to 6 were significantly greater (P < 0.05) than those in control groups I to VI in every time interval, except in groups 1 to 3 at 1 hour after injection. The difference was particularly obvious in the endophthalmitis groups. The clearance of encapsulated amikacin in vitreous appeared to be related to the state of blood-ocular barrier and to the structural integrity of vitreous. The distribution, the absorption, and the elimination of encapsulated amikacin in vitreous showed the first-order kinetics. CONCLUSION The liposome-encapsulated amikacin prolonged half-life of the drug in vitreous. The results of the pharmacokinetic analysis suggested that in endophthalmitis, especially in severe cases, the liposomes may be preferable to conventional preparation.
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656
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Abstract
A simple technique for blood collection in pigs of body weight 15-40 kg is described. The subcutaneous abdominal vein was used for rapid collection of 5-20 ml of blood samples. The animals were premedicated with 10 mg/kg of ketamine and 600 micrograms of atropine given intramuscularly prior to blood collection.
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657
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Yang W, Wang R, Ding D, Hu C. Linear elasticity theory of cubic quasicrystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:6999-7002. [PMID: 10006867 DOI: 10.1103/physrevb.48.6999] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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658
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Ding D, Yang W, Hu C, Wang R. Generalized elasticity theory of quasicrystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:7003-7010. [PMID: 10006868 DOI: 10.1103/physrevb.48.7003] [Citation(s) in RCA: 187] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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659
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Ideguchi T, Hu C, Kim BH, Nishise H, Yamashita J, Kakuno T. An open reading frame in the Rhodospirillum rubrum plasmid, pKY1, similar to algA, encoding the bifunctional enzyme phosphomannose isomerase-guanosine diphospho-D-mannose pyrophosphorylase (PMI-GMP). BIOCHIMICA ET BIOPHYSICA ACTA 1993; 1172:329-31. [PMID: 8383539 DOI: 10.1016/0167-4781(93)90224-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The nucleotide sequence of a BglII fragment (3188 bp) from the plasmid pKY1 of Rhodospirillum rubrum was determined. A significant similarity was found between the amino acid sequences deduced from the nucleotide sequence of BglII fragment with that of algA, encoding the bifunctional enzyme with both the activities of phosphomannose isomerase and guanosine diphospho-D-mannose pyrophosphorylase of Pseudomonas aeruginosa.
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660
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Abstract
Von Recklinghausen's neurofibromatosis (VRN) is a familial disorder characterised by a generalized neuroectodermal dysplasia--symptomatic involvement of the gastrointestinal tract is rare. We report on our experience with two children who had proven gastrointestinal neurofibromas and highlight the need for careful assessment in children with VRN who develop abdominal pain.
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661
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662
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Zhou L, Hu C, Yuan G, Xu W, Chen J, Lai L. [Radioimmunoassay of serum and CSF myelin basic protein and its application to patients with acute cerebrovascular accident]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1992; 23:362-6. [PMID: 1284792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Myelin basic protein (MBP) was measured in the serum and CSF of patients with acute cerebrovascular disease (CVD, 34 cases), demyelinating disorders (DMD, 30 cases) and other neurological diseases (OND, 26 cases) by using a double antibody radioimmunoassay (RIA). Patients with acute CVD had a mean serum MBP concentration and positivity rate much higher than those with DMD and OND. The differences were significant (P < 0.05). In CSF, MBP levels in patients with acute CVD and patients with DMD were significantly greater than those in OND patients (P < 0.05). The results also show that there was a linear relationship between the CSF MBP levels and the serum MBP levels in patients with acute CVD (r = 0.72, P < 0.01), but no such relationship in patients with DMD and OND. The amount of serum MBP was also significantly correlated to the severity of acute CVD, to the level of consciousness disorder and limb paralysis, and to the extent and site of the cerebral lesion at CT-scan (P < 0.05). This study shows that the measurement of brain specific MBP in serum as a marker of cerebral damage may have clinical value in the diagnosis and prognosis of patients with CVD.
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663
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Hu C. Prevention of blindness in China. Chin Med J (Engl) 1992; 105:695-8. [PMID: 1458974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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664
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Shulman S, Hu C. A study of the detection of sperm antibody in cervical mucus with a modified immunobead method. Fertil Steril 1992; 58:387-91. [PMID: 1633907 DOI: 10.1016/s0015-0282(16)55214-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To develop a new immunobead binding test (IBT) procedure that will detect sperm antibody in cervical mucus (CM), especially in very small samples of mucus. DESIGN After the interaction of donor sperm with bromelin-dissolved CM, the motile sperm cells were separated from other cells and debris and then tested with a standard immunobead method. SETTING The CM and serum samples were obtained from a sequence of referred patients who were sent to this testing laboratory. PATIENTS There were 60 women who provided 64 samples of CM and 41 samples of blood serum. They were partners in infertile couples. INTERVENTIONS None. MAIN OUTCOME MEASURE A useful distinction was made between positive and negative results for the mucus samples by this CM-IBT procedure. The usable samples of mucus could be as little as 0.05 g (wet weight). RESULTS From the 60 women, seven mucus samples were positive; in the repeated testing, the same results were obtained with five of the six positive samples and seven of seven negative samples. CONCLUSION This method (CM-IBT) can be clinically useful for detecting sperm antibody in CM, especially because it is effective for tiny samples. In this method, the motile sperm cells are better separated from the debris after the incubation step. When the IBT was applied to the serum samples from the same women, there was no correlation between serum-IBT and CM-IBT, showing that both materials must be tested.
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665
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Chin SA, Hu C. Analytic wave functions for understanding the spectrum of the three-anyon problem. PHYSICAL REVIEW LETTERS 1992; 69:229-232. [PMID: 10046620 DOI: 10.1103/physrevlett.69.229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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666
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Meroni PL, Capsoni F, Borghi MO, Barcellini W, Minonzio F, Ongari AM, Fain C, Hu C, Brambilla G, Pettenati C. Immunopharmacological activity of cefodizime in young and elderly subjects: in vitro and ex vivo studies. Infection 1992; 20 Suppl 1:S61-3. [PMID: 1526681 DOI: 10.1007/bf01709956] [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: 12/27/2022]
Abstract
The biological response modifying activities of cefodizime (CDZ), a new third-generation cephalosporin, were investigated in vitro and ex vivo. In vitro investigations using cells isolated from the blood of young healthy donors showed no stimulating activity of CDZ on peripheral blood lymphocytes, natural killer cell activity, IL-1 production by adherent mononuclear cells, PMN chemiluminescence or PMN chemotaxis. A slight but statistically insignificant increase in PMN phagocytosis and phagocytic index was observed in the same population. IL-1 production was increased in three subjects with low resting state values. In a controlled ex vivo study, 20 healthy elderly subjects selected on the basis of depressed phagocytic function were treated with CDZ 1 g i.m. b.i.d. or placebo for eight days. PMN function was determined at baseline and on the day after the last dose. In the CDZ group a significant increase in both phagocytosis and phagocytic index was found, while there were no changes in the placebo group. In conclusion, CDZ restored depressed PMN phagocytic function in a population of elderly subjects. Patients with impaired PMN function who require antibiotic treatment may benefit from this activity of CDZ.
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667
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Wang JJ, Hu C, Lee F, Shaio MF, Chen LK. Internalization of CD4 molecules in human T-cells demonstrated by immuno-electron microscopy. HISTOCHEMISTRY 1992; 97:51-9. [PMID: 1377661 DOI: 10.1007/bf00271281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Internalization of CD4 molecules on human CD4-enriched T-cells was demonstrated by immunocytochemical electron microscopy. CD4+ T-cell subclones were obtained from normal human peripheral blood, followed by one-way MLC screening and co-culturing with IL-2. Fixed and non-fixed T-cell samples were indirectly immunolabeled with mouse anti-human CD4 monoclonal antibody and goat anti-mouse IgG conjugated with peroxidase. Unfixed T-cells were immunolabeled at 4 degrees C and then re-incubated for 5-45 min at 37 degrees C. The selected CD4+ T-cell subclones showed strong CD4 binding on the cell surface after IL-2 incubation. However, fresh T-cells, monocytes, bone marrow cells and CD8+ T-cells all stained negative for CD4. The distribution of CD4 molecules on the fixed cell surface showed a homogeneous pattern. Capping and internalization of CD4-antibody-peroxidase complexes from the cell surfaces were observed follow a pathway of receptor-mediated endocytosis in unfixed T cells. Endocytotic vesicles, vacuoles of diverse sizes and shapes near the cell membrane or deep in the cell center were found to contain CD4 molecules. Negatively stained Golgi saccules were observed up to 45 min after re-incubation. These results suggest that increased CD4 molecules can be induced on the surface of normal human T-cells in vitro. Internalization and accumulation of CD4 molecules occurred in CD4-enriched T-cells with IL-2 pretreatment.
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668
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Hu C, Flecknell PA, Liles JH. Fentanyl and medetomidine anaesthesia in the rat and its reversal using atipamazole and either nalbuphine or butorphanol. Lab Anim 1992; 26:15-22. [PMID: 1548841 DOI: 10.1258/002367792780809075] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The intraperitoneal injection of anaesthetic agents is a simple and convenient method of anaesthetizing rats. However, all of the anaesthetic combinations in current use which are administered by intraperitoneal injection produce prolonged sedation, and full recovery of consciousness may take several hours. Fentanyl, a mu agonist opioid, and medetomidine, an alpha 2-adrenoceptor agonist were mixed and administered as a single intraperitoneal injection. Combinations of 300 micrograms/300 micrograms/kg and 300 micrograms/200 micrograms/kg of fentanyl/medetomidine were shown to produce surgical anaesthesia in the rat. This anaesthetic regimen produced significant respiratory depression (P less than 0.01) and animals did not regain their righting reflex until 193 +/- 21 min (mean +/- 1 SD) after injection. Administration by intraperitoneal injection of atipamezole, a specific alpha 2-adrenoceptor antagonist (1 mg/kg) mixed with a mu antagonist/k agonist opioid (nalbuphine, 2 mg/kg or butorphanol 0.4 mg/kg), resulted in a rapid (less than 8 min) reversal of anaesthesia and the associated respiratory depression, and apparent full recovery of consciousness.
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669
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Wang ZD, Hu C. Numerical relaxation approach for solving the general Ginzburg-Landau equations for type-II superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:11918-11923. [PMID: 9999328 DOI: 10.1103/physrevb.44.11918] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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670
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Hu C. [Photochemically induced focal cerebral infarction in rat and its pathological observation]. ZHONGHUA YI XUE ZA ZHI 1991; 71:627-9, 44. [PMID: 1666976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cerebral infarction in Wistar rats was induced by photochemical method. A photochemical reaction was produced by the photosensitive agent rose bengal under the effects of green light (560 +/- 60 nm). This reaction released free radicals which may damage the endothelium of cerebral vessels and induce platelet aggregation, and then may cause thrombosis in cerebral parenchymal vessels. There were typical changes of thrombosis and ischemic necrosis in the irradiated region of the cerebrum under light and electron microscopy. Serial pathologic findings suggested that the critical phase of progressive necrosis lies at the time of 1-6 hours after cerebral ischemia induced photochemically. Therefore, effective protection of the brain is important in the early stage of cerebral ischemia.
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671
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Gordon MM, Hu C, Chokshi H, Hewitt JE, Alpers DH. Glycosylation is not required for ligand or receptor binding by expressed rat intrinsic factor. THE AMERICAN JOURNAL OF PHYSIOLOGY 1991; 260:G736-42. [PMID: 1852116 DOI: 10.1152/ajpgi.1991.260.5.g736] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A cDNA clone encoding rat intrinsic factor (IF), pIFQ, has been inserted into the eukaryotic expression vector pSVL and used to transfect COS-1 cells. The IF produced by the transfected cells was secreted nearly exclusively into the medium at concentrations of 0.1-0.2 micrograms/ml. Tunicamycin treatment (1-10 micrograms/ml) completely blocked N-linked glycosylation but had no effect on IF secretion. The secreted glycosylated IF retained all the properties of native IF, i.e., high affinity for cobalamin (Cbl) and for the IF-Cbl receptor and relative resistance to low pH and to proteolysis. The nonglycosylated IF also retained these properties except that it was more protease sensitive. The protease degradation was prevented by the presence of the ligand Cbl. The presence of carbohydrate may play a role in protecting IF from digestion by pancreatic proteases in the intestinal lumen.
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672
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Lian DX, Yang L, Yun WX, Hua S, Hu C. Gas chromatographic determination of aldicarb and its metabolites in urine. J Chromatogr A 1991; 542:526-30. [PMID: 1880190 DOI: 10.1016/s0021-9673(01)88788-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A method is described for the determination of aldicarb and its metabolites (the sulphoxide and sulphone) in urine by gas chromatography with flame photometric detection (GC-FPD). The sample was concentrated with a column containing activated charcoal and Florisil, and then eluted with dichloromethane-acetone (1:1, v/v). The aldicarb and aldicarb sulphoxide in the eluate solution were oxidized to aldicarb sulphone and the total sulphone concentration was determined by GC-FPD after extraction with dichloromethane and clean-up with an activated charcoal column. The detection limit was 0.0024 mg/l. The mean recoveries from spiked urine in the range 0.04-0.12 mg/l were 90.9%, 86.6%, 92.6% for aldicarb, aldicarb sulphoxide and aldicarb sulphone, respectively.
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673
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Lim SM, Li SQ, Wee A, Chong SM, Hu C, Rauff A, White DJ. Both concordant and discordant heart xenografts are rejected by athymic (nude) rats with the same tempo as in T cell competent animals. Transplant Proc 1991; 23:581-2. [PMID: 1990616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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674
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Yang Z, Hu C, Chen J, Chen G, Liu Z. [A new serotype of Shigella boydii]. WEI SHENG WU XUE BAO = ACTA MICROBIOLOGICA SINICA 1990; 30:284-95. [PMID: 2251827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Two strains which belong to the same serotype of Shigella were isolated from the bloody-pus stool of two patients (in 1986) and is reported in this paper. The results were identical both showing agglutination in low titer with serotype 8 of S. dysenteriae and serotype 4 of S. boydii when the two strains were checked well with all kinds of diagnostic antisera and vice versa, ie the antisera produced by the two strains were also checked well with sera prepared with the representative strains of all Shigella spp. No cross agglutination with O6, O7, and O150 of E. coli were found. Consequently, It appears to be a new serotype of Shigella. These two strains possess the ability of causing keratitis in guinea-pigs as well as invading epithelial cells, the DNA of both strains in agarose-electrophoresis showed a large plasmid, indicating that they are virulent strains possessing invasive ability. It was concluded that these two strains belonged to Shigella boydii as they fermented mannitol and non-related antigenically with Shigella flexneri. Since serotype 1-18 of S. boydii have been reported recently, we propose that this new serotype should be serotype 19 of Shigella boydii.
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675
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Hu C, Hu Y. [Nursing care after thymus transplantation in patients with advanced liver cancer]. ZHONGHUA HU LI ZA ZHI = CHINESE JOURNAL OF NURSING 1990; 25:319-20. [PMID: 2208403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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676
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De Bernardi B, Scorza R, Hu C, Travaglini P, Della Casa Alberighi O, Togni ME, Honorati C, Cigognini A. Lymphocyte abnormalities in patients with macro- and micro-prolactinoma: different effects of bromocriptine treatment in the two groups. Int J Neurosci 1990; 51:261-3. [PMID: 2279881 DOI: 10.3109/00207459008999715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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677
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Honorati MC, Travaglini P, De Bernardi B, Scorza R, Hu C, Togni ME, Radelli L, Vanoli M, Zanussi C. NK activity in patients with pathological hyperprolactinemia: effect of bromocriptine. Int J Neurosci 1990; 51:303-5. [PMID: 2279890 DOI: 10.3109/00207459008999727] [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: 12/31/2022]
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678
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Hu C, Radelli L, Scorza R, Bonara P, Perego R, Fantuzzi G. In vivo enhancement of NK-cell activity by thymopentin. INTERNATIONAL JOURNAL OF IMMUNOPHARMACOLOGY 1990; 12:193-7. [PMID: 2184134 DOI: 10.1016/0192-0561(90)90053-p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Natural killer (NK) activities of fresh and IL-2-precultured peripheral blood mononuclear cells (PBMC) were investigated in 13 elderly subjects before and after thymopentin (TP-5) treatment and in 12 age-matched controls. The NK activity of fresh PBMC was found to be significantly higher in subjects given TP-5 at 50 mg s.c. three times per week for one month. Conversely, this type of treatment with TP-5 did not significantly modify the cytotoxic capacity of IL-2-precultured PBMC.
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679
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Hu C. [An epidemiologic survey of cataract in Shunyi County, Beijing]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 1989; 25:360-4. [PMID: 2627862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The report presents the findings of an epidemiologic study of cataract in Shunyi County, Beijing, conducted in 1985, revealing that the general prevalence of senile cataract was 5.99%, and in people over 40 years of age, 18.58%; the rate obviously increased with age. Cataract accounted for 14.54% of the blind and 20.51% of the low-vision. The diagnostic criteria for senile cataract in surveys and the strategy for the prevention and treatment of senile cataract are recommended.
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680
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Hu C. [An epidemiologic survey of trachoma in Shunyi County, Beijing]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 1989; 25:175-8. [PMID: 2582956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The report presents the results of an epidemiologic survey of trachoma in Shunyi County, Beijing, conducted in 1985, revealing that trachoma was the major eye disease in Shunyi County with a prevalence of 38.68%, which obviously related with age. Most of the trachoma patients were mild cases; only 2.88% were of the severe type, while trachomatous complications occurred in 10.50% of the patients. The morbid characteristics of trachoma in rural areas and measures of treatment and prevention are discussed.
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681
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Hu C. [An epidemiologic study of blindness and low vision in Shunyi county, Beijing]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 1988; 24:322-6. [PMID: 3148429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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682
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Della Casa Alberighi O, Nobile Orazio E, Bonara P, Hu C, Spagnol G, Radelli L, Scorza Smeraldi R. NK cells in patients with peripheral neuropathy and IgM monoclonal protein reacting with the myelin-associated glycoprotein (MAG). J Neuroimmunol 1988; 18:207-16. [PMID: 2452829 DOI: 10.1016/0165-5728(88)90098-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We studied Leu 7+ cell distribution and natural killer (NK) activity in the peripheral blood of six patients who had peripheral neuropathy and monoclonal IgM protein directed against myelin-associated glycoprotein (anti-MAG IgM). We did not find any difference between patients and control subjects (healthy or polyneuropathic, some with IgM monoclonal paraprotein but without anti-MAG activity). The presence of autologous sera did not interfere with these results. We noted an increase in Leu 11+ cell percentages after pre-incubation of the patient cells with autologous sera but the phenotypes of cells from control subjects did not change after incubation with autologous or patient sera.
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683
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Hu C, Li JY, Jin ML, Yang BQ. [Pathologic study on the treatment-effect of hematoporphyrin derivative in carcinoma of the gastric cardia]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1988; 10:197-9. [PMID: 2851425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
42 patients with carcinoma of gastric cardia treated by HPD are reported. The endoscopic biopsy specimens of these patients were classified histologically before treatment. There were 2 papillary adenocarcinoma (PAC), 14 well differentiated adenocarcinoma (WDAC), 11 moderate differentiated adenocarcinoma (MDAC), 5 poor differentiated adenocarcinoma (PDAC), 6 mucinous adenocarcinoma (MAC), 1 undifferentiated carcinoma (UDC) and 3 squamous cell carcinoma (SCC). After four weeks' treatment, reexaminations by endoscopy and biopsy were done in 39 patients and operation were performed on three. Histologic changes following the treatment were degeneration, necrosis of tumor cells, and infiltration of lymphocytes and plasmacytes in the stroma to different degrees. The histologic changes were graded into H0, H1, H2 and H3 by the authors. Grades H0, H1 are considered as noneffective and grades H2, H3 as effective. Of 42 patients, 10 were H0, 21 H1, 8 H2 and 3 H3. The overall effective rate was 26.2% (11/42) which was correlated with the histologic type of carcinoma. Thus, 21.4% (3/14) of WDAC, 18% (2/11) of MDAC, 40% (2/5) of PDAC, 50% (3/6) of MAC and 100% (1/1) of UDC responded well to the treatment, but all SCC and PAC were refractory. It should also be noted that the HPD treatment was effective in patients with tumor infiltrations relatively limited and superficial in the gastric wall, but was unsatisfactory in patients with wider and deeper infiltrations.
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684
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Chang JJ, Hu C, Chang PC, Liu HY, Tu CN. Juvenile desmoplastic fibroma of mandible--a case report. ZHONGHUA YA YI XUE HUI ZA ZHI 1988; 7:35-40. [PMID: 3076072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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685
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Hu C, Carbonera D, van Huystee R. Production and Preliminary Characterization of Monoclonal Antibodies against Cationic Peanut Peroxidase. PLANT PHYSIOLOGY 1987; 85:299-303. [PMID: 16665674 PMCID: PMC1054245 DOI: 10.1104/pp.85.1.299] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Ten monoclonal antibodies (McAbs) have been produced against the cationic peroxidase from peanut suspension cell culture. Eight of these antibodies were found to be of the immunoglobulin (Ig)G(1) subclass and two were of IgA subclass. A combination of competitive enzyme-linked immunosorbent assay, Western blotting analysis, and direct antigen-binding assay revealed that the antibodies are directed against four different epitopes on the cationic peroxidase and the McAbs can be subdivided into four groups. Only group A inhibits peroxidase activity. Group B and D bind equally well to the native and the denatured form of cationic peroxidase, whereas the remaining McAbs react with more or less reduced affinity to the denatured antigen. Group C probably recognizes a conformation-dependent epitope. All the McAbs cross react weakly with the anionic peanut peroxidase, suggesting a structural nonidentity as well as some similarity between these two peroxidase isozymes. Cross reactivities of these McAbs with peroxidases of various plant species were also demonstrated.
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686
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Chang HK, Chou CK, Chang C, Su TS, Hu C, Yoshida M, Ting LP. The enhancer sequence of human hepatitis B virus can enhance the activity of its surface gene promoter. Nucleic Acids Res 1987; 15:2261-8. [PMID: 3031592 PMCID: PMC340632 DOI: 10.1093/nar/15.5.2261] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The transcriptional enhancer sequence has recently been demonstrated in the hepatitis B viral genome. This enhancer sequence has also been shown to increase the activity of HBcAg gene promoter. Using the chloramphenicol acetyltransferase gene expression system, we demonstrated that the intrinsic promoter activity of HBsAg gene promoter was stronger than that of HBcAg gene promoter in both human hepatoma cell lines, Hep3B and HuH-7. Furthermore, we showed that the HBV enhancer sequence not only stimulated the HBcAg gene promoter activity, but also stimulated the HBsAg gene promoter activity in both Hep3B and HuH-7 cells. The enhancer sequence increased the HBsAg gene promoter activity 20-fold in both Hep3B and HuH-7 cell lines, while the increase of the HBcAg gene promoter was 2- and 8-fold in Hep3B and HuH-7 cells, respectively.
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687
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Dong Y, Xu SQ, Hu C. [Mucofibrinous bronchitis: report of a case]. ZHONGHUA NEI KE ZA ZHI 1986; 25:739-40, 776. [PMID: 3568865] [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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688
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Jin JC, Hu C, Liu XL. [Argon laser treatment for primary angle-closure glaucoma]. YAN KE XUE BAO = EYE SCIENCE 1986; 2:33-8. [PMID: 3506846] [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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689
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Hu C. [Clinical application of the pneumo-tonometer]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 1986; 22:5-9. [PMID: 3089725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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690
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Saslow WM, Fulling SA, Hu C. Erratum: Statics and dynamics of spin and electric dipoles in three, four, and other dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:1830. [PMID: 9937233 DOI: 10.1103/physrevb.32.1830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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691
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Zhang HY, Liu MS, Wang XM, Li SH, Hu C. [The status of steroid receptors and hormone response in 7,12-dimethylbenz (a) anthracene (DMBA) induced rat mammary tumor]. SHI YAN SHENG WU XUE BAO 1985; 18:225-30. [PMID: 3012916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
MESH Headings
- 9,10-Dimethyl-1,2-benzanthracene
- Animals
- Carcinoma/chemically induced
- Carcinoma, Intraductal, Noninfiltrating/chemically induced
- Female
- Mammary Neoplasms, Experimental/analysis
- Mammary Neoplasms, Experimental/chemically induced
- Neoplasms, Hormone-Dependent/analysis
- Rats
- Rats, Inbred Strains
- Receptors, Estrogen/analysis
- Receptors, Progesterone/analysis
- Receptors, Steroid/analysis
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692
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Gertz EW, Wisneski JA, Chiu D, Akin JR, Hu C. Clinical superiority of a new nonionic contrast agent (iopamidol) for cardiac angiography. J Am Coll Cardiol 1985; 5:250-8. [PMID: 3881496 DOI: 10.1016/s0735-1097(85)80044-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The hemodynamic and electrophysiologic alterations induced by ionic contrast agents during cardiac angiography are well described. Recently nonionic contrast agents have become available for cardiac angiography. To evaluate the safety of these new agents, a double-blind randomized study was performed comparing a new nonionic agent (iopamidol) with a commonly used ionic contrast agent (Renografin-76). Eighty-one patients undergoing left ventriculography and coronary angiography were included; 41 received iopamidol and 40 received sodium meglumine diatrizoate (Renografin-76). After left ventriculography, there was a decrease in the arterial pressure with both contrast agents. However, the severity and the duration of hypotension were both significantly greater with Renografin-76 compared with the new nonionic agent (p less than 0.001). After selective injections of the coronary arteries, electrocardiographic analysis demonstrated that the increase in the QT interval (p less than 0.0002) and the changes in both the ST segment and T wave amplitude (p less than 0.001) were significantly greater in the Renografin-76 group compared with the iopamidol group. During coronary angiography, 8 of the 40 patients receiving Renografin-76 required temporary pacing for sinus pauses of 2.5 seconds or more, and 2 of the 40 also developed ventricular fibrillation. None of the 41 patients receiving iopamidol had these complications. This report demonstrates that the electrocardiographic changes, the severity and duration of hypotension and the incidence of serious arrhythmias are significantly greater with Renografin-76 than with iopamidol. Thus, this new nonionic agent appears to enhance the safety of cardiac angiography.
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693
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Saslow WM, Fulling SA, Hu C. Statics and dynamics of spin and electric dipoles in three, four, and other dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 31:364-371. [PMID: 9935437 DOI: 10.1103/physrevb.31.364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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694
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Hu C. [Topographical studies on the normal optic disk]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 1984; 20:218-21. [PMID: 6439520] [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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695
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Zhang CF, Hu C, McMeel JW. Long-term follow-up of solitary hemangioma of the choroid. ANNALS OF OPHTHALMOLOGY 1984; 16:126-30. [PMID: 6703584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Three cases of solitary hemangioma of the choroid are reported. One patient, followed for 22 years, was untreated, and the natural course was chronic and progressive. Although the tumor itself did not enlarge markedly, the serous detachment of the retina was extensive. Cystoid degeneration and deterioration of visual acuity was the final result. Two patients were treated with argon green laser and then followed for eight years and one year, respectively. Laser photocoagulation is the method of choice. Clinical characteristics and differential diagnosis are discussed. Early diagnosis and early treatment are important for preserving vision in an eye affected with hemangioma of the choroid.
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696
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Hu C. [Long-term effect of domestic timolol on patients with primary open-angle glaucoma]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 1984; 20:6-13. [PMID: 6434275] [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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697
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Zhang CF, Hu C. High incidence of retinal detachment secondary to macular hole in a Chinese population. Am J Ophthalmol 1982; 94:817-9. [PMID: 7180921 DOI: 10.1016/0002-9394(82)90314-2] [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: 01/23/2023]
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698
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Clement LT, Hu C, Shevach EM, Green I. Immunologic characterization of a granulocytic leukemia of inbred strain 13 guinea pigs: presence of Ia-positive myeloblasts. Blood 1980; 55:304-10. [PMID: 6444360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Membrane markers expressed by a transplantable granulocytic leukemia induced in inbred strain 13 guinea pigs by N-nitroso-N-butylurea have been investigated by serologic and immunochemical methods. Although the leukemic myeloblasts have no detectable surface immunoglobulin or Fc receptors, they have been found to synthesize and express membrane antigens encoded for by the I-region of the major histocompatibility complex. Despite the presence of Ia antigens, these cells do not stimulate allogeneic T lymphocytes in the mixed lymphocyte reaction nor are they able to present soluble antigen to immune T cells. The presence of Ia antigens on immature myeloid cells suggests that these proteins may be important in cellular functions beyond those identified in the cellular immune system.
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699
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Abstract
Immune serum, obtained from animals that had survived sublethal challenge with RE virus, was very effective in achieving tumor cures in chickens infected with this virus. The therapeutic effect could also be obtained by the immunoglobulin fraction of immune serum. The serum did not influence the development of an unrelated malignancy. Serotherapy studies in Bx and Tx recipients indicate that the B-cell or T-cell system of the host does not significantly contribute to the curative activity of immune serum. Absorption studies show that the curative effect is mediated by antibodies to tumor-associated transplantation antigens on tumor cells, not by antiviral antibodies.
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700
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Linna TJ, Hu C, Lam KM. Host protection by the antibody-forming system in malignancy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1976; 66:415-21. [PMID: 57703 DOI: 10.1007/978-1-4613-4355-4_64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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