701
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Abstract
A long-term follow-up study of 144 cases with surgically and pathologically proved small hepatocellular carcinoma (less than or equal to 5 cm) from 1967 to 1987 is reported. One hundred eight cases (75.0%) were detected by alpha-fetoprotein serosurvey and/or ultrasonography mainly in a high-risk population; 129 cases (89.6%) coexisted with cirrhosis. Resection was done in 132 cases (91.7%) with three (2.3%) operative deaths; cryosurgery, laser vaporization, and hepatic arterial chemotherapy were used in the rest. Limited resection was done in 67.4% of resections. Reresection of subclinical recurrence or solitary pulmonary metastasis was done in 21 cases. The 5-year and 10-year survival rates were 67.9% and 53.4% in the resection group but zero in the nonresection group. Survival was correlated negatively with tumor size, 5-year survival after resection was 84.6% in tumors less than or equal to 2 cm but 59.5% in tumors of 4.1 to 5 cm. The increase of resectability and reresection resulted in marked improved of 5-year survival from 43.5% in 1973 to 1977 to 63.3% in 1978 to 1982 in the entire series. No significant difference was found between survival of limited resection and lobectomy. Resection may be the modality of choice for treatment of small hepatocellular carcinomas with compensated liver function. Limited resection instead of lobectomy was the key to increased resectability and decreased operative mortality in cirrhotic livers. Reresection of subclinical recurrence was important to prolong survival further.
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702
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Edstrom RD, Meinke MH, Yang X, Yang R, Evans DF. Direct observation of phosphorylase kinase and phosphorylase b by scanning tunneling microscopy. Biochemistry 1989; 28:4939-42. [PMID: 2516465 DOI: 10.1021/bi00438a004] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The molecular structures of phosphorylase b and phosphorylase kinase have been visualized by scanning tunneling microscopy (STM). STM is a near field technique that can resolve structures at the nanometer level and thus can image individual molecules. Phosphorylase b can be seen in dimeric and tetrameric forms as well as linear and globular aggregates. The linear arrays consist of side by side dimers with the long axis of the dimer perpendicular to the aggregated chain. Individual molecules of phosphorylase kinase appear to be planar, bilobate structures with a 2-fold axis of symmetry and a central depression.
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703
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Yamashiroya HM, Ghosh L, Yang R, Robertson AL. Herpesviridae in the coronary arteries and aorta of young trauma victims. THE AMERICAN JOURNAL OF PATHOLOGY 1988; 130:71-9. [PMID: 2827495 PMCID: PMC1880556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The presence of herpes simplex virus (HSV) and cytomegalovirus (CMV) nucleic acid and/or antigen was demonstrated in the coronary arteries and thoracic aortas of young trauma victims by the in situ DNA hybridization and ABC immunoperoxidase methods, respectively. Epstein-Barr virus (EBV) nucleic acid and capsid antigen were not detected in the arteries sampled in this study. Of 8 subjects in which virus was detected in the coronary arteries, 6 were positive for HSV and 2 for CMV; of 7 cases positive in the thoracic aorta, 5 were identified as HSV and 2 as CMV. Viral DNA and/or antigen were found in occasional cells in the intact luminal surface and in focal clusters of spindle-shaped or "foamy" cells in the intimal layer. The histologic findings indicate that HSV and CMV are associated with areas showing early or advanced atheromatous changes in the coronary arteries and with lesion-free as well as lesion areas in the thoracic aorta. The virologic findings support the concept that herpes-viruses may potentially play a direct or indirect role in the pathogenesis of human atherosclerosis.
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704
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Wang PY, Gao YF, Tong WX, Zhang YH, Jia L, Yang R. [Misdiagnosis of malignant lymphoma--report of 45 patients]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1987; 9:439-41. [PMID: 3452541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A series of 50 patients with malignant lymphoma, proven by biopsy, was retrospectively studied. 39 were non-Hodgkin's lymphoma and 11 Hodgkin's disease. 45 (90%) had been misdiagnosed because of lack of initial specific symptoms. It is suggested that for patients with a painless progressively enlarging superficial lymph node without adhering to its surrounding tissues and irresponsive to general management, having irregular fever, bloody stool, abdominal pain or mass, complication of partial intestinal obstruction, sharp vigilance be kept for the possibility of malignant lymphoma.
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705
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Jin H, Oparil S, Ann HS, Yang R, Jackson RM. Hypoxia-induced inhibition of converting enzyme activity: role in vascular regulation. J Appl Physiol (1985) 1987; 63:1012-8. [PMID: 2820918 DOI: 10.1152/jappl.1987.63.3.1012] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Systemic and pulmonary vascular reactivity to graded doses of angiotensin I (ANG I), angiotensin II (ANG II), and, as a control, phenylephrine were examined in 14- or 28-day hypoxia-exposed and air control rats. Hypoxic rats exhibited pulmonary hypertension that was reversible on return to room air, but systemic arterial pressure was not altered by hypoxia. Systemic pressor responses to ANG I and ANG II were significantly less in the hypoxic rats than in the control rats at 14 and 28 days but returned to control levels in hypoxic animals that were then returned to room air, demonstrating reversibility of the hypoxia-induced changes in vascular reactivity. Pulmonary pressor responses to ANG I were significantly less at 14 days, whereas responses to ANG II were significantly greater at 28 days, in hypoxic rats than in controls. There were no significant differences in systemic and pulmonary pressor responses to phenylephrine between the hypoxic and air control animals. The altered systemic and pulmonary pressor responsiveness to ANG I and ANG II in hypoxic rats is probably related to mechanisms specific to the renin-angiotensin system, such as inhibition of intrapulmonary angiotensin-converting enzyme activity and down regulation of ANG II receptors in the systemic circulation. Further study is needed to elucidate these mechanisms.
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706
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Yang R, Elliston L, Peterson R, Sahmel R. Dysphagia and cough in a patient with a posterior mediastinal mass. Chest 1987; 92:529-30. [PMID: 3622032 DOI: 10.1378/chest.92.3.529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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707
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Yang R, Wu C, Yip GL. Approximate formulas for the microbending loss in single-mode fibers. OPTICS LETTERS 1987; 12:428-430. [PMID: 19741754 DOI: 10.1364/ol.12.000428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Some approximate formulas for calculating the microbending loss for single-mode fibers are given. The formulas are rather simple, yield good approximate values, and hence can be used to evaluate the microbending loss in fiber design.
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708
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Huang SK, Wu X, Hang S, Yang R, Zhuo HT. [A combined perfusion-compartmental pharmacokinetic model used to estimate presystemic metabolism of erythromycin in dogs]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1986; 7:342-6. [PMID: 2954396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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709
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Ohba T, Yang R, Chen C, Ogawa Y, Katayama H. Experimental Explanation of Maxillary Sinus Radiopacity as Seen by Waters' and Panoramic Projections. Dentomaxillofac Radiol 1986. [DOI: 10.1259/dmfr.1986.0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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710
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Bhattacharya S, Overton S, Yang R, Raz S. Repair of upper ureteric obstruction with Boari flap and psoas hitch. Urology 1986; 27:451-3. [PMID: 3705279 DOI: 10.1016/0090-4295(86)90413-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A case of iatrogenic traumatic obstruction to both upper and lower ureters resulting in severe hydronephrosis is reported. Continuity and good functional result was achieved with a Boari flap and psoas hitch to the renal pelvis.
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711
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Dzik WH, Yang R, Blank J. Rabbit erythrocyte stroma treatment of serum interferes with recognition of delayed hemolytic transfusion reaction. Transfusion 1986; 26:303-4. [PMID: 3085296 DOI: 10.1046/j.1537-2995.1986.26386209397.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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712
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Ohba T, Yang R, Chen C, Ogawa Y, Katayama H. Experimental explanation of maxillary sinus radiopacity as seen by Waters' and panoramic projections. Dentomaxillofac Radiol 1985; 14:133-6. [PMID: 3869567 DOI: 10.1259/dmfr.1985.0019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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713
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Mlika N, Larouze B, Dridi M, Yang R, Gharbi S, Jemmali M, Gaudebout C, Rousset JJ. Serologic survey of human hydatid disease in high risk populations from central Tunisia. Preliminary results. Am J Trop Med Hyg 1984; 33:1182-4. [PMID: 6507730 DOI: 10.4269/ajtmh.1984.33.1182] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The annual surgical incidence rate of hydatid disease in central Tunisia varies from 11.1 to 30.1 per 100,000 population depending on the district. In order to obtain more comprehensive data, we conducted a serologic survey in the district with the highest rate, using hemagglutination-inhibition to test 480 workers from a state farm and 190 inhabitants of villages in the neighborhood. The overall prevalence rate was 1.3% (9/670). Echotomography revealed liver cysts in all cases and the diagnosis was confirmed in the eight subjects who underwent surgery. If these preliminary results are confirmed by further surveys, mass screening might be considered in high risk districts.
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714
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Yang R. Gastrointestinal tract complications of diabetes mellitus. Pathophysiology and management. ACTA ACUST UNITED AC 1984. [DOI: 10.1001/archinte.144.6.1251] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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715
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Yang R, Arem R, Chan L. Gastrointestinal tract complications of diabetes mellitus. Pathophysiology and management. ARCHIVES OF INTERNAL MEDICINE 1984; 144:1251-1256. [PMID: 6375614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Diabetes mellitus can affect every organ system, including large and small blood vessels, eyes, nerves, kidneys, and the gastrointestinal (GI) tract. We reviewed recent knowledge concerning the impact of diabetes on the gut. While the incidence of GI tract complications is usually considered relatively low, functional alterations have been demonstrated at every level in the gut and account for considerable morbidity in the diabetic population.
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716
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Yang R, Fristensky B, Deutch AH, Huang RC, Tan YH, Narang SA, Wu R. The nucleotide sequence of a new human repetitive DNA consists of eight tandem repeats of 66 base pairs. Gene 1983; 25:59-66. [PMID: 6662363 DOI: 10.1016/0378-1119(83)90167-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Three cloned human DNA fragments obtained from a fibroblast genomic DNA were sequenced and identified as containing members of the well-known 300-bp Alu family of interspersed, middle-repetitive DNA sequences. One of these cloned DNA fragments, p16, also contains members of a new repetitive DNA family, which repeats several thousand times in the human genome. Each member of the new 528-bp family consists of eight tandem repeats of a 66-bp sequence. An AluI recognition site is present at the same location in each repeat, and a 25-bp sequence occurs twice (as a tandem repeat) in each of the eight repeats. There is no sequence homology between the new 528-bp family and the 300-bp Alu family, and the new family lacks the flanking 7- to 20-bp direct repeats as well as the dAMP-rich sequences characteristic of the 300-bp Alu family. Construction of a putative evolutionary tree indicates that six duplication events are needed to give rise to the eight tandemly repeated 66-bp units in the new 528-bp family.
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717
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Yang CT, Yang R, Hou YD. Interferon activity produced by interferon messenger RNA in Tilapiamosaiabica peters oocytes. MICROBIOLOGICA 1983; 6:261-75. [PMID: 6198582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The activities of interferon mRNA from various types of mouse cells have been studied using Tilapiamosaiabica peters oocytes (TPO) as the translation system. The translation activity of interferon mRNA in TPO was also compared with that in Xenopus laevis oocytes (XLO). The results obtained showed similar translation efficiency in both systems. The highest translation efficiency was observed when T. peters oocytes, microinjected with mRNA, were cultivated in Eagle's medium containing 0.01% HEPES and 0.5% NaHCO3 (pH 7.5) at 25 degrees C. pppA2' P5' A2' P5' A in concentration of 500 nM did not affect the translation of interferon mRNA in oocytes, but inhibition was demonstrated at 1 microM. A linear relationship was found between the amount of interferon mRNA injected and the antiviral activity of the translation products, suggesting that the amount of interferon mRNA can be determined by assaying the interferon activity of its translation product.
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718
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Uneoka M, Yang R, Ohba T. [Garré's osteomyelitis of the mandible]. RINSHO HOSHASEN. CLINICAL RADIOGRAPHY 1982; 27:1283-6. [PMID: 7154316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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719
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Carter GT, Schiesswohl RE, Burke H, Yang R. Peak homogeneity determination for the validation of high-performance liquid chromatographic assay methods. J Pharm Sci 1982; 71:317-21. [PMID: 7069589 DOI: 10.1002/jps.2600710314] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
To validate high-performance liquid chromatographic assay procedures with regard to specificity, methods were developed to determine the homogeneity of the chromatographic peaks. These methods employed a rapid-scanning UV-visible spectrophotometer to monitor the chromatographic effluent. The absorption data were processed to nullify the signal due to the drug substances specifically, while allowing the detection of coincident impurities. Results from three model systems indicated the ability of these methods to detect as little as 0.1% of a coincident impurity.
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720
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Song R, Ling Y, Wang G, Yang R. One-stage reconstruction of the nose. The island frontal flap and the "conjoined" frontal flap. Clin Plast Surg 1982; 9:37-44. [PMID: 7094522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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721
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He SZ, An SY, Jiang HM, Yang R, Cao YF. Cyst decapitating decompression operation in polycystic kidney: preliminary report of 52 cases. Chin Med J (Engl) 1980; 93:773-8. [PMID: 6775888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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722
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723
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Ripert C, Riedel D, Yang R, Fouda Onana A, Zimflou IA. [Epidemiological study of onchocercosis in 5 villages of the valley of the Sanaga (Cameroon)]. BULLETIN DE LA SOCIETE DE PATHOLOGIE EXOTIQUE ET DE SES FILIALES 1977; 70:178-86. [PMID: 579619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The study carried out in five villages in the Sanaga Valley of Cameroon was concerned with the prevalence of the disease, the level of infection and an evaluation of the effect of the parasites on the health of the people. Entomological data were also collected. The study was concerned with the onchocerciasis found in the forest area where the disease is hyperendemic. The males are infected moreoften than the females. Among the adults the skin and lymphatic lesions are extremly important. It was found that as the visual acuity diminishes with age, from age forty many for the people are blind. The villages most affected are those situated near the Sanaga rapids where there is a concentration of the breeding sites of the vectors.
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724
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Hall SM, Loeb P, Norton J, Yang R. Improving vocational placement in drug treatment clients: a pilot study. Addict Behav 1977; 2:227-34. [PMID: 343521 DOI: 10.1016/0306-4603(77)90021-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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725
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Yang R, Danna K, Van de Voorde A, Fiers W. Location of the small restriction fragments, Hind-L, Hind-M and Hpa-E, on the simian virus 40 genome. Virology 1975; 68:260-5. [PMID: 171849 DOI: 10.1016/0042-6822(75)90167-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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