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Li B, Li ZB, Wang JP, Zhao L, Wang ZH, Wu JD, Liu B. [Comparison among different flushing media for intracoronary imaging with optical coherence tomography]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:144-149. [PMID: 38326065 DOI: 10.3760/cma.j.cn112148-20231030-00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Objective: To explore the effects and safety of saline mixed 1∶1 with contrast medium (mixed medium) and pure heparinized saline as alternative media for optimal Optical Coherence Tomography (OCT) guided percutaneous coronary intervention (PCI). Methods: This single-center, prospective cohort study enrolled patients who underwent PCI with OCT guidance for chronic stable angina or acute coronary syndrome at the Department of Cardiology, the Second Hospital of Jilin University from October 2021 to August 2022. The target vessels were examined using OCT with three different flushing media at the same anatomical positions: contrast agent, mixed medium, and pure heparinized saline. An independent observer analyzed all imaging results and evaluated the lumen imaging quality, using the proportion of the clear imaging field (CIF%) as a quantitative measure for analysis. The average luminal diameter was compared among different flushing media. The study also assessed the image quality of the luminal anatomical structures, lesion pathologies, and stents. Results: A total of 105 patients were enrolled in the study, including 110 target vessels. The age of the enrolled patients was (60.5±8.4) years, with 60 male patients (57.1%). OCT examinations were successfully completed using all three media, and no related complications were observed in any groups. The three flushing media presented with the same image quality in terms of depicting the lumen anatomical structures, lesion characteristics, and stent-related features. The mixed medium group achieved a comparable CIF% to the contrast group with both right and left coronary arteries (right coronary 100.0% (100.0%, 100.0%) vs. 100.0% (100.0%, 100.0%), P>0.05; left coronary 100.0% (95.9%, 100.0%) vs. 100.0% (100.0%, 100.0%), P>0.05). While the saline group reached a comparable CIF% to the contrast group with right coronary arteries (100.0% (97.6%, 100.0%) vs. 100.0% (95.9%, 100.0%), P>0.05) but showed a significantly lower CIF% with left coronary arteries (84.9% (75.9%, 93.4%) vs. 100.0% (100.0%, 100.0%), P<0.05). For the average diameter of the coronary lumen, there was no statistically significant difference between the mixed medium group and the saline group compared to the contrast group with both right and left coronary arteries (P>0.05). Conclusions: A 1∶1 heparinized saline and contrast mixture can serve as a substitute flushing medium for OCT examination during PCI procedure. Pure saline can also yield good results in OCT examination of the right coronary artery, and both alternatives are safe for use as flushing medium in OCT imaging.
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Affiliation(s)
- B Li
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
| | - Z B Li
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
| | - J P Wang
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
| | - L Zhao
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
| | - Z H Wang
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
| | - J D Wu
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
| | - B Liu
- Department of Cardiology, the Second Hospital of Jilin University, Changchun 130000, China
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Liu S, Ma JY, Zhou J, Wu JD, Li JH, Alugongo GM, Xiao JX, Wang JJ, Wang YJ, Wang W, Li SL, Cao ZJ. Tributyrin supplementation in pasteurized waste milk: Effects on growth performance, health, and blood parameters of dairy calves. J Dairy Sci 2021; 104:12496-12507. [PMID: 34593232 DOI: 10.3168/jds.2021-20645] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/13/2021] [Indexed: 01/01/2023]
Abstract
This study evaluated the effects of incremental tributyrin supplementation in pasteurized waste milk on growth performance, health, and blood metabolism of dairy calves before and after weaning. Forty-eight newborn female Holstein dairy calves (39.6 ± 2.75 kg; mean ± standard deviation) were blocked by age and randomly assigned to 3 treatments: pasteurized waste milk (1) without supplementation, (2) with 1 g/L of tributyrin products (unprotected solid powder; containing 35% tributyrin), or (3) with 2 g/L of tributyrin products. The calves were weaned on d 56 and were raised until d 77. Data were analyzed for the preweaning, postweaning, and overall periods. The results showed that starter intake and hay intake were not different among treatments in any period of the trial, but the crude protein intake tended to increase linearly with tributyrin supplementation during the overall period. Although tributyrin supplementation had no effects on body weight during preweaning and overall periods, body weight increased linearly with tributyrin supplementation postweaning. The average daily gain tended to increase linearly during postweaning and overall periods. No effects were observed on feed efficiency in any period. A positive linear relationship between body length and tributyrin supplementation was observed during the postweaning period, but no differences were found for the other body structural measurements in any period. The results of diarrhea showed that tributyrin concentration had a negative linear relationship with diarrhea frequency during preweaning and overall periods. The rectal temperature did not differ among treatments in any period, but a treatment × week effect for rectal body temperature was observed. For blood metabolism, tributyrin supplementation had no effects on insulin, growth hormone, total protein, albumin, or globulin. No differences were found in serum amyloid A concentration in any of the periods, yet haptoglobin concentration decreased linearly with increasing tributyrin concentration during postweaning and overall periods. Endothelin concentration showed a tendency to decrease linearly during preweaning and postweaning periods and decreased linearly with tributyrin supplementation during the overall period. An increasing tributyrin concentration was associated with a negative linear relationship with IL-1β concentration during the preweaning period, and no differences were found in the other periods. The concentration of IL-6 and tumor necrosis factor α were not different among treatments in any of the periods. These data suggest that increasing the concentration of tributyrin in pasteurized waste milk could increase growth performance and health of dairy calves, and incremental tributyrin supplementation could linearly reduce haptoglobin, endothelin, and IL-1β concentrations, indicating a positive effect of tributyrin on alleviating oxidative stress and inflammatory status of dairy calves. Calves fed pasteurized waste milk supplemented with tributyrin products (containing 35% tributyrin) at 2 g/L compared with 1 g/L of milk had more improved growth and health.
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Affiliation(s)
- S Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - J Y Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - J Zhou
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - J D Wu
- Institute of Husbandry and Veterinary, Guizhou Provincial Academy of Agricultural Sciences, Guizhou 550005, P. R. China
| | - J H Li
- Department of Animal Science, University of California, Davis 95616
| | - G M Alugongo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - J X Xiao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - J J Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - Y J Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - W Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - S L Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
| | - Z J Cao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China.
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Guo P, Zhang SW, Zhang J, Dong JT, Wu JD, Tang ST, Yang JT, Zhang WJ, Wu F. Effects of imipenem combined with low-dose cyclophosphamide on the intestinal barrier in septic rats. Exp Ther Med 2018; 16:1919-1927. [PMID: 30186419 PMCID: PMC6122399 DOI: 10.3892/etm.2018.6373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 05/25/2018] [Indexed: 12/29/2022] Open
Abstract
Anti-infection therapy combined with immunotherapy is one of the important research approaches for treating sepsis. However, the combination of anti-infection and immunotherapy therapeutic agents may have an adverse effect on intestinal barrier function. In the present study, it was hypothesized that imipenem combined with low-dose cyclophosphamide (CTX) could improve the sepsis survival rate compared with imipenem treatment alone. In addition, the alterations in the intestinal barrier were investigated and the possible mechanisms of altering intestinal barrier function in septic rats treated with imipenem combined with low-dose CTX or imipenem alone were explored. To investigate the effect of imipenem combined with low-dose CTX on the intestinal barrier, the markers of histopathology, intestinal permeability, intestinal epithelial apoptosis, cytokines interleukin (IL)-6, IL-10 and tumor necrosis factor (TNF)-α, and tight junction proteins zonula occludens (ZO)-1, occludin and claudin-2, were quantitatively and qualitatively evaluated. The results indicated that imipenem combined with low-dose CTX significantly improved the survival rate of rats compared with imipenem alone (P<0.05). However, no significantly difference between the treatment with imipenem combined with low-dose CTX and imipenem treatment alone was indicated with regard to histopathology, intestinal permeability, intestinal epithelial apoptosis and the expression of claudin-2, ZO-1 and TNF-α. However, imipenem combined with low-dose CTX significantly reduced IL-6 and IL-10 expression and significantly increased occludin expression compared with imipenem alone (P<0.05). It was concluded that imipenem combined with low-dose CTX could improve the survival rate of rats with sepsis compared with rats treated with imipenem alone. The present findings suggest that imipenem combined with low-dose CTX may cause damage to the intestinal barrier function and the mechanism may be associated with a reduction in IL-10 expression.
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Affiliation(s)
- Peng Guo
- Department of Critical Care Medicine, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832000, P.R. China
| | - Shun-Wen Zhang
- First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Jie Zhang
- Department of Emergency, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832000, P.R. China
| | - Jiang-Tao Dong
- Department of Neurosurgery, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832000, P.R. China
| | - Jiang-Dong Wu
- Department of Pathophysiology, Shihezi University School of Medicine/Key Laboratory of Xinjiang Endemic and Ethnic Diseases/Collaborative Innovation Center of High Incidence of Zoonotic Communicable Disease Prevention in The Western Region, Shihezi, Xinjiang 832000, P.R. China
| | - Su-Tu Tang
- Department of Critical Care Medicine, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832000, P.R. China
| | - Jun-Ting Yang
- Department of Pathophysiology, Shihezi University School of Medicine/Key Laboratory of Xinjiang Endemic and Ethnic Diseases/Collaborative Innovation Center of High Incidence of Zoonotic Communicable Disease Prevention in The Western Region, Shihezi, Xinjiang 832000, P.R. China
| | - Wan-Jiang Zhang
- Department of Pathophysiology, Shihezi University School of Medicine/Key Laboratory of Xinjiang Endemic and Ethnic Diseases/Collaborative Innovation Center of High Incidence of Zoonotic Communicable Disease Prevention in The Western Region, Shihezi, Xinjiang 832000, P.R. China
| | - Fang Wu
- Department of Pathophysiology, Shihezi University School of Medicine/Key Laboratory of Xinjiang Endemic and Ethnic Diseases/Collaborative Innovation Center of High Incidence of Zoonotic Communicable Disease Prevention in The Western Region, Shihezi, Xinjiang 832000, P.R. China
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Abstract
Fifty-four patients with Inoperable cancers were treated with a combination of cisplatin and radiotherapy from May 1984 to February 1989. Cisplatin was administered at a dose of 40 mg/week, for a total dose of 160-320 mg, during radiation therapy. In 4 cases with brain metastases, the cisplatin dose was 40 mg/m2. Cisplatin concentration in blood was measured using the flameless atomic absorption spectrophotometric method. Radiation therapy was delivered by a 6 MV X-ray or a cobalt-60 unit up to a total dose of 50-70 Gy. Among the 54 patients, 89% (48) responded to the treatment regimen; complete responses (CR) and partial responses (PR) were 56% and 33%, respectively. Six patients were stable in their disease. Among the 30 patients who had CR's, the 1-year survival rate was 88% (21/24). Two patients (7%) had local relapse. However, among PRs, the 1-year survival rate was 33% (4/12) and local failure (61%) (11/18). Objective tumor response was observed in 4 cases with brain metastasis, 2 of the 4 patients were alive for more than 6 months. Toxic effects were moderate and consisted of emesis and myelosuppression. Grade III bone marrow suppression amounted to 11%, and the interval of recovery was relatively long compared with that reported in the literature. Further prospective controlled studies are recommended.
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Affiliation(s)
- Y H Bao
- Department of Oncology, North Tai Ping Road Hospital Cancer Center, Beijing, China
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Zhang DL, Zhang SW, Cheng QH, Wu F, Wu JD, Zhang J, Dong JT, Zhu HY, Zhang S, Wu QQ, Zhang WJ. Effects of peritoneal macrophage autophagy on the immune function of sepsis mice. Am J Clin Exp Immunol 2017; 6:52-59. [PMID: 28695057 PMCID: PMC5498851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/30/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the effect of peritoneal macrophage autophagy on immune function in sepsis mice. METHODS Seventy-two male BALB/C mice were intraperitoneally injected with LPS to induce sepsis. The mice were randomly divided into six groups: LPS+2 h, LPS+6 h, LPS+12 h, LPS+24 h and LPS+36 h. LPS with a dose of 10 mg/kg was intraperitoneally injected into the abdominal cavity of the sepsis mice, and the control group was injected with the same dose of saline. ELISA was used to detect the concentrations of inflammatory factors IL-2, IL-10 and TNF-α in the peripheral blood, and the CD4+T/CD8+T ratio in the peripheral blood was detected by flow cytometry. The expression levels of LC3II and Beclin-1/beta-action in the mouse macrophages were measured using Western blot to determine the level of autophagy. RESULTS The expression levels of LC3II and Beclin-1 were significantly higher in the peritoneal macrophages of the mice from the LPS+2 h group than in those of the mice from the normal group (P<0.05). Meanwhile, these levels continuously declined in the LPS+6 h, LPS+12 h, LPS+24 h and LPS+36 h groups (P<0.05). The peripheral blood CD4+T/CD8+T cell ratio was significantly higher in the LPS+2 h and LPS+6 h groups than in the normal group (P<0.05). The ratio peaked at 6 h and then continuously declined (P<0.05). Furthermore, the concentrations of IL-2 and Tnf-α were significantly higher in the peripheral blood serum of the LPS+2 h, LPS+6 h and LPS+12 h groups than in those of the normal group (P<0.05). The peak was observed at 12 h followed by a continuous decline in the LPS+24 h and 3 LPS+6 h groups (P<0.05). The peripheral serum IL-10 concentration was significantly higher in the LPS+2 h, LPS+6 h, LPS+12 h, LPS+24 h and LPS+36 h groups than in the normal group (P<0.05). In the LPS+6 h, LPS+12 h, LPS+24 h and LPS+36 h groups, the peritoneal macrophages LC3II, Beclin-1 and peripheral serum CD+4T/CD+8T ratio correlation index R2=0.716 (P=0.043), R2=0.954 (P=0.023). CONCLUSION Autophagy in peritoneal macrophages plays an important role in the immune function of sepsis mice. In addition, the autophagy of peritoneal macrophages and the immune function of sepsis mice are strongly correlated. Furthermore, macrophage autophagy plays an important role in the immune function changes in sepsis mice, and the underlying mechanism may be involved in inflammation and macrophage antigen presentation by regulating the secretion of inflammatory cytokines and lymphocyte apoptosis antagonism.
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Affiliation(s)
- Da-Long Zhang
- The First Affiliated Hospital, School of Medicine, Shihezi UniversityShihezi 832002, Xinjiang, China
| | - Shun-Wen Zhang
- School of Basic Medical Sciences, Nanjing Medical UniversityNanjing 211166, Jiangsu Province, China
| | - Qing Hong Cheng
- The First Affiliated Hospital, School of Medicine, Shihezi UniversityShihezi 832002, Xinjiang, China
| | - Fang Wu
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Department of Pathophysiology, School of Medicine, Shihezi University, Collaborative Innovation Center of High Incidence of Zoonoses Communicable Disease Prevention in the Western RegionShihezi 832002, Xinjiang, China
| | - Jiang-Dong Wu
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Department of Pathophysiology, School of Medicine, Shihezi University, Collaborative Innovation Center of High Incidence of Zoonoses Communicable Disease Prevention in the Western RegionShihezi 832002, Xinjiang, China
| | - Jie Zhang
- The First Affiliated Hospital, School of Medicine, Shihezi UniversityShihezi 832002, Xinjiang, China
| | - Jiang-Tao Dong
- The First Affiliated Hospital, School of Medicine, Shihezi UniversityShihezi 832002, Xinjiang, China
| | - Hui-Yun Zhu
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Department of Pathophysiology, School of Medicine, Shihezi University, Collaborative Innovation Center of High Incidence of Zoonoses Communicable Disease Prevention in the Western RegionShihezi 832002, Xinjiang, China
| | - Shuai Zhang
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Department of Pathophysiology, School of Medicine, Shihezi University, Collaborative Innovation Center of High Incidence of Zoonoses Communicable Disease Prevention in the Western RegionShihezi 832002, Xinjiang, China
| | - Qing-Qing Wu
- The First Affiliated Hospital, School of Medicine, Shihezi UniversityShihezi 832002, Xinjiang, China
| | - Wan-Jiang Zhang
- The First Affiliated Hospital, School of Medicine, Shihezi UniversityShihezi 832002, Xinjiang, China
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Department of Pathophysiology, School of Medicine, Shihezi University, Collaborative Innovation Center of High Incidence of Zoonoses Communicable Disease Prevention in the Western RegionShihezi 832002, Xinjiang, China
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Lu LJ, Zuo WZ, Zhang WJ, Zhang L, Wu F, Wu JD. [Identification of A Novel HLA Allele DRB1 * 16:36 by Sequencing-Based Typing]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2016; 23:1455-8. [PMID: 26524056 DOI: 10.7534/j.issn.1009-2137.2015.05.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To identify a novel HLA allele DRB1 * 16:36 from a Uygur woman. METHODS PCR-SBT technology was applied to the extracted DNA for genotyping, and a possible new gene was sequenced by using sequence specific primers and single stranded SBT. This novel allele was compared with known most homologous gene sequences and their difference was analyzed. RESULTS This novel allele was different from HLA alle DRB1 * 16:23, and had highest similarity in 2 nucleotides at position 227 A→T and 236 T→C in exon 2, resulting in 3 amino acid changes from Tyr to Phe at codon 47 and Val to Ala at codon 50. The sequence of this novel allele had been submitted to GenBank. CONCLUSION This HLA allele DRB1 * 16:23 has been confirmed to be a novel allele, and has been officially named DRB1 * 16:36 by the World Health Organization (WHO) Nomenclature Committee in May 2015.
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Affiliation(s)
- Li-Jun Lu
- State Key Laboratory, Ministry of Education, Shihezi University Medical College; Shihezi 832000, Xinjiang Uygur Autonomous Region, China.,Department of Infectiou Disease, The First Affiliated Hospital of Shihezi University Medical College, Shihezi 832000, Xinjiang Uygur Autonomous Region, China
| | - Wei-Ze Zuo
- Department of Infectiou Disease, The First Affiliated Hospital of Shihezi University Medical College, Shihezi 832000, Xinjiang Uygur Autonomous Region, China
| | - Wan-Jiang Zhang
- State Key Laboratory, Ministry of Education, Shihezi University Medical College; Shihezi 832000, Xinjiang Uygur Autonomous Region, China
| | - Le Zhang
- State Key Laboratory, Ministry of Education, Shihezi University Medical College; Shihezi 832000, Xinjiang Uygur Autonomous Region, China
| | - Fang Wu
- State Key Laboratory, Ministry of Education, Shihezi University Medical College; Shihezi 832000, Xinjiang Uygur Autonomous Region, China
| | - Jiang-Dong Wu
- State Key Laboratory, Ministry of Education, Shihezi University Medical College; Shihezi 832000, Xinjiang Uygur Autonomous Region, China. E-mail:
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Xu QY, Yin GW, Chen SX, Jiang F, Bai XJ, Wu JD. Fluoroscopically guided nose tube drainage of mediastinal abscesses in post-operative gastro-oesophageal anastomotic leakage. Br J Radiol 2012; 85:1477-81. [PMID: 22806622 DOI: 10.1259/bjr/53905073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The aim of this study was to retrospectively evaluate the technical success rates and clinical effectiveness of fluoroscopically guided nose tube drainage of mediastinal abscesses and a nasojejunum feeding tube in post-operative gastro-oesophageal anastomotic leakage (GEAL). METHODS From January 2006 to June 2011, 18 cases of post-operative GEAL with mediastinal abscesses after oesophagectomy with intrathoracic oesophagogastric anastomotic procedures for oesophageal and cardiac carcinoma were treated by insertion of a nose drainage tube and nasojejunum feeding tube under fluoroscopic guidance. We evaluated the feasibility of two-tube insertion to facilitate leakage site closure and complete resolution of the abscess, and the patients' nutritional benefit was also evaluated by checking the serum albumin level between pre- and post-enteral feeding via the feeding tube. RESULTS The two tubes were placed successfully under fluoroscopic guidance in 18 patients (100%). The procedure time for two-tube insertion ranged from 20 to 40 min (mean 30 min). 17 patients (94%) achieved leakage site closure after two-tube insertion and had a good tolerance of two tubes in the nasal cavity. The serum albumin level was significant, increased from pre-enteral feeding (2.49 ± 0.42 g dl(-1)) to the post-enteral feeding (3.58 ± 0.47 g dl(-1)) via the feeding tube (p<0.001). The duration of follow-up ranged from 1 to 49 months (mean 19 months). CONCLUSION The insertion of nose tube drainage and a nasojejunum feeding tube under fluoroscopic guidance is safe, and it provides effective relief from mediastinal abscesses in GEAL after oesophagectomy. Moreover, our findings indicate that two-tube insertion may be used as a selective procedure to treat mediastinal abscesses in post-operative GEAL. Advances in knowledge Directive drainage of mediastinal abscesses in post-operative GEAL may be an effective treatment.
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Affiliation(s)
- Q Y Xu
- Department of Interventional Radiology, Cancer Hospital of Jiangsu Province, Cancer Institution of Jiangsu Province, Nanjing, China
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Jiang K, Zhu JJ, Wu JD, Sun J, Hu ZG, Chu JH. Influences of oxygen pressure on optical properties and interband electronic transitions in multiferroic bismuth ferrite nanocrystalline films grown by pulsed laser deposition. ACS Appl Mater Interfaces 2011; 3:4844-4852. [PMID: 22103473 DOI: 10.1021/am201340d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Bismuth ferrite (BiFeO(3)) nanocrystalline films with the crystalline size of 27-40 nm have been grown on c-sapphire substrates under various oxygen pressures of 1 × 10(-4) to 1 Pa by pulsed laser deposition. The X-ray diffraction spectra show that the films are polycrystalline and present the pure rhombohedral phase. It was found that the Raman-active phonon mode E(TO1) shifts towards a higher energy side from 74 to 76 cm(-1) with increasing oxygen pressure, indicating a larger tensile stress in the films deposited at higher oxygen pressure. The X-ray photoelectron spectroscopy analysis suggests that the concentrations of both Fe(2+) ions and oxygen vacancies in the BiFeO(3) films increase with decreasing oxygen pressure. Moreover, the dielectric functions in the photon energy range of 0.47-6.5 eV have been extracted by fitting the transmittance spectra with the Tauc-Lorentz dispersion model. From the transmittance spectra, the fundamental absorption edge is observed to present a redshift trend with increasing the temperature from 8 to 300 K. Note that the optical band gap (E(g)) decreases with increasing the temperature due to the electron-phonon interactions associated with the interatomic distance in the BiFeO(3) films. However, the E(g) decreases from 2.88 to 2.78 eV with decreasing oxygen pressure at 8 K, which can be attributed to the increment of oxygen vacancies leading to the formation of some impurity states between the valence and conduction band. It can be concluded that the oxygen pressure during the film fabrication has the significant effects on microstructure, optical properties, and electronic band structure modification of the BiFeO(3) films.
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Affiliation(s)
- K Jiang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
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Tang JY, Zhang W, Sun J, Xu N, Ge C, Wu JD. Spectroscopic study on the enhanced excitation of an electron cyclotron resonance nitrogen plasma by pulsed laser ablation of an aluminum target. Appl Spectrosc 2008; 62:1256-1261. [PMID: 19007469 DOI: 10.1366/000370208786401671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The influence of pulsed laser ablation of an aluminum target on the nitrogen plasma produced by electron cyclotron resonance (ECR) microwave discharge has been studied by optical emission spectroscopy (OES) with time and space resolution. The continuous wave (CW) feature of the optical emissions from the ECR nitrogen plasma turns to vary with time and space due to pulsed laser ablation and the expansion of the ablation-induced aluminum plume in the nitrogen plasma. The optical emissions from the nitrogen plasma increase significantly and the emission intensity of nitrogen molecular ions is observed to be more than 20 times higher with the target being ablated in comparison to the case without target ablation. The comparison of the optical emissions from the nitrogen plasma with those from the aluminum plume indicates that the excitation enhancement of the nitrogen plasma occurs in the region where the aluminum plume is expanding, revealing that the expansion of the aluminum plume leads to the excitation enhancement of the nitrogen plasma. Relevant mechanisms responsible for the excitation enhancement of the nitrogen plasma through hybrid processes of ECR microwave discharge and pulsed laser ablation are also discussed.
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Affiliation(s)
- J Y Tang
- Department of Optical Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
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Abstract
Practical and cost-effective circuitry with high sensitivity has been developed to measure a small capacitance using current compensation method. The circuitry uses an electronic switch to periodically connect or separate the capacitor under test (C(x)) from a reference capacitor (C(r)). When C(x) is connected in parallel with C(r) the total capacitance becomes C(x)+C(r). On the other hand, as C(x) is separated from C(r), the total capacitance is only C(r). This periodic change of the capacitance generates a periodic square-wave output with an amplitude in proportion to the capacitance of C(x). A high sensitivity of DeltaV/DeltaC=202.2 mV/pF has been achieved, making the circuitry a powerful tool in measuring small capacitances. Three applications have been performed to present its capability: (a) displacement, (b) height of liquid, and (c) angle of tilt. The experimental results demonstrate the performance of the circuitry.
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Affiliation(s)
- D Y Lin
- Department of Electronic Engineering, National Changhua University of Education, Changhua 500, Taiwan, Republic of China.
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Abstract
Thirty-seven consecutive patients with cancer of the anterior two-thirds of the tongue without clinical neck lymph nodes or distant metastasis were treated with transoral carbon dioxide (CO2) laser microsurgery. During the operation, a monopolar coagulation-suction device was applied to achieve a clear surgical field. Under a surgical microscope, we repeatedly palpated the soft tissue to identify the tumour margins, in particular the deep margin, to maintain adequate safe margins in three dimensions. We resected the tumour by en bloc procedures rather than by vaporization or debulking. Of the 28 patients in the T1 and T2 groups, 26 patients did not receive postoperative radiotherapy. The local control rate calculated by the methods of Kaplan and Meier in all 37 patients at 5 years was 93.6%. No local recurrence occurred in the T1 or T2 cases. Nine patients suffered from neck recurrence and the neck control rate at 5 years was 74.6%. Eight of these nine patients were salvaged by surgery with adjuvant radiotherapy, and six of them finally achieved disease-free status. The 5-year disease-free survival rate for our series was 88%. Our surgical techniques using CO2 laser microsurgery are effective and advantageous methods for excision of oral tongue cancer, especially stage I and II lesions.
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Affiliation(s)
- C P Wang
- Department of Otolaryngology, Yuan-Shan Veterans Hospital, Taipei, Taiwan
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12
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Abstract
C3, designated as Per a 1.0103 according to WHO/IUIS nomenclature, encoding a novel American cockroach allergen of 395 aa (44.6 kDa), is the first complete cDNA clone with a translatable immunoreactive protein among the reported group 1 cockroach allergens. Its deduced amino acid sequence possesses a signal sequence, phosphorylation sites, mitochondrial energy transfer protein signatures, and four repeats each sharing striking similarity with the corresponding repeats of the other cockroach allergens. The latter similarity suggests that the group 1 cockroach allergens might have evolved from a primordial mitochondrial sequence by exon duplication.
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Affiliation(s)
- C Y Yang
- Institute of Medical Biology, National Chung Hsing University, Taichung, Taiwan
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13
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Wang ZG, Zhang H, Pu LQ, Du W, Li GD, Wu JD, Wang DJ, Sha RY. Can endothelial seeding enhance patency and inhibit neointimal hyperplasia? Experimental studies and clinical trial of endothelial seeded venous prostheses. INT ANGIOL 2000; 19:259-69. [PMID: 11201596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND Venous prostheses have poor long-term patency; to improve this situation, experimental studies have been carried out. METHODS Methods of endothelial cell harvesting, prosthetic seeding and implantation mainly in the inferior vena cava were studied in 127 dogs. Evaluations were conducted by angiography, gross appearance, light, scanning and transmission electron microscopic observations, histo-fluorescent staining, as well as radioimmunoassay. RESULTS It was found that at five to ten days following implantation, the prosthetic endothelialisation could be reliably achieved in the seeded group and a 100% patency of the seeded inferior vena caval prostheses was attained at 100 days. The thickness of the neointima in the seeded group at 10 and 100 days was 299 microm and 302 microm, respectively. The metabolite of PGI2 from extrinsic arachidonic acid, 6-keto PGF1a, produced by cells from seeded graft was significantly higher than that from spontaneously formed cells and the reverse found with thromboxane B2. A temporary (one week) distal (femoral) arteriovenous fistula enhanced graft patency. These results indicated that the early endothelialisation of grafts by seeding enhanced the patency and inhibited intimal hyperplasia of venous prostheses. The clinical outcome was impressively improved from our previous experience with ten of eleven venous grafts patent over a follow-up period of six to nine years. These might result from the realization of early endothelialisation and its cells derived from seeding being able to produce significantly more PGI2 and less thromboxane B2. CONCLUSIONS The endothelial cell seeding technique may bring us much closer to an ideal venous prosthesis.
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Affiliation(s)
- Z G Wang
- China Vascular Institute, First Affiliated Hospital, Zhejian University School of Medicine, Hangzhou
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14
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Spratt TE, Wu JD, Levy DE, Kanugula S, Pegg AE. Reaction and binding of oligodeoxynucleotides containing analogues of O6-methylguanine with wild-type and mutant human O6-alkylguanine-DNA alkyltransferase. Biochemistry 1999; 38:6801-6. [PMID: 10346901 DOI: 10.1021/bi982908w] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
O6-Alkylguanine-DNA alkyltransferase (AGT) repairs DNA by transferring the methyl group from the 6-position of guanine to a cysteine residue on the protein. We previously found that the Escherichia coli Ada protein makes critical interactions with O6-methylguanine (O6mG) at the N1- and O6-positions. Human AGT has a different specificity than the bacterial protein. We reacted hAGT with double-stranded pentadecadeoxynucleotides containing analogues of O6mG. The second-order rate constants were in the following order (x10(-)5 M-1 s-1): O6mG (1.4), O6-methylhypoxanthine (1.6) > Se6-methyl-6-selenoguanine (0.1) > S6-methyl-6-thioguanine (S6mG) (0.02) >> S6-methyl-6-thiohypoxanthine (S6mH), O6-methyl-1-deazaguanine (O6m1DG), O6-methyl-3-deazaguanine (O6m3DG), and O6-methyl-7-deazaguanine (O6m7DG) (all <0.0001). Electrophoretic mobility shift assays were carried out to determine the binding affinity to hAGT. Oligodeoxynucleotides containing O6mG, S6mG and O6m3DG bound to AGT in the presence of competitor DNA with Kd values from 5 to 20 microM, while those containing G, S6mH, O6m1DG, and O6m7DG did not (Kd > 200 microM). These results indicate that the 1-, N2-, and 7- positions of O6mG are critical in binding to hAGT, while the 3- and O6-positions are involved in methyl transfer. These results suggest that the active site of ada AGT is more flexible than hAGT and may be the reason ada AGT reacts with O4mT faster than hAGT.
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Affiliation(s)
- T E Spratt
- American Health Foundation, Division of Pathology and Toxicology, Valhalla, New York 10595, USA
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15
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Sheu SY, Lin CY, Wu JD, Chiang HC. Inhibition of xanthine oxidase by benzothiazinone analogues. Anticancer Res 1999; 19:119-23. [PMID: 10226532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Fourteen synthetic benzothiazinone analogues were tested for their inhibitory effects on xanthine oxidase. The enzyme, xanthine oxidase (XO) catalyses the oxidation of hypoxanthine to xanthine and of xanthine to uric acid, which has a lambda max of 295 nm, forming the basis for a spectrophotometric assay for the activity of xanthine oxidase. The results showed that 2-amino-4H-1,3-benzothiazine-4-one (1), 2-guanidino-4H-1,3-benzothiazin-4-one (2) and rhodanine (3) display inhibitory effects on xanthine oxidase with an order of activity of IC50 = 5.54, 5.60 and 121.40 microM respectively. The apparent inhibition constants (Ki) were 5.12, 19.47 and 206.23 microM, and induced non-competitive, mixed type (non-competitive-uncompetitive) and mixed type (non-competitive-uncompetitive) inhibitions respectively with respect to the substrate xanthine.
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Affiliation(s)
- S Y Sheu
- School of Pharmacy, Taipei Medical College, Taiwan, ROC
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16
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Wu JD, Milton DK, Hammond SK, Spear RC. Hierarchical cluster analysis applied to workers' exposures in fiberglass insulation manufacturing. Ann Occup Hyg 1999; 43:43-55. [PMID: 10028893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
The objectives of this study were to explore the application of cluster analysis to the characterization of multiple exposures in industrial hygiene practice and to compare exposure groupings based on the result from cluster analysis with that based on non-measurement-based approaches commonly used in epidemiology. Cluster analysis was performed for 37 workers simultaneously exposed to three agents (endotoxin, phenolic compounds and formaldehyde) in fiberglass insulation manufacturing. Different clustering algorithms, including complete-linkage (or farthest-neighbor), single-linkage (or nearest-neighbor), group-average and model-based clustering approaches, were used to construct the tree structures from which clusters can be formed. Differences were observed between the exposure clusters constructed by these different clustering algorithms. When contrasting the exposure classification based on tree structures with that based on non-measurement-based information, the results indicate that the exposure clusters identified from the tree structures had little in common with the classification results from either the traditional exposure zone or the work group classification approach. In terms of the defining homogeneous exposure groups or from the standpoint of health risk, some toxicological normalization in the components of the exposure vector appears to be required in order to form meaningful exposure groupings from cluster analysis. Finally, it remains important to see if the lack of correspondence between exposure groups based on epidemiological classification and measurement data is a peculiarity of the data or a more general problem in multivariate exposure analysis.
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Affiliation(s)
- J D Wu
- Center for Occupational and Environmental Health, School of Public Health, University of California, Berkeley 94720, USA.
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Wu JD, Hsueh HC, Huang WT, Liu HS, Leung HW, Ho YR, Lin MT, Lai MD. The inducible lactose operator-repressor system is functional in the whole animal. DNA Cell Biol 1997; 16:17-22. [PMID: 9022041 DOI: 10.1089/dna.1997.16.17] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Mouse liver cell lines that bear a stably integrated lactose operon repressor (lacI) gene and a Ha-ras gene linked to a lactose operator-containing SV40 early promoter were generated. When grown in medium containing more than 0.1 mM isopropyl beta-D-thiogalactoside (IPTG), the Ha-ras gene was induced up to 20-fold. Maximum induction of Ha-ras gene expression occurred after 12 h of exposure. The tumorigenicity of these cell lines in syngeneic mice was enhanced when the mice were maintained on drinking water containing 12.5 mM IPTG. Ha-ras gene expression in tumors was strongly induced in the presence of IPTG in vivo. Induction of Ha-ras gene expression in mice was consistently observed after 48 hr of exposure to drinking water containing IPTG. This system provides an approach for studying the function of oncogene in vivo as well as other genes of interest.
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Affiliation(s)
- J D Wu
- Department of Biochemistry, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
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18
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Cheng YT, Li YL, Wu JD, Long SB, Tzai TS, Tzeng CC, Lai MD. Overexpression of MDM-2 mRNA and mutation of the p53 tumor suppressor gene in bladder carcinoma cell lines. Mol Carcinog 1995; 13:173-81. [PMID: 7619220 DOI: 10.1002/mc.2940130307] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To investigate the importance of oncogenes and tumor suppressor genes in bladder carcinogenesis, we determined the status of the expression of the MDM-2 and p53 genes and genetic alterations in the p53 gene in five bladder carcinoma cell lines and one kidney urothelial carcinoma cell line. Overexpression of MDM-2 mRNA was observed in three bladder carcinoma cell lines, J82, SCaBER, and BFTC-905. Amplification of the MDM-2 gene was not detected in any of the six cell lines by southern analysis. The deletion in the p53 gene was observed in J82, and point mutation was detected in J82 and BFTC-909, the kidney urothelial carcinoma cell line. In contrast, no mutations were found in codons 12, 13, and 61 in the Ha-ras and Ki-ras genes in these six cell lines. These results indicate that alterations in the p53-regulated pathway are important in bladder carcinogenesis.
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Affiliation(s)
- Y T Cheng
- Department of Biochemistry, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
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19
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Ren ZM, Du YC, Qiu Y, Wu JD, Ying ZF, Xiong XX, Li FM. Carbon nitride films synthesized by combined ion-beam and laser-ablation processing. Phys Rev B Condens Matter 1995; 51:5274-5277. [PMID: 9979406 DOI: 10.1103/physrevb.51.5274] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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20
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Wang ZG, Wang SH, Wu JD. [Treatment of Budd-Chiari syndrome with balloon dilatation and intraluminal stent]. Zhonghua Yi Xue Za Zhi 1995; 75:97-9, 127. [PMID: 7767778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We treated 33 cases of Budd-Chiari syndrome caused by localized occlusive lesions of the inferior vena cava (IVC) with balloon dilatation and stent deployment. Of the 33, 21 were male and 12 female. Complete "membranous" occlusion was found in 18, incomplete "membrane" in 6, and localized stenosis in 9. Seven cases recurred after transcardiac and membranotomy or cavoatial shunt or mesoatial shunt. Pure stent deployment was carried out in 24 cases, combined transcardiac and transfemoral approaches were used in 6, stent was placed during radical correction of IVC lesions in 3. Unrelieved intractable ascites were 5 cases because of hepatic venous occlusion or secondary cirrhosis, 3 of them were resolved by mesocaval anastomosis. The IVC pressures before and after stenting were 2.70 +/- 0.69kPa (1kPa = 0.98cmH2O) and 1.55 +/- 0.50kPa (P < 0.01) respectively. All but one (waiting for possible messocaval shunt) had excellent effect 6-23 months following the above mentioned therapy. We conclude that dilation and stenting plus necessary or additional surgery bring about a prosperous means for treating Budd-Chiari syndrome with localized lesions.
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Affiliation(s)
- Z G Wang
- Vascular Institute, Post & Telecommunication Hospital, Beijing
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21
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Wang ZG, Wang SH, Wu JD. [Management of high risk Budd-Chiari syndrome with mesojugular shunt: report of 16 cases]. Zhonghua Wai Ke Za Zhi 1994; 32:611-4. [PMID: 7750421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Standard procedures to treat Budd-Chiari syndrome caused by localized occlusions of the inferior vena cava and/or hepatic venous occlusion have been established. However, for those caused by long segmental occlusion or constriction accompanying with large amount of ascites, malnutrition, hypoalbumineamia, even pleural effusion, and breathlessness even orthopnea, no proper approaches are available. Hereby we report a new method of mesojugular shunt. Sixteen patients have been treated resulting in excellent result in 53% of patients and fair in 20%. The operative mortality was 13%. We consider mesojugular shunt is a proper means for relieving high risk patients with Budd-Chiari syndrome.
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Affiliation(s)
- Z G Wang
- Vascular Institute, Post and Telecom Hospital, Beijing
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22
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Chang H, Wu JD, Cheng KK, Tseng HH. Epstein-Barr virus-associated lymphoproliferative disorders in oral cavity after heart transplantation: report of a case. J Formos Med Assoc 1994; 93:332-6. [PMID: 7914777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Clinical manifestations of Epstein-Barr virus associated with post-heart transplant lymphoproliferative disorders (PTLD) are variable. Over one-half of the PTLD express extranodal presentations, of which gastrointestinal symptoms are the most common. Development of oral ulcers is an extremely rare initial manifestation with only three such cases having been reported. A case of oropharyngeal presentation of PTLD is described here. The clinical presentations and pathologic spectrums of PTLD are discussed. Posttransplant lymphoproliferative disorders are considered to be iatrogenic and life-threatening and are associated with immunosuppressive agents and Epstein-Barr virus infection. Early diagnosis and appropriate management could prevent the fatal progression of such disorders. The need to analyse tumor clonality along with observation of clinical presentations and microscopic pathology in order to diagnose PTLD is discussed.
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Affiliation(s)
- H Chang
- Department of Pathology, Veterans General Hospital-Kaohsiung, Taiwan, R.O.C
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Wu JD, Tseng HH. The expression of proliferating cell nuclear antigen in hepatocellular carcinoma. Zhonghua Yi Xue Za Zhi (Taipei) 1994; 53:198-203. [PMID: 7911731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Proliferating cell nuclear antigen (PCNA), also known as cyclin, is a cell cycle-related nuclear protein which accumulates in late G1 and S phases of proliferating cells. Previous researches have demonstrated it is a potentially useful tool for the study of tumor proliferative activity and have correlated it with tumor grade. METHODS In this study, PCNA was identified by utilizing streptavidin-biotin immunoperoxidase technique on formalin-fixed, paraffin-embedded tissue sections of 32 hepatocellular carcinomas that were obtained from resected surgical specimens. RESULTS The PCNA staining was entirely confined to the nucleus and showed gradation of intensity. The staining rates in tumor cells ranged from 0% to 99%. The mean (+/- S.D.) PCNA staining rates of 5 in grade I, 20 in grade II, and 7 in grade III hepatocellular carcinomas were 0.38 +/- 0.15%, 19.39 +/- 18.86% and 49.57 +/- 29.98%, respectively, and showed statistically significant difference (P < 0.01) between each other. There was no statistical difference in the mean PCNA staining rate of various histological types among hepatocellular carcinoma (P > 0.05). In 12 of 32 hepatocellular carcinomas, each PCNA staining of non-neoplastic hepatic tissue adjacent to the tumor was also evaluated and their mean PCNA rate (0.59 +/- 0.58%) revealed no significant difference (P > 0.05) from grade I hepatocellular carcinoma. CONCLUSIONS The hepatocellular carcinoma's mean proliferating cell nuclear antigen staining rates were correlated with its first three histological grades but revealed no statistical difference among its histological types. The mean proliferating cell nuclear antigen staining did not differentiate non-neoplastic hepatic diseases that were adjacent to hepatocellular carcinoma, including chronic active hepatitis, cirrhosis of liver, reactive hepatitis, schistosomiasis and nuclear dysplasia, from grade I hepatocellular carcinoma.
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Affiliation(s)
- J D Wu
- Department of Pathology, Veterans General Hospital-Kaohsiung, Taiwan, R.O.C
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Wang ZG, Wu JD, Du W. [Experimental study and clinical application of endothelium seeded vena caval prostheses]. Zhonghua Wai Ke Za Zhi 1994; 32:133-6. [PMID: 7842898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
One hundred and eleven mongrel dogs were used for this study. Endothelial cells were harvested from jugular vein or omentum with methods of collagenase digestion and density gradient separation. Animal model of prosthetic interposition into the inferior vena cava with or without distal arteriovenous fistula was established. The complete endothelialization was established 5 to 10 days following a high density seeding. The neointimal hyperplasia was inhibited. A 100-day 100% patency of prosthesis was reached. The seeded endothelium secreted higher level of PGI2 than normal control and lower level of TXB2, hence the positive effect of distal AVF functioning for a week on the patency was demonstrated. This method used in 10 cases with Budd-Chiari syndrome resulting in good outcome after 3 to 5 years follow-up. We conclude that the endothelial seeding technique has a promising future using in the venous circuit.
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Affiliation(s)
- Z G Wang
- Post and Telecom Hospital, Beijing
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25
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Wu JD. [Research of women's periodontal conditions after using sex hormonal contraceptives]. Zhonghua Kou Qiang Yi Xue Za Zhi 1992; 27:151-3. [PMID: 1292900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Yu CC, Huang JK, Tzeng WS, Wu JD, Lee YH, Jiaan BP. Simultaneous bilateral adrenal metastases from renal cell carcinoma. Surgical implications and review of the literature. Eur Urol 1992; 22:335-8. [PMID: 1490512 DOI: 10.1159/000474782] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We report a case of left-side renal cell carcinoma with contemporary bilateral adrenal involvement discovered preoperatively with computerized tomography and other imaging techniques. Surgical treatment consisted of radical nephrectomy with a nearly total contralateral adrenalectomy and the unroofing of a lower pole renal cyst. Postoperative cortisone acetate replacement was instituted. The surgical implications of renal cell carcinoma with metastasis are also discussed.
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Affiliation(s)
- C C Yu
- Department of Surgery, Veterans General Hospital-Kaohsiung, Taiwan, ROC
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Banning JW, Abramson HN, Wormser HC, Wu JD, Corbett TH. Relative cardiotoxicity and cytotoxicity of anthraquinonyl glucosaminosides. Cancer Chemother Pharmacol 1987; 19:207-12. [PMID: 3472676 DOI: 10.1007/bf00252974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The cardiotoxicity and cytotoxicity for tumor cells of four new synthetic anthraquinonyl glucosaminosides were compared in vitro. The nonhydroxylated anthraquinone was not cardiotoxic, and its cytotoxic activity was the weakest of the compounds in the series. Increasing the number of hydroxyl groups on the anthraquinone moiety increased the inhibition of growth of L-1210 leukemia cells and pancreatic or colonic adenocarcinomas in a soft agar colony formation assay. However, cardiotoxicity was also increased in proportion to the number of hydroxyl groups present. The adenocarcinomas were slightly more sensitive than the leukemias to the inhibitory action of the dihydroxylated anthraquinonyl glucosaminosides on cell growth.
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Abramson HN, Banning JW, Nachtman JP, Roginski ET, Sardessai M, Wormser HC, Wu JD, Nagia Z, Schroeder RR, Bernardo MM. Synthesis of anthraquinonyl glucosaminosides and studies on the influence of aglycone hydroxyl substitution on superoxide generation, DNA binding, and antimicrobial properties. J Med Chem 1986; 29:1709-14. [PMID: 3018245 DOI: 10.1021/jm00159a024] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A series of anthraquinonyl glucosaminosides (10a-e) were synthesized by Koenigs-Knorr glycosidation of the corresponding aglycones (11a-e) with bromo sugar 12 followed by saponification. These glycosides were intended to serve as models to study the role played by the hydroxyl substituents on the aglycone portion of the antitumor anthracycline antibiotics. Superoxide generation as measured in rat heart sarcosomes was found to increase with the addition of successive hydroxyl groups to the anthraquinone nucleus. The 1,8-dihydroxy pattern was determined to generate significantly less superoxide than the 1,4-dihydroxy pattern. Hydroxyl substitution was also observed to stabilize the complex formed between the anthraquinones and DNA and was required for antibacterial activity against a number of Gram-positive organisms.
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Wu JD, Bailey JM. Lipid metabolism in cultured cells: studies on lipoprotein-catalyzed reverse cholesterol transport in normal and homozygous familial hypercholesterolemic skin fibroblasts. Arch Biochem Biophys 1980; 202:467-73. [PMID: 7458331 DOI: 10.1016/0003-9861(80)90451-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Wu JD, Butler J, Bailey JM. Lipid metabolism in cultured cells. XVIII. Comparative uptake of low density and high density lipoproteins by normal, hypercholesterolemic and tumor virus-transformed human fibroblasts. J Lipid Res 1979; 20:472-80. [PMID: 222855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Serum lipoproteins control cell cholesterol content by regulating its uptake, biosynthesis, and excretion. Monolayers of cultured fibroblasts were used to study interactions with human high density (HDL) and low density (LDL) lipoproteins doubly labeled with [(3)H]cholesterol and (125)I in the apoprotein moiety. In the binding assay for LDL, the absence of specific LDL receptors in type II hypercholesterolemic fibroblasts was confirmed, whereas monolayers of virus-transformed human lung fibroblasts (VA-4) exhibited LDL binding characteristics essentially the same as normal lung fibroblasts. In the studies of HDL binding, specific HDL binding sites were demonstrated in normal and virus-transformed fibroblasts. In addition, type II hypercholesterolemic cells, despite the loss of LDL receptors, retained normal HDL binding sites. No significant competition was displayed between the two lipoprotein classes for their respective binding sites over a 5-fold concentration range. In VA-4 cells, the amount of lipoprotein required to saturate half the receptor sites was 3.5 micro g/ml (9 x 10(-9) M) for LDL and 9.1 micro g/ml (9 x 10(-8) M) for HDL. Pronase treatment reduced LDL binding by more than half but had no effect on HDL binding. Chloroquine, a lysomal enzyme inhibitor, stimulated net LDL uptake 3.5-fold by increasing internalized LDL but had essentially no effect on HDL uptake. Further experiments were conducted using doubly labeled lipoproteins to characterize the interaction of LDL and HDL with cells. While the cholesterol and protein moieties of LDL were incorporated into cells at similar rates, the uptake of the cholesterol moiety of HDL was 5 to 10 times more rapid than that of the protein component. Furthermore, the apoprotein component of LDL is extensively degraded following exposure, whereas the apoprotein moiety of HDL retains its macromolecular chromatographic characteristics. These results indicate that HDL and LDL bind to cultured cells at separate sites and that further processing of the two lipoprotein classes appears to take place by fundamentally different mechanisms.-Wu, J-D., J. Butler, and J. M. Bailey. Lipid metabolism in cultured cells XVIII. Comparative uptake of low density and high density lipoproteins by normal, hypercholesterolemic, and tumor virus-transformed human fibroblasts.
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Bailey JM, Wu JD. Lipid metabolism in cultured cells. XVI. Lipoprotein binding and HMG CoA reductase levels in normal and tumor virus-transformed human fibroblasts. J Lipid Res 1977; 18:512-6. [PMID: 197186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The loss in feedback control of cholesterol biosynthesis in tumor cells was examined in tissue culture. Human fibroblasts from normal subjects, SV40 tumor virus-transformed cell lines, and homozygous familial hypercholesterolemic cells as reference, were grown in tissue culture. Experiments were conducted to relate the regulatory enzyme for cholesterol biosynthesis, HMG CoA reductase, and the membrane-located binding receptors for low density lipoproteins (LDL) that mediate feedback control in normal cells. Monolayers of virus-transformed tumor cells exhibited specific (125)I-labeled LDL binding of 152 +/- 21 ng/mg cell protein, which was essentially the same as that of normal fibroblasts (135 +/- 20 ng/mg). Binding of LDL by familial hypercholesterolemic cells used as controls was only 8 +/- 3 ng/mg under the same test conditions. Basal levels of HMG CoA reductase in tumor cells of 45.2 +/- 6.5 units/mg cell protein were about twice those of normal cells. However, in contrast to the lack of feedback control of this enzyme observed with tumors in vivo, in both the normal and the transformed cells in vitro, activity of the enzyme decreased about fourfold when serum lipids were added. These findings demonstrate that tumor cells growing in vitro contain a normal complement of the membrane-located binding receptors for low density lipoproteins and, although the basal levels are higher than normal, an effective feedback regulation of the enzyme HMG CoA reductase is retained.
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