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Marquis A, Zhuang J, Marra G, Zhao X, Calleris G, Kan Y, Beltrami M, Huang H, Oderda M, Zhang Q, Faletti R, Wang W, Molinaro L, Bergamasco L, Guo H, Gontero P. Outcomes and predictors of pain in transperineal free-hand mpMRI fusion-targeted biopsies under local anesthesia: A multicenter study of 1,008 patients. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)35389-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Marra G, Zhuang J, Beltrami M, Marquis A, Zhao X, Calleris G, Kan Y, Oderda G, Huang H, Faletti R, Zhang Q, Molinaro L, Wang W, Bergamasco L, Guo H, Gontero P. Outcomes and predictors of pain in men undergoing transperineal free-hand mpMRI fusion-targeted biopsies under local anesthesia: A multicenter prospective study of 1008 patients. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34169-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Calleris G, Marra G, Zhuang J, Beltrami M, Zhao X, Marquis A, Kan Y, Oderda M, Greco A, Zitella A, Bisconti A, Huang H, Faletti R, Zhang Q, Molinaro L, Falcone M, Cappuccelli S, Wang W, Barale M, Giordano A, Agnello M, Guo H, Gontero P. Transperineal free-hand mpMRI targeted prostate biopsies under local anesthesia: A preliminary analysis of learning curves. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34179-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Marra G, Zhuang J, Beltrami M, Calleris G, Zhao X, Marquis A, Kan Y, Oderda M, Huang H, Faletti R, Zhang Q, Molinaro L, Tappero S, D’Agate D, Wang W, Bergamasco L, Guo H, Gontero P. Do we need addition of systematic cores when performing transperineal mpMRI targeted biopsy under local anesthesia? Results of a multicenter prospective study of 1,014 cases. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32666-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Kan Y, Zhang Q, Zhang S, Guo H. Specific gene set scores in prognostic prediction of muscle invasive bladder cancer. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33141-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Marra G, Zhuang J, Beltrami M, Marquis A, Zhao X, Calleris G, Kan Y, Oderda M, Huang H, Faletti R, Zhang Q, Molinaro L, Wang W, Bergamasco L, Guo H, Gontero P. Pain in men undergoing transperineal free-hand mpMRI fusion-targeted biopsies under local anesthesia: Outcomes and predictors from a multicenter study of 1008 patients. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34176-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Marra G, Zhuang J, Beltrami M, Calleris G, Zhao X, Marquis A, Kan Y, Oderda M, Huang H, Faletti R, Zhang Q, Molinaro L, Wang W, Bergamasco L, Tappero S, D’Agate D, Guo H, Gontero P. Transperineal free-hand mpMRI fusion targeted biopsies under local anesthesia for prostate cancer diagnosis: A multicenter prospective study of 1,014 cases. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34177-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Sun Y, Gao L, Kan Y, Shi BX. The Perceived Stress Scale-10 (PSS-10) is reliable and has construct validity in Chinese patients with systemic lupus erythematosus. Lupus 2018; 28:149-155. [PMID: 30518288 DOI: 10.1177/0961203318815595] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Systemic lupus erythematosus is a chronic, progressive, autoimmune disease that causes significant stress on patients. There is no specific instrument for assessing stress in Chinese systemic lupus erythematosus patients. The objective of this study was to test the reliability and validity of the 10-item Perceived Stress Scale in Chinese systemic lupus erythematosus patients. Validity evaluation included structural and construct validity (convergent and discriminant validity). Structural validity was assessed by exploratory factor analysis. Convergent validity was assessed by correlating the total score of the 10-item Perceived Stress Scale with the Patient Health Questionnaire-9, Self-Efficacy for Managing Chronic Disease 6-Item Scale, the Simplified Coping Style Questionnaire, and the Systemic Lupus Erythematosus Disease Activity Index. Discriminant validity was determined by the statistically significant differences in perceived stress scores among patients with different education levels and disease activity. Reliability was assessed by internal consistency and test-retest reliability. The test-retest reliability was measured at 1-week intervals. Exploratory factor analysis extracted two dimensions that explained 66.45% of the variation. Moderate-to-strong correlations were also found between the 10-item Perceived Stress Scale and the Patient Health Questionnaire-9, Self-Efficacy for Managing Chronic Disease 6-Item Scale, the Simplified Coping Style Questionnaire, and Systemic Lupus Erythematosus Disease Activity Index. Excellent test-retest reliability (intraclass correlation coefficient = 0.954) and internal consistency (Cronbach's alpha = 0.810) were demonstrated. In conclusion, the 10-item Perceived Stress Scale can be used to measure stress among Chinese systemic lupus erythematosus patients and serve as a basis for further research.
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Affiliation(s)
- Y Sun
- School of Nursing, Tianjin Medical University, Tianjin City, People's Republic of China
| | - L Gao
- Department of Nursing, Huizhou First People's Hospital, Huizhou City, People's Republic of China
| | - Y Kan
- Department of Rheumatology and Immunology, Tianjin First Center Hospital, Tianjin City, People's Republic of China
| | - B-X Shi
- School of Nursing, Tianjin Medical University, Tianjin City, People's Republic of China
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Shi H, Kan Y, Yao L, Leng C, Tang Q, Ji J, Sun S. Identification of Natural Infections in Sheep/Goats with HoBi-like Pestiviruses in China. Transbound Emerg Dis 2016; 63:480-4. [PMID: 27478131 DOI: 10.1111/tbed.12551] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Indexed: 01/03/2023]
Abstract
The natural infections of HoBi-like pestiviruses in cattle have been reported in South America, Europe and Asia. In China, although the detections of HoBi-like pestivirus have been reported, the epidemiological investigation was limited. From January 2014 to October 2015, several flocks of sheep/goats in Henan province in central China suffered respiratory diseases which were recovered slowly after antibiotics treatment. To test whether it is the HoBi-like pestivirus caused this symptom, 49 serum samples and 22 nasal swabs were then collected for analysis by serology and RT-PCR. Serological result revealed that prevalence of pestivirus in small ruminants was 12.2% (6/49) in central China. Sequence analysis of partial 5'-UTR nucleotides of pestivirus-positive samples suggested that HoBi-like pestivirus might have circulated in sheep/goats of China for a period and have evolved into new genotype clusters. It is apparent that the study provides the molecular evidence of natural infections in goat/sheep species with HoBi-like pestiviruses in China.
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Affiliation(s)
- H Shi
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - Y Kan
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - L Yao
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - C Leng
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - Q Tang
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - J Ji
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - S Sun
- Liao Ning Center for Animal Disease Control and Prevention, Shenyang, China
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Affiliation(s)
- S.R. Markar
- Department of General Surgery, Cambridge University Hospitals NHS Foundation Trust
| | - A. Karthikesalingam
- Department of General Surgery, Cambridge University Hospitals NHS Foundation Trust
| | - A. Falzon
- Department of General Surgery, Cambridge University Hospitals NHS Foundation Trust
| | - Y. Kan
- Department of General Surgery, Cambridge University Hospitals NHS Foundation Trust
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Yuan LL, Kan Y, Ma DQ, Yang JG. Combined application of ultrasound and SPECT/CT has incremental value in detecting parathyroid tissue in SHPT patients. Diagn Interv Imaging 2015; 97:219-25. [PMID: 26432401 DOI: 10.1016/j.diii.2015.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 06/17/2015] [Revised: 08/02/2015] [Accepted: 08/26/2015] [Indexed: 11/15/2022]
Abstract
PURPOSE The goal of this study is to investigate whether combined application of ultrasound and 99mTc-sestamibi SPECT/CT had the incremental value in accurately detecting parathyroid tissue in patients with SHPT over either method alone. PATIENTS AND METHODS Sixty patients with SHPT on hemodialysis were evaluated preoperatively with parathyroid 99mTc-sestamibi SPECT/CT scintigraphy and ultrasound prior to parathyroidectomy. The sensitivity, specificity and accuracy of 99mTc-sestamibi SPECT/CT scintigraphy, ultrasound and combined application were determined respectively. RESULTS The sensitivity, specificity and accuracy of ultrasound were 81% (155/192), 47% (17/36) and 82% (172/228), respectively. The sensitivity, specificity and accuracy of 99mTc-sestamibi SPECT/CT were 85% (163/192), 58% (21/36) and 89% (184/228) respectively. The accuracy of 99mTc-sestamibi SPECT/CT in the diagnosis of parathyroid tissue in patients with SHPT is significantly higher than that of ultrasound. The sensitivity, specificity and accuracy of combined application of ultrasound and 99mTc-sestamibi SPECT/CT were 93% (178/192), 61% (22/36) and 97% (200/228). The sensitivity, specificity and accuracy of combined application of ultrasound and 99mTc-sestamibi SPECT/CT were higher than those of either ultrasound or 99mTc-sestamibi SPECT/CT. CONCLUSIONS The combined application of ultrasound and 99mTc-sestamibi SPECT/CT had incremental value in accurately detecting parathyroid tissue in patients with SHPT over either method alone.
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Affiliation(s)
- L L Yuan
- Capital Medical University, Beijing Friendship Hospital, Department of Nuclear Medicine, 95, Yong An Road, Xi Cheng district, 100050 Beijing, People's Republic of China
| | - Y Kan
- Capital Medical University, Beijing Friendship Hospital, Department of Nuclear Medicine, 95, Yong An Road, Xi Cheng district, 100050 Beijing, People's Republic of China
| | - D Q Ma
- Capital Medical University, Beijing Friendship Hospital, Radiology Department, 95, Yong An Road, Xi Cheng district, 100050 Beijing, People's Republic of China.
| | - J G Yang
- Capital Medical University, Beijing Friendship Hospital, Department of Nuclear Medicine, 95, Yong An Road, Xi Cheng district, 100050 Beijing, People's Republic of China.
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Abstract
Cedars (Cedrus deodara (Roxb.) G. Don) are well known as evergreen ornamental trees widely used in horticulture in temperate climates. In March 2013, dieback symptoms were found on cedar trees in different locations (including the campus of Nanyang Normal University) in Nanyang (33°01' N, 112°29' E), a southwestern city of Henan Province, China. Characteristic symptoms included needle discoloration and defoliation, canker formation and gummosis on trunks and branches, browning and tissue necrosis under the bark as well as dieback of branches/trunks. Of 873 cedar trees investigated, 139 (16%) were symptomatic. A total of 21 Diplodia sp. isolates were obtained from 102 tissue pieces randomly sampled from the lesion margins of 31 affected trees with a conventional method for isolation of culturable fungal species from plant tissues. Monohyphal cultures were isolated from actively growing edges of colonies to purify the isolates. The purified isolates were grown on 2% water agar with sterilized stems of Foeniculum vulgare to induce their colonies to form pycnidia (4). Unmatured conidia were hyaline, aseptate, and turned light to dark brown with maturity. Mature conidia were aseptate (rarely uniseptate), ovoid with truncated or rounded base and obtuse apex, externally smooth, roughened on the inner surface, and 8 to 11 × 23 to 26 μm (n = 50). These morphological characteristics of the isolates agreed with those of Diplodia seriata (the anamorph of Botryosphaeria obtusa) (5). The rDNA-ITS sequences of two representative isolates (xs-01 and xs-06) were amplified with primers ITS1 and ITS4. PCR products were purified and ligated with PMD-19T vector for sequencing. The rDNA-ITS sequences were submitted to GenBank with accession nos. KJ463386 and KJ549774 for isolates xs-01 and xs-06, respectively, showing 100% identity with multiple isolates of D. seriata (HQ660463, KC461297, and KF535906). Koch's postulates were fulfilled in greenhouse tests on 2-year-old cedar plantlets inoculated by the two isolates. Ten plantlets were used for the inoculation tests for each of the isolates, and their trunks were wounded to a 2 mm depth with a sterilized cork borer (3 mm diameter). The wounds were inoculated by mycelial plugs cut from 7-day-old colonies grown on potato dextrose agar (PDA) plates and wrapped with Parafilm, and those inoculated with pure PDA plugs served as control. Inoculated plantlets were incubated in a greenhouse with alternating cycles of 14 h fluorescent light/10 h darkness under moist conditions for 30 to 60 days at 28°C. Nine of 20 inoculated plantlets developed needle discoloration and shoot blight symptoms similar to those observed on naturally infected cedar trees. The control plantlets remained symptomless during the incubation period. D. seriata cultures were constantly recovered from each diseased plantlet, indicating that the isolated D. seriata isolates were responsible for the disease. D. seriata has been reported as a phytopathogen causing dieback diseases worldwide on multiple woody plant species such as olive (4), mulberry (1), Pinus spp., and Picea glauca (2,3). To our knowledge, this is the first report of D. seriata causing dieback disease on cedars in China. References: (1) M. Arzanlou et al. Arch. Phytopathol. Plant Protect. 46:682, 2013. (2) T. Burgess et al. Appl. Environ. Microbiol. 67:354, 2001. (3) G. Hausner et al. Can. J. Plant Pathol. 21:256, 1999. (4) J. Kaliterna et al. Plant Dis. 96:290, 2012. (5) A. J. L. Phillips et al. Fungal Divers. 25:141, 2007.
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Affiliation(s)
- Z J Jiao
- College of Agriculture, Guangxi University, 530004 Nanning, China, and Nanyang Normal University, 473061 Nanyang, China
| | - Y C Kan
- College of Agriculture, Guangxi University, 530004 Nanning, China, and Nanyang Normal University, 473061 Nanyang, China
| | - S L Huang
- Nanyang Normal University, 473061 Nanyang, China
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Jin H, Yuan L, Li C, Kan Y, Hao R, Yang J. Diagnostic performance of FDG PET or PET/CT in prosthetic infection after arthroplasty: a meta-analysis. Q J Nucl Med Mol Imaging 2014; 58:85-93. [PMID: 24469570] [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: 06/03/2023]
Abstract
AIM The purpose of this study was to systematically review and perform a meta-analysis of published data regarding the diagnostic performance of positron emission tomography (PET) or PET/computed tomography (PET/CT) in prosthetic infection after arthroplasty. METHODS A comprehensive computer literature search of studies published through May 31, 2012 regarding PET or PET/CT in patients suspicious of prosthetic infection was performed in PubMed/MEDLINE, Embase and Scopus databases. Pooled sensitivity and specificity of PET or PET/CT in patients suspicious of prosthetic infection on a per prosthesis-based analysis were calculated. The area under the receiver-operating characteristic (ROC) curve was calculated to measure the accuracy of PET or PET/CT in patients with suspicious of prosthetic infection. RESULTS Fourteen studies comprising 838 prosthesis with suspicious of prosthetic infection after arthroplasty were included in this meta-analysis. The pooled sensitivity of PET or PET/CT in detecting prosthetic infection was 86% (95% confidence interval [CI] 82-90%) on a per prosthesis-based analysis. The pooled specificity of PET or PET/CT in detecting prosthetic infection was 86% (95% CI 83-89%) on a per prosthesis-based analysis. The area under the ROC curve was 0.93 on a per prosthesis-based analysis. CONCLUSION In patients suspicious of prosthetic infection, FDG PET or PET/CT demonstrated high sensitivity and specificity. FDG PET or PET/CT are accurate methods in this setting. Nevertheless, possible sources of false positive results and influcing factors should kept in mind.
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Affiliation(s)
- H Jin
- Nuclear Medicine Department Beijing Friendship Hospital of Capital Medical University Beijing, China -
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Gurbuz E, Balevi T, Kurtoglu V, Coskun B, Oznurlu Y, Kan Y, Kartal M. Effects of Echinacea extract on the performance, antibody titres, and intestinal histology of layer chicks. Br Poult Sci 2011; 51:805-10. [PMID: 21161788 DOI: 10.1080/00071668.2010.528753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
1. This research was conducted to determine the effect of diet supplementation with Echinacea extract (cichoric acid) on the growth performance, antibody titres and intestinal tissue histology of layer chicks. 2. White, 1-d-old, Hy-Line hybrid chicks (n = 540) were divided into three treatments, each consisting of 6 groups of 30 chicks (n = 180): (1) control; (2) 2·5 mg/kg cichoric-acid-fed; and (3) 5 mg/kg cichoric-acid-fed. The trial lasted 60 d. 3. While the growth performance of the chicks was depressed between d 1 and 45, it was found to improve between d 45 and 60. 4. Feed consumption was lower in both of the cichoric-acid-fed groups than in the control group between d 1-15 and 15-30, but was higher between d 30 and 45. Overall, mean feed consumption did not differ between the control and cichoric-acid-fed groups during the 60 d study period. 5. During the 60 d evaluation period, live weight gain, feed utilisation rate and final live weight were higher in the control group than in both of the cichoric-acid-fed groups. 6. Antibody titres against infectious bronchitis and infectious bursal disease did not differ between the three groups, but those for Newcastle disease were higher in the 2·5 mg/kg cichoric-acid-fed group than in the control group after 45 d. 7. Height and width of the jejunal villus and the thickness of the muscle layer were lower in the 5 mg/kg cichoric-acid-fed group than in both the control and the 2·5 mg/kg cichoric-acid-fed groups. The height of the ileal villus was also lower in the 5 mg/kg cichoric-acid-fed group than in the other two groups. 8. Echinacea extract supplementation for layer chicks appears not to benefit growth performance and intestinal histology during the growing period.
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Affiliation(s)
- E Gurbuz
- Department of Animal Nutrition and Nutritional Disease, Faculty of Veterinary Medicine, Selçuk University, 42003, Konya, Turkey.
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Markar SR, Karthikesalingam A, Falzon A, Kan Y. The diagnostic value of neutrophil: lymphocyte ratio in adults with suspected acute appendicitis. Acta Chir Belg 2010; 110:543-547. [PMID: 21158332] [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: 05/30/2023]
Abstract
AIM To validate the use of neutrophil : lymphocyte ratio (NLR) in diagnosing appendicitis. MATERIALS AND METHODS Patients who had had an appendicectomy but where no post-operative histology was available and those under the age of 16, or those who had undergone an interval appendicectomy in a non-emergency setting were excluded from this study. The NLR, WCC, CRP and NLR x CRP were recorded for all patients and these were then compared to their postoperative histology. To determine whether NLR on admission to hospital was an independent predictor of positive appendicitis histology, a multiple logistic regression model was constructed, using factors with a p-value of 0.1 or less in univariate analysis. RESULTS One thousand one hundred and seventeen (1117) patients who underwent an appendicectomy between January 2005 and January 2009 were included in this study. The median age was 34 years, with a range of 16-94 years. The area under the ROC curve for NLR was 0.836, compared to 0.779 for WCC, 0.732 for CRP and 0.815 for NLR x CRP. CONCLUSION The results of this study suggest that as an adjunct to clinical examination, NLR appears to be of greater diagnostic accuracy than either WCC or CRP alone.
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Affiliation(s)
- S R Markar
- Department of General Surgery, Cambridge University Hospitals NHS Foundation Trust.
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Tian Y, Kong B, Zhu W, Su S, Kan Y. Expression of steroidogenic factor 1 (SF-1) and steroidogenic acute regulatory protein (StAR) in endometriosis is associated with endometriosis severity. J Int Med Res 2010; 37:1389-95. [PMID: 19930843 DOI: 10.1177/147323000903700513] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
This study was designed to investigate the levels of expression of steroidogenic factor 1 (SF-1) and steroidogenic acute regulatory protein (StAR) in endometriosis, and to explore the association between these two factors and the menstrual cycle and the severity of endometriosis. Levels of SF-1 and StAR protein were evaluated using immunohistochemistry in 38 cases of endometriosis with ectopic endometria and in 25 normal endometria (controls). The SF-1 and StAR protein levels were significantly higher in ectopic endometria than in normal endometria. There was a significant correlation between the level of SF-1 and StAR in ectopic endometriotic tissues. It is concluded that protein levels of SF-1 and StAR are upregulated in ectopic endometria and are significantly correlated with the severity of endometriosis.
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Affiliation(s)
- Yongjie Tian
- Department of Obstetrics and Gynaecology, Provincial Hospital affiliated to Shandong University, Jinan, Shandong, China.
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Ou K, Kan Y. P198 MRI imaging of inguinal endometriosis - 2 case reports. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61689-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kan Y, Gökbulut A, Kartal M, Konuklugil B, Yılmaz G. Development and Validation of a LC Method for the Analysis of Phenolic Acids in Turkish Salvia Species. Chromatographia 2009. [DOI: 10.1365/s10337-009-1079-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Orhan I, Senol FS, Gülpinar AR, Kartal M, Sekeroglu N, Deveci M, Kan Y, Sener B. Acetylcholinesterase inhibitory and antioxidant properties of Cyclotrichium niveum, Thymus praecox subsp. caucasicus var. caucasicus, Echinacea purpurea and E. pallida. Food Chem Toxicol 2009; 47:1304-10. [PMID: 19285534 DOI: 10.1016/j.fct.2009.03.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Revised: 02/20/2009] [Accepted: 03/02/2009] [Indexed: 12/24/2022]
Abstract
The dichloromethane, ethyl acetate, ethanol, and aqueous extracts of Cyclotrichium niveum (CN) and Thymus praecox subsp. caucasicus var. caucasicus (TP), Echinacea purpurea (EPU), and E. pallida (EPA) along with the essential oils of CN and TP were assessed for their anti-acetylcholinesterase (AChE) and antioxidant activities. AChE inhibition was estimated using spectrophotometric method of Ellman. Antioxidant activity was evaluated by 2,2-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and ferrous ion-chelating power tests. Ferric-reducing antioxidant power (FRAP) of CN and TP were also tested. CN essential oil was found to contain isomenthone (56.21%) and pulegone (19.76%). The ethyl acetate (83.11-87.98%) and dichloromethane (73.45-84.02%) extracts of CN showed the highest AChE inhibition. The ethyl acetate and ethanol extracts of TP exerted significant DPPH scavenger effect. The water extracts of CN and TP and the chloroform extract of the aerial parts of EPU displayed the highest ferrous ion-chelating effect. The leaf and flower essential oils of TP had the best FRAP.
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Affiliation(s)
- I Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey.
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Kong B, Tian Y, Zhu W, Su S, Kan Y. Effects of Celecoxib and Nimesulide on the Proliferation of Ectopic Endometrial Stromal Cells in vitro. J Int Med Res 2008; 36:1032-8. [PMID: 18831898 DOI: 10.1177/147323000803600521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The effects of cyclooxygenase 2 (COX-2) selective inhibitors on the proliferation of ectopic endometrial stromal cells in vitro were investigated. Ectopic endometrial stromal cells were treated with either celecoxib or nimesulide for 24 and 48 h. The results showed that (i) both celecoxib and nimesulide inhibited the proliferation of ectopic endometrial stromal cells in vitro in a time- and dose-dependent manner; (ii) the expression of prostaglandin E2 was significantly inhibited by both celecoxib and nimesulide in a dose-dependent manner; (iii) the percentage of apoptotic cells was significantly higher for cells treated with celecoxib or nimesulide than for untreated cells; and (iv) the percentage of the cells in the G0/G1 phase increased after the cells were treated with either agent in a dose-dependent manner. These data suggest that celecoxib and nimesulide inhibited proliferation of ectopic endometrial stromal cells by inducing apoptosis and blocking the cell cycle at the G0/G1 phase.
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Affiliation(s)
- B Kong
- Department of Gynaecology and Obstetrics, Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Tian
- Department of Gynaecology and Obstetrics, Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - W Zhu
- Department of Emergency, The Second Hospital of Shandong University, Jinan, China
| | - S Su
- Department of Gynaecology and Obstetrics, Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Kan
- Department of Gynaecology and Obstetrics, Provincial Hospital Affiliated to Shandong University, Jinan, China
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Kan Y, Gökbulut A, Kartal M, Konuklugil B, Yılmaz G. Development and Validation of a LC Method for the Analysis of Phenolic Acids in Turkish Salvia Species. Chromatographia 2007. [DOI: 10.1365/s10337-007-0278-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Chiang A, Chuang Y, Kan Y, Fang C. 236. J Minim Invasive Gynecol 2005. [DOI: 10.1016/j.jmig.2005.07.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chuang Y, Kan Y, Fang C. 311. J Minim Invasive Gynecol 2005. [DOI: 10.1016/j.jmig.2005.07.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
BACKGROUND It has been suggested that depressed patients have a "negative bias" in recognising other people's emotions; however, the detailed structure of this negative bias is not fully understood. OBJECTIVES To examine the ability of depressed patients to recognise emotion, using moving facial and prosodic expressions of emotion. METHODS 16 depressed patients and 20 matched (non-depressed) controls selected one basic emotion (happiness, sadness, anger, fear, surprise, or disgust) that best described the emotional state represented by moving face and prosody. RESULTS There was no significant difference between depressed patients and controls in their recognition of facial expressions of emotion. However, the depressed patients were impaired relative to controls in their recognition of surprise from prosodic emotions, judging it to be more negative. CONCLUSIONS We suggest that depressed patients tend to interpret neutral emotions, such as surprise, as negative. Considering that the deficit was seen only for prosodic emotive stimuli, it would appear that stimulus clarity influences the recognition of emotion. These findings provide valuable information on how depressed patients behave in complicated emotional and social situations.
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Affiliation(s)
- Y Kan
- Shinshu University School of Medicine, Matsumoto, Japan
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Kyriakides C, Kan Y, Kerle M, Cheshire NJ, Mansfield AO, Wolfe JHN. 11-year experience with anatomical and extra-anatomical repair of mycotic aortic aneurysms. Eur J Vasc Endovasc Surg 2004; 27:585-9. [PMID: 15121107 DOI: 10.1016/j.ejvs.2004.02.024] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2004] [Indexed: 11/20/2022]
Abstract
BACKGROUND We have reviewed our management, of both ruptured and non-ruptured, abdominal and thoraco-abdominal mycotic aneurysms in order to determine the safety and efficacy of in situ and extra-anatomical prosthetic repairs. METHODS Data regarding presenting symptoms, investigations, operative techniques and outcome, were collected on patients treated at a singe centre over 11 years. RESULTS There were 11 men and four women, with a median age of 70 years (range, 24-79). All but one patient were symptomatic and six had a contained leak on admission. In six patients no organisms were identified in either blood or tissue cultures. Pre-operative CT identified; four infra-renal, four juxta-renal, three (Crawford thoraco-abdominal) type IV, three type III and one type II, aortic aneurysms. Thirteen were repaired with in situ prostheses and two required axillo-femoral prosthetic grafts. There were four early deaths. All surviving patients have been followed-up for a median duration of 38 months (range 1/2-112 months). There were two late deaths at 3 months (juxta-renal) and at 2 years (type III), the latter relating to graft infection. CONCLUSIONS In the absence of uncontrolled sepsis, repair of mycotic aortic aneurysms using prosthetic grafts can achieve durable results.
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Affiliation(s)
- C Kyriakides
- Regional Vascular Unit, St Mary's Hospital, London, UK
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Kan Y, Kyriakides C, Kerle M, Cheshire N, Mansfield A, Wolfe J. Six of the Best, Vascular 25. Br J Surg 2002. [DOI: 10.1046/j.1365-2168.89.s.1.20_6.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Igarashi Y, Kan Y, Fujii K, Fujita T, Harada K, Naoki H, Tabata H, Onaka H, Furumai T. Goadsporin, a chemical substance which promotes secondary metabolism and Morphogenesis in streptomycetes. II. Structure determination. J Antibiot (Tokyo) 2001; 54:1045-53. [PMID: 11858659 DOI: 10.7164/antibiotics.54.1045] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [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: 11/21/2022]
Abstract
The structure of goadsporin was determined by using spectroscopic techniques. NMR analysis revealed that goadsporin consists of 19 amino acids, two of which are dehydroalanines (Deala), and six of which are cyclized to oxazoles (Oxz) and thiazoles (Thz) by dehydrative cyclization and dehydrogenation from serine, threonine and cysteine. NMR analysis established seven partial structures, and their sequence was determined by CID-MS/MS. Negative mode FAB-MS/MS gave product ions arising from charge-remote fragmentation that allowed determination of the sequence of the amino acid components as AcNH-Ala-MeOxz-Val-Deala-MeOxz-Ile-Leu-Thz-Ser-Gly-Gly-MeOxz-Leu-Deala-Oxz-Ala-Gly-Thz-Val-OH. The chiral amino acids were determined by the advanced Marfey's method to have L-configurations.
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Affiliation(s)
- Y Igarashi
- Biotechnology Research Center, Toyama Prefectural University, Kosugi, Japan.
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Ukena T, Satake M, Usami M, Oshima Y, Naoki H, Fujita T, Kan Y, Yasumoto T. Structure elucidation of ostreocin D, a palytoxin analog isolated from the dinoflagellate Ostreopsis siamensis. Biosci Biotechnol Biochem 2001; 65:2585-8. [PMID: 11791741 DOI: 10.1271/bbb.65.2585] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [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: 11/08/2022]
Abstract
The structure of ostreocin D, a palytoxin analog isolated from the marine dinoflagellate Ostreopsis siamensis, was found to be 42-hydroxy-3,26-didemethyl-19,44-dideoxypalytoxin by detailed 2D NMR analyses of intact ostreocin D and its ozonolysis products. Partial stereochemical assignments were done. This result indicates that the dinoflagellate O. siamensis is one of the biogenetic origins of palytoxin.
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Affiliation(s)
- T Ukena
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
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Abstract
The authors present the case of a 13-year-old boy with a left temporal lobe infarction that developed during a 400-m run. Magnetic resonance (MR) angiography showed segmental narrowing of the left supraclinoid internal carotid artery (ICA) and a duplicated left middle cerebral artery (MCA). MR angiographic source images revealed a crescent-shaped left carotid lumen, indicative of a supraclinoid carotid dissection.
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Affiliation(s)
- A Uchino
- Department of Radiology, Saga Medical School, 5-1-1, Nabeshima, 849-8501, Saga, Japan.
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Tamamura H, Sugioka M, Odagaki Y, Omagari A, Kan Y, Oishi S, Nakashima H, Yamamoto N, Peiper SC, Hamanaka N, Otaka A, Fujii N. Conformational study of a highly specific CXCR4 inhibitor, T140, disclosing the close proximity of its intrinsic pharmacophores associated with strong anti-HIV activity. Bioorg Med Chem Lett 2001; 11:359-62. [PMID: 11212110 DOI: 10.1016/s0960-894x(00)00664-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [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 the solution structure of T140, a truncated polyphemusin peptide analogue that efficiently inhibits infection of target cells by T-cell line-tropic strains of HIV-1 through its specific binding to a chemokine receptor, CXCR4. Nuclear magnetic resonance analysis and molecular dynamic calculations revealed that T140 has a rigidly structured conformation constituted by an antiparallel beta-sheet and a type II' beta-turn. A protuberance is formed on one side of the beta-sheet by the side-chain functional groups of the three amino acid residues (L-3-(2-naphthyl)alanine, Tyr5 and Arg14), each of which is indispensable for strong anti-HIV activity. These findings provide a rationale to dissect the structural basis for the ability of this compound to block the interaction between CXCR4 and envelope glycoproteins from T-tropic strains of HIV-1.
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Affiliation(s)
- H Tamamura
- Graduate School of Pharmaceutical Sciences, Kyoto University, Japan.
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31
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Abstract
3,5-Di-O-(beta-glucopyranosyl) pelargonidin 6''-O-4,6'''-O-1-cyclic malate and a previously reported cyanidin equivalent, 3,5-di-O-(beta-glucopyranosyl) cyanidin 6''-O-4,6'''-O-1-cyclic malate were identified from petals of deep pink and red-purple flower cultivars of Dianthus caryophyllus, respectively.
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Affiliation(s)
- M Nakayama
- Department of Floriculture, National Research Institute of Vegetables, Ornamental Plants and Tea, Ministry of Agriculture, Forestry and Fisheries, Ano, Mie, Japan
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Abstract
Isomalyngamides A and B (1, 2) were isolated and characterized from a collection of the cyanobacterium Lyngbya majuscula from Hawaiian waters. These compounds represent a new type of malyngamide, similar to malyngamides Q and R, in which the conformation of the chloromethylene group is opposite from the majority of previously reported malyngamides. The geometry of the chloromethylene moiety was elucidated from the long-range coupling constants ((3)J(C)(-)(H)) obtained from editing-HETLOC and phase-sensitive HMBC experiments. Isomalyngamides A and B (1, 2) showed lethal toxicity to crayfish.
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Affiliation(s)
- Y Kan
- Suntory Institute for Bioorganic Research, Wakayamadai, Shimamoto, Mishima-gun, Osaka 618-8503, Japan.
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Konno K, Fujishima T, Maki S, Liu Z, Miura D, Chokki M, Ishizuka S, Yamaguchi K, Kan Y, Kurihara M, Miyata N, Smith C, DeLuca HF, Takayama H. Synthesis, biological evaluation, and conformational analysis of A-ring diastereomers of 2-methyl-1,25-dihydroxyvitamin D(3) and their 20-epimers: unique activity profiles depending on the stereochemistry of the A-ring and at C-20. J Med Chem 2000; 43:4247-65. [PMID: 11063621 DOI: 10.1021/jm000261j] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [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: 11/30/2022]
Abstract
All eight possible A-ring diastereomers of 2-methyl-1, 25-dihydroxyvitamin D(3) (2) and 2-methyl-20-epi-1, 25-dihydroxyvitamin D(3) (3) were convergently synthesized. The A-ring enyne synthons 19 were synthesized starting with methyl (S)-(+)- or (R)-(-)-3-hydroxy-2-methylpropionate (8). This was converted to the alcohol 14 as a 1:1 epimeric mixture in several steps. After having been separated by column chromatography, each isomer led to the requisite A-ring enyne synthons 19 again as 1:1 mixtures at C-1. Coupling of the resulting A-ring enynes 20a-h with the CD-ring portions 5a,b in the presence of a Pd catalyst afforded the 2-methyl analogues 2a-h and 3a-h in good yield. In this way, all possible A-ring diastereomers were synthesized. The synthesized analogues were biologically evaluated both in vitro and in vivo. The potency was highly dependent on the stereochemistry of each isomer. In particular, the alpha alpha beta-isomer 2g exhibited 4-fold higher potency than 1 alpha,25-dihydroxyvitamin D(3) (1) both in bovine thymus VDR binding and in elevation of rat serum calcium concentration and was twice as potent as the parent compound in HL-60 cell differentiation. Furthermore, its 20-epimer, that is, 20-epi-alpha alpha beta 3g, exhibited exceptionally high activities: 12-fold higher in VDR binding affinity, 7-fold higher in calcium mobilization, and 590-fold higher in HL-60 cell differentiation, as compared to 1 alpha,25-dihydroxyvitamin D(3) (1). Accordingly, the double modification of 2-methyl substitution and 20-epimerization resulted in unique activity profiles. Conformational analysis of the A-ring by (1)H NMR and an X-ray crystallographic analysis of the alpha alpha beta-isomer 2g are also described.
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Affiliation(s)
- K Konno
- Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa 199-0195, Japan
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Abstract
Tetramethylpyrazine (TMPZ) is an active ingredient of a Chinese herbal medicine (Ligusticum wallichii Franchat). In this study, TMPZ (50-200 microM) significantly increased production of nitrate and cyclic GMP in human platelets within a 15-min incubation period. TMPZ concentration-dependently inhibited intracellular Ca2+ mobilization in human platelets stimulated by collagen (5 microg/ml). Furthermore, TMPZ concentration (50 and 200 microM)- and time (15 and 30 min)-dependently triggered endothelial-type constitutive nitric oxide synthase (ecNOS) protein expression in human platelets. These results indicated that TMPZ at micromolar concentrations stimulated nitric oxide production in human platelets via a novel mechanism that activated ecNOS protein expression.
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Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences & Department of Pharmacology, Taipei Medical College, Taiwan.
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35
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Kim WK, Kan Y, Ganea D, Hart RP, Gozes I, Jonakait GM. Vasoactive intestinal peptide and pituitary adenylyl cyclase-activating polypeptide inhibit tumor necrosis factor-alpha production in injured spinal cord and in activated microglia via a cAMP-dependent pathway. J Neurosci 2000; 20:3622-30. [PMID: 10804204 PMCID: PMC6772690] [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] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/1999] [Revised: 02/29/2000] [Accepted: 03/01/2000] [Indexed: 02/16/2023] Open
Abstract
Tumor necrosis factor-alpha (TNF-alpha) production accompanies CNS insults of all kinds. Because the neuropeptide vasoactive intestinal peptide (VIP) and the structurally related peptide pituitary adenylyl cyclase-activating polypeptide (PACAP) have potent anti-inflammatory effects in the periphery, we investigated whether these effects extend to the CNS. TNF-alpha mRNA was induced within 2 hr after rat spinal cord transection, and its upregulation was suppressed by a synthetic VIP receptor agonist. Cultured rat microglia were used to examine the mechanisms underlying this inhibition because microglia are the likely source of TNF-alpha in injured CNS. In culture, increases in TNF-alpha mRNA resulting from lipopolysaccharide (LPS) stimulation were reduced significantly by 10(-7) m VIP and completely eliminated by PACAP at the same concentration. TNF-alpha protein levels were reduced 90% by VIP or PACAP at 10(-7) m. An antagonist of VPAC(1) receptors blocked the action of VIP and PACAP, and a PAC(1) antagonist blocked the action of PACAP. A direct demonstration of VIP binding on microglia and the existence of mRNAs for VPAC(1) and PAC(1) (but not VPAC(2)) receptors argue for a receptor-mediated effect. The action of VIP is cAMP-mediated because (1) activation of cAMP by forskolin mimics the action; (2) PKA inhibition by H89 reverses the neuropeptide-induced inhibition; and (3) the lipophilic neuropeptide mimic, stearyl-norleucine(17) VIP (SNV), which does not use a cAMP-mediated pathway, fails to duplicate the inhibition. We conclude that VIP and PACAP inhibit the production of TNF-alpha from activated microglia by a cAMP-dependent pathway.
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Affiliation(s)
- W K Kim
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102, USA
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36
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Igarashi Y, Takagi K, Kan Y, Fujii K, Harada K, Furumai T, Oki T. Arisostatins A and B, new members of tetrocarcin class of antibiotics from Micromonospora sp. TP-A0316. II. Structure determination. J Antibiot (Tokyo) 2000; 53:233-40. [PMID: 10819293 DOI: 10.7164/antibiotics.53.233] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 11/21/2022]
Abstract
Structures of arisostatins A and B were determined by spectroscopic analyses. Arisostatins were found to be new analogs of tetrocarcin A and possess an iso-butanoyldigitoxose unit instead of the acetyldigitoxose one. NMR analyses of arisostatins and tetrocarcin A led to the revision of the anomeric configurations in the tetrasaccharide moiety of tetrocarcin A.
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Affiliation(s)
- Y Igarashi
- Biotechnology Research Center, Toyama Prefectural University, Kosugi, Japan
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37
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Chiang CH, Tsai CL, Kan YC. Acoustic inspection of bond strength of steel-reinforced mortar after exposure to elevated temperatures. Ultrasonics 2000; 38:534-536. [PMID: 10829721 DOI: 10.1016/s0041-624x(99)00088-8] [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: 05/23/2023]
Abstract
In order to evaluate the bond strength between the reinforcement and concrete after fire damage, a combination of acoustic through-transmission and pull-out tests were used. Previous studies have shown a 25% decrease in the ultrasonic pulse velocity at 90% of the maximum load at room temperature. The specimens were kept in the oven at an elevated temperature for 1, 2, or 3 h. They were then removed and cooled to room temperature. Inspection was conducted using a high-power ultrasonic pulse velocity system while a pull-out load was applied. The correlation between preheated temperature, acoustic wave velocity, and the applied load was analyzed. Initial results show that bond strength and pulse velocity decreased substantially as the temperature or the heating time increased.
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Affiliation(s)
- CH Chiang
- Department of Construction Engineering, Chaoyang University of Technology, Taichung County, Taiwan.
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38
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Inohara-Ochiai M, Okada M, Nakayama T, Hemmi H, Ueda T, Iwashita T, Kan Y, Shibano Y, Ashikari T, Nishino T. An active-site mutation causes enhanced reactivity and altered regiospecificity of transglucosylation catalyzed by the Bacillus sp. SAM1606 α-glucosidase. J Biosci Bioeng 2000; 89:431-7. [PMID: 16232773 DOI: 10.1016/s1389-1723(00)89092-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2000] [Accepted: 02/08/2000] [Indexed: 10/18/2022]
Abstract
Bacillus sp. SAM1606 alpha-glucosidase catalyzes the transglucosylation of sucrose to produce three regioisomers of the glucosylsucroses, with theanderose (6-O(G)-glucosylsucrose) as the most abundant transfer product. To find the active-site amino acid residues which can affect the reactivity and regiospecificity of the glucosyl transfer, 16 mutants with amino acid substitutions near the active site were allowed to react with 1.75 M sucrose at 60 degrees C, pH 6.0, and the course of transglucosylation as well as the product specificity were analyzed. The sites of the amino acid substitutions were selected by comparing the conserved amino acid sequences located near the active site of the SAM1606 enzyme with those of the Bacillus oligo-1,6-glucosidases (O16G), which have very high amino acid sequence similarities near the active site but have a distinct substrate specificity. The results showed that, among the mutated SAM1606 enzymes examined, only the mutants with substitution of Gly273 with Pro showed an altered reactivity and specificity of transglucosylation; these mutants exhibited a significantly enhanced initial velocity of glucosyl transfer, yielding isomelezitose (6-O(F)-glucosylsucrose) instead of theanderose as the major transfer product. These results indicate that the substitution of Gly273 with Pro critically governs the enhanced reactivity and altered specificity of the transglucosylation. The notion that the amino acid residue at this position is the determinant of the glucosyl-transfer specificity was further confirmed by observation that the Bacillus cereus O16G, which has a proline at the corresponding position, produced isomelezitose as the major transfer product during transglucosylation with sucrose.
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Horgen FD, delos Santos DB, Goetz G, Sakamoto B, Kan Y, Nagai H, Scheuer PJ. A new depsipeptide from the sacoglossan mollusk Elysia ornata and the green alga Bryopsis species. J Nat Prod 2000; 63:152-154. [PMID: 10650101 DOI: 10.1021/np990402o] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new cyclic depsipeptide, kahalalide O (1), was isolated from the sacoglossan Elysia ornata and its algal diet Bryopsis sp. The structure was elucidated primarily by NMR and MS spectral methods, and the stereochemistry of the amino acid residues was determined by chiral HPLC and Marfey analyses. Unlike the related metabolite kahalalide F, which is in development as a potential anticancer agent, kahalalide O (1) was inactive in arresting the growth of P-388, A549, HT29, and MEL28 cancer cell lines in vitro.
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Affiliation(s)
- F D Horgen
- Department of Chemistry, University of Hawaii at Manoa, 2545 The Mall, Honolulu, Hawaii 96822, USA
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Kan Y, Fujita T, Sakamoto B, Hokama Y, Nagai H. Kahalalide K: A new cyclic depsipeptide from the hawaiian green alga bryopsis species. J Nat Prod 1999; 62:1169-1172. [PMID: 10479330 DOI: 10.1021/np990053y] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Kahalalide K (1), a new cyclic depsipeptide, was isolated from the Hawaiian green alga Bryopsis sp. Kahalalide K was determined to possess a new array of three L- and three D-amino acids, including a 3-hydroxy-9-methyldecanoic acid that had been previously reported in kahalalides E, H, and J.
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Affiliation(s)
- Y Kan
- Suntory Institute for Bioorganic Research, Wakayamadai, Shimamoto, Mishima-gun, Osaka, 618-8503, Japan, and John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
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41
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Henderson PT, Jones D, Hampikian G, Kan Y, Schuster GB. Long-distance charge transport in duplex DNA: the phonon-assisted polaron-like hopping mechanism. Proc Natl Acad Sci U S A 1999; 96:8353-8. [PMID: 10411879 PMCID: PMC17521 DOI: 10.1073/pnas.96.15.8353] [Citation(s) in RCA: 367] [Impact Index Per Article: 14.7] [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: 11/18/2022] Open
Abstract
An anthraquinone-linked duplex DNA oligomer containing 60 base pairs was synthesized by PCR. The strand complementary to the quinone-containing strand has four isolated GG steps, which serve as traps for a migrating radical cation. Irradiation of the quinone leads to electron transfer from the DNA to the quinone forming the anthraquinone radical anion and a base radical cation. The radical cation migrates through the DNA, causing reaction at GG steps revealed as strand breaks. The efficiency of strand cleavage falls off exponentially with distance from the quinone (slope = -0.02 A(-1)). This finding necessitates reinterpretation of mechanisms proposed for radical cation migration in DNA. We propose that radical cations form self-trapped polarons that migrate by thermally activated hopping.
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Affiliation(s)
- P T Henderson
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
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42
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Sheu JR, Hung WC, Wu CH, Ma MC, Kan YC, Lin CH, Lin MS, Luk HN, Yen MH. Reduction in lipopolysaccharide-induced thrombocytopenia by triflavin in a rat model of septicemia. Circulation 1999; 99:3056-62. [PMID: 10368125 DOI: 10.1161/01.cir.99.23.3056] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Thrombocytopenia frequently occurs early in the course of Gram-negative bacterial infections. Triflavin, an Arg-Gly-Asp-containing disintegrin, has been suggested to interfere with the interaction of fibrinogen with the glycoprotein IIb/IIIa complex. The present study was undertaken to determine whether triflavin could prevent thrombocytopenia in lipopolysaccharide (LPS)-treated rats. METHODS AND RESULTS In this study, 51Cr-labeled platelets were used to assess blood and tissue platelet accumulation after LPS challenge. The administration of LPS (4 mg/kg IV bolus) for 4 hours induced a reduction in radiolabeled platelets in blood and an obvious accumulation of platelets in liver. Triflavin (500 microg/kg) but not GRGDS (20 mg/kg) significantly prevented the alteration of radiolabeled platelet distribution in blood and liver when induced by LPS. Furthermore, triflavin but not GRGDS markedly suppressed the elevation in plasma thromboxane B2 concentration within the 4-hour period of LPS administration. In LPS-treated rats, the 5-hydroxytryptamine level was lower in the blood and higher in the liver compared with levels in normal saline-treated rats. Pretreatment with triflavin (500 microg/kg) significantly reversed the 5-hydroxytryptamine concentration in blood and liver of LPS-treated rats. In histological examinations and platelet adhesion assay, triflavin markedly inhibited the adhesion of platelets to subendothelial matrixes in vivo and in vitro. CONCLUSIONS The results indicate that triflavin effectively prevents thrombocytopenia, possibly through the following 2 mechanisms: (1) Triflavin markedly inhibits platelet aggregation, resulting in decreased thromboxane A2 formation. (2) It inhibits the adhesion of platelets to subendothelial matrixes, thereby leading to a reversal in the distribution of platelets in blood and liver in LPS-treated rats.
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Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Department of Anatomy, Taipei Medical College, Taipei, Taiwan
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Harada M, Kan Y, Naoki H, Fukui Y, Kageyama N, Nakai M, Miki W, Kiso Y. Identification of the major antioxidative metabolites in biological fluids of the rat with ingested (+)-catechin and (-)-epicatechin. Biosci Biotechnol Biochem 1999; 63:973-7. [PMID: 10427682 DOI: 10.1271/bbb.63.973] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.2] [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: 11/08/2022]
Abstract
(+)-Catechin and (-)-epicatechin are known to be biologically effective antioxidants present in the human diet, particularly in wine and tea. We studied the metabolism of these compounds to elucidate the truly active structures in biological fluids by their oral administration to rats. Without any treatment with beta-glucuronidase and sulfatase, a pair of metabolites were detected at much higher concentrations in the plasma, bile, and urine than the originally ingested compounds. Each major metabolite found in the plasma at the highest concentration was excreted in both the bile and urine, and was purified from urine. Their chemical structures were established to be (+)-catechin 5-O-beta-glucuronide and (-)-epicatechin 5-O-beta-glucuronide by MS and NMR analyses. These glucuronide conjugates exhibited high antioxidative activities as superoxide anion radical scavengers like their parent compounds. It is concluded that (+)-catechin 5-O-beta-glucuronide and (-)-epicatechin 5-O-beta-glucuronide are the biologically active in vivo structures of the ingested polyphenolic antioxidants.
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Affiliation(s)
- M Harada
- Institute for Fundamental Research, Suntory Ltd., Sunbor, Osaka, Japan.
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Delgado M, Munoz-Elias EJ, Kan Y, Gozes I, Fridkin M, Brenneman DE, Gomariz RP, Ganea D. Vasoactive intestinal peptide and pituitary adenylate cyclase-activating polypeptide inhibit tumor necrosis factor alpha transcriptional activation by regulating nuclear factor-kB and cAMP response element-binding protein/c-Jun. J Biol Chem 1998; 273:31427-36. [PMID: 9813054 DOI: 10.1074/jbc.273.47.31427] [Citation(s) in RCA: 139] [Impact Index Per Article: 5.3] [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: 11/06/2022] Open
Abstract
Tumor necrosis factor alpha (TNFalpha), an early cytokine produced by activated macrophages, plays an essential role in normal and pathological inflammatory reactions. The excessive production of TNFalpha is prevented by the so-called "macrophage-deactivating factors." This study examines the role of two structurally related neuropeptides, the vasoactive intestinal peptide (VIP) and the pituitary adenylate cyclase-activating peptide (PACAP), as inhibitors of TNFalpha. Both VIP and PACAP inhibit TNFalpha production from lipopolysaccharide-stimulated RAW 246.7 cells in a dose- and time-dependent manner. Although the activated cells express mRNA for all three VIP/PACAP receptors, agonist and antagonist studies indicate that the major receptor involved is VIP1R. VIP/PACAP inhibit TNFalpha gene expression by affecting both NF-kB binding and the composition of the cAMP responsive element binding complex (CREB/c-Jun). Two transduction pathways, a cAMP-dependent and a cAMP-independent pathway, are involved in the inhibition of TNFalpha gene expression and appear to differentially regulate the transcriptional factors involved. Because TNFalpha plays a central role in various inflammatory diseases such as endotoxic shock, multiple sclerosis, cerebral malaria, and various autoimmune conditions, the down-regulatory effect of VIP/PACAP may have a significant therapeutic potential.
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Affiliation(s)
- M Delgado
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102, USA
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Ramaiah D, Kan Y, Koch T, Orum H, Schuster GB. Enzymatic reaction with unnatural substrates: DNA photolyase (Escherichia coli) recognizes and reverses thymine [2+2] dimers in the DNA strand of a DNA/PNA hybrid duplex. Proc Natl Acad Sci U S A 1998; 95:12902-5. [PMID: 9789012 PMCID: PMC23647 DOI: 10.1073/pnas.95.22.12902] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 11/18/2022] Open
Abstract
Peptide nucleic acids (PNA) are mimics with normal bases connected to a pseudopeptide chain that obey Watson-Crick rules to form stable duplexes with itself and natural nucleic acids. This has focused attention on PNA as therapeutic or diagnostic reagents. Duplexes formed with PNA mirror some but not all properties of DNA. One fascinating aspect of PNA biochemistry is their reaction with enzymes. Here we show an enzyme reaction that operates effectively on a PNA/DNA hybrid duplex. A DNA oligonucleotide containing a cis, syn-thymine [2+2] dimer forms a stable duplex with PNA. The hybrid duplex is recognized by photolyase, and irradiation of the complex leads to the repair of the thymine dimer. This finding provides insight into the enzyme mechanism and provides a means for the selective repair of thymine photodimers.
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Affiliation(s)
- D Ramaiah
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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Sheu JR, Kan YC, Hung WC, Su CH, Lin CH, Lee YM, Yen MH. The antiplatelet activity of rutaecarpine, an alkaloid isolated from Evodia rutaecarpa, is mediated through inhibition of phospholipase C. Thromb Res 1998; 92:53-64. [PMID: 9792112 DOI: 10.1016/s0049-3848(98)00112-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [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: 02/09/2023]
Abstract
In this study, the mechanism involved in the antiplatelet activity of rutaecarpine in human platelet suspensions was investigated. In platelet suspensions (4.5 x 10(8)/ml), rutaecarpine (100 and 200 microM) did not influence the binding of FITC-triflavin to platelet glycoprotein IIb/IIIa complex. Additionally, rutaecarpine (200 microM) did not significantly change the fluorescence of platelet membrane labeled with diphenylhexatriene (DPH). On the other hand, rutaecarpine (50 and 100 microM) dose-dependently inhibited the increase in intracellular free Ca2+ of Fura 2-AM loaded platelets stimulated by collagen. Moreover, rutaecarpine (100 and 200 microM) did not significantly affect the thromboxane synthetase activity of aspirin-treated platelet microsomes. Furthermore, retaecarpine (100 and 200 microM) significantly inhibited [3H]arachidonic acid released in collagen-activated platelets but not in unactivated-platelets. Nitric oxide (NO) production in human platelets was measured by a chemiluminesence detection method in this study. Rutaecarpine (100 and 200 microM) did not significantly affect nitrate production in collagen (10 microg/ml)-induced human platelet aggregation. On the other hand, various concentrations of rutaecarpine (50, 100, and 200 microM) dose-dependently inhibited [3H]inositol monophosphate formation stimulated by collagen (10 microg/ml) in [3H]myoinositol-loaded platelets at different incubation times (1, 2, 3, and 5 minutes). It is concluded that the antiplatelet activity of rutaecarpine may possibly be due to the inhibition of phospholipase C activity, leading to reduce phosphoinositide breakdown, followed by the inhibition of thromboxane A2 formation, and then inhibition of [Ca2+]i mobilization of platelet aggregation stimulated by agonists.
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Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Taipei Medical College, Taiwan.
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Abstract
In this study, Escherichia coli lipopolysaccharide (LPS) dose-dependently (100-300 microg/ml) and time-dependently (10-60 min) inhibited platelet aggregation in human platelets stimulated by agonists. LPS also dose-dependently inhibited the phosphoinositide breakdown and the intracellular Ca+2 mobilization in human platelets stimulated by collagen. LPS (300 microg/ml) also significantly inhibited the thromboxane A2 formation stimulated by collagen in human platelets. Moreover, LPS (100-300 microg/ml) dose-dependently decreased the fluorescence of platelet membranes tagged with diphenylhexatrience. In addition, LPS (200 and 300 microg/ml) significantly increased the formation of cyclic GMP but not cyclic AMP in platelets. LPS (200 microg/ml) also significantly increased the production of nitrate within a 30 min incubation period. Rapid phosphorylation of a platelet protein of Mr 47,000, a marker of protein kinase C activation, was triggered by phorbol-12-13-dibutyrate (PDBu, 50 nM). This phosphorylation was markedly inhibited by LPS (200 microg/ml) within a 30 min incubation period. These results indicate that the antiplatelet activity of LPS may be involved in two important pathways. (1) LPS may induce conformational changes in the platelet membrane, leading to change in the activity of phospholipase C. (2) LPS also activated the formation of nitric oxide (NO)/cyclic GMP in human platelets, resulting in inhibition of platelet aggregation. Therefore, LPS-mediated alteration of platelet function may contribute to bleeding diathesis in septicaemic and endotoxaemic patients.
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Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Taipei Medical College, Taiwan
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Kan Y, Fujita T, Nagai H, Sakamoto B, Hokama Y. Malyngamides M and N from the Hawaiian Red Alga Gracilaria coronopifolia. J Nat Prod 1998; 61:152-155. [PMID: 9548841 DOI: 10.1021/np970423n] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two new malyngamides, M and N (1, 2), were isolated along with malyngamide I acetate (3) from the Hawaiian red alga Gracilaria coronopifolia. Our results suggest that malyngamide N (2) is a revised structure of deacetoxystylocheilamide (5). The absolute configuration of malyngamide I acetate was deduced to be 3 using the reversed octant rule.
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Affiliation(s)
- Y Kan
- Suntory Institute for Bioorganic Research, Wakayamadai, Shimamoto, Mishima-gun, Osaka 618, Japan, and John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii 96822
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Abstract
Tetramethylpyrazine is the active ingredient of a Chinese herbal medicine. In this study, tetramethylpyrazine was tested for its antiplatelet activities in human platelet suspensions. In human platelets, tetramethylpyrazine (0.5-1.5 mM) dose-dependently inhibited both platelet aggregation and ATP-release reaction induced by a variety of agonists (i.e., ADP, collagen, and U46619). Tetramethylpyrazine (0.5 mM) did not significantly change the fluorescence of platelet membranes labeled with diphenylhexatriene, even at the high concentration (1.5 mM). Furthermore, tetramethylpyrazine (0.5-1.5 mM) dose-dependently inhibited [3H]inositol monophosphate formation stimulated by collagen (5 microg/ml) in [3H]myoinositol loaded platelets. Tetramethylpyrazine (0.5-1.5 mM) also dose-dependently inhibited the intracellular free Ca2+ rise of Fura 2-AM loaded platelets stimulated by collagen (5 microg/ml). Moreover, tetramethylpyrazine (0.5-1.5 mM) inhibited thromboxane B2 formation stimulated by collagen. At a higher concentration (1.0 mM), tetramethylpyrazine has also been shown to influence the binding of FITC-triflavin to platelet glycoprotein IIb/IIIa complex. Triflavin, a specific glycoprotein IIb/IIIa complex antagonist purified from Trimeresurus flavoviridis venom. It is concluded that the antiplatelet activity of tetramethylpyrazine may possibly involve two pathways: 1) at a lower concentration (0.5 mM), tetramethylpyrazine is shown to inhibit phosphoinositide breakdown and thromboxane A2 formation; and 2) at a higher concentration (1.0 mM), it leads to the inhibition of platelet aggregation through binding to the glycoprotein IIb/IIIa complex.
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Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Taipei Medical College, Taiwan.
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Sheu JR, Yen MH, Kan YC, Hung WC, Chang PT, Luk HN. Inhibition of angiogenesis in vitro and in vivo: comparison of the relative activities of triflavin, an Arg-Gly-Asp-containing peptide and anti-alpha(v)beta3 integrin monoclonal antibody. Biochim Biophys Acta 1997; 1336:445-54. [PMID: 9367172 DOI: 10.1016/s0304-4165(97)00057-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Disintegrin which contains the amino acid sequence Arg-Gly-Asp (RGD), has been implicated as a recognition site in interactions between extracellular matrix (ECM) and cell membrane receptors. Triflavin, a 7.5 kDa cysteine-rich polypeptide purified from Trimeresurus flavoviridis snake venom, belongs to a family of disintegrins. Integrin alpha(v)beta3 has recently been identified as a marker of angiogenic blood vessels and therefore anti-alpha(v)beta3 mAb may significantly inhibit angiogenesis. Therefore, this study was designed to compare the relative activity of triflavin and anti-alpha(v)beta3 mAb in human umbilical vein endothelial cell (HUVEC) adhesion and migration in vitro, and on angiogenesis induced by TNF(alpha) in chicken chorioallantoic membrane (CAM). In this study, it was shown that triflavin (0.1 to 0.4 microM) dose-dependently inhibited the adhesion of HUVECs to ECMs (i.e., vitronectin, fibronectin, laminin and collagen type IV). At a concentration of 10 microM, anti-alpha(v)beta3 mAb almost completely inhibited the adhesion of cells to vitronectin, had a moderate inhibitory effect on fibronectin and laminin, but only a slight inhibitory effect on collagen type IV. On the other hand, vitronectin and fibronectin promote a significantly greater extent of cell adhesion and migration than laminin or collagen type IV over a wide range of concentrations (5 to 15 microg/ml). In cell migration studies, triflavin (0.4 microM) inhibited more markedly vitronectin- and fibronectin-mediated migration than that mediated by laminin- and collagen type IV. Comparison of the relative effectiveness of triflavin with anti-alpha(v)beta3 mAb, showed that triflavin was at least twenty to thirty times more potent than anti-alpha(v)beta3 mAb at inhibiting cell adhesion and migration. Furthermore, we used TNF(alpha) as an inducer of angiogenesis in the CAM assay. Close examination of the effects of triflavin and anti-alpha(v)beta3 mAb on TNF(alpha)-induced angiogenesis revealed the presence of discontinuous and disrupted blood vessels. However, anti-alpha(v)beta3 mAb showed a significant effect only at a higher concentration (10 microM). These results suggest that the inhibition of angiogenesis may have been due to interference with the adhesion and migration of endothelial cells to ECMs. The results also indicate that triflavin has a more powerful inhibitory effect than anti-alpha(v)beta3 mAb on angiogenesis, suggesting that triflavin could theoretically be used as a reasonable therapeutic adjuvant for therapy or prevention of angiogenesis-induced diseases.
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MESH Headings
- Allantois/blood supply
- Allantois/drug effects
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/pharmacology
- Cell Adhesion/drug effects
- Cell Adhesion/physiology
- Cells, Cultured
- Chick Embryo
- Chorion/blood supply
- Chorion/drug effects
- Crotalid Venoms/pharmacology
- Dose-Response Relationship, Drug
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/physiology
- Extracellular Matrix Proteins
- Humans
- Kinetics
- Neovascularization, Physiologic/drug effects
- Neovascularization, Physiologic/physiology
- Oligopeptides/pharmacology
- Peptides/isolation & purification
- Peptides/pharmacology
- Receptors, Vitronectin/immunology
- Receptors, Vitronectin/physiology
- Trimeresurus
- Tumor Necrosis Factor-alpha/pharmacology
- Umbilical Veins
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Affiliation(s)
- J R Sheu
- Graduate Institute of Medical Sciences, Taipei Medical College, Taiwan.
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