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Dong Y, Lu S, Wang Z, Liu L. CCTs as new biomarkers for the prognosis of head and neck squamous cancer. Open Med (Wars) 2020; 15:672-688. [PMID: 33313411 PMCID: PMC7706129 DOI: 10.1515/med-2020-0114] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/30/2020] [Accepted: 06/18/2020] [Indexed: 12/23/2022] Open
Abstract
The chaperonin-containing T-complex protein 1 (CCT) subunits participate in diverse diseases. However, little is known about their expression and prognostic values in human head and neck squamous cancer (HNSC). This article aims to evaluate the effects of CCT subunits regarding their prognostic values for HNSC. We mined the transcriptional and survival data of CCTs in HNSC patients from online databases. A protein-protein interaction network was constructed and a functional enrichment analysis of target genes was performed. We observed that the mRNA expression levels of CCT1/2/3/4/5/6/7/8 were higher in HNSC tissues than in normal tissues. Survival analysis revealed that the high mRNA transcriptional levels of CCT3/4/5/6/7/8 were associated with a low overall survival. The expression levels of CCT4/7 were correlated with advanced tumor stage. And the overexpression of CCT4 was associated with higher N stage of patients. Validation of CCTs' differential expression and prognostic values was achieved by the Human Protein Atlas and GEO datasets. Mechanistic exploration of CCT subunits by the functional enrichment analysis suggests that these genes may influence the HNSC prognosis by regulating PI3K-Akt and other pathways. This study implies that CCT3/4/6/7/8 are promising biomarkers for the prognosis of HNSC.
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Affiliation(s)
- Yanbo Dong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, 95th Yong'an Road, Xicheng District, Beijing 100050, China
| | - Siyu Lu
- Department of Emergency, Aviation General Hospital, Beijing 100012, China
| | - Zhenxiao Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, 95th Yong'an Road, Xicheng District, Beijing 100050, China
| | - Liangfa Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, 95th Yong'an Road, Xicheng District, Beijing 100050, China
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2
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Qiu X, He X, Huang Q, Liu X, Sun G, Guo J, Yuan D, Yang L, Ban N, Fan S, Tao T, Wang D. Overexpression of CCT8 and its significance for tumor cell proliferation, migration and invasion in glioma. Pathol Res Pract 2015; 211:717-25. [PMID: 26304164 DOI: 10.1016/j.prp.2015.04.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 03/22/2015] [Accepted: 04/01/2015] [Indexed: 01/01/2023]
Abstract
Overexpression of chaperonin containing t-complex polypeptide 1 (TCP1), or CCT, has been reported in various classes of malignancies. However, little is known about the expression of t-complex protein subunits TCP1theta (CCT8) in gliomas. In this study, the expression of CCT8 protein was detected using blotting analysis and immunohistochemistry. CCT8 was found to be overexpressed in gliomas and to correlate with the WHO grade of gliomas. To further investigate the biological function of CCT8 in gliomas, CCT8-silenced U87 glioblastoma multiforme (GBM) and U251MG cells were constructed using a small interference RNA (siRNA) sequence. The knockdown effect of CCT8 on proliferation and invasion in these cells was analyzed using the CCK8, flow cytometry cycle, scratch, transwell invasion and fluorescence assays. Compared with the controls, the glioma cells expressing CCT8-siRNA exhibited a significantly decreased proliferation and invasion capacity, as well as a dysregulated cell cytoskeleton. This study showed that high CCT8 protein expression might be related to poor outcome of glioma, and that CCT8 regulates the proliferation and invasion of glioblastomas.
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Affiliation(s)
- Xiaojun Qiu
- Department of Neurosurgery, Affiliated Hospital, Nantong University, Nantong 226001, PR China
| | - Xiaojuan He
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China
| | - Qingfeng Huang
- Department of Neurosurgery, Affiliated Hospital, Nantong University, Nantong 226001, PR China
| | - Xianchen Liu
- Department of Neurosurgery, Affiliated Hospital, Nantong University, Nantong 226001, PR China
| | - Guan Sun
- Department of Neurosurgery, Affiliated Hospital, Nantong University, Nantong 226001, PR China
| | - Jun Guo
- Department of Neurosurgery, Affiliated Hospital, Nantong University, Nantong 226001, PR China
| | - Damin Yuan
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China
| | - Lixiang Yang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China
| | - Na Ban
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China
| | - Shaochen Fan
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China
| | - Tao Tao
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China.
| | - Donglin Wang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Department of Pathology, Medical College, Nantong University, Nantong 226001, PR China.
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MIĘKUS NATALIA, OLĘDZKA ILONA, PLENIS ALINA, WOŹNIAK ZOFIA, LEWCZUK ANNA, KOSZAŁKA PATRYCJA, SEROCZYŃSKA BARBARA, BĄCZEK TOMASZ. Gel electrophoretic separation of proteins from cultured neuroendocrine tumor cell lines. Mol Med Rep 2014; 11:1407-15. [DOI: 10.3892/mmr.2014.2864] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 06/05/2014] [Indexed: 11/05/2022] Open
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Vincenti DC, Murray GI. The proteomics of formalin-fixed wax-embedded tissue. Clin Biochem 2013; 46:546-51. [DOI: 10.1016/j.clinbiochem.2012.10.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/06/2012] [Accepted: 10/01/2012] [Indexed: 01/16/2023]
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Murray GI. Has the proteome of formalin-fixed wax-embedded tissue been unlocked? Nephrol Dial Transplant 2012; 27:3395-8. [PMID: 22859788 DOI: 10.1093/ndt/gfs342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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O'Dwyer D, Ralton LD, O'Shea A, Murray GI. The proteomics of colorectal cancer: identification of a protein signature associated with prognosis. PLoS One 2011; 6:e27718. [PMID: 22125622 PMCID: PMC3220687 DOI: 10.1371/journal.pone.0027718] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 10/23/2011] [Indexed: 12/15/2022] Open
Abstract
Colorectal cancer is one of the commonest types of cancer and there is requirement for the identification of prognostic biomarkers. In this study protein expression profiles have been established for colorectal cancer and normal colonic mucosa by proteomics using a combination of two dimensional gel electrophoresis with fresh frozen sections of paired Dukes B colorectal cancer and normal colorectal mucosa (n = 28), gel image analysis and high performance liquid chromatography–tandem mass spectrometry. Hierarchical cluster analysis and principal components analysis showed that the protein expression profiles of colorectal cancer and normal colonic mucosa clustered into distinct patterns of protein expression. Forty-five proteins were identified as showing at least 1.5 times increased expression in colorectal cancer and the identity of these proteins was confirmed by liquid chromatography–tandem mass spectrometry. Fifteen proteins that showed increased expression were validated by immunohistochemistry using a well characterised colorectal cancer tissue microarray containing 515 primary colorectal cancer, 224 lymph node metastasis and 50 normal colonic mucosal samples. The proteins that showed the greatest degree of overexpression in primary colorectal cancer compared with normal colonic mucosa were heat shock protein 60 (p<0.001), S100A9 (p<0.001) and translationally controlled tumour protein (p<0.001). Analysis of proteins individually identified 14-3-3β as a prognostic biomarker (χ2 = 6.218, p = 0.013, HR = 0.639, 95%CI 0.448–0.913). Hierarchical cluster analysis identified distinct phenotypes associated with survival and a two-protein signature consisting of 14-3-3β and aldehyde dehydrogenase 1 was identified as showing prognostic significance (χ2 = 7.306, p = 0.007, HR = 0.504, 95%CI 0.303–0.838) and that remained independently prognostic (p = 0.01, HR = 0.416, 95%CI 0.208–0.829) in a multivariate model.
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Affiliation(s)
- Donna O'Dwyer
- Department of Pathology, University of Aberdeen, Aberdeen, United Kingdom
| | - Lynda D. Ralton
- Department of Pathology, University of Aberdeen, Aberdeen, United Kingdom
| | - Aisling O'Shea
- Department of Pathology, University of Aberdeen, Aberdeen, United Kingdom
| | - Graeme I. Murray
- Department of Pathology, University of Aberdeen, Aberdeen, United Kingdom
- * E-mail:
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Analysis of differentially expressed proteins in colorectal cancer using hydroxyapatite column and SDS-PAGE. Appl Biochem Biotechnol 2011; 165:1211-24. [PMID: 21863284 DOI: 10.1007/s12010-011-9339-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Accepted: 08/10/2011] [Indexed: 12/18/2022]
Abstract
Limitation on two dimensional (2D) gel electrophoresis technique causes some proteins to be under presented, especially the extreme acidic, basic, or membrane proteins. To overcome the limitation of 2D electrophoresis, an analysis method was developed for identification of differentially expressed proteins in normal and cancerous colonic tissues using self-pack hydroxyapatite (HA) column. Normal and cancerous colon tissues were homogenized and proteins were extracted using sodium phosphate buffer at pH 6.8. Protein concentration was determined and the proteins were loaded unto the HA column. HA column reduced the complexity of proteins mixture by fractionating the proteins according to their ionic strength. Further protein separation was accomplished by a simple and cost effective sodium dodecyl sulfate-polyacrylamide gel electrophoresis method. The protein bands were subjected to in-gel digestion and protein analysis was performed using electrospray ionization (ESI) ion trap mass spectrometer. There were 17 upregulated proteins and seven downregulated proteins detected with significant differential expression. Some of these proteins were low abundant proteins or proteins with extreme pH that were usually under presented in 2D gel analysis. We have identified brain mitochondrial carrier protein 1, T-cell surface glycoprotein CD1a, SOSS complex subunit B2, and Protein Jade 1 which were previously not detected in 2D gel analysis method.
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Ralton LD, Murray GI. The use of formalin fixed wax embedded tissue for proteomic analysis: Table 1. J Clin Pathol 2011; 64:297-302. [DOI: 10.1136/jcp.2010.086835] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The potential of proteomic approaches to elucidate disease pathogenesis and biomarker discovery is increasingly being recognised. These studies are usually based on the use of fresh tissue samples. Problems in obtaining and storing fresh frozen samples, especially either for the investigation of rare diseases or for the study of microscopic disease foci, have led to the investigation of the possible use of formalin fixed wax embedded tissue for proteomic biomarker detection Overcoming problems with protein cross-linking associated with formalin fixation of tissues, especially by using heat-mediated retrieval techniques combined with highly sensitive methods for protein separation and identification are now emerging, giving promise to the use of formalin fixed wax embedded tissues for proteomic analysis. Formalin fixed wax embedded tissues, together with their associated clinical and pathological information outcome may provide significant potential opportunities for proteomics research. Such studies of formalin fixed wax embedded tissue will allow access to already acquired clinical tissue samples which can be readily correlated with clinical, pathological and outcome data. It also provides access to rare types of tissue/diseases that would be either difficult to collect prospectively in a timely manner or are unlikely to be available as fresh samples. The purpose of this review is to provide an overview of the issues associated with the use of formalin fixed wax embedded tissues for proteomics.
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MacAleese L, Stauber J, Heeren RMA. Perspectives for imaging mass spectrometry in the proteomics landscape. Proteomics 2009; 9:819-34. [PMID: 19212956 DOI: 10.1002/pmic.200800363] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A number of techniques are used in the field of proteomics that can be combined to get the most molecular information from a specific biological sample, fluid or tissue. Imaging techniques are often used to obtain local information from tissue samples. However, imaging experiments are often staining experiments, which rely on specific or aspecific interactions between fluorescent markers and pre-defined (families of) peptide or protein. Therefore, imaging is often used as a screening or validation tool for the local presence of proteins that have been identified by other means. Imaging mass spectrometry (IMS) combines the advantages of MS and microscopy in a single experiment. It is a technique that does not require any labeling of the analytes and provides a high multiplexing capability combined with the potential for analyte identification. It enables simultaneous detection of potentially all peptides and proteins present at a tissue surface and is used for the determination and identification of tissue-specific disease markers. The workflows of IMS experiments closely resemble those of conventional proteomics. In this review, we describe IMS experiments step-by-step to position and evaluate the role of IMS in a comparative proteomics landscape. We illustrate in a concise review that IMS is a true discovery oriented tool for proteomics that seamlessly integrates in conventional proteomics workflows and can be perceived as either an alternative or complementary proteomics technique.
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Affiliation(s)
- Luke MacAleese
- FOM Institute for Atomic and Molecular Physics, Amsterdam, The Netherlands
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Araki K, Mikami T, Yoshida T, Kikuchi M, Sato Y, Oh-ishi M, Kodera Y, Maeda T, Okayasu I. High expression of HSP47 in ulcerative colitis-associated carcinomas: proteomic approach. Br J Cancer 2009; 101:492-7. [PMID: 19603022 PMCID: PMC2720226 DOI: 10.1038/sj.bjc.6605163] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is a chronic relapsing inflammatory bowel disease, known to be associated with a markedly increased risk of colorectal carcinoma development. METHODS Using proteomic analysis with two-dimensional gel electrophoresis and mass spectrometry, differentially expressed proteins were assessed between UC-associated cancer and sporadic colon cancer cell lines. Western blot and immunostaining were performed for confirming the expression. RESULTS Heat-shock protein of 47 kDa (HSP47) was identified as one of the proteins expressed more highly in UC-associated cancer cell lines, and an immunohistochemical examination confirmed significantly higher levels of HSP47 in UC-associated colon cancers than in sporadic counterparts, the expression increasing with a progression of neoplastic lesions. Heat-shock protein of 47 kDa was further found to be coexpressed with type I collagen in the cytoplasm, and both HSP47 and type I collagen were released from cultured cells into the culture medium. CONCLUSION These results suggest that overexpression of HSP47 is a unique characteristic of UC-associated carcinoma related to type I collagen synthesis, with possible clinical applications.
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Affiliation(s)
- K Araki
- Department of Cellular and Histo-pathology, Kitasato University Postgraduate School of Medical Sciences, Sagamihara, Kanagawa, Japan.
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12
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Drabik A, Bierczynska-Krzysik A, Bodzon-Kulakowska A, Suder P, Kotlinska J, Silberring J. Proteomics in neurosciences. MASS SPECTROMETRY REVIEWS 2007; 26:432-50. [PMID: 17405153 DOI: 10.1002/mas.20131] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
This review provides an outline of the most important proteomic applications in the study of neurodegenerative disorders including Alzheimer's (AD), Parkinson's (PD), Huntington's (HD), and prion diseases, and also discusses advances in cancer and addiction. One of the scopes is to illustrate the potential of proteomics in the biomarkers discovery of these diseases. Finally, this article comments the advantages and drawbacks of the most commonly used techniques and methods for samples preparation.
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Affiliation(s)
- Anna Drabik
- Faculty of Chemistry and Regional Laboratory, Jagiellonian University, Krakow, Poland
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Coghlin C, Carpenter B, Dundas SR, Lawrie LC, Telfer C, Murray GI. Characterization and over-expression of chaperonin t-complex proteins in colorectal cancer. J Pathol 2006; 210:351-7. [PMID: 16981251 DOI: 10.1002/path.2056] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The chaperonins are key molecular complexes, which are essential in the folding of proteins to produce stable and functionally competent protein conformations. One member of the chaperonin group of proteins is TCP1 (chaperonin containing t-complex polypeptide 1, or CCT), but little is known about this protein in tumours. In this study, we used comparative proteomic analysis to show that t-complex protein subunits TCP1 beta and TCP1 epsilon are over-expressed in colorectal adenocarcinomas. Monoclonal antibodies to these proteins were developed and the expression and cellular localization of these two proteins in colorectal cancer were analysed by immunohistochemistry on a colorectal cancer tissue microarray. In colorectal cancer, TCP1 beta cellular localization was exclusively cytoplasmic, whereas TCP1 epsilon staining was seen in both the nucleus and the cytoplasm. Both cytoplasmic TCP1 beta and cytoplasmic TCP1 epsilon were significantly over-expressed (p < 0.001 for each protein) in primary colorectal cancer and also showed increased expression with advancing Dukes' stage (p = 0.018 for TCP1 beta and p = 0.045 for TCP1 epsilon). A trend was also identified between over-expression of cytoplasmic TCP1 beta and reduced patient survival (p = 0.05). These results show that both TCP1 beta and TCP1 epsilon are over-expressed in colorectal cancer and indicate a role for TCP1 beta and TCP1 epsilon in colorectal cancer progression.
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Affiliation(s)
- C Coghlin
- Department of Pathology, University of Aberdeen, Aberdeen, UK.
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Miles AK, Matharoo-Ball B, Li G, Ahmad M, Rees RC. The identification of human tumour antigens: Current status and future developments. Cancer Immunol Immunother 2006; 55:996-1003. [PMID: 16408215 PMCID: PMC11029826 DOI: 10.1007/s00262-005-0115-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Accepted: 12/10/2005] [Indexed: 11/25/2022]
Abstract
The biggest challenge facing us today in cancer control and prevention is the identification of novel biomarkers for detection and improved therapeutic interventions to reduce mortality and morbidity rates. Biomarkers are important indicators to inform us of the physiological state of the cell at a specific time. It is now clear that malignant transformation occurs by changes in cellular DNA and protein expression with subsequent clonal proliferation of the altered cells. The affected genes and their expressed protein products or biomarkers are those involved in the normal growth and maintenance of the cancerous cells. These biomarkers could prove pivotal for the identification of early cancer and people at risk of developing cancer. Altered proteins or changes in gene expression in malignant cells may lead to the expression of tumour antigens recognised by host immune system. In this review we discuss current research into the molecular technologies making possible the global genomic-wide analysis of changes in DNA (genotyping), RNA expression (transcriptomics) and protein expression (proteomics) that have accelerated the rate of new biomarker/tumour antigen discovery. To gain a comprehensive understanding of the physiology and pathophysiology of cancer an approach that harmoniously integrates the various 'omic' platforms are key to unraveling the complexity 'needle-in-a-haystack' quality of biomarker/tumour antigen discovery.
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Affiliation(s)
- Amanda K. Miles
- School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Clifton, NG11 8NS Nottingham, UK
| | - Balwir Matharoo-Ball
- School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Clifton, NG11 8NS Nottingham, UK
| | - Geng Li
- School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Clifton, NG11 8NS Nottingham, UK
| | - Murrium Ahmad
- School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Clifton, NG11 8NS Nottingham, UK
| | - Robert C. Rees
- School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Clifton, NG11 8NS Nottingham, UK
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Cobb JP. Fundamentals of surgical research course: functional genomics. J Surg Res 2005; 128:194-8. [PMID: 16154144 DOI: 10.1016/j.jss.2005.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2005] [Revised: 07/01/2005] [Accepted: 07/01/2005] [Indexed: 11/18/2022]
Affiliation(s)
- J Perren Cobb
- Cellular Injury and Adaptation Laboratory, Department of Surgery, Washington University in St. Louis, St. Louis, MO 63110, USA.
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Mocellin S, Provenzano M, Rossi CR, Pilati P, Nitti D, Lise M. DNA array-based gene profiling: from surgical specimen to the molecular portrait of cancer. Ann Surg 2005; 241:16-26. [PMID: 15621987 PMCID: PMC1356842 DOI: 10.1097/01.sla.0000150157.83537.53] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Cancer is a heterogeneous disease in most respects, including its cellularity, different genetic alterations, and diverse clinical behaviors. Traditional molecular analyses are reductionist, assessing only 1 or a few genes at a time, thus working with a biologic model too specific and limited to confront a process whose clinical outcome is likely to be governed by the combined influence of many genes. The potential of functional genomics is enormous, because for each experiment, thousands of relevant observations can be made simultaneously. Accordingly, DNA array, like other high-throughput technologies, might catalyze and ultimately accelerate the development of knowledge in tumor cell biology. Although in its infancy, the implementation of DNA array technology in cancer research has already provided investigators with novel data and intriguing new hypotheses on the molecular cascade leading to carcinogenesis, tumor aggressiveness, and sensitivity to antiblastic agents. Given the revolutionary implications that the use of this technology might have in the clinical management of patients with cancer, principles of DNA array-based tumor gene profiling need to be clearly understood for the data to be correctly interpreted and appreciated. In the present work, we discuss the technical features characterizing this powerful laboratory tool and review the applications so far described in the field of oncology.
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Affiliation(s)
- Simone Mocellin
- Surgery Branch, Department of Oncological and Surgical Sciences, University of Padova, Italy.
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Abstract
Proteomics, the global analysis of expressed cellular proteins, provides powerful tools for the detailed comparison of proteins from normal and neoplastic tissue. In particular, cancer cell culture models are suited for applying proteomics techniques, such as two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) and mass spectrometry, to identify specific protein expression profiles and/or proteins that may be associated with a defined phenotype of the cancer cells. As an instance of such an application of proteomics techniques, the detailed proteome analyses of different drug-resistant and thermoresistant cancer cell lines will be discussed. Finally, the potential roles of newly identified factors in a distinct biological mechanism have to be proven by functional studies. This experimental validation strategy will be discussed for two different factors identified by 2D-PAGE analyses of drug-resistant carcinoma cell lines, the "transporter associated with antigen presentation 1" (TAP1) and 14-3-3sigma.
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Affiliation(s)
- Hermann Lage
- Humboldt University Berlin, Charité Campus Mitte, Institute of Pathology, Schumannstr. 20121, D-10117 Berlin, Germany.
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Abstract
Traditional cancer diagnostic techniques include assessment of histologic appearance, identification of specific tumor subtypes, tumor grading, assessment of lymph node status, and presence of metastasis. These are useful for initial evaluation, but are limited in their ability to predict response to treatment and/or risk of experiencing adverse events to particular treatments. Recently, there has been considerable progress in molecular diagnostics in this area. Using molecular-based technologies, it is now possible to identify some patients with an inherited risk of developing breast cancer, and to more accurately assess the prognosis of those who already have developed the disease. Various techniques are also available or under investigation to help select patients who are most likely to respond to certain types of treatment. At present, this includes diagnostic tests to identify single tumor markers for which specific therapies are available, such as estrogen receptor and HER2. Diagnostic systems that allow simultaneous assessment of multiple markers, such as DNA microarrays and proteomics, are currently being validated. The use of these systems will allow further development of customized therapies directed toward the particular molecular defects in a given cancer.
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Wang KJ, Wang RT, Zhang JZ. Identification of tumor markers using two-dimensional electrophoresis in gastric carcinoma. World J Gastroenterol 2004; 10:2179-83. [PMID: 15259061 PMCID: PMC4724961 DOI: 10.3748/wjg.v10.i15.2179] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
AIM: To study the differential expression of proteins in normal and cancerous gastric tissues, and further identify new molecular markers for diagnosis and prognosis of gastric carcinoma, as well as develop new therapeutic targets of the disease.
METHODS: Matched pairs of tissues from 6 gastric cancer patients were analyzed for their two-dimensional electrophoresis (2DE) profiles. Soluble fraction proteins from human normal and cancerous gastric tissue were separated in the first dimension by isoelectric focusing on immobilized pH gradient (IPG, pH3-10) strips, and by 125 g/L sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) in the second dimension with silver nitrate staining. Protein differential expression was analyzed by use of image analysis software to find out candidates for gastric cancer-associated proteins.
RESULTS: Nine protein spots overexpressed in tumor tissues as compared with noncancerous regions. In the next step, 9 tumor-specific spots were cut off from Coomassie Brilliant Blue staining gels, digested in gel with L-1-tosylamide-2-phenylethyl chloromethyl ketone (TPCK)-trypsin. Protein identification was done by peptide mass fingerprinting with matrix assisted laser desorption/ ionization-time of flight-mass spectrometry (MALDI-TOF-MS). In total, 5 tumor-specific protein spots corresponding to 5 different polypeptide chains were identified, including annexin V, carbonic anhydrase, prohibitin, fibrin beta and fibrinogen fragment D. Among these 5 spots, the potential significance of the differential expressions is discussed.
CONCLUSION: Differential expression analysis of proteomes may be useful for the development of new molecular markers for diagnosis and prognosis of gastric carcinoma.
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Affiliation(s)
- Kai-Juan Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100083, China.
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Abstract
With the development of trauma systems, improved resuscitation, and organ system support, survival after severe injury is common, but is often complicated by nosocomial infection and organ failure. These complications are costly, and can lead to death or disability. Although much is known about the pathophysiology of post-traumatic nosocomial infection and organ failure, findings have been limited by our ability to generate and analyse large amounts of experimental and observational data. However, technological advances in nucleic acid and protein analysis, coupled with increased computational capacity, provide an opportunity to characterise the determinants of and the responses to injury and sepsis on a genome-wide scale. New large-scale collaborative efforts aim to investigate the genome for variation (gene polymorphisms), characterise multiple levels of the biological response to injury (transcriptome and proteome), and relate these to clinical phenotypes. In this article, we summarise recent findings and explore where promising new technologies might have the greatest potential for increasing our knowledge. It will now be important to determine how these recent technological advances can be used and integrated with our existing approaches, to reduce death, disability, and the economic consequences of trauma.
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Affiliation(s)
- J Perren Cobb
- Cellular Injury and Adaptation Laboratory, Department of Surgery, Washington University in St Louis, St Louis, Missouri 63110, USA.
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Lawrie LC, Dundas SR, Curran S, Murray GI. Liver fatty acid binding protein expression in colorectal neoplasia. Br J Cancer 2004; 90:1955-60. [PMID: 15138477 PMCID: PMC2409459 DOI: 10.1038/sj.bjc.6601828] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Liver fatty acid binding protein is a member of the fatty acid binding group of proteins that are involved in the intracellular transport of bioactive fatty acids and participate in intracellular signalling pathways, cell growth and differentiation. In this study we have used proteomics and immunohistochemistry to determine the changes in liver fatty acid binding protein in colorectal neoplasia. Comparative proteome analysis of paired samples colorectal cancer and normal colon identified consistent loss of liver fatty acid binding protein (L-FABP) in colorectal cancer compared with normal colon. To identify the changes in liver fatty acid binding protein expression during colorectal cancer development and progression the cell-specific expression of L-FABP was determined by immunohistochemistry in a series of colorectal cancers and colorectal adenomas. Decreased L-FABP immunoreactivity was significantly associated with poorly differentiated cancers (P<0.001). In colorectal adenomas there was a significant trend towards decreased staining of L-FABP in the larger adenomas (P<0.001). There was consistent L-FABP immunostaining of normal surface colonocytes. This study demonstrates that loss of L-FABP occurs at the adenoma stage of colorectal tumour development and also indicates that L-FABP is a marker of colorectal cancer differentiation.
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Affiliation(s)
- L C Lawrie
- Department of Pathology, University of Aberdeen, Foresterhill, Aberdeen, Foresterhill AB25 2ZD, UK
| | - S R Dundas
- Department of Pathology, University of Aberdeen, Foresterhill, Aberdeen, Foresterhill AB25 2ZD, UK
| | - S Curran
- Department of Pathology, University of Aberdeen, Foresterhill, Aberdeen, Foresterhill AB25 2ZD, UK
| | - G I Murray
- Department of Pathology, University of Aberdeen, Foresterhill, Aberdeen, Foresterhill AB25 2ZD, UK
- Department of Pathology, University of Aberdeen, Foresterhill, Aberdeen, Foresterhill AB25 2ZD, UK. E-mail:
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Reymond MA, Steinert R, Kähne T, Sagynaliev E, Allal AS, Lippert H. Expression and functional proteomics studies in colorectal cancer. Pathol Res Pract 2004; 200:119-27. [PMID: 15237920 DOI: 10.1016/j.prp.2004.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cell dysfunction results from multiple rather than from single gene interactions in the majority of colorectal cancers (CRC). Proteins, not mRNA, are the functional molecules in the cell, and the relationship between gene expression measured at the mRNA level and the corresponding protein level is not linear. Current proteomics tools allow for the determination of post-translational modifications, and hence the presence of protein isoforms--some of them being disease-relevant. Thus, proteomics approaches are a welcome complement to traditional genetic approaches. In CRC, expression proteomics studies were carried out with colorectal cell lines, whole tissue biopsies, and purified epithelial cells. For CRC, two-dimensional electrophoresis reference maps, protein, and membrane protein databases are available on the internet. Functional proteomics studies have been performed to better understand signaling pathways, to characterize the molecular targets of novel drugs, and to identify tumor-associated antigens in CRC. The increasing use of proteomics technologies, when addressing clinical problems, will accelerate the evolution towards personalized medicine in CRC.
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Affiliation(s)
- Marc A Reymond
- Department of Surgery, University of Magdeburg, Leipziger Strasse 44, 39120 Magdeburg, Germany.
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Weinar M, Alexander C, Seely GA. Cancer and Genetics: Part III. Oncol Nurs Forum 2004. [DOI: 10.1188/04.onf.195-196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Zhu K, Kim J, Yoo C, Miller FR, Lubman DM. High Sequence Coverage of Proteins Isolated from Liquid Separations of Breast Cancer Cells Using Capillary Electrophoresis-Time-of-Flight MS and MALDI-TOF MS Mapping. Anal Chem 2003; 75:6209-17. [PMID: 14616003 DOI: 10.1021/ac0346454] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A method has been developed for high sequence coverage analysis of proteins isolated from breast cancer cell lines. Intact proteins are isolated using multidimensional liquid-phase separations that permit the collection of individual protein fractions. Protein digests are then analyzed by both matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) peptide mass fingerprinting and by capillary electrophoresis-electrospray ionization (CE-ESI)-TOF MS peptide mapping. These methods can be readily interfaced to the relatively clean proteins resulting from liquid-phase fractionation of cell lysates with little sample preparation. Using combined sequence information provided by both mapping methods, 100% sequence coverage is often obtained for smaller proteins, while for larger proteins up to 75 kDa, over 90% coverage can be obtained. Furthermore, an accurate intact protein MW value (within 150 ppm) can be obtained from ESI-TOF MS. The intact MW together with high coverage sequence information provides accurate identification. More notably the high sequence coverage of CE-ESI-TOF MS together with the MS/MS information provided by the ion trap/reTOF MS elucidates posttranslational modifications, sequence changes, truncations, and isoforms that may otherwise go undetected when standard MALDI-MS peptide fingerprinting is used. This capability is critical in the analysis of human cancer cells where large numbers of expressed proteins are modified, and these modifications may play an important role in the cancer process.
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Affiliation(s)
- Kan Zhu
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, USA
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Marengo E, Robotti E, Righetti PG, Antonucci F. New approach based on fuzzy logic and principal component analysis for the classification of two-dimensional maps in health and disease. Application to lymphomas. J Chromatogr A 2003; 1004:13-28. [PMID: 12929957 DOI: 10.1016/s0021-9673(03)00852-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two-dimensional (2D) electrophoresis is the most wide spread technique for the separation of proteins in biological systems. This technique produces 2D maps of high complexity, which creates difficulties in the comparison of different samples. The method proposed in this paper for the comparison of different 2D maps can be summarised in four steps: (a) digitalisation of the image; (b) fuzzyfication of the digitalised map in order to consider the variability of the two-dimensional electrophoretic separation; (c) decoding by principal component analysis of the previously obtained fuzzy maps, in order to reduce the system dimensionality; (d) classification analysis (linear discriminant analysis), in order to separate the samples contained in the dataset according to the classes present in said dataset. This method was applied to a dataset constituted by eight samples: four belonging to healthy human lymph-nodes and four deriving from non-Hodgkin lymphomas. The amount of fuzzyfication of the original map is governed by the sigma parameter. The larger the value, the more fuzzy theresulting transformed map. The effect of the fuzzyfication parameter was investigated, the optimal results being obtained for sigma = 1.75 and 2.25. Principal component analysis and linear discriminant analysis allowed the separation of the two classes of samples without any misclassification.
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Affiliation(s)
- Emilio Marengo
- Dipartimento di Scienze e Tecnologie Avanzate, Università del Piemonte Orientale, 15100 Alessandria, Italy.
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Pleat J, Dunkin C, Zitzmann N. Plastic surgery beyond the human genome. Plast Reconstr Surg 2003; 111:2479-80. [PMID: 12794508 DOI: 10.1097/01.prs.0000063120.43729.42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bertucci F, Viens P, Tagett R, Nguyen C, Houlgatte R, Birnbaum D. DNA arrays in clinical oncology: promises and challenges. J Transl Med 2003; 83:305-16. [PMID: 12649332 DOI: 10.1097/01.lab.0000059936.28369.19] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Cancer is a complex genetic disease characterized by the accumulation of multiple molecular alterations. Current diagnostic and prognostic classifications, based on clinical and pathologic factors, are insufficient to reflect the whole clinical heterogeneity of tumors. Most current anticancer agents do not differentiate between cancerous and normal cells, leading sometimes to disastrous adverse effects. Recent advances in human genome research and high-throughput molecular technologies make it possible finally to tackle the molecular complexity of malignant tumors. With DNA array technology, mRNA expression levels of thousands of genes can be measured simultaneously in a single assay. Oncology is benefiting on multiple fronts. Gene expression profiles are revealing new biologically and clinically relevant tumor subclasses previously indistinguishable and are identifying new diagnostic and prognostic biomarkers as well as new potential therapeutic targets. Here, we review the technology and present clinical applications for which promising results have been obtained. Finally, we discuss issues that must be resolved in the near future to allow DNA arrays to translate into benefits for cancer patients.
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Affiliation(s)
- François Bertucci
- Department of Molecular Oncology (FB, DB), Institut Paoli-Calmettes, Marseille, France
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Kleibeuker JH, Kooi H, Lamers CB. Effect of histamine H2-receptor stimulation on bombesin- and peptone-stimulated gastrin release in man. Dig Dis Sci 1986; 31:1095-9. [PMID: 3757724 DOI: 10.1007/bf01300263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
This study was undertaken to determine whether histamine H2-receptors are involved in the regulation of gastrin secretion in man. Since previous studies on the effect of histamine H2-receptor blockade on gastrin release are conflicting, we have studied the effect of histamine infusion (130 nmol/kg/hr) with simultaneous H1-receptor blockade on gastrin release in healthy male subjects. Intragastric pH was maintained at 4.5 by continuous intragastric titration during all studies. Histamine did not affect gastrin release stimulated by infusion of bombesin (90 pmol/kg/hr) or by a peptone meal. Integrated gastrin secretion during bombesin plus histamine was 767 +/- 151 pmol X min/liter (+/- SEM), compared to 757 +/- 144 pmol X min/liter during bombesin plus saline (not significant), whereas integrated meal-stimulated gastrin release was 1666 +/- 456 pmol X min/liter during histamine and 1856 +/- 492 pmol X min/liter during saline. It is concluded that histamine H2-receptors do not seem to be involved in the regulation of gastrin secretion in man.
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Boulos PB, Whitfield PF, Hobsley M. Insulin- and histamine-stimulated secretion in relation to recurrence of duodenal ulceration after vagotomy. Br J Surg 1984; 71:418-22. [PMID: 6372937 DOI: 10.1002/bjs.1800710604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Gastric secretion after vagotomy for duodenal ulcer in response to a single injection of insulin and in response to a histamine infusion has been compared in 25 patients with and 56 patients without recurrent duodenal ulceration proven by endoscopy. The lower 95 per cent tolerance limits of the pre-operative ranges of secretion to either insulin or histamine stimulation measured in 81 unoperated patients provided thresholds that separated postvagotomy patients with recurrent ulceration and those without. Neither the ratios, nor the regression line, between secretion in response to each secretagogue provided similar discrimination. In a group of 43 patients who had gastric secretion studies before and after vagotomy the reductions in secretion to below the established 95 per cent tolerance limits of secretion were respectively 60 and 80 per cent of their pre-operative insulin- and histamine-stimulated secretion. The percentage reductions however failed to differentiate asymptomatic patients from patients with recurrent ulceration. It appears therefore that, irrespective of the pre-operative level or of the magnitude of the reduction of secretion, a vagotomy to be adequate must achieve a reduction of secretion to below a threshold level.
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31
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Ind PW, Brown MJ, Lhoste FJ, Macquin I, Dollery CT. Concentration effect relationships of infused histamine in normal volunteers. AGENTS AND ACTIONS 1982; 12:12-6. [PMID: 7080947 DOI: 10.1007/bf01965099] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Histamine was infused in six normal volunteers at rates of 16, 32, 64 and 96 ng/kg/min increasing at 5-min intervals followed by 128 ng/kg/min for 45 min. Heart rate increased, diastolic blood pressure decreased and skin temperature increased in a dose-dependent fashion. Mean heart rate increased by 15.6 +/- 5.7 beats/min, mean diastolic pressure fell by 8.8 +/- e.2 mmHg and mean skin temperature increased by 1.2 +/- 0.3 degrees C at the highest infusion rate. Mean plasma histamine rose from a basal level of 0.20 +/- 0.03 ng/ml to 1.97 +/- 0.25 ng/ml at the end of the highest infusion rate. The threshold infusion rate for physiological effects was 64-96 ng/kg/min corresponding to 0.77-0.97 ng/ml. Salivary flow was stimulated by 21% after 30 min at the highest dose infusion (P = 0.05). Plasma adrenaline increased 132% but plasma noradrenaline was unchanged. There was a linear decline in heart rate after terminating the histamine infusion with a half time of 82 sec. The half life of infused histamine in the plasma was 102 sec. The clearance of histamine from the plasma was 6.1 %/- 0.2 l/min or 83 ml/kg/min. These concentration effect relationships in normals throw doubt on some of the high endogenous plasma histamine values in the literature.
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32
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Whitfield PF, Hobsley M. A standardized technique for the performance of accurate gastric secretion studies. AGENTS AND ACTIONS 1979; 9:327-32. [PMID: 517329 DOI: 10.1007/bf01970656] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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33
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Fiddian-Green RG, Parkin JV, Faber RG, Russell RC, Whitfield PF, Hobsley M. The quantification in human gastric juice of duodenogastric reflux by sodium output and by bile-labelling using indocyanine green. KLINISCHE WOCHENSCHRIFT 1979; 57:815-24. [PMID: 502348 DOI: 10.1007/bf01477986] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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34
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35
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Read RC, Hall WH. Tests of Gastric Function after Gastric Surgery. Prim Care 1975. [DOI: 10.1016/s0095-4543(21)00049-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Rosato EF, Mayer LJ, Arenschield S, Rosato FE, Brooks FP. Acid secretory responses to histamine and pentagastrin in conscious monkeys. THE AMERICAN JOURNAL OF DIGESTIVE DISEASES 1974; 19:1111-5. [PMID: 4440663 DOI: 10.1007/bf01076145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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37
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Langer L, Walan A. Gastric acid secretory response to pentagastrin infusion in diabetes mellitus. ACTA MEDICA SCANDINAVICA 1973; 1-2:117-21. [PMID: 4727244 DOI: 10.1111/j.0954-6820.1973.tb19415.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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38
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Hassan MA, Hobsley M. Maximal gastric secretion in patients with chronic airway obstruction. Br J Surg 1973; 60:300-2. [PMID: 4700231 DOI: 10.1002/bjs.1800600413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Abstract
It has been suggested that patients with chronic obstructive chest disease have greater maximal gastric secretion than normal subjects. This problem was studied in 30 subjects using the histamine infusion test with phenol red as a marker to correct for pyloric loss. Clinical, radiological, and physiological criteria were used to define two groups: (1) 13 subjects with normal chests; (2) 14 subjects with unequivocal chronic airway obstruction.
The two groups did not differ significantly in maximal gastric secretion, and this conclusion was not altered by taking stature into account because stature was statistically comparable in the two groups. However, age was significantly different and correction of the secretory data for the diminution of maximal secretion with age improved the correspondence between the groups.
The failure to take stature and age into account may be responsible for conflicting evidence in the past.
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Hassan MA, Hobsley M. The aurate assessment of aximal gastric secretion in control subjects and patients with duodenal ulcer. Br J Surg 1971; 58:171-9. [PMID: 5548157 DOI: 10.1002/bjs.1800580305] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Abstract
Maximal gastric secretion was studied in 34 control subjects and 29 patients with duodenal ulcer using the histamine-infusion test with the addition of an inert marker, phenol red, to correct for pyloric losses of gastric secretion.
In the control group, statistically significant correlations were found between maximal gastric secretion and almost all the indices of body stature. Correction for pyloric loss improved all the correlations and raised those correlation coefficients which were not significant to levels of confidence of 95 percent or more.
The validity of calculation of lean body mass from height and weight was checked by the estimation of total body potassium in 26 subjects.
When lean body mass was taken into account it was confirmed that maximal gastric secretion decreased with age, but the sex difference in maximal gastric secretion was no longer statistically significant.
In the duodenal ulcer group, maximal gastric secretion was also significantly correlated with stature, though not with age. It is, therefore, proposed that stature should be taken into account when defining hypersecretion.
As expected, patients with duodenal ulcer produced as a group significantly higher levels of maximal gastric secretion than did control subjects, but the effect appeared to be due to a minority of patients with hypersecretion.
Patients with a history of less than 4 years secreted proportionately less gastric juice than those with a longer history. This finding raises the possibility that gastric hypersecretion is a result of duodenal ulceration rather than a cause.
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Kwong NK, Brown BH, Whittaker GE, Duthie HL. Response of the electrical activity, motor activity and acid secretion of the human stomach to pentagastrin and histamine stimulation. Scand J Gastroenterol 1971; 6:145-53. [PMID: 5572893 DOI: 10.3109/00365527109180684] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Scott JM, Weir DG. The origin of iron chelating factors in gastric juice. Ir J Med Sci 1969; 8:553-8. [PMID: 5370509 DOI: 10.1007/bf02955467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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43
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Mason MC, Giles GR, Graham NG, Clark CG, Goligher JC. An early assessment of selective and total vagotomy. Br J Surg 1968; 55:677-80. [PMID: 4877732 DOI: 10.1002/bjs.1800550908] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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44
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45
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George JD. Gastric acidity and motility. THE AMERICAN JOURNAL OF DIGESTIVE DISEASES 1968; 13:376-83. [PMID: 5643644 DOI: 10.1007/bf02233017] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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46
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47
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48
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49
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50
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Dotevall G, Walan A. Gastric secretion of acid after intravenous infusion of histamine in large doses. ACTA MEDICA SCANDINAVICA 1967; 181:439-44. [PMID: 6024858 DOI: 10.1111/j.0954-6820.1967.tb07261.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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