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Park SR, Yoon YH, Kim NH, Kwon JW, Suk KS, Kim HS, Moon SH, Park SY, Lee BH, Park JO. Effect of saline irrigation temperature difference on postoperative acute pain and hypothermia during biportal endoscopic spine surgery. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024:10.1007/s00586-024-08322-6. [PMID: 38801433 DOI: 10.1007/s00586-024-08322-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 05/02/2024] [Accepted: 05/21/2024] [Indexed: 05/29/2024]
Abstract
BACKGROUND Recently, enhanced recovery after surgery (ERAS) protocols have attracted attention; they emphasize on avoiding intraoperative hypothermia while performing lumbar fusion surgery. However, none of the studies have reported the protocol for determining the temperature of saline irrigation during biportal endoscopic spine surgery (BESS) procedure. This study evaluated the effectiveness of warm saline irrigation during BESS in acute postoperative pain and inflammatory reactions. MATERIALS AND METHODS Fifty-five patients who underwent BESS procedure were retrospectively analyzed for the incidence of perioperative hypothermia (< 36oC), postoperative inflammatory factors (white blood cells (WBC), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), interleukin-6 (IL-6), serum amyloid A (SAA)), and clinical outcomes (back visual analog scale (VAS) score, postoperative shivering). The patients were divided into the warm and cold saline irrigation groups. RESULTS Hemoglobin, WBC, ESR, creatine kinase, and creatine kinase-muscle brain levels did not significantly differ between the warm and cold saline groups. The mean CRP, IL-6, and SAA levels were significantly higher in the cold saline group than in the warm saline group (p = 0.0058, 0.0028, and 0.0246, respectively); back VAS scores were also higher with a statistically significant difference until two days postoperatively (p < 0.001). During the entire procedure, the body temperature was significantly lower in the cold saline irrigation group, but the hypothermia incidence rate significantly differed 30 min after the operation was started. CONCLUSIONS Using warm saline irrigation during BESS is beneficial for early recovery after surgery, as it is associated with reduced postoperative pain and complication rates.
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Affiliation(s)
- Sub-Ri Park
- Department of Orthopedic Surgery, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Gyeonggi- do, 16988, Republic of Korea
| | - Young-Hyun Yoon
- Department of Orthopedic Surgery, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Gyeonggi- do, 16988, Republic of Korea
| | - Nam-Hoo Kim
- Department of Orthopedic Surgery, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Gyeonggi- do, 16988, Republic of Korea
| | - Ji-Won Kwon
- Department of Orthopedic Surgery, Gangnam Severance Hospital, Spine and Spinal Cord Institute, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
| | - Kyung-Soo Suk
- Department of Orthopedic Surgery, Gangnam Severance Hospital, Spine and Spinal Cord Institute, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
| | - Hak-Sun Kim
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Seong-Hwan Moon
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Si-Young Park
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Byung Ho Lee
- Department of Orthopedic Surgery, Gangnam Severance Hospital, Spine and Spinal Cord Institute, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
| | - Jin-Oh Park
- Department of Orthopedic Surgery, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Gyeonggi- do, 16988, Republic of Korea.
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Yang G, Li J, Zhang S, Ouyang H, Jiang C, Pan H. A flexible gradient lateral flow immunochromatographic assay for qualitative, semi-quantitative, and quantitative determination of serum amyloid A. J Immunol Methods 2023; 523:113574. [PMID: 37884205 DOI: 10.1016/j.jim.2023.113574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023]
Abstract
Serum amyloid A (SAA) is an acute-phase protein produced in response to inflammatory proteins during infections, inflammation, trauma, surgery, cancer, and other conditions. Early and accurate detection of SAA is necessary for diagnosis and monitoring of disease progression. To meet this need, we developed a gradient lateral flow immunoassay test strip using Au nanoparticles as signal reporters. The test strip has three test (T1, T2, and T3) lines with progressively decreasing concentrations of SAA antibody, enabling the determination of high, medium, and low concentrations of SAA in serum. The test strip results were analyzed using three distinct readout methods, each with different sensitivity, accuracy, and precision for SAA concentration measurements. Qualitative judgment is based on the color of the T1 line. Semi-quantitative assessment of SAA concentration is determined by the number of colored T-lines. Specifically, color development in T1 line alone indicates a concentration range of 10-50 μg/mL, while T1 and T2 lines together indicate a range of 50-100 μg/mL, and development in all three lines (T1, T2, and T3) indicates a concentration of >100 μg/mL. Quantitative analysis was performed using either smartphone imaging or image scanning with ImageJ software. By using a five-parameter logistic function, we found a strong correlation (R2 = 0.998) between the ratio of signal intensities of (T1 + T2 + T3) to the control (C) line and SAA concentrations ranging from 5 to 1000 μg/mL. At lower concentrations (0-100 μg/mL), we observed a proportional relationship between the value of (T1 + T2 + T3)/C and SAA concentration. The limit of detection for SAA was 9.33 ng/mL (or 6.53 μg/mL of SAA in undiluted serum samples) for the smartphone method and 3.06 ng/mL (or 2.14 μg/mL of SAA in undiluted serum samples) for the scanner method. The gradient test strip was highly consistent with a commercially available SAA immunochromatographic test strip when tested with real human serum samples. Passing-Bablok regression indicated that results obtained using the smartphone app and scanner methods of the gradient test strip were comparable to those obtained using the commercial test strip. The gradient test strip is flexible and adaptable, providing solutions for qualitative, semi-quantitative, and quantitative SAA measurements.
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Affiliation(s)
- Guangtian Yang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Jishun Li
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Shenglan Zhang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Huixiang Ouyang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Chunhai Jiang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Hongcheng Pan
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
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Alhalabi M, Alaa Eddin K, Abbas A. Therapeutic effects of biological treatments on AA amyloidosis associated with inflammatory bowel disease: a case report and literature review. Eur J Gastroenterol Hepatol 2023; 35:1298-1305. [PMID: 37724477 DOI: 10.1097/meg.0000000000002649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
AA amyloidosis is a rare and significant complication of long-term inflammation that can be caused by a variety of disorders, including inflammatory bowel disease, and is linked to an increased risk of morbidity and mortality. To date, there has been no effective direct treatment, and treatment aims at treating the underlying condition with potent immunosuppression to limit inflammatory activity and, as a result, switch off amyloidogenesis. Theoretically, biological treatment can control AA amyloidosis by inducing and maintaining inflammatory bowel disease remission and inhibiting the synthesis of Serum Amyloid A, which is an acute phase reactant and precursor protein of AA amyloidosis that accumulates in the organs. We report the first case of ustekinumab's therapeutic effect after infliximab's loss of response in AA amyloidosis associated with Crohn's disease. We also conducted a literature review of the therapeutic effect of biological treatment on AA amyloidosis.
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Affiliation(s)
- Marouf Alhalabi
- Gastroenterology Department of Damascus Hospital, M.D, Syrian Board in Gastroenterology
| | - Kamal Alaa Eddin
- Gastroenterology Department of Damascus Hospital, M.D, Syrian Board in Gastroenterology
| | - Ahmad Abbas
- Damascus Hospital, Gastroenterology Department of Damascus hospital, M.D, Syrian Board in Gastroenterology
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Wang Q, Xie Z, Wan N, Yang L, Jin Z, Jin F, Huang Z, Chen M, Wang H, Feng J. Potential biomarkers for diagnosis and disease evaluation of idiopathic pulmonary fibrosis. Chin Med J (Engl) 2023; 136:1278-1290. [PMID: 37130223 PMCID: PMC10309524 DOI: 10.1097/cm9.0000000000002171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Indexed: 05/04/2023] Open
Abstract
ABSTRACT Idiopathic pulmonary fibrosis (IPF) is a chronic progressive lung disease characterized by progressive lung fibrogenesis and histological features of usual interstitial pneumonia. IPF has a poor prognosis and presents a spectrum of disease courses ranging from slow evolving disease to rapid deterioration; thus, a differential diagnosis remains challenging. Several biomarkers have been identified to achieve a differential diagnosis; however, comprehensive reviews are lacking. This review summarizes over 100 biomarkers which can be divided into six categories according to their functions: differentially expressed biomarkers in the IPF compared to healthy controls; biomarkers distinguishing IPF from other types of interstitial lung disease; biomarkers differentiating acute exacerbation of IPF from stable disease; biomarkers predicting disease progression; biomarkers related to disease severity; and biomarkers related to treatment. Specimen used for the diagnosis of IPF included serum, bronchoalveolar lavage fluid, lung tissue, and sputum. IPF-specific biomarkers are of great clinical value for the differential diagnosis of IPF. Currently, the physiological measurements used to evaluate the occurrence of acute exacerbation, disease progression, and disease severity have limitations. Combining physiological measurements with biomarkers may increase the accuracy and sensitivity of diagnosis and disease evaluation of IPF. Most biomarkers described in this review are not routinely used in clinical practice. Future large-scale multicenter studies are required to design and validate suitable biomarker panels that have diagnostic utility for IPF.
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Affiliation(s)
- Qing Wang
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Zhaoliang Xie
- Respiratory Department of Sanming Yong’an General Hospital, Sanming, Fujian 366000, China
| | - Nansheng Wan
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Lei Yang
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhixian Jin
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Fang Jin
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhaoming Huang
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Min Chen
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Huiming Wang
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Jing Feng
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
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Cho J, Lee JH, Lee DH, Kim J, Uh Y. Performance Comparison of Procalcitonin, Delta Neutrophil Index, C-Reactive Protein, and Serum Amyloid A Levels in Patients with Hematologic Diseases. Diagnostics (Basel) 2023; 13:diagnostics13071213. [PMID: 37046430 PMCID: PMC10093706 DOI: 10.3390/diagnostics13071213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 03/21/2023] [Indexed: 04/14/2023] Open
Abstract
(1) Background: We compared the diagnostic and prognostic performance of serum amyloid A (SAA), procalcitonin (PCT), delta neutrophil index (DNI), and C-reactive protein (CRP) in patients with hematologic diseases; (2) Methods: We retrospectively collected the remaining serum samples from patients with hematologic diseases, analyzed their clinical data, and measured the levels of PCT, DNI, CRP, and SAA. Performances for infection diagnosis were evaluated using a receiver operating characteristic curve analysis, and 90-day mortality was analyzed using Kaplan-Meier estimation; (3) Results: The levels of all markers were significantly higher in the infected group (N = 27) than those in the uninfected group (N = 100) (p < 0.0001 for all markers). The areas under the curve for diagnosing infection for PCT, DNI, CRP, and SAA were 0.770, 0.817, 0.870, and 0.904, respectively. Increased PCT levels were associated with higher mortality (p = 0.0250); this association was not observed with other examined markers; (4) Conclusions: CRP and SAA exhibited greater discriminative power for infection than PCT. However, only PCT levels were positively associated with 90-day mortality. Herein, we evaluated the diagnostic performance of the four markers. Additional studies are needed to confirm the findings of the present study and validate the potential of these markers in clinical practice.
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Affiliation(s)
- Jooyoung Cho
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Jong-Han Lee
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Dong Hyun Lee
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Juwon Kim
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
- Center for Precision Medicine and Genomics, Wonju Severance Christian Hospital, Wonju 26426, Republic of Korea
| | - Young Uh
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
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Almusalami EM, Lockett A, Ferro A, Posner J. Serum amyloid A—A potential therapeutic target for hyper-inflammatory syndrome associated with COVID-19. Front Med (Lausanne) 2023; 10:1135695. [PMID: 37007776 PMCID: PMC10060655 DOI: 10.3389/fmed.2023.1135695] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
Serum amyloid-A (SAA) is associated with inflammatory disorders such as rheumatoid arthritis, Familial Mediterranean Fever, sarcoidosis, and vasculitis. There is accumulating evidence that SAA is a reliable biomarker for these autoinflammatory and rheumatic diseases and may contribute to their pathophysiology. Hyperinflammatory syndrome associated with COVID-19 is a complex interaction between infection and autoimmunity and elevation of SAA is strongly correlated with severity of the inflammation. In this review we highlight the involvement of SAA in these different inflammatory conditions, consider its potential role and discuss whether it could be a potential target for treatment of the hyperinflammatory state of COVID-19 with many potential advantages and fewer adverse effects. Additional studies linking SAA to the pathophysiology of COVID-19 hyper-inflammation and autoimmunity are needed to establish the causal relationship and the therapeutic potential of inhibitors of SAA activity.
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Affiliation(s)
- Eman M. Almusalami
- Centre for Pharmaceutical Medicine Research, King’s College London, London, United Kingdom
- *Correspondence: Eman M. Almusalami,
| | - Anthony Lockett
- Centre for Pharmaceutical Medicine Research, King’s College London, London, United Kingdom
| | - Albert Ferro
- Centre for Pharmaceutical Medicine Research, King’s College London, London, United Kingdom
- School of Cardiovascular and Metabolic Medicine and Sciences, British Heart Foundation Centre for Research Excellence, King’s College London, London, United Kingdom
| | - John Posner
- Centre for Pharmaceutical Medicine Research, King’s College London, London, United Kingdom
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Deng R, Chao X, Li H, Li X, Yang Z, Yu HZ. Smartphone-based microplate reader for high-throughput quantitation of disease markers in serum. Analyst 2023; 148:735-741. [PMID: 36533656 DOI: 10.1039/d2an01571d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein, a smartphone-based portable reader with integrated optics for standard microtiter plates (96 wells) has been designed and demonstrated for high-throughput quantitation of validated biomarkers in serum. The customized optical attachment was simply constructed with a convex lens and a light source, by which the transmitted light through a 96-well microtiter plate was converged for imaging with a smartphone, so that accurate and wide-range reading of the plate can be achieved. More importantly, relying on the digitized colorimetric analysis of the obtained images, concentrations of various biomarkers can be determined directly using the customized mobile app. A set of validated biomarkers for inflammation and infection, C-reactive protein (CRP), serum amyloid A (SAA), and procalcitonin (PCT) have been quantitated with this new system; both the response ranges and limits of detection meet the requirement of clinical tests. The consistency with the results obtained using a commercial microplate reader proves its reliability and precision, augments its potential as a point-of-care diagnostic device for on-site testing or resource-limited settings.
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Affiliation(s)
- Rong Deng
- College of Biomedical Engineering, Institute of Biomedical Precision Testing and Instrumentation, Taiyuan University of Technology, Yuci, Shanxi 030600, China.
| | - Xiaoxin Chao
- College of Biomedical Engineering, Institute of Biomedical Precision Testing and Instrumentation, Taiyuan University of Technology, Yuci, Shanxi 030600, China.
| | - Haiqin Li
- College of Biomedical Engineering, Institute of Biomedical Precision Testing and Instrumentation, Taiyuan University of Technology, Yuci, Shanxi 030600, China.
| | - Xiaochun Li
- College of Biomedical Engineering, Institute of Biomedical Precision Testing and Instrumentation, Taiyuan University of Technology, Yuci, Shanxi 030600, China.
| | - Zehua Yang
- Medicine Laboratory, First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030024, China.
| | - Hua-Zhong Yu
- College of Biomedical Engineering, Institute of Biomedical Precision Testing and Instrumentation, Taiyuan University of Technology, Yuci, Shanxi 030600, China. .,Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
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Jegorović B, Milinković N, Sarić Matutinović M, Šipetić Grujičić S, Ignjatović S. Comparison of the ELISA method with the nephelometric method for determination of serum amyloid A in patients with COVID 19. Scand J Clin Lab Invest 2023; 83:60-63. [PMID: 36448677 DOI: 10.1080/00365513.2022.2150983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
This study aimed to examine the agreement of the serum amyloid A (SAA) values determined using the ELISA test and the nephelometric automated method. This study included 80 serum samples obtained from patients with COVID-19. Samples were determined using ELISA and the nephelometric method. Wilcoxon signed ranks test showed a statistically significant difference in the calculated median values (Z = -2.432, p = 0.015). The correlation between methods was statistically significant (r = 0.603, p < 0.0001). Bland Altman analysis showed a bias of 56.6 mg/L and a relative bias of 7.4% between the methods. The results of this study indicate that further studies are needed that will examine the compliance between the ELISA and the nephelometric method for determining SAA, and the results must be carefully interpreted based on the method used.
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Affiliation(s)
- Boris Jegorović
- Clinic for Infectious and Tropical Diseases "Prof. dr Kosta Todorović", University Clinical Center of Serbia, Belgrade, Serbia
| | - Neda Milinković
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Marija Sarić Matutinović
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | | | - Svetlana Ignjatović
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia.,Center for Medical Biochemistry, University Clinical Center of Serbia, Belgrade, Serbia
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Salminen K, Fang JH, Wester N, Etula J, Eskola J, Kulmala S, Sun JJ. Electrochemical generation of hot electrons in fully aqueous solutions at tetrahedral amorphous carbon thin film electrodes and electrochemiluminescence immunoassay of serum amyloid A. ELECTROANAL 2022. [DOI: 10.1002/elan.202200227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sazpinar O, Gaspert A, Sidler D, Rechsteiner M, Mueller TF. Histologic and Molecular Patterns in Responders and Non-responders With Chronic-Active Antibody-Mediated Rejection in Kidney Transplants. Front Med (Lausanne) 2022; 9:820085. [PMID: 35573002 PMCID: PMC9099145 DOI: 10.3389/fmed.2022.820085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
IntroductionThere is no proven therapy for chronic-active antibody-mediated rejection (caABMR), the major cause of late kidney allograft failure. Histological and molecular patterns associated with possible therapy responsiveness are not known.MethodsBased on rigorous selection criteria this single center, retrospective study identified 16 out of 1027 consecutive kidney transplant biopsies taken between 2008 and 2016 with pure, unquestionable caABMR, without other pathologic features. The change in estimated GFR pre- and post-biopsy/treatment were utilized to differentiate subjects into responders and non-responders. Gene sets reflecting active immune processes of caABMR were defined a priori, including endothelial, inflammatory, cellular, interferon gamma (IFNg) and calcineurin inhibitor (CNI) related-genes based on the literature. Transcript measurements were performed in RNA extracted from stored, formalin-fixed, paraffin-embedded (FFPE) samples using NanoString™ technology. Histology and gene expression patterns of responders and non-responders were compared.ResultsA reductionist approach applying very tight criteria to identify caABMR and treatment response excluded the vast majority of clinical ABMR cases. Only 16 out of 139 cases with a written diagnosis of chronic rejection fulfilled the caABMR criteria. Histological associations with therapy response included a lower peritubular capillaritis score (p = 0.028) along with less glomerulitis. In contrast, no single gene discriminated responders from non-responders. Activated genes associated with NK cells and endothelial cells suggested lack of treatment response.ConclusionIn caABMR active microvascular injury, in particular peritubular capillaritis, differentiates treatment responders from non-responders. Transcriptome changes in NK cell and endothelial cell associated genes may further help to identify treatment response. Future prospective studies will be needed which include more subjects, who receive standardized treatment protocols to identify biomarkers for treatment response.Clinical Trial Registration[ClinicalTrials.gov], identifier [NCT03430414].
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Affiliation(s)
- Onur Sazpinar
- Clinic of Nephrology, Department of Medicine, University Hospital Zürich, Zurich, Switzerland
| | - Ariana Gaspert
- Department of Pathology and Molecular Pathology, University Hospital Zürich, Zurich, Switzerland
| | - Daniel Sidler
- Department of Nephrology and Hypertension, University Hospital Bern, Bern, Switzerland
| | - Markus Rechsteiner
- Department of Pathology and Molecular Pathology, University Hospital Zürich, Zurich, Switzerland
| | - Thomas F. Mueller
- Clinic of Nephrology, Department of Medicine, University Hospital Zürich, Zurich, Switzerland
- *Correspondence: Thomas F. Mueller,
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Shi W, Wu Y, Zhong L, Huang Z, Zhong M, Wang J, Huang W, Yi X, Lu X, Yuan J, Huang W, Zhou X. Diagnostic Accuracy of Serum Amyloid A in Acute Appendicitis: A Systematic Review and Meta-Analysis. Surg Infect (Larchmt) 2022; 23:380-387. [PMID: 35319305 DOI: 10.1089/sur.2021.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: Serum amyloid A has been widely reported as a useful biochemical marker in the diagnoses of acute appendicitis. The aim of this study was to appraise the diagnostic accuracy of serum amyloid A in the diagnosis of acute appendicitis. Methods: A systematic search of several databases was conducted. The search time was from the beginning of the databases creation to March 1, 2021, and the languages were restricted to English and Chinese. Clinical studies using serum amyloid A for the diagnosis of acute appendicitis were included. The overall sensitivity and specificity were calculated by using a bivariable mixed effects model. Heterogeneity was tested using I2 statistics. This study has been registered on the International Prospective Register of Systematic Reviews (PROSPERO; no. CRD42021241343). Results: Five studies comprising 668 participants were eligible for inclusion. The overall sensitivity and specificity of serum amyloid A in diagnosing acute appendicitis were 0.87 (95% confidence interval [CI], 0.79-0.92) and 0.74 (95% CI, 0.59-0.85), respectively. The positive and negative likelihood were 3.3 (95% CI, 2.1-5.4) and 0.18 (95% CI, 0.11-0.28), respectively. The area under the summary receiver operating characteristic curves was 0.89 (95% CI, 0.86-0.91). The heterogeneity was significant (I2 = 82%; 95% CI [63%-100%]). Conclusions: Serum amyloid A has good diagnostic accuracy for acute appendicitis. It is expected that serum amyloid A could be helpful in the early clinical diagnosis of acute appendicitis.
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Affiliation(s)
- Wenhua Shi
- The Second Clinical College of Guangzhou University of Chinese Medicine, Baiyun District, Guangzhou, China
| | - Yizhe Wu
- The Second Clinical College of Guangzhou University of Chinese Medicine, Baiyun District, Guangzhou, China
| | - Linyu Zhong
- The Second Clinical College of Guangzhou University of Chinese Medicine, Baiyun District, Guangzhou, China
| | - Zhibin Huang
- The Second Clinical College of Guangzhou University of Chinese Medicine, Baiyun District, Guangzhou, China
| | - Minlin Zhong
- The Second Clinical College of Guangzhou University of Chinese Medicine, Baiyun District, Guangzhou, China
| | - Jin Wang
- Emergency Department, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China
| | - Wujiao Huang
- Laboratory Department, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China
| | - Xiaojiang Yi
- Department of Colorectal Surgery, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China
| | - Xinquan Lu
- Department of Colorectal Surgery, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China
| | - Jingjing Yuan
- Anesthesiology Department, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China
| | - Wei Huang
- Emergency Department, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China
| | - Xianshi Zhou
- Emergency Department, Guangdong Provincial Hospital of Chinese Medicine, Yuexiu District, Guangzhou, China.,Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Yuexiu District, Guangzhou, China.,Guangzhou Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Emerging Infectious Diseases, Yuexiu District, Guangzhou, China
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12
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Sotak Š. Inflammatory markers in clinical practice. VNITRNI LEKARSTVI 2022; 68:11-16. [PMID: 36402554 DOI: 10.36290/vnl.2022.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Inflammation is the general defense response of the body against various harmful irritations. Diagnosis of the inflammatory process and monitoring of its treatment is based on a combination of clinical and laboratory findings. Biochemical inflammatory markers usually serve to support the diagnosis of the infection, to monitor it, and to monitor the effectiveness of anti-infective treatment. The inflammatory marker should be selected according to the clinical condition with regard to the treachery and deficiencies of the markers, with knowledge of their dynamics and with regard to the length of the anamnesis. As an optimal procedure for detecting bacterial infection, it is recommended to screen for several acute phase proteins. The role of the physician is to determine when, under which circumstances, and which markers to have examined, with a view to ensuring that the patient is correctly diagnosed in time and receives appropriate treatment, and on the other hand, that he is not unnecessarily iatrogenized and that the medical facility does not lose money unnecessarily.
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Mocellin D, Bratti LDOS, Silva AH, Assunção LS, Kretzer IF, Filippin-Monteiro FB. Serum from morbidly obese patients affects melanoma cell behavior in vitro. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-979020201000x42e19375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023] Open
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Integrated Analysis to Identify a Redox-Related Prognostic Signature for Clear Cell Renal Cell Carcinoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6648093. [PMID: 33968297 PMCID: PMC8084660 DOI: 10.1155/2021/6648093] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/03/2021] [Accepted: 04/12/2021] [Indexed: 02/06/2023]
Abstract
The imbalance of the redox system has been shown to be closely related to the occurrence and progression of many cancers. However, the biological function and clinical significance of redox-related genes (RRGs) in clear cell renal cell carcinoma (ccRCC) are unclear. In our current study, we downloaded transcriptome data from The Cancer Genome Atlas (TCGA) database of ccRCC patients and identified the differential expression of RRGs in tumor and normal kidney tissues. Then, we identified a total of 344 differentially expressed RRGs, including 234 upregulated and 110 downregulated RRGs. Fourteen prognosis-related RRGs (ADAM8, CGN, EIF4EBP1, FOXM1, G6PC, HAMP, HTR2C, ITIH4, LTB4R, MMP3, PLG, PRKCG, SAA1, and VWF) were selected out, and a prognosis-related signature was constructed based on these RRGs. Survival analysis showed that overall survival was lower in the high-risk group than in the low-risk group. The area under the receiver operating characteristic curve of the risk score signature was 0.728 at three years and 0.759 at five years in the TCGA cohort and 0.804 at three years and 0.829 at five years in the E-MTAB-1980 cohort, showing good predictive performance. In addition, we explored the regulatory relationships of these RRGs with upstream miRNA, their biological functions and molecular mechanisms, and their relationship with immune cell infiltration. We also established a nomogram based on these prognostic RRGs and performed internal and external validation in the TCGA and E-MTAB-1980 cohorts, respectively, showing an accurate prediction of ccRCC prognosis. Moreover, a stratified analysis showed a significant correlation between the prognostic signature and ccRCC progression.
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Menzel A, Samouda H, Dohet F, Loap S, Ellulu MS, Bohn T. Common and Novel Markers for Measuring Inflammation and Oxidative Stress Ex Vivo in Research and Clinical Practice-Which to Use Regarding Disease Outcomes? Antioxidants (Basel) 2021; 10:antiox10030414. [PMID: 33803155 PMCID: PMC8001241 DOI: 10.3390/antiox10030414] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 02/06/2023] Open
Abstract
Many chronic conditions such as cancer, chronic obstructive pulmonary disease, type-2 diabetes, obesity, peripheral/coronary artery disease and auto-immune diseases are associated with low-grade inflammation. Closely related to inflammation is oxidative stress (OS), which can be either causal or secondary to inflammation. While a low level of OS is physiological, chronically increased OS is deleterious. Therefore, valid biomarkers of these signalling pathways may enable detection and following progression of OS/inflammation as well as to evaluate treatment efficacy. Such biomarkers should be stable and obtainable through non-invasive methods and their determination should be affordable and easy. The most frequently used inflammatory markers include acute-phase proteins, essentially CRP, serum amyloid A, fibrinogen and procalcitonin, and cytokines, predominantly TNFα, interleukins 1β, 6, 8, 10 and 12 and their receptors and IFNγ. Some cytokines appear to be disease-specific. Conversely, OS-being ubiquitous-and its biomarkers appear less disease or tissue-specific. These include lipid peroxidation products, e.g., F2-isoprostanes and malondialdehyde, DNA breakdown products (e.g., 8-OH-dG), protein adducts (e.g., carbonylated proteins), or antioxidant status. More novel markers include also -omics related ones, as well as non-invasive, questionnaire-based measures, such as the dietary inflammatory-index (DII), but their link to biological responses may be variable. Nevertheless, many of these markers have been clearly related to a number of diseases. However, their use in clinical practice is often limited, due to lacking analytical or clinical validation, or technical challenges. In this review, we strive to highlight frequently employed and useful markers of inflammation-related OS, including novel promising markers.
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Affiliation(s)
- Alain Menzel
- Laboratoires Réunis, 38, Rue Hiehl, L-6131 Junglinster, Luxembourg; (A.M.); (F.D.)
| | - Hanen Samouda
- Nutrition and Health Research Group, Department of Population Health, Luxembourg Institute of Health, 1 A-B, Rue Thomas Edison, L-1445 Strassen, Luxembourg;
| | - Francois Dohet
- Laboratoires Réunis, 38, Rue Hiehl, L-6131 Junglinster, Luxembourg; (A.M.); (F.D.)
| | - Suva Loap
- Clinic Cryo Esthetic, 11 Rue Éblé, 75007 Paris, France;
| | - Mohammed S. Ellulu
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, Al-Azhar University of Gaza (AUG), Gaza City 00970, Palestine;
| | - Torsten Bohn
- Nutrition and Health Research Group, Department of Population Health, Luxembourg Institute of Health, 1 A-B, Rue Thomas Edison, L-1445 Strassen, Luxembourg;
- Correspondence:
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Carbone T, Pafundi V, Schievano C, Assunta D, Padula MC, Giordano M, Canora G, Lazzari C, Padula AA, D'Angelo S. Serum amyloid A in healthy subjects: assessment of reference value using ELISA method. J Immunoassay Immunochem 2020; 42:129-137. [PMID: 33119992 DOI: 10.1080/15321819.2020.1837160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Serum amyloid A (SAA) is a family of acute-phase reactants. The rise of SAA concentration in blood circulation during the acute-phase response is a clinical marker of active inflammation. Despite its practical and analytical advantages, SAA measurement by enzyme-linked immunosorbent assay (ELISA) has been used mainly as a research tool rather than for the routine laboratory testing. This may be partly explained by the lack of robust reference data in the literature for the different commercially available immunoassays. Using the recommended procedures for the production of reference intervals published by the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC), we developed the SAA reference interval for a well-defined Italian healthy population and investigated the correlation among SAA and C-reactive protein (CRP), the commonly used acute-phase marker. After data normalization, the reference cutoff was calculated as 225 ng/ml. A good correlation between SAA and CRP was found (P < .05). No statistically significant differences was found between males and females when the means of SAA values were compared, suggesting that not gender-partitioned reference range is recommended for this analyte. This study allowed to define a widely accepted reference cutoff for the SAA detected by ELISA, responding to an unmet need of laboratory medicine.
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Affiliation(s)
- Teresa Carbone
- IReL - Rheumatology Institute of Lucania, San Carlo Hospital, Potenza, Italy.,Immunopathology Laboratory, San Carlo Hospital, Potenza, Italy
| | - Vito Pafundi
- Immunopathology Laboratory, San Carlo Hospital, Potenza, Italy
| | - Carlo Schievano
- Department of Statistical Sciences, Innovative Statistical Research Srl, Padova, Italy
| | | | | | - Mara Giordano
- Immunopathology Laboratory, San Carlo Hospital, Potenza, Italy
| | - Giuseppe Canora
- Immunopathology Laboratory, San Carlo Hospital, Potenza, Italy
| | | | - Angela Anna Padula
- IReL - Rheumatology Institute of Lucania, San Carlo Hospital, Potenza, Italy
| | - Salvatore D'Angelo
- IReL - Rheumatology Institute of Lucania, San Carlo Hospital, Potenza, Italy
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Zhao SL, Liu XW, Wu SW, Zheng YY, Zhang WY. Quantitative proteomic analysis of down syndrome biomarkers in maternal serum using isobaric tags for relative and absolute quantification (iTRAQ). Gynecol Endocrinol 2020; 36:489-495. [PMID: 31793358 DOI: 10.1080/09513590.2019.1696302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Prenatal diagnosis of Down syndrome (DS) is based on calculated risk involving maternal age, biochemical and ultrasonographic markers, and, more recently, cell-free DNA (cfDNA). The present study was designed to identify Down Syndrome biomarkers in maternal serum. We quantified the changes in maternal serum protein levels between 10 non-pregnant women, 10 pregnant women with healthy fetuses, and 10 pregnant women with DS fetuses using isobaric tags for relative and absolute quantification (iTRAQ). We subsequently conducted a Gene Ontology (GO) analysis. A total of 470 proteins were identified, 11 of which had significantly different serum levels between the DS fetus group and Healthy fetuses group. Our data shows the identified proteins may be relevant to DS and constitute potential DS biomarkers.
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Affiliation(s)
- Sheng-Long Zhao
- Department of Obstertrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Xiao-Wei Liu
- Department of Obstertrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Shao-Wen Wu
- Department of Obstertrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Yuan-Yuan Zheng
- Department of Obstertrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Wei-Yuan Zhang
- Department of Obstertrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
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A Clinical Investigation on Serum Amyloid A Concentration in Client-Owned Healthy and Diseased Cats in a Primary Care Animal Hospital. Vet Sci 2020; 7:vetsci7020045. [PMID: 32326517 PMCID: PMC7355685 DOI: 10.3390/vetsci7020045] [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: 04/01/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 02/06/2023] Open
Abstract
Although measurement of serum amyloid A (SAA) concentration in client-owned cats has already been shown to be clinically useful, limited data are available on common diseases at primary care hospitals. In this study, we measured the SAA concentration in cats with various diseases and investigated their clinical significance using a primary care hospital as a population. We measured the SAA concentrations in healthy cats (n = 98) and those with various clinical signs (n = 444). The SAA concentrations in healthy cats did not differ significantly by age, breed, sex, and presence/absence of neutering/spaying. The SAA concentrations were significantly higher in the diseased cat group than in the healthy cat group (p < 0.001). We observed significant increases in SAA concentrations in cats with confirmed diagnosis of inflammatory disease such as upper respiratory tract infections (p < 0.001), pneumonia (p < 0.001), pyometra (p = 0.001), and feline infectious peritonitis (p < 0.001), compared with those observed in healthy cats. Conversely, no increase was observed in cardiomyopathy, hyperthyroidism, and diabetes mellitus without systemic inflammation. In univariate analysis, survival at 30 days (p = 0.03) differed significantly between the low and high SAA concentration groups, but not at 180 days. In multivariate analysis, survival at 30 days did not significantly affect SAA concentration. Measurement of SAA concentration is a useful biomarker for detecting the presence or absence of inflammation in diseased cats. However, it may not be useful as a biomarker for determining the prognosis of the disease.
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Castillo-Mancilla JR, Phillips AN, Neaton JD, Neuhaus J, Sharma S, Baker JV, Collins S, Mannheimer S, Pett S, Touzeau-Römer V, Polizzotto MN, Lundgren JD, Gardner EM. Incomplete ART adherence is associated with higher inflammation in individuals who achieved virologic suppression in the START study. J Int AIDS Soc 2020; 22:e25297. [PMID: 31250552 PMCID: PMC6597899 DOI: 10.1002/jia2.25297] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 05/09/2019] [Indexed: 12/11/2022] Open
Abstract
Introduction Suboptimal ART adherence, despite HIV viral suppression, has been associated with chronic residual inflammation. Whether this association extends to individuals who initiate ART during early HIV infection remains unknown, which was the objective of this study. Methods Plasma levels of interleukin‐6 (IL‐6), high‐sensitivity C‐reactive protein, serum amyloid A protein (SAA), IL‐27, soluble intercellular adhesion molecule‐1, soluble vascular adhesion molecule‐1, D‐dimer and the CD4+/CD8+ T‐cell ratio, were analysed at baseline and eight months after ART initiation in treatment‐naïve participants with HIV and CD4+ T‐cells >500 cells/mm3 enrolled in the immediate arm of START. Adherence was assessed by seven‐day self‐report. Multivariable linear regression was utilized to analyse the association between ART adherence and each biomarker at the eight‐month visit in participants who achieved virologic suppression (<50 copies/mL). Results We evaluated 1627 participants (422 female) who achieved virologic suppression at the eight‐month visit in the period between 2009 and 2013. Median (IQR) CD4+ T‐cell count before ART was 651 (585, 769) cells/mm3. Incomplete adherence was reported in 109 (7%) participants at the eight month visit. After adjusting for covariates, plasma IL‐6 was 1.12 (95% CI, 1.00 to 1.26; p = 0.047) fold higher in participants reporting incomplete versus 100% adherence. A similar association for SAA was observed in an exploratory analysis (1.29 (95% CI 1.04 to 1.60); p = 0.02). No significant differences in other biomarkers were observed. Conclusions Incomplete ART adherence was associated with higher IL‐6 levels in individuals who achieved virologic suppression early after ART initiation in START. A potential similar association for SAA requires confirmation. These findings suggest a role for identifying strategies to maximize ART adherence even during virologic suppression. ClinicalTrials.gov number: NCT00867048.
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Affiliation(s)
| | - Andrew N Phillips
- Institute for Global Health, University College London, London, United Kingdom
| | - James D Neaton
- School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | | | - Shweta Sharma
- School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Jason V Baker
- Hennepin Healthcare Research Institute, Minneapolis, MN, USA.,School of Medicine, University of Minnesota, Minneapolis, MN, USA
| | | | - Sharon Mannheimer
- Harlem Hospital Center, Columbia University Medical Center, New York, NY, USA
| | - Sarah Pett
- Institute for Global Health, University College London, London, United Kingdom.,Institute of Clinical Trials and Methodology, University College London, London, United Kingdom.,Kirby Institute, University of New South Wales, Sydney, Australia
| | - Veronique Touzeau-Römer
- AKH, Division of Immunology, Allergy and Infectious Diseases, University of Vienna Medical School, Vienna, Austria
| | | | - Jens D Lundgren
- CHIP, Department of Infectious Diseases, Rigshospitalet, Copenhagen, Denmark
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Tumor Markers in Endometrial Cancer. CURRENT OBSTETRICS AND GYNECOLOGY REPORTS 2020. [DOI: 10.1007/s13669-020-00279-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Li J, Lai C, Peng S, Chen H, Zhou L, Chen Y, Chen S. The prognostic value of integration of pretreatment serum amyloid A (SAA)-EBV DNA (S-D) grade in patients with nasopharyngeal carcinoma. Clin Transl Med 2020; 9:2. [PMID: 31907639 PMCID: PMC6944720 DOI: 10.1186/s40169-019-0252-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/19/2019] [Indexed: 12/18/2022] Open
Abstract
Background Serum amyloid A (SAA) has been associated with the development and prognosis of cancer. The purpose of this study was to evaluate the predictive value of integration of pretreatment SAA–EBV DNA (S-D) grade and comparison with the TNM staging system in patients with nasopharyngeal carcinoma (NPC). The S-D grade was calculated based on the cut-off values of serum SAA and EBV DNA copy numbers which were determined by receiver operating characteristic (ROC) curves. We evaluated the prognostic value of pretreatment SAA, EBV DNA and S-D grade on overall survival (OS) of NPC patients. We also evaluated the predictive power of S-D grade with TNM staging system using 4 indices: concordance statistics (C-index), time-dependent ROC (ROCt) curve, net reclassification index (NRI) and integrated discrimination improvement (IDI). Results A total of 304 NPC patients were enrolled in this study. Multivariate analysis showed that TNM stage (P = 0.007), SAA (P = 0.013), and EBV DNA (P = 0.033) were independent prognostic factors in NPC. The S-D grade was divided into S-D grade 1, S-D grade 2, and S-D grade 3, which had more predictive accuracy for OS than TNM staging according to all 4 indices. Conclusions We found that the S-D grade could be used as a new tool to predict the OS in NPC patients.
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Affiliation(s)
- Jianpei Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Changchun Lai
- Department Of Clinical Laboratory, Maoming People's Hospital, Maoming, 525000, Guangdong, People's Republic of China
| | - Songguo Peng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Hao Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Lei Zhou
- Department Of Clinical Laboratory, The Traditional Chinese Medical Hospital of Gaozhou City, Maoming, 525000, Guangdong, People's Republic of China
| | - Yufeng Chen
- Department Of Clinical Laboratory, Maoming People's Hospital, Maoming, 525000, Guangdong, People's Republic of China
| | - Shulin Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
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Yuan ZY, Zhang XX, Wu YJ, Zeng ZP, She WM, Chen SY, Zhang YQ, Guo JS. Serum amyloid A levels in patients with liver diseases. World J Gastroenterol 2019; 25:6440-6450. [PMID: 31798280 PMCID: PMC6881510 DOI: 10.3748/wjg.v25.i43.6440] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 09/23/2019] [Accepted: 11/07/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Serum amyloid A (SAA) is an acute phase protein mainly synthesized by the liver. SAA induces inflammatory phenotype and promotes cell proliferation in activated hepatic stellate cells, the major scar forming cells in the liver. However, few studies have reported on the serum levels of SAA in human liver disease and its clinical significance in various liver diseases.
AIM To investigate the serum levels of SAA in patients with different liver diseases and analyze the factors associated with the alteration of SAA levels in chronic hepatitis B (CHB) patients.
METHODS Two hundred and seventy-eight patients with different liver diseases and 117 healthy controls were included in this study. The patients included 205 with CHB, 22 with active autoimmune liver disease (AILD), 21 with nonalcoholic steatohepatitis (NASH), 14 with drug-induced liver injury (DILI), and 16 with pyogenic liver abscess. Serum levels of SAA and other clinical parameters were collected for the analysis of the factors associated with SAA level. Mann-Whitney U test was used to compare the serum SAA levels of patients with various liver diseases with those of healthy controls. Bonferroni test was applied for post hoc comparisons to control the probability of type 1 error (alpha = 0.05/6 = 0.008). For statistical tests of other variables, P < 0.05 was considered statistically significant. Statistically significant factors determined by single factor analysis were further analyzed by binary multivariate logistic regression analysis.
RESULTS All patients with active liver diseases had higher serum SAA levels than healthy controls and the inactive CHB patients, with the highest SAA level found in patients with pyogenic liver abscess (398.4 ± 246.8 mg/L). Patients with active AILD (19.73 ± 24.81 mg/L) or DILI (8.036 ± 5.685 mg/L) showed higher SAA levels than those with active CHB (6.621 ± 6.776 mg/L) and NASH (6.624 ± 4.891 mg/L). Single (P < 0.001) and multivariate logistic regression analyses (P = 0.039) for the CHB patients suggested that patients with active CHB were associated with an SAA serum level higher than 6.4 mg/L. Serum levels of SAA and CRP (C-reactive protein) were positively correlated in patients with CHB (P < 0.001), pyogenic liver abscess (P = 0.045), and active AILD (P = 0.02). Serum levels of SAA (0.80-871.0 mg/L) had a broader fluctuation range than CRP (0.30-271.3 mg/L).
CONCLUSION Serum level of SAA is a sensitive biomarker for inflammatory activity of pyogenic liver abscess. It may also be a weak marker reflecting milder inflammatory status in the liver of patients with CHB and other active liver diseases.
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Affiliation(s)
- Zi-Ying Yuan
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - Xing-Xin Zhang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
| | - Yu-Jing Wu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
| | - Zhi-Ping Zeng
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
| | - Wei-Min She
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
| | - Shi-Yao Chen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
| | - Yuan-Qing Zhang
- The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Kunming Medical University, Kunming 650000, Yunnan Province, China
| | - Jin-Sheng Guo
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Shanghai Institute of Liver Diseases, Shanghai 200032, China
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Vietri L, Fui A, Bergantini L, d'Alessandro M, Cameli P, Sestini P, Rottoli P, Bargagli E. Serum amyloid A: A potential biomarker of lung disorders. Respir Investig 2019; 58:21-27. [PMID: 31708467 DOI: 10.1016/j.resinv.2019.09.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/29/2019] [Accepted: 09/20/2019] [Indexed: 12/27/2022]
Abstract
Serum amyloid A is an acute-phase protein with multiple immunological functions. Serum amyloid A is involved in lipid metabolism, inflammatory reactions, granuloma formation, and cancerogenesis. Additionally, serum amyloid A is involved in the pathogenesis of different autoimmune lung diseases. The levels of serum amyloid A has been evaluated in biological fluids of patients with different lung diseases, including autoimmune disorders, chronic obstructive pulmonary diseases, obstructive sleep apnea syndrome, sarcoidosis, asthma, lung cancer, and other lung disorders, such as idiopathic pulmonary fibrosis, tuberculosis, radiation pneumonitis, and cystic fibrosis. This review focuses on the cellular and molecular interactions of serum amyloid A in different lung diseases and suggests this acute-phase protein as a prognostic marker.
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Affiliation(s)
- Lucia Vietri
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Annalisa Fui
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Laura Bergantini
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Miriana d'Alessandro
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Paolo Cameli
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Piersante Sestini
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Paola Rottoli
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
| | - Elena Bargagli
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, Siena University, Siena, Italy.
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Gromark C, Harris RA, Wickström R, Horne A, Silverberg-Mörse M, Serlachius E, Mataix-Cols D. Establishing a Pediatric Acute-Onset Neuropsychiatric Syndrome Clinic: Baseline Clinical Features of the Pediatric Acute-Onset Neuropsychiatric Syndrome Cohort at Karolinska Institutet. J Child Adolesc Psychopharmacol 2019; 29:625-633. [PMID: 31170007 PMCID: PMC6786340 DOI: 10.1089/cap.2018.0127] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Objectives: Pediatric acute-onset neuropsychiatric syndrome (PANS) is a descriptive clinical entity defined by the abrupt onset of psychiatric and somatic symptoms leading to significant loss of function. Data on well-characterized PANS patients are limited, biomarkers have yet to be identified, and a solid evidence base to guide treatment is lacking. In this study, we present our experience of a systematic evaluation of the first 45 patients included in a Swedish cohort. Methods: During the period 2014-2018, our clinic received 100 referrals regarding suspected PANS. All patients underwent a standardized psychiatric/medical evaluation by a child/adolescent psychiatrist and a clinical psychologist or a nurse. Those with severe symptoms were also assessed by a pediatric neurologist and a pediatric rheumatologist. Laboratory tests were obtained at different time points in an attempt to capture an active disease state. Results: Of the 100 referrals, 45 met strict PANS criteria and consented to participate in a long-term follow-up study. The median age at intake was 7.2 years (range 3.0-13.1) and 56% were male. Ninety-three percent fulfilled both criteria for acute/atypical onset of PANS symptoms and having had an infection in relation to onset. Sixteen percent had an onset of an autoimmune or inflammatory disorder in temporal relation to the onset of PANS-related symptoms. The most common onset symptoms were obsessive-compulsive disorder (89%), anxiety (78%), and emotional lability (71%). Twenty-four percent had a preexisting autoimmune disease (AD) and 18% a preexisting psychiatric/neuropsychiatric diagnosis. Sixty-four percent of biological relatives had at least one psychiatric disorder and 76% at least one AD or inflammatory disorder. Complement activation (37%), leukopenia (20%), positive antinuclear antibodies (17%), and elevated thyroid antibodies (11%) were the most common laboratory findings. Conclusions: In our PANS cohort, there was a strong indication of an association with AD. Further work is needed to establish whether any of the potential biomarkers identified will be clinically useful. Long-term follow-up of these patients using the Swedish national registers will enable a deeper understanding of the course of this patient group.
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Affiliation(s)
- Caroline Gromark
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- BUP OCD and Related Disorders, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
- Centre for Psychiatry Research, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Robert A. Harris
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Ronny Wickström
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Division of Pediatric Neurology, Karolinska University Hospital, Solna, Sweden
| | - AnnaCarin Horne
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Division of Pediatric Rheumatology, Karolinska University Hospital, Solna, Sweden
| | - Maria Silverberg-Mörse
- BUP OCD and Related Disorders, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Eva Serlachius
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Centre for Psychiatry Research, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - David Mataix-Cols
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- BUP OCD and Related Disorders, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
- Centre for Psychiatry Research, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
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Vietri L, Bennett D, Cameli P, Bergantini L, Cillis G, Sestini P, Bargagli E, Rottoli P. Serum amyloid A in patients with idiopathic pulmonary fibrosis. Respir Investig 2019; 57:430-434. [PMID: 31031123 DOI: 10.1016/j.resinv.2019.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/20/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Serum amyloid A (SAA) is an apo-lipoprotein (12-14 kDa) produced by the liver in response to proinflammatory cytokines from activated monocytes. The precursor of SAA is an acute-phase protein involved in the pathogenesis of sarcoidosis and has been found to be increased during exacerbation of chronic obstructive pulmonary disease and lung cancer. However, no data are available on SAA levels in patients with idiopathic pulmonary fibrosis (IPF), the most common and severe idiopathic form of interstitial pneumonitis associated with a usual interstitial histological and radiological pattern. The aim of this preliminary study was to evaluate SAA concentration in patients with IPF and to explore its potential use as a clinical biomarker. METHODS SAA levels were determined by enzyme-linked immunosorbent assay in a population of 21 patients with IPF (14 male, aged 64.8 ± 8.1 years) and compared with those in 11 healthy controls (3 male, aged 55 ± 11.3 years). Clinical, functional, and immunological data were collected in a database. RESULTS SAA levels were significantly higher in patients with IPF than in controls (p = 0.03). In patients with IPF, statistically significant correlations were found between SAA and HDL cholesterol levels (r = -0.62, p = 0.05) and FVC % predicted value (r = -0.52, p = 0.01). CONCLUSIONS SAA is a promising marker of disease severity in patients with IPF. Our preliminary data suggest a potential pathogenetic role of alteration in lipid metabolism in this rare disease.
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Affiliation(s)
- Lucia Vietri
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - David Bennett
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - Paolo Cameli
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - Laura Bergantini
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - Giuseppe Cillis
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - Piersante Sestini
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - Elena Bargagli
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
| | - Paola Rottoli
- Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, 53100 Siena, Italy.
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Zhang Y, Zhang J, Sheng H, Li H, Wang R. Acute phase reactant serum amyloid A in inflammation and other diseases. Adv Clin Chem 2019; 90:25-80. [PMID: 31122611 DOI: 10.1016/bs.acc.2019.01.002] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Acute-phase reactant serum amyloid A (A-SAA) plays an important role in acute and chronic inflammation and is used in clinical laboratories as an indicator of inflammation. Although both A-SAA and C-reactive protein (CRP) are acute-phase proteins, the detection of A-SAA is more conclusive than the detection of CRP in patients with viral infections, severe acute pancreatitis, and rejection reactions to kidney transplants. A-SAA has greater clinical diagnostic value in patients who are immunosuppressed, patients with cystic fibrosis who are treated with corticoids, and preterm infants with late-onset sepsis. Nevertheless, for the assessment of the inflammation status and identification of viral infection in other pathologies, such as bacterial infections, the combinatorial use of A-SAA and other acute-phase proteins (APPs), such as CRP and procalcitonin (PCT), can provide more information and sensitivity than the use of any of these proteins alone, and the information generated is important in guiding antibiotic therapy. In addition, A-SAA-associated diseases and the diagnostic value of A-SAA are discussed. However, the relationship between different A-SAA isotypes and their human diseases are mostly derived from research laboratories with limited clinical samples. Thus, further clinical evaluations are necessary to confirm the clinical significance of each A-SAA isotype. Furthermore, the currently available A-SAA assays are based on polyclonal antibodies, which lack isotype specificity and are associated with many inflammatory diseases. Therefore, these assays are usually used in combination with other biomarkers in the clinic.
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Affiliation(s)
- Yan Zhang
- Shanghai R&D Center, DiaSys Diagnostic Systems (Shanghai) Co., Ltd., Shanghai, China
| | - Jie Zhang
- Shanghai R&D Center, DiaSys Diagnostic Systems (Shanghai) Co., Ltd., Shanghai, China
| | - Huiming Sheng
- Department of Laboratory Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haichuan Li
- C.N. Maternity & Infant Health Hospital, Shanghai, China
| | - Rongfang Wang
- Shanghai R&D Center, DiaSys Diagnostic Systems (Shanghai) Co., Ltd., Shanghai, China.
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Lin HY, Tan GQ, Liu Y, Lin SQ. The prognostic value of serum amyloid A in solid tumors: a meta-analysis. Cancer Cell Int 2019; 19:62. [PMID: 30930691 PMCID: PMC6425599 DOI: 10.1186/s12935-019-0783-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 03/15/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Previous studies have demonstrated that serum amyloid A (SAA) levels are correlated with the clinical outcomes of solid tumors. However, the available data have not been systematically evaluated. The objective of the present meta-analysis was to explore the prognostic value of SAA levels in solid tumors. METHODS Eligible studies were identified from the PubMed, EMBASE and Science Citation Index electronic databases. The clinical characteristics, disease/progression-free survival (DFS/PFS) and overall survival (OS) were extracted from the eligible studies. The pooled hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated with Stata 12.0 software. We also performed subgroup, meta-regression and sensitivity analyses. RESULTS In total, 12 eligible studies including 2749 patients were enrolled in the present meta-analysis. The pooled HRs with 95% CIs showed that elevated levels of SAA were significantly associated with poor OS (HR = 3.01, 95% CI 1.96-4.63) and DFS/PFS (HR = 1.67, 95% CI 1.31-2.12) in patients with solid tumors. Although publication bias was seem found in the studies with regard to OS, a further trim and fill analysis revealed that the adjusted HR was 3.02 (95% CI 1.96-4.63), which was close to the original HR. Subgroup analysis confirmed an elevated level of SAA as a strong prognostic marker in patients with solid tumors, regardless of tumor type, detection method, cut-off value, sample size, area and variance analyses. CONCLUSION Our meta-analysis indicated that elevated levels of SAA might be an unfavorable prognostic marker for OS in patients with solid tumors.
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Affiliation(s)
- Hai-yingjie Lin
- Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630 Guangdong China
| | - Guo-qiang Tan
- Department of Oncology, Jiangmen Central Hospital, Jiangmen, 529030 Guangdong China
| | - Yan Liu
- Department of Oncology, Affiliated Dongfeng Hospital, Hubei University of Medicine, Shiyan, 442008 Hubei China
| | - Shao-qiang Lin
- Clinical Department of Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510080 Guangdong China
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Hirai K, Furusho H, Kawashima N, Xu S, de Beer M, Battaglino R, Van Dyke T, Stashenko P, Sasaki H. Serum Amyloid A Contributes to Chronic Apical Periodontitis via TLR2 and TLR4. J Dent Res 2019; 98:117-125. [PMID: 30189157 PMCID: PMC6304714 DOI: 10.1177/0022034518796456] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In the current concept of bacterial infections, pathogen-associated molecular patterns (PAMPs) derived from pathogens and damage-associated molecular patterns (DAMPs) released from damaged/necrotic host cells are crucial factors in induction of innate immune responses. However, the implication of DAMPs in apical and marginal periodontitis is unknown. Serum amyloid A (SAA) is a DAMP that is involved in the development of various chronic inflammatory diseases, such as rheumatoid arthritis. In the present study, we tested whether SAA is involved in the pathogenesis of periapical lesions, using human periapical surgical specimens and mice deficient in SAA and Toll-like receptors (TLR). SAA1/2 was locally expressed in human periapical lesions at the mRNA and protein levels. The level of SAA protein appeared to be positively associated with the inflammatory status of the lesions. In the development of mouse periapical inflammation, SAA1.1/2.1 was elevated locally and systemically in wild-type (WT) mice. Although SAA1.1/2.1 double-knockout and SAA3 knockout mice had redundant attenuation of the extent of periapical lesions, these animals showed strikingly improved inflammatory cell infiltration versus WT. Recombinant human SAA1 (rhSAA1) directly induced chemotaxis of WT neutrophils in a dose-dependent manner in vitro. In addition, rhSAA1 stimulation significantly prolonged the survival of WT neutrophils as compared with nonstimulated neutrophils. Furthermore, rhSAA1 activated the NF-κB pathway and subsequent IL-1α production in macrophages in a dose-dependent manner. However, TLR2/TLR4 double deficiency substantially diminished these SAA-mediated proinflammatory responses. Taken together, the SAA-TLR axis plays an important role in the chronicity of periapical inflammation via induction of inflammatory cell infiltration and prolonged cell survival. The interactions of PAMPs and DAMPs require further investigation in dental/oral inflammation.
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Affiliation(s)
- K. Hirai
- Department of Cariology, Restorative Sciences
and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
- Department of Immunology and Infectious
Diseases, The Forsyth Institute, Cambridge, MA, USA
| | - H. Furusho
- Department of Oral and Maxillofacial
Pathobiology, Hiroshima University, Hiroshima, Japan
| | - N. Kawashima
- Department of Pulp Biology and Endodontics,
Tokyo Medical and Dental University, Tokyo, Japan
| | - S. Xu
- Department of Immunology and Infectious
Diseases, The Forsyth Institute, Cambridge, MA, USA
- Department of Medicine, Brigham and Women’s
Hospital and Harvard Medical School, Boston, MA, USA
| | - M.C. de Beer
- Department of Physiology, University of
Kentucky, Lexington, KY, USA
| | - R. Battaglino
- Department of Physical Medicine and
Rehabilitation, School of Medicine, University of Colorado, Aurora, CO, USA
| | - T. Van Dyke
- The Forsyth Institute, Cambridge, MA,
USA
- Department of Oral Medicine, Infection, and
Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - P. Stashenko
- Department of Immunology and Infectious
Diseases, The Forsyth Institute, Cambridge, MA, USA
- Department of Oral Medicine, Infection, and
Immunity, Harvard School of Dental Medicine, Boston, MA, USA
- Department of Endodontics, Goldman School of
Dental Medicine, Boston University, Boston, MA, USA
| | - H. Sasaki
- Department of Cariology, Restorative Sciences
and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
- Department of Immunology and Infectious
Diseases, The Forsyth Institute, Cambridge, MA, USA
- Department of Oral Medicine, Infection, and
Immunity, Harvard School of Dental Medicine, Boston, MA, USA
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Zhang G, Hara H, Yamamoto T, Li Q, Jagdale A, Li Y, Cooper DKC, Iwase H. Serum amyloid a as an indicator of impending xenograft failure: Experimental studies. Int J Surg 2018; 60:283-290. [PMID: 30521954 PMCID: PMC6310230 DOI: 10.1016/j.ijsu.2018.11.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 11/30/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND There is well-documented systemic inflammatory response in xenograft recipients to the presence of a pig graft. Serum amyloid A (SAA) is an inflammatory marker that is elevated in various pathological states. The assay used to measure it is (i) simple, (ii) relatively inexpensive, and (iii) provides an answer within minutes. METHOD The levels of SAA (n = 11) and C-reactive protein (C-RP) (n = 8) were measured retrospectively in the serum of baboons with pig kidney transplants, who received therapy with an IL-6R inhibitor and a TNF-α antagonist. Immunohistochemistry (IHC) was used to identify amyloid A and C-RP expression in the native livers and deposition in the pig kidney grafts. RESULTS One kidney graft underwent hyperacute rejection, 6 (55%) underwent acute antibody-mediated rejection, 3 baboons (27%) were euthanized for serious systemic infections, and one was euthanized for acute gastric dilatation. The SAA increased temporarily after kidney transplantation, and increased again by the day of euthanasia, indicating moderate (n = 3) or significant (severe) (n = 8) inflammation. In contrast, as the baboons were receiving tocilizumab, C-RP did not increase. There was greater expression of amyloid A in baboon livers (by IHC) than of C-RP (mean OD 53 vs 1, p < 0.01), and greater deposition of amyloid A than C-RP in the pig kidney grafts (mean OD 24 vs 2, p < 0.001). Plasma fibrinogen negatively correlated with the expression of amyloid A in the liver (r = -0.72, p < 0.05). The results of the SAA assay correlated with amyloid A expression in the liver and deposition in the kidney grafts. CONCLUSIONS SAA is a sensitive, but non-specific, marker for inflammation in baboons with pig kidney grafts, and is not affected by therapy that suppresses the response of C-RP. The SAA assay is a rapid, reliable, and relatively inexpensive method of following the inflammatory state of baboons with pig xenografts.
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Affiliation(s)
- Guoqiang Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China; Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hidetaka Hara
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Takayuki Yamamoto
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Qi Li
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Abhijit Jagdale
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Yong Li
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China.
| | - David K C Cooper
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hayato Iwase
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA.
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Abstract
Objective To clarify the underlying diseases, clinical manifestations, and treatment strategies for Amyloid A (AA) amyloidosis (AAA) in Japanese patients. Methods We conducted a survey on Japanese patients with AAA treated between January 1, 2012, and December 31, 2014. Results A total of 199 patients with AAA were included in the present study. The underlying diseases of AAA were rheumatoid arthritis (60.3%), uncharacterized inflammatory disorders (11.1%), neoplasms (7.0%), other rheumatic diseases (6.5%), inflammatory bowel diseases (4.5%), chronic infection (4.5%), Castleman's disease (4.0%), and autoinflammatory diseases (2.0%). The clinical manifestations at the diagnosis of AAA were moderate to severe renal dysfunction (46.2%), moderate to severe proteinuria (30.7%), intractable diarrhea (32.2%), melena (4.5%), paralytic ileus (3.5%), heart failure (11.6%), cardiac conduction disturbances (10.1%), arrhythmia (5.5%), and hypothyroidism (11.6%). Diagnostic biopsies were performed most frequently in the gastrointestinal tract (66.3%), followed by the kidneys (22.1%), heart (5.5%), abdominal fat (4.0%), and others (3.0%). Biologics were used to treat 97 patients with AAA (48.7%). Tocilizumab (TCZ) was administered to 66 patients, with 95.5% showing good responses. Anti-TNF agents were administered to 27 patients, with 74.1% showing good responses. The treatment effects of TCZ were significantly superior to those of anti-TNF agents (p<0.007). Conclusion The most common underlying diseases of AAA were rheumatic diseases. Uncharacterized inflammatory disorders and neoplasms were also frequently observed in patients with AAA. Renal and gastrointestinal manifestations were common and important for the diagnosis of AAA, with cardiac manifestations also being of significance. Biologics, particularly TCZ, were effective therapeutic modalities.
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Affiliation(s)
- Yasuaki Okuda
- Department of Internal Medicine, Center for Rheumatic Diseases, Dohgo Spa Hospital, Japan
| | - Toshiyuki Yamada
- Department of Clinical Laboratory Medicine, Jichi Medical University, Japan
| | - Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Japan
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Abstract
The goal of this review is to present a concise and critical assessment of the literature related to physiologic responses in cattle that are subjected to transportation. Over two-thirds of US cattle are transported. Understanding trends in circulating physiologic parameters is an important part of mitigating the negative effects of transportation. For the producer, linking these effects after transportation to morbidity outcomes within the first 45 days on feed (i.e. especially development of bovine respiratory disease) is critical. Physiologic parameters in circulation are of primary importance and may have value for prediction of bovine respiratory disease on arrival and for the understanding of disease pathogenesis. The results of our literature survey indicated that post-transportation immune function, increased acute phase proteins, glucocorticoids, and inflammation are a pivotal starting point for understanding disease. These potential biomarkers may have utility in identifying disease for targeted therapeutics so that traditional protocols that rely heavily on metaphylaxis can be avoided. Additional research is needed to develop strategies for physiological marker identification, treatment methods, or predictive behaviors to prevent respiratory disease before and after transport. This review examines the significant deleterious effects of transportation handling and stress, and current immune system translation and non-antimicrobial mitigation strategies.
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Abstract
AA amyloidosis may develop in patients with active chronic inflammation. Serum amyloid A (SAA), the precursor of the AA protein, is strongly amplified in the liver under the stimulation of inflammation-associated cytokines, such as IL-6, TNF, and IL-1. Sustained inflammation, aging, and polymorphisms in the SAA1.3 genotype are dependent risk factors for the formation of AA amyloidosis. The most rational treatment strategy for AA amyloidosis is to inhibit the production of SAA. Treatments for AA amyloidosis involving biologics have recently been emphasized. TNF inhibitors and abatacept reduce SAA levels; however, complete normalization is not always achieved. IL-6 inhibitors may normalize SAA levels in most patients in whom a sufficient concentration of medication is maintained in the blood. Therefore, treatments with IL-6 inhibitors represent an excellent therapeutic strategy for AA amyloidosis and have been verified by recent studies.
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Affiliation(s)
- Yasuaki Okuda
- a Department of Internal Medicine , Center for Rheumatic Diseases, Dohgo Spa Hospital , Matsuyama City , Japan
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Zhou J, Sheng J, Fan Y, Zhu X, Tao Q, He Y, Wang S. Association between serum amyloid A levels and cancers: a systematic review and meta-analysis. Postgrad Med J 2018; 94:499-507. [PMID: 30341230 DOI: 10.1136/postgradmedj-2018-136004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/02/2018] [Accepted: 09/08/2018] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Increased serum amyloid A (SAA) levels have been investigated in various human malignancies, but a consistent perspective has not been established to date. This study systematically reviewed the association between SAA levels and cancers. METHODS Cochrane Library, PubMed and Embase were carefully searched for available studies. The following keywords were used in database searches: 'serum amyloid A', 'SAA', 'cancer', 'tumour', 'carcinoma', 'nubble', 'knurl' and 'lump'. Pooled standard mean differences (SMDs) with corresponding 95% CIs were calculated using random-effects model analysis. RESULTS Twenty studies, which contained 3682 cancer cases and 2424 healthy controls, were identified in this systematic review and meta-analysis. Our study suggested that the average SAA concentrations in the case groups were significantly higher than those in control groups (SMD 0.77, 95% CI 0.55 to 1.00, p<0.001). Subgroup analysis revealed that continent, age and cancer location were associated with SAA level differences between case groups and control groups. Sensitivity analyses showed the robustness and credibility of our results. In addition, we further stratified analyses for cancer stages and found that the concentrations of SAA increased gradually with the aggravation of cancer stages. CONCLUSION High circulating SAA levels were markedly associated with the developing risks of cancer, especially for participants from Asia, Oceania and Europe, or subject age more than 50, or locations in oesophageal squamous cell, ovarian, breast, lung, renal and gastric cancers. In addition, our study found that the concentrations of SAA increased with the severity of cancer stages.
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Affiliation(s)
- Jielin Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Jie Sheng
- Anhui Provincial Laboratory of Population Health and Eugenics, School of Public Health, Anhui Medical University, Hefei, China
| | - Yong Fan
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Xingmeng Zhu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Qi Tao
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Yue He
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Sufang Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
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Lustig M, Gefen A, Benayahu D. Adipogenesis and lipid production in adipocytes subjected to sustained tensile deformations and elevated glucose concentration: a living cell-scale model system of diabesity. Biomech Model Mechanobiol 2018; 17:903-913. [PMID: 29335836 DOI: 10.1007/s10237-017-1000-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/29/2017] [Indexed: 12/15/2022]
Abstract
Adipocyte fate commitment is characterized by morphological changes of fibroblastic pre-adipocyte cells, and specifically by accumulation of lipid droplets (LDs) as part of the adipogenesis metabolism. Formation of LDs indicates the production of triglycerides from glucose through an insulin-regulated glucose internalization process. In obesity, adipocytes typically become insulin resistant, and glucose transport into the cells is impaired, resulting in type 2 diabetes. In the present study, we monitored the adipogenesis in 3T3-L1 cultured cells exposed to high (450 mg/dL hyperglycemia) and low (100 mg/dL physiological) glucose concentrations, in a novel cell culture model system of diabesity. In addition to glucose conditions, cells were concurrently exposed to different substrate tensile strains (12% and control) based on our prior work which revealed that adipogenesis is accelerated in cultures subjected to static, chronic substrate tensile deformations. Phase-contrast images were taken throughout the adipogenesis process (3 weeks) and were analyzed by an image processing algorithm which quantitatively monitors cell differentiation and lipid accumulation (number of LDs per cell and their radius as well as cell size and shape). The results indicated that high glucose concentrations and substrate tensile strains delivered to adipocytes accelerated lipid production by 1.7- and 1.4-fold, respectively. In addition, significant changes in average cell projected area and in other morphological attributes were observed during the differentiation process. The importance of this study is in characterizing the adipogenesis parameters as potential read-outs that can predict the occurrence of insulin resistance in the development of diabesity.
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Affiliation(s)
- Maayan Lustig
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Amit Gefen
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Dafna Benayahu
- Department of Cell and Developmental Biology, Sackler School of Medicine, Tel Aviv University, 69978, Tel Aviv, Israel.
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Chen QY, Tang QN, Tang LQ, Chen WH, Guo SS, Liu LT, Li CF, Li Y, Liang YJ, Sun XS, Guo L, Mo HY, Sun R, Luo DH, Fan YY, He Y, Chen MY, Cao KJ, Qian CN, Guo X, Mai HQ. Pretreatment Serum Amyloid A and C-reactive Protein Comparing with Epstein-Barr Virus DNA as Prognostic Indicators in Patients with Nasopharyngeal Carcinoma: A Prospective Study. Cancer Res Treat 2017; 50:701-711. [PMID: 28707462 PMCID: PMC6056968 DOI: 10.4143/crt.2017.180] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/03/2017] [Indexed: 12/15/2022] Open
Abstract
Purpose The measuring Epstein-Barr virus (EBV) DNA is an important predictor of nasopharyngeal carcinoma (NPC). This study evaluated the predictive value of pretreatment serum amyloid A (SAA) and C-reactive protein (CRP) comparing with EBV DNA in patients with NPC. Materials and Methods In an observational study of 419 non-metastatic NPC patients, we prospectively evaluated the prognostic effects of pretreatment SAA, CRP, and EBV DNA on survival. The primary end-point was progress-free survival (PFS). Results The median level of SAA and CRP was 4.28 mg/L and 1.88 mg/L, respectively. For the high-SAA group (> 4.28 mg/L) versus the low-SAA (≤ 4.28 mg/L) group and the high-CRP group (> 1.88 mg/L) versus the low-CRP (≤ 1.88 mg/L) group, the 5-year PFS was 64.5% versus 73.1% (p=0.013) and 65.2% versus 73.3% (p=0.064), respectively. EBV DNA detection showed a superior predictive result, the 5-year PFS in the EBV DNA ≥ 1,500 copies/mL group was obviously different than the EBV DNA < 1,500 copies/mL group (62.2% versus 77.8%, p < 0.001). Multifactorial Cox regression analysis confirmed that in the PFS, the independent prognostic factors were including EBV DNA (hazard ratio [HR], 1.788; p=0.009), tumour stage (HR, 1.903; p=0.021), and node stage (HR, 1.498; p=0.049), but the SAA and CRP were not included in the independent prognostic factors. Conclusion The results of SAA and CRP had a certain relationship with the prognosis of NPC, and the prognosis of patients with high level of SAA and CRP were poor. However, the predictive ability of SAA and CRP was lower than that of EBV DNA.
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Affiliation(s)
- Qiu-Yan Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Qing-Nan Tang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Lin-Quan Tang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Wen-Hui Chen
- Department of Oncology, the First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Shan-Shan Guo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Li-Ting Liu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Chao-Feng Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Information Technology, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yang Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yu-Jing Liang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Xue-Song Sun
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Ling Guo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Hao-Yuan Mo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Rui Sun
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Dong-Hua Luo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yu-Ying Fan
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yan He
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Ming-Yuan Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Ka-Jia Cao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Chao-Nan Qian
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Xiang Guo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Hai-Qiang Mai
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, China
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Kim SW, Lee JS, Lee SW, Kang BH, Kwon JB, Kim OS, Kim JS, Kim ES, Kwon DH, Kang SW. Easy-to-Fabricate and High-Sensitivity LSPR Type Specific Protein Detection Sensor Using AAO Nano-Pore Size Control. SENSORS 2017; 17:s17040856. [PMID: 28406469 PMCID: PMC5424733 DOI: 10.3390/s17040856] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 12/16/2022]
Abstract
In this study, we developed a pore size/pore area-controlled optical biosensor-based anodic aluminum oxide (AAO) nanostructure. As the pore size of AAO increases, the unit cell of AAO increases, which also increases the non-pore area to which the antibody binds. The increase in the number of antibodies immobilized on the surface of the AAO enables effective detection of trace amounts of antigen, because increased antigen-antibody bonding results in a larger surface refractive index change. High sensitivity was thus achieved through amplification of the interference wave of two vertically-incident reflected waves through the localized surface plasmon resonance phenomenon. The sensitivity of the fabricated sensor was evaluated by measuring the change in wavelength with the change in the refractive index of the device surface, and sensitivity was increased with increasing pore-size and non-pore area. The sensitivity of the fabricated sensor was improved and up to 11.8 ag/mL serum amyloid A1 antigen was detected. In addition, the selectivity of the fabricated sensor was confirmed through a reaction with a heterogeneous substance, C-reactive protein antigen. By using hard anodization during fabrication of the AAO, the fabrication time of the device was reduced and the AAO chip was fabricated quickly and easily.
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Affiliation(s)
- Sae-Wan Kim
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
| | - Jae-Sung Lee
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
| | - Sang-Won Lee
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
| | - Byoung-Ho Kang
- Division of Advanced Research and Development, SINOKOR, 12 Seongseogongdanbuk-ro 43-gil, Dalseo-gu, Daegu 704-920, Korea.
| | - Jin-Beom Kwon
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
| | - Ok-Sik Kim
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
| | - Ju-Seong Kim
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
| | - Eung-Soo Kim
- Division of Computer and Electronic Engineering, Pusan University of Foreign studies, 65 Namsan-dong, Geumjeong-gu, 608-738 Busan, Korea.
| | - Dae-Hyuk Kwon
- Department of Electronics Engineering, Kyungil University, Hayang-up, Gyeongsang buk-do 712-702, Korea.
| | - Shin-Won Kang
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea.
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Proteins behaving badly. Substoichiometric molecular control and amplification of the initiation and nature of amyloid fibril formation: lessons from and for blood clotting. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2017; 123:16-41. [DOI: 10.1016/j.pbiomolbio.2016.08.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 08/14/2016] [Accepted: 08/19/2016] [Indexed: 02/08/2023]
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Satoh M, Kotani K, Yamada S, Koinuma K, Horie H, Takeuchi M. Postoperative changes in high mobility group box 1 levels after colorectal cancer surgery. J Int Med Res 2016; 45:1651-1657. [PMID: 27834305 PMCID: PMC5805184 DOI: 10.1177/0300060516665455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective To investigate the potential use of high mobility group box 1 (HMGB1) as a marker for the surgical course following surgery for colorectal cancer (CRC). Methods Patients with advanced CRC undergoing open colorectal surgery who did not develop postsurgical complications were enrolled in the study. Blood samples were taken preoperatively and at 1 day, 1 week and 3 weeks after surgery for the measurement of the white blood cell count, serum C-reactive protein, serum amyloid A and HMGB1. Results Data from 21 patients were analysed. HMGB1 levels changed significantly during the surgical course, increasing from a preoperative median of 6.8 ng/ml to 12.1 ng/ml at 1 day postoperatively, and then decreasing to 8.1 ng/ml at 1 week postoperatively and 4.0 ng/ml at 3 weeks postoperatively. These changes were similar to but were not completely correlated with the changes seen in the other markers. Conclusion Serum HMGB1 may be a potential marker to monitor the surgical course in patients undergoing surgery for CRC, although further studies are warranted before it can be introduced into routine clinical practice.
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Affiliation(s)
- Masaaki Satoh
- 1 Department of Anaesthesiology and Critical Care Medicine, Jichi Medical University, Tochigi, Japan
| | - Kazuhiko Kotani
- 2 Division of Community and Family Medicine, Jichi Medical University, Tochigi, Japan
| | - Shingo Yamada
- 3 Central Laboratory, Shino-Test Corporation, Kanagawa, Japan
| | - Koji Koinuma
- 4 Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - Hisanaga Horie
- 4 Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - Mamoru Takeuchi
- 1 Department of Anaesthesiology and Critical Care Medicine, Jichi Medical University, Tochigi, Japan
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40
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Uhde M, Ajamian M, Li X, Wormser GP, Marques A, Alaedini A. Expression of C-Reactive Protein and Serum Amyloid A in Early to Late Manifestations of Lyme Disease. Clin Infect Dis 2016; 63:1399-1404. [PMID: 27585799 DOI: 10.1093/cid/ciw599] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/23/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Infection with Borrelia burgdorferi, the causative agent of Lyme disease, triggers host immune responses that affect the clinical outcome and are a source of biomarkers with diagnostic utility. Although adaptive immunity to B. burgdorferi has been extensively characterized, considerably less information is available about the development of innate acute-phase responses in Lyme disease. Our aim in this study was to evaluate the expression of C-reactive protein (CRP) and serum amyloid A (SAA), the prototype acute-phase response proteins, in the context of the varying manifestations associated with Lyme borreliosis. METHODS Circulating concentrations of CRP and SAA in patients with a range of early to late objective manifestations of Lyme disease and in individuals with post-treatment Lyme disease syndrome were compared with those in healthy control groups. RESULTS CRP and SAA levels were significantly elevated in early localized and early disseminated Lyme disease but not in the later stages of active infection. Levels of CRP, but not SAA, were also found to be significantly increased in patients with antibiotic-refractory Lyme arthritis and in those with post-treatment Lyme disease syndrome. CONCLUSIONS These findings indicate that circulating CRP and SAA levels are highest when the concentration of spirochetes is greatest in skin and/or blood and that levels decline after the dissemination of the organism to extracutaneous sites in subsequent stages of infection. The data also suggest that antibiotic-refractory Lyme arthritis and post-treatment Lyme disease syndrome are associated with elevated CRP responses that are driven by inflammatory mechanisms distinct from those in active infection.
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Affiliation(s)
- Melanie Uhde
- Department of Medicine, Columbia University Medical Center, New York
| | - Mary Ajamian
- Department of Medicine, Columbia University Medical Center, New York
| | - Xueting Li
- Department of Medicine, Columbia University Medical Center, New York
| | - Gary P Wormser
- Division of Infectious Diseases, Department of Medicine, New York Medical College, Valhalla, New York
| | - Adriana Marques
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Armin Alaedini
- Department of Medicine, Columbia University Medical Center, New York
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Abstract
Amyloidosis is a disorder of protein folding in which normally soluble plasma proteins aggregate in an abnormal fibrillar form causing progressive disruption to tissue structure and organ function. This review covers systemic AA and AL amyloidosis which may arise as a consequence of chronic respiratory conditions; the manifestations of both systemic and of localised amyloid deposition within the respiratory tract and provides a summary of current approaches to diagnosis and management.
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Affiliation(s)
- H J Lachmann
- National Amyloidosis Centre and Centre for Amyloidosis and Acute Phase Proteins, Department of Medicine, Royal Free and University College Medical School, Royal Free Campus, London, UK.
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Kirschner F, Reppe K, Andresen N, Witzenrath M, Ebstein F, Kloetzel PM. Proteasome β5i Subunit Deficiency Affects Opsonin Synthesis and Aggravates Pneumococcal Pneumonia. PLoS One 2016; 11:e0153847. [PMID: 27100179 PMCID: PMC4839637 DOI: 10.1371/journal.pone.0153847] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/05/2016] [Indexed: 11/18/2022] Open
Abstract
Immunoproteasomes, harboring the active site subunits β5i/LMP7, β1i/LMP2, and β2i/MECL1 exert protective, regulatory or modulating functions during infection-induced immune responses. Immunoproteasomes are constitutively expressed in hematopoietic derived cells, constituting the first line of defense against invading pathogens. To clarify the impact of immunoproteasomes on the innate immune response against Streptococcus pneumoniae, we characterized the progression of disease and analyzed the systemic immune response in β5i/LMP7-/- mice. Our data show that β5i/LMP7 deficiency, which affected the subunit composition of proteasomes in murine macrophages and liver, was accompanied by reduced transcription of genes encoding immune modulating molecules such as pentraxins, ficolins, and collectins. The diminished opsonin expression suggested an impaired humoral immune response against invading pneumococci resulting in an aggravated systemic dissemination of S. pneumoniae in β5i/LMP7-/- mice. The impaired bacterial elimination in β5i/LMP7-/- mice was accompanied by an aggravated course of pneumonia with early mortality as a consequence of critical illness during the late phase of disease. In summary our results highlight an unsuspected role for immuno-subunits in modulating the innate immune response to extracellular bacterial infections.
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Affiliation(s)
- Felicia Kirschner
- Institut für Biochemie, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Katrin Reppe
- Department of Infectious Diseases and Pulmonary Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Nadine Andresen
- Institut für Biochemie, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases and Pulmonary Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Frédéric Ebstein
- Institut für Biochemie, Charité Universitätsmedizin Berlin, Berlin, Germany
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Sun L, Ye RD. Serum amyloid A1: Structure, function and gene polymorphism. Gene 2016; 583:48-57. [PMID: 26945629 DOI: 10.1016/j.gene.2016.02.044] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 02/24/2016] [Accepted: 02/29/2016] [Indexed: 02/07/2023]
Abstract
Inducible expression of serum amyloid A (SAA) is a hallmark of the acute-phase response, which is a conserved reaction of vertebrates to environmental challenges such as tissue injury, infection and surgery. Human SAA1 is encoded by one of the four SAA genes and is the best-characterized SAA protein. Initially known as a major precursor of amyloid A (AA), SAA1 has been found to play an important role in lipid metabolism and contributes to bacterial clearance, the regulation of inflammation and tumor pathogenesis. SAA1 has five polymorphic coding alleles (SAA1.1-SAA1.5) that encode distinct proteins with minor amino acid substitutions. Single nucleotide polymorphism (SNP) has been identified in both the coding and non-coding regions of human SAA1. Despite high levels of sequence homology among these variants, SAA1 polymorphisms have been reported as risk factors of cardiovascular diseases and several types of cancer. A recently solved crystal structure of SAA1.1 reveals a hexameric bundle with each of the SAA1 subunits assuming a 4-helix structure stabilized by the C-terminal tail. Analysis of the native SAA1.1 structure has led to the identification of a competing site for high-density lipoprotein (HDL) and heparin, thus providing the structural basis for a role of heparin and heparan sulfate in the conversion of SAA1 to AA. In this brief review, we compares human SAA1 with other forms of human and mouse SAAs, and discuss how structural and genetic studies of SAA1 have advanced our understanding of the physiological functions of the SAA proteins.
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Affiliation(s)
- Lei Sun
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Richard D Ye
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China; Institute of Chinese Medical Sciences and State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macau, SAR, China.
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Ceciliani F, Soler L, Grilli G, Marques AT, Giudice C, Lecchi C. The localization and differential expression of Serum Amyloid A in bovine liver and adipose tissue depots. Vet Immunol Immunopathol 2015; 168:35-9. [PMID: 26319890 DOI: 10.1016/j.vetimm.2015.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 08/07/2015] [Accepted: 08/10/2015] [Indexed: 11/27/2022]
Abstract
In this article the localization of the acute phase protein Serum Amyloid A (SAA) in different depots of bovine adipose tissue (AT) and liver is reported. Quantitative (Real Time) PCR was paired to immunohistochemistry after the production of a specific polyclonal antibody. SAA's mRNA was found in all analyzed AT depots included in the present study, the AT located in the withers being the major source of SAA mRNA. A polyclonal antibody was raised against bovine SAA and was used to validate gene expression analyses. Western Blotting confirmed that SAA is present in all the seven adipose tissue depots include in the present experiment. Anti-SAA polyclonal antibody also stained diffusely adipocytes. In liver, intracytoplasmic immunolabeling was observed in hepatocytes. Staining was generally mild and not diffuse: negative hepatocytes were intermixed with positive ones. A positive intracytoplasmic immunostaining was occasionally observed in endothelial cells lining small blood vessels within AT septa and liver parenchyma. Our data confirm that bovine AT may provide an important source of SAA in healthy subjects. It remains to be determined which is the contribution of AT in the serum concentration of SAA.
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Affiliation(s)
- Fabrizio Ceciliani
- Department of Veterinary Sciences and Public Health, Università di Milano, Via Celoria 10, 20133 Milano, Italy.
| | - Laura Soler
- UMR PRC - URA - INRA Val de Loire, 37380 Nouzilly, France
| | - Guido Grilli
- Department of Veterinary Sciences and Public Health, Università di Milano, Via Celoria 10, 20133 Milano, Italy
| | - Andreia T Marques
- Department of Veterinary Sciences and Public Health, Università di Milano, Via Celoria 10, 20133 Milano, Italy
| | - Chiara Giudice
- Department of Veterinary Sciences and Public Health, Università di Milano, Via Celoria 10, 20133 Milano, Italy
| | - Cristina Lecchi
- Department of Veterinary Sciences and Public Health, Università di Milano, Via Celoria 10, 20133 Milano, Italy
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Ni XC, Yi Y, Fu YP, He HW, Cai XY, Wang JX, Zhou J, Fan J, Qiu SJ. Serum amyloid A is a novel prognostic biomarker in hepatocellular carcinoma. Asian Pac J Cancer Prev 2015; 15:10713-8. [PMID: 25605163 DOI: 10.7314/apjcp.2014.15.24.10713] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
PURPOSE To investigate the prognostic value of serum amyloid A (SAA) in patients with hepatocellular carcinoma (HCC) undergoing surgery. MATERIALS AND METHODS Preoperative serum samples of 328 patients with HCC who underwent curative resection and of 47 patients with benign liver lesion were assayed. Serum levels of SAA were measured by enzyme-linked immunosorbent assay and its correlations with clinicopathological characteristics and survival were explored. RESULTS Levels of SAA were significantly higher in patients with HCC than those with benign liver lesion. There were strong correlations between preoperative serum SAA level and tumor size and more advanced BCLC stage. On univariate analysis, elevated SAA was associated with reduced disease-free survival and overall survival (p=0.001 and 0.03, respectively). Multivariate analyses showed that serum SAA level was an independent prognostic factor for overall survival (hazard ratio 2.80, p=0.01). CONCLUSIONS High SAA serum level is a novel biomarker for the prognosis of HCC patients.
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Affiliation(s)
- Xiao-Chun Ni
- Liver Cancer Institute, Zhongshan Hospital and Shanghai Medical School, Fudan University, Key Laboratory for Carcinogenesis and Cancer Invasion, The Chinese Ministry of Education, Shanghai, China E-mail :
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Ardila CM, Guzmán IC. Comparison of serum amyloid A protein and C-reactive protein levels as inflammatory markers in periodontitis. J Periodontal Implant Sci 2015; 45:14-22. [PMID: 25722922 PMCID: PMC4341202 DOI: 10.5051/jpis.2015.45.1.14] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 12/24/2014] [Indexed: 12/20/2022] Open
Abstract
PURPOSE The purpose of this study was to compare serum amyloid A (SAA) protein levels with high-sensitive C-reactive protein (hs-CRP) levels as markers of systemic inflammation in patients with chronic periodontitis. The association of serum titers of antibodies to periodontal microbiota and SAA/hs-CRP levels in periodontitis patients was also studied. METHODS A total of 110 individuals were included in this study. Patients were assessed for levels of hs-CRP and SAA. Nonfasting blood samples were collected from participants at the time of clinical examination. The diagnosis of adipose tissue disorders was made according to previously defined criteria. To determine SAA levels, a sandwich enzyme-linked immunosorbent assay was utilized. Paper points were transferred to a sterile tube to obtain a pool of samples for polymerase chain reaction processing and the identification of Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, and Tannerella forsythia. The serum level of IgG1 and IgG2 antibodies to P. gingivalis, A. actinomycetemcomitans, and T. forsythia was also determined. RESULTS SAA and hs-CRP levels were higher in periodontitis patients than in controls (P<0.05). In bivariate analysis, high levels of hs-CRP (>3 mg/L) and SAA (>10 mg/L) were significantly associated with chronic periodontitis (P=0.004). The Spearman correlation analysis between acute-phase proteins showed that SAA positively correlated with hs-CRP (r=0.218, P=0.02). In the adjusted model, chronic periodontitis was associated with high levels of SAA (odds ratio [OR], 5.5; 95% confidence interval [CI], 1.6-18.2; P=0.005) and elevated hs-CRP levels (OR, 6.1, 95% CI, 1.6-23.6; P=0.008). Increased levels of serum IgG2 antibodies to P. gingivalis were associated with high levels of SAA (OR, 3.6; 95% CI, 1.4-8.5; P=0.005) and high concentrations of hs-CRP (OR, 4.3; 95% CI, 1.9-9.8; P<0.001). CONCLUSIONS SAA and hs-CRP concentrations in patients with chronic periodontitis are comparably elevated. High serum titers of antibodies to P. gingivalis and the presence of periodontal disease are independently related to high SAA and hs-CRP levels.
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Gungor S, Ozseker F, Yalcinsoy M, Akkaya E, Can G, Eroglu H, Genc NS. Conventional markers in determination of activity of sarcoidosis. Int Immunopharmacol 2015; 25:174-9. [PMID: 25623898 DOI: 10.1016/j.intimp.2015.01.015] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/13/2015] [Accepted: 01/16/2015] [Indexed: 02/07/2023]
Abstract
AIM AND BACKGROUND Currently, there are no objective criteria to determine sarcoidosis activity. The present study aimed to discover a sensitive serum marker that would determine the activity of sarcoidosis and can be used during disease follow-up. METHODS Forty-eight patients with sarcoidosis and twenty healthy volunteers as a control group were included in the study. On their control visits, the patients were divided into active and inactive groups based on their clinical, physiological, and radiological status. Angiotensin converting enzyme (ACE), adenosine deaminase (ADA), total IgE (T-IgE), C-reactive protein (CRP), serum amyloid-A (SAA), and soluble interleukin-2 receptor (sIL2R) serum levels and classical findings of activity were compared, and the utilization of these parameters as markers of activity was investigated. RESULTS Thirty-nine cases were female (female/male: 39/9) and the mean age was 44.29±10.9years. Thirty-seven cases were active and 11 cases were inactive. Serum ACE, ADA, sIL2R, and SAA levels were significantly higher while T-IgE levels were lower in the sarcoidosis cases. A comparison of the markers between active and inactive cases showed that only SAA was significantly higher (p<0.001). sIL2R was elevated in cases with extra-pulmonary involvement (p<0.014). The area under the curve value was rather high for ADA (0.98 CI: 0.96-1.0); it also had high sensitivity (93.8%) and specificity (100%), and therefore had the highest diagnostic value (96.6%). CONCLUSION The current study showed that SAA wil be helpfull for detecting the activity of srcoidosis, IL2R measurement in exploring the extra-pulmonary organ involvement.
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Affiliation(s)
- Sinem Gungor
- Sureyyapasa Chest Diseases and Chest Surgery Training Hospital, Department of Chest Diseases, Istanbul, Turkey.
| | - Ferhan Ozseker
- Sureyyapasa Chest Diseases and Chest Surgery Training Hospital, Department of Immunology and Allergy, Istanbul, Turkey.
| | - Murat Yalcinsoy
- Sureyyapasa Chest Diseases and Chest Surgery Training Hospital, Department of Chest Diseases, Istanbul, Turkey.
| | - Esen Akkaya
- Sureyyapasa Chest Diseases and Chest Surgery Training Hospital, Department of Chest Diseases, Istanbul, Turkey.
| | - Günay Can
- Istanbul University, Cerrahpaşa Medical Faculty, Department of Public Health, Istanbul, Turkey.
| | - Hacer Eroglu
- Başkent University, Department of Biochemistry, Istanbul, Turkey.
| | - Nilgün Sema Genc
- Istanbul University, Istanbul Medical Faculty, Department of Biochemistry, Istanbul, Turkey.
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Xie X, Ma YT, Yang YN, Li XM, Zheng YY, Fu ZY, Ma X, Liu F, Huang Y, Chen BD. SAA1 genetic polymorphisms are associated with plasma glucose concentration in non-diabetic subjects. Clin Chem Lab Med 2014; 51:2331-4. [PMID: 23940069 DOI: 10.1515/cclm-2013-0097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 07/19/2013] [Indexed: 11/15/2022]
Abstract
BACKGROUND Serum amyloid A (SAA) was reported to be associated with insulin resistance and type-2 diabetes. The present study aimed to investigate the association of SAA genetic polymorphisms with plasma glucose levels in non-diabetic subjects. METHODS All participants (n=1220) were selected from subjects participating in the Cardiovascular Risk Survey (CRS) study. Five single-nucleotide polymorphisms (SNPs) (rs2229338, rs12218, rs4638289, rs7131332 and rs11603089) of SAA gene were genotyped using polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) analysis. RESULTS In the present study, we found rs2229338, rs4638289 and rs12218 were significantly associated with plasma glucose levels in a dominate model, recessive model or additive model before and after multivariate adjustment (all p<0.05). These associations were not found in rs7131332 and rs11603089 before and after adjustment of key co-variants. CONCLUSIONS The genetic polymorphisms of SAA1 were associated with plasma glucose levels in non-diabetic subjects.
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Serum amyloid A-related inflammation is lowered by increased fruit and vegetable intake, while high-sensitive C-reactive protein, IL-6 and E-selectin remain unresponsive. Br J Nutr 2014; 112:1129-36. [DOI: 10.1017/s0007114514001639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The present study assessed whether increased fruit and vegetable (F&V) intake reduced the concentrations of the inflammatory marker serum amyloid A (SAA) in serum, HDL2 and HDL3 and whether the latter reduction influenced any of the functional properties of these HDL subfractions. The present study utilised samples from two previous studies: (1) the FAVRIT (Fruit and Vegetable Randomised Intervention Trial) study – hypertensive subjects (systolic blood pressure (BP) range 140–190 mmHg; diastolic BP range 90–110 mmHg) were randomised to receive a 1-, 3- or 6-portion F&V/d intervention for 8 weeks, and (2) the ADIT (Ageing and Dietary Intervention Trial) study – older subjects (65–85 years) were randomised to receive a 2- or 5-portion F&V/d intervention for 16 weeks. HDL2 and HDL3 were isolated by rapid ultracentrifugation. Measurements included the following: serum high-sensitive C-reactive protein (hsCRP) by an immunoturbidimetric assay; serum IL-6 and E-selectin and serum-, HDL2- and HDL3-SAA by ELISA procedures; serum-, HDL2- and HDL3-cholesterol ester transfer protein (CETP) activity by a fluorometric assay. Although the concentrations of hsCRP, IL-6 and E-selectin were unaffected by increasing F&V intake in both studies (P>0·05 for all comparisons), those of SAA in HDL3 decreased in the FAVRIT cohort (P= 0·049) and those in HDL2 and HDL3 decreased in the ADIT cohort (P= 0·035 and 0·032), which was accompanied by a decrease in the activity of CETP in HDL3 in the FAVRIT cohort (P= 0·010) and in HDL2 in the ADIT cohort (P= 0·030). These results indicate that SAA responds to increased F&V intake, while other inflammatory markers remain unresponsive, and this leads to changes in HDL2 and HDL3, which may influence their antiatherogenic potential. Overall, the present study provides tangible evidence of the effectiveness of increased F&V intake, which may be of use to health policy makers and the general public.
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Yang RZ, Blumenthal JB, Glynn NM, Lee MJ, Goldberg AP, Gong DW, Ryan AS. Decrease of circulating SAA is correlated with reduction of abdominal SAA secretion during weight loss. Obesity (Silver Spring) 2014; 22:1085-90. [PMID: 24311467 PMCID: PMC3968182 DOI: 10.1002/oby.20657] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 10/23/2013] [Indexed: 01/21/2023]
Abstract
OBJECTIVE The study goal was to determine the effect of weight loss (WL) alone and with aerobic exercise (WL + AEX) on serum amyloid A (SAA) levels and adipose SAA secretion from gluteal and abdominal depots. METHODS Ninety-six overweight or obese postmenopausal women undertook a 6-month WL alone (n = 47) or with AEX training (n = 49) (6 months WL and WL + AEX are considered WL when groups were combined). Their serum SAA levels, body weight, and adipose SAA secretion ex vivo from gluteal and abdominal depot were measured before and after WL interventions. RESULTS The participants lost an average of 8% body weight with a 10% decrease of serum SAA. Serum SAA levels remained significantly correlated with body weight before and after WL. However, the changes of serum SAA level did not correlate with changes of body weight. The gluteal adipose tissue secreted ∼50% more SAA than the abdominal tissue, but the changes of abdominal, but not gluteal, SAA secretion correlated (R(2) = 0.19, p < 0.01) with those of serum SAA levels during WL. CONCLUSIONS No linear correlation between the decrease in systemic SAA and WL was found. There is a depot-dependent difference in adipose SAA secretion and abdominal SAA secretion, which may partially account for the systemic SAA reduction during WL.
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Affiliation(s)
- Rong-Ze Yang
- Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine
| | - Jacob B. Blumenthal
- Division of Gerontology and Geriatric Medicine, University of Maryland School of Medicine
- VA Research Service, Geriatric Research, Education and Clinical Center, Baltimore Veterans Administration Medical Center
| | - Nicole M. Glynn
- Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine
| | - Mi-Jeong Lee
- Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine
| | - Andrew P. Goldberg
- Division of Gerontology and Geriatric Medicine, University of Maryland School of Medicine
- VA Research Service, Geriatric Research, Education and Clinical Center, Baltimore Veterans Administration Medical Center
| | - Da-Wei Gong
- Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine
- VA Research Service, Geriatric Research, Education and Clinical Center, Baltimore Veterans Administration Medical Center
| | - Alice S. Ryan
- Division of Gerontology and Geriatric Medicine, University of Maryland School of Medicine
- VA Research Service, Geriatric Research, Education and Clinical Center, Baltimore Veterans Administration Medical Center
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