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Peacock ZS, Schwab JH, Faquin WC, Hornicek FJ, Benita Y, Ebb DH, Kaban LB. Genetic Analysis of Giant Cell Lesions of the Maxillofacial and Axial/Appendicular Skeletons. J Oral Maxillofac Surg 2016; 75:298-308. [PMID: 27546031 DOI: 10.1016/j.joms.2016.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/19/2016] [Accepted: 07/19/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE To compare the genetic and protein expression of giant cell lesions (GCLs) of the maxillofacial (MF) and axial/appendicular (AA) skeletons. We hypothesized that when grouped according to biologic behavior and not simply by location, MF and AA GCLs would exhibit common genetic characteristics. MATERIALS AND METHODS This was a prospective and retrospective study of patients with GCLs treated at Massachusetts General Hospital from 1993 to 2008. In a preliminary prospective study, fresh tissue from 6 aggressive tumors each from the MF and AA skeletons (n = 12 tumors) was obtained. RNA was extracted and amplified from giant cells (GCs) and stromal cells first separated by laser capture microdissection. Genes highly expressed by GCs and stroma at both locations were determined using an Affymetrix GeneChip analysis. As confirmation, a tissue microarray (TMA) was created retrospectively from representative tissue of preserved pathologic specimens to assess the protein expression of the commonly expressed genes found in the prospective study. Quantification of immunohistochemical staining of MF and AA lesions was performed using Aperio image analysis to determine whether immunoreactivity was predictive of aggressive or nonaggressive behavior. RESULTS Five highly ranked genes were found commonly in GCs and stroma at each location: matrix metalloproteinase-9 (MMP-9), cathepsin K (CTSK), T-cell immune regulator-1 (TCIRG1), C-type lectin domain family-11, and zinc finger protein-836. MF (n = 40; 32 aggressive) and AA (n = 48; 28 aggressive) paraffin-embedded tumors were included in the TMA. The proteins CTSK, MMP-9, and TCIRG1 were confirmed to have abundant expression within both MF and AA lesions. Only the staining levels for TCIRG1 within the GCs predicted the clinical behavior of the MF lesions. CONCLUSIONS MMP-9, CTSK, and TCIRG1 are commonly expressed by GCLs of the MF and AA skeletons. This supports the hypothesis that these lesions are similar but at different locations. TCIRG1 has not been previously associated with GCLs and could be a potential target for molecular diagnosis and/or therapy.
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Affiliation(s)
- Zachary S Peacock
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital and Harvard School of Dental Medicine, Boston, MA.
| | - Joseph H Schwab
- Assistant Professor, Department of Orthopaedics, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - William C Faquin
- Associate Professor, Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Francis J Hornicek
- Associate Professor, Department of Orthopaedics, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Yair Benita
- Former Fellow, Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - David H Ebb
- Assistant Professor, Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Leonard B Kaban
- Walter Guralnik Distinguished Professor, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital and Harvard School of Dental Medicine, Boston, MA
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Cytoplasmic Drosha Is Aberrant in Precancerous Lesions of Gastric Carcinoma and Its Loss Predicts Worse Outcome for Gastric Cancer Patients. Dig Dis Sci 2016; 61:1080-90. [PMID: 26694172 DOI: 10.1007/s10620-015-3986-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 11/30/2015] [Indexed: 01/13/2023]
Abstract
BACKGROUND The nuclear localization of Drosha is critical for its function as a microRNA maturation regulator. Dephosphorylation of Drosha at serine 300 and serine 302 disrupts its nuclear localization, and aberrant distribution of Drosha has been detected in some tumors. AIMS The purpose of the present study was to assess cytoplasmic/nuclear Drosha expression in gastric cancer carcinogenesis and progression. METHODS Drosha expression and its subcellular location was investigated by immunohistochemical staining of a set of tissue microarrays composed of normal adjacent tissues (374), chronic gastritis (137), precancerous lesions (94), and gastric adenocarcinoma (829) samples, and in gastric cancer cell lines with varying differentiation by immunofluorescence and western blot assay. RESULTS Gradual loss of cytoplasmic Drosha was accompanied by tumor progression in both gastric cancer tissues and cell lines, and was inversely associated with tumor volume (P = 0.002), tumor grade (P < 0.001), tumor stage (P = 0.018), and distant metastasis (P = 0.026). Aberrant high levels of cytoplasmic Drosha were apparent in intestinal metaplasia and dysplasia tissues. The levels of nuclear Drosha were sharply decreased in chronic gastritis and maintained through precancerous lesions to gastric cancer. High levels of cytoplasmic Drosha predicted longer survival (LR = 7.088, P = 0.008) in gastric cancer patients. CONCLUSIONS Our data provide novel insights into gastric cancer that cytoplasmic Drosha potentially plays a role in preventing carcinogenesis and tumor progression, and may be an independent predictor of patient outcome.
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Manojlovic-Gacic E, Skender-Gazibara M, Popovic V, Soldatovic I, Boricic N, Raicevic S, Pekic S, Doknic M, Miljic D, Alafuzoff I, Pontén F, Casar-Borota O. Oncogene-Induced Senescence in Pituitary Adenomas--an Immunohistochemical Study. Endocr Pathol 2016; 27:1-11. [PMID: 26573928 DOI: 10.1007/s12022-015-9405-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Oncogene-induced senescence (OIS) serves as an initial barrier to cancer development, being proposed as a possible explanation for the usually benign behavior of the pituitary adenomas. We aimed to explore the immunohistochemical expression of the OIS markers, senescence-associated lysosomal β-galactosidase (SA-β-GAL), p16, and p21 in different types of 345 pituitary adenomas and compared it with the expression in the normal pituitary and in the specimens from the repeated surgeries. SA-β-GAL was overexpressed in the pituitary adenomas, compared to the normal pituitaries. Growth hormone (GH) producing adenomas showed the strongest SA-β-GAL, with densely granulated (DG)-GH adenomas more reactive than the sparsely granulated (SG). Nuclear p21 was decreased in the adenomas, except for the SG-GH adenomas that had higher p21 than the normal pituitaries and the other adenomas. p16 was significantly lower in the adenomas, without type-related differences. SA-β-GAL was slightly lower and p16 slightly higher in the recurrences. Our findings indicate alterations of the senescence program in the different types of pituitary adenomas. Activation of senescence in the pituitary adenomas presents one possible explanation for their usually benign behavior, at least in the GH adenomas that show a synchronous increase of two OIS markers. However, subdivision into GH adenoma subtypes reveals differences that reflect complex regulatory mechanisms influenced by the interplay between the granularity pattern and the hormonal factors, with possible impact on the different clinical behavior of the SG- and DG-GH adenoma subtypes. p16 seems to have a more prominent role in the pituitary tumorigenesis than in the senescence. Recurrent growth in a subset of the pituitary adenomas is not associated with consistent changes in the senescence pattern.
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Affiliation(s)
- Emilija Manojlovic-Gacic
- Institute of Pathology, Medical Faculty, University of Belgrade, Dr Subotica 1, Belgrade, Serbia.
| | - Milica Skender-Gazibara
- Institute of Pathology, Medical Faculty, University of Belgrade, Dr Subotica 1, Belgrade, Serbia
| | - Vera Popovic
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, Dr Subotica 13, Belgrade, Serbia
- Medical Faculty, University of Belgrade, Dr Subotica 8, Belgrade, Serbia
| | - Ivan Soldatovic
- Medical Faculty, University of Belgrade, Dr Subotica 8, Belgrade, Serbia
| | - Novica Boricic
- Institute of Pathology, Medical Faculty, University of Belgrade, Dr Subotica 1, Belgrade, Serbia
| | - Savo Raicevic
- Neurosurgery Clinic, Clinical Center of Serbia, Koste Todorovica 4, Belgrade, Serbia
| | - Sandra Pekic
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, Dr Subotica 13, Belgrade, Serbia
- Medical Faculty, University of Belgrade, Dr Subotica 8, Belgrade, Serbia
| | - Mirjana Doknic
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, Dr Subotica 13, Belgrade, Serbia
- Medical Faculty, University of Belgrade, Dr Subotica 8, Belgrade, Serbia
| | - Dragana Miljic
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, Dr Subotica 13, Belgrade, Serbia
- Medical Faculty, University of Belgrade, Dr Subotica 8, Belgrade, Serbia
| | - Irina Alafuzoff
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Dag Hammarskjölds väg 20, Uppsala, Sweden
- Department of Clinical Pathology and Cytology, Uppsala University Hospital, Rudbeck Laboratory, Dag Hammarskjölds väg 20, Uppsala, Sweden
| | - Fredrik Pontén
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Rudbeck Laboratory, Dag Hammarskjölds väg 20, Uppsala, Sweden
| | - Olivera Casar-Borota
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Dag Hammarskjölds väg 20, Uppsala, Sweden
- Department of Clinical Pathology and Cytology, Uppsala University Hospital, Rudbeck Laboratory, Dag Hammarskjölds väg 20, Uppsala, Sweden
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Juranek JK, Daffu GK, Wojtkiewicz J, Lacomis D, Kofler J, Schmidt AM. Receptor for Advanced Glycation End Products and its Inflammatory Ligands are Upregulated in Amyotrophic Lateral Sclerosis. Front Cell Neurosci 2015; 9:485. [PMID: 26733811 PMCID: PMC4686801 DOI: 10.3389/fncel.2015.00485] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 11/30/2015] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal motor neuron disorder of largely unknown pathogenesis. Recent studies suggest that enhanced oxidative stress and neuroinflammation contribute to the progression of the disease. Mounting evidence implicates the receptor for advanced glycation end-products (RAGE) as a significant contributor to the pathogenesis of certain neurodegenerative diseases and chronic conditions. It is hypothesized that detrimental actions of RAGE are triggered upon binding to its ligands, such as AGEs (advanced glycation end products), S100/calgranulin family members, and High Mobility Group Box-1 (HMGB1) proteins. Here, we examined the expression of RAGE and its ligands in human ALS spinal cord. Tissue samples from age-matched human control and ALS spinal cords were tested for the expression of RAGE, carboxymethyllysine (CML) AGE, S100B, and HMGB1, and intensity of the immunofluorescent and immunoblotting signals was assessed. We found that the expression of both RAGE and its ligands was significantly increased in the spinal cords of ALS patients versus age-matched control subjects. Our study is the first report describing co-expression of both RAGE and its ligands in human ALS spinal cords. These findings suggest that further probing of RAGE as a mechanism of neurodegeneration in human ALS is rational.
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Affiliation(s)
- Judyta K Juranek
- Department of Surgery, Columbia University Medical CenterNew York, NY, USA; Department of Medicine, New York University Langone Medical Center - New York University School of MedicineNew York, NY, USA
| | - Gurdip K Daffu
- Department of Medicine, New York University Langone Medical Center - New York University School of Medicine New York, NY, USA
| | - Joanna Wojtkiewicz
- Department of Pathophysiology, University of Warmia and Mazury Olsztyn, Poland
| | - David Lacomis
- Department of Neurology, University of Pittsburgh Pittsburgh, PA, USA
| | - Julia Kofler
- Department of Pathology, University of Pittsburgh Pittsburgh, PA, USA
| | - Ann Marie Schmidt
- Department of Surgery, Columbia University Medical CenterNew York, NY, USA; Department of Medicine, New York University Langone Medical Center - New York University School of MedicineNew York, NY, USA
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Lu W, Gao J, Yang J, Cao Y, Jiang L, Li M, Zhang Y, Zhou J, Liu Y. Down-Regulated Phosphoglycerate Kinase 1 Expression Is Associated With Poor Prognosis in Patients With Gallbladder Cancer. Medicine (Baltimore) 2015; 94:e2244. [PMID: 26656369 PMCID: PMC5008514 DOI: 10.1097/md.0000000000002244] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
To evaluate prognostic significance of phosphoglycerate kinase 1 (PGK1) protein expression in patients with gallbladder cancer (GBC).Ninety-five patients who underwent surgical resection for GBC between January 2004 and December 2010 were enrolled. Overall survival (OS) and disease-free survival (DFS) were evaluated over a 10-year follow-up. PGK1 expression was assessed by tissue microarray and immunohistochemistry. Prognostic significance was analyzed using multivariate Cox regression.PGK1 was highly expressed in all gallbladder mucosa. Decreased PGK1 expression was detected in 54.7% (52/95) of patients with GBC. It was significantly down-regulated in GBC samples compared with that in gallbladder mucosa (P < 0.0001), and was associated with multiple clinicopathological factors. Multivariate survival analysis showed that low PGK1 expression was associated with shorter OS (median 12.8 vs 45.4 months; hazard ratio [HR] = 3.077; 95% confidence interval [CI], 1.373-6.897; P = 0.006) and DFS (median 8.3 vs 37.9 months; HR = 2.988; 95% CI, 1.315-6.790; P = 0.009), indicating that PGK1 expression was an independent prognostic factor in patients with GBC.Low PGK1 expression was associated with progression in patients with GBC. PGK1 expression could be a useful prognostic biomarker for GBC.
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Affiliation(s)
- Wei Lu
- From the General Surgery Department and Research Institute, Xinhua Hospital, Affiliated with School of Medicine, Shanghai Jiao Tong University, Shanghai, China (WL, YC, ML, YL); Center of Clinical Epidemiology and Evidence-Based Medicine, Fudan University, Shanghai, China (JG); Institute of Biliary Tract Diseases Research, School of Medicine (WL, YC, LJ, ML, YZ, JZ, YL) and Institute of Social Cognitive and Behavioral Sciences (WL), Shanghai Jiao Tong University, Shanghai, China; and Rush Alzheimer's Disease Center (JY) and Department of Neurological Sciences (JY), Rush University Medical Center, Chicago, IL
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Nagai H, Kuwahira I, Schwenke DO, Tsuchimochi H, Nara A, Ogura S, Sonobe T, Inagaki T, Fujii Y, Yamaguchi R, Wingenfeld L, Umetani K, Shimosawa T, Yoshida KI, Uemura K, Pearson JT, Shirai M. Pulmonary Macrophages Attenuate Hypoxic Pulmonary Vasoconstriction via β3AR/iNOS Pathway in Rats Exposed to Chronic Intermittent Hypoxia. PLoS One 2015; 10:e0131923. [PMID: 26132492 PMCID: PMC4489089 DOI: 10.1371/journal.pone.0131923] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 06/08/2015] [Indexed: 12/03/2022] Open
Abstract
Chronic intermittent hypoxia (IH) induces activation of the sympathoadrenal system, which plays a pivotal role in attenuating hypoxic pulmonary vasoconstriction (HPV) via central β1-adrenergic receptors (AR) (brain) and peripheral β2AR (pulmonary arteries). Prolonged hypercatecholemia has been shown to upregulate β3AR. However, the relationship between IH and β3AR in the modification of HPV is unknown. It has been observed that chronic stimulation of β3AR upregulates inducible nitric oxide synthase (iNOS) in cardiomyocytes and that IH exposure causes expression of iNOS in RAW264.7 macrophages. iNOS has been shown to have the ability to dilate pulmonary vessels. Hence, we hypothesized that chronic IH activates β3AR/iNOS signaling in pulmonary macrophages, leading to the promotion of NO secretion and attenuated HPV. Sprague-Dawley rats were exposed to IH (3-min periods of 4–21% O2) for 8 h/d for 6 weeks. The urinary catecholamine concentrations of IH rats were high compared with those of controls, indicating activation of the sympathoadrenal system following chronic IH. Interestingly, chronic IH induced the migration of circulating monocytes into the lungs and the predominant increase in the number of pro-inflammatory pulmonary macrophages. In these macrophages, both β3AR and iNOS were upregulated and stimulation of the β3AR/iNOS pathway in vitro caused them to promote NO secretion. Furthermore, in vivo synchrotron radiation microangiography showed that HPV was significantly attenuated in IH rats and the attenuated HPV was fully restored by blockade of β3AR/iNOS pathway or depletion of pulmonary macrophages. These results suggest that circulating monocyte-derived pulmonary macrophages attenuate HPV via activation of β3AR/iNOS signaling in chronic IH.
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Affiliation(s)
- Hisashi Nagai
- Department of Forensic Medicine, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
- Department of Clinical Laboratory Medicine, The University of Tokyo, Tokyo, Japan
- * E-mail:
| | - Ichiro Kuwahira
- Department of Pulmonary Medicine, Tokai University Tokyo Hospital, Tokyo, Japan
| | - Daryl O. Schwenke
- Department of Physiology, Heart Otago, University of Otago, Dunedin, New Zealand
| | - Hirotsugu Tsuchimochi
- Department of Cardiac Physiology, National Cerebral & Cardiovascular Center, Osaka, Japan
| | - Akina Nara
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
| | - Sayoko Ogura
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
- Department of Clinical Laboratory Medicine, The University of Tokyo, Tokyo, Japan
- Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
| | - Takashi Sonobe
- Department of Cardiac Physiology, National Cerebral & Cardiovascular Center, Osaka, Japan
| | - Tadakatsu Inagaki
- Department of Cardiac Physiology, National Cerebral & Cardiovascular Center, Osaka, Japan
| | - Yutaka Fujii
- Department of Cardiac Physiology, National Cerebral & Cardiovascular Center, Osaka, Japan
| | - Rutsuko Yamaguchi
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
| | - Lisa Wingenfeld
- Institute of Forensic Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Keiji Umetani
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan
| | - Tatsuo Shimosawa
- Department of Clinical Laboratory Medicine, The University of Tokyo, Tokyo, Japan
| | - Ken-ichi Yoshida
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
- Department of Forensic Medicine, Tokyo Medical University, Tokyo, Japan
| | - Koichi Uemura
- Department of Forensic Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - James T. Pearson
- Monash Biomedical Imaging Facility and Department of Physiology, Monash University, Melbourne, Australia
- Imaging and Medical therapy Beamline, Australian Synchrotron, Clayton, Australia
| | - Mikiyasu Shirai
- Department of Cardiac Physiology, National Cerebral & Cardiovascular Center, Osaka, Japan
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Kostakis ID, Agrogiannis G, Vaiopoulos AG, Mylona E, Patsouris E, Kouraklis G, Koutsilieris M. A clinicopathological analysis of KISS1 and KISS1R expression in colorectal cancer. APMIS 2015; 123:629-37. [PMID: 26010933 DOI: 10.1111/apm.12397] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 03/11/2015] [Indexed: 02/01/2023]
Abstract
Kisspeptins, the products of the KISS1 gene have tumor suppressing and antimetastatic properties. We aimed to study KISS1 and KISS1R expression in colorectal cancer. We analyzed KISS1 and KISS1R expression using immunohistochemistry and image analysis in normal and malignant tissue samples from 111 patients with colorectal adenocarcinoma. KISS1 expression was much higher in the normal than in the malignant colonic mucosa. Regarding malignant tissues, KISS1 levels were higher in larger tumors, in stage III and IV cancers, in cancers with lymph node metastasis and in tumors located in the distal part of the large intestine. Patients with greater KISS1 levels had worse prognosis. No KISS1R expression was detected in normal or malignant tissues or in liver metastases. KISS1 expression is reduced during the malignant transformation of the colonic mucosa. However, larger and advanced colorectal cancers express more KISS1, without reaching the former normal levels, and increased KISS1 levels are associated with worse prognosis. Finally, neither the normal nor the malignant colonic epithelial cells produce KISS1R.
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Affiliation(s)
- Ioannis D Kostakis
- Second Department of Propedeutic Surgery, "Laiko" General Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece.,Department of Experimental Physiology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - George Agrogiannis
- First Department of Pathology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Aristeidis G Vaiopoulos
- Second Department of Propedeutic Surgery, "Laiko" General Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece.,Department of Experimental Physiology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Eleni Mylona
- First Department of Pathology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Efstratios Patsouris
- First Department of Pathology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Gregory Kouraklis
- Second Department of Propedeutic Surgery, "Laiko" General Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Michael Koutsilieris
- Department of Experimental Physiology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
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Kalra J, Dragowska WH, Bally MB. Using Pharmacokinetic Profiles and Digital Quantification of Stained Tissue Microarrays as a Medium-Throughput, Quantitative Method for Measuring the Kinetics of Early Signaling Changes Following Integrin-Linked Kinase Inhibition in an In Vivo Model of Cancer. J Histochem Cytochem 2015; 63:691-709. [PMID: 25940338 PMCID: PMC4804727 DOI: 10.1369/0022155415587978] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 04/27/2015] [Indexed: 12/24/2022] Open
Abstract
A small molecule inhibitor (QLT0267) targeting integrin-linked kinase is able to slow breast tumor growth in vivo; however, the mechanism of action remains unknown. Understanding how targeting molecules involved in intersecting signaling pathways impact disease is challenging. To facilitate this understanding, we used tumor tissue microarrays (TMA) and digital image analysis for quantification of immunohistochemistry (IHC) in order to investigate how QLT0267 affects signaling pathways in an orthotopic model of breast cancer over time. Female NCR nude mice were inoculated with luciferase-positive human breast tumor cells (LCC6Luc) and tumor growth was assessed by bioluminescent imaging (BLI). The plasma levels of QLT0267 were determined by LC-MS/MS methods following oral dosing of QLT0267 (200 mg/kg). A TMA was constructed using tumor tissue collected at 2, 4, 6, 24, 78 and 168 hr after treatment. IHC methods were used to assess changes in ILK-related signaling. The TMA was digitized, and Aperio ScanScope and ImageScope software were used to provide semi-quantitative assessments of staining levels. Using medium-throughput IHC quantitation, we show that ILK targeting by QLT0267 in vivo influences tumor physiology through transient changes in pathways involving AKT, GSK-3 and TWIST accompanied by the translocation of the pro-apoptotic protein BAD and an increase in Caspase-3 activity.
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Affiliation(s)
- Jessica Kalra
- Experimental Therapeutics BC Cancer Agency, British Columbia, Canada (JK,WHD,MBB),Langara College, Vancouver, British Columbia, Canada (JK)
| | - Weislawa H Dragowska
- Experimental Therapeutics BC Cancer Agency, British Columbia, Canada (JK,WHD,MBB)
| | - Marcel B Bally
- Experimental Therapeutics BC Cancer Agency, British Columbia, Canada (JK,WHD,MBB),Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia (MBB),Department of Biochemistry, University of British Columbia, Vancouver, British Columbia (MBB),Faculty of Pharm. Sciences, University of British Columbia, Vancouver, British Columbia (MBB),Center for Drug Research and Development Vancouver, British Columbia, Canada (MBB)
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Zhong WQ, Chen G, Zhang W, Xiong XP, Ren JG, Zhao Y, Liu B, Zhao YF. Down-regulation of connexin43 and connexin32 in keratocystic odontogenic tumours: potential association with clinical features. Histopathology 2015; 66:798-807. [PMID: 25270527 DOI: 10.1111/his.12569] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 09/26/2014] [Indexed: 01/08/2023]
Abstract
AIMS The objective of this study was to explore the potential involvement of connexin43 (Cx43) and connexin32 (Cx32), two vital members of the connexin families, in the pathogenesis of keratocystic odontogenic tumours (KCOT). METHODS AND RESULTS The expression levels of Cx43 and Cx32 in human KCOT and normal oral mucosa (OM) tissues were measured using immunohistochemistry and real-time quantitative polymerase chain reaction (qPCR). The relationship between Cx43 and Cx32 expression and markers of proliferation [proliferating cell nuclear antigen (PCNA), cyclin D1], anti-apoptosis [B cell lymphoma 2 (Bcl-2)] and autophagy [light chain 3 (LC3), Sequestosome 1 p62 (p62)] was then investigated in the KCOT samples. The results showed that Cx43 and Cx32 expression was down-regulated significantly in KCOT samples relative to OM samples. Meanwhile, the expression levels of Cx43 and Cx32 were correlated negatively with the expression levels of PCNA, cyclin D1, Bcl-2, LC3 and p62, as confirmed further by double-labelling immunofluorescence analyses. CONCLUSIONS This study reveals for the first time that Cx43 and Cx32 are down-regulated in KCOT and suggests an association with growth regulation, anti-apoptosis and autophagy in KCOT.
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Affiliation(s)
- Wen-Qun Zhong
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Ren ZX, Yu HB, Li JS, Shen JL, Du WS. Suitable parameter choice on quantitative morphology of A549 cell in epithelial-mesenchymal transition. Biosci Rep 2015; 35:e00202. [PMID: 26182364 PMCID: PMC4613694 DOI: 10.1042/bsr20150070] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/07/2015] [Accepted: 04/20/2015] [Indexed: 01/28/2023] Open
Abstract
Evaluation of morphological changes in cells is an integral part of study on epithelial to mesenchymal transition (EMT), however, only a few papers reported the changes in quantitative parameters and no article compared different parameters for demanding better parameters. In the study, the purpose was to investigate suitable parameters for quantitative evaluation of EMT morphological changes. A549 human lung adenocarcinoma cell line was selected for the study. Some cells were stimulated by transforming growth factor-β1 (TGF-β1) for EMT, and other cells were as control without TGF-β1 stimulation. Subsequently, cells were placed in phase contrast microscope and three arbitrary fields were captured and saved with a personal computer. Using the tools of Photoshop software, some cells in an image were selected, segmented out and exchanged into unique hue, and other part in the image was shifted into another unique hue. The cells were calculated with 29 morphological parameters by Image Pro Plus software. A parameter between cells with or without TGF-β1 stimulation was compared statistically and nine parameters were significantly different between them. Receiver operating characteristic curve (ROC curve) of a parameter was described with SPSS software and F-test was used to compare two areas under the curves (AUCs) in Excel. Among them, roundness and radius ratio were the most AUCs and were significant higher than the other parameters. The results provided a new method with quantitative assessment of cell morphology during EMT, and found out two parameters, roundness and radius ratio, as suitable for quantification.
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Affiliation(s)
- Zhou-Xin Ren
- Institute of Gerontology, Henan University of Traditional Chinese Medicine, Longzihu University Park, Zhengzhou, Henan 450046, China
| | - Hai-Bin Yu
- First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, Henan 450000, China
| | - Jian-Sheng Li
- Institute of Gerontology, Henan University of Traditional Chinese Medicine, Longzihu University Park, Zhengzhou, Henan 450046, China
| | - Jun-Ling Shen
- First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, Henan 450000, China
| | - Wen-Sen Du
- Affiliated Hospital of Henan Academy of Traditional Chinese Medicine, Zhengzhou, Henan 450004, China
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Quantitative analysis of markers of podocyte injury in the rat puromycin aminonucleoside nephropathy model. ACTA ACUST UNITED AC 2015; 67:171-7. [DOI: 10.1016/j.etp.2014.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 11/19/2014] [Indexed: 01/09/2023]
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Campbell TM, Trudel G, Laneuville O. Knee flexion contractures in patients with osteoarthritis: clinical features and histologic characterization of the posterior capsule. PM R 2014; 7:466-73. [PMID: 25511691 DOI: 10.1016/j.pmrj.2014.12.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 11/15/2014] [Accepted: 12/01/2014] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To (1) identify demographic and clinical factors associated with knee flexion contracture (KFlC) in the setting of osteoarthritis (OA) and (2) histologically compare the posterior knee capsule of patients with OA with and without KFlC. DESIGN Cross-sectional study. SETTING Primary care, including private and institutional practice. PATIENTS Thirteen patients with primary OA and KFlC and 8 patients with primary OA without KFlC. METHODS We compared the KFlC and non-KFlC groups to identify demographic and clinical factors associated with KFlC. We examined the histology of the posterior knee capsules of 9 patients with KFlC and 6 without. MAIN OUTCOME MEASUREMENTS Patient demographic and clinical factors. For histology we measured the proportional composition of collagenous, adipose, and synovial tissues; fibroblast and adipocyte cellularity; and synovial thickness. RESULTS Patients with contracture had longer duration of OA, reduced flexion of the surgical knee, and reduced extension of the contralateral knee (P = .04, <.01, and <.01 respectively). Histologically, there was a greater proportion of collagenous tissue and a lower proportion of adipose and synovial tissues in the contracture group than in the noncontracture group; however, the differences were not statistically significant. Cellularity was similar between the 2 groups. CONCLUSIONS Longer duration of knee OA, reduced surgical knee flexion, and reduced contralateral, nonsurgical knee extension were associated with KFlC in the OA knee undergoing total arthroplasty. Monitoring bilateral knee range of motion in patients with longer-duration OA could allow earlier intervention, reducing functional loss. Capsular tissue composition analysis may indicate a fibrotic disease process. Further research in which a larger sample size is used will help clarify these novel findings.
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Affiliation(s)
- Thomas Mark Campbell
- Department of Medicine, The Ottawa Hospital Rehabilitation Centre, University of Ottawa, Ottawa, ON, Canada(∗).
| | - Guy Trudel
- Department of Medicine, The Ottawa Hospital Rehabilitation Centre, University of Ottawa, Ottawa, ON, Canada(†)
| | - Odette Laneuville
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada(‡)
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Nicolopoulou-Stamati P, Tsipis A, Chelidonis G, Patsouris E, Athanassiadou P, Gonidi M, Athanassiadou AM. Prognostic value of COX-2, P53, and EZH-2 evaluated by quantitative image analysis in premalignant and malignant breast lesions. Diagn Cytopathol 2014; 43:294-300. [PMID: 25355039 DOI: 10.1002/dc.23217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 04/09/2014] [Accepted: 10/06/2014] [Indexed: 11/08/2022]
Abstract
BACKGROUND Cytological differential diagnosis of atypical hyperplasia and well differentiated breast carcinoma may be challenging, because sometimes there is an overlap between the cytomorphological features of these lesions. The aim of the study was to investigate COX-2, EZH-2, p53 expression in carcinomas and the gray zone of breast cytology categories of atypical hyperplastic lesions with regard to biological behavior of the tumor. METHODS FNA speciments from 100 patients with breast hyperplastic lesions and cancer were investigated by immunocytochemistry and a quantitative analysis for COX-2, p53, and EZH-2. RESULTS Extent of staining for COX-2 correlated with percentage of positive for EZH-2 (P < 0.0001) and p53 nuclei (P < 0.001). The intensity of COX-2 was lower in the carcinoma group (118.57 ± 12.43) than in the hyperplastic (127.16 ± 11.71) group (P = 0.006). On the contrary the mean value of staining extent was greater in the adenocarcinoma cases (15.96 ± 13.03) than in hyperplastic (4.04 ± 1.94) cases (P < 0.0001). The percentage of EZH-2 and p53 positive cells correlated with the histological type of the lesions (P = 0.001 and P = 0.011, respectively). There was also a statistically significant relation between tumor size and expression of COX-2 (P = 0.007) and EZH-2 (P = 0.010). CONCLUSION Our study showed that the expression of COX-2, EZH-2, and p53 as determined by immunocytochemistry at quantitative level may be a predictor for distinguishing cytologically atypical hyperplastic from malignant breast lesions and may be regarded as potential prognostic factor in breast cancer patients.
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Affiliation(s)
- Polyxeni Nicolopoulou-Stamati
- National and Kapodistrian University of Athens, School of Medicine, First Department of Pathology and Cytology Unit, 1st Pathology Laboratory, 11527, Athens, Greece
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Nagai H, Kuwahira I, Schwenke DO, Tsuchimochi H, Nara A, Inagaki T, Ogura S, Fujii Y, Umetani K, Shimosawa T, Yoshida KI, Pearson JT, Uemura K, Shirai M. β2-Adrenergic receptor-dependent attenuation of hypoxic pulmonary vasoconstriction prevents progression of pulmonary arterial hypertension in intermittent hypoxic rats. PLoS One 2014; 9:e110693. [PMID: 25350545 PMCID: PMC4211686 DOI: 10.1371/journal.pone.0110693] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/15/2014] [Indexed: 11/19/2022] Open
Abstract
In sleep apnea syndrome (SAS), intermittent hypoxia (IH) induces repeated episodes of hypoxic pulmonary vasoconstriction (HPV) during sleep, which presumably contribute to pulmonary arterial hypertension (PAH). However, the prevalence of PAH was low and severity is mostly mild in SAS patients, and mild or no right ventricular hypertrophy (RVH) was reported in IH-exposed animals. The question then arises as to why PAH is not a universal finding in SAS if repeated hypoxia of sufficient duration causes cycling HPV. In the present study, rats underwent IH at a rate of 3 min cycles of 4-21% O2 for 8 h/d for 6 w. Assessment of diameter changes in small pulmonary arteries in response to acute hypoxia and drugs were performed using synchrotron radiation microangiography on anesthetized rats. In IH-rats, neither PAH nor RVH was observed and HPV was strongly reversed. Nadolol (a hydrophilic β(1, 2)-blocker) augmented the attenuated HPV to almost the same level as that in N-rats, but atenolol (a hydrophilic β1-blocker) had no effect on the HPV in IH. These β-blockers had almost no effect on the HPV in N-rats. Chronic administration of nadolol during 6 weeks of IH exposure induced PAH and RVH in IH-rats, but did not in N-rats. Meanwhile, atenolol had no effect on morphometric and hemodynamic changes in N and IH-rats. Protein expression of the β1-adrenergic receptor (AR) was down-regulated while that of β2AR was preserved in pulmonary arteries of IH-rats. Phosphorylation of p85 (chief component of phosphoinositide 3-kinase (PI3K)), protein kinase B (Akt), and endothelial nitric oxide synthase (eNOS) were abrogated by chronic administration of nadolol in the lung tissue of IH-rats. We conclude that IH-derived activation of β2AR in the pulmonary arteries attenuates the HPV, thereby preventing progression of IH-induced PAH. This protective effect may depend on the β2AR-Gi mediated PI3K/Akt/eNOS signaling pathway.
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Affiliation(s)
- Hisashi Nagai
- Department of Forensic Medicine, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
- Department of Clinical Laboratory Medicine, The University of Tokyo, Tokyo, Japan
- * E-mail:
| | - Ichiro Kuwahira
- Department of Pulmonary Medicine, Tokai University Tokyo Hospital, Tokyo, Japan
| | - Daryl O. Schwenke
- Department of Physiology-Heart Otago, University of Otago, Dunedin, New Zealand
| | - Hirotsugu Tsuchimochi
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Akina Nara
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
| | - Tadakatsu Inagaki
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Sayoko Ogura
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
- Division of Laboratory Medicine, Department of Pathology and Microbiology, Faculty of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Yutaka Fujii
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Keiji Umetani
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan
| | - Tatsuo Shimosawa
- Department of Clinical Laboratory Medicine, The University of Tokyo, Tokyo, Japan
| | - Ken-ichi Yoshida
- Department of Forensic Medicine, The University of Tokyo, Tokyo, Japan
- Department of Forensic Medicine, Tokyo Medical University, Tokyo, Japan
| | - James T. Pearson
- Monash Biomedical Imaging Facility and Department of Physiology, Monash University, Melbourne, Clayton, Victoria, Australia
- Australian Synchrotron, Clayton, Victoria, Australia
| | - Koichi Uemura
- Department of Forensic Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mikiyasu Shirai
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
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Depression of HspA2 in human testis is associated with spermatogenic impairment and fertilization rate in ICSI treatment for azoospermic individuals. J Assist Reprod Genet 2014; 31:1687-93. [PMID: 25308252 DOI: 10.1007/s10815-014-0360-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/28/2014] [Indexed: 10/24/2022] Open
Abstract
PURPOSE Heat shock protein A2 (HspA2) expression was quantitatively measured in human testis and its relationship with the spermatogenetic status and laboratory outcomes of intracytoplasmic sperm injection (ICSI) was investigated. METHODS Testicular tissues of azoospermia men were divided into four groups according to histopahtology: normal spermatogenesiss, hypospermatogenesis, maturation arrest and Sertoli cell-only syndrome (SCOS). HspA2 immunostaining was measured by Image Pro-Plus (IPP) and laboratory outcomes were calculated. The regression analysis between HspA2 expression and Johnsen score of as well as fertilization, cleavage and high quality embryo rate was performed. RESULTS HspA2 was strongly present in the cytoplasm of spermatocytes and spermatides in normal testis. However, hypospermatogenesis and maturation arrest testicular tissues demonstrated light staining and no staining for SCOS. Quantitative image analysis showed that there were significant differences among groups (P = 0.000 & P = 0.001). HspA2 exspression was founded significantly correlated spermatogenetic status (R(2) = 0.726, P = 0.000) as well as fertilization rate in ICSI (R(2) = 0.569, P = 0.000). CONCLUSIONS The fertilization rate with ICSI is associated with HspA2 expression in the testis from which sperm retrieved and the alteration of HspA2 expression has been involved in spermatogenic impairment.
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66
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Szafran AT, Mancini MA. The myImageAnalysis project: a web-based application for high-content screening. Assay Drug Dev Technol 2014; 12:87-99. [PMID: 24547743 DOI: 10.1089/adt.2013.532] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A major challenge faced by screening centers developing image-based assays is the wide range of assays needed compared to the limited resources that are available to effectively analyze and manage them. To overcome this limitation, we have developed the web-based myImageAnalysis (mIA) application, integrated with an open database connectivity compliant database and powered by Pipeline Pilot (PLP) that incorporates dataset tracking, scheduling and archiving, image analysis, and data reporting. For system administrators, mIA provides automated methods for managing and archiving data. For the biologist, this application allows those without any programming or image analysis experience to quickly develop, validate, and share results of complex image-based assays. Further, the structure of the application within PLP allows those with experience in PLP programming to easily add additional analysis tools as required. The tools within mIA allow users to assess basic (cell count, protein per cell, protein subcellular localization) and more advanced (engineered cell lines analysis, cell toxicity) biological image-based assays that employ advanced statistics and provides key assay performance metrics.
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Affiliation(s)
- Adam T Szafran
- Department of Molecular and Cellular Biology, Baylor College of Medicine , Houston, Texas
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Zhang X, Liu W, Yang H, Tan L, Ao L, Liu J, Cao J, Cui Z. Inhibition of PPARα attenuates vimentin phosphorylation on Ser-83 and collapse of vimentin filaments during exposure of rat Sertoli cells in vitro to DBP. Reprod Toxicol 2014; 50:11-8. [PMID: 25291543 DOI: 10.1016/j.reprotox.2014.09.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 12/18/2022]
Abstract
Dibutyl phthalate (DBP) is a peroxisome proliferator which can lead to germ cell loss from Sertoli cells. Collapse of vimentin filaments occurs in Sertoli cells after DBP exposure. Peroxisome proliferator activated receptor α (PPARα) is a key receptor which could be activated by DBP. The role of PPARα in this process was investigated. Results showed that, PPARα was activated in DBP-exposed Sertoli cells, GW6471 inhibited the activity of PPARα, phosphorylation level of vimentin and concentration of soluble vimentin was higher in DBP-treated Sertoli cells than GW6471+DBP-treated cells. These results suggest that PPARα directly or indirectly mediated phosphorylation of vimentin on Ser 83, and PPARα may play an important role in regulating the reorganization of vimentin filaments during exposure of Sertoli cells to DBP.
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Affiliation(s)
- Xi Zhang
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Wenbin Liu
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Huan Yang
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Lu Tan
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Lin Ao
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Jinyi Liu
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Jia Cao
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
| | - Zhihong Cui
- Toxicology Institute, College of Preventive Medicine, Third Military Medical University, No. 30, Gaotanyan Road, Shapingba District, Chongqing 400038, China.
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Batista DIS, Perez L, Orfali RL, Zaniboni MC, Samorano LP, Pereira NV, Sotto MN, Ishizaki AS, Oliveira LMS, Sato MN, Aoki V. Profile of skin barrier proteins (filaggrin, claudins 1 and 4) and Th1/Th2/Th17 cytokines in adults with atopic dermatitis. J Eur Acad Dermatol Venereol 2014; 29:1091-5. [PMID: 25271795 DOI: 10.1111/jdv.12753] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 08/13/2014] [Indexed: 02/02/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) in adults and profile of skin barrier proteins and inflammatory cytokines. OBJECTIVE Evaluation of the expression of skin barrier proteins such as filaggrin, claudins 1 and 4 and of circulating inflammatory cytokines (Th1/Th2/Th17) in adults with AD. METHODS Thirty-three adult patients with AD diagnosed according to the Hanifin & Rajkacriteria, and 25 healthy controls were enrolled in the study. AD severity was measured by Eczema Area and Severity Index (EASI). Laboratory assays included immunohistochemistry analysis of skin barrier proteins, such as filaggrin, claudins 1 and 4 and interleukin-17 (IL-17) from skin samples and determination of circulating cytokine levels (IL-2, 4, 5, 6, 10, 17A, TNF and IFN-γ) by flow cytometry (Cytometric Bead Array). RESULTS We observed a reduced expression of filaggrin and claudin 1 in lesional skin of AD patients, when compared to controls. There was an inverse correlation of filaggrin expression and disease severity. In addition, IL-17 expression was enhanced in AD patients. Similarly, higher levels of inflammatory cytokines (IL-2, 5, 6, 10, 17A and IFN-γ) were found in AD patients. CONCLUSION Our data reinforce the role of an altered skin barrier in the pathogenesis of AD. Our results show not only reduced expression of filaggrin and claudin 1 in lesional atopic skin but also inverse correlation of filaggrin expression and disease severity. Moreover, elevation of in situ IL-17 and of circulating interleukin levels in AD emphasize the systemic, inflammatory profile of this defective skin barrier dermatosis.
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Affiliation(s)
- D I S Batista
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - L Perez
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - R L Orfali
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - M C Zaniboni
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - L P Samorano
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - N V Pereira
- Laboratory of Medical Investigation in Dermatology and Immunodeficiency, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - M N Sotto
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - A S Ishizaki
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - L M S Oliveira
- Laboratory of Medical Investigation in Dermatology and Immunodeficiency, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - M N Sato
- Laboratory of Medical Investigation in Dermatology and Immunodeficiency, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - V Aoki
- Department of Dermatology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
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Ašoklis R, Kadziauskienė A, Paulavičienė R, Petroška D, Laurinavičius A. Quantitative histopathological assessment of ocular surface squamous neoplasia using digital image analysis. Oncol Lett 2014; 8:1482-1486. [PMID: 25202353 PMCID: PMC4156187 DOI: 10.3892/ol.2014.2366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 06/05/2014] [Indexed: 11/16/2022] Open
Abstract
The aim of this retrospective pilot study was to evaluate the Aperio nuclear V9 algorithm as an image analysis tool to observe the histopathological changes of ocular surface squamous neoplasia (OSSN). A histopathological assessment, including the Ki-67 proliferative index (PI) of immunohistochemically-stained tumor conjunctiva (TC) and healthy conjunctiva (HC) tissues, was performed in six cases of OSSN. The Aperio V9 algorithm was applied to digital images of the tissue specimens to count the Ki-67 PI and to measure the nuclear area indices. This digital algorithm was validated using stereological and visual analysis methods. The visual scoring of Ki-67 PI ranged from 22 to 60% (mean, 38.5%), and from 5 to 20% (mean 9.5%) in TC and HC tissue, respectively. The computer-aided analysis, using the Aperio nuclear V9 algorithm, revealed that the Ki-67 PI ranged from 21.5 to 43.5% (mean, 33.6%), and from 1.9 to 21.0% (mean, 11.8%) in the TC and HC tissue, respectively. The stereological method demonstrated that the Ki-67 PI ranged from 30.1 to 51.5% (mean, 41.0%), and from 3.2 to 30.1% (mean, 15.1%) in the TC and HC tissues, respectively. The strongest association in the collinearity of regression analysis was observed between the Aperio nuclear V9 algorithm/stereological models in the TC tissue (r2=0.7; P=0.04) and the HC tissue (r2=0.7; P=0.03), and the visual/stereological models in the TC tissue (r2=0.7; P=0.04) and the visual/Aperio nuclear V9 algorithm models in the HC tissue (r2=0.7; P=0.04). A weak and statistically insignificant association was identified between the visual/Aperio nuclear V9 algorithm analysis in the TC tissue (r2=0.4; P=0.2) and the visual/stereological models in the HC tissue (r2=0.5; P=0.13). No significant difference was observed between the nuclear area of the TC (mean, 36.5 μm2) and HC (mean, 35.7 μm2; P=0.88) tissues. It was concluded that the Aperio nuclear V9 algorithm is a useful tool for the reliable analysis of histopathological changes of OSSN. The results of this computer-aided algorithm correlate strongly with the stereological method when assessing the Ki-67 PI.
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Affiliation(s)
- Rimvydas Ašoklis
- Faculty of Medicine, Vilnius University, Vilnius LT-03101, Lithuania ; Centre of Eye Diseases, Vilnius University Hospital Santariškių Klinikos, Vilnius LT-08661, Lithuania
| | - Aistė Kadziauskienė
- Faculty of Medicine, Vilnius University, Vilnius LT-03101, Lithuania ; Centre of Eye Diseases, Vilnius University Hospital Santariškių Klinikos, Vilnius LT-08661, Lithuania
| | - Rasa Paulavičienė
- Centre of Eye Diseases, Vilnius University Hospital Santariškių Klinikos, Vilnius LT-08661, Lithuania
| | - Donatas Petroška
- Faculty of Medicine, Vilnius University, Vilnius LT-03101, Lithuania ; National Center of Pathology, Vilnius University Hospital Santariškių Klinikos, Vilnius LT-08661, Lithuania
| | - Arvydas Laurinavičius
- Faculty of Medicine, Vilnius University, Vilnius LT-03101, Lithuania ; National Center of Pathology, Vilnius University Hospital Santariškių Klinikos, Vilnius LT-08661, Lithuania
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Quantitative method for in vitro matrigel invasiveness measurement through image analysis software. Mol Biol Rep 2014; 41:6335-41. [DOI: 10.1007/s11033-014-3556-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 06/20/2014] [Indexed: 10/25/2022]
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A comparative study of 2 computer-assisted methods of quantifying brightfield microscopy images. Appl Immunohistochem Mol Morphol 2014; 21:464-70. [PMID: 23343954 DOI: 10.1097/pai.0b013e31827ba0e1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Immunohistochemistry continues to be a powerful tool for the detection of antigens. There are several commercially available software packages that allow image analysis; however, these can be complex, require relatively high level of computer skills, and can be expensive. We compared 2 commonly available software packages, Adobe Photoshop CS6 and ImageJ, in their ability to quantify percentage positive area after picrosirius red (PSR) staining and 3,3'-diaminobenzidine (DAB) staining. On analysis of DAB-stained B cells in the mouse spleen, with a biotinylated primary rat anti-mouse-B220 antibody, there was no significant difference on converting images from brightfield microscopy to binary images to measure black and white pixels using ImageJ compared with measuring a range of brown pixels with Photoshop (Student t test, P=0.243, correlation r=0.985). When analyzing mouse kidney allografts stained with PSR, Photoshop achieved a greater interquartile range while maintaining a lower 10th percentile value compared with analysis with ImageJ. A lower 10% percentile reflects that Photoshop analysis is better at analyzing tissues with low levels of positive pixels; particularly relevant for control tissues or negative controls, whereas after ImageJ analysis the same images would result in spuriously high levels of positivity. Furthermore comparing the 2 methods by Bland-Altman plot revealed that these 2 methodologies did not agree when measuring images with a higher percentage of positive staining and correlation was poor (r=0.804). We conclude that for computer-assisted analysis of images of DAB-stained tissue there is no difference between using Photoshop or ImageJ. However, for analysis of color images where differentiation into a binary pattern is not easy, such as with PSR, Photoshop is superior at identifying higher levels of positivity while maintaining differentiation of low levels of positive staining.
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Miller M, Rosenthal P, Beppu A, Mueller JL, Hoffman HM, Tam AB, Doherty TA, McGeough MD, Pena CA, Suzukawa M, Niwa M, Broide DH. ORMDL3 transgenic mice have increased airway remodeling and airway responsiveness characteristic of asthma. THE JOURNAL OF IMMUNOLOGY 2014; 192:3475-87. [PMID: 24623133 DOI: 10.4049/jimmunol.1303047] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Orosomucoid-like (ORMDL)3 has been strongly linked with asthma in genetic association studies. Because allergen challenge induces lung ORMDL3 expression in wild-type mice, we have generated human ORMDL3 zona pellucida 3 Cre (hORMDL3(zp3-Cre)) mice that overexpress human ORMDL3 universally to investigate the role of ORMDL3 in regulating airway inflammation and remodeling. These hORMDL3(zp3-Cre) mice have significantly increased levels of airway remodeling, including increased airway smooth muscle, subepithelial fibrosis, and mucus. hORMDL3(zp3-Cre) mice had spontaneously increased airway responsiveness to methacholine compared to wild-type mice. This increased airway remodeling was associated with selective activation of the unfolded protein response pathway transcription factor ATF6 (but not Ire1 or PERK). The ATF6 target gene SERCA2b, implicated in airway remodeling in asthma, was strongly induced in the lungs of hORMDL3(zp3-Cre) mice. Additionally, increased levels of expression of genes associated with airway remodeling (TGF-β1, ADAM8) were detected in airway epithelium of these mice. Increased levels of airway remodeling preceded increased levels of airway inflammation in hORMDL3(zp3-Cre) mice. hORMDL3(zp3-Cre) mice had increased levels of IgE, with no change in levels of IgG, IgM, and IgA. These studies provide evidence that ORMDL3 plays an important role in vivo in airway remodeling potentially through ATF6 target genes such as SERCA2b and/or through ATF6-independent genes (TGF-β1, ADAM8).
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Affiliation(s)
- Marina Miller
- Department of Medicine, University of California, San Diego, La Jolla, CA 92093
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Quantitative modeling of clinical, cellular, and extracellular matrix variables suggest prognostic indicators in cancer: a model in neuroblastoma. Pediatr Res 2014; 75:302-14. [PMID: 24216542 DOI: 10.1038/pr.2013.217] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 06/09/2013] [Indexed: 11/08/2022]
Abstract
BACKGROUND Risk classification and treatment stratification for cancer patients is restricted by our incomplete picture of the complex and unknown interactions between the patient's organism and tumor tissues (transformed cells supported by tumor stroma). Moreover, all clinical factors and laboratory studies used to indicate treatment effectiveness and outcomes are by their nature a simplification of the biological system of cancer, and cannot yet incorporate all possible prognostic indicators. METHODS A multiparametric analysis on 184 tumor cylinders was performed. To highlight the benefit of integrating digitized medical imaging into this field, we present the results of computational studies carried out on quantitative measurements, taken from stromal and cancer cells and various extracellular matrix fibers interpenetrated by glycosaminoglycans, and eight current approaches to risk stratification systems in patients with primary and nonprimary neuroblastoma. RESULTS New tumor tissue indicators from both fields, the cellular and the extracellular elements, emerge as reliable prognostic markers for risk stratification and could be used as molecular targets of specific therapies. CONCLUSION The key to dealing with personalized therapy lies in the mathematical modeling. The use of bioinformatics in patient-tumor-microenvironment data management allows a predictive model in neuroblastoma.
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Mahdy HM, Mohamed MR, Emam MA, Karim AM, Abdel-Naim AB, Abdel-Naim A, Khalifa AE. The anti-apoptotic and anti-inflammatory properties of puerarin attenuate 3-nitropropionic-acid induced neurotoxicity in rats. Can J Physiol Pharmacol 2014; 92:252-8. [PMID: 24593790 DOI: 10.1139/cjpp-2013-0398] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Puerarin (Pur), an isoflavonoid extracted from the dried roots of Pueraria lobata, has been reported to be useful in the treatment of various diseases. This study was designed to evaluate the anti-apoptotic and anti-inflammatory activities of Pur against 3-nitropropionic acid (3-NP) induced neurotoxicity. For 5 consecutive days, male Wistar rats were given Pur (200 mg/kg body mass) 30 min before treatment with 20 mg/kg body mass of 3-NP. The striata, hippocampi, and cortices of the 3-NP treated group showed apoptotic damage, inflammation, and energy deficit as well as histopathological lesions. The 3-NP-induced alteration in apoptotic biomarkers (caspase-3 activity/level, cytosolic cytochrome c, Bax/Bcl-2 levels) were significantly ameliorated by Pur treatment. Moreover, Pur pretreatment blocked 3-NP-induced inflammatory biomarkers (NF-κB, TNF-α, and iNOS) and prevented the energy deficit (ATP reduction). Nissl staining further confirmed Pur's neuroprotective effect. These results indicate that Pur may be a useful preventive approach to various neurodegenerative diseases with underlying apoptosis and neuroinflammation.
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Affiliation(s)
- Heba M Mahdy
- a Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Monazamet Al-Wehdah Al-Efrikeya Street, Abbassia, Cairo, Egypt
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75
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Digital image analysis of inflammation markers in colorectal mucosa by using a spatial visualization method. Pathol Res Pract 2013; 210:147-54. [PMID: 24360569 DOI: 10.1016/j.prp.2013.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 10/29/2013] [Accepted: 11/14/2013] [Indexed: 01/06/2023]
Abstract
The aim of this study was to apply the spatial visualization method of digital images to quantitative analysis of pro-inflammatory cytokines IL-1, IL-6 and TNF-α in various segments of large bowel excised because of colitis ulcerosa in relation with selected clinical symptoms. Our preliminary study included 17 patients having undergone restorative proctocolectomy. Immunohistochemistry was performed for IL-1, IL-6 and TNF-α. The area fraction and intensity fraction of the cytokines studied were determined by digital image analysis. The results were then categorized using Alfred Immunohistochemistry Score. The expression of IL-1, IL-6 and TNF-α was significantly higher in the rectum than in colonic segments (p<0.01), and was associated with the patients' clinical condition. The method of quantitative immunohistochemistry presented here allows for searching associations between the expression of biomarkers and clinical symptoms. Evaluation of inflammatory cytokines could be recommended in the active stage of the disease with present symptoms of bloody and mucus stools. A higher expression of IL-1, IL-6 and TNF in samples beyond large intestine correlates with an intensified clinical course of the disease. In patients without bleeding and mucus symptoms present in stools, no significant correlations were found. Therefore, the assessment of cytokines during remission or clinically silent stage might not be useful.
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76
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Isse K, Lesniak A, Grama K, Maier J, Specht S, Castillo-Rama M, Lunz J, Roysam B, Michalopoulos G, Demetris AJ. Preexisting epithelial diversity in normal human livers: a tissue-tethered cytometric analysis in portal/periportal epithelial cells. Hepatology 2013; 57:1632-43. [PMID: 23150208 PMCID: PMC3612393 DOI: 10.1002/hep.26131] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 10/17/2012] [Accepted: 10/17/2012] [Indexed: 12/17/2022]
Abstract
UNLABELLED Routine light microscopy identifies two distinct epithelial cell populations in normal human livers: hepatocytes and biliary epithelial cells (BECs). Considerable epithelial diversity, however, arises during disease states when a variety of hepatocyte-BEC hybrid cells appear. This has been attributed to activation and differentiation of putative hepatic progenitor cells (HPC) residing in the canals of Hering and/or metaplasia of preexisting mature epithelial cells. A novel analytic approach consisting of multiplex labeling, high-resolution whole-slide imaging (WSI), and automated image analysis was used to determine if more complex epithelial cell phenotypes preexist in normal adult human livers, which might provide an alternative explanation for disease-induced epithelial diversity. "Virtually digested" WSI enabled quantitative cytometric analyses of individual cells displayed in a variety of formats (e.g., scatterplots) while still tethered to the WSI and tissue structure. We employed biomarkers specifically associated with mature epithelial forms (HNF4α for hepatocytes, CK19 and HNF1β for BEC) and explored for the presence of cells with hybrid biomarker phenotypes. The results showed abundant hybrid cells in portal bile duct BEC, canals of Hering, and immediate periportal hepatocytes. These bipotential cells likely serve as a reservoir for the epithelial diversity of ductular reactions, appearance of hepatocytes in bile ducts, and the rapid and fluid transition of BEC to hepatocytes, and vice versa. CONCLUSION Novel imaging and computational tools enable increased information extraction from tissue samples and quantify the considerable preexistent hybrid epithelial diversity in normal human liver. This computationally enabled tissue analysis approach offers much broader potential beyond the results presented here.
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Affiliation(s)
- Kumiko Isse
- Department of Pathology, University of Pittsburgh Medical Center,Department of Pathology, Division of Liver and Transplantation Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - Andrew Lesniak
- Department of Pathology, University of Pittsburgh Medical Center,Department of Pathology, Division of Liver and Transplantation Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - Kedar Grama
- Department of Electrical & Computer Engineering, University of Houston
| | - John Maier
- Department of Family Medicine, University of Pittsburgh Medical Center
| | - Susan Specht
- Department of Pathology, University of Pittsburgh Medical Center,Department of Pathology, Division of Liver and Transplantation Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - Marcela Castillo-Rama
- Department of Pathology, University of Pittsburgh Medical Center,Department of Pathology, Division of Liver and Transplantation Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - John Lunz
- Department of Pathology, University of Pittsburgh Medical Center,Department of Pathology, Division of Liver and Transplantation Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - Badrinath Roysam
- Department of Electrical & Computer Engineering, University of Houston
| | | | - Anthony J. Demetris
- Department of Pathology, University of Pittsburgh Medical Center,Department of Pathology, Division of Liver and Transplantation Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh
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Characterization of the TGF-β1 signaling abnormalities in the Gata1low mouse model of myelofibrosis. Blood 2013; 121:3345-63. [PMID: 23462118 DOI: 10.1182/blood-2012-06-439661] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Primary myelofibrosis (PMF) is characterized by fibrosis, ineffective hematopoiesis in marrow, and hematopoiesis in extramedullary sites and is associated with abnormal megakaryocyte (MK) development and increased transforming growth factor (TGF)-β1 release. To clarify the role of TGF-β1 in the pathogenesis of this disease, the TGF-β1 signaling pathway of marrow and spleen of the Gata1(low) mouse model of myelofibrosis (MF) was profiled and the consequences of inhibition of TGF-β1 signaling on disease manifestations determined. The expression of 20 genes in marrow and 36 genes in spleen of Gata1(low) mice was altered. David-pathway analyses identified alterations of TGF-β1, Hedgehog, and p53 signaling in marrow and spleen and of mammalian target of rapamycin (mTOR) in spleen only and predicted that these alterations would induce consequences consistent with the Gata1(low) phenotype (increased apoptosis and G1 arrest both in marrow and spleen and increased osteoblast differentiation and reduced ubiquitin-mediated proteolysis in marrow only). Inhibition of TGF-β1 signaling normalized the expression of p53-related genes, restoring hematopoiesis and MK development and reducing fibrosis, neovascularization, and osteogenesis in marrow. It also normalized p53/mTOR/Hedgehog-related genes in spleen, reducing extramedullary hematopoiesis. These data identify altered expression signatures of TGF-β1 signaling that may be responsible for MF in Gata1(low) mice and may represent additional targets for therapeutic intervention in PMF.
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78
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Zhang XF, Jiang WY, Yu PL, Li WJ, Zhang HJ. Significance of number of Th17 cells and expression of Th17-related cytokines in patients with active ulcerative colitis. Shijie Huaren Xiaohua Zazhi 2013; 21:19-26. [DOI: 10.11569/wcjd.v21.i1.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the association of number of Th17 cells and expression of Th17-related cytokines (IL-17 and IL-21) with disease activity, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), endoscopic stage, and histological grade in patients with active ulcerative colitis (UC).
METHODS: Forty patients with active UC and 20 healthy controls were recruited. The infiltration of Th17 cells in colonic mucosa was assessed by immunofluorescence. The expression of IL-17 and IL-21 was detected by immunohistochemistry. Serum levels of IL-17 and L-21 were determined by ELISA.
RESULTS: Compared to healthy controls, the number of Th17 cells increased mainly in the lamina propria of active UC patients. The expression of IL-17 and IL-21 in the colonic mucosa and serum levels of these two cytokines in active UC patients were significantly higher than those in normal controls (0.0087 ± 0.0019 vs 0.0008 ± 0.0001, P < 0.05; 0.0082 ± 0.0017 vs 0.0005 ± 0.0001, P < 0.01). The expression of IL-17 and IL-21 was higher in severe UC than in moderate or mild UC (0.0020 ± 0.0004 vs 0.0079 ± 0.0016 vs 0.0173 ± 0.0011; 0.0020 ± 0.0004 vs 0.0097 ± 0.0002 vs 0.0120 ± 0.0006). IL-17 and IL-21 expression was positively correlated with CRP, endoscopic stage, and histological grade in patients with active UC (all P < 0.05). The expression of IL-17 was also positively correlated with ESR (P < 0.05).
CONCLUSION: The number of Th17 cells and expression of Th17-related cytokines (IL-17 and IL-21) increase in the colonic mucosa of patients with active UC. Th17 cells and Th17-related cytokines may play an important role in disease activity and mucosal damage in patients with active UC.
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79
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Chieco P, Jonker A, De Boer BA, Ruijter JM, Van Noorden CJ. Image Cytometry: Protocols for 2D and 3D Quantification in Microscopic Images. ACTA ACUST UNITED AC 2013; 47:211-333. [DOI: 10.1016/j.proghi.2012.09.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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80
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Bhamidipati CM, Mehta GS, Lu G, Moehle CW, Barbery C, DiMusto PD, Laser A, Kron IL, Upchurch GR, Ailawadi G. Development of a novel murine model of aortic aneurysms using peri-adventitial elastase. Surgery 2012; 152:238-46. [PMID: 22828146 DOI: 10.1016/j.surg.2012.02.010] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Accepted: 02/10/2012] [Indexed: 01/08/2023]
Abstract
BACKGROUND Our aim was to establish a novel model of abdominal aortic aneurysms (AAA) in mice using application of peri-adventitial elastase. METHODS C57BL/6J male mice underwent infrarenal peri-adventitial application of either (1) sodium chloride (control; n = 7), (2) porcine pancreatic elastase (PPE; n = 14), or (3) PPE and doxycycline (PPE + doxycycline 200 mg/kg; n = 11) for 14 days. Aortas were analyzed by video micrometry, immunohistochemistry, qualitative polymerase chain reaction, and zymography. Groups underwent Mann-Whitney U comparisons. RESULTS At day 14 compared with baseline, control animals had minimal aortic dilation, whereas fusiform aneurysms were seen in PPE (control, 20 ± 3%; PPE, 82 ± 15%; P ≤ .003). Doxycycline abrogated aneurysm formation (PPE, 82 ± 15%; PPE + doxycycline, 37 ± 10%; P ≤ .03). Compared with control and PPE + doxycycline, immunohistochemistry demonstrated greater elastin fiber degradation, macrophage infiltration, and matrix metalloproteinase-9 expression in PPE. Ki-67 and cleaved caspase-3 were lower in control versus PPE. The loss of smooth muscle marker expression seen with PPE was preserved in PPE + doxycycline. Zymography confirmed that both MMP-2 and -9 were more active in PPE than PPE + doxycycline. CONCLUSION Peri-adventitial application of elastase is a simple, reproducible in vivo model of aneurysm formation leading to consistent infrarenal aortic aneurysm development by day 14, with inflammatory cell infiltration and MMP upregulation. Doxycycline inhibits AAA progression in this model via limiting matrix degradation and preserving differentiated smooth muscle cells.
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Affiliation(s)
- Castigliano M Bhamidipati
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA
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81
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Schurman SH, Dunn CA, Greaves R, Yu B, Ferrucci L, Croteau DL, Seidman MM, Bohr VA. Age-related disease association of endogenous γ-H2AX foci in mononuclear cells derived from leukapheresis. PLoS One 2012; 7:e45728. [PMID: 23029205 PMCID: PMC3448703 DOI: 10.1371/journal.pone.0045728] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 08/20/2012] [Indexed: 11/30/2022] Open
Abstract
The phosphorylated form of histone H2AX (γ-H2AX) forms immunohistochemically detectable foci at DNA double strand breaks. In peripheral blood mononuclear cells (PBMCs) derived from leukapheresis from patients enrolled in the Baltimore Longitudinal Study of Aging, γ-H2AX foci increased in a linear fashion with regards to age, peaking at ∼57 years. The relationship between the frequency of γ-H2AX foci and age-related pathologies was assessed. We found a statistically significant (p = 0.023) 50% increase in foci in PBMCs derived from patients with a known history of vitamin D deficiency. In addition, there were trends toward increased γ-H2AX foci in patients with cataracts (34% increase, p<0.10) and in sleep apnea patients (44%, p<0.10). Among patients ≥57 y/o, we found a significant (p = 0.037) 36% increase in the number of γ-H2AX foci/cell for patients with hypertension compared to non-hypertensive patients. Our results support a role for increased DNA damage in the morbidity of age-related diseases. γ -H2AX may be a biomarker for human morbidity in age-related diseases.
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Affiliation(s)
- Shepherd H. Schurman
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Christopher A. Dunn
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Rebecca Greaves
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Binbing Yu
- Laboratory of Epidemiology, Demography and Biometry, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Luigi Ferrucci
- Clinical Research Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Deborah L. Croteau
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Michael M. Seidman
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
| | - Vilhelm A. Bohr
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
- * E-mail:
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82
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Kamoi M, Ogawa Y, Nakamura S, Dogru M, Nagai T, Obata H, Ito M, Kaido M, Kawakita T, Okada Y, Kawakami Y, Shimmura S, Tsubota K. Accumulation of secretory vesicles in the lacrimal gland epithelia is related to non-Sjögren's type dry eye in visual display terminal users. PLoS One 2012; 7:e43688. [PMID: 22962587 PMCID: PMC3433460 DOI: 10.1371/journal.pone.0043688] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 07/24/2012] [Indexed: 12/03/2022] Open
Abstract
Previous observations in a rat model of a non-Sjögren's syndrome (non-SS) type of dry eye seen in users of visual display terminals (VDT) indicated that secretory vesicle (SV) accumulation in the lacrimal gland epithelia contributes to the condition. Here, to examine this possibility in humans, we compared the lacrimal gland histology and percent SV area in the cytoplasm of acinar epithelial cells using light microscopy and transmission electron microscopy, in patients with VDT work-related non-SS dry-eye (VDT group), SS-induced dry-eye, and autopsied normal controls. In addition, the VAMP8 (vesicle-associated membrane protein 8, an exocrine-pathway molecule) and Rab3D (mature vesicle marker) were histochemically examined in lacrimal gland tissue sections. The lacrimal gland acini were larger in the VDT group than in the SS group, and the percent SV area was significantly higher in the VDT group than in the normal controls (P = 0.021) or SS group (P = 0.004). Immunostaining revealed abnormal distributions of VAMP8 in the VDT and SS groups. Rab3D was more strongly expressed in the cytoplasm of acinar epithelial cells in the VDT group than in that of normal controls. The duration of VDT use was significantly longer in the VDT group than in the other groups. These findings suggest that excessive SV accumulation in the acinar epithelia may contribute to the reduced tear secretion in VDT users.
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Affiliation(s)
- Mizuka Kamoi
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Yoko Ogawa
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
- * E-mail:
| | - Shigeru Nakamura
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Murat Dogru
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Toshihiro Nagai
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Hiroto Obata
- Department of Ophthalmology, Jichi Medical University, Tochigi, Japan
| | - Masataka Ito
- Department of Developmental Anatomy and Regenerative Biology, National Defense Medical College, Saitama, Japan
| | - Minako Kaido
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Tetsuya Kawakita
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Yasunori Okada
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Yutaka Kawakami
- Division of Cellular Signaling, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - Shigeto Shimmura
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
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83
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Greenspan EJ, Lee H, Dyba M, Pan J, Mekambi K, Johnson T, Blancato J, Mueller S, Berry DL, Chung FL. High-throughput, quantitative analysis of acrolein-derived DNA adducts in human oral cells by immunohistochemistry. J Histochem Cytochem 2012; 60:844-53. [PMID: 22899861 DOI: 10.1369/0022155412459759] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Acrolein (Acr) is a ubiquitous environmental pollutant as well as an endogenous compound. Acrolein-derived 1,N(2)-propanodeoxyguanosines (Acr-dG) are exocyclic DNA adducts formed following exposure to cigarette smoke or from lipid peroxidation. Acr-dG is mutagenic and potentially carcinogenic and may represent a useful biomarker for the early detection of cancers related to smoking or other oxidative conditions, such as chronic inflammation. In this study, we have developed a high-throughput, automated method using a HistoRx PM-2000 imaging system combined with MetaMorph software for quantifying Acr-dG adducts in human oral cells by immunohistochemical detection using a monoclonal antibody recently developed by our laboratory. This method was validated in a cell culture system using BEAS-2B human bronchial epithelial cells treated with known concentrations of Acr. The results were further verified by quantitative analysis of Acr-dG in DNA of BEAS-2B cells using a liquid chromatography/tandem mass spectrometry/multiple-reaction monitoring method. The automated method is a quicker, more accurate method than manual evaluation of counting cells expressing Acr-dG and quantifying fluorescence intensity. It may be applied to other antibodies that are used for immunohistochemical detection in tissues as well as cell lines, primary cultures, and other cell types.
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Affiliation(s)
- Emily J Greenspan
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
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Isse K, Lesniak A, Grama K, Roysam B, Minervini MI, Demetris AJ. Digital transplantation pathology: combining whole slide imaging, multiplex staining and automated image analysis. Am J Transplant 2012; 12:27-37. [PMID: 22053785 PMCID: PMC3627485 DOI: 10.1111/j.1600-6143.2011.03797.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Conventional histopathology is the gold standard for allograft monitoring, but its value proposition is increasingly questioned. "-Omics" analysis of tissues, peripheral blood and fluids and targeted serologic studies provide mechanistic insights into allograft injury not currently provided by conventional histology. Microscopic biopsy analysis, however, provides valuable and unique information: (a) spatial-temporal relationships; (b) rare events/cells; (c) complex structural context; and (d) integration into a "systems" model. Nevertheless, except for immunostaining, no transformative advancements have "modernized" routine microscopy in over 100 years. Pathologists now team with hardware and software engineers to exploit remarkable developments in digital imaging, nanoparticle multiplex staining, and computational image analysis software to bridge the traditional histology-global "-omic" analyses gap. Included are side-by-side comparisons, objective biopsy finding quantification, multiplexing, automated image analysis, and electronic data and resource sharing. Current utilization for teaching, quality assurance, conferencing, consultations, research and clinical trials is evolving toward implementation for low-volume, high-complexity clinical services like transplantation pathology. Cost, complexities of implementation, fluid/evolving standards, and unsettled medical/legal and regulatory issues remain as challenges. Regardless, challenges will be overcome and these technologies will enable transplant pathologists to increase information extraction from tissue specimens and contribute to cross-platform biomarker discovery for improved outcomes.
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Affiliation(s)
- Kumiko Isse
- Department of Pathology, Division of Transplantation, University of Pittsburgh Medical Center,Department of Pathology, Tomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - Andrew Lesniak
- Department of Pathology, Division of Transplantation, University of Pittsburgh Medical Center,Department of Pathology, Tomas E. Starzl Transplantation Institute, University of Pittsburgh
| | - Kedar Grama
- Department of Electrical & Computer Engineering, University of Houston
| | - Badrinath Roysam
- Department of Electrical & Computer Engineering, University of Houston
| | - Martha I. Minervini
- Department of Pathology, Division of Transplantation, University of Pittsburgh Medical Center
| | - Anthony J Demetris
- Department of Pathology, Division of Transplantation, University of Pittsburgh Medical Center,Department of Pathology, Tomas E. Starzl Transplantation Institute, University of Pittsburgh
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