1
|
Kirtsreesakul V, Atchariyasathian V. Nasal Polyposis: Role of Allergy on Therapeutic Response of Eosinophil- and Noneosinophil-Dominated Inflammation. ACTA ACUST UNITED AC 2018. [DOI: 10.1177/194589240602000118] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background It is considered that allergy, at least in some cases, is associated with nasal polyps and affects recurrence rate. Our purpose was to determine the effects of aeroallergen hypersensitization on therapeutic response of eosinophil- and noneosinophil-dominated inflammation. Methods Sixty-eight patients were enrolled. Histopathological investigation and a skin-prick test were done and categorized as eosinophil-dominated inflammation with positive (ESPT+) or negative skin test (ESPT-) and nonesoinophil-dominated inflammation with positive (NESPT+) or negative skin test (NESPT-). Patients were treated over 6 weeks with budesonide nasal spray, 400 μg/day. At 0, 3, and 6 weeks after treatment, nasal symptoms, polyp size, nasal and oral peak expiratory flow (PEF) index and overall assessment within and between groups were evaluated and compared. Results At 3 and 6 weeks after treatment, the ESPT- group showed the most, and the NESPT+ group showed the least therapeutic improvement. In comparing between the positive and negative skin tests in each histopathology, the positive skin tests tended to have less improvement than the negative skin tests in all variables. The differences increased over time and reached statistical significance at 6 weeks in the PEF index and overall assessment of eosinophil-dominated inflammation (p = 0.004 and 0.033, respectively) and in sneezing score, postnasal drip score, and overall assessment of noneosinophil-dominated inflammation (p = 0.019, 0.035, and 0.013, respectively). Conclusion Nonallergic eosinophilic polyps had the best and allergic noneosinophilic polyps had the worst therapeutic response. Within each histopathology, allergic nasal polyps had less therapeutic response than nonallergic nasal polyps. This augmented effect could be caused by concomitant allergic inflammation.
Collapse
Affiliation(s)
- Virat Kirtsreesakul
- Department of Otolaryngology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Viraporn Atchariyasathian
- Department of Otolaryngology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| |
Collapse
|
2
|
Changes in Histological Features of Nasal Polyps in a Korean Population over a 17-year Period. Otolaryngol Head Neck Surg 2013; 149:431-7. [DOI: 10.1177/0194599813495363] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Objective Nasal polyps can be categorized as eosinophilic or non-eosinophilic, depending on inflammatory cell infiltration. There are geographical differences in the prevalence of types of pathologic polyps. The aim of this study was to evaluate the change in the prevalence of histological subtypes of polyps over time in a Korean population. Study Design A retrospective cross-sectional study with histologic analysis. Setting A single academic medical center. Subjects and Methods A total of 230 patients with nasal polyps were enrolled between 1993-1994 (group A) and 2010-2011 (group B). Specimens were fixed in formalin and embedded into paraffin blocks. Slides were stained with hematoxylin-eosin (H&E) and were subsequently reviewed by 2 of the authors. The numbers of eosinophils per high power field (HPF), as well as other cellular, epithelial, and stromal markers, were recorded. Results We compared nasal polyp eosinophil counts according to time period. The average eosinophil count/HPF increased from 6.8 in group A to 19.3 in group B ( P = .006). The prevalence of eosinophilic polyps also increased from 24.0% in group A to 50.9% in group B ( P < .001). Among other histologic markers, lymphocytes, basement membrane thickening, and gland hyperplasia showed significant differences between groups. Conclusion After comparison of histopathologic findings of nasal polyps from 1993 and 2011 at 1 academic medical center in Korea, the prevalence of eosinophilic nasal polyps, which are known to be rare among Asians, has significantly increased.
Collapse
|
3
|
Meticulous endoscopic sinus surgery to prevent recurrence of massive nasal polyposis. The Journal of Laryngology & Otology 2013; 126:789-94. [PMID: 22804852 DOI: 10.1017/s0022215112001193] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the effect of meticulous endoscopic surgery, including opening of all involved sinus cells, on the subsequent symptoms and endoscopic findings of patients with massive nasal polyposis. STUDY DESIGN AND METHOD One hundred patients with massive nasal polyposis resistant to medical treatment were selected. We documented each patient's demographic data, associated diseases, endoscopic findings, Lund-Mackay score and Sino-Nasal Outcome Test 22 (SNOT22) symptom score. All patients were followed up for at least two years to evaluate any recurrence. RESULTS Of the 100 patients, 20 per cent had a history of asthma and 27 per cent had undergone previous surgery. All underwent endoscopic sinus surgery. After two years of follow up, 8 per cent had recurrence requiring surgery. Recurrence was significantly associated with a history of asthma (p < 0.001) and the histopathological presence of eosinophilia (p = 0.014). CONCLUSION Meticulous endoscopic opening of all involved sinus cells can be a safe and effective means of controlling massive nasal polyposis, with an acceptable recurrence rate.
Collapse
|
4
|
Jeong WJ, Lee CH, Cho SH, Rhee CS. Eosinophilic allergic polyp: a clinically oriented concept of nasal polyp. Otolaryngol Head Neck Surg 2010; 144:241-6. [PMID: 21493424 DOI: 10.1177/0194599810391738] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Tissue eosinophilia is a hallmark of nasal polyposis. However, there is no universally accepted definition for eosinophilic nasal polyp. The aims of this study were to histologically analyze the inflammatory cell population in the nasal polyp and propose the concept of eosinophilic allergic polyp (EAP), a simple and objective concept that would be clinically and practically valuable. STUDY DESIGN A cohort study with histological analysis of tissue sections and chart review. SETTING A tertiary university hospital. SUBJECTS AND METHODS Nasal polyp tissues were harvested during routine endoscopic sinus surgery from a cohort of 118 patients. Total number of inflammatory cells, including eosinophils, was counted. The presence of allergy and asthma was assessed, which was then correlated with the histologic findings. To determine a criterion for EAP, a receiver operating characteristic curve was used to identify the best cutoff point, which was further validated by comparing the eosinophil proportion in each group with reference to the clinical parameters. RESULTS Eosinophil accounted for an average of 18.7% of all inflammatory cells. The proportion of nasal polyps with at least 1 or more eosinophil infiltration accounted for 90.7% of all nasal polyps. When the concept of EAP was applied, a tissue eosinophil count of 11% was found to be significant and clinically most useful. Using this criterion, the proportion of EAP among nasal polyps was 62.7%. CONCLUSION The authors suggest a tissue eosinophil proportion of more than 11% as a criterion for EAP, a clinically useful concept of nasal polyp that bears good correlation with asthma and allergy.
Collapse
Affiliation(s)
- Woo-Jin Jeong
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Korea
| | | | | | | |
Collapse
|
5
|
Gerstner AOH. Early detection in head and neck cancer - current state and future perspectives. GMS CURRENT TOPICS IN OTORHINOLARYNGOLOGY, HEAD AND NECK SURGERY 2010; 7:Doc06. [PMID: 22073093 PMCID: PMC3199835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Survival and quality of life in head and neck cancer are directly linked to the size of the primary tumor at first detection. In order to achieve substantial gain at these issues, both, primary prevention and secondary prevention, which is early detection of malignant lesions at a small size, have to be improved. So far, there is not only a lack in the necessary infrastructure not only in Germany, but rather worldwide, but additionally the techniques developed so far for early detection have a significance and specificity too low as to warrant safe implementation for screening programs. However, the advancements recently achieved in endoscopy and in quantitative analysis of hypocellular specimens open new perspectives for secondary prevention. Chromoendoscopy and narrow band imaging (NBI) pinpoint suspicious lesions more easily, confocal endomicroscopy and optical coherence tomography obtain optical sections through those lesions, and hyperspectral imaging classifies lesions according to characteristic spectral signatures. These techniques therefore obtain optical biopsies. Once a "bloody" biopsy has been taken, the plethora of parameters that can be quantified objectively has been increased and could be the basis for an objective and quantitative classification of epithelial lesions (multiparametric cytometry, quantitative histology). Finally, cytomics and proteomics approaches, and lab-on-the-chip technology might help to identify patients at high-risk. Sensitivity and specificity of these approaches have to be validated, yet, and some techniques have to be adapted for the specific conditions for early detection of head and neck cancer. On this background it has to be stated that it is still a long way to go until a population based screening for head and neck cancer is available. The recent results of screening for cancer of the prostate and breast highlight the difficulties implemented in such a task.
Collapse
|
6
|
Abstract
One hundred and fifty years after Virchow introduced his fundamental concept of cellular pathology, we now have tools that allow us to unravel the mechanisms of single living cells on a previously unprecedented level of detail. By exploring the molecular cellular phenotype, multiparametric cytometry not only detects specific cellular functions in general but also offers insights into the interaction of single subunits of proteins (e.g., growth factor receptors). Several quantitative and objective techniques allow analysis of single-cell preparations as well as tissue sections to obtain data on different cellular parameters. This opens the way to quantitative and objective histology, which in the future may be possible even without blood or the need to make an incision. To use this huge amount of data for treatment decisions in an individual patient, novel bioinformatic concepts are needed in order to predict the individual course of a disease. The concept of cytomics centers on the cell as the integral unit of all life and explores diseases starting from the cell and going to subcellular units (top-down analysis).
Collapse
|
7
|
Laffers W, Schlenkhoff C, Pieper K, Mittag A, Tárnok A, Gerstner AO. Concepts for Absolute Immunophenosubtyping by Slide- Based Cytometry. Transfus Med Hemother 2007. [DOI: 10.1159/000101430] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
8
|
Tárnok A, Bocsi J, Brockhoff G. Cytomics - importance of multimodal analysis of cell function and proliferation in oncology. Cell Prolif 2007; 39:495-505. [PMID: 17109634 PMCID: PMC6496464 DOI: 10.1111/j.1365-2184.2006.00407.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Cancer is a highly complex and heterogeneous disease involving a succession of genetic changes (frequently caused or accompanied by exogenous trauma), and resulting in a molecular phenotype that in turn results in a malignant specification. The development of malignancy has been described as a multistep process involving self-sufficiency in growth signals, insensitivity to antigrowth signals, evasion of apoptosis, limitless replicative potential, sustained angiogenesis, and finally tissue invasion and metastasis. The quantitative analysis of networking molecules within the cells might be applied to understand native-state tissue signalling biology, complex drug actions and dysfunctional signalling in transformed cells, that is, in cancer cells. High-content and high-throughput single-cell analysis can lead to systems biology and cytomics. The application of cytomics in cancer research and diagnostics is very broad, ranging from the better understanding of the tumour cell biology to the identification of residual tumour cells after treatment, to drug discovery. The ultimate goal is to pinpoint in detail these processes on the molecular, cellular and tissue level. A comprehensive knowledge of these will require tissue analysis, which is multiplex and functional; thus, vast amounts of data are being collected from current genomic and proteomic platforms for integration and interpretation as well as for new varieties of updated cytomics technology. This overview will briefly highlight the most important aspects of this continuously developing field.
Collapse
Affiliation(s)
- A Tárnok
- Department of Paediatric Cardiology, Cardiac Centre Leipzig GmbH, University of Leipzig, Leipzig, Germany.
| | | | | |
Collapse
|
9
|
Wijsman JA, Obert LA, Paulissen J, Garrido R, Toy KA, Dunstan RW. A practical method to determine the amount of tissue to analyze using laser scanning cytometry. Cytometry A 2007; 71:501-8. [PMID: 17366639 DOI: 10.1002/cyto.a.20397] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Laser scanning cytometry (LSC) is a new technology similar to flow cytometry but generates data from analysis of successive microscopic fields. Unlike its use in other applications, LSC-generated data are not random when used for tissue sections, but are dependent on the microanatomy of the tissue and the distribution and expression of the protein under investigation. For valid LSC analysis, the data generated requires the evaluation of a sufficient tissue area to ensure an accurate representation of expression within the tissue of interest. METHODS In this report, we describe a simple and common sense method for determining the area of tissue required for sound LSC analysis by tracking the variation in the measure of target expression with increasing number of fields until it approaches zero. RESULTS This approach was used to evaluate the expression of immunohistochemical markers with differing tissue distributions in liver (PMP70, CYP1A2, and Ki67 positive macrophages) and a colorectal adenocarcinoma (activated caspase-3 positive cells), which exhibited diffuse, regional (centrilobular), random, and irregular distribution patterns respectively. CONCLUSIONS Analyses of these markers demonstrated that the amount of tissue area required to reach a steady measure of a parameter increased with increasing variability of the tissue distribution.
Collapse
Affiliation(s)
- John A Wijsman
- Investigative Pathology Laboratory, Pfizer Global Research and Development, Ann Arbor, Michigan 48105, USA.
| | | | | | | | | | | |
Collapse
|
10
|
Abstract
In the postgenomic era, to gain the most detailed quantitative data from biological specimens has become increasingly important in the emerging new fields of high-content and high-throughput single-cell analysis for systems biology and cytomics. Areas of research and diagnosis with the demand to virtually measure "anything" in the cell include immunophenotyping, rare cell detection and characterization in the case of stem cells and residual tumor cells, tissue analysis, and drug discovery. Systemic analysis is also a prerequisite for predictive medicine by genomics, proteomics, and cytomics. This issue of Cytometry Part A is dedicated to innovative concepts of system wide single cells analysis and manipulation, new technologies, data analysis and display, and, finally, quality assessment. The manuscripts to these chapters are provided by cutting edge experts in the fields. This overview will briefly highlight the most important aspects of this continuously developing field.
Collapse
Affiliation(s)
- Attila Tárnok
- Department of Pediatric Cardiology, Cardiac Center Leipzig GmbH, University of Leipzig, Germany.
| |
Collapse
|
11
|
Shahana S, Jaunmuktane Z, Asplund MS, Roomans GM. Ultrastructural investigation of epithelial damage in asthmatic and non-asthmatic nasal polyps. Respir Med 2006; 100:2018-28. [PMID: 16580832 DOI: 10.1016/j.rmed.2006.02.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2005] [Revised: 01/29/2006] [Accepted: 02/12/2006] [Indexed: 11/22/2022]
Abstract
Nasal polyposis is a poorly understood chronic inflammatory disease often associated with asthma. As nasal polyps and asthma both are associated with massive eosinophil infiltration, they may share a common pathophysiological mechanism. Many genetic and autoimmune diseases may result from altered expression or function of cell adhesion molecules such as desmosomes. A transmission electron microscopical study was carried out on tissue from 15 patients suffering from nasal polyps, to investigate if there are changes in desmosomes in nasal polyps from asthmatic and/or allergic patients versus non-asthmatic versus non-allergic patients. In allergic patients the damage to columnar cells was more extensive than in non-allergic patients. Massive infiltration of eosinophils was observed in epithelium and connective tissue in all groups. No significant difference in thickness of the basal lamina was found between any of the groups. All patients had dilated capillaries in the connective tissue. The intercellular space between the epithelial cells was smallest in the asthmatic non-allergic group. The relative length of columnar cell or basal cell desmosomes was reduced in patients with asthma or allergy, compared to non-allergic, non-asthmatic patients. Hence, there appears to be a weakness in the desmosomes in asthmatics and allergics. Epithelial shedding may play an important role in the pathophysiological process of a multifactorial disease such as asthma.
Collapse
Affiliation(s)
- S Shahana
- Department of Medical Cell Biology, University of Uppsala, Box 571, 75123 Uppsala, Sweden
| | | | | | | |
Collapse
|
12
|
Gerstner AOH, Thiele A, Tárnok A, Tannapfel A, Weber A, Bootz F. Prediction of upper aerodigestive tract cancer by slide-based cytometry. Cytometry A 2006; 69:582-7. [PMID: 16807892 DOI: 10.1002/cyto.a.20316] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIM To evaluate slide-based cytometry in screening for and following up of carcinoma of the upper aerodigestive tract using swabs for a minimal-invasive approach. METHODS Laser scanning cytometry (LSC) was used for multiparametric analysis of cells stained for cytokeratin and DNA to determine the DNA-index (DI) of the tumor cells. Histograms with 0.95 < DI < 1.05 and 1.9 < DI < 2.1 were defined as DNA euploid and any other DI as DNA aneuploid. After subsequent HE-staining, single cells were relocalized in order to document morphology. Conventional cytology was also performed on a subset of the slides. Routine histopathology of parallel biopsies served as gold standard in all cases. RESULTS 115 swabs from 109 patients were obtained from the entire upper aerodigestive tract. 16 swabs were classified as insufficient for LSC. In the remaining 99 specimens, 1 benign lesion was misclassified as malignant, while 61 of the 75 malignant lesions were correctly identified. This corresponds to predictive values of 98.4% and 62.2% for the detection of malignant and benign samples by LSC. CONCLUSION This pilot study demonstrates the validity of LSC screening for the identification of tumor malignancy in the upper aerodigestive tract from swab collected cytological material.
Collapse
|
13
|
Gerstner AOH, Tárnok A, Bootz F. [Slide-based multi-parametric cytometry in ENT. Perspectives for the clinic and research]. HNO 2005; 53:134-41. [PMID: 15029426 DOI: 10.1007/s00106-004-1076-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Flow cytometry is the standard method for the multi-parametric analysis of cells. However, for about a decade, an instrument has been available which analyses fluorescing cells immobilised on slides called a laser scanning cytometer (LSC). Its design, according to the principles of slide-based cytometry, promises many advantages, especially in the analysis of minimal sample volumes. METHODS AND PATIENTS To date, applications for cultured cells and animal models have been established. Its use for clinical purposes, however, remains to be critically evaluated. We analysed a variety of specimens obtained in our clinical routine. RESULTS First, the instrument's resolution was evaluated using standardised particles. This showed a very good sensitivity across a wide range of fluorescence intensities at various wavelengths. Next, diverse applications for tissue engineering, immunophenotyping, and ENT-oncology were tested. Considering its microanalytical capacities, LSC proved to be a convincing tool for clinical use. Additionally, complex structures such as bi-layers of cultured cells were analysed. CONCLUSION A broad spectrum of applications in clinical practice and research for the LSC is evident.
Collapse
Affiliation(s)
- A O H Gerstner
- Klinik und Poliklinik für HNO-Heilkunde/Chirurgie der Universität Bonn.
| | | | | |
Collapse
|
14
|
Riechelmann H, Deutschle T, Rozsasi A, Keck T, Polzehl D, Bürner H. Nasal biomarker profiles in acute and chronic rhinosinusitis. Clin Exp Allergy 2005; 35:1186-91. [PMID: 16164446 DOI: 10.1111/j.1365-2222.2005.02316.x] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Clinical manifestations of rhinosinusitis include acute rhinosinusitis, chronic rhinosinusitis (CRS) with nasal polyps and CRS without polyps. OBJECTIVE Possible mechanisms defining these three forms of rhinosinusitis should be investigated assessing biomarker profiles in nasal secretions. METHODS Fifteen cytokines, three cellular activation markers and total IgE were determined in nasal secretions of seven patients with acute rhinosinusitis, 12 patients with CRS without polyps, 13 patients with CRS with polyps and six healthy controls. Principal component analysis was used to extract relevant factors. RESULTS Irrespective of the clinical manifestation, all biomarkers assessed were increased in patients with rhinosinusitis when compared with controls (P<0.001). Principal component analysis allowed the extraction of three factors explaining 83% of data variance. The general inflammatory activation was mainly reflected by the first factor. The second factor differentiated acute from CRS. This factor correlated with IL-12, which is involved in pathogen-related immune activation by antigen-presenting cells. It was also positively correlated with IL-4, IL-10 and IL-13, which play an important role in the resolution of infections. The third factor differentiated CRS with polyps from CRS without polyps (P=0.001). It represented IL-5 and nasal IgE (nIgE), whereas eosinophil cationic protein and tryptase were not specific for CRS with polyps. CONCLUSION In mucosal infection, numerous inflammatory mediators are activated. Simple correlations of few biomarkers with a specific disease process bear the risk of overestimating a possibly unspecific effect. To assess biomarker profiles, more complex analytic tools may be more appropriate to delineate mechanisms underlying mucosal disease. Using principal component analysis, it was found that high nIgE and IL-5 levels are specific for CRS with nasal polyps.
Collapse
Affiliation(s)
- H Riechelmann
- Department of Otorhinolaryngology-Head and Neck Surgery, University Hospital of Ulm, Prittwitzstrasse 43, 89075 Ulm, Germany.
| | | | | | | | | | | |
Collapse
|
15
|
Gerstner AOH, Thiele A, Tárnok A, Machlitt J, Oeken J, Tannapfel A, Weber A, Bootz F. Preoperative detection of laryngeal cancer in mucosal swabs by slide-based cytometry. Eur J Cancer 2005; 41:445-52. [PMID: 15770781 DOI: 10.1016/j.ejca.2004.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The aim of our study was to evaluate slide-based cytometry in screening for laryngeal cancer using swabs a minimally invasive approach. Laser scanning cytometry (LSC) was used for the multiparametric analysis of cells stained for cytokeratin and DNA to determine the DNA-index (DI) of the tumour cells. Histograms with DI < 0.95, 1.05 < DI < 1.9, and 2.1 < DI were defined as DNA aneuploid. After subsequent haemotoxylin-eosin (HE)-staining, single cells were re-localised and an analysis by conventional cytology was performed. Additionally, routine histopathology of parallel biopsies was obtained in all cases. Fifty one swabs from 49 lesions were analyzed. Seven and 17 swabs, were classified as insufficient for LSC and cytology, respectively. One and two benign lesions, were misclassified as malignant, respectively. Out of 34 malignant lesions, LSC detected 25 and cytology 14. LSC was superior to cytology in all of the statistical parameters tested. This pilot study demonstrates the validity of LSC for the preoperative detection of malignancy in laryngeal tumours using swabs.
Collapse
Affiliation(s)
- Andreas O H Gerstner
- Department of Ororhinolaryngology/Surgery, University of Bonn, D-53105 Bonn, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Gerstner AOH, Trumpfheller C, Racz P, Osmancik P, Tenner-Racz K, Tárnok A. Quantitative histology by multicolor slide-based cytometry. Cytometry A 2004; 59:210-9. [PMID: 15170600 DOI: 10.1002/cyto.a.20054] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND In lymphatic organs, the quantitative analysis of the spatial distribution of leukocytes by tissue cytometry would give relevant information about alterations during diseases (leukemia, HIV, AIDS) and their therapeutic regimen, as well as in experimental settings. METHODS We have developed a semiautomated analysis method for laser scanning cytometry (LSC) termed "multiple thresholding," which is suitable for archived or fresh biopsy material of human lymph nodes and tonsils. Sections are stained with PI for nuclear DNA and up to four antigens using direct or indirect immunofluorescence staining. Measurement is triggered on DNA-fluorescence (argon laser, Ar) or on specific cell labeling. Due to the heterogeneity of cell density, measurements are performed repeatedly at different threshold levels (low threshold: regions of low cellular density, germinal center; high threshold: dense regions, mantle zone). Data are acquired by single- (Ar) or dual-laser excitation (Ar-HeNe) in order to analyze single- (FITC) up to four-color (FITC/PE/PECy5/APC) stained specimen. RESULTS Percentage and cellular density of cell-subsets is quantified in different microanatomical regions of the specimen. These data were highly correlated with manual scoring of identical specimens (r(2) = 0.96, P < 0.0001). With LSC, semiautomated operator-independent immunophenotyping in tissue sections of lymphatic organs with up to three antibodies simultaneously is possible. CONCLUSIONS We expect this tissue cytometric approach to yield new insight into processes during diseases and help to quantify the success of therapeutic interventions.
Collapse
|