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G Protein-Coupled Receptor Genes, PTGDR1, PTGDR2, and PTGIR, Are Candidate Epigenetic Biomarkers and Predictors for Treated Patients with HPV-Associated Oropharyngeal Cancer. Microorganisms 2020; 8:microorganisms8101504. [PMID: 33003642 PMCID: PMC7601742 DOI: 10.3390/microorganisms8101504] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/24/2020] [Accepted: 09/28/2020] [Indexed: 12/26/2022] Open
Abstract
Differences in the biology of human papillomavirus (HPV)-associated oropharyngeal cancers (OPCs) and HPV-negative OPCs may have implications in patient management. Early detection is imperative to reduce HPV-associated OPC mortality. Circulating tumor DNA (ctDNA) can potentially serve as a biomarker for monitoring clinically relevant cancer-related genetic and epigenetic modifications. We analyzed the methylation status of 24 G protein-coupled receptor (GPCR) genes in verification (85 OPC primary samples) and validation (8 OPC ctDNA samples) studies using quantitative methylation-specific polymerase chain reaction (Q-MSP). The Q-MSP-based verification study with 85 OPC primary samples revealed the GPCR genes that were significantly associated with recurrence in high methylation groups (≥14 methylated genes) with OPC and HPV-associated OPC (p < 0.001). In the Kaplan–Meier estimate and multivariate Cox proportional hazard analyses, 13 GPCR genes were significantly related to increased recurrence in the methylation group. Furthermore, the validation study on ctDNA showed that three of these genes (Prostaglandin D2 receptor 1: PTGDR1, Prostaglandin D2 receptor 2: PTGDR2, and Prostaglandin I2 Receptor: PTGIR) had a prediction performance as emerging biomarkers. We characterized the relationship between the methylation status of GPCR genes and outcomes in HPV-associated OPC. Our results highlight the potential utility of ctDNA methylation-based detection for the clinical management of HPV-associated OPC.
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Virulent Rhodococcus equi isolates from foals in Poland – pVapA characteristics and plasmid new variant, 85-kb type V. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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FRI0027 MRI-Proven Bone Marrow Oedema at Baseline is the Strongest Predictor Toward the Development of Rapid Radiographic Progression at 1 Year in Patients with Early-Stage Rheumatoid Arthritis: Results from Nagasaki University Early Arthritis Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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FRI0048 MRI Bone Erosion at Baseline Predicts the Subsequent Radiographic Progression in Early-Stage RA Patients Who Achieved in Sustained Clinical Good Response: Sub-Analysis from Nagasaki University Early Arthritis Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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AB0675 Correlation Between Microvascular Abnormalities in Videocapillaroscopy and Angiogenesis Modulators in Patients with Raynaud's Phenomenon Before and After Multiwave Locked System (MLS) Laser Therapy. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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The Prevalence of Ocular Diseases in Arabian Horses in Poland. Equine Vet J 2014. [DOI: 10.1111/evj.12323_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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THU0557 Nailfold Videocapillaroscopic Abnormalities and Selected Angiogenesis Modulators in Patients with Raynaud's Phenomenon after Multiwave Locked System (MLS) Laser Therapy. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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FRI0084 The presence of magnetic resonance imaging-proven osteitis at entry predicts the development of rapid radiographic progression in patients with early rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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AB0605 The changes in serum chemokines following leflunomide therapy in patients with rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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FRI0474 Association of serum vascular endothelial growth factor and angiopoietin-2 levels with clinical manifestations and nailfold capillaroscopic changes in patients with raynaud’s phenomenon. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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FRI0074 Stringent therapies improve both radiographic and clinical outcome in early-stage ra patients from japanese population: longitudinal study from nagasaki early arthritis cohort. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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A Novel Experimental Release of CO2 in the Marine Environment to Aid Monitoring and Impact Assessment. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.egypro.2013.06.227] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2513 POSTER Pancreatoduodenectomy With Portal Vein Resection and Recontruction. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71069-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Duration of hepatic vascular inflow clamping and survival after liver resection for hepatocellular carcinoma. Br J Surg 2011; 98:1284-90. [PMID: 21633950 DOI: 10.1002/bjs.7567] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2011] [Indexed: 12/27/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the influence of the duration of hepatic vascular inflow clamping (Pringle time) on the survival of patients with any type of liver background (not only cirrhosis) undergoing liver resection for hepatocellular carcinoma (HCC). METHODS Patients who underwent liver resection between April 2000 and December 2008 for HCC using the Pringle manoeuvre were identified retrospectively from an institutional database and divided into two groups: group 1 had a Pringle time of 60 min or less, and group 2 a Pringle time of more than 60 min. Univariable and multivariable analyses were performed to identify predictors of postoperative survival. Kaplan-Meier analysis was used to compare overall survival between the groups. RESULTS A total of 357 patients were enrolled; 242 patients had a Pringle time of 60 min or less (group 1), and 115 patients had a Pringle time of more than 60 min (group 2). Patients in group 2 had a shorter overall survival than those in group 1 (P = 0·010). Univariable analyses showed that type of HCC (primary versus recurrent), maximum tumour diameter, hepatic venous infiltration, platelet count, serum protein induced by vitamin K absence or antagonist II level, blood loss (700 ml or less versus more than 700 ml), duration of operation (300 min or less versus more than 300 min) and Pringle time (60 min or less versus more than 60 min) were predictive of postoperative survival. Multivariable analysis indicated that only Pringle time was associated with postoperative survival (odds ratio 1·83, 95 per cent confidence interval 1·08 to 3·10; P = 0·024). CONCLUSION Longer Pringle time is an important predictor of shorter postoperative survival in patients undergoing liver resection for HCC.
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Impact of a novel inflammation-based prognostic system on patients undergoing surgery for hepatocellular carcinoma: A retrospective study of 398 Japanese patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.4111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Usefulness of inflammation-based prognostic score for predicting survival and biliary stent patency in patients with unresectable malignant biliary obstruction. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Regulation of disease susceptibility and mononuclear cell infiltration into the labial salivary glands of Sjogren's syndrome by monocyte chemotactic protein-1. Rheumatology (Oxford) 2010; 49:1472-8. [DOI: 10.1093/rheumatology/keq079] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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The effect of heterotypic infections of older horses with equine influenza virus type-2 on some clinical and immunological parameters. Pol J Vet Sci 2010; 13:515-523. [PMID: 21033567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Twelve horses, all of them 10 years old, were vaccinated intramuscularly on 0 and 28 days of the experiment with inactivated vaccine containing only antigens of A-equi-2/Miami/63. Another three unvaccinated horses, each at the age of 10 years, were the negative control group. One, ten-year-old horse was vaccinated with commercial inactivated vaccine containing both antigens of A-equi-2/Miami/63 as well as A-equi-1/Praha/56 as positive control. Three horses were challenged intranasally with homotypic strain of Miami/63, while six other were challenged with heterotypic strains--three with Suffolk/89 and three with Kentucky/86. Three horses vaccinated with vaccine containing only strain A-equi-2/Miami/63 were not challenged. In the group of three unvaccinated horses, each one was challenged intranasally with different strains studied in this experiment. The horse vaccinated with commercial vaccine was not challenged. Replication of each strain was done in chick embryos. During the experiment blood from horses was collected for hematological and immunological examinations (antigen-specific and antigen-nonspecific lymphocyte transformation tests, lymphocyte immunophenotyping, antigen-specific leukocyte migration inhibition test and hemagglutination inhibition test). The statistical analysis showed that the dynamics of lymphocyte immunological reactivity in horses vaccinated with inactivated vaccine containing antigens of A-equi-2/Miami/63 in response to further antigen stimulation (in vitro) was different comparing the homotypic or nearly homotypic challenging with Miami/63 and Suffolk/89 respectively, to the more heterotypic one with the strain Kentucky/86. In horses challenged with classical homotypic strain of Miami/63 no clinical signs were observed. These results confirm that the vaccine shall consist of the strains currently circulating in the horse population.
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QS32. Erythropoietin, an Extrahematopoietic Cytokine: Basic and Clinical Research. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Automotive Exhaust Gas Sensor Based on an Electrochemical Cell Combined with a Resistive Gas Sensor. ACTA ACUST UNITED AC 2008. [DOI: 10.1166/sl.2008.505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Clinical assessment of oral malodor intensity expressed as absolute value using an electronic nose. Oral Dis 2008; 11 Suppl 1:35-6. [PMID: 18557215 DOI: 10.1111/j.1601-0825.2005.01086.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES In our previous study, scores determined via a multiple linear regression method (EN-MLR) involving an electronic nose provided objective halitosis-related measurements; however, this model afforded only relative expression exclusively. The objective of this investigation was to assess clinically oral malodor intensity expressed as an absolute value using an electronic nose. SUBJECTS AND METHODS Sixty-six subjects were evaluated based on results of an actual organoleptic test (OLT), measurements of volatile sulfur compound (VSC) concentrations, a score representing malodor intensity (EN-MI) as the absolute value and EN-MLR measured with an electronic nose system. Oral health parameters were also examined. RESULTS The OLT score served as a benchmark. The area under the receiver-operating characteristic (ROC) plots of EN-MI score (0.975) was significantly larger than that of log VSC (0.896) (P = 0.036); however, the area did not differ significantly from that of EN-MLR score (0.932). Percentage of teeth with pocket depth greater than or equal to 4 mm, tongue coating score and plaque control record displayed meaningful association with EN-MI score in multiple logistic regression analyses. CONCLUSION Oral malodor intensity expressed as an absolute value employing an electronic nose may be a suitable method for clinical evaluation of oral malodor.
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Some morphological, biochemical and immunological blood parameters in European bison with or without lesions in the digestive, respiratory, urinary and reproductive tracts. Pol J Vet Sci 2007; 10:137-142. [PMID: 17937185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Ninety-seven bison (39 males and 58 females) were culled out during three successive winter seasons. No infection with BHV-1 and BHV-5 or other viruses was detected by PCR and SN methods. Advanced pathological lesions observed in males exhibiting symptoms of posthitis/balanoposthitis are probably due to secondary infection by microorganisms present in the prepuce (Corynebacterium spp., Bacillus spp., Fusobacterium necrophorum, Staphylococcus spp. (coagulase negative) and Staphylococcus hyicus). Histopathological examinations of sections from prepuce and lips of pudendum showed the presence of Onchocercinae nematode (Onchocerca sp.). A comparison of biochemical and morphological blood parameters in the bison with or without lesions in the digestive (presence of parasites), respiratory, urinary and reproductive tracts revealed that the most variable parameter during reproductive organ disorder is the leukocyte count, while disorders in the urinary and digestive tracts coincided with the age of animals. In cases of digestive disorder most changes were observed in the number of neutrophils and concentration of urea. The number of red blood cells, monocytes, the level of alkaline phosphatase (AP) and hematocrit negatively correlated with age. Negative correlation was also observed between the number of neutrophils, level of creatinine and lymphocyte proliferation index. However, positive correlation was seen between erythrocyte sedimentation rate (Spearman's correlation coefficient), level of alanine aminotransferase (ALT) and protein, and age of the bison. Positive correlation was also observed between the lymphocyte count and lymphocyte proliferation index. The attempt to determine the reference values for blood biochemical and morphological parameters showed similarities to those of cattle.
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Seroprevalence of selected viral and bacterial pathogens in free-ranging European bison from the Białowieza Primeval Forest (Poland). Pol J Vet Sci 2007; 10:19-23. [PMID: 17388020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Blood was collected from bison that were selected between 1991 and 2001 for poor body condition, cachexia, lameness and balanoposthitis. Sera were tested for antibodies to bovine herpes virus type 1 (BHV-1), bovine viral diarrhoea virus (BVDV), foot-and-mouth disease virus (FMDV), parainfluenza virus type 3 (PI-3), Brucella abortus, Chlamydophila abortus, Coxiella burnetti, and Leptospira interrogans. The results of serological tests showed a prevalence of low titers of a serological reaction to Chlamydophila abortus (45.1%), bovine viral diarrhoea virus (29.5%), Leptospira interrogans (21.3%) and parainfluenza virus type 3 (13.9%). There were differences in the prevalence of antibodies to Ch. abortus between female and male bison. Futhermore, a relationship between age and antibodies to BVDV was observed in older bison. These results suggest that there is some transmission of bacterial and viral pathogens occurring between domestic and wild ruminants grazing in the same pastures in the peripherial areas of Bialowieza Primeval Forest.
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A case of symptomatic Morgagni's hernia and a review of Morgagni's hernia in Japan (263 reported cases). Hernia 2006; 10:521-4. [PMID: 16912844 DOI: 10.1007/s10029-006-0123-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2006] [Accepted: 07/13/2006] [Indexed: 10/24/2022]
Abstract
An 81-year-old female patient was admitted to the emergency room of our hospital with complaints of respiratory distress, abdominal ache, nausea, and intermittent vomiting. A plain X-ray of the abdomen and chest revealed air-fluid levels on the abdomen and the right side of the chest. Laboratory tests showed severe acidemia with a blood base excess level of -24.9 mmol/L. Since the patient was considered to have acute intestinal obstruction due to transverse colon herniation into the thorax through a foramen of Morgagni, emergency surgery was performed. Operative findings revealed that the retrosternal diaphragm had a defect of 5 cm in diameter and 20 cm in length with the transverse colon herniated into the thorax. The diaphragm defect was sutured first, and partial resection of the transverse colon was performed. After the operation, the patient had no symptoms and no recurrence has been observed during the 1-year follow-up. There have been 263 reported cases of Morgagani hernia in Japan. The case of the Morgagni hernia is reported here with some bibliographical comments.
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P25 Clinical assessment of oral malodor intensity expressed as absolute value using electronic nose. Oral Dis 2005. [DOI: 10.1111/j.1601-0825.2005.01105_48.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Changes in structure of lymphatic organs in foals died due to Rhodococcus equi infection. Pol J Vet Sci 2005; 8:219-24. [PMID: 16180583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The aim of this study was to investigate the structure of lymphatic organs in foals which died due to Rhodococcus equi infection. The material for this study consisted of 9 foals, of both genders, various breeds, 6-14 weeks old. The routine histopathological examination and immunocytochemical reaction for cytokeratine-3 receptors revealed the disturbances in the thymus epithelial cells development. This was manifested by a complete lack of cells expressing cytokeratine-3 receptors, as well as absence of normal thymocytes differentiation. The supposed thymus epithelial cells were very few, expressing faint reaction of cytokeratine-3 receptors. The relative deficiencies in the lymphatic tissue development in peripheral lymphatic organs were observed. It was concluded, that the observed pathological changes may indicate the inherited, not described yet gene failure, which was responsible for the thymus epithelial cells developmental disturbances, and was expressed with various intensity in examined foals. The causes of the fatal course of rhodococcosis in foals were primary disturbances in the immune competence.
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Prevalence of the suilysin gene in Streptococcus suis strains isolated from diseased and healthy carrier pigs. Pol J Vet Sci 2005; 8:141-5. [PMID: 15989134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Knowledge of virulence factors of Streptococcus suis is limited. Several virulence factor candidates have been proposed, among them suilysin, which is responsible for a toxic effect on epithelial cells. The aim of this study was to detect the suilysin gene sequence in Streptococcus suis strains of various origin. In total 63 Streptococcus suis isolates were investigated. Forty four of them originated from tissues of streptococcosis affected animals. The remaining 19 strains were isolated from tonsils of healthy carrier pigs. Suilysin gene specific sequence was detected in 79% of the strains tested. In isolates obtained from pigs with signs of streptococcosis this gene sequence was recorded in 85% of cases. In Streptococcus suis strains isolated from healthy carrier pigs the suilysin gene was detected in 63% of the isolates. It seems that suilysin toxic activity is only one of the many steps involved in the pathogenesis of Streptococcus suis infection and that strain's virulence cannot be stated only on the basis of suilysin gene sequence presence.
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The occurrence of pulmonary hypertension in patients with systemic sclerosis hospitalized in the Department of Rheumatology and Internal Diseases Medical University of Białystok in years 2003-2004. ROCZNIKI AKADEMII MEDYCZNEJ W BIALYMSTOKU (1995) 2005; 50 Suppl 1:297-300. [PMID: 16119691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Pulmonary hypertension (PH) is one the most fatal complications of systemic sclerosis (SSc). The aim of the present study was to investigate the occurrence of PH in SSc patients hospitalized in Department of Rheumatology and Internal Diseases University Hospital of Bialystok in years 2003-2004. PH was defined as pulmonary artery systolic pressure (PASP) higher than 35 mmHg as evaluated by ECHO-Doppler. We found PH in 23 out of 53 (43%) SSc patients included in the study. In the majority of patients 20/23 (87%) PH coexisted with the presence of scleroderma lung disease as evaluated by high resolution computed tomography of the lungs. In the remaining 3/23 (13%) patients isolated (arterial) PH was detected. Patients with isolated PH tend to have higher values of PASP (82 +/- 39.0 mmHg) than those with PH and interstitial lung disease (42.5 +/- 6.4 mmHg). The results of our study indicate that PH is a frequent complication of SSc.
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Abstract
A recently developed electronic nose has not yet been clinically applied to evaluations of oral malodor. This investigation sought to determine whether an electronic nose could clinically assess oral malodor. Twenty-nine healthy adults and 49 patients were assessed by results of an actual organoleptic test, a score representing malodor strength with an electronic nose in "top-note" mode (top-note score), and measurements of volatile sulfur compound (VSC) concentrations. The correlation coefficient between top-note and actual organoleptic scores (r = 0.71) was comparable with the log VSC and actual organoleptic scores (r = 0.63). However, the area under the receiver-operating characteristic plots for top-note score was significantly larger than that for log VSC. In logistic regression analyses with top-note score as a dependent variable, probing depth, tongue coating, and plaque control record each had independent associations. Our findings suggest that the top-note score from an electronic nose examination may be useful for the clinical evaluation of oral malodor.
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Acute CO2 tolerance during the early developmental stages of four marine teleosts. ENVIRONMENTAL TOXICOLOGY 2003; 18:375-382. [PMID: 14608607 DOI: 10.1002/tox.10139] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Ocean sequestration of CO2 is proposed as a possible measure to mitigate climate changes caused by increasing atmospheric concentrations of the gas, but its impact on the marine ecosystem is unknown. We investigated the acute lethal effect of CO2 during the early developmental stages of four marine teleosts: red sea bream (Pagrus major), Japanese whiting (Sillago japonica), Japanese flounder (Paralichthys olivaceus), and eastern little tuna (Euthynnus affinis). The percentages of larvae that hatched and survived were not affected by exposure to water with a PCO2 of 1.0 kPa (= 7.5 mmHg) within 24 h. Median lethal PCO2 values for a 360-min exposure were 1.4 kPa (cleavage), 5.1 kPa (embryo), 7.3 kPa (preflexion), 4.2 kPa (flexion), 4.6 kPa (postflexion), and 2.5 kPa (juvenile) for red sea bream; 2.4 kPa (cleavage), 4.9 kPa (embryo), 5.9 kPa (preflexion), 6.1 kPa (flexion), 4.1 kPa (postflexion), and 2.7 kPa (juvenile) for Japanese whiting; 2.8 kPa (cleavage) and > 7.0 kPa (young) for Japanese flounder; and 11.8 kPa (cleavage) for eastern little tuna. Red sea bream and Japanese whiting of all ontogenetic stages had similar susceptibilities to CO2: the most susceptible stages were cleavage and juvenile, whereas the most tolerant stages were preflexion and flexion.
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The use of chosen serological diagnostic methods in Lyme disease in horses. Part II. Western blot. Pol J Vet Sci 2003; 5:79-84. [PMID: 12189953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
In this investigation the Western blot test was treated as a method verifying results of the IFA, commercial ELISA and standardized ELISA tests (described in Part I). The verifying investigations were performed on 82 serum samples, which in the commercial ELISA were positive in 36 cases, dubious in 31 cases and negative in 15 cases as well as on 5 serum samples obtained from horses infected with Leptospira spp., which in the ELISA commercial were dubious (total of 87 sera samples). The antigens, against which the immunological response in horses was directed, were also established. The Milenia--Blot--Borrelia IgG test (MIDBO IgG-Kit 30 TESTS: DPC Bierman GmbH) was used in the investigation. In view of species differences, rabbit anti-horse IgG (whole molecule) alkaline phosphatase conjugate, no A6063 SIGMA-ALDRICH was used interchangeably. Also the control sera were substituted with the horse control sera. It was demonstrated that the Western blot test is the most reliable in the serological diagnosis of B. burgdorferi infection in horses. The commercial ELISA and standardized ELISA tests represent a lower diagnostic value than the Western blot test, although similar to each other, while the value of the IFA is minimal. In the Western blot test antigens were established against which the immunological response in horses in mostly directed. In the sera evaluated in this test as positive the presence of antibodies, mainly against antigens with the following molecular weights: 41 kDa, 62/60 kDa, 93 kDa, 72 kDa, 34 kDa (OspB), 66 kDa was noted. At the same time, antibodies contained in the sera accepted as negative, in 55.5% cases also reacted with the antigen of 41 kDa. It points to its minimal specificity. On the basis of the results obtained it is recommended that serological examination of horses should be with the ELISA and that positive or dubious results should be verified with the Western blot test.
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The use of chosen serological diagnostic methods in Lyme disease in horses. Part I. Indirect immunofluorescence and enzyme-linked immunosorbent assay (ELISA). Pol J Vet Sci 2003; 5:71-7. [PMID: 12189952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The investigations aimed to establish the reliability of the chosen serological tests designed for the diagnosis of Lyme borreliosis in horses. The investigations were carried out in five Horse Breeding Centres (OHK). Statistical analysis methods were used to determine sample size for particular centres: Krasne (Kr)--49, Łack (Ł)--21, Walewice (W)--111, BogusŁawice (B)--17, Kozienice (K)--61. The experimental material comprised the chosen horses from which blood samples were collected in order to obtain sera. The test used for indirect immunofluorescence assay (IFA No 75941, Bio-Mérieux) is commercially designed for the investigation of human sera and thus needed a prior species adaptation and standardization; ELISA (MRL DIAGNOSTICS, No EL0400G) which was also species adapted and stardandized and ELISA commercially assigned for the examination of dog or horse sera (Die System Diagnostica GmbH Borrelia burgdorferi Veterinary ELISA No. 122.00 Genzyme Virotech GmbH). In the IFA test the highest share of positive results was obtained in respect of the sera from OHK in (K)--60.7% and then in (B)--52.9%, (Ł)--42.9%, (W)--40.5%, (Kr)--38.7%. In the standardized ELISA the highest percent of positive results, amounting to 33.3%, was obtained in respect of the sera from (Ł), and then from (W)--20.7%, (K)--11.5%, (Kr)--10.2% and (B)--5.9%. The percent of positive results obtained in the commercial ELISA also agreement on a high level: the sera originating from (W) were positive in 18.9%, from (K)--9.8%, (Ł)--9.5%. (B)--5.9% and (Kr)--4.1%. Both ELISAs showed high agreement although the standardized test was characterized by a greater tendency for suggesting the presence of B. burgdorferi infection and the agreement of these two ELISAs with the IFA was not so strong. The IFA showed the highest tendency for suggesting the presence of the B. burgdorferi infection, being characterized by the highest percent of false positive results.
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Relationships among ecology, demography and diseases of European bison (Bison bonasus). Pol J Vet Sci 2003; 6:261-6. [PMID: 14703870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
The bison population in the Bialowieza Forest in Poland has now grown to approximately 300, while the herds in the Belarusian part of the forest total about 240 bison. The first signs of a health problem in these herds appeared in 1980, when two cases of balanoposthitis were detected in two bulls (2 and 5 years of age). Since 1980 research has been conducted to explain the cause of diseases, particularly balanoposthitis, and to monitor the health of bison in Bialowieza Forest. A total number of 614 bison (294 male and 320 female) of different ages was eliminated between 1980 and 2000. Not all the culled bison were examined (postmortem analysis, histopathological, bacteriological, virological and toxicological examinations, serological tests, molecular research). Based on the increase in numbers, reproduction in this population for the past 21 years is generally considered successful. Among 182 male bison eliminated during 1990-2000, only 85, or 47%, of the animals had balanoposthitis. Thus, the percentage of balanoposthitis cases went from 100% during the 1980s down to 47% in the past decade. It appears that the culling process has been a major factor leading to this decrease. It can be assumed that a set of factors is involved in the appearance of the disease (Corynebacterium spp., Bacillus sp., Pseudomonas aeruginosa, Escherichia coli, Ureoplasma spp, Fusobacterium necrophorum, Streptoccocus spp., Staphyloccocus spp.) while opportunistic infections including nematodes (Onchocerca spp.) are responsible for the occurrence of secondary lesions.
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[Health threat of acquiring animal diseases transmitted by animals or materials of animal origin]. PRZEGLAD EPIDEMIOLOGICZNY 2001; 55:213-6. [PMID: 11496791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Laparoscopic intragastric resection of gastric leiomyoma using needlescopic instruments. Case report. Surg Endosc 2001; 15:414. [PMID: 11409411 DOI: 10.1007/s004640041001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Laparoscopic intragastric resection of gastric leiomyoma was performed using needlescopic instruments. The patient was a 71-year-old man who had a 2-year history of gastric submucosal tumor 2 cm in diameter located near the esophagocardiac junction. After getting informed consent, we performed a laparoscopic intragastric tumor resection under an oral endoscope. There were no intra- or postoperative complications. The patient was discharged uneventfully. Histopathologic diagnosis of the tumor was leiomyoma. Laparoscopic intragastric resection of a benign gastric submucosal tumor using needlescopic instruments is technically feasible and as safe as a less invasive procedure.
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Flow cytometric examination of DNA ploidy, p53 and bcl-2 expression in primary squamous epithelial pulmonary carcinoma. ROCZNIKI AKADEMII MEDYCZNEJ W BIALYMSTOKU (1995) 2000; 44:180-9. [PMID: 10697433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The aim of this study was answering the question whether cytofluorimetric determining of DNA ploidy, p53 and bcl-2 expression in tumour cells may enhance the diagnosis of squamous epithelial lung carcinoma. Samples of neoplastic tissue were taken from 11 operated patients. DNA staining was performed with propidium iodide. p53 and bcl-2 expression was evaluated by using monoclonal antibodies. By assessing of DNA ploidy we observed increased proliferative activity and, at the same time, high rate of the cell necrosis. In the analysis of p53 protein the presence of antigen was observed on average in 7.1 +/- 2.4, 15.1 +/- 3.9, and 19.8 +/- 4.1% of normal cells of the pulmonary tissue, the peripheral part of the tumour and cells of the central part of the tumour, respectively. bcl-2 was found on average in 7.3 +/- 2.2, 9.9 +/- 3.1, and 12.4 +/- 3.19% of the above cells, respectively. These results show that the technique of cytofluorimetric evaluation of p53 and bcl-2 proteins can be useful in diagnosis of pulmonary cancer in addition to classic histological and immunohistochemical methods.
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[A case of perforated diverticulum of the transverse colon]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 2000; 97:181-5. [PMID: 10707587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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The site of absorption of cyclosporin A in the small intestine of the rat: a preliminary report. Transplant Proc 1999; 31:2659-60. [PMID: 10500760 DOI: 10.1016/s0041-1345(99)00487-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Epizootic of equine influenza in 1969 in Poland. ARCHIVUM VETERINARIUM POLONICUM 1999; 33:139-45. [PMID: 10187979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Epidemiological observations on the course and spread of equine influenza in Poland during the 1969 epizootic were carried out. The dynamics of the spread of the disease in the country are shown graphically by voivodship. The disease incidence and mortality rates for the entire country are also shown. The highest incidence of disease and mortality rates were found to be in November 1969. A/equi-2/Warsaw/69 was identified as the causal virus. It caused the largest epizootic in the country since 1954.
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Abstract
BACKGROUND Our aim was to compare the effectiveness and patient satisfaction with flexible sigmoidoscopy performed by a registered nurse, general surgeons, and gastroenterology fellows. METHODS Consecutive outpatients referred for sigmoidoscopy were assigned to have the procedure performed by the first available provider. Depth of insertion of the sigmoidoscope, complications, duration of the procedure, and percentage of patients with adenomas were recorded. After the procedure, patients completed a validated patient satisfaction questionnaire. RESULTS Mean depth of insertion was less for general surgeons compared with the nurse and gastroenterology fellows (50 vs 53 vs 54 cm, respectively; p = 0.01). Mean duration of procedure was longer for the nurse compared with general surgeons and gastroenterology fellows (8.3 vs 7.6 vs 6.8 min, respectively; p = 0.0001). Percentage of patients with adenomas was similar among patients who underwent sigmoidoscopy by the endoscopists (7% vs 8% vs 9%; p = 0.81). No differences were detected between endoscopists for overall satisfaction (p = 0.60), technical skills of the endoscopist (p = 0.58), communication skills of the endoscopist (p = 0.61), or interpersonal skills of the endoscopist (p = 0.59). CONCLUSION No clinically significant differences in effectiveness or patient satisfaction were detected with flexible sigmoidoscopy performed by a registered nurse, general surgeons, or gastroenterology fellows.
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Experience with three-port laparoscopic cholecystectomy. JOURNAL OF HEPATO-BILIARY-PANCREATIC SURGERY 1999; 5:309-11. [PMID: 9880780 DOI: 10.1007/s005340050051] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
After considerable experience with laparoscopic cholecystectomy (LC) using four ports, we began using three-port LC in October 1993 and have performed 130 LCs with this procedure up to May 1996. The procedure was successful in 119 patients. In 6 patients fourth port was used, and in another 5, the procedure was converted to open laparo-tomy. Cooperative manipulation of the surgical instruments between the operator and assistant is very important for this procedure, for exposing Calot's triangle and dissecting the gallbladder from the gallbladder bed. The use of an ultrasonic aspiration system (Sumisonic ME 2400; Sumitomo Bakelite, Tokyo, Japan) made it easier to identify the cystic duct and artery, especially in patients with chronic inflammation or dense adhesions. We encountered no problems with cannulation into the cystic duct for intraoperative cholangiography, and there were no intra- and postoperative complications in this series. We achieved good results, similar to those achieved with the four-port technique. This technique is technically feasible and safe, and it has esthetic and cost advantages compared with the four-port technique. However, the operator who performs three-port LC should not hesitate to add another port, or to convert to open laparotomy, whenever any difficulties occur during this procedure, to prevent critical complications.
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Acute effects of kaolinite suspension on eggs and larvae of some marine teleosts. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART C, PHARMACOLOGY, TOXICOLOGY & ENDOCRINOLOGY 1998; 120:449-55. [PMID: 9827063 DOI: 10.1016/s0742-8413(98)10022-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To evaluate the effects of suspended inert particles on the early life stages of the eggs and larvae of four marine fish species, Pagrus major, Acanthopagrus schlegeli, Oplegnathus fasciatus and Parapristipoma trilineatum were exposed to kaolinite suspensions up to 10,000 mg l-1. Hatching success and developmental rates of eggs all species were not significantly affected by 10,000 mg l-1 suspension over a 24-h exposure period. Exposure of larvae of each species to suspensions ranging from 32 to 10,000 mg l-1 for 1, 3 and 12 h, however, resulted in over 50% mortality at 1000 mg l-1 for 12 h. Larvae were much less tolerant to kaolinite exposure than eggs probably due to their relatively larger and more delicate body surface compared to the tough outer membrane of eggs. Kaolinite particles adhered more readily to eggs and larvae of P. major than to those of the other species.
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Trials of protecting Poland from acquiring bovine spongiform encephalopathy. Arch Immunol Ther Exp (Warsz) 1998; 46:65-8. [PMID: 9613702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The article contains a short review on transmissible spongiform encephalopathies, Creutzfeld-Jakob disease (CJD) and bovine spongiform encephalopathy (BSE), technology of meat and bone meal production, regulations and monitoring. Poland has imposed a ban on the importation of live cattle, sheep, and food products of ruminant origin from countries where BSE has been identified. Imported meat should be documented with a valid certificate stating that is does not originate from cattle whose parents were imported from Holland, United Kingdom, Ireland and Switzerland. Currently no licences are being issued for importation of live cattle, bovine semen or bovine embryos. The Polish Ministry of Agriculture has appeal to born meal producers to observe the Polish Norm PN-92R-64809.
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Pharmacokinetic and pharmacodynamic evaluation of central effect of the novel antiallergic agent betotastine besilate. ARZNEIMITTEL-FORSCHUNG 1997; 47:1116-24. [PMID: 9368705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Betotastine besilate (betotastine CAS 125602-71-3, TAU-284) is a novel antiallergic agent with histamine H1 receptor antagonistic activity. As the classical antihistamines are known to produce drowsiness, the present study was conducted to assess a possible influence of betotastine on the central nervous system (CNS). Measurement of the drug concentration in brain and plasma after i.v. administration revealed that betotastine, as well as cetirizine and epinastine, poorly penetrate into the CNS, while terfenadine do so slightly more and ketotifen remarkably more. In vitro receptor binding assays demonstrated that betotastine is a highly specific histamine H1 receptor ligand, having no significant binding affinity for histamine H3, adrenergic alpha 1, alpha 2, beta, dopamine D2L, serotonin 5-HT2, muscarinic, and benzodiazepine receptors. On global behavior of mice, oral administration of betotastine did not produce any marked changes at the doses of 100-1000 mg/kg, but suppressed huddling behavior at 1000 mg/kg and caused slight mydriasis at 300 mg/kg and more. Betotastine did not significantly affect spontaneous motor activity (SMA) and hexobarbital-induced anesthesia in mice up to 300 mg/kg p.o. In the sleep-wakefulness pattern of cats, it reduced the total duration of sleep at 10 mg/kg p.o., but did not show significant effect at 30 and 100 mg/ kg p.o. Cetirizine showed a similar profile as betotastine in these experiments, whereas ketotifen and epinastine induced sedative signs or toxic symptoms in lower doses, and terfenadine affected SMA and the anesthesia at a high dose. These results suggest the very low liability of betotastine to produce sedative side-effect in a therapeutic dose range.
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Esophageal transection using a biofragmentable anastomosis ring in dogs. Surg Today 1995; 25:802-5. [PMID: 8555698 DOI: 10.1007/bf00311456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Since the first publication on the new anastomosis technique using a biofragmentable anastomosis ring (BAR) by Hardy in 1985, various studies have been performed to investigate the superiority of this type of anastomosis, and it has since been reported that the BAR was safely used not only in large and small bowel anastomosis, but in cholecystojejunal and gastrojejunal anastomosis as well. In this study, the feasibility of the BAR for esophageal transection was investigated. Seven dogs were operated on, and one died of intraabdominal bleeding on the operative day while another died of leakage at the site of gastrotomy on the 3rd postoperative day. These deaths were all considered to be due to simple technical errors not directly related to the use of the BAR. The postoperative recovery of the other five dogs was uneventful, and the ring eventually disintegrated into several small fragments that passed out of the body in the faces between the 14th and 21st postoperative days. The dogs were killed on the 28th postoperative day, and both gross and histological examinations, revealed that the transection had been successful. Neither leakage nor significant stenosis at the site of transection was found. Our results suggested that the BAR could be used for esophageal transection and is thus recommended as an easy-to-learn, time-saving, and safe technique for esophageal operations.
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Laparoscopic transabdominal preperitoneal herniorrhaphy using abdominal wall-lifting method under regional anesthesia: a preliminary report. JOURNAL OF LAPAROENDOSCOPIC SURGERY 1995; 5:215-20. [PMID: 7579672 DOI: 10.1089/lps.1995.5.215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This report describes a laparoscopic transabdominal preperitoneal herniorrhaphy of groin hernias using an abdominal wall-lifting method under regional anesthesia as compared with pneumoperitoneum under general anesthesia. The series of studies involved the repair of 20 groin hernias; 7 hernias were direct, 11 were indirect, and 2 were femoral. These included 7 recurrent, 1 incarcerated, and 4 bilateral hernias. There were no intraoperative complications, and both procedures required no conversion to open surgery. There are no significant differences between the two groups in operative time and postoperative hospital stay. The only postoperative complication of our procedure was temporary inguinal pain in 2 cases. The follow-up period ranged from 8 to 17 months. To date, no recurrence has developed. We conclude that our procedure is a safe, technically feasible, and useful method to perform laparoscopic herniorrhaphy for groin hernias.
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Novel lowly immunosuppressive antitumor fluorouridine derivative, UK-21: antitumor activity and effect on humoral immune response in mice. Cancer Chemother Pharmacol 1994; 34:216-24. [PMID: 8004754 DOI: 10.1007/bf00685080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Our previous studies indicated that a newly synthesized 5-fluorouridine derivative, 2',3',5'-tris-O-[N-(2-n-propyl-n-pentanoyl)glycyl]-5-fluorouridine (UK-21), revealed its antitumor activity by being converted to 5-fluorouridine (5-FUR) and showed a low level of immunological side effects. However, the bioavailability of UK-21 given orally did not seem to be good. In the present study, we focused on the antitumor and immunosuppressive activities of UK-21 given i.p. to mice. UK-21 suppressed the growth of L-1210, P388 and EL4 leukemias inoculated i.v. into corresponding syngeneic mice and both the growth of Lewis lung carcinoma transplanted s.c. and its subsequent metastasis to the lung. UK-21 showed antitumor activity at doses almost 10 times lower than those of 5-fluorouracil (5-FU). The side effects of UK-21, especially on immune functions, were examined in comparison with those of 5-FUR, 5-FU, and cyclophosphamide (CY) at doses producing comparable antitumor activity. The suppressive effect of UK-21 on IgM and IgG antibody formation in mice immunized with ovalbumin was clearly weaker than that of 5-FUR, 5-FU, and CY. The suppressive effect of UK-21 on thymus weight was markedly weaker than that of 5-FU and CY. The reduction of WBC counts induced by UK-21 was also lower than that produced by any other agent. The results reported herein suggest the strong possibility of UK-21 being developed as a novel anticancer drug with cytotoxic mechanisms different from those of 5-FU. Our study also points to the chemical modification of 5-FUR as a feasible way of developing new anticancer drugs.
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[Antitumor effect of LAK cells on CDDP resistant head and neck carcinoma cell line]. Gan To Kagaku Ryoho 1993; 20:1843-7. [PMID: 8379677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Antitumor effects of lymphokine-activated killer (LAK) cells on cisplatin resistant oral carcinoma cell line were evaluated in vitro by 51Cr release assay and in vivo by nude mouse model. Oral carcinoma cell line (KB) and its subline KBrc resistant to cisplatin were used as target cells. We observed the antitumor effect of LAK cells on both KB and KBrc cells in terms of cytotoxicity of 51Cr release assay, and tumor growth inhibition of nude mouse assay. However, when we compared the antitumor effect between KB and KBrc cells, KBrc cells demonstrated a significant decrease in susceptibility to killing by LAK cells in the in vitro and in vivo model in comparison with the antitumor effect of LAK cells on KB cells. These results, which were not similar to the results of previous studies reported, suggest that alternations of characteristics of tumor cells such as acquired drug resistance result in the decrease in susceptibility of tumor cells against LAK cells.
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Inhibition of head and neck tumor cell colony growth by lymphokine activated killer cells. ACTA OTO-LARYNGOLOGICA. SUPPLEMENTUM 1993; 500:138-41. [PMID: 8452012 DOI: 10.3109/00016489309126198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The antiproliferative effect of lymphokine activated killer (LAK) cells on head and neck tumor cells has not previously been elucidated. We studied the inhibitory effects of recombinant interleukin-2 activated lymphocytes on tumor colony formation in semisolid agar, using head and neck tumor cells prepared from established tumor cell lines (K562, HT29, HLaC78) and xenografted head and neck squamous cell carcinomas on nude mice (XKN, XLL, XFL, XKF). LAK cells demonstrated a significant inhibitory effect on colony formation. The effects of LAK cells on cultured tumor cell lines were evaluated in a dose dependent manner using effector: target ratios. In addition, the colony formation of tumor cells derived from xenografted nude mouse was inhibited by LAK cells. These results suggest that LAK cells generate an antiproliferative effect on head and neck tumor cells.
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