199 results on '"Nair CK"'
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2. Spring-loaded syringe for multiple rapid injections
- Author
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Srinivas, CR, primary, Somani, Anirudh, additional, Shashidharan Nair, CK, additional, and Mylswamy, Thirumurthy, additional
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- 2017
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3. A phase I trial of tocoferol monoglucoside in patients undergoing hemi-body radiation
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Huilgol, N., Nair, CK, Merhotra, P., and Kagiya, V.
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Vitamin E -- Research ,Radiotherapy -- Observations -- Research ,Health ,Observations ,Research - Abstract
Byline: N. Huilgol, CK. Nair, P. Merhotra, V. Kagiya Purpose : To evaluate Tocoferol monoglucoside (TMG), a water soluble vit. E. in a phase I trial, as a radiation protector [...]
- Published
- 2005
4. Retrospective audit of clinico-pathologic features and treatment outcomes in a cohort of elderly non-Hodgkin's lymphoma patients in a tertiary cancer center
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Nair, CK, primary, Patil, VM, additional, Raghavan, V, additional, Babu, S, additional, and Nayanar, S, additional
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- 2015
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5. Patterns of care in geriatric cancer patients – An audit from a rural based hospital cancer registry in Kerala
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Patil, VM, primary, Chakraborty, S, additional, Dessai, S, additional, Kumar, SS, additional, Ratheesan, K, additional, Bindu, T, additional, Geetha, M, additional, Sujith, K, additional, Babu, S, additional, Raghavan, V, additional, Nair, CK, additional, Syam, V, additional, Surij, S, additional, and Sathessan, B, additional
- Published
- 2015
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6. An audit of febrile neutropenia cases from a rural cancer center in India
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Patil, VM, primary, Chakarborty, S, additional, Kumar, MS, additional, Geetha, M, additional, Dev, S, additional, Samuel, S, additional, Ahmed, G, additional, Nayanar, SK, additional, Vineetha, R, additional, and Nair, CK, additional
- Published
- 2014
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7. Protection of cellular DNA and membrane from [gamma]-radiation-induced damages and enhancement in DNA repair by sesamol.
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Nair GG and Nair CK
- Published
- 2010
8. Radioprotection by alpha-Lipoic Acid Palladium Complex Formulation (POLY-MVA) in Mice.
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Ramachandran L, Krishnan CV, and Nair CK
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- 2010
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9. Thromboembolism in patients with atrial fibrillation with and without left atrial thrombus documented by transesophageal echocardiography.
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Nair CK, Holmberg MJ, Aronow WS, Shen X, Li H, Lakkireddy D, Nair, Chandra K, Holmberg, Mark J, Aronow, Wilbert S, Shen, Xuedong, Li, Huagui, and Lakkireddy, Dhanunjay
- Published
- 2009
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10. Dynamic commissural splint.
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Nair CK, Sivagami G, Kunnekel AT, Naidu ME, Nair, Chandrasekharan K, Sivagami, G, Kunnekel, Ashish T, and Naidu, Munirathnam E
- Abstract
Microstomia, an abnormally small oral orifice, can manifest as a sequela of burns involving the oral and perioral tissues due to contraction of the tissues and hypotonia of the circumoral musculature. Regardless of the etiology, scar contracture results in deformities that produce esthetic and functional impairment. Changes in the circumoral anatomy prevent optimal dental care and maintenance of good oral hygiene. The anatomic changes may detrimentally alter eating, speech, and mandibular motion. Prosthetic treatment involves providing physical resistance to scar contracture by maintaining the oral commissures in their normal relationship by means of a splint. This article describes a method to fabricate a dynamic commissural splint and describes its use in two cases. [ABSTRACT FROM AUTHOR]
- Published
- 2008
11. Increased vascular alpha1-adrenergic sensitivity in patients with renal failure: receiving recombinant erythropoeitin.
- Author
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Abiose AK, Aronow WS, Moreno H Jr., Nair CK, Blaschke TF, and Hoffman BB
- Published
- 2007
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12. Differences in treatment and in outcomes between idiopathic and secondary forms of organizing pneumonia.
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Basarakodu KR, Aronow WS, Nair CK, Lakkireddy D, Kondur A, Korlakunta H, Valasareddi SL, Lem V, and Schuller D
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- 2007
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13. Efficacy and safety of intrapleural instillation of alteplase in the management of complicated pleural effusion or empyema.
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Thommi G, Nair CK, Aronow WS, Shehan C, Meyers P, and McLeay M
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- 2007
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14. Pseudo-pseudoaneurysm of the left ventricle: a rare complication of acute myocardial infarction: a case report and literature review.
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Lakkireddy DR, Khan IA, Nair CK, Korlakunta HL, and Sugimoto JT
- Abstract
Rupture of the cardiac wall is usually a fatal complication of acute myocardial infarction within the first 2 weeks. However, in certain cases a ruptured ventricular wall is contained by overlying adherent pericardium called pseudoaneurysm, whereas a true aneurysm is one that is caused by scar formation resulting in thinning of the myocardium. The patients with pseudoaneurysm may survive until the aneurysm ruptures. In exceedingly rare instance, the rupture of the myocardium is not transmural but remains circumscribed within the ventricular wall itself, but in communication with the ventricular cavity. This finding is defined as pseudo-pseudoaneurysm. The authors report a case of postinfarction posterobasal pseudo-pseudoaneurysm along with review of the literature on the subject. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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15. Diagnostic and prognostic value of Holter-detected ST-segment deviation in unselected patients with chest pain referred for coronary angiography: a long-term follow-up analysis.
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Nair CK, Khan IA, Esterbrooks DJ, Ryschon KL, Hilleman DE, Nair, C K, Khan, I A, Esterbrooks, D J, Ryschon, K L, and Hilleman, D E
- Abstract
Objective: To evaluate the diagnostic and prognostic significance of ST-segment deviation detected by ambulatory Holter monitoring in unselected chest pain patients referred for coronary angiography.Methods: Two hundred seventy-seven patients (71% were men) who underwent coronary angiography for evaluation of chest pain were studied with 24-h ambulatory Holter monitoring within 72 h of angiography. A lumen diameter reduction of > or = 50% was considered coronary artery disease. The ST-segment deviation was defined as > or = 1-mm deviation from the baseline lasting > or = 1 min separated by a minimum of 1 min. The patients were followed up for 65 +/- 21 months (mean +/- SD) for occurrences of death, myocardial infarction, hospitalization for unstable angina, and need for revascularization.Results: Of the 277 patients, 223 (80%) had coronary artery disease. The prevalence of coronary artery disease was not significantly different in patients with (43 of 48 patients; 90%) and without (180 of 229 patients; 79%) Holter-detected ST-segment deviation. The diagnostic accuracy of Holter-detected ST-segment deviation in predicting the presence of coronary artery disease was poor (33%), with a sensitivity of 19% and a specificity of 91%. The presence of Holter-detected ST-segment deviation was not predictive of future cardiac events or death.Conclusion: The ST-segment changes detected on ambulatory Holter monitoring are of limited value in identifying coronary artery disease and predicting the future adverse cardiac events or death in unselected patients with chest pain. [ABSTRACT FROM AUTHOR]- Published
- 2001
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16. Squamous cell carcinoma in epidermolysis bullosa.
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Nair CK, Preethi TR, Somanathan T, and Pandey M
- Abstract
Epidermolysis bullosa (EB) is a group of inherited blistering disorders that are divided into three categories based on the plane of cleavage of the blister, mode of inheritance, and the presence or absence of scars. Squamous cell carcinoma developing in epidermolyis bullosa is rare and presents a therapeutic dilemma. The authors report a case of congenital epidermolysis bullosa with locally advanced squamous cell carcinoma. [ABSTRACT FROM AUTHOR]
- Published
- 2004
17. Off-label use of chemotherapy drugs: Look before you leap.
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Kumar M, Nair CK, and Satheesan B
- Published
- 2011
18. Effect of medical therapy on left ventricular ejection fraction in patients with systolic heart failure and narrow QRS duration with and without ischemic heart disease and left ventricular mechanical dyssynchrony.
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Nair CK, Shen X, Aronow WS, Li H, Holmberg MJ, Korlakunta H, Hee T, Maciejewski S, and Esterbrooks DJ
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- 2010
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19. Cardiac resynchronization therapy in patients with intrinsic and right ventricular pacing-induced left bundle branch block pattern.
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Shen X, Aronow WS, Holmberg MJ, Li H, Nair CK, Korlakunta H, and Esterbrooks DJ
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- 2009
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20. Intensive care unit admission rates and factors associated following Autologous stem cell transplantation-real-world experience from a tertiary center in rural India.
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Bain GG, Nair CK, Shenoy PK, Raghavan V, Menon A, and Devi N
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- Humans, Male, Retrospective Studies, Female, India epidemiology, Adult, Middle Aged, Young Adult, Hematopoietic Stem Cell Transplantation adverse effects, Hematopoietic Stem Cell Transplantation methods, Aged, Adolescent, Rural Population statistics & numerical data, Intensive Care Units statistics & numerical data, Transplantation, Autologous, Tertiary Care Centers
- Abstract
Purpose: Infectious and other complications can necessitate admission to the intensive care unit (ICU) in autologous stem cell transplantation (ASCT). Data on need for ICU care, impact of various pre- and peri-transplant characteristics on requirement of ICU care and outcomes are scarce from the developing world., Methods: A retrospective case record review of ASCT cases was conducted. Pre- and peri-transplant characteristics like infection within 4 weeks of transplant, mucositis, surveillance culture positivity, peri-transplant infections, comorbidity, and time to neutrophil and platelet engraftment were noted., Results: A total of 109 patients underwent 109 ASCTs. Most common diagnosis was the plasma cell disorder in 75 (69%) patients. Forty-eight (45%) patients had peri-transplant infections. Fifteen (14%) patients had infections with multi-drug resistant (MDR) organisms. Fifteen (14%) patients required ICU care, the most common reason being hypotension in nine patients (8.3%). Four patients (3.7%) required non-invasive ventilation, and one (0.9%) required invasive ventilation. Mortality rate was 1.8% (two patients). Factors associated with the need for ICU care were time to platelet engraftment (median 15 days among those required ICU care versus 13 days who did not, p = 0.04) and presence of peri-transplant infection showed a trend toward ICU care need (19% among those required ICU care versus 7% in those who did not, p = 0.05)., Conclusion: Delayed platelet engraftment was associated with the need for ICU care and peri-transplant infections were associated with a trend toward need for ICU care., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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21. Prognostic Factors and Outcomes of Early-Stage Hodgkin's Lymphoma: Multi-Institutional Data From South India.
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Singuluri LS, Jayachandran PK, Goenka L, Shenoy PK, Rathnam KK, Seshachalam A, Mehra N, Kumar MR, Suseela MM, Raghavan V, Nair CK, Dubashi B, Dhanushkodi M, and Ganesan P
- Abstract
Early-stage Hodgkin's lymphoma (ESHL) is highly curable, usually with a combination of chemotherapy and radiation. Real-world data may show differences in survival and prognostic factors when compared to clinical trials. There is limited published literature on ESHL from India. The data on the baseline characters, treatment, and outcomes of patients with ESHL (stage IA, IB, and IIA) were obtained from five institutions' medical records and entered in a common database. Event-free survival (EFS) and overall survival (OS) were estimated using the Kaplan Meier method, and cox-regression analysis was used to identify prognostic factors. There were 258 patients [median age was 37 (18-75) years; [males:160 (62%); stage I: 41%; B symptoms: 17 (6%); bulky disease:19 (15%)] treated between 2000 and 2020 who were evaluable. The common chemotherapies used were ABVD [N = 180 (70%)], COPP-ABVD hybrid [N = 52 (21%)], and COPP [N = 14 (5%)]. Median number of cycles were 4 (2-8) and 93 (47%) received radiation at end of treatment. After a median follow-up of 60 months, the 5 years EFS was 87% and OS was 92%. On multivariate analysis, the following factors adversely affected the EFS: Male gender [hazard ratio (HR) = 2.23, P = 0.02] and Hemoglobin < 10.5g/dL [hazard ration (HR) = 2.20, P = 0.02], and the following adversely affected the OS: Hemoglobin < 10.5g/dL [hazard ratio (HR) = 4.05, P = 0.001], Male gender [hazard ratio (HR) = 3.59, P = 0.004], Stage 2 [hazard ratio (HR) = 2.65, P = 0.002] and ECOG PS (2-3) [hazard ratio (HR) = 3.35, P = 0.01]. Using the hemoglobin, stage and gender a 3-item prognostic score could identify patients with very good outcomes (score 0; 5 years OS:100%) and poor outcomes (score 3; 5 years OS; 49%). This is one of the first multi-center real-world data exclusively focusing on ESHL from India. Though the survival of the entire population was good, there are subsets of patients who have poor outcomes, which may be identified using simple parameters. These parameters need validation in a larger dataset., Supplementary Information: The online version contains supplementary material available at 10.1007/s12288-023-01692-9., (© The Author(s), under exclusive licence to Indian Society of Hematology and Blood Transfusion 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
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- 2024
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22. Diffuse Large B-Cell Lymphoma with pseudo Rosettes, A Rare Entity: Case Report with Literature Review.
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Vijayakumar G, Narayanan AV, Nayanar SK, and Nair CK
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- Female, Humans, Aged, Rosette Formation, Lymph Nodes pathology, Fluorodeoxyglucose F18, Lymphoma, Large B-Cell, Diffuse pathology, Lymphadenopathy pathology
- Abstract
Background: Rosette formation is an unusual finding in malignant lymphomas. We report a case of a diffuse large B-cell lymphoma (DLBCL) with abundant rosette formation histologically mimicking non lymphoid tumors. Case presentation: A sixty-five-year-old female presented with a complaint of swelling on left side axillary region since a period of six months with no history of fever, fatigue or weight loss or other similar swellings elsewhere. No relevant personal and family history relatable to the present complaint. Subsequent clinical and radiological investigations revealed isolated left axillary lymphadenopathy. The lymph node on further biopsy showed a particular morphology of pseudorosette formation masquerading a metastatic rosette forming malignancies. Subsequent histopathological and immunohistochemical investigations revealed a rare morphological variant of diffuse large B cell lymphoma. The fluorodeoxyglucose positron emission tomography scan showed multiple discreet supra-diphramatic (left lower cervical and left axillary lymph nodes) metabolically active lymph nodes. Conclusion: Diffuse large B cell lymphoma with rosette formation is a rare entity which can mimic other tumors with rosette formation in a metastatic node. Knowledge on the rosette forming lymphoma entity is thus essential for diagnosis and treatment plan. To the best of our knowledge this case report is the sixth known documented case of a diffuse large B cell lymphoma with rosette in literature.
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- 2023
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23. Identification of rare atypical BCR-ABL1 transcript: A case report.
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Saha J, Gopinath V, Nair CK, and Roshan D
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- Humans, Blast Crisis, Real-Time Polymerase Chain Reaction, Genetic Testing, Fusion Proteins, bcr-abl genetics, Leukemia, Myelogenous, Chronic, BCR-ABL Positive diagnosis, Leukemia, Myelogenous, Chronic, BCR-ABL Positive genetics
- Abstract
CML is characterized by the presence of a BCR-ABL1 fusion transcript. Several guidelines have been published for its detection and molecular monitoring. Here, a case is described of chronic myeloid leukemia presenting in the blast phase with a rare variant transcript, with a discussion on possible red flags in its detection and genetic testing and description of the patient's clinical characteristics. This case highlights the pitfalls of using real-time quantitative reverse-transcription polymerase chain reaction (RQ-PCR) for diagnosis of CML, especially when the clinical picture and the test results are discordant., Competing Interests: None
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- 2023
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24. Effects of Revision Surgery and Surgical Margins on Outcome of Peripheral Soft Tissue Sarcomas: Experience from a Tertiary Cancer Care Centre.
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Paul M, Gupta S, Wagh M, Mathew AP, Cherian K, S R, George PS, Augustine P, and Nair CK
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- Humans, Margins of Excision, Neoplasm Recurrence, Local pathology, Reoperation, Retrospective Studies, Treatment Outcome, Sarcoma, Soft Tissue Neoplasms pathology, Soft Tissue Neoplasms surgery
- Abstract
Introduction: The purpose of this study is to assess the impact of revision surgery, after unplanned excision, on oncological outcome and surgical morbidity in soft tissue sarcomas and also to assess the relation between margin status and oncologic outcome., Materials and Methods: We undertook a retrospective analysis of prospectively maintained database of 153 patients with peripheral soft tissue sarcomas treated in our institute from 2006-2010., Results: Postoperatively, 111(72.5%) patients had negative margins, 20(13.1%) had close margins and 22(14.4%) had planned positive margins. Local recurrence rate was 19.8% in patients with negative margins and 28.6% for patients with close or positive margins (p= 0.007). There was no statistically significant difference in rates of distant metastases (18.9% vs 21.4%, p value 0.56) and five-year overall survival (82.5% Vs 79.8%, p value 0.41) between margin negative and close/positive groups. The five-year overall survival rates were 80.4 vs 77.8% (p =0.42) and five-year disease-free survival rates were 72.4% vs 70.2% (p=0.3), in the revision surgery group and primary surgery group respectively., Conclusion: Margin status after excision of soft tissue sarcoma is not a direct predictor for overall survival or distant metastasis. Revision surgery after an unplanned excision does not carry worse survival compared to primary surgery group.
- Published
- 2022
25. Determination of mononuclear cell count using peripheral smear and flow cytometry in peripheral blood stem cell products: A retrospective study from an Indian cancer center.
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Krishnan A, Murugesan M, Therayangalath B, Philip KJ, Nayanar SK, and Nair CK
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Background: Mononuclear cells (MNCs) are considered equivalent to hematopoietic stem cells, and differential count using peripheral smear was routinely practiced to enumerate MNC. Flow cytometry plots used for CD34 enumeration assay can also be used in MNC enumeration as it counts more WBC events than manual methods. The aim was to determine the relationship and degree of agreement between peripheral smear and flow cytometry in MNC enumeration of peripheral blood stem cell (PBSC) products., Methods: In 63 patients, 73 PBSC products were collected between January 2017 and September 2019. The differences in MNC count estimated by peripheral smear method and from flow cytometry plots used for CD34 enumeration were analyzed using Mann-Whitney test. Agreement between the two methods for MNC enumeration was determined by regression analysis. Receiver operating characteristic curve was performed to determine MNC threshold in peripheral blood and PBSC product for adequate mobilization and harvest., Results: There was no difference in enumeration of median MNC count between peripheral smear and flow cytometry (52% vs. 59%, P = 0.185) in PBSC product. However, regression analysis indicated a constant and proportional difference between the methods with r = 0.52. Cumulative sum test for linearity showed deviation from linearity ( P = 0.04). MNC counts in peripheral blood failed to achieve discrimination capacity in predicting adequate CD34+ yield/kg body weight in product., Conclusion: Peripheral smear estimated lower MNC counts than flow cytometry with weaker agreements between the two methods. Hence, MNC count derived from flow cytometry plot can substitute peripheral smear method for MNC dose calculations. MNC dose at 3.4 × 10
8 /kg consistently predicted >2 × 106 /kg CD34+ cells collected., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Asian Journal of Transfusion Science.)- Published
- 2021
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26. Pattern of extranodal involvement and its impact on survival in diffuse large B-cell lymphoma from a tertiary cancer center in rural India.
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Nair CK, Kurup AR, Manuprasad A, Shenoy PK, and Raghavan V
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- Adult, Aged, Aged, 80 and over, Cyclophosphamide administration & dosage, Doxorubicin administration & dosage, Female, Follow-Up Studies, Humans, India, Lymphoma, Large B-Cell, Diffuse drug therapy, Lymphoma, Large B-Cell, Diffuse pathology, Male, Middle Aged, Neoplasm Metastasis, Prednisone administration & dosage, Prognosis, Retrospective Studies, Rituximab administration & dosage, Social Planning, Survival Rate, Tertiary Care Centers, Vincristine administration & dosage, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Lymphoma, Large B-Cell, Diffuse mortality
- Abstract
Introduction: Extranodal (EN) involvement in diffuse large B-cell lymphoma (DLBCL) carries poor prognosis. Both the number and the specific sites of EN involvement are important in predicting prognosis. Given that the epidemiologic pattern of DLBCL in India is different from the rest of the world and such data correlations are scarce from developing countries, we aimed to find out if specific site and number of EN involvement could predict survival in DLBCL., Methods: Patients with DLBCL treated with combination chemotherapy plus rituximab were included. Site and number of EN involvement were noted. Univariate analysis for survival was performed for EN involvement or not, specific site of involvement, and number of EN involvement (0/1 vs. ≥2)., Results: Among a total of 177 patients, 92 (52%) patients had EN disease. When patients with 2 or more EN sites were compared against patients with 0 or 1 site, there was significant reduction in both progression-free survival (PFS) and overall survival (OS) (3-year OS of 55% vs. 79%, P = 0.001, 3-year PFS of 42% vs. 65%, P = 0.001). When specific EN sites were studied for correlation with survival, involvement of skin/soft tissue, and serosa were associated with significant reduction in 3-year OS (33% vs. 74%, P = 0.011, and 63% vs. 75%, P = 0.03, respectively) and 3-year PFS (25% vs. 62%, P < 0.001, and 46% vs. 62%, P = 0.01, respectively)., Conclusion: Two or more EN sites in DLBCL predicted inferior survival. Serosal and skin/soft tissue involvement also predicted poor survival., Competing Interests: None
- Published
- 2021
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27. Recurrent hyperhemolytic transfusion reaction in myelodysplastic syndrome- A case based approach.
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Augustine M, Murugesan M, Nair CK, Raghavan V, and Nayanar SK
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- Adult, Female, Humans, Myelodysplastic Syndromes complications, Transfusion Reaction etiology
- Abstract
We present here a case report of a 27 year old female, with myelodysplatic syndrome suspected to have recurrent hyperhemolytic transfusion reactions (HHTR). Patient was transfusion dependent for ten years and was transfused with leukodepleted and irradiated Packed Red Blood Cells (PRBC). She presented with signs and symptoms of acute intravascular hemolysis, deranged coagulation profile with post transfusion Hb lower than baseline. Post transfusion workup was uneventful. She was managed conservatively with fluid support and methylprednisolone initially. After few uneventful transfusions, patient developed second episode of HHTR with compatible unit.Immunophenotype favored an inflammatory response possibly induced by monocytic lineage. As transfusion dependent, the patient required methylprednisolone as premedication and all subsequent transfusions were uneventful., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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28. Impact of active tuberculosis on treatment decisions in cancer.
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Nair CK, Avaronnan M, Shenoy PK, Raghavan V, Jayarajan P, Rudrapathy P, Duraisamy K, and Balasubramanian S
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- Adolescent, Adult, Aged, Child, Female, Humans, India, Male, Middle Aged, Palliative Care statistics & numerical data, Retrospective Studies, Young Adult, Decision Making, Neoplasms microbiology, Neoplasms therapy, Tuberculosis complications
- Abstract
Background Tuberculosis (TB) and cancer can coexist in some patients especially from low- and middle-income countries. Impact of active TB on treatment decisions in cancer is less well studied. Methods A retrospective case record review of all cases of cancer diagnosed and or treated between January 2012 and December 2019 who were also diagnosed to have active TB (pulmonary or extrapulmonary) was done. Results Any delay or change in standard treatment of cancer because of active TB or its treatment was noted. Among a total of 32,509 cancer cases, 56 (0.17%) patients were diagnosed to have active TB. Twenty six patients (46%) had delay in starting treatment or delay during cancer treatment. Six (11%) patients were changed from curative treatment option to palliative intent (either best supportive care or palliative Radiation) or no further treatment. Three (5%) patients required change from one type of curative treatment modality to another curative option. Conclusion Eleven percent of patients had to be changed from curative intent to palliative treatment or no further treatment, TB being either the direct or indirect cause in all of them. A nationwide data registry of cancer patients with TB, involving multiple centers, should be considered so that specific problems in this context can be identified and addressed in larger details., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2021
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29. Extent of transfusion support in a developing country in managing a bleeding acute myeloid leukemia patient with platelet transfusion refractoriness.
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Chellaiya GK, Nair CK, Raghavan V, Pandian RJ, Vinod R, and Murugesan M
- Abstract
Conventional platelet transfusion may not be adequate to deal with platelet transfusion refractoriness (PTR), and therefore human leukocyte antigen (HLA) or human platelet antigen (HPA) matched and platelet crossmatch compatible units are recommended. However, in developing countries, finding a unit that is HLA or HPA matched or platelet crossmatch poses a challenge. Hence, easier and cost-effective alternatives such as massive platelet transfusion and continuous platelet transfusion were attempted to manage bleeding in PTR. A 31-year-old male presented with acute myeloid leukemia relapse and chloroma in bladder underwent FLAG salvage chemotherapy. Despite almost daily platelet transfusion with single donor platelets (SDPs), patient presented with hematuria and low corrected count increment at 1 h and 24 h suggesting both immune and nonimmune refractoriness to platelet transfusion. The patient received SDP transfusion twice daily from day 19 to day 21 to maintain hemostasis. The patient had persistent hematuria, so massive platelet transfusion in the form of double adult doses of SDP given every 12
th hourly for three events. Despite these measures, there was persistent hematuria and refractoriness to platelet transfusion. As HLA or HPA matched or crossmatch compatible platelets were unavailable, continuous platelet transfusion was started for this patient from day 23 to day 28. After 4 days of continuous platelet transfusion, hematuria subsided. In resource-constrained clinical settings, continuous platelet transfusion can be an effective alternative to HLA/HPA-matched platelets in the management of PTR., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Asian Journal of Transfusion Science.)- Published
- 2021
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30. Infection at diagnosis-a unique challenge in acute myeloid leukemia treatment in developing world.
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Pandian J, Raghavan V, Manuprasad A, Shenoy PK, and Nair CK
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- Adolescent, Adult, Aged, Antineoplastic Combined Chemotherapy Protocols adverse effects, Female, Fever drug therapy, Fever mortality, Humans, India epidemiology, Induction Chemotherapy, Leukemia, Myeloid, Acute diagnosis, Leukemia, Myeloid, Acute drug therapy, Male, Middle Aged, Remission Induction, Retrospective Studies, Survival Rate, Young Adult, Infections mortality, Leukemia, Myeloid, Acute microbiology, Leukemia, Myeloid, Acute mortality
- Abstract
Purpose: A large number of AML patients present with infection at the time of initial presentation in Indian settings. There is lack of published data on the proportion of patients with infection at initial presentation and its impact on induction mortality., Methods: A retrospective audit of patients with newly diagnosed AML more than 14 years of age, who underwent standard induction chemotherapy between the periods of January 2011 to December 2018, was done. Infection at presentation if any was documented. Induction mortality was defined as death happening within 28 days of starting induction chemotherapy., Results: Among a total of 315 cases of AML, 96 (30%) patients underwent induction chemotherapy with 7 + 3 regimen. Documented infection at baseline was present in 30 (31%) of patients. Another 10 patients had fever at the time of presentation but without any documented infection focus. Fifteen patients died within 4 weeks of induction amounting to induction mortality of 15.6%. Induction mortality was 28% among patients with infection at baseline compared with 7% without baseline infections (P = 0.01)., Conclusion: Around 40% of patients had fever at the time of presentation, and 31% had documented infections. Baseline infections led to increase in induction mortality. We would like to propose that infection at baseline is to be considered as one of the potential variables in the predictive scoring system for induction mortality in developing countries.
- Published
- 2020
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31. Leveraging High-Quality Research to Define the Gastric Cancer Landscape in India.
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Merchant SJ, Nair CK, and Booth CM
- Abstract
Competing Interests: Conflict of InterestThe authors declare that they have no conflict of interest.
- Published
- 2020
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32. Impact of early reduction in paraprotein on survival in transplant ineligible myeloma: Lesson from a tertiary cancer center in rural India.
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Nair CK, Raghavan V, Bhattacharjee A, and Kurup AR
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- Adult, Aged, Aged, 80 and over, Female, Humans, India, Male, Middle Aged, Multiple Myeloma blood, Multiple Myeloma drug therapy, Multiple Myeloma pathology, Retrospective Studies, Survival Rate, Tertiary Care Centers, Treatment Outcome, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Biomarkers, Tumor blood, Induction Chemotherapy methods, Multiple Myeloma mortality, Paraproteins analysis
- Abstract
Introduction: The impact of rapid reduction in paraprotein levels, with induction chemotherapy in myeloma, on treatment outcomes is less clear. There are very few studies in transplant ineligible patients treated with novel agents, correlating an early reduction in paraprotein with survival duration., Methods: In this retrospective analysis of newly diagnosed multiple myeloma, ineligible for stem cell transplant, paraprotein levels at baseline and 3 months were noted with percentage reduction. Survival analysis was performed with Kaplan-Meier curves and Cox proportional hazard model., Results: Among a total of 121 patients, 42 (35%), 29 (24%), and 50 (41%) had paraprotein reduction of 100%, 90%-99%, and <90%, respectively from baseline levels at 3 months. Patients with complete disappearance of paraprotein (100% reduction) when compared against those with <100% reduction at 3 months had a trend toward higher overall survival (OS) (3-year OS of 81% vs. 69%, hazard ratio [HR] = 0.54, P = 0.182). However, the progression-free survival (PFS) was significantly higher when these two groups were compared (median PFS of 51 vs. 17 months, HR = 0.33, P ≤ 0.001). When patients with ≥90% reduction were compared with <90% reduction at 3 months, there was significant improvement in both OS and PFS (3-year OS of 80% vs. 48%, HR = 0.24, P = 0.001, median PFS of 38 vs. 14 months, HR = 0.13, P < 0.001)., Conclusions: Achieving a faster and deeper reduction in paraprotein as early as 3 months could lead to significant improvement in PFS., Competing Interests: None
- Published
- 2020
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33. Clinical implementation, logistics and workflow guide for MRI image based interstitial HDR brachytherapy for gynecological cancers.
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Zhang H, Donnelly ED, Strauss JB, Kang Z, Gopalakrishnan M, Lee PC, Khelashvili G, Nair CK, Lee BH, and Sathiaseelan V
- Subjects
- Brachytherapy methods, Female, Humans, Image Processing, Computer-Assisted methods, Organs at Risk radiation effects, Radiotherapy Dosage, Workflow, Brachytherapy instrumentation, Genital Neoplasms, Female radiotherapy, Health Plan Implementation, Magnetic Resonance Imaging methods, Radiotherapy Planning, Computer-Assisted methods, Radiotherapy, Image-Guided methods
- Abstract
Interstitial brachytherapy (IBT) is often utilized to treat women with bulky endometrial or cervical cancers not amendable to intracavitary treatments. A modern trend in IBT is the utilization of magnetic resonance imaging (MRI) with a high dose rate (HDR) afterloader for conformal 3D image-based treatments. The challenging part of this procedure is to properly complete many sequenced and co-related physics preparations. We presented the physics preparations and clinical workflow required for implementing MRI-based HDR IBT (MRI-HDR-IBT) of gynecologic cancer patients in a high-volume brachytherapy center. The present document is designed to focus on the clinical steps required from a physicist's standpoint. Those steps include: (a) testing IBT equipment with MRI scanner, (b) preparation of templates and catheters, (c) preparation of MRI line markers, (d) acquisition, importation and registration of MRI images, (e) development of treatment plans and (f) treatment evaluation and documentation. The checklists of imaging acquisition, registration and plan development are also presented. Based on the TG-100 recommendations, a workflow chart, a fault tree analysis and an error-solution table listing the speculated errors and solutions of each step are provided. Our workflow and practice indicated the MRI-HDR-IBT is achievable in most radiation oncology clinics if the following equipment is available: MRI scanner, CT (computed tomography) scanner, MRI/CT compatible templates and applicators, MRI line markers, HDR afterloader and a brachytherapy treatment planning system capable of utilizing MRI images. The OR/procedure room availability and anesthesiology support are also important. The techniques and approaches adopted from the GEC-ESTRO (Groupe Européen de Curiethérapie - European Society for Therapeutic Radiology and Oncology) recommendations and other publications are proven to be feasible. The MRI-HDR-IBT program can be developed over time and progressively validated through clinical experience, this document is expected to serve as a reference workflow guideline for implementing and performing the procedure., (© 2019 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine.)
- Published
- 2019
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34. Limiting factors for autologous transplantation among transplant-eligible multiple myeloma patients: Lesson from a Tertiary Cancer Centre in rural India.
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Nair CK, Selvaraj K, Raghavan V, A M, Shenoy PK, Kurup AR, Duraisamy K, Shringarpure K, and Venugopal V
- Subjects
- Adult, Aged, Autografts, Disease-Free Survival, Female, Humans, India epidemiology, Male, Middle Aged, Retrospective Studies, Survival Rate, Multiple Myeloma mortality, Multiple Myeloma therapy, Rural Population, Tertiary Care Centers
- Abstract
There is limited data from low and middle income countries on the exact proportion of Myeloma patients undergoing transplant even if they are eligible for the same. In this retrospective analysis of all newly diagnosed transplant eligible Myeloma treated between January 2011 to June 2017, number of patients undergoing transplant were recorded and among those not opting for transplant, reasons for the same were noted. Among 89 eligible patients, 23 (26%) patients could undergo transplantation. Most common reasons for not undergoing transplant were fear of the complications in 42 (47%) and financial reasons in 41 (46%) of patients. The transplanted group had better progression free survival when compared against the non-transplanted group (3 year PFS of 80% versus 36%, HR = 0.09, 95%CI 0.02-0.4, p = 0.001). Future studies may be conducted to arrive at measures, for correcting the transplant related concerns and fears, through psycho-social interventions., (Copyright © 2019 Elsevier Ltd. All rights reserved.)
- Published
- 2019
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35. Clinical and equipment-related factors associated with the adequate peripheral blood stem cell collection in autologous transplant at a tertiary cancer center in Kerala - A retrospective cohort study.
- Author
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Murugesan M, Shringarpure K, Karthickeyan DSA, Nair CK, Nayanar SK, Venugopal V, Selvaraj K, Rathi P, Mehta KG, Deenathayalan V, and Gayathiri KC
- Subjects
- Adult, Autografts, Female, Humans, India, Male, Middle Aged, Retrospective Studies, Blood Component Removal instrumentation, Cancer Care Facilities, Neoplasms therapy, Peripheral Blood Stem Cell Transplantation, Peripheral Blood Stem Cells, Tertiary Care Centers
- Abstract
Background: PBSC collection using apheresis is the preferred source of hematopoietic stem cells transplantation. However, apheresis procedures fail to harvest adequate CD34 yield in 5 to 40% of patients during the first collection. Therefore, this study aimed to study both the clinical- and equipmentrelated factors influencing CD34 yield among the autologous patients and to compare the collection efficiency of two apheresis equipments(Haemonetics MCS+ and Terumo Spectra Optia)., Methods: Retrospective analysis of 69 patients underwent PBSC collection from 2015 to 2018. Frequency, clinical- and equipment-related factors responsible for adequate CD34+ cells (≥2 x106 cells/kg) yield during the first collection was studied. Factors such as collection efficiency, percentage platelet loss and percentage hemoglobin loss were considered to compare the two apheresis system., Results: Two-third (72%) patients of the study population had adequate CD34 stem cells yield during the first collection. Factors such as exposure to lenalidomide-based pretreatment regimen, peripheral blood WBC count and CD34 count are associated with the adequate CD34 yield. Optia had a slightly better collection efficiency than MCS+ (50 and 44; p=0.37). Optia had lower product volume (237 vs 298 ml) and lesser procedure duration (277 vs 360 min), whereas the median Hb loss (3.0% and 2.3%) and mean platelet loss (49% and 34%) were higher with MCS., Conclusion: This study infers that the collection efficiency of both the equipments in collecting CD34 stem cells was similar. However, during PBSC collection, procedures using Optia can be preferred to MCS+ on the patients with risk of anemia and thrombocytopenia., (Copyright © 2019. Published by Elsevier Ltd.)
- Published
- 2019
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36. Linear Accelerator-Based Radiotherapy Simulation Using On-Board Kilovoltage Cone-Beam Computed Tomography for 3-Dimensional Volumetric Planning and Rapid Treatment in the Palliative Setting.
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Dyer BA, Nair CK, Deardorff CE, Wright CL, Perks JR, and Rao SS
- Subjects
- Head and Neck Neoplasms pathology, Humans, Image Processing, Computer-Assisted, Particle Accelerators, Patient Positioning, Phantoms, Imaging, Radiotherapy Dosage, Software, Tomography, X-Ray Computed, Cone-Beam Computed Tomography, Head and Neck Neoplasms radiotherapy, Radiotherapy Planning, Computer-Assisted, Radiotherapy, Conformal
- Abstract
Background: Palliation of advanced disease using radiotherapy can create difficult clinical situations where standard computed tomography simulation and immobilization techniques are not feasible. We developed a linear accelerator-based radiotherapy simulation technique using nonstandard patient positioning for head and neck palliation using on-board kilovoltage cone-beam computed tomography for 3-D volumetric planning and rapid treatment. Material and Methods: We proved cone-beam computed tomography simulation feasibility for semi-upright patient positioning using an anthropomorphic phantom on a clinical Elekta-Synergy linear accelerator. Cone-beam computed tomography imaging parameters were optimized for high-resolution image reconstruction and to ensure mechanical clearance. The patient was simulated using a cone-beam computed tomography-based approach and the cone-beam computed tomography digital imaging and communications in medicine file was imported to the treatment planning software to generate radiotherapy target volumes. Rapid planning was achieved by using a 3-level bulk density correction for air, soft tissue, and bone set at 0, 1.0, and 1.4 g/cm
3 , respectively., Results: Patient volumetric imaging was obtained through cone-beam computed tomography simulation and treatment was delivered as planned without incident. Bulk density corrections were verified against conventionally simulated patients where differences were less than 1%. Conclusion: We successfully developed and employed a semi-upright kilovoltage cone-beam computed tomography-based head and neck simulation and treatment planning method for 3-D conformal radiotherapy delivery. This approach provides 3-D documentation of the radiotherapy plan and allows tabulation of quantitative spatial dose information which is valuable if additional palliative treatments are needed in the future. This is a potentially valuable technique that has broad clinical applicability for benign and palliative treatments across multiple disease sites-particularly where standard supine simulation and immobilization techniques are not possible.- Published
- 2019
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37. Flow cytometric enumeration of CD34+ hematopoietic stem cells: A comparison between single- versus dual-platform methodology using the International Society of Hematotherapy and Graft Engineering protocol.
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Murugesan M, Nair CK, Nayanar SK, and Pentapati KC
- Abstract
Background: Flow cytometric enumeration of CD34+ hematopoietic stem cells (HSC) is the reference point for undertaking apheresis and evaluation of adequacy for peripheral blood stem cell (PBSC) engraftment., Aims: To determine whether single platform correlates with dual platform methods in CD34+ enumeration using ISHAGE protocol., Methods: Retrospective analysis of CD34 Enumeration assays on both peripheral blood and PBSC product samples using Beckman Coulter FC500 Flow Cytometer. The t test and correlation study was used to study the difference between single and dual platform methods in CD34+ enumeration., Results: We present our data on 152 samples comprising 41 peripheral blood samples collected before apheresis procedure and 111 samples collected from PBSC product. We observed strong positive correlation between single and dual platform methods for CD34+ counts in peripheral blood sample ( r = 0.92; P < 0.001) and PBSC product sample ( r = 0.85; P < 0.001)., Conclusion: In our study, both single versus dual platform had similar results in CD34+ cell counts. The single platform provides rapid results with ease of procedure. Errors with dual platforms are relatively common with respect to denominator. We recommend to use mean of total leukocyte count from two different hematology analyzer to minimize variation in dual platform., Competing Interests: There are no conflicts of interest.
- Published
- 2019
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38. An esthetic modification of a nasal conformer.
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Aswal GS, Mohanram SK, Nair CK, Gurumurthy V, and Rawat R
- Subjects
- Child, Esthetics, Female, Humans, Nasal Obstruction etiology, Burns complications, Contracture complications, Nasal Obstruction therapy, Nose Deformities, Acquired therapy, Prostheses and Implants
- Abstract
Facial contractures caused by burns can collapse the nasal aperture and lead to airway obstruction. Management in such situations requires surgical and prosthetic intervention. Prosthetically, although a nasal conformer is the treatment of choice, even a well-fabricated nasal conformer may be esthetically unappealing and require an aid for enhanced retention. Expensive implant-aided conformers are not always a viable option. This article introduces a technique for fabricating a nasal conformer that is both esthetically appealing and cost-effective. The technique is illustrated by the treatment of a 12-year-old girl who presented with a history of burn injuries leading to nasal contracture that was effectively managed with this concept., (Copyright © 2018 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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39. Tumor control by hypoxia-specific chemotargeting of iron-oxide nanoparticle - Berberine complexes in a mouse model.
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Sreeja S and Krishnan Nair CK
- Subjects
- Animals, Antineoplastic Agents, Phytogenic administration & dosage, Antineoplastic Agents, Phytogenic chemistry, Antioxidants metabolism, Berberine administration & dosage, Berberine chemistry, Biomarkers, Tumor, DNA, Neoplasm biosynthesis, DNA, Neoplasm drug effects, Female, Ferric Compounds administration & dosage, Ferric Compounds chemistry, Gene Expression Regulation, Neoplastic drug effects, Mice, Neoplasms, Experimental drug therapy, Neoplasms, Experimental pathology, Neoplasms, Experimental therapy, Particle Size, Spectroscopy, Fourier Transform Infrared, Survival Analysis, X-Ray Diffraction, Antineoplastic Agents, Phytogenic therapeutic use, Berberine therapeutic use, Drug Delivery Systems methods, Ferric Compounds therapeutic use, Hypoxia, Nanoparticles
- Abstract
Aim: To evaluate the therapeutic efficacy of hypoxic cell-sensitizer Sanazole (SAN) -directed targeting of cytotoxic drug Berberine (BBN) and Iron-oxide nanoparticle (NP) complexes, to solid tumor in Swiss albino mice., Main Methods: NP-BBN-SAN complexes were characterized by FTIR, XRD, TEM and Nano-size analyzer. This complex was orally administered to mice-bearing solid tumor in hind limb. Tumor regression was analysed by measuring tumor volume. Cellular DNA damages were assessed by comet assay. Transcriptional expression of genes related to tumor hypoxia and apoptosis was evaluated by quantitative real-time PCR and morphological changes in tissues were analysed by histopathology. Also levels of antioxidants and tumor markers in tissues and serum biochemical parameters were analysed., Key Findings: Administration of NP-BBN-SAN complexes reduced tumor volume and studies were focussed on the underlying mechanisms. Extensive damage to cellular-DNA; down-regulated transcription of hif-1α, vegf, akt and bcl2; and up-regulated expression of bax and caspases, were observed in tumor. Results on tumor markers, antioxidant-status and serum parameters corroborated the molecular findings. Histopathology of tumor, liver and kidney revealed the therapeutic specificity of NP-BBN-SAN., Significance: Thus SAN and NP can be used for specific targeting of drugs, to hypoxic solid tumor, to improve therapeutic efficacy., (Copyright © 2017. Published by Elsevier Inc.)
- Published
- 2018
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40. Converting Treatment Plans From Helical Tomotherapy to L-Shape Linac: Clinical Workflow and Dosimetric Evaluation.
- Author
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Yuan Z, Nair CK, Benedict SH, Valicenti RK, Rao S, Fragoso RC, Wright C, Qiu J, and Rong Y
- Subjects
- Brain pathology, Humans, Male, Neoplasms pathology, Organs at Risk, Prostate pathology, Radiometry, Radiotherapy Dosage, Radiotherapy, Conformal adverse effects, Tomography, Spiral Computed methods, Workflow, Brain radiation effects, Neoplasms radiotherapy, Prostate radiation effects, Radiotherapy Planning, Computer-Assisted methods, Radiotherapy, Intensity-Modulated adverse effects
- Abstract
This work evaluated a commercial fallback planning workflow designed to provide cross-platform treatment planning and delivery. A total of 27 helical tomotherapy intensity-modulated radiotherapy plans covering 4 anatomical sites were selected, including 7 brain, 5 unilateral head and neck, 5 bilateral head and neck, 5 pelvis, and 5 prostate cases. All helical tomotherapy plans were converted to 7-field/9-field intensity-modulated radiotherapy and volumetric-modulated radiotherapy plans through fallback dose-mimicking algorithm using a 6-MV beam model. The planning target volume (PTV) coverage ( D
1 , D99 , and homogeneity index) and organs at risk dose constraints were evaluated and compared. Overall, all 3 techniques resulted in relatively inferior target dose coverage compared to helical tomotherapy plans, with higher homogeneity index and maximum dose. The organs at risk dose ratio of fallback to helical tomotherapy plans covered a wide spectrum, from 0.87 to 1.11 on average for all sites, with fallback plans being superior for brain, pelvis, and prostate sites. The quality of fallback plans depends on the delivery technique, field numbers, and angles, as well as user selection of structures for organs at risk. In actual clinical scenario, fallback plans would typically be needed for 1 to 5 fractions of a treatment course in the event of machine breakdown. Our results suggested that <1% dose variance can be introduced in target coverage and/or organs at risk from fallback plans. The presented clinical workflow showed that the fallback plan generation typically takes 10 to 20 minutes per case. Fallback planning provides an expeditious and effective strategy for transferring patients cross platforms, and minimizing the untold risk of a patient missing treatment(s).- Published
- 2018
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41. Lung cancer: Presentation and pattern of care in a cancer center in South India.
- Author
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Nair CK, Mathew AP, and George PS
- Subjects
- Disease Management, Humans, India epidemiology, Lung Neoplasms pathology, Male, Medical Records, Cancer Care Facilities trends, Lung Neoplasms epidemiology, Lung Neoplasms therapy
- Abstract
Background: In India lung cancer is the most commonly diagnosed malignancy in males and an increasing trend in the incidence is reported from the National Cancer Registry programme., Aims: The aim of this study is to find out the recent trends in presentation and management of lung cancer at Regional Cancer Centre, Trivandrum., Methods: Published reports of hospital based cancer registries (HBCR) and population based cancer registries (PBCR) of Trivandrum were compared with reported statistics from other parts of India and global data., Results: Lung is the leading site of cancer in males (15%) getting treatment at Regional Cancer Centre , Trivandrum in 2013 as per the HBCR. There is an increase in the age adjusted incidence rate of lung cancer among males in the Trivandrum PBCR from 14.6 to 18.5 during 2012 -2014. Among the patients who were treated at the Center majority (55.2%) presented with distant metastases with adenocarcinoma as the most common histological type (28.5%) and only 15.7% had undergone treatment with curative intent., Conclusions: Lung cancer is the major cancer affecting males in India with a high incidence in Trivandrum and a very low percentage of patients receiving curative treatment which could be due to the high prevalence of tuberculosis and scarce availability of facilities and trained manpower for thoracic oncology.
- Published
- 2017
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42. Protective effect of ayurvedic formulations against doxorubicin-induced cardiotoxicity: Preliminary studies on Brahma Rasayana and Chyavanaprash.
- Author
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AlSuhailbani E, Menon A, and Nair CK
- Subjects
- Animals, Antioxidants metabolism, Cardiotoxicity prevention & control, Lipid Peroxidation drug effects, Male, Mice, Myocardium pathology, Doxorubicin toxicity, Medicine, Ayurvedic, Plant Extracts pharmacology, Plant Preparations pharmacology
- Abstract
Aim of Study: The present work aimed to examine the efficacy of two ayurvedic formulations, Brahma Rasayana (BRM) and Chyavanaprash (CHM) to alleviate doxorubicin (DOX) induced acute cardiotoxicity., Materials and Methods: Swiss albino mice were administered with DOX (25 mg/kg, i.p.) and two doses of BRM or CHM (1 and 2 g/kg). Cardiotoxicity was assessed by measuring the levels of various antioxidant parameters in the heart as well as release of marker enzymes in the serum was assayed. Histology of the heart was also performed to check for DOX-induced damages., Results: Administration of either BRM or CHM (1 and 2 g/kg) maintained the antioxidant status in the heart thereby preventing tissue damage as well as the release of marker enzymes. DOX-induced variation of cardiac architecture was also prevented by BRM and CHM administration., Conclusion: BRM and CHM administration could prevent DOX-induced acute cardiotoxicity.
- Published
- 2016
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43. Impact of thrombosis on standard treatment in solid tumors.
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Nair CK, Bhattacharjee A, Raghavan V, Babu S, and Balasubramanian S
- Subjects
- Adult, Aged, Commission on Professional and Hospital Activities, Female, Humans, Male, Middle Aged, Retrospective Studies, Thrombosis drug therapy, Neoplasms drug therapy, Thrombosis etiology
- Abstract
Introduction: Malignancy leading to a hypercoagulable state is a well established concept. The reported frequency of venous thrombotic events in cancer patients is 5-8%. There is limited data on the influence of thrombosis on treatment decisions in solid tumors., Methods: A retrospective audit of all cases of thrombosis developing in newly diagnosed solid tumors from 1st January 2011 to 31st December 2014 was performed. Changes in treatment decisions for malignancy (deferral of surgery/chemotherapy, changes in the planned course of chemotherapy or changes in the planned dates of chemotherapy) after the documentation of thrombosis were noted., Results: A total of 11,796 solid tumor cases were registered. 61 patients with thrombosis (0.52%) were identified. In 14 patients(23%), treatment decisions for malignancy had to be changed after the occurrence of thrombosis. 2 patients were deferred surgery, 9 could not undergo chemotherapy according to planned schedules, and 3 were deferred chemotherapy. In survival analysis by multivariate model, stage (p=0.01) and ECOG performance status (p=0.01) significantly predicted survival whereas thrombus location (p=0.09), symptomatic thrombosis (p=0.06), and age (p=0.19) did not., Conclusions: Frequency of thrombosis in solid tumors in our centre was less compared to previous reports. There was a significant deviation (nearly one fourth patients) from standard of treatment for malignancy after the development of thrombosis. Survival of patients who developed thrombosis did not significantly vary depending on location of thrombosis or whether it is symptomatic or not., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- Published
- 2015
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44. Anticancer Property of Iron Oxide Nanoparticle-Drug Complexes: An In Vitro Study.
- Author
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Sreeja S and Nair CK
- Subjects
- Animals, Cell Line, Tumor, Comet Assay, DNA Damage drug effects, Drug Screening Assays, Antitumor, Gene Expression Regulation, Neoplastic drug effects, Mice, Antineoplastic Agents pharmacology, Apoptosis drug effects, Berberine pharmacology, Ferric Compounds pharmacology, Metal Nanoparticles, Triazoles pharmacology
- Abstract
Tumor-specific targeting of chemotherapeutic drugs can increase the therapeutic efficacy of most anticancer drugs. On surface-modified iron oxide nanoparticles (NPs), we complexed a hypoxic cell-targeting agent, sanazole (SAN), and a cytotoxic isoquinoline alkaloid, berberine (BBN). The major objective of this study was to elucidate the molecular mechanism of cytotoxicity in murine tumor cells (DLA) induced by NP-BBN-SAN complexes. The cytotoxicity of these complexes was determined using the dye exclusion method. The induction of apoptosis and cellular DNA damage in these cells was analyzed using dual staining and comet assay, respectively. The expression of genes in the treated cells elucidated the molecular mechanism underlying cytotoxicity. Cells treated with NP-BBN-SAN complexes showed significant increases in cytotoxicity and apoptosis, as well as extensive damage to cellular DNA compared to control cells. The cells treated with NP-BBN-SAN complexes showed greater DNA damage compared with other treatments. The increase in the expression of a pro-apoptotic gene suggested that apoptosis was the mechanism underlying cytotoxicity induced by NP-BBN-SAN complexes. Complexing with SAN increased the cytotoxic potential of NP-BBN complexes. Further in vivo studies are needed to evaluate the potential application of this method in controlling tumors.
- Published
- 2015
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45. Protection of DNA From Ionizing Radiation-Induced Lesions by Asiaticoside.
- Author
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Joy J, Alarifi S, Alsuhaibani E, and Nair CK
- Subjects
- Animals, Bone Marrow Cells drug effects, Bone Marrow Cells radiation effects, Cell Line, Comet Assay, DNA Damage radiation effects, Dose-Response Relationship, Radiation, Humans, Leukocytes, Mononuclear pathology, Leukocytes, Mononuclear radiation effects, Male, Mice, Molecular Structure, Plasmids drug effects, Plasmids radiation effects, Radiation Injuries, Experimental genetics, Radiation-Protective Agents chemistry, Radiation-Protective Agents therapeutic use, Spleen cytology, Spleen drug effects, Spleen radiation effects, Triterpenes chemistry, Triterpenes therapeutic use, Whole-Body Irradiation, DNA Damage drug effects, Gamma Rays adverse effects, Leukocytes, Mononuclear drug effects, Radiation Injuries, Experimental prevention & control, Radiation-Protective Agents pharmacology, Triterpenes pharmacology
- Abstract
This study aims to investigate whether asiaticoside, a triterpene glycoside, can afford protection to DNA from alterations induced by gamma radiation under in vitro, ex vivo, and in vivo conditions. In vitro studies were done on plasmid pBR322 DNA, ex vivo studies were done on cellular DNA of human peripheral blood leukocytes, and in vivo investigations were conducted on cellular DNA of spleen and bone marrow cells of mice exposed to whole-body gamma radiation. The supercoiled form of the plasmid pBR322 DNA upon exposure to the radiation was converted into relaxed open circular form due to induction of strand breaks. Presence of asiaticoside along with the DNA during irradiation prevented the relaxation of the supercoiled form to the open circular form. When human peripheral blood leukocytes were exposed to gamma radiation, the cellular DNA suffered strand breaks as evidenced by the increased comet parameters in an alkaline comet assay. Asiaticoside, when present along with blood during irradiation ex vivo, prevented the strand breaks and the comet parameters were closer to that of the controls. Whole-body exposure of mice to gamma radiation resulted in a significant increase in comet parameters of DNA of bone marrow and spleen cells of mice as a result of radiation-induced strand breaks in DNA. Administration of asiaticoside prior to whole-body radiation exposure of the mice prevented this increase in radiation-induced increase in comet parameters, which could be the result of protection to DNA under in vivo conditions of radiation exposure. Thus, it can be concluded from the results that asiaticoside can offer protection to DNA from radiation-induced alterations under in vitro, ex vivo, and in vivo conditions.
- Published
- 2015
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46. Factors affecting health related quality of life of rectal cancer patients undergoing surgery.
- Author
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Nair CK, George PS, Rethnamma KS, Bhargavan R, Abdul Rahman S, Mathew AP, Muralee M, Cherian K, Augustine P, and Ahamed MI
- Abstract
Maintaining quality of life (QOL) is one of the important aims of cancer treatment. Quality of life of a cancer patient is affected by various factors, which may be disease related, patient related, or treatment related. To study changes in health-related quality of life (HRQOL) brought about by treatment of rectal cancer and factors affecting the changes using Malayalam translation of FACT-C (Functional Assessment of Cancer Therapy-Colorectal) Questionnaire. Also to detect the minimally important clinical changes (MICC) in health-related quality of life of patients with carcinoma rectum, who have undergone surgery. Forty-five patients diagnosed with carcinoma rectum, who have undergone curative surgery, were studied. HRQOL was assessed at baseline 2 weeks after surgery and 3 months after surgery. The changes in scores were correlated with various demographic factors like age, sex, marital status, number of children, number of married children, and education and occupation of the patient and spouse. Also the treatment-related factors like presence of stoma, presence of morbidity, previous treatment, stage of disease, and administration of chemotherapy before and after surgery were correlated. All the subscales of FACT-C tool, except emotional well-being, were significantly reduced 2 weeks after surgery and increased slightly above pre-treatment level 3 months after surgery. The Chronbach α values were 0.88, 0.89 and 0.86 on three occasions, respectively, establishing internal validity of the test. Baseline HRQOL scores were better in males compared to females. Among the various subscales, the drops in SWB, FWB, FACT-G, total Score and TOI were significant (P < .05).There were no significant differences in scores between patients who have undergone open surgery and minimally invasive surgery or patients who had permanent colostomy versus no colostomy. The HRQOL scores after surgery reduced 2 weeks after surgery and improved above pre-surgical levels 3 months after surgery. The approach of surgery (minimally invasive versus open) or presence or absence of permanent colostomy didn't make any significant change in HRQOL. But since the sample size of the study was small, we need further larger studies to arrive at definite conclusions.
- Published
- 2014
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47. Sanazole directed targeting of silver nanoparticle drug complex to tumor mass: a preclinical investigation in murine model.
- Author
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Nair GG and Nair CK
- Subjects
- Animals, Antineoplastic Agents chemistry, Apoptosis, Ascites, Colloids chemistry, DNA Damage, Disease Models, Animal, Doxorubicin administration & dosage, Drug Delivery Systems, Drug Screening Assays, Antitumor, Lymphoma drug therapy, Mice, Nanomedicine, Radiation-Sensitizing Agents administration & dosage, Metal Nanoparticles chemistry, Neoplasms drug therapy, Silver chemistry, Triazoles chemistry
- Abstract
Aim of Study: To explore sanazole (AK) directed targeting of the antineoplastic drug doxorubicin (DOX) complexed with silver nanoparticles (SNs) to tumor growth in a murine model., Materials and Methods: Sanazole (AK) and DOX were complexed with SNs, individually and in combination to obtain SN-AK, SN-DOX, and SN-AK-DOX. Solid tumors were developed on hind limbs of Swiss albino mice by transplanting Dalton's lymphoma ascitess (DLAs) tumor cells. Induction of cytotoxicity and apoptosis in the DLA cells by AK and DOX complexed with SN, individually and in combination, were examined under in vitro conditions by incubating the cells with them. SN, AK, DOX, SN-AK, SN-DOX, AK-DOX, and SN-AK-DOX were administered orally to the tumor bearing mice and the therapeutic efficacy of AK-directed targeting of SN-DOX complexes to achieve tumor control was monitored., Results: Under in vitro conditions, SN, AK, DOX, SN-AK, SN-DOX, AK-DOX, and SN-AK-DOX induced cytotoxicity and apoptosis in DLA cells to varying extents. The SN-AK-DOX complex showed higher level of cytotoxicity and apoptosis-induction in DLA cells. Similarly, administration of SN, AK, DOX, SN-AK, SN-DOX, AK-DOX, and SN-AK-DOX resulted in significant reduction in tumor volume and delay in tumor growth. The animals treated with SN-AK-DOX had the highest reduction in tumor volume and tumor growth. In fact, the tumor was almost absent in the animals of this group after the treatment., Conclusion: The SN complex of sanazole and doxorubicin together (SN-AK-DOX) has high anticancer activity under in vivo conditions and has great potential in tumor therapy.
- Published
- 2014
- Full Text
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48. Co-existence of acute myeloid leukemia infiltration and extramedullary hematopoiesis in appendix.
- Author
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Vasudevan JA, Nair RA, Prem S, and Nair CK
- Subjects
- Adult, Anemia, Antibiotics, Antineoplastic therapeutic use, Antimetabolites, Antineoplastic therapeutic use, Appendectomy, Cytarabine therapeutic use, Daunorubicin therapeutic use, Humans, Induction Chemotherapy, Male, Appendix pathology, Appendix surgery, Hematopoiesis, Extramedullary, Leukemia, Myeloid, Acute drug therapy
- Published
- 2014
- Full Text
- View/download PDF
49. Fungal beta glucan protects radiation induced DNA damage in human lymphocytes.
- Author
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Pillai TG, Maurya DK, Salvi VP, Janardhanan KK, and Nair CK
- Abstract
Background: Ganoderma lucidum (Ling Zhi), a basidiomycete white rot macrofungus has been used extensively for therapeutic use in China, Japan, Korea and other Asian countries for 2,000 years. The present study is an attempt to investigate its DNA protecting property in human lymphocytes., Materials and Methods: Beta glucan (BG) was isolated by standard procedure and the structure and composition were studied by infrared radiation (IR) and nuclear magnetic resonance (NMR) spectroscopy, gel filtration chromatography and paper chromatography. The radioprotective properties of BG isolated from the macro fungi Ganoderma lucidum was assessed by single cell gel electrophoresis (comet assay). Human lymphocytes were exposed to 0, 1, 2 and 4 Gy gamma radiation in the presence and absence of BG., Results: The comet parameters were reduced by BG. The results indicate that the BG of G. lucidum possessed significant radioprotective activity with DNA repairing ability and antioxidant activity as the suggestive mechanism., Conclusions: The findings suggest the potential use of this mushroom for the prevention of radiation induced cellular damages.
- Published
- 2014
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50. Amelioration of doxorubicin induced cardio-and hepato-toxicity by carotenoids.
- Author
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Indu R, Azhar TS, Nair A, and Nair CK
- Subjects
- Animals, Antibiotics, Antineoplastic administration & dosage, Biomarkers metabolism, Chemical and Drug Induced Liver Injury metabolism, Disease Models, Animal, Doxorubicin administration & dosage, Liver metabolism, Liver pathology, Male, Mice, Myocardium metabolism, Myocardium pathology, Neoplasms complications, Neoplasms drug therapy, Oxidative Stress drug effects, Antibiotics, Antineoplastic adverse effects, Antioxidants pharmacology, Carotenoids pharmacology, Doxorubicin adverse effects, Heart drug effects, Liver drug effects
- Abstract
Aim of Study: The aim of this study is to explore the ability of the carotenoids (CARs) to offer protection against acute cardiotoxicity and hepatotoxicity induced by doxorubicin (DOX) (25 mg/kg) in tumor bearing Swiss albino mice., Materials and Methods: Tumor bearing Swiss albino mice administered with DOX (25 mg/kg, i.p) and two doses of CARs (50 and 100 μg/kg). 24 h after administration of the drugs, histopathological evaluation of tumor, liver and heart tissues carried out. Furthermore, various antioxidant parameters in these tissues were investigated. Serum marker enzymes for tissue injury were examined., Results: Administration of CARs prevented the depletion of antioxidants in the heart and liver, thereby protecting the tissue damage and release of marker enzymes. However, similar antioxidant depletion was not observed in the tumor tissue. CARs prevented DOX induced variation in tissue architecture in heart and liver tissues. However, CARs did not influence DOX induced alterations in the tumor., Conclusion: Administration of CARs could prevent DOX induced acute toxicity to heart and liver.
- Published
- 2014
- Full Text
- View/download PDF
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