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Boynton D, Noyes SL, Murali A, Peabody H, Krumm A, Singh K, Lane BR. Simplified cardiovascular index may be the best comorbidity index for clinical use in prediction of mortality for renal cancer patients. Urol Oncol 2024; 42:72.e1-72.e8. [PMID: 38242826 DOI: 10.1016/j.urolonc.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/01/2023] [Accepted: 01/05/2024] [Indexed: 01/21/2024]
Abstract
OBJECTIVE Understanding the relationship between comorbidities and life expectancy is important in cancer patients who carry risks of cancer and noncancer-related mortality. Comorbidity indices (CI) are tools to provide an objective measure of competing risks of death. We sought to determine which CI might be best incorporated into clinical practice for patients with suspected renal cancer. MATERIALS AND METHODS 1572 patients diagnosed with renal masses (stage I-IV) between 1998 and 2016 were analyzed for this study. Patient data were gathered from a community-based health center. Comorbidities were evaluated individually, and with 1 of 4 CI: Charlson (CCI), updated CCI (uCCI), age-adjusted CCI (aCCI), and simplified cardiovascular index (CVI). Cox-proportional hazard analysis of all-cause mortality was performed using the four CI, adjusting for the 4 CI, adjusting for age, gender, race, tumor size, and tumor stage. RESULTS Univariable analyses revealed the four CI were significant predictors of mortality (P < 0.05), as were age, gender, tumor size, and stage. Comorbid conditions at diagnosis included hypertension (47.8%), diabetes mellitus (47.2%), coronary artery disease (41.1%), chronic kidney disease (31.8%), peripheral vascular disease (8.0%), congestive heart failure (5.7%), chronic obstructive pulmonary disease (5.7%), and cerebrovascular disease (2.0%). When analyzing the 4 CI in multivariable survival analyses accounting for factors available at diagnosis, and analyses incorporating pathologic and recurrence data, only CVI score and uCCI remained statistically significant (P < 0.05). Limitations of this work are the retrospective nature of data collection and data from a single institution, limiting the generalizability. CONCLUSION Increasing comorbidity, age, tumor size, and cM stage are predictors of ACM for suspected renal cancer patients. CVI appears to provide comparable information to various iterations of CCI (uCCI, aCCI) while being the simplest to use. Utilization of CVI may assist clinicians and patients when considering between interventional and noninterventional approaches for suspected renal cancer.
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Affiliation(s)
- Dennis Boynton
- Department of Surgery, Michigan State University College of Human Medicine, Grand Rapids, MI
| | | | - Adharsh Murali
- Department of Urology, University of Michigan Medical School, Ann Arbor, MI
| | - Henry Peabody
- Division of Urology, Corewell Health West, Grand Rapids, MI
| | - Andrew Krumm
- Department of Learning Health Sciences, University of Michigan Medical School, Ann Arbor, MI
| | - Karandeep Singh
- Department of Urology, University of Michigan Medical School, Ann Arbor, MI; Department of Learning Health Sciences, University of Michigan Medical School, Ann Arbor, MI
| | - Brian R Lane
- Department of Surgery, Michigan State University College of Human Medicine, Grand Rapids, MI; Division of Urology, Corewell Health West, Grand Rapids, MI.
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Undamatla R, Fagunloye OG, Chen J, Edmunds LR, Murali A, Mills A, Xie B, Pangburn MM, Sipula I, Gibson G, St Croix C, Jurczak MJ. Reduced mitophagy is an early feature of NAFLD and liver-specific PARKIN knockout hastens the onset of steatosis, inflammation and fibrosis. Sci Rep 2023; 13:7575. [PMID: 37165006 PMCID: PMC10172344 DOI: 10.1038/s41598-023-34710-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/05/2023] [Indexed: 05/12/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) encompasses a spectrum of pathologies that includes steatosis, steatohepatitis (NASH) and fibrosis and is strongly associated with insulin resistance and type 2 diabetes. Changes in mitochondrial function are implicated in the pathogenesis of NAFLD, particularly in the transition from steatosis to NASH. Mitophagy is a mitochondrial quality control mechanism that allows for the selective removal of damaged mitochondria from the cell via the autophagy pathway. While past work demonstrated a negative association between liver fat content and rates of mitophagy, when changes in mitophagy occur during the pathogenesis of NAFLD and whether such changes contribute to the primary endpoints associated with the disease are currently poorly defined. We therefore undertook the studies described here to establish when alterations in mitophagy occur during the pathogenesis of NAFLD, as well as to determine the effects of genetic inhibition of mitophagy via conditional deletion of a key mitophagy regulator, PARKIN, on the development of steatosis, insulin resistance, inflammation and fibrosis. We find that loss of mitophagy occurs early in the pathogenesis of NAFLD and that loss of PARKIN accelerates the onset of key NAFLD disease features. These observations suggest that loss of mitochondrial quality control in response to nutritional stress may contribute to mitochondrial dysfunction and the pathogenesis of NAFLD.
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Affiliation(s)
- R Undamatla
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - O G Fagunloye
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - J Chen
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - L R Edmunds
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - A Murali
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - A Mills
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - B Xie
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - M M Pangburn
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - I Sipula
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA
| | - G Gibson
- Department of Cell Biology, Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA, USA
| | - C St Croix
- Department of Cell Biology, Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA, USA
| | - M J Jurczak
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street, BST W1060, Pittsburgh, PA, 15213, USA.
- Center for Metabolism and Mitochondrial Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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Agochukwu-Mmonu N, Murali A, Wittmann D, Denton B, Dunn RL, Montie J, Peabody J, Miller D, Singh K. Development and Validation of Dynamic Multivariate Prediction Models of Sexual Function Recovery in Patients with Prostate Cancer Undergoing Radical Prostatectomy: Results from the MUSIC Statewide Collaborative. EUR UROL SUPPL 2022; 40:1-8. [PMID: 35638089 PMCID: PMC9142747 DOI: 10.1016/j.euros.2022.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2022] [Indexed: 11/18/2022] Open
Abstract
Background Radical prostatectomy (RP) is the most common definitive treatment for men with intermediate-risk prostate cancer and is frequently complicated by erectile dysfunction. Objective To develop and validate models to predict 12- and 24-month post-RP sexual function. Design, setting, and participants Using Michigan Urological Surgery Improvement Collaborative (MUSIC) registry data from 2016 to 2021, we developed dynamic, multivariate, random-forest models to predict sexual function recovery following RP. Model factors (established a priori) included baseline patient characteristics and repeated assessments of sexual satisfaction, and Expanded Prostate Cancer Index Composite 26 (EPIC-26) overall scores and sexual domain questions. Outcome measurements and statistical analysis We evaluated three outcomes related to sexual function: (1) the EPIC-26 sexual domain score (range 0–100); (2) the EPIC-26 sexual domain score dichotomized at ≥73 for “good” function; and (3) a dichotomized variable for erection quality at 12 and 24 months after RP. A gradient-boosting decision tree was used for the prediction models, which combines many decision trees into a single model. We evaluated the performance of our model using the root mean squared error (RMSE) and mean absolute error (MAE) for the EPIC-26 score as a continuous variable, and the area under the receiver operating characteristic curve (AUC) for the dichotomized EPIC-26 sexual domain score (SDS) and erection quality. All analyses were conducted using R v3.6.3. Results and limitations We identified 3983 patients at 12 months and 2494 patients at 24 months who were randomized to the derivation cohort at 12 and 24 months, respectively. Using baseline information only, our model predicted the 12-month EPIC-26 SDS with RMSE of 24 and MAE of 20. The AUC for predicting EPIC-26 SDS ≥73 (a previously published threshold) was 0.82. Our model predicted 24-month EPIC-26 SDS with RMSE of 26 and MAE of 21, and AUC for SDS ≥73 of 0.81. Inclusion of post-RP data improved the AUC to 0.91 and 0.94 at 12 and 24 months, respectively. A web tool has also been developed and is available at https://ml4lhs.shinyapps.io/askmusic_prostate_pro/. Conclusions Our model provides a valid way to predict sexual function recovery at 12 and 24 months after RP. With this dynamic, multivariate (multiple outcomes) model, accurate predictions can be made for decision-making and during survivorship, which may reduce decision regret. Patient summary Our prediction model allows patients considering prostate cancer surgery to understand their probability before and after surgery of recovering their erectile function and may reduce decision regret.
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Singh K, Murali A, Stevens H, Vydiswaran VGV, Bohnert A, Brummett CM, Fernandez AC. Predicting persistent opioid use after surgery using electronic health record and patient-reported data. Surgery 2022; 172:241-248. [PMID: 35181126 DOI: 10.1016/j.surg.2022.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND More than 100 million surgeries take place annually in the United States, and more than 90% of surgical patients receive an opioid prescription. A sizable minority of these patients will go on to use opioids long-term, contributing to the national opioid epidemic. METHODS The objective of this study was to develop and validate a model to predict persistent opioid use after surgery. Participants included surgical patients (≥18 years old) enrolled in a cohort study at an academic medical center between 2015 and 2018. Persistent opioid use was defined as filling opioid prescriptions in postdischarge days 4 to 90 and 91 to 180. Predictors included electronic health record data, state prescription drug monitoring data, and patient-reported measures. Three models were developed: a full, a restricted, and a minimal model using a derivation and validation cohort. RESULTS Of 24,040 patients, 4,879 (20%) experienced persistent opioid use. In the validation cohort, the full, restricted, and minimal model had C-statistics of 0.87 (95% CI 0.86-0.88), 0.86 (0.85-0.88), and 0.85 (0.84-0.87), respectively. All models performed better among patients with preoperative opioid use compared to opioid-naive patients (P < .001). The models slightly overpredicted risk in the validation cohort. The net benefit of using the restricted model to refer patients for preoperative counseling was 0.072 to 0.092, which is superior to evaluating no patients (net benefit of 0) or all patients (net benefit of -0.22 to -0.63). CONCLUSION This study developed and validated a prediction model for persistent opioid use using accessible data resources. The models achieved strong performance, outperforming prior published models.
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Affiliation(s)
- Karandeep Singh
- Department of Learning Health Sciences, University of Michigan Medical School, Ann Arbor, MI; Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI; Department of Urology, University of Michigan Medical School, Ann Arbor, MI; School of Information, University of Michigan, Ann Arbor, MI
| | | | - Haley Stevens
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, MI
| | - V G Vinod Vydiswaran
- Department of Learning Health Sciences, University of Michigan Medical School, Ann Arbor, MI; School of Information, University of Michigan, Ann Arbor, MI
| | - Amy Bohnert
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, MI; Division of Pain Medicine, Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI; VA Center for Clinical Management Research, Ann Arbor, MI
| | - Chad M Brummett
- Division of Pain Medicine, Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI
| | - Anne C Fernandez
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, MI.
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Murali A, Giri V, Cameron H, Sperber S, Kamp H, Haake V, Walk T, Rietjens I, van Ravenzwaay B. The safety of artificial sweeteners examined by an integrated metabolomics and gut bacterial profiling approach of Acesulfame K and Saccharin treated Wistar rats. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00777-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Vydiswaran VGV, Strayhorn A, Zhao X, Robinson P, Agarwal M, Bagazinski E, Essiet M, Iott BE, Joo H, Ko P, Lee D, Lu JX, Liu J, Murali A, Sasagawa K, Wang T, Yuan N. Hybrid bag of approaches to characterize selection criteria for cohort identification. J Am Med Inform Assoc 2021; 26:1172-1180. [PMID: 31197354 DOI: 10.1093/jamia/ocz079] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/23/2019] [Accepted: 05/01/2019] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The 2018 National NLP Clinical Challenge (2018 n2c2) focused on the task of cohort selection for clinical trials, where participating systems were tasked with analyzing longitudinal patient records to determine if the patients met or did not meet any of the 13 selection criteria. This article describes our participation in this shared task. MATERIALS AND METHODS We followed a hybrid approach combining pattern-based, knowledge-intensive, and feature weighting techniques. After preprocessing the notes using publicly available natural language processing tools, we developed individual criterion-specific components that relied on collecting knowledge resources relevant for these criteria and pattern-based and weighting approaches to identify "met" and "not met" cases. RESULTS As part of the 2018 n2c2 challenge, 3 runs were submitted. The overall micro-averaged F1 on the training set was 0.9444. On the test set, the micro-averaged F1 for the 3 submitted runs were 0.9075, 0.9065, and 0.9056. The best run was placed second in the overall challenge and all 3 runs were statistically similar to the top-ranked system. A reimplemented system achieved the best overall F1 of 0.9111 on the test set. DISCUSSION We highlight the need for a focused resource-intensive effort to address the class imbalance in the cohort selection identification task. CONCLUSION Our hybrid approach was able to identify all selection criteria with high F1 performance on both training and test sets. Based on our participation in the 2018 n2c2 task, we conclude that there is merit in continuing a focused criterion-specific analysis and developing appropriate knowledge resources to build a quality cohort selection system.
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Affiliation(s)
- V G Vinod Vydiswaran
- Department of Learning Health Sciences, University of Michigan, Ann Arbor, Michigan, USA.,School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Asher Strayhorn
- Department of Learning Health Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | - Xinyan Zhao
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Phil Robinson
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Mahesh Agarwal
- Department of Mathematics and Statistics, College of Arts, Sciences, and Letters, University of Michigan-Dearborn, Dearborn, Michigan, USA
| | - Erin Bagazinski
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Madia Essiet
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Bradley E Iott
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Hyeon Joo
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - PingJui Ko
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Dahee Lee
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Jin Xiu Lu
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Jinghui Liu
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Adharsh Murali
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Koki Sasagawa
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Tianshi Wang
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
| | - Nalingna Yuan
- School of Information, University of Michigan, Ann Arbor, Michigan, USA
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Rajappa S, Bajpai J, Basade M, Ganvir M, Goswami C, Murali A, Rathi AK, Kaushal V, Jain S, Parikh PM, Aggarwal S. Practical consensus recommendations regarding the use of hormonal therapy in metastatic breast cancer. South Asian J Cancer 2020; 7:137-141. [PMID: 29721481 PMCID: PMC5909292 DOI: 10.4103/sajc.sajc_121_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Metastatic breast cancer (MBC) is cancer that has spread from the breast to another part of the body or has come back in another distant location. Treatment options for MBC depend on several factors. One of these factors is the levels of hormone receptors (HRs) in the tumor. Cancers with high levels of HRs, called HR-positive, use the hormones estrogen and progesterone to grow and spread. Hormonal therapy is a type of treatment specifically for HR-positive breast cancer. This expert group used data from published literature, practical experience and opinion of a large group of academic oncologists to arrive at these practical consensus recommendations in regards with the use of hormonal therapy and the management of HR-positive MBC for the benefit of community oncologists.
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Affiliation(s)
- Senthil Rajappa
- Department of Medical Oncology, IACH, Hyderabad, Telangana, India
| | - J Bajpai
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - M Basade
- Department of Medical Oncology, Saifee Hospital, Mumbai, Maharashtra, India
| | - M Ganvir
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
| | - C Goswami
- Department of Radiation Oncology, Apollo Gleneagles Hospital, Kolkata, West Bengal, India
| | - A Murali
- Department of Medical Oncology, Sarvodaya Hospital, Faridabad, India
| | - A K Rathi
- Department of Medical Oncology, Sarvodaya Hospital, Faridabad, India
| | - V Kaushal
- Department of Radiation Oncology, MAMC, New Delhi, India
| | - S Jain
- Department of Radiation Oncology, RCC, Rohtak, Haryana, India
| | - Purvish M Parikh
- Department of Surgical Oncology, Ludhiana Medicity Hospital, Ludhinana, Punjab, India
| | - S Aggarwal
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
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Ginsburg* K, Murali A, Cher M, Miller D, George A, Singh K. MP23-14 PREDICTING TREATMENT-FREE SURVIVAL FOR PATIENTS WITH LOCALIZED PROSTATE CANCER ON ACTIVE SURVEILLANCE: RESULTS FROM THE MUSIC STATEWIDE COLLABORATIVE. J Urol 2020. [DOI: 10.1097/ju.0000000000000856.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rashmi M, Meena H, Meena C, Kushveer JS, Busi S, Murali A, Sarma VV. Anti-quorum sensing and antibiofilm potential of Alternaria alternata, a foliar endophyte of Carica papaya, evidenced by QS assays and in-silico analysis. Fungal Biol 2018; 122:998-1012. [PMID: 30227935 DOI: 10.1016/j.funbio.2018.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/03/2018] [Accepted: 07/03/2018] [Indexed: 12/16/2022]
Abstract
In the present study, secondary metabolites from an endophytic fungus, Alternaria alternata, colonizing Carica papaya, demonstrated antiquorum sensing properties against Pseudomonas aeruginosa. This study reports the antagonistic effects of fungal crude extract of A. alternata against the various quorum sensing (QS) associated virulent factors such as percentage decrease in production of pyocyanin, alginate, chitinase and rhamnolipid; significant decrease in proteases activity such as LasA protease activity, staphylolytic activity, Las B elastase; and a marked decrease in biofilm formation and associated factors such as exopolysaccharide (EPS) production and cell surface hydrophobicity (CSH). Further, motility pattern i.e., swimming and swarming was also found to be inhibited. This down regulation of QS and associated factors are further supported by in-silico analysis of interaction between QS receptor LasR and bioactive molecules viz., sulfurous acid, 2-propyl tridecyl ester and 1,2-benzenedicarboxylic acid, bis(2-methylpropyl) ester present in fungal crude extract, found based on GCMS analysis, sketches the modulating ability of QS expression. This is the first report on an endophytic fungus of C. papaya having a role in QS inhibition against P. aeruginosa and lays a platform to explore further the endophytes for potent therapeutic agents in QS.
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Affiliation(s)
- M Rashmi
- Department of Biotechnology, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - Himani Meena
- Department of Microbiology, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - Chetan Meena
- Centre for Bioinformatics, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - J S Kushveer
- Department of Biotechnology, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - Siddhardha Busi
- Department of Microbiology, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - A Murali
- Centre for Bioinformatics, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - V V Sarma
- Department of Biotechnology, Pondicherry University, Kalapet, Pondicherry, 605014, India.
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Murali A, Ramlogan-Steel C, Andrzejewski S, Dhungel B, Steel J, Layton C. The 8-fold quadrant dissection method for ex vivo human interventional retinal experimentation. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.01558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Murali
- Faculty of Medicine; University of Queensland; Brisbane Australia
- Ophthalmology Research Unit; Gallipoli Medical Research Institute; Greenslopes Australia
| | - C. Ramlogan-Steel
- Faculty of Medicine; University of Queensland; Brisbane Australia
- Ophthalmology Research Unit; Gallipoli Medical Research Institute; Greenslopes Australia
| | - S. Andrzejewski
- Faculty of Medicine; University of Queensland; Brisbane Australia
- Ophthalmology Research Unit; Gallipoli Medical Research Institute; Greenslopes Australia
| | - B. Dhungel
- Faculty of Medicine; University of Queensland; Brisbane Australia
- Liver Cancer Research Unit; Gallipoli Medical Research Institute; Greenslopes Australia
| | - J. Steel
- Faculty of Medicine; University of Queensland; Brisbane Australia
- Liver Cancer Research Unit; Gallipoli Medical Research Institute; Greenslopes Australia
| | - C. Layton
- Faculty of Medicine; University of Queensland; Brisbane Australia
- Ophthalmology Research Unit; Gallipoli Medical Research Institute; Greenslopes Australia
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Layton C, Dhungel B, Andrzejewski S, Jayachandran A, Murali A, Ramlogan-Steel C, Steel J. Gene therapy targeting of choroidal disease and AAV transcytosis through the outer blood retina barrier epithelium. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.02683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Layton
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
| | - B. Dhungel
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
| | - S. Andrzejewski
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
| | - A. Jayachandran
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
| | - A. Murali
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
| | - C. Ramlogan-Steel
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
| | - J. Steel
- Gallipoli Medical Research Institute; University of Queensland; Greenslopes Australia
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George TJ, Ratnakar K, Thangavelu P, Mohamed KS, Premkumar K, Murali A. Interesting cause of massive small-bowel bleed in a tropical country. VideoGIE 2017; 2:27-28. [PMID: 29905241 PMCID: PMC5990427 DOI: 10.1016/j.vgie.2016.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Radhakrishnan V, Murali A, Mishra S. Inadvertent intramuscular administration of vincristine in two pediatric patients with uneventful outcomes. Indian J Cancer 2016; 53:303. [DOI: 10.4103/0019-509x.197731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Singh V, Borkotoky S, Murali A, Rao JL, Rao TKG, Dhoble SJ. Electron paramagnetic resonance and photoluminescence investigation on ultraviolet-emitting gadolinium-ion-doped CaAl₁₂O₁₉ phosphors. Spectrochim Acta A Mol Biomol Spectrosc 2015; 139:1-6. [PMID: 25546490 DOI: 10.1016/j.saa.2014.11.097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 10/12/2014] [Accepted: 11/19/2014] [Indexed: 06/04/2023]
Abstract
The gadolinium doped CaAl12O19 phosphor has been prepared by a low temperature solution combustion method in a short time and characterized using powder X-ray diffraction, energy dispersive analysis of X-ray mapping, electron paramagnetic resonance (EPR) and photoluminescence spectroscopic techniques. EPR and optical analysis of the sample confirm the presence of Gd(3+) in the CaAl12O19 matrix.
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Affiliation(s)
- Vijay Singh
- Department of Chemical Engineering, Konkuk University, Seoul 143-701, Republic of Korea.
| | - S Borkotoky
- Centre for Bioinformatics, Pondicherry University, Puducherry 605 014, India
| | - A Murali
- Centre for Bioinformatics, Pondicherry University, Puducherry 605 014, India
| | - J L Rao
- Department of Physics, Sri Venkateswara University, Tirupati 517 502, India
| | - T K Gundu Rao
- Institute of Physics, University of Sao Paulo, Sao Paulo, SP 05508-090, Brazil
| | - S J Dhoble
- Department of Physics, RTM Nagpur University, Nagpur 440033, India
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Murali A, Maue RA, Dolph PJ. Reversible symptoms and clearance of mutant prion protein in an inducible model of a genetic prion disease in Drosophila melanogaster. Neurobiol Dis 2014; 67:71-8. [PMID: 24686303 DOI: 10.1016/j.nbd.2014.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 02/18/2014] [Accepted: 03/20/2014] [Indexed: 11/19/2022] Open
Abstract
Prion diseases are progressive disorders that affect the central nervous system leading to memory loss, personality changes, ataxia and neurodegeneration. In humans, these disorders include Creutzfeldt-Jakob disease, kuru and Gerstmann-Straüssler-Scheinker (GSS) syndrome, the latter being a dominantly inherited prion disease associated with missense mutations in the gene that codes for the prion protein. The exact mechanism by which mutant prion proteins affect the central nervous system and cause neurological disease is not well understood. We have generated an inducible model of GSS disease in Drosophila melanogaster by temporally expressing a misfolded form of the murine prion protein in cholinergic neurons. Flies accumulating this mutant protein develop motor abnormalities which are associated with electrophysiological defects in cholinergic neurons. We find that, upon blocking the expression of the mutant protein, both behavioral and electrophysiological defects can be reversed. This represents the first case of reversibility reported in a model of genetic prion disease. Additionally, we observe that endogenous mechanisms exist within Drosophila that are capable of clearing the accumulated prion protein.
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Affiliation(s)
- A Murali
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
| | - R A Maue
- Department of Physiology and Neurobiology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - P J Dolph
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA.
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Murali A, Narasimhalu CRV, Madhavan M, Sujithkumar S. Kikuchi's disease: an uncommon cause of cervical lymphadenopathy. J Indian Med Assoc 2014; 112:51-53. [PMID: 25935953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Kikuchi Fujimoto's disease is a benign self limiting disorder presenting with localised cervical lymphadenopathy, fever, weight loss and night sweats. It is a rare disease with worldwide distribution but commonly reported from Asia. It is diagnosed by excision biopsy of the lymph nodes. Clinical features suggest a viral aetiology though not proven. It is often misdiagnosed as either systemic lupus erythematosus or malignant lymphoma. Better understanding as well as high clinical suspicion would aid in the diagnosis of the disease. Treatment is mainly symptomatic, with non-steroidal analgesics and antipyretics. Corticosteroids are rarely indicated. Although patients show a spontaneous recovery in 1-4 months, a follow-up of several years would be required to study the development of SLE in these patients.
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Selvaganesh M, Murali A, Mookambik RV, Jayachandran K. Hypokalaemic paralysis and normocalcaemic tetany--a rare presentation of Sjogren's syndrome. J Assoc Physicians India 2013; 61:818-820. [PMID: 24974497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
38 year old woman was admitted with acute onset of quadriplegia. Biochemical investigation revealed severe hypokalaemia with hyperchloraemic metabolic acidosis, alkaline urine, and positive urinary anion gap which are the hallmark of distal tubular acidosis. In addition she also had hypophosphataemia, normoglycaemic glycosuria, aminoaciduria, and hyperphosphaturia suggestive of proximal tubular dysfunction. Further evaluation confirmed the diagnosis of Sjogren's syndrome. Interestingly our patient also had carpopedal spasm despite normal calcium and magnesium level. Quadriplegia and carpopedal spasm improved with correction of hypokalaemia and acidosis. Proximal tubular abnormalities (except albuminuria) were normalised at the time of discharge. Distal tubular acidosis is a well known renal manifestation of Sjogren's syndrome. But this type of transient proximal tubular dysfunction with distal tubular acidosis in Sjogren's syndrome is very rare and hypokalaemic tetany also deserves mention.
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Meeran M, Murali A, Balakrishnan R, Narasimhan D. "Herbal remedy is natural and safe"--truth or myth? J Assoc Physicians India 2013; 61:848-850. [PMID: 24974507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Neem oil is often used externally as a traditional medicine in India. Its ingestion, even in small doses produces toxic effects like severe metabolic acidosis, seizures, renal failure and encephalopathy. Management is supportive and prognosis is generally good but fatalities may occur. Herein we report an unusual case of neem oil toxicity in a previously normal adult.
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19
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Murali A, Narasimhan D, Krishnaveni J, Rajendiran G. Protein losing enteropathy in systemic lupus erythematosus. J Assoc Physicians India 2013; 61:747-749. [PMID: 24772735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Systemic lupus erythematosus (SLE) is a chronic immunologic disorder that may affect multiple organ systems and present with myriad of clinical features. Gastro-intestinal (GI) manifestations are oral ulcers, dysphagia and abdominal pain caused by autoimmune peritonitis/intestinal vasculitis. Hypoalbuminaemia due to GI loss is uncommon. Protein losing enteropathy (PLE) is a group of clinical entities where there is loss of protein through GI tract. PLE due to SLE is rare but it can be the initial manifestation. Patients usually present with pedal oedema mimicking nephrotic syndrome clinically. It is diagnosed by excluding other causes of hypoalbuminaemia. Radio nucleotide labelled albumin scan is useful in confirming albumin loss through GI tract. Often there is a good response to corticosteroids and immunosuppressive drugs. Here we present two SLE patients whose presenting manifestation was protein losing enteropathy and both improved with corticosteroids.
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20
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Murali A, Balu K, Paari V, Rajendiran G. Atrial flutter and pericarditis--a rare complication of right lobe amoebic liver abscess. Med J Malaysia 2011; 66:499-500. [PMID: 22390111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A 38 year old gentleman presented with fever and right hypochondrial pain. On further evaluation he was detected to have an amoebic liver abscess (ALA) in the right lobe of the liver. The abscess yielded anchovy sauce pus on percutaneous drainage. Following the percutaneous drainage the patient developed tachycardia. Electrocardiogram revealed atrial flutter with rapid ventricular rate and ST elevation in all leads suggestive of pericarditis. The atrial flutter was reverted to sinus rhythm by cardioversion. The patient then had an uncomplicated convalescence. Amoebic pericarditis, though rare, is a serious complication of amoebic liver abscess. Pericardial complications are usually seen with left lobe liver abscess due to its proximity. Both pericarditis and cardiac arrhythmias due to amoebic liver abscess especially from right lobe are very rare.
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Affiliation(s)
- A Murali
- PSG Institute of Medical Sciences & Research, Coimbatore, Tamilnadu, India.
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21
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Murali A, Rajendiran G, Ranganathan K. Bald aortic arch in Takayasu arteritis. Postgrad Med J 2011; 87:322. [DOI: 10.1136/pgmj.2010.113605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Murali A, Rajendiran G, Ranganathan K, Shanthakumari S. Disseminated infection with Strongyloides stercoralis in a diabetic patient. Indian J Med Microbiol 2011; 28:407-8. [PMID: 20966585 DOI: 10.4103/0255-0857.71854] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
A 58-year-old male diabetic who was operated for carcinoma larynx 4 years back was admitted with exertional dyspnoea and bilateral leg swelling for the past 2 years. Over the last 2 months, there was a progressive worsening of symptoms. Echocardiography done 2 years back showed pericardial effusion. Echo done during the current admission also showed pericardial effusion with preserved left ventricular function; cytological examination of the pericardial fluid showed larvae of Strongyloides stercoralis. He was treated with antinematodal drugs. A follow-up echo done at discharge showed no pericardial effusion and the patient was completely asymptomatic. To our knowledge, this is the first reported case of Strongyloides pericardial effusion in a diabetic patient.
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Affiliation(s)
- A Murali
- PSG Institute of Medical Sciences & Research, Coimbatore, Tamil Nadu, India.
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23
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Murali A, Sujithkumar S, Srinivasan N, Kannan R. Reversible cardiomyopathy due to doxorubicin. Natl Med J India 2010; 23:377-378. [PMID: 21563339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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24
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Narasimhalu CRV, Murali A, Kannan R, Srinivasan N. Blister beetle dermatitis. J Indian Med Assoc 2010; 108:781-782. [PMID: 21510580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Blister beetle dermatitis or paederus dermatitis is an irritant contact dermatitis due to accidental crush of insects belonging to paederus family on the skin. The characteristic features of blister beetle dermatitis are linear erythematous itchy vesicles over the exposed parts of body and kissing lesions. This condition is commonly seen during or after rainy season. The treatment is removal of irritant by gentle washing and topical steroids. It is often misdiagnosed and causes significant morbidity among the rural population.
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25
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Murugavel KG, Mathews S, Jayanthi V, Shankar EM, Hari R, Surendran R, Vengatesan A, Raghuram K, Rajasambandam P, Murali A, Srinivas U, Palaniswamy KR, Pugazhendhi T, Thyagarajan SP. Alpha-fetoprotein as a tumor marker in hepatocellular carcinoma: investigations in south Indian subjects with hepatotropic virus and aflatoxin etiologies. Int J Infect Dis 2008; 12:e71-6. [PMID: 18658001 DOI: 10.1016/j.ijid.2008.04.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Revised: 04/30/2008] [Accepted: 04/30/2008] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES The prevalence of hepatitis B virus (HBV) is reportedly the main cause of hepatocellular carcinoma (HCC) in India, where hepatitis C virus (HCV)-associated HCC is believed to be relatively less prevalent. We verified the usefulness of alpha-fetoprotein (AFP) as a tumor marker and analyzed the influence of viral etiology on AFP levels in HCC. METHODS Of a total of 1012 cases with liver disease, 202 were investigated for the presence of AFP (142 HCC cases, 30 cirrhosis cases, and 30 chronic liver disease (CLD) cases). In addition, serum samples from 30 healthy patients, 30 hepatitis B surface antigen (HBsAg) carriers, and 30 acute viral hepatitis cases were included as controls. AFP was quantitatively determined using a commercial ELISA (Quorum Diagnostics, Canada). Out of the 142 HCC cases screened for AFP, aflatoxin B1 (AFB1) detection was carried out in 38 HCC cases using an in-house immunoperoxidase test. RESULTS In HBV and HCV co-infected HCC cases, the AFP positivity was 85.7%. In HBV alone-associated HCC, the positivity was 62.9%, and 54.5% of AFB1 positive HCC cases showed AFP positivity. In HBV and HCV negative HCC cases, the positivity was 20.5%, and in HCV-associated HCC it was 17.6%. The HBV/HCV co-infected group and HBV alone positive HCC cases had significantly elevated levels of AFP. When AFP positivity was analyzed based on the marker profile of HBV, 89.7% of AFP positive cases were HBV-DNA positive. CONCLUSIONS The overall positivity pattern of AFP in HCC does indicate that higher levels of AFP are observed with hepatitis virus positivity, especially with HBV. Further studies must be carried out to correlate the serum levels of AFP with the size, number, and degree of differentiation of HCC nodules.
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Affiliation(s)
- Kailapuri G Murugavel
- Infectious Diseases Laboratory, YRG Centre for AIDS Research & Education, VHS Hospital Campus, Taramani, Chennai 600 113, India.
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26
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Prabhu PR, Cherian JV, Varghese SJ, Gunaseelan K, Murali A, Jayanthi V. Inguinal metastasis in gastric cancer-a path less trodden. Gastrointest Cancer Res 2008; 2:102-3. [PMID: 19259303 PMCID: PMC2630826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- P. Rajesh Prabhu
- Departments of Gastroenterology, Stanley Medical College, Chennai, India
| | - Jijo V. Cherian
- Departments of Gastroenterology, Stanley Medical College, Chennai, India
| | - S. Joye Varghese
- Departments of Gastroenterology, Stanley Medical College, Chennai, India
| | | | - A. Murali
- Departments of Gastroenterology, Stanley Medical College, Chennai, India
| | - V. Jayanthi
- Departments of Gastroenterology, Stanley Medical College, Chennai, India
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27
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Murugavel KG, Naranatt PP, Shankar EM, Mathews S, Raghuram K, Rajasambandam P, Jayanthi V, Surendran R, Murali A, Srinivas U, Palaniswamy KR, Srikumari D, Thyagarajan SP. Prevalence of aflatoxin B1 in liver biopsies of proven hepatocellular carcinoma in India determined by an in-house immunoperoxidase test. J Med Microbiol 2008; 56:1455-1459. [PMID: 17965344 DOI: 10.1099/jmm.0.47151-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the fourth leading cause of cancer-related death in the world. The incidence of HCC in India is reportedly low and varies from 0.2 to 1.9 %. Aflatoxins, secondary metabolites produced by Aspergillus flavus and Aspergillus parasiticus, are potent human carcinogens implicated in HCC. The prevalence of aflatoxin B1 (AFB1) as co-carcinogen was analysed using an in-house immunoperoxidase test in 31 liver biopsies and 7 liver-resection specimens from histopathologically proven HCC, and in 15 liver biopsies from cirrhosis patients (control group). Serum was tested for hepatitis B and C serological markers using commercial assays, and for AFB1 using an in-house ELISA with a sensitivity of approximately 1 ng ml(-1) for AFB1. In spite of positive AFB1 immunostaining in HCC cases, all serum specimens, from both HCC and the control groups, were AFB1-negative. There were 18 (58.1 %) HCC cases that revealed AFB1 in liver biopsies; 68.8 % (n=11) of non-B non-C hepatitis cases with HCC and 46.1 % (n=6) of the hepatitis B surface-antigen-positive subjects were positive for AFB1. Out of the two hepatitis B/hepatitis C virus co-infected cases, one was positive for AFB1. Of seven tumour-resection samples, six were positive for AFB1. Only one case revealed AFB1 in the non-tumour area of the resected material. Thus AFB1 staining was significantly associated with tumour tissue (P=0.03). Aflatoxins proved to have a significant association with HCC in this peninsular part of the subcontinent. The impact seems to be a cumulative process, as revealed by the AFB1 deposits in HCC liver tissue, even though the serum levels were undetectable.
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Affiliation(s)
- K G Murugavel
- Department of Microbiology, Faculty of Medicine, Dr ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, India
| | - P P Naranatt
- Department of Microbiology, Faculty of Medicine, Dr ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, India
| | - E M Shankar
- Department of Microbiology, Faculty of Medicine, Dr ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, India
| | - S Mathews
- Medical Gastroenterology Unit of the Government General Hospital, Chennai 600 001, India
| | - K Raghuram
- Medical Gastroenterology Unit of the Government General Hospital, Chennai 600 001, India
| | - P Rajasambandam
- Medical Gastroenterology Unit of the Government General Hospital, Chennai 600 001, India
| | - V Jayanthi
- Medical and Surgical Gastroenterology Unit of the Government Stanley Medical College and Hospital, Chennai 600 001, India
| | - R Surendran
- Medical and Surgical Gastroenterology Unit of the Government Stanley Medical College and Hospital, Chennai 600 001, India
| | - A Murali
- Medical and Surgical Gastroenterology Unit of the Government Stanley Medical College and Hospital, Chennai 600 001, India
| | - U Srinivas
- Medical and Surgical Gastroenterology Unit of the Government Stanley Medical College and Hospital, Chennai 600 001, India
| | - K R Palaniswamy
- Medical and Surgical Gastroenterology Unit of the Government Stanley Medical College and Hospital, Chennai 600 001, India
| | - D Srikumari
- Government Kilpauk Medical College and Hospital, Chennai 600 029, India
| | - S P Thyagarajan
- Department of Microbiology, Faculty of Medicine, Dr ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, India
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Rajesh N, Murali A, Varghese SJ, Jijo V C, Jayanthi V. Common bile duct: a retreat for ascariasis! Ann Hepatol 2006; 5:115. [PMID: 16807518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- N Rajesh
- Department of Medical Gastroenterology, Stanley Medical College Hospital, Chennai, India
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29
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Cherian JV, Murali A, Vardarajan R, Joye Varghese S, Jayanthi V. An unusual cause of overt gastrointestinal bleeding. J Gastrointestin Liver Dis 2006; 15:321-2. [PMID: 17013461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
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30
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Nagarajan NS, Murugesh N, Thirupathy Kumaresan P, Radha N, Murali A. Antidiabetic and antihyperlipemic effects of Clemeo felina. Fitoterapia 2005; 76:310-5. [PMID: 15885927 DOI: 10.1016/j.fitote.2005.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2004] [Revised: 03/17/2005] [Accepted: 03/17/2005] [Indexed: 11/18/2022]
Abstract
Petroleum ether and benzene extracts of Clemeo felina, given orally at doses of 300 mg kg(-1) day(-1) for 30 days, were found to be antidiabetic and antihyperlipemic on alloxan diabetic rats. Moreover, a significant decrease in the activities of serum enzymes like alkaline phosphatase, acid phosphatase and HMGCoA reductase activity in the liver was observed. However, treatment of rats with the extracts as well as standard antidiabetic drugs increased liver hexakinase activity and serum LDH activity.
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Affiliation(s)
- N S Nagarajan
- Department of Chemistry, Gandhigram Rural Institute, Deemed University, Gandhigram 624 302, Tamil Nadu, India.
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31
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Mohan KV, Murugavel KG, Mathews S, Raghuram K, Rajasambandam P, Murali A, Srinivas U, Palaniswamy KR, Panda SK, Thyagarajan SP. Diagnosis of hepatitis C virus infection by ELISA, RIBA and RT-PCR: a comparative evaluation. Indian J Gastroenterol 1999; 18:73-5. [PMID: 10319537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To evaluate the efficacy of second-generation ELISA (ELISA-2), third-generation ELISA (ELISA-3) and third-generation recombinant immunoblot assay (RIBA 3.0) for detection of antibodies to hepatitis C virus (anti-HCV) in comparison with reverse transcriptase-polymerase chain reaction (RT-PCR) to detect HCV RNA for the diagnosis of hepatitis C. METHODS Sera of 108 patients with chronic liver disease (CLD) were analyzed by ELISA-2, ELISA-3, RIBA 3.0 and RT-PCR in the first part of the study; in the second part, sera of 105 patients with non-chronic liver disease were evaluated with ELISA-3, RIBA 3.0 and RT-PCR. RESULTS In the CLD group, anti-HCV was positive in 4.6%, 14.8% and 16.6% by ELISA-2, ELISA-3 and RIBA 3.0, respectively. Among these anti-HCV positive cases, HCV RNA was positive in 100%, 58.9% and 64%, respectively. ELISA-2 did not give false-positive results, but missed substantial number of anti-HCV positive cases (p < 0.001). In the second group, anti-HCV was positive in 76.3% by ELISA-3 and 68.6% by RIBA 3.0 (p:ns). HCV-RNA was positive in 88.7% of ELISA- and RIBA-positive cases; in 60% of ELISA-positive, RIBA-indeterminate cases; and in 46.4% of ELISA-negative, RIBA-negative cases. CONCLUSIONS ELISA-2 is not a suitable assay for routine screening. ELISA-3 was at par with RIBA 3.0 and it can be recommended for routine screening for anti-HCV. RT-PCR for HCV is of value in detecting early viremic, anti-HCV negative cases; this may be of importance in the treatment of hepatitis C.
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Affiliation(s)
- K V Mohan
- Department of Microbiology, Dr ALMPGIBMS, Taramani, Chennai
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32
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Boghaert E, Murali A, Robertson D, Jacob R, Zimmer S. Inhibition of invasion in vitro and stimulation of aggregation by 13-cis retinoic acid correlates with the clustering of N-CAM in c-Ha-ras transformed glial cells. Int J Oncol 1996; 9:1175-82. [PMID: 21541625 DOI: 10.3892/ijo.9.6.1175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Invasion distinguishes malignant from benign primary brain tumors. The molecular mechanisms which permit malignant brain tumor cells to escape from the primary tumor mass and by which they can migrate through normal brain tissue are largely unknown. 13-cis retinoic acid (cRA) can induce morphological, biochemical and functional differentiation characteristics in various malignant tumors. Upon treatment of diffusely invasive hamster glial cells (CxT24neo3) with 30 mu M cRA, we found a significant reduction in cell proliferation in monolayer and spheroid cultures. cRA also inhibits invasion of CxT24neo3 through a reconstituted basement membrane (Matrigel(R)) in a dose dependent manner. Homotypic cell-cell adhesion, on the contrary, is stimulated in the absence of extracellular Ca++ by either treatment or pretreatment of CxT24neo3 with cRA. These phenotypic changes correlate with the induction of the clustering of the neural cell adhesion molecule: N-CAM at sites of cell-cell contact. This phenomenon is observed following immunohistochemical staining for N-CAM of CxT24neo3 cells that were treated with cRA in monolayer cultures. The relationship between reduction of proliferation and invasion in vitro and the increased homotypic cell-cell adhesion with clustering of N-CAM implicates N-CAM as a molecular effector molecule for reduction of malignancy by cRA.
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Affiliation(s)
- E Boghaert
- UNIV KENTUCKY,DEPT MICROBIOL & IMMUNOL,LUCILLE PARKER MARKEY CANC CTR,LEXINGTON,KY 40536
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