1
|
Handler J, Lee OJ, Chatrath S, McGarvey J, Fitch T, Jose D, Vozenilek J. Can a 5-to-90-day Mortality Predictor Perform Consistently Across Time and Equitably Across Populations? J Med Syst 2023; 47:67. [PMID: 37395923 PMCID: PMC10317873 DOI: 10.1007/s10916-023-01962-z] [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: 01/03/2023] [Accepted: 06/22/2023] [Indexed: 07/04/2023]
Abstract
Advance care planning (ACP) facilitates end-of-life care, yet many die without it. Timely and accurate mortality prediction may encourage ACP. However, performance of predictors typically differs among sub-populations (e.g., rural vs. urban) and worsens over time ("concept drift"). Therefore, we assessed performance equity and consistency for a novel 5-to-90-day mortality predictor across various demographies, geographies, and timeframes (n = 76,812 total encounters). Predictions were made for the first day of included adult inpatient admissions on a retrospective dataset. AUC-PR remained at 29% both pre-COVID (throughout 2018) and during COVID (8 months in 2021). Pre-COVID-19 recall and precision were 58% and 25% respectively at the 12.5% certainty cutoff, and 12% and 44% at the 37.5% cutoff. During COVID-19, recall and precision were 59% and 26% at the 12.5% cutoff, and 11% and 43% at the 37.5% cutoff. Pre-COVID, compared to the overall population, recall was lower at the 12.5% cutoff in the White, non-Hispanic subgroup and at both cutoffs in the rural subgroup. During COVID-19, precision at the 12.5% cutoff was lower than that of the overall population for the non-White and non-White female subgroups. No other significant differences were seen between subgroups and the corresponding overall population. Overall performance during COVID was unchanged from pre-pandemic performance. Although some comparisons (especially precision at the 37.5% cutoff) were underpowered, precision at the 12.5% cutoff was equitable across most demographies, regardless of the pandemic. Mortality prediction to prioritize ACP conversations can be provided consistently and equitably across many studied timeframes and sub-populations.
Collapse
Affiliation(s)
- Jonathan Handler
- Clinical Intelligence and Advanced Data Lab, OSF Healthcare System, 1306 N Berkeley Ave, Peoria, IL, 61603, USA.
- Department of Emergency Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Olivia J Lee
- University of Illinois College of Medicine at Peoria, Peoria, IL, USA
| | - Sheena Chatrath
- University of Illinois College of Medicine at Peoria, Peoria, IL, USA
| | - Jeremy McGarvey
- Ministry Healthcare Analytics, OSF HealthCare System, Peoria, IL, USA
| | - Tyler Fitch
- Internal Medicine and Pediatrics, OSF Healthcare System, Peoria, IL, USA
| | - Divya Jose
- Business Intelligence Consulting, Indus Group, Wheeling, IL, USA
| | - John Vozenilek
- University of Illinois College of Medicine at Peoria, Peoria, IL, USA
- OSF Innovation, OSF Healthcare System, Peoria, IL, USA
- University of Illinois College of Engineering, Urbana Champaign, Champaign, IL, USA
| |
Collapse
|
2
|
Gupta N, Bhat SN, Reddysetti S, Afees Ahamed MA, Jose D, Sarvepalli AS, Joylin S, Godkhindi VM, Rabaan AA, Saravu K. Clinical profile, diagnosis, treatment, and outcome of patients with tubercular versus nontubercular causes of spine involvement: A retrospective cohort study from India. Int J Mycobacteriol 2022; 11:75-82. [PMID: 35295027 DOI: 10.4103/ijmy.ijmy_243_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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] [Indexed: 06/14/2023] Open
Abstract
BACKGROUND In tuberculosis (TB) endemic areas, other pyogenic causes of spine involvement may be missed. The study aimed to describe TB and non-TB causes of spine involvement and identify features that can help in differentiating them. METHODS A retrospective cohort study was conducted to screen the clinical records of all admitted patients (Kasturba Hospital, Manipal) in 2018-20 for a diagnosis of spondylitis and/or sacroiliitis. The clinical features, radiological findings, laboratory parameters, treatment details, and outcomes were compared among those diagnosed with confirmed TB, confirmed brucellosis, or confirmed pyogenic infection. A scoring system was also developed to differentiate spondylodiscitis due to tuberculous and pyogenic causes. The qualitative variables were compared using the Chi-square test, while quantitative variables were compared using the one-way analysis of variance test. RESULTS Of 120 patients with spine infections, a total of 85 patients were confirmed with the microbiological diagnosis of interest. Involvement of the thoracic spine, longer duration of illness, and caseous granulomatous reaction on histopathology was more common in TB patients. Male gender, involvement of lumbar vertebra, and neutrophilic infiltrate on histopathology were more common in brucellosis patients. Male gender, diabetes mellitus, involvement of lumbar vertebra, neutrophilic infiltrate on histopathology, leukocytosis, and increased C-reactive protein were more commonly seen in patients with pyogenic infection. The scoring system had a sensitivity and specificity of 75% and 91%, respectively, when used to differentiate TB from pyogenic infection. CONCLUSIONS In resource-limited settings, suggestive findings can be used to decide empiric therapy.
Collapse
Affiliation(s)
- Nitin Gupta
- Department of Infectious Diseases, Kasturba Medical College, Manipal, Manipal Academy of Higher Education; Manipal Center for Infectious Diseases, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Shyamasunder N Bhat
- Department of Orthopaedics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Suhas Reddysetti
- Department of Medicine, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - M A Afees Ahamed
- Department of Medicine, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Divya Jose
- Department of Medicine, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Aravind Srivatsa Sarvepalli
- Department of Medicine, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sowmya Joylin
- Department of Infectious Diseases, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Vishwapriya M Godkhindi
- Department of Pathology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ali A Rabaan
- Department of Molecular Diagnostic Laboratory, Johns Hopkins Aramco Healthcare, Dhahran; Department of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Kavitha Saravu
- Department of Infectious Diseases, Kasturba Medical College, Manipal, Manipal Academy of Higher Education; Manipal Center for Infectious Diseases, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, Karnataka, India
| |
Collapse
|
3
|
Jose D, Allen AL, Blakley B, Al-Dissi A. Evaluation of metallothionein and Ki-67 expression in chronic cholangiohepatitis in cats. Can J Vet Res 2021; 85:36-44. [PMID: 33390651 PMCID: PMC7747655] [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] [Received: 12/20/2019] [Accepted: 04/09/2020] [Indexed: 06/12/2023]
Abstract
Chronic cholangiohepatitis (CCH) is a common pathological condition in cats with a guarded prognosis and unknown etiology. Recently, in human medicine, there has been increased interest in enhancing liver defense mechanisms as an effective treatment strategy to control liver diseases that have a poor prognosis. Metallothionein (MT) is a ubiquitous protein, which has been widely researched for its role in liver defense through heavy metal detoxification, neutralization of reactive oxygen species, and liver regeneration. In this study, immunohistochemistry was used to evaluate the role of MT in CCH and hepatocellular regeneration in 34 cats histologically diagnosed with this condition by assessing the correlation between hepatocellular MT and Ki-67 (marker for cellular proliferation) expression with histological parameters of CCH, such as inflammation, fibrosis, and bile duct proliferation. Statistical analysis was performed using the Spearman-rank correlation test. A significant positive correlation was observed between inflammation and the number of MT-positive hepatocytes (r = 0.36, P = 0.03) and MT labelling intensity (r = 0.37, P = 0.03). In 16 of 34 cases (47%) MT labelling intensity was noted to be pronounced towards the centrilobular zone and very weak or absent towards the portal zone. The results suggest that MT is induced in the liver during chronic inflammatory conditions, which could be speculated as a host defensive mechanism to protect the liver from inflammation-mediated liver injury. Therapeutic interventions utilizing MT, therefore, may have a positive effect on cats with chronic cholangiohepatitis.
Collapse
Affiliation(s)
- Divya Jose
- Department of Veterinary Pathology (Jose, Allen, Al-Dissi) and Department of Veterinary Biomedical Sciences (Blakley), Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Andrew L Allen
- Department of Veterinary Pathology (Jose, Allen, Al-Dissi) and Department of Veterinary Biomedical Sciences (Blakley), Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Barry Blakley
- Department of Veterinary Pathology (Jose, Allen, Al-Dissi) and Department of Veterinary Biomedical Sciences (Blakley), Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ahmad Al-Dissi
- Department of Veterinary Pathology (Jose, Allen, Al-Dissi) and Department of Veterinary Biomedical Sciences (Blakley), Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| |
Collapse
|
4
|
Murugan K, Jose D, Sathiasekar A, Kumar D. Central giant cell granuloma in a 10-year-old pediatric patient - A rare entity in posterior mandible with CBCT findings: A case report. J Indian Acad Oral Med Radiol 2021. [DOI: 10.4103/jiaomr.jiaomr_206_20] [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: 02/25/2023] Open
|
5
|
Gupta U, Gupta Y, Jose D, Mani K, Jyotsna VP, Sharma G, Tandon N. Effectiveness of Yoga-based Exercise Program Compared to Usual Care, in Improving HbA1c in Individuals with Type 2 Diabetes: A Randomized Control Trial. Int J Yoga 2020; 13:233-238. [PMID: 33343154 PMCID: PMC7735507 DOI: 10.4103/ijoy.ijoy_33_20] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/01/2020] [Accepted: 06/26/2020] [Indexed: 11/04/2022] Open
Abstract
Background: This study was designed to evaluate the effectiveness of a yoga-based exercise program (YBEP) in improving glycemic control in people with type 2 diabetes mellitus. Materials and Methods: Patients on stable oral glucose-lowering agents for at least 3 months and HbA1c 7.5%–10% were randomized in 1:1 ratio. The primary outcome measure was the difference of change in mean HbA1c between groups. Results: The participants (n = 81) had mean (±standard deviation) age of 50.6 (±8.5) years and HbA1c of 8.5 ± 0.7% (68.97 ± 7.42 mmol/mol). The follow-up data were available in 96% (78/81) of participants. Of 40 participants, 25 (62.5%) attended ≥75% (≥10 out of 13) of the sessions in YBEP. On the intention to treat analysis, a favorable reduction (0.21% 95% confidence interval [−0.34, 0.75], P = 0.454) in HbA1c was seen in YBEP group as compared to usual care. The reduction in HbA1c by ≥0.5% was observed in 44.7% of participants in YBEP as compared to 37.5% in usual care arm, respectively. Those who attended ≥75% of the sessions had better HbA1c reduction of 0.3% in comparison to 0.1% reduction seen in those who attended <75% of the sessions. Conclusions: YBEP demonstrated a clinically relevant HbA1c reduction compared to usual care in participants who had attended at least 75% of the yoga sessions. The reduction in HbA1c by >0.5% in 44.7% in the yoga group, suggests, that it can be prescribed as an exercise to individuals who are unable to walk either due to limited joint mobility, adverse weather conditions, lack of space for walking, cultural or religious prohibitions for women for outdoor physical activity, and so on. CTRI registration no: CTRI/2017/05/008564.
Collapse
Affiliation(s)
- Uttio Gupta
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Yashdeep Gupta
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Divya Jose
- Department of Cardiology and All India Institute of Medical Sciences, New Delhi, India
| | - Kalaivani Mani
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Viveka P Jyotsna
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Gautam Sharma
- Department of Cardiology and All India Institute of Medical Sciences, New Delhi, India
| | - Nikhil Tandon
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
6
|
Gupta U, Gupta Y, Jose D, Mani K, Jyotsna VP, Sharma G, Tandon N. Effectiveness of a Video-Based Lifestyle Education Program Compared to Usual Care in Improving HbA1c and Other Metabolic Parameters in Individuals with Type 2 Diabetes: An Open-Label Parallel Arm Randomized Control Trial (RCT). Diabetes Ther 2020; 11:667-679. [PMID: 32006381 PMCID: PMC7048880 DOI: 10.1007/s13300-020-00769-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION This study was designed to investigate the effectiveness of a video-based lifestyle education program (VBLEP) in improving glycemic control in people with type 2 diabetes mellitus compared with usual care. METHODS Patients on stable oral glucose-lowering agents for at least 3 months and HbA1c 7.5-10% were randomized in a 1:1 ratio. Primary outcome measure was the difference in change in mean HbA1c between groups. RESULTS The participants (n = 81) had mean (± SD) age of 50.1 (± 9.4) years and HbA1c of 8.5 ± 0.7% (68.87 ± 7.56 mmol/mol). The follow-up data were available in 96% (78/81) of participants. Of 40 participants, 36 (90%) attended ≥ 75% (≥ 3 out of 4) of the sessions in the VBLEP. In the intention-to-treat analysis, a significant reduction [0.6% 95% CI (0.1, 1.1), p = 0.013] in HbA1c was seen in the VBLEP group compared with usual care. A ≥ 1% reduction in HbA1c was observed in 39.5% of participants in the VBLEP compared with 15% in the usual care arm. However, a ≥ 0.5% reduction in HbA1c was observed in 65.8% of participants in the VBLEP compared with 37.5% in the usual care arm (p = 0.012). There was a significant change in weight and body mass index in the VBLEP group compared with usual care. The participants who were employed, had a family history of diabetes, had no diabetes-related complications, and were in the VBLEP group had higher odds of having a favorable HbA1c reduction (≥ 0.5%, combined analysis both groups) from baseline. CONCLUSION The VBLEP demonstrated a significant and clinically relevant HbA1c reduction compared with usual care. A simple VBLEP, when delivered in an interactive manner, can aid in improving glycemic outcomes in the Indian population. TRIAL REGISTRATION CTRI/2017/05/008564.
Collapse
Affiliation(s)
- Uttio Gupta
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Yashdeep Gupta
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India.
| | - Divya Jose
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Kalaivani Mani
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Viveka P Jyotsna
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Gautam Sharma
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Nikhil Tandon
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India.
| |
Collapse
|
7
|
DILEEP K, Yousif Ali Salem H, Khalifa AlHadari A, Mohammad AlQedrah D, sam A, Vasudevan S, Jose D, Varghese S. SAT-239 VASCULAR ACESS OUTCOME-MULTIDISCIPLINARY APPROACH IN THE VASCULAR ACESS CARE CLINIC. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.254] [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: 10/24/2022] Open
|
8
|
Jose D, Mohandas A, Bright Singh I. A Non-Pathogenic Environmental Isolate of Pseudomonas aeruginosa MCCB 123 with Biotechnological Potential. ACTA ACUST UNITED AC 2018. [DOI: 10.20546/ijcmas.2018.701.363] [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: 11/23/2022]
|
9
|
Deshpande P, Minfray C, Dassenoy F, Le Mogne T, Jose D, Cobian M, Thiebaut B. Tribocatalytic behaviour of a TiO2 atmospheric plasma spray (APS) coating in the presence of the friction modifier MoDTC: a parametric study. RSC Adv 2018; 8:15056-15068. [PMID: 35541360 PMCID: PMC9079983 DOI: 10.1039/c8ra00234g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/13/2018] [Indexed: 01/02/2023] Open
Abstract
Recent engine design and emission trends have led to the commercial use of Atmospheric Plasma Spray (APS) coatings for cylinder liner applications like the TiO2 APS coating. It was shown in our previous work that this type of coating showed better friction results compared to steel lubricated with MoDTC. To further investigate this feature, a parametric study was carried out involving the effect of MoDTC concentration, test temperature, Hertzian contact pressure and the change of counterpart materials from steel balls to ceramic balls (Al2O3 and ZrO2). Ball-on-flat tribotests were carried out on a reciprocating (ball-on-flat) tribometer lubricated with base oil containing MoDTC. Results show that for all the test conditions used including the concentration of MoDTC, test temperature and the contact pressure, lower friction and wear is observed for the TiO2 APS coating compared to reference steel. To explain the low friction behavior, tribofilm compositions were investigated and it was observed that MoS2 is always formed in the case of TiO2 APS with no oxysulphide species. For the reference steel, MoOxSy species are mainly detected in the tribofilms. XPS analyses performed on TiO2 APS flats when the counterpart material was changed from steel balls to ceramic balls suggested the formation of MoS2 (Mo in +iv oxidation state) and Mo–C (Mo in +iv or +ii oxidation state) species with a negligible amount of MoO3 (Mo in +vi oxidation state). It was also shown that a significant amount of molybdenum atoms inside the tribofilm, originating from MoDTC (Mo in +v oxidation state) were reduced in the tribological contact. A mechanism for the decomposition of MoDTC on the basis of tribocatalytic behaviour hypothesized in our previous work was proposed and discussed. Tribocatalytic behaviour of TiO2 APS coatings in presence of MoDTC additive under boundary lubrication conditions – decomposition mechanism![]()
Collapse
Affiliation(s)
- P. Deshpande
- University Lyon
- Ecole Centrale de Lyon
- Laboratory of Tribology and System Dynamics
- ENISE
- ENTPE
| | - C. Minfray
- University Lyon
- Ecole Centrale de Lyon
- Laboratory of Tribology and System Dynamics
- ENISE
- ENTPE
| | - F. Dassenoy
- University Lyon
- Ecole Centrale de Lyon
- Laboratory of Tribology and System Dynamics
- ENISE
- ENTPE
| | - T. Le Mogne
- University Lyon
- Ecole Centrale de Lyon
- Laboratory of Tribology and System Dynamics
- ENISE
- ENTPE
| | - D. Jose
- University Lyon
- Ecole Centrale de Lyon
- Laboratory of Tribology and System Dynamics
- ENISE
- ENTPE
| | - M. Cobian
- University Lyon
- Ecole Centrale de Lyon
- Laboratory of Tribology and System Dynamics
- ENISE
- ENTPE
| | - B. Thiebaut
- TOTAL Marketing Services
- Centre de Recherche de Solaize
- France
| |
Collapse
|
10
|
Joseph A, Jose D, Kaur M. Psychological Wellbeing of Postnatal Mothers – A Survey. JPN 2015. [DOI: 10.21088/jpn.2277.9035.4115.3] [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: 11/30/2022] Open
|
11
|
Jose D, Jayesh P, Gopinath P, Mohandas A, Singh ISB. Potential application of beta-1, 3 glucanase from an environmental isolate of Pseudomonas aeruginosa MCCB 123 in fungal DNA extraction. Indian J Exp Biol 2014; 52:89-96. [PMID: 24617020] [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
Pseudomonas aeruginosa MCCB 123 was grown in a synthetic medium for beta-1,3 glucanase production. From the culture filtrate, beta-1,3 glucanase was purified with a molecular mass of 45 kDa. The enzyme was a metallozyme as its beta-1,3 glucanase activity got inhibited by the metal chelator EDTA. Optimum pH and temperature for beta-1,3 glucanase activity on laminarin was found to be 7 and 50 degrees C respectively. The MCCB 123 beta-1,3 glucanase was found to have good lytic action on a wide range of fungal isolates, and hence its application in fungal DNA extraction was evaluated. Beta-1,3 glucanase purified from the culture supernatant of P. aeruginosa MCCB 123 could be used for the extraction of fungal DNA without the addition of any other reagents generally used. Optimum pH and temperature of enzyme for fungal DNA extraction was found to be 7 and 65 degrees C respectively. This is the first report on beta-1,3 glucanase employed in fungal DNA extraction.
Collapse
|
12
|
Manjusha K, Jayesh P, Jose D, Sreelakshmi B, Priyaja P, Gopinath P, Saramma AV, Bright Singh IS. Alkaline protease from a non-toxigenic mangrove isolate of Vibrio sp. V26 with potential application in animal cell culture. Cytotechnology 2013; 65:199-212. [PMID: 22717659 PMCID: PMC3560880 DOI: 10.1007/s10616-012-9472-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 12/18/2011] [Accepted: 05/31/2012] [Indexed: 10/28/2022] Open
Abstract
Vibrio sp. V26 isolated from mangrove sediment showed 98 % similarity to 16S rRNA gene of Vibrio cholerae, V. mimicus, V. albensis and uncultured clones of Vibrio. Phenotypically also it resembled both V. cholerae and V. mimicus. Serogrouping, virulence associated gene profiling, hydrophobicity, and adherence pattern clearly pointed towards the non-toxigenic nature of Vibrio sp. V26. Purification and characterization of the enzyme revealed that it was moderately thermoactive, nonhemagglutinating alkaline metalloprotease with a molecular mass of 32 kDa. The application of alkaline protease from Vibrio sp. V26 (APV26) in sub culturing cell lines (HEp-2, HeLa and RTG-2) and dissociation of animal tissue (chick embryo) for primary cell culture were investigated. The time required for dissociation of cells as well as the viable cell yield obtained by while administering APV26 and trypsin were compared. Investigations revealed that the alkaline protease of Vibrio sp. V26 has the potential to be used in animal cell culture for subculturing cell lines and dissociation of animal tissue for the development of primary cell cultures, which has not been reported earlier among metalloproteases of Vibrios.
Collapse
Affiliation(s)
- K. Manjusha
- />Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - P. Jayesh
- />National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - Divya Jose
- />National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - B. Sreelakshmi
- />National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - P. Priyaja
- />National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - Prem Gopinath
- />National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - A. V. Saramma
- />Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| | - I. S. Bright Singh
- />National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Cochin, 682016 Kerala India
| |
Collapse
|
13
|
Kossow C, Jose D, Jaster R, Wolkenhauer O, Rateitschak K. Mathematical modelling unravels regulatory mechanisms of interferon-γ-induced STAT1 serine-phosphorylation and MUC4 expression in pancreatic cancer cells. IET Syst Biol 2012; 6:73-85. [PMID: 22757586 DOI: 10.1049/iet-syb.2011.0017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Interferon-γ (IFNγ)-mediated signal transduction via upregulation of signal transducer and activator of transcription (STAT) 1 leads to the expression of the mucin (MUC) 4 gene in pancreatic cancer cells. Upregulation of STAT1 may also implicate STAT1 tyrosine- or serine-phosphorylation. Experimental data indicate that reaction steps involved in IFN-γ induced serine-phosphorylation of STAT1 vary between cell types in contrast to conserved IFN-γ induced tyrosine-phosphorylation of STAT1. The above observations raise the following two questions: (i) How does IFNγ stimulation regulates serine-phosphorylation of STAT1 in the pancreatic cancer cell line CD18/HPAF? (ii) Which type of STAT1 acts as a transcription factor of MUC4? Our objective is to address these two questions by data-driven mathematical modelling. Simulation results of the parameterised ordinary differential equation models show that serine-phosphorylation of unphosphorylated STAT1 occurs in the cytoplasm. In contrast, serine-phosphorylation of tyrosine-phosphorylated STAT1 can take place in the cytoplasm or in the nucleus. In addition, our results propose that unphosphorylated or serine-phosphorylated STAT1 can act as transcription factors of MUC4, either alone by progressive binding to different sites in the promoter or both together.
Collapse
Affiliation(s)
- C Kossow
- Department of Systems Biology and Bioinformatics, University of Rostock, 18051 Rostock, Germany
| | | | | | | | | |
Collapse
|
14
|
Arora K, Jose D, Singh D, Gupta RS, Pardasani P, Pardasani RT. Stereoselective synthesis and antioxidant activity of azabicycloadducts derived from 9,10-phenanthrenequinone. Heteroatom Chem 2010. [DOI: 10.1002/hc.20562] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
15
|
Verma S, Arora K, Jose D, Joshi R, Pardasani P, Pardasani R. Regioselective Synthesis Of Azabicycloadducts Derived From Benzo[B]Thiophene -2,3 -Dione and Pipecolinic Acid. HETEROCYCL COMMUN 2009. [DOI: 10.1515/hc.2009.15.2.135] [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: 11/15/2022] Open
|
16
|
Garg A, Jose D, Bajan K. Crit Care 2004; 8:P322. [DOI: 10.1186/cc2789] [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: 11/10/2022] Open
|
17
|
Pilkington G, Juneja S, Tan L, Matthews J, Quirk J, Lee G, Ironside P, Cooper I, Jose D. Correlation of immunological surface antigens with survival in diffuse large cell lymphoma. Hematol Oncol 1993; 11:195-205. [PMID: 8144134 DOI: 10.1002/hon.2900110405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The prognostic value of immunophenotyping lymphomas with a panel of monoclonal antibodies (Mab) to various lymphoid antigens was assessed by studying 47 cases of diffuse large cell lymphoma. Cell suspensions were analysed by flow cytometry after labelling by indirect immunofluorescence. Thirty-eight cases were demonstrated to be of B cell and nine of T cell phenotype. Univariate analysis demonstrated that survival was significantly longer in patients expressing higher levels of HLA-DR (p = 0.01) and normal levels of CD8 (p = 0.04) but was not significantly associated with any of the other antigens. Our results support the possible value of HLA-DR in determining the prognosis of patients with diffuse large cell lymphoma.
Collapse
Affiliation(s)
- G Pilkington
- Department of Immunology, Peter MacCallum Cancer Institute, Melbourne, Australia
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Abstract
A case is described of a patient with chronic lymphocytic leukemia whose disease underwent blastic transformation. The transformed cells had the same immunoglobulin types (mu and kappa) as the original chronic lymphocytic leukemia cells. Immunoperoxidase staining technique demonstrated that, in the transformed cells of the bone marrow, much of the immunoglobulin was intracellular. In the peripheral blood the transformed cells had dense surface immunoglobulin and features of primitive T-cells. These findings suggest that transformation to an immunoblastic type of leukemia had occurred.
Collapse
|
19
|
Pilkington G, Jacobs D, Mackenzie S, Bradley R, Hunter S, Jose D. Rabbit antisera to cell lines RC2a and U937: antigens expressed on human leukaemic cells of myeloid, monocyte and T-lymphocyte lineage. Aust J Exp Biol Med Sci 1982; 60 (Pt 5):479-92. [PMID: 6819843 DOI: 10.1038/icb.1982.53] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Rabbit antisera have been produced to an acute myelomonocytic leukaemia (AMML)-derived cell line (RC2a) and a histiocytic lymphoma derived cell line (U937) having macrophage characteristics. The antisera were screened by complement-mediated cytotoxicity and immunofluorescence (cytofluorograph analysis) against separated leukaemic (122 patients plus 13 cell lines) and normal haematologic cell populations (60 preparations from 20 donors plus 10 B-lymphoblastoid cell lines). The sera were absorbed with pooled B-lymphoblastoid cell lines including the autologous B-lymphoblastoid cell line to RC2a (CESS-B) or alternatively with B-CLL and T-CLL cells. All leukaemic cell populations were confirmed using the markers SIg, E-rosette receptor, cALL antigen, alpha-naphthyl butyrate esterase and myeloperoxidase. Rabbit anti-RC2a (Adherent cells) (RARC2a(Ad) ) and rabbit anti-U937 (RAU937) recognised antigens common to immature myeloid monocyte and T-lymphocyte lineage but did not react by cytotoxicity, absorption or cytofluorographic analysis with cells of B-lymphocyte lineage (B-lymphoblastoid or B-CLL) and reacted only occasionally with cALL patients' cells (includes pre B phenotype). These sera reacted with peripheral blood monocytes but not with other mature blood leucocytes. RAU937 reacted with a major mononuclear population from normal marrow and with more differentiated myeloid leukaemia cells. RARC2a(Ad) and RAU937 detected overlapping subgroups of myeloid leukaemia (AMoL, AMML, AML and CML) patients and Null-ALL and T-ALL patients. These subgroups are now being examined for prognostic significance.
Collapse
|