1
|
Grewal US, Mudigonda GR, Davila-Chapa C, Brown T, Mahadevan R. Letter to the Editor: Shared Medical Appointments May Be Beneficial in Mitigating Guilt among Cancer Survivors. J Palliat Med 2022; 25:1328-1329. [PMID: 36066953 DOI: 10.1089/jpm.2022.0244] [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: 11/13/2022] Open
Affiliation(s)
- Udhayvir S Grewal
- Division of Internal Medicine, Department of Medicine, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Ghanshyam R Mudigonda
- Division of Internal Medicine, Department of Medicine, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Cesar Davila-Chapa
- Division of Internal Medicine, Department of Medicine, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Tyiesha Brown
- Division of Internal Medicine, Department of Medicine, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Rupa Mahadevan
- Division of Hematology and Oncology, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| |
Collapse
|
2
|
Grewal US, Brown T, Mudigonda GR, Davila-Chapa C, Thotamgari SR, Crooms C, Singh JS, Mahadevan R. Using Shared Medical Appointments for Delivering Patient-Centered Care to Cancer Survivors: A Feist-Weiller Cancer Center Pilot Study. J Patient Exp 2022; 9:23743735211069834. [PMID: 35071749 PMCID: PMC8772348 DOI: 10.1177/23743735211069834] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Shared medical appointments (SMAs) have shown promise in the care of patients with conditions such as diabetes; however, the impact of lifestyle medicine-based SMAs on the overall health status of cancer survivors remains poorly understood. Materials and Methods: This cross-sectional survey of patients was conducted to study the impact of a unique lifestyle medicine-based survivorship program on cancer survivors. Results: A total of 64 patients were telephonically contacted for the survey, out of which 39 (60.9%) patients responded. All patients (39 of 39, 100%) found the program to be helpful in some way; 26 patients (66.7%) found SMAs to be significantly helpful, while 13 patients (33.3%) found SMAs as only somewhat helpful. The majority noted feeling a great sense of support (35 of 39, 89.7%), followed by improvement in appetite (21 of 39, 54%) and improvement in pain (14 of 39, 35.9%). All patients reported at least some improvement in subjective well-being (SWB); patients who attended >3 appointments reported significant/very significant improvement in SWB (P = .03). Conclusion: SMAs offer promise in the effective delivery of lifestyle medicine-focused care to cancer survivors. Further prospective studies are needed to validate these findings.
Collapse
Affiliation(s)
- Udhayvir S Grewal
- Department of Internal Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Tyiesha Brown
- Department of Internal Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Ghanshyam R Mudigonda
- Department of Internal Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Cesar Davila-Chapa
- Department of Internal Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Sahith R Thotamgari
- Department of Internal Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Carol Crooms
- Feist-Weiller Cancer Center, Shreveport, LA, USA
| | - Jennifer S Singh
- Feist-Weiller Cancer Center, Shreveport, LA, USA
- Department of Hematology and Oncology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Rupa Mahadevan
- Feist-Weiller Cancer Center, Shreveport, LA, USA
- Department of Hematology and Oncology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| |
Collapse
|
3
|
Kapadia D, Dongre P, Mahadevan R. Strategies for mitigating the effects of a pandemic on Indian medical tourism. CM 2021. [DOI: 10.18137/cardiometry.2021.20.144150] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
India is a favorable destination for medical tourism because ofits quality healthcare services and affordable treatment costs. Itis a continuously growing industry across the globe. But wheneverany pandemic situation arises, it adversely affects the industry.Currently, COVID-19 has a severe negative impact onthe medical tourism sector. This paper discusses the effects of apandemic, critical issues, SWOT analysis, and components thatmitigate the adverse effects of pandemic diseases on medicaltourism in India. During this phase, it is crucial to encouragedomestic medical tourism for the sustainability of this sector. India’sheritage of ancient medicine promotion, along with modernmedicine can captivate the medical tourists. The destinationcountry requires meeting the expectations of tourists throughquality services. With India entering this unexpected downturnin this sector, destination country it must emphasize the slowand steady growth of medical tourism against the current andpotential future pandemics.
Collapse
|
4
|
Grewal U, Mudigonda G, Davila-Chapa C, Crooms C, Mahadevan R, Singh J. QIM21-081: Shared Medical Appointments for Cancer Survivors: A Feist Weiller Cancer Center Pilot Study. J Natl Compr Canc Netw 2021. [DOI: 10.6004/jnccn.2020.7779] [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: 11/17/2022]
|
5
|
Huyer LD, Mandla S, Wang Y, Campbell S, Yee B, Euler C, Lai BF, Bannerman D, Lin DSY, Montgomery M, Nemr K, Bender T, Epelman S, Mahadevan R, Radisic M. Macrophage immunomodulation through new polymers that recapitulate functional effects of itaconate as a power house of innate immunity. Adv Funct Mater 2021; 31:2003341. [PMID: 33708036 PMCID: PMC7942808 DOI: 10.1002/adfm.202003341] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Indexed: 05/12/2023]
Abstract
Itaconate (ITA) is an emerging powerhouse of innate immunity with therapeutic potential that is limited in its ability to be administered in a soluble form. We developed a library of polyester materials that incorporate ITA into polymer backbones resulting in materials with inherent immunoregulatory behavior. Harnessing hydrolytic degradation release from polyester backbones, ITA polymers resulted in the mechanism specific immunoregulatory properties on macrophage polarization in vitro. In a functional assay, the polymer-released ITA inhibited bacterial growth on acetate. Translation to an in vivo model of biomaterial associated inflammation, intraperitoneal injection of ITA polymers demonstrated a rapid resolution of inflammation in comparison to a control polymer silicone, demonstrating the value of sustained biomimetic presentation of ITA.
Collapse
Affiliation(s)
- L. Davenport Huyer
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - S. Mandla
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Y. Wang
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - S. Campbell
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - B. Yee
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - C. Euler
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - B. F. Lai
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - D. Bannerman
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - D. S. Y. Lin
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - M. Montgomery
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - K. Nemr
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - T. Bender
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - S. Epelman
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - R. Mahadevan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - M. Radisic
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| |
Collapse
|
6
|
Ring M, Cheung E, Mahadevan R, Folkens S, Edens N. Cooking Up Health: A Novel Culinary Medicine and Service Learning Elective for Health Professional Students. J Altern Complement Med 2019; 25:61-72. [DOI: 10.1089/acm.2018.0313] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Melinda Ring
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Osher Center for Integrative Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Elaine Cheung
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Osher Center for Integrative Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Rupa Mahadevan
- Osher Center for Integrative Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Department of Pediatrics, Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | | |
Collapse
|
7
|
Abstract
Integrative Medicine has been described as "healing oriented medicine that takes account of the whole person (body, mind, and spirit) including all aspects of lifestyle. It emphasizes therapeutic relationships and makes use of all appropriate therapies, both conventional and alternative." National surveys consistently report that approximately one-third of adults and 12% of children use complementary and integrative medicine approaches. Although there are barriers to primary care professionals engaging in discussions about lifestyle change and complementary and integrative medicine options, there is also great potential to impact patient well-being.
Collapse
Affiliation(s)
- Melinda Ring
- Departments of Medicine and Medical Social Sciences, Osher Center for Integrative Medicine, Northwestern University Feinberg School of Medicine, 150 East Huron Avenue, Suite 1100, Chicago, IL 60611, USA.
| | - Rupa Mahadevan
- Departments of Medicine and Medical Social Sciences, Osher Center for Integrative Medicine, Northwestern University Feinberg School of Medicine, 150 East Huron Avenue, Suite 1100, Chicago, IL 60611, USA
| |
Collapse
|
8
|
Victorson D, Beaumont JL, Mahadevan R, Grimone A, Burns V, Murry W, Gutierrez S, Schuette S, Brady C, Ring M. Acupuncture-Related Quality of Life Changes Using PROMIS Computer Adaptive Tests in a Pragmatic Trial with Oncology and General Integrative Medicine Patients: The Role of Baseline Acupuncture Expectations. J Altern Complement Med 2016; 22:778-787. [PMID: 27467506 DOI: 10.1089/acm.2015.0121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Acupuncture has been shown to alleviate symptoms and increase general well-being in different medical patient samples. A major challenge in acupuncture clinical research is the availability of comparable and standardized patient-reported outcome measurement (PRO) tools. OBJECTIVES This study used a pragmatic design to examine longitudinal changes in quality of life (QOL) in a medical patient sample following acupuncture using PROs from the National Institutes of Health's Patient Reported Outcomes Measurement Information System (PROMIS) initiative. It also examined the role of acupuncture expectancies, as well as patient and provider perceptions of acupuncture benefit. DESIGN Following informed consent, patients completed baseline QOL measures (T1) prior to their first acupuncture session. Subsequent assessments (up to 20) were completed immediately following ensuing acupuncture sessions. Patients completed assessments either on a touch-screen computer at the clinic or from their home computer. RESULTS Compared with acupuncture-naïve participants, those who received prior acupuncture treatment reported significantly higher anxiety, fatigue, sleep disturbance, and lower positive affect at baseline. By the second assessment, however, these differences became nonexistent. Participants who held greater baseline acupuncture expectations (e.g., their situation would improve a lot, they would have improved coping skills, their symptoms would disappear, their energy would increase) reported significantly higher fatigue, pain interference, and problems with physical functioning. Between T1 and T2, all participants reported significant improvements in anxiety, depression, and fatigue. Exploratory longitudinal models demonstrated significant linear improvements over time in anxiety (p = 0.006), depression (p = 0.007), pain interference (p < 0.001), and sleep disturbance (p = 0.004). No linear reduction over time was found with fatigue (p = 0.587), physical function (p = 0.654), or positive affect (p = 0.247). CONCLUSIONS Overall, PROMIS computer adaptive tests were able to assess domains of QOL briefly. Although pretreatment acupuncture expectations highlighted subgroup differences in outcomes at baseline, linear-growth models demonstrated the positive effects of acupuncture over time on anxiety, depression, pain interference, and sleep disturbance.
Collapse
Affiliation(s)
- David Victorson
- 1 Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine , Chicago, IL.,2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| | - Jennifer L Beaumont
- 1 Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine , Chicago, IL
| | - Rupa Mahadevan
- 3 Pediatric Residency Program, Advocate Children's Hospital , Park Ridge, IL
| | - Ania Grimone
- 2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| | - Virginia Burns
- 2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| | - Wendy Murry
- 2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| | - Sandra Gutierrez
- 1 Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine , Chicago, IL
| | - Stephanie Schuette
- 2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| | - Caitlin Brady
- 2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| | - Melinda Ring
- 2 Osher Center for Integrative Medicine at Northwestern Medicine , Northwestern Medical Group, Chicago, IL
| |
Collapse
|
9
|
Nayar S, Bhuminathan S, Mahadevan R. Combination restoration in full mouth rehabilitation. J Pharm Bioallied Sci 2015; 7:S288-90. [PMID: 26015735 PMCID: PMC4439695 DOI: 10.4103/0975-7406.155959] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 10/31/2014] [Accepted: 11/09/2014] [Indexed: 11/08/2022] Open
Abstract
Successful restoration of the dentition requires plenty of contemporary and conventional treatment techniques and planning and attachment retained partial dentures are one such kind of treatment modality in prosthodontics. Satisfactory restoration in a patient with a partially edentulous situation can be challenging especially when unilateral or bilateral posterior segment of teeth is missing. One such treatment modality is attachment-retained cast partial dentures. The purpose of this article is to provide an overview of a case with maxillary complete denture and opposing cast partial denture with precision attachment.
Collapse
Affiliation(s)
- Sanjna Nayar
- Department of Prsothodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| | - S Bhuminathan
- Department of Prsothodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| | - R Mahadevan
- Department of Prsothodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| |
Collapse
|
10
|
Nayar S, Bhuminathan S, Bhat WM, Mahadevan R. Relationship between occlusal plane and ala-tragus line in dentate individuals: A Clinical pilot study. J Pharm Bioallied Sci 2015; 7:S95-7. [PMID: 26015765 PMCID: PMC4439725 DOI: 10.4103/0975-7406.155822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 10/31/2014] [Accepted: 11/09/2014] [Indexed: 11/06/2022] Open
Abstract
Many methods have been used to establish the occlusal plane in complete denture prosthodontics. However, no single method seems to be fully accepted. Anteriorly, esthetic considerations help define the occlusal plane, and posteriorly the tongue, retromolar pad, and Stenson's duct are considered. Some dentists bisect the space between the residual ridges. The technique of using the ala-tragus line (Camper's line) to establish the occlusal plane is well documented. However, definitions of the ala-tragus line cause confusion, because the exact points of reference do not agree. For example, the glossary of prosthodontic terms states that the ala-tragus line runs from the inferior border of the ala of the nose to the superior border of the tragus of the ear while Spratley’ describes it as running from the center of the ala to the center of the tragus. This article concerns us the exact relationship between the occlusal plane and ala-tragus line in dentate individuals.
Collapse
Affiliation(s)
- Sanjna Nayar
- Department of Prosthodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
| | - S Bhuminathan
- Department of Prosthodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
| | - Wasim Manzoor Bhat
- Department of Prosthodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
| | - R Mahadevan
- Department of Prosthodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
| |
Collapse
|
11
|
Nayar S, Mahadevan R. A Paradigm shift in the concept for making dental impressions. J Pharm Bioallied Sci 2015; 7:S213-5. [PMID: 26015714 PMCID: PMC4439674 DOI: 10.4103/0975-7406.155910] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 10/31/2014] [Accepted: 11/09/2014] [Indexed: 11/05/2022] Open
Abstract
Digital dental impression is a revolutionary technological advancement that so surpasses the accuracy and efficiency of former techniques for obtaining replicas of prepared teeth for the purpose of fabricating restorations that its adoption by dentists is rapidly eclipsing the use of elastomeric impression materials. The ultimate goals of dentists dedicated to quality restorative dentistry are to make their treatment of patients as accurate, stressless, and efficient as possible. By elimination of the everyday problems described above, there is no question that the significant advantages of digital impressions will make intraoral digital scanning standard procedure in most dental offices within the next several years. Furthermore, digital impressions have proven to reduce remakes and returns, as well as increase overall efficiency. The patient also benefits by being provided a far more positive experience. Finally, through the use of digital impression making, it has been determined that laboratory products become more consistent and require less chair time at insertion.
Collapse
Affiliation(s)
- Sanjna Nayar
- Department of Prsothodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| | - R. Mahadevan
- Department of Prsothodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| |
Collapse
|
12
|
Mohsin S, Mahadevan R, Muraleedhara Kurup G. Free-radical-scavenging activity and antioxidant effect of ascophyllan from marine brown algae Padina tetrastromatica. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bionut.2013.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
13
|
Mohsin S, Kurup GM, Mahadevan R. Effect of ascophyllan from brown algae Padina tetrastromatica on inflammation and oxidative stress in carrageenan-induced rats. Inflammation 2013; 36:1268-78. [PMID: 23760559 DOI: 10.1007/s10753-013-9665-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 10/26/2022]
Abstract
Sulfated polysaccharide ascophyllan was isolated from the brown algae Padina tetrastromatica and purified by ion-exchange chromatography. Anti-inflammatory effect of ascophyllan fraction against carrageenan-induced paw edema in rats was studied. Paw edema in rats was induced by injecting 0.1 ml, 1 % carrageenan suspension in 0.9 % NaCl solution into the sub-plantar tissue of the right hind paw. Carrageenan caused a significant increase in the activity of inflammatory marker enzymes like lipoxygenases and cyclooxygenase in peripheral blood mononuclear cells and paw tissue and also increased the concentration of prostaglandin E2 (PGE2) and myeloperoxidase (MPO) in paw tissue. When compared to the reference drug diclofenac, ascophyllan fraction-3 (AF3) treatment significantly reduced the activities of anti-inflammatory enzymes, concentration of PGE2 and MPO. AF3 treatment decreased the mRNA level expression of TNF-α and IL-6. Concentration of thiobarbituric acid reactive substances was decreased. Activities of antioxidant enzymes and reduced glutathione level were increased on treatment with AF3. Histopathology of paw tissue showed decreased edema formation and cellular infiltration on supplementation with AF3. Thus the results demonstrated the potential beneficiary effect of ascophyllan fraction on carrageenan-treated rats.
Collapse
Affiliation(s)
- Sulaiman Mohsin
- Department of Biochemistry, University of Kerala, Kariavattom, Thiruvananthapuram, 695 581, India
| | | | | |
Collapse
|
14
|
Venugopal V, Mahadevan R. Disappearing ring in chest cavity. Ann Card Anaesth 2012; 15:163. [PMID: 22508212 DOI: 10.4103/0971-9784.95084] [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: 11/04/2022] Open
Affiliation(s)
- Vijish Venugopal
- Department of Cardiac Anaesthesia, Moulana Heart Foundation, Ooty Road, Perintalmanna, Kerala, Perintalmanna, India.
| | | |
Collapse
|
15
|
Zhao J, Scheibe TD, Mahadevan R. Model-based analysis of the role of biological, hydrological and geochemical factors affecting uranium bioremediation. Biotechnol Bioeng 2011; 108:1537-48. [DOI: 10.1002/bit.23096] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 01/20/2011] [Accepted: 01/24/2011] [Indexed: 11/09/2022]
|
16
|
Zhao J, Fang Y, Scheibe TD, Lovley DR, Mahadevan R. Modeling and sensitivity analysis of electron capacitance for Geobacter in sedimentary environments. J Contam Hydrol 2010; 112:30-44. [PMID: 19892431 DOI: 10.1016/j.jconhyd.2009.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Revised: 08/07/2009] [Accepted: 10/04/2009] [Indexed: 05/28/2023]
Abstract
In situ stimulation of the metabolic activity of Geobacter species through acetate amendment has been shown to be a promising bioremediation strategy to reduce and immobilize hexavalent uranium [U(VI)] as insoluble U(IV). Although Geobacter species are reducing U(VI), they primarily grow via Fe(III) reduction. Unfortunately, the biogeochemistry and the physiology of simultaneous reduction of multiple metals are still poorly understood. A detailed model is therefore required to better understand the pathways leading to U(VI) and Fe(III) reduction by Geobacter species. Based on recent experimental evidence of temporary electron capacitors in Geobacter we propose a novel kinetic model that physically distinguishes planktonic cells into electron-loaded and -unloaded states. Incorporation of an electron load-unload cycle into the model provides insight into U(VI) reduction efficiency, and elucidates the relationship between U(VI)- and Fe(III)-reducing activity and further explains the correlation of high U(VI) removal with high fractions of planktonic cells in subsurface environments. Global sensitivity analysis was used to determine the level of importance of geochemical and microbial processes controlling Geobacter growth and U(VI) reduction, suggesting that the electron load-unload cycle and the resulting repartition of the microbes between aqueous and attached phases are critical for U(VI) reduction. As compared with conventional Monod modeling approaches without inclusion of the electron capacitance, the new model attempts to incorporate a novel cellular mechanism that has a significant impact on the outcome of in situ bioremediation.
Collapse
Affiliation(s)
- Jiao Zhao
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Canada M5S 3E5
| | | | | | | | | |
Collapse
|
17
|
O'Hara R, Schröder CM, Mahadevan R, Schatzberg AF, Lindley S, Fox S, Weiner M, Kraemer HC, Noda A, Lin X, Gray HL, Hallmayer JF. Serotonin transporter polymorphism, memory and hippocampal volume in the elderly: association and interaction with cortisol. Mol Psychiatry 2007; 12:544-55. [PMID: 17353910 PMCID: PMC2084475 DOI: 10.1038/sj.mp.4001978] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The s allele variant of the serotonin transporter gene (5-HTT) has recently been observed to moderate the relationship of stress to depression and anxiety. To date no study has considered interactive effects of 5-HTT genotype, stress and hypothalamic-pituitary-adrenal (HPA) function on cognition in healthy, older adults, which may reflect developmental, functional or neurodegenerative effects of the serotonin transporter polymorphism. We investigated whether 5-HTT genotype interacts with cumulative life stress and HPA-axis measures of waking and diurnal cortisol slope to impact cognition in 154 non-depressed, older adults. Structural images of hippocampal volume were acquired on a subsample of 56 participants. The 5-HTT s allele was associated with both significantly lower delayed recall and higher waking cortisol levels. Presence of the s allele interacted with higher waking cortisol to negatively impact memory. We also observed a significant interaction of higher waking cortisol and the s allele on lower hippocampal volume. Smaller hippocampi and higher cortisol were associated with lower delayed recall only in s allele carriers. No impact or interactions of cumulative life stress with 5-HTT or cortisol were observed. This is the first investigation to identify an association of the 5-HTT s allele with poorer memory function in older adults. The interactive effects of the s allele and waking cortisol levels on reduced hippocampal volume and lower memory suggest that the negative effect of the serotonin polymorphism on memory is mediated by the HPA axis. Further, given the significant association of the s allele with higher waking cortisol in our investigation, future studies may be needed to evaluate the impact of the serotonin transporter polymorphism on any neuropsychiatric or behavioral outcome which is influenced by HPA axis function in older adults.
Collapse
Affiliation(s)
- R O'Hara
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford University, Stanford, CA 94305-5550, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Mahadevan R, Bond DR, Butler JE, Esteve-Nuñez A, Coppi MV, Palsson BO, Schilling CH, Lovley DR. Characterization of metabolism in the Fe(III)-reducing organism Geobacter sulfurreducens by constraint-based modeling. Appl Environ Microbiol 2006; 72:1558-68. [PMID: 16461711 PMCID: PMC1392927 DOI: 10.1128/aem.72.2.1558-1568.2006] [Citation(s) in RCA: 246] [Impact Index Per Article: 13.7] [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: 11/20/2022] Open
Abstract
Geobacter sulfurreducens is a well-studied representative of the Geobacteraceae, which play a critical role in organic matter oxidation coupled to Fe(III) reduction, bioremediation of groundwater contaminated with organics or metals, and electricity production from waste organic matter. In order to investigate G. sulfurreducens central metabolism and electron transport, a metabolic model which integrated genome-based predictions with available genetic and physiological data was developed via the constraint-based modeling approach. Evaluation of the rates of proton production and consumption in the extracellular and cytoplasmic compartments revealed that energy conservation with extracellular electron acceptors, such as Fe(III), was limited relative to that associated with intracellular acceptors. This limitation was attributed to lack of cytoplasmic proton consumption during reduction of extracellular electron acceptors. Model-based analysis of the metabolic cost of producing an extracellular electron shuttle to promote electron transfer to insoluble Fe(III) oxides demonstrated why Geobacter species, which do not produce shuttles, have an energetic advantage over shuttle-producing Fe(III) reducers in subsurface environments. In silico analysis also revealed that the metabolic network of G. sulfurreducens could synthesize amino acids more efficiently than that of Escherichia coli due to the presence of a pyruvate-ferredoxin oxidoreductase, which catalyzes synthesis of pyruvate from acetate and carbon dioxide in a single step. In silico phenotypic analysis of deletion mutants demonstrated the capability of the model to explore the flexibility of G. sulfurreducens central metabolism and correctly predict mutant phenotypes. These results demonstrate that iterative modeling coupled with experimentation can accelerate the understanding of the physiology of poorly studied but environmentally relevant organisms and may help optimize their practical applications.
Collapse
Affiliation(s)
- R Mahadevan
- Genomatica, 5405 Morehouse Dr., Ste. 210, San Diego, CA 92121, USA.
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Abstract
Biological data from high-throughput technologies describing the network components (genes, proteins, metabolites) and their associated interactions have driven the reconstruction and study of structural (topological) properties of large-scale biological networks. In this article, we address the relation of the functional and structural properties by using extensively experimentally validated genome-scale metabolic network models to compute observable functional states of a microorganism and compare the "structure versus function" attributes of metabolic networks. It is observed that, functionally speaking, the essentiality of reactions in a node is not correlated with node connectivity as structural analyses of other biological networks have suggested. These findings are illustrated with the analysis of the genome-scale biochemical networks of three species with distinct modes of metabolism. These results also suggest fundamental differences among different biological networks arising out of their representation and functional constraints.
Collapse
Affiliation(s)
- R. Mahadevan
- Genomatica Inc., San Diego, California 92121; and Department of Bioengineering, University of California, La Jolla, California 92093
| | - B. O. Palsson
- Genomatica Inc., San Diego, California 92121; and Department of Bioengineering, University of California, La Jolla, California 92093
| |
Collapse
|
20
|
Abstract
Genome-scale constraint-based models of several organisms have now been constructed and are being used for model driven research. A key issue that may arise in the use of such models is the existence of alternate optimal solutions wherein the same maximal objective (e.g., growth rate) can be achieved through different flux distributions. Herein, we investigate the effects that alternate optimal solutions may have on the predicted range of flux values calculated using currently practiced linear (LP) and quadratic programming (QP) methods. An efficient LP-based strategy is described to calculate the range of flux variability that can be present in order to achieve optimal as well as suboptimal objective states. Sample results are provided for growth predictions of E. coli using glucose, acetate, and lactate as carbon substrates. These results demonstrate the extent of flux variability to be highly dependent on environmental conditions and network composition. In addition we examined the impact of alternate optima for growth under gene knockout conditions as calculated using QP-based methods. It was observed that calculations using QP-based methods can show significant variation in growth rate if the flux variability among alternate optima is high. The underlying biological significance and general source of such flux variability is further investigated through the identification of redundancies in the network (equivalent reaction sets) that lead to alternate solutions. Collectively, these results illustrate the variability inherent in metabolic flux distributions and the possible implications of this heterogeneity for constraint-based modeling approaches. These methods also provide an efficient and robust method to calculate the range of flux distributions that can be derived from quantitative fermentation data.
Collapse
Affiliation(s)
- R Mahadevan
- Genomatica, Inc., Bioprocessing Division, 5405 Morehouse Drive, Suite 210, San Diego, CA 92121, USA.
| | | |
Collapse
|
21
|
Mahadevan R, Karthikeyan K, Bhat BV, Thappa DM. Restrictive dermopathy - a case report. Indian Pediatr 2002; 39:1149-52. [PMID: 12522278] [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] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- R Mahadevan
- Department of Pediatrics, JIPMER, Pondicherry, India
| | | | | | | |
Collapse
|
22
|
Mahadevan R, Lee D, Sakurai H, Zachariah MR. Measurement of Condensed-Phase Reaction Kinetics in the Aerosol Phase Using Single Particle Mass Spectrometry. J Phys Chem A 2002. [DOI: 10.1021/jp025784c] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [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)
- R. Mahadevan
- Center for NanoEnergetics Research, Departments of Mechanical Engineering and Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - D. Lee
- Center for NanoEnergetics Research, Departments of Mechanical Engineering and Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - H. Sakurai
- Center for NanoEnergetics Research, Departments of Mechanical Engineering and Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - M. R. Zachariah
- Center for NanoEnergetics Research, Departments of Mechanical Engineering and Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| |
Collapse
|
23
|
|
24
|
Tejani A, Dobias B, Mahadevan R. Osmolar relationships in infantile dehydration. Am J Dis Child 1981; 135:1000-5. [PMID: 7294002 DOI: 10.1001/archpedi.1981.02130350004003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We studied serum osmolality in 167 consecutive infants admitted for gastroenteritis with 5% or more dehydration. Osmolality was determined by the freezing-point method in a 0.2-mL sample of serum immediately on admission. Forty-one patients (24.6%) had hypo-osmolar dehydration, with a mean osmolality of 257 mOsm/kg (range, 234 to 270 mOsm/kg). Eleven patients (6.5%) had hyperosmolar dehydration, with a mean osmolality of 329 mOsm/kg (range, 312 to 369 mOsm/kg). Simultaneous serum and CSF osmolalities were determined in 14 patients with hypo-osmolar and eight with hyperosmolar dehydration. In patients with hyperosmolar dehydration, serum osmolality correlated well with CSF osmolality, but a poor correlation was seen between serum and CSF sodium levels. Convulsions occurred in two patients in whom the CSF osmolality was greater than the serum osmolality by more than 10 mOsm/kg. Convulsions also occurred in two patients with hypo-osmolar dehydration in whom the CSF osmolality was lower than the serum osmolality by more than 13 mOsm/kg.
Collapse
|
25
|
Abstract
We have studied 50 Caucasoid children under 7 years of age with Haemophilus influenzae b disease. Half of the patients (Group A) had invasive disease shown by positive blood and/or spinal fluid culture. The other half (Group B) had noninvasive disease characterized by fever, nasopharyngitis, negative blood culture, and positive throat culture. Age, number of other siblings under 12 years old in the family, immune response, antibody production and genetic markers were compared in the two groups. Significant difference between the two groups was only seen in their genetic markers. HLA-B12 was present in 52% of Group A patients as opposed to 16% in Group B patients (P less than .01). HLA-Bw40 was present in 24% of group B patients and absent in all Group A patients (P less than .01). These findings would suggest that susceptibility and resistance towards developing invasive type b disease may be genetically determined.
Collapse
|
26
|
|
27
|
Tejani A, Dobias B, Nangia BS, Mahadevan R. Growth, health, and development after neonatal gut surgery: a long-term follow-up. Pediatrics 1978; 61:685-93. [PMID: 96416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Growth and development data on 19 children who survived gut surgery in the immediate newborn period are presented. The follow-up period ranges from seven months to seven years six months, with a mean of three years eight months. Neonates who undergo gut resection are at a higher risk for delay in height and weight gain compared to those who have gut surgery without resection. Six of the 12 children who had gut resection showed delay in height gain and seven showed delay in weight gain. Of the seven children who had gut surgery but no resection, only one showed delay in height and weight gain after the age of 1 year. An individual approach and careful serial follow-ups are recommended for all children undergoing gut resection in the newborn period. Of the eight children who had psychometric testing in the gut-resected group, only two are normal. Three of the four older children in this group show signs of perceptuomotor defects, suggesting the need for subtesting such children at about 6 years of age so that remedial help, if necessary, may be provided when formal schooling begins.
Collapse
|
28
|
|
29
|
|
30
|
Mahadevan R. Cardiothoracic surgery at Stanley Hospital during 1948-53. J Indian Med Assoc 1975; 65:160-3. [PMID: 1214075] [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: 12/26/2022]
|
31
|
Mahadevan R. Pancreatic Lithiasis. West J Med 1961. [DOI: 10.1136/bmj.2.5248.381-b] [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: 11/04/2022]
|
32
|
Mahadevan R. Pancreatic Cyst Treated by Primary Anastomosis to the Stomach. Ind Med Gaz 1943; 78:278-281. [PMID: 29012254 PMCID: PMC5158519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- R. Mahadevan
- Professor of Operative Surgery, Andhra Medical College, and Surgeon, King George Hospital, Vizagapatam
| |
Collapse
|
33
|
Bradfield EWC, Barnard TW, Mahadevan R. Compression Fractures of the Spine. Ind Med Gaz 1928; 63:302-303. [PMID: 29011666 PMCID: PMC5235807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|