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Search Results: 1 - 10 of 139729 matches for " Surendra K. Bansal "
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Changes in Adenosine Metabolism in Asthma. A Study on Adenosine, 5'-NT, Adenosine Deaminase and Its Isoenzyme Levels in Serum, Lymphocytes and Erythrocytes  [PDF]
Jitender Sharma, Bala K. Menon, Vannan K. Vijayan, Surendra K. Bansal
Open Journal of Respiratory Diseases (OJRD) , 2015, DOI: 10.4236/ojrd.2015.52004
Abstract: Background: Adenosine deaminase (ADA) and 5'-nucleotidase (5'-NT) play a crucial role in adenosine metabolism in healthy individuals. Adenosine is an inflammatory mediator of asthma. Changes in adenosine metabolism and role of ADA and 5'-NT in regulating adenosine level in asthmatics and correlation of these changes with severity of asthma are not clearly understood. Methods: In this study, we screened 5217 patients, of which 2416 were diagnosed with asthma. Further, of 2416 asthmatics, only 45 patients who strictly fulfilled the selection criteria were enrolled in the study. The patients were classified into mild, moderate and severe persistent groups; each group consisted of fifteen patients. Fifteen healthy subjects served as controls. Adenosine levels and activities of 5'-NT, total ADA, ADA1 and ADA2 in serum, lymphocytes and erythrocytes were determined. The data were analysed statistically and p < 0.05 was considered significant. Results: In asthma, adenosine levels in serum, lymphocytes and erythrocytes were found to be raised significantly. A significant reciprocal correlation existed between adenosine levels in serum, lymphocytes and erythrocytes of asthmatics and FEV1%. The 5'-nucleotidase activity in serum and lymphocytes was raised in moderate and severe persistent groups and an inverse correlation existed between 5'-nucleotidase activity and FEV1% whereas in erythrocytes it was raised only in severe persistent group and FEV1% had no correlation with the 5'-nucleotidase activity. The activities of total ADA, ADA1 and ADA2 were decreased in serum and lymphocytes of moderate and severe persistent asthmatics and a positive correlation existed between total ADA and FEV1%. In erythrocytes, total ADA activity increased in mild persistent group but remained unchanged in moderate and severe persistent groups. Conclusion: The present study suggests that adenosine levels tend to increase in serum, lymphocytes and erythrocytes with the severity of bronchial asthma. The balance between ADA and 5'-NT determines the levels of adenosine in serum and lymphocytes which may result in pathogenesis of asthma, or vice versa.
Critical Role of Protein Kinase C (PKC) in the Onset of Airway Hypersensitivity in Ova-Sensitized Guinea Pig Model of Asthma  [PDF]
Rakesh Kumar Mishra, Ritu Kulshrestha, Sunil Kumar Chhabra, Satish K. Srivastav, Surendra Kumar Bansal
Open Journal of Respiratory Diseases (OJRD) , 2014, DOI: 10.4236/ojrd.2014.41001
Abstract:
Background and Objectives: Protein kinase C (PKC) activation plays an important role in activation of T-lymphocytes in asthma. Airway hypersensitivity is one of the main characteristic features of asthma, the mechanism of onset of which is not clearly understood. Therefore, the objective was to elucidate the role of PKC in etiopathogenesis of airway hypersensitivity in asthma. Methods: Male guinea pigs (n = 30) were sensitized with ovalbumin and day of initial allergen-specific immune response determined by intradermal test, airway hypersensitivity, BALF cytology and lung histopathology. Total PKC activity, PKC isoenzymes and phosphoinositides were assessed in airway smooth muscles (ASM) and peripheral blood lymphocytes. Results: Intradermal test revealed that day 9 was the earliest time of allergen-specific response and onset of airway hypersensitivity to ovalbumin. It was associated with significant increase in total and differential (lymphocytes and eosinophils) BALF counts and grade I peribronchiolar chronic lymphocytic inflammation in lung. On day 14, grade II infiltration of lymphocytes and eosinophils with onset ofstructural remodelingofproximal and distal airways was seen. Total PKC activity, expression of PKCα, PKCε and phosphoinositides increased significantly in ASM and lymphocytes on day 9 and were maximum on day 14. There was no change in PKC-τ expression. Conclusions: Activation of PKC, particularly PKCα and PKCε, mediated signal transduction pathway plays a critical role in lymphocyte infiltration and onset of airway hypersensitivity, airway remodeling and asthma pathophysiology. The present study is the first one on the mechanism of the etiopathogenesis of the disease, which shows a direct evidence of the role of PKC mediated pathway in the initiation and onset of airway
The biology of cataract. The Hyderabad cataract research group
Balasubramanian D,Bansal Aashish,Basti Surendra,Bhatt K
Indian Journal of Ophthalmology , 1993,
Abstract:
The Dispersion Characteristics of a One Dimensional Plasma Photonic Crystal Having Inhomogeneous Plasma Density Profiles  [PDF]
Surendra Prasad, Vivek Singh, A. K. Singh
Optics and Photonics Journal (OPJ) , 2012, DOI: 10.4236/opj.2012.223034
Abstract: The dispersion characteristics of binary 1D-PPCs having inhomogeneous plasma in the unit cell are studied. Using the transfer matrix method the required dispersion relations are obtained. Here the linear and exponential plasma density profiles are considered and compared with the homogeneous plasma having uniform density profile. It is observed that the inhomogeneity in plasma layer highly affect dispersion curves. By comparing the dispersion curves obtained in all considered cases, it is found that the widths of band gaps and phase velocities are always larger for exponential density profile than the linear uniform density profiles in the considered frequency range.
Primer on pediatric intracranial ependymomas
Bansal K
Journal of Pediatric Neurosciences , 2006,
Abstract: Aims and Objectives: To review the clinical features and current understanding of the biology and management of pediatric ependymoma, critically analysing the different treatment modalities. Materials and Methods: The MEDLINE database, bibliographies of selected articles, and current English-language texts on the subject were reviewed. A Pubmed search was made with keywords pediatric, intracranial, ependymoma, surgery, chemotherapy, and radiotherapy. Most recent articles and also significant older articles having all above said words were selected and their results were compared in detail. Results: Almost all articles stress the complete or near total resection of the tumor at first surgery followed by radiotherapy in patients older than 3 years of age and chemotherapy in younger children. Conformal radiation therapy (CRT) is a technique which has promising results. Conclusion: Local tumor control is single most important prognostic factor. This is best achieved through gross total tumor resection wherever possible. Radiotherapy should be offered to all patients (>3-years age) with focused dose (CRT) to tumor bed. Chemotherapy with the current agents does not appear to hold much promise. However, it may be useful in the context of providing the surgeon with an opportunity to do further surgery on a tumor that is less vascularized.
Insights into the invasion biology of Plasmodium vivax
Surendra K. Prajapati
Frontiers in Cellular and Infection Microbiology , 2013, DOI: 10.3389/fcimb.2013.00008
Abstract:
Economic Analysis of a Large UASB Reactor Producing Biogas from Baggase Wash Water  [PDF]
V. K. Jain, Surinder S. Sambi, Surendra Kumar,   Shashi
Journal of Sustainable Bioenergy Systems (JSBS) , 2014, DOI: 10.4236/jsbs.2014.41007
Abstract:

This paper concerns with the treatment of bagasse wash water, which is generated after washing the stored bagasse before its use in the paper manufacture. The bagasse wash water, treated earlier in open lagoons, is now treated by the anaerobic process using UASB reactor. This study, based upon an operating unit, shows that the UASB reactor reduces COD of wash water by 85% - 90%, and results in significant emission reductions. Economic analysis carried out by using financial indicators such as DSCR, Payback period and IRR reveals very attractive rate of returns and thus, greatly reduces the risks in financing such projects by the financial institutions.

Improving Strawberry Irrigation with Micro-Sprinklers and Their Impact on Pest Management  [PDF]
Surendra K. Dara, Samuel Sandoval-Solis, David Peck
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.712078
Abstract:
Overhead aluminum sprinklers, which are used during the early stages of strawberry crop development to establish transplants and to leach out salts from the root zone, deliver significant volumes of water. Micro-sprinklers, which are typically used in orchard crops, were evaluated in a commercial strawberry field in California as an alternative to conventional aluminum sprinklers to conserve water without any negative impact on yields. In addition to the water consumption, data were collected from multiple plots within each treatment to determine the impact on plant growth, disease incidence, and seasonal yield. Micro-sprinklers used 32% less water than aluminum sprinklers during a three-week period without affecting fruit yield. They also appeared to lessen the severity of powdery mildew and botrytis fruit rot. This is the first study reporting the use of micro-sprinkler system, which can be a good alternative to the aluminum sprinklers to conserve irrigation water.
Impact of Entomopathogenic Fungi on the Growth, Development, and Health of Cabbage Growing under Water Stress  [PDF]
Surendra K. Dara, Sumanth S. R. Dara, Suchitra S. Dara
American Journal of Plant Sciences (AJPS) , 2017, DOI: 10.4236/ajps.2017.86081
Abstract: Entomopathogenic fungi such as Beauveria bassiana, Isaria fumosorosea, and Metarhizium brunneum are commonly used in the form of biopesticides to manage various arthropod pests. These fungi also form endophytic and mycorrhiza-like relationships with plants. This study aimed at evaluating the impact of three entomopathogenic fungi on the growth, development, and health of cabbage plants grown under artificial lighting with limited water. Beauveria bassiana had a positive influence on the survival, growth, health, length, and dry weight of cabbage. Other fungi also had a positive impact on some of the measured parameters. Other beneficial bacteria and mycorrhizae were also compared with the entomopathogenic fungi. This is the first report evaluating the non-entomopathogenic role of three entomopathogenic fungi on cabbage plants.
Social Empowerment Of Sheduled Caste Women
Surendra.K,Ramadevi .K
Golden Research Thoughts , 2012, DOI: 10.9780/22315063
Abstract: The Social Empowerment of Women includes equal access to Education, Health, Environment, Shelter, Nutrition, etc. Equal access to education for women and girls will be ensured. Special measures will be taken to eliminate discrimination, universalize education, eradicate illiteracy, create a gender-sensitive educational system, increase enrolment and retention rates of girls and improve the quality of education to facilitate life-long learning as well as development ofoccupation/vocation/technical skills by women. Reducing the gender gap in secondary and higher education would be a focus area
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