Bārāsat, India
Bārāsat, India

Time filter

Source Type

Roy P.K.,Jadavpur University | Mondal J.,Barasat College
Engineering Letters | Year: 2010

Research in the infection and recovery, based on mathematical understanding is aimed at developing how the immune system protects against infectious diseases, with a major focus on host-pathogen interactions [1]. In recent years greatest challenges in front of humanity is learning how the immune response protects against variety of breathing and emerging infectious disease. A lot of theoretical and experimental investigations of natural selections in host-pathogen system been explored and it has been established that vaccination is the most cost effective public health tool in human history [2]. In this research articles we attempt to offers an opportunity to examine the mathematical relationship that forming a model between host and pathogen as in biology and manifests the time rate of change of these species for better understanding of the recovery of the disease. On that outlook a recovery rate of the infected host to that of susceptible host is incorporated in our proposed mathematical model. Then we introduce a discrete time delay to the model to describe the time requirement for recovery from infected host to susceptible host by using various drugs or vaccinations. Again we use optimal control that is characterized in terms of the optimality of the system, to achieve improved quality of treatment. The model is analyzed theoretically and numerically. Numerical solution of the model is in conformity with those obtained theoretically. An effort is made to relate the model to prototype biological system by exploring a probable disease free parametric region. We also studied the effect of time delay on the stability of the infected equilibrium and optimal control process which can reduce the infected host populations.


Sanyal M.K.,Indian Association for The Cultivation of Science | Sanyal M.K.,Barasat College | Biswas B.,Indian Association for The Cultivation of Science | Chowdhury A.,Indian Association for The Cultivation of Science | And 2 more authors.
Journal of Nanoscience and Nanotechnology | Year: 2016

Silver nanoparticles were prepared by microwave assisted method using silver nitrate as precursor in the presence of some ferrocene derivatives. The formation of the silver nanoparticles was monitored using UV-Vis spectroscopy. The UV-Vis spectroscopy revealed the formation of silver nanoparticles by exhibiting typical surface plasmon absorption band. The position of plasmon band (406-429 nm) was observed to depend on the nature of a particular ferrocene derivative used. TEM images indicated that the nanoparticles were spherical in shape and well-dispersed. Quantum dots (3.2 nm) were prepared by using ferrocenecarboxylic acid. The surface plasmon absorption band has shown red shift with increasing concentration of ferrocene derivative. For different duration of microwave heating time, intensity of absorption spectra in general was found to increase except in presence of ferrocene carbaldehyde where it decreased. Time-dependent spectra have indicated almost stable position of the surface plasmon band with increasing time of observation confirming that the as prepared silver nanoparticles did not aggregate with lapse of time. Copyright © 2016 American Scientific Publishers All rights reserved.


Chatterjee A.,Barasat College | Mukherjee G.,Barasat Cancer Research and Welfare Center
American Journal of Biochemistry and Molecular Biology | Year: 2013

Radiation oncology is a widely accepted subject in all over the world for the treatment of malignancy. To study the innate as well as humoral immune response before and after radiation therapy in patients and also to estimate the level of tissue damage in them the present study was performed. The extent of tissue damage was determined by measuring the C-reactive protein and immunologic defense was estimated by measuring complement C3 for innate resistance and immunoglobulin IgG for the humoral response. The complement C3, IgG and C-reactive protein levels of cancer patients were significantly higher than the normal level. More increase in serum C-reactive protein level in every patient after radiotherapy was observed. In majority of the cases decrease of C3 and IgG level was estimated after prolonged radiation treatment. This indicated that radiation therapy, despite being a successful treatment for cancer, causes massive tissue damage; and cellular as well as humoral immunity remains at a low level after radiotherapy. Age is a crucial factor to tolerate such prolonged therapy treatment. Prolonged application of radiotherapy may also cause side effects on normal immune system as they are already in immune deficient state due to the life threatening neoplastic disease. © 2013 Academic Journals Inc.


Chatterjee A.,Barasat Cancer Research and Welfare Center | Chatterjee A.,Barasat College | Mukherjee G.,Barasat Cancer Research and Welfare Center
Asian Journal of Microbiology, Biotechnology and Environmental Sciences | Year: 2011

Carcinoma breast was the most prevalent malignant condition among women world-wide. Present investigation on the incidence pattern of breast cancer in rural population of West Bengal revealed that among 3219 malignant cases 39.05% showed breast carcinoma including 99.20% females and 0.79% males. Cancer frequency was moderate during 2004 to 2006, but it increased drastically from 2007 and reached maximum peak (28.00%) in 2009. Carcinoma breast was most prevalent in group O (32.86%) and in particularly middle age grcup (39.46% in 31-40 years age). A PCR based molecular approach was used to identify the mutation of BRCA2 genes and in very few cases (0.8%) BRCA2 999del5 mutation was detected. © Global Science Publications.


Roy P.K.,Jadavpur University | Mondal J.,Barasat College | Chatterjee S.,Immunology Group
Lecture Notes in Electrical Engineering | Year: 2011

Two model systems are proposed and analyzed. In the first system the disease transmission in the population is considered to be purely horizontal, while in the second system the transmission is considered to be mixed, i.e., both horizontal and vertical transmissions are present in the system. Analytically both the systems are analyzed separately and then numerical simulations are performed to observe the effect of disease transmission in disease dynamics. Our results showed that the presence of vertical transmission along with the horizontal transmission increases the virulence of the pathogens. © 2011 Springer Science+Business Media B.V.


Chatterjee A.,Barasat College
Pakistan Journal of Biological Sciences | Year: 2013

The assessment of severity with chronological development of disease of mesta (Hibiscus cannabinus, cv. HC-583) on a particular diseased plant was studied. Based on the symptomatology and intensity of diseases caused by Begomovirus an empirical formula was developed. A methodology for assessing the disease intensity of yellow vein mosaic disease of mesta grown under natural field condition was proposed and it was validated by comparing with infected plants grown under field as well as glasshouse conditions. Quantitative assessment of the disease indicated that the disease index value at different stages of pathogenesis varied from 1.82 to 49.44 under field condition whereas the same varied from 2.78 to 50.83 under glasshouse condition. Mortality of infected leaves was noticed when the index value reached maximum. With the present methodology scoring of gradual development of disease has become possible for a particular plant and even for an individual leaf of a particular cultivar. © 2013 Asian Network for Scientific Information.


Chatterjee A.,Barasat College
Journal of Medical Sciences (Faisalabad) | Year: 2013

Oxidative stress injury induced lipid peroxidation and the impairment of the antioxidant system has a potential role in the pathogenesis of many diseases. Free radicals in form of oxidative damage causes fatal diseases and oxyradical-induced cytotoxicity arises from both chronic and acute increases in reactive oxygen species, which give rise to subsequent lipid peroxidation. Antioxidants act as free radical scavengers and hence prevent and repair damage done by the free radicals. The present investigation revealed that dance, as a form of physical activity, have a significant contribution to the healthy-living agenda. In comparison with non-dancers, due to prolonged practice of dance, the dancers also show high levels of antioxidants with low level of LPP. The decreased levels of antioxidant and increased levels of LPP indicate that due to lack of physical exercise the non-dancers may have chance of higher incidences of infections or immune complex diseases. In case of dancers, as a complete exercise, dance plays an important role in immunity as an early defence system against infections and has a potential role in oxidative stress induced lipid peroxidation and the impairment of the anti oxidant system.


Chatterjee A.,Barasat College
International Journal of Osteoporosis and Metabolic Disorders | Year: 2014

Osteoporosis, characterized by low Bone Mineral Density (BMD) and micro-architectural deterioration of bone tissues is one of the major public health problem and is also increasing in developing world. Osteoporotic fracture entails high health care costs, frequently associated with loss of quality of life with an increased mortality risk. Physical activity has beneficial effects on the skeleton by contributing significantly to attainment of peak bone mass. In this cross-sectional study, a total of 26 volunteers (8 male and 18 female) were enrolled to understand of BMD profile, using Furuno Ultrasound Bone Densitometer CM 200, where dance movements is admitted as a form of physical activity. Controls (n = 25) were participants frequency matched to cases by age, sex, similar lifestyle and food habit except they do not practice dance movements. Results revealed that physical activity in regular manner showed higher bone strength. The BMD, as judged by T-scores were under normal value (-1.0) in cases but the value was lower (-1.2) in control group. Beside 16% of control participants showed presence of osteopenia and in 4% case osteoporosis. This result supports the fact that the physical exercise has a potential to increase the health status of any age group by eliciting positive changes in certain aspects of physical fitness and healthy wellbeing. The frequency of decreased value of BMD in controls with increasing age significantly constitutes a high-risk group for osteoporosis and future fractures. © 2014 Asian Network for Scientific Information.


PubMed | Barasat College
Type: Comparative Study | Journal: Pakistan journal of biological sciences : PJBS | Year: 2014

The assessment of severity with chronological development of disease of mesta (Hibiscus cannabinus, cv. HC-583) on a particular diseased plant was studied. Based on the symptomatology and intensity of diseases caused by Begomovirus an empirical formula was developed. A methodology for assessing the disease intensity of yellow vein mosaic disease of mesta grown under natural field condition was proposed and it was validated by comparing with infected plants grown under field as well as glasshouse conditions. Quantitative assessment of the disease indicated that the disease index value at different stages of pathogenesis varied from 1.82 to 49.44 under field condition whereas the same varied from 2.78 to 50.83 under glasshouse condition. Mortality of infected leaves was noticed when the index value reached maximum. With the present methodology scoring of gradual development of disease has become possible for a particular plant and even for an individual leaf of a particular cultivar.

Loading Barasat College collaborators
Loading Barasat College collaborators