1.Efficacy of golden rain tree against free radicals and H2O2-induced damage to pUC18/calf thymus DNA
Manish KUMAR ; Madhu CHANDEL ; Neha SHARMA ; Subodh KUMAR ; Satwinderjeet KAUR
Asian Pacific Journal of Tropical Biomedicine 2012;(z2):781-787
Objective: To investigate the antioxidant and genoprotective potential of the methanol extract (METH-KP) along with its hexane fraction (HEX-KP) from the leaves of Koelreuteria paniculata (K. paniculata) Laxm. Methods: The antioxidant potential was checked using metal chelation assay, ABTS, DPPH (2,2-diphenyl-2-picryl-hydrazyl), reducing power and superoxide anion radical scavenging assay, Folin-Ciocalteu reducing capacity (FCR assay), Total flavonoid content (TFC assay) and genoprotective activity against the DNA damage induced by Fenton's reagent using pUC18/calf thymus. Results: Results showed that radical scavenging activities of the both test extract/fraction revealed a concentration-dependent antiradical activity in all the assays. In Metal chelation assay, METH-KP and HEX-KP showed 39.04% and 32.51% of scavenging at highest tested concentrations. The METH-KP exhibited IC50 of 54.54 μg/mL in ABTS, 115 μg/mL in DPPH, 110 μg/mL in reducing power and 135 μg/mL in superoxide anion radical scavenging assay while that HEX-KP was found to be very poor in radical scavenging in all the above assays. The phytochemical analysis showed good amount of phenolic and flavonoid compounds in METH-KP while the HEX-KP fraction lacks phenols. The METH-KP extract and HEX-KP fraction both showed DNA protective effect in Calf thymus/pUC18 DNA protection studies. Conclusions: The activity of METH-KP may be attributed to its polyphenolic constituents which needs further isolation of its active constituents which may lead to the development of novel drugs to combat cancer.
2.Beneficial Effect of Vitamin E in Rotenone Induced Model of PD: Behavioural, Neurochemical and Biochemical Study.
Experimental Neurobiology 2013;22(3):214-223
Parkinson's disease (PD) a neurodegenerative disorder for which no preventive or long-term effective treatment strategies are available. Epidemiologic studies have failed to identify specific environmental, dietary or lifestyle risk factors for PD. However, oxidative stress in the SN is the most broadly accepted hypothesis for the etiopathology of PD. The Symptoms do not appear until there is a decline of striatal dopamine levels by 80% making it difficult to have early therapeutic interventions. Thus, the present experiment was designed to track down the sequential changes starting from the initiation of motor dysfunction and associated biochemical abnormality in rotenone based PD model. The study also evaluated the neuroprotective efficacy of vitamin E. Rats were treated with rotenone 2 mg/kg b.wt (s.c.) for 35 days. The level of dopamine decreased by 70~80% which was in turn reflected by marked deterioration in motor function such as (Total locomotor activity and catalepsy). Along with these the level of GSH and SOD declined significantly which was associated with elevated lipid peroxidation levels as much as by 60%.Vitamin E co-administration at a dose of 100 I.U/kg b.wt (i.m.) ameliorated rotenone induced changes in motor functions i.e Total locomotor activity and Catalepsy at the end of 5th week. Further, vitamin E supplementation significantly decreased lipid peroxidation and improved associated biochemical parameters i.e SOD and GSH level. Most interestingly the changes appeared as early as 3rd week suggesting that supplementation of vitamin E right at the beginning should be neuroprotective in PD.
Animals
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Catalepsy
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Dopamine
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Life Style
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Lipid Peroxidation
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Motor Activity
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Neurodegenerative Diseases
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Oxidative Stress
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Parkinson Disease
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Rats
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Risk Factors
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Rotenone
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Substantia Nigra
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Track and Field
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Vitamin E
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Vitamins
3.Level of Organochlorine Pesticide in Prediabetic and Newly Diagnosed Diabetes Mellitus Patients with Varying Degree of Glucose Intolerance and Insulin Resistance among North Indian Population
Shipra TYAGI ; Brijesh Kumar MISHRA ; Tusha SHARMA ; Neha TAWAR ; Abdul Jamil URFI ; Basu Dev BANERJEE ; Sri Venkata MADHU
Diabetes & Metabolism Journal 2021;45(4):558-568
Background:
Organochlorine pesticides (OCPs) exposure may induce an endocrine disruption which may lead to the risk of developing diabetes through alteration and disturbance of glucose metabolism, insulin resistance, and destruction of β-cells. The present study determines the recent trend of OCPs residue in blood samples and their association with the known risk factors responsible for developing the risk of diabetes among the North Indian population.
Methods:
Blood sample of 300 patients (100 each of normal glucose tolerance [NGT], prediabetes and newly detected diabetes mellitus [DM]) between the age group of 30 to 70 years were collected. OCPs residue in whole blood samples was analyzed by using gas chromatography equipped with a 63Ni selective electron capture detector.
Results:
Significantly higher levels of β-hexachlorocyclohexane (HCH), dieldrin, and p,p’-dichloro-diphenyl-dichloroethylene (DDE) were found in the prediabetes and newly detected DM groups as compared to NGT group. Insulin resistance showed to be significantly positive correlation with β-HCH and dieldrin. Also, fasting and postprandial glucose levels were significantly positively correlated with levels of β-HCH, dieldrin, and p,p’-DDE. Further, when OCPs level was adjusted for age and body mass index (BMI), it was found that β-HCH, dieldrin, and p,p’-DDE levels in blood increases the risk of diabetes by 2.70, 2.83, and 2.55 times respectively. Moreover, when we adjust OCPs level based on BMI categories (BMI <23, ≥23, and ≤25, and >25 kg/m2); β-HCH and p,p’-DDE showed a significant risk of developing newly detected DM with BMI >25 and ≥23 and ≤25 kg/m2.
Conclusion
The OCPs level present in the environment may be responsible for biological, metabolic, and endocrine disruptions within the human body which may increase the risk of developing newly detected DM. Hence, OCPs exposure can play a crucial role in the etiology of diabetes.
4.Level of Organochlorine Pesticide in Prediabetic and Newly Diagnosed Diabetes Mellitus Patients with Varying Degree of Glucose Intolerance and Insulin Resistance among North Indian Population
Shipra TYAGI ; Brijesh Kumar MISHRA ; Tusha SHARMA ; Neha TAWAR ; Abdul Jamil URFI ; Basu Dev BANERJEE ; Sri Venkata MADHU
Diabetes & Metabolism Journal 2021;45(4):558-568
Background:
Organochlorine pesticides (OCPs) exposure may induce an endocrine disruption which may lead to the risk of developing diabetes through alteration and disturbance of glucose metabolism, insulin resistance, and destruction of β-cells. The present study determines the recent trend of OCPs residue in blood samples and their association with the known risk factors responsible for developing the risk of diabetes among the North Indian population.
Methods:
Blood sample of 300 patients (100 each of normal glucose tolerance [NGT], prediabetes and newly detected diabetes mellitus [DM]) between the age group of 30 to 70 years were collected. OCPs residue in whole blood samples was analyzed by using gas chromatography equipped with a 63Ni selective electron capture detector.
Results:
Significantly higher levels of β-hexachlorocyclohexane (HCH), dieldrin, and p,p’-dichloro-diphenyl-dichloroethylene (DDE) were found in the prediabetes and newly detected DM groups as compared to NGT group. Insulin resistance showed to be significantly positive correlation with β-HCH and dieldrin. Also, fasting and postprandial glucose levels were significantly positively correlated with levels of β-HCH, dieldrin, and p,p’-DDE. Further, when OCPs level was adjusted for age and body mass index (BMI), it was found that β-HCH, dieldrin, and p,p’-DDE levels in blood increases the risk of diabetes by 2.70, 2.83, and 2.55 times respectively. Moreover, when we adjust OCPs level based on BMI categories (BMI <23, ≥23, and ≤25, and >25 kg/m2); β-HCH and p,p’-DDE showed a significant risk of developing newly detected DM with BMI >25 and ≥23 and ≤25 kg/m2.
Conclusion
The OCPs level present in the environment may be responsible for biological, metabolic, and endocrine disruptions within the human body which may increase the risk of developing newly detected DM. Hence, OCPs exposure can play a crucial role in the etiology of diabetes.
5.Red cell alloimmunization in pregnancy: a study from a premier tertiary care centre of Western India
Meenakshi GOTHWAL ; Pratibha SINGH ; Archana BAJPAYEE ; Neha AGRAWAL, ; Garima YADAV ; Charu SHARMA
Obstetrics & Gynecology Science 2023;66(2):84-93
Objective:
The study was conducted to determine the frequency of alloimmunization to various blood group antibodies in pregnant women, and the risk of hemolytic disease in the fetus and newborn.
Methods:
All antenatal women, irrespective of the period of gestation or obstetric history, were included, whereas those taking anti-D immune-prophylaxis or with a history of blood transfusion were excluded. Antibody screening and identification were performed using a Bio-Rad ID microtyping system.
Results:
Of 2,084 antenatal females, 1,765 were D‐antigen positive and 319 D‐antigen negative. Sixty-five (3.119%) women alloimmunized. Out of 54 (2.591%) who had sensitized to D-antigen, 11 (0.527%) also sensitized to other antibodies. These 11 alloantibodies identified included: anti-M (n=6; 9.23%), anti-C (n=1; 3.076%), anti-E (n=1; 1.538%), anti-e (n=1; 1.538%), anti-Lewis (a) (n=1; 1.538%), and unspecified antibodies (n=1; 1.538%). Multiple antibodies were seen in four patients that combined: anti-D and anti-C (n=2; 3.076%), anti-e and anti-c (n=1; 1.538%), and anti-D and anti-G (n=1; 1.538%).
Conclusion
The rate of alloimmunization in D-antigen-negative women was high. Apart from this, the alloimmunization rate in women with bad obstetric history was very high, at 8.1%. In developing countries such as India, universal antenatal antibody screening, though desirable, may not be justified at present, as the cost and infrastructure required would be immense because of the lower alloimmunization rates in RhD antigen-positive women. However, it is necessary to impose properly formulated protocols to screen pregnant women with bad obstetric history.
6.Pattern of mechanical ocular injuries in patients visiting a rural referral centre
Chauhan NEHA ; Tuli RAJEEV ; Sharma Kumar RATTAN ; Kumar DINESH
International Eye Science 2017;17(12):2207-2211
·AIM:To study the pattern of mechanical ocular injuries in patients visiting a rural referral center.·METHODS:The study was conducted in the department of Ophthalmology, Dr. Rajendra Prasad Government Medical College ( RPGMC ) , Kangra ( Himachal Pradesh ) for a period of 12mo from 1st Jan 2013-31st Dec 2013 which included data collection, data organization, presentation, data analysis and data interpretation followed by a period of follow up extending to a period of 1mo. A total of 200 patients were studied which included all patients of mechanical ocular injuries that visited our department either directly or were referred from other public or private institutions during the study period. It was a prospective study in which all the patients were interviewed with the aid of a questionnaire and underwent a detailed ocular examination. The injuries were classified according to the international ocular trauma classification into open globe and closed globe injuries. The injuries of the lid and adnexa and the cranial nerve palsies were considered as separate entities and data analysis was done with MS Excel 2007 worksheet using the Epi info7 software.·RESULTS: A total of 21,710 patients attended the out-patient department( OPD) during the study period out of which 200 patients were of mechanical ocular trauma which formed 0. 921% of the total OPD attendance. The patients ranged in age from 1-80y with a mean age and standard deviation of 33. 12 ± 20. 48y. In those patients 151 patients ( 75. 5%) were males and 49 ( 24. 5%) were females. The male to female ratio was 3:1. Out of the 200 patients studied, 100 were injured at home, 19 in the playground, 29 had occupational injuries, 38 were injured in road side accidents, 10 were injured due to assault, 3 at school and 1 patient was injured during a stampede that occurred in a religious camp. The visual acuity at presentation was upto 6/12 in 47%, <6/12 to 6/36 in 13. 5%, <6/36-1/60 in 6%, <1/60 to PL ( perceive light ) positive in 22% and PL negative in 4 % patients. In 7. 5 %patients the visual acuity could not be assessed on the Snellen's chart. Most of the patients had closed globe injuries (54. 5%) followed by involvement of the lid and adnexa (23%). And 19. 5% had open globe injuries and 3% had involvement of the cranial nerves.· CONCLUSION: Ocular injuries are common and preventable causes of monocular blindness.
7.Administration of Fenugreek Seed Extract Produces Better Effects in Glibenclamide-Induced Inhibition in Hepatic Lipid Peroxidation: An in vitro Study.
Sharma NEHA ; Kar ANAND ; Panda SUNANDA
Chinese journal of integrative medicine 2019;25(4):278-284
OBJECTIVE:
To evaluate the comparative effects of fenugreek (Trigonella foenum graecum) seed extract (FSE) alone and in combination with an antidiabetic conventional medicine, glibenclamide (GLB), on the inhibition of in vitro lipid peroxidation (LPO) in liver, the major target organ of a drug.
METHODS:
LPO was induced by ferrous sulphate (FeSo), hydrogen peroxide (HO) and carbon tetrachloride (CCl) and the effects of test seed extract and/or GLB were evaluated.
RESULTS:
While FeSo, HO and CCl markedly enhanced the hepatic LPO, simultaneous administration of FSE reduced it in a concentration dependent manner. However, when both FSE and GLB were added to the incubation mixture, chemically induced hepatic LPO was further inhibited. The test extract also exhibited high antioxidative activity in 1,1-diphenyl-2-picrylhydrazyl radical and in 2,2'-azinobis, 3-ethylbenzothiazoline-6-sulphonic acid radical scavenging assays.
CONCLUSION
FSE therapy in moderate concentration along with a hypoglycemic drug may prove to be advantageous in ameliorating diabetes mellitus and other diseases that are LPO mediated.