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Articles by R. Maan
Total Records ( 7 ) for R. Maan
  N. Kataria , A.K. Kataria , N. Pandey , R. Maan , A. Joshi , L.N. Sankhla , M. Chaturvedi , R. Pachauri and P.K. Pilania
  An investigation was carried out in 1235 male and female goats of Marwari breed belonging to arid tracts in India to find out the role of serum magnesium as a biomarker of oxidative stress. The samples were collected during moderate and hot ambiences from apparently healthy animals and from the animals having gastrointestinal parasites, Peste des Petits Ruminants (PPR), mange and those affected by drought. The mean value recorded during moderate ambience was considered as control. The mean value of serum magnesium during hot ambience of animals having gastrointestinal parasites, PPR, mange and those affected by drought were significantly (p≤0.05) lower than control mean value. Minimum value was observed in drought affected animals. The control mean value of serum magnesium was 1.24±0.003 m mol L-1 and the lowest value in drought affected animals was 0.49±0.002 m mol L-1. Simultaneously, serum catalase was also determined in each case to assess oxidative stress because it is considered as a potent marker of oxidative stress. Significantly higher (p≤0.05) values of serum catalase in each case revealed the presence of oxidative stress in animals. A concomitant decrease in serum magnesium reflected towards its antioxidant property. It was concluded that oxidative stress resulted in lowering in the serum magnesium levels however, impact varied. Low serum magnesium in gastrointestinal parasitised, PPR, mange and drought affected animals could be the outcome of oxidative stress to the animals and therefore it can be opined that dietary deficiency of magnesium is not the only reason behind the low magnesium levels but oxidative stress mechanism also play pivotal role. Serum magnesium can be used effectively as one of the biomarkers to assess oxidative stress.
  R. Maan , N. Kataria , P.K. Pilania , A. Sharma , S. Arora , A. Joshi , L.N. Sankhala , S.K. Sharma , N. Mohammad , P. Nathawat and A.K. Kataria
  Serum Superoxide Dismutase (SOD) profiling was carried out in the Marwari breed of sheep from arid tracts in India. Animals were categorized according to sex and age. Blood samples were collected during moderate, extreme hot and cold ambiences to harvest sera. Mean value of serum SOD during moderate ambience was 171.76±2.72 kU L-1. Moderate mean value was considered as control. The mean value of serum SOD was significantly (p≤0.05) higher during hot and cold ambiences as compared to control. Mean value was 2.57 times higher in hot ambience and 1.54 times higher in cold ambience as compared to control. The sex and age effects were significant (p≤0.05) in all ambiences. The mean values were significantly (p≤0.05) higher in male animals than female animals. In each ambience the age effect showed a significant (p≤0.05) increase in the mean values being highest in the animals of 2.5-4.5 years of age. Increased SOD activities during extreme ambiences indicated the development of oxidative stress. Present study generated data of SOD which can be used as reference values for future studies and for diagnostic purposes. The pattern of variation of SOD activity indicated modulation of adaptive mechanisms to protect the body from changes in ambient temperatures and on this basis use of antioxidants in the animals during changing environments is recommended.
  N. Kataria , Abhimanu , S. Arora , A. Sharma , R. Maan , S. Soren , A.K. Kataria , N. Mohammad , P.K. Pilania , L.N. Sankhala , M.K. Thori , J.S. Gaur and A. Meena
  A study was carried out in male and female calves of Rathi breed belonging to arid tracts from India to find out status of free radical scavenging enzymes during hot ambience. Blood samples were collected during moderate and hot ambiences to harvest sera. Maximum ambient temperature ranged from 44.5-46.5°C during hot ambience. All calves were managed in similar conditions and were apparently healthy. Free radical scavenging enzymes included Superoxide Dismutase (SOD), Glutathione Reductase (GR) and Catalase (CAT). The moderate (control) mean values of serum SOD, GR and CAT were 173.00±1.43, 11.00±0.09 and 74.80±1.00 kU L-1, respectively irrespective of gender and age. Similar pattern of significant change (p≤0.05) was observed by all the three enzymes in heat stressed calves being higher during hot ambience. The mean values were 2.67, 2 and 1.41 times higher, respectively in heat stressed calves during hot ambience. The sex and age effects were significant (p≤0.05) in moderate and hot ambiences for all the three enzymes. The mean values were significantly (p≤0.05) higher in male animals than female animals. In each ambience the age effect showed a significant (p≤0.05) increase in the mean values being highest in the calves of 6 months to 1 year of age. Results clearly indicated that status of free radical enzymes changed in heat stressed calves probably to scavenge higher number of free radicals formed during hot ambience. All the three enzymes used are important biomarkers of oxidative stress. Present study provided data which can be used as reference values to assess the extent of oxidative stress. This will help in timely protection of calves from ensuing health disorders.
  R. Maan , N. Kataria , S. Sharma , S. Arora , A. Sharma , A. Joshi , N. Mohammad , P.K. Pilania and L.N. Sankhala
  Serum Monoamine Oxidase (MAO) activities were determined in the Marwari breed of sheep from arid tracts in India during extreme ambient temperature periods. Animals were categorised according to sex and age. Blood samples were collected during moderate, extreme hot and cold ambient temperatures to harvest sera. The overall mean value of MAO was 288.88±5.10 U L-1 which was obtained from 630 animals irrespective of sex and age. The range was 102-600 U L-1. Further mean values were determined according to ambient temperatures irrespective of sex and age. Moderate overall mean value was 162.14±4.61 U L-1 which was obtained from 210 animals during moderate ambience. The mean value of serum MAO was significantly (p≤0.05) higher during hot and cold ambient temperatures as compared to moderate mean value. The sex and age effects were significant (p≤0.05) in all ambient temperatures. The mean values were significantly (p≤0.05) higher in male animals than female animals. Age effect showed a significant (p≤0.05) increase in the mean values being highest in the animals of 2.5-4.5 years of age. The sex and age effects were significant (p≤0.05) in all ambient temperatures. Pattern of variations in serum MAO activities indicated that oxidative stress developed in sheep due to extreme ambient temperatures. Impact of hot ambient temperature was greater than cold ambient temperature.
  A. Sharma , N. Kataria , N. Arya , M. Mathur , R. Maan , A. Joshi , Abhimanu , L.N. Sankhala , T. Bhati and A.K. Kataria
  A study was conducted to assess modulations in gluconeogenesis in Marwari goat of both sexes ageing 6 months to 4.5 years during moderate, hot and cold environmental temperature periods. Liver samples were collected to determine Phosphoenolpyruvate Carboxykinase (PEPCK), Glucose-6-Phosphatase (Glc-6-Pase), Aspartate amino Transferase (AST) and Alanine Aminotransferase (ALT) enzymes. Moderate mean values of liver tissue PEPCK, Glc-6-Pase, AST and ALT were 562.00±7.25 U g-1, 160.00±4.25 mU g-1, 3.6±0.02 U g-1 and 2.6±0.01 U g-1, respectively. The mean values were significantly (p≤0.05) higher during hot and cold environmental temperatures in comparison to moderate mean value in each case. The sex and age effects were significant (p≤0.05) in all the environmental temperatures for all the four enzymes and pattern of variation was similar. The mean values were significantly (p≤0.05) higher in female animals than male animals. Age effect showed a significant (p≤0.05) increase in the mean values being highest in the animals of 2-4.5 years of age. Variation in the activities of all the enzymes studied clearly indicated the greater effect of hot environmental temperature on the modulation of gluconeogenesis. Hot period related change was maximum in the activity of PEPCK (4.29 fold) followed by Glc-6-Pase (3.5 fold), ALT (2.92 fold) and AST (2.38 fold). PEPCK and Glc-6-Pase are important enzymes of gluconeogenesis. Enhanced activities of these two enzymes showed adaptive response to combat the stress of environmental temperature through increased glucose production.
  A. Joshi , N. Kataria , S. Sharma , A. Sharma , S. Arora , Abhimanu , R. Maan , S. Asopa , N. Arya , S. Khan and A.K. Kataria
  Present investigation was launched to detect oxidative stress in pregnant and non-pregnant Murrah buffaloes during extreme ambiences. Serum oxidase and peroxidase profiling was used as a tool to detect oxidative stress. Blood samples of apparently healthy adult female Murrah buffaloes were collected to harvest sera during extreme hot cold and moderate ambiences. Moderate mean value of serum oxidase was 50.32±1.21 UL-1 and of serum peroxidase was 49.51±1.11 mUL-1. Extreme hot and cold ambiences resulted into a significant (p≤0.05) rise in the activities of serum oxidase and peroxidase. Animals were classified as non pregnant milch, pregnant milch and pregnant dry and activities of both the enzymes were compared. It was observed that mean values of both the enzymes in non-pregnant milch, pregnant milch and pregnant dry differed significantly (p≤0.05) from each other, respectively in all the ambiences. Non pregnant milch animals showed lowest activities whereas pregnant dry animals exhibited highest activities of both the enzymes. Multipara animals showed significantly (p≤0.05) higher activities than primipara. Serum oxidase and peroxidase are considered as important markers to assess oxidative stress. Increased activities of both the enzymes reflected the presence of oxidative stress in the buffaloes. It was concluded that extreme ambiences resulted into oxidative stress affecting the animals of all the physiological states. In each ambience the magnitude of increase was greater in pregnant dry animals. Trend was similar in all the ambiences but impact was maximum during hot ambience. Multipara animals showed greater changes than primipara. It can be stated that multipara and pregnant dry animals require proper care and supplementation of immuno-nutrients in order to protect them from the ensuing risk of oxidative stress. Further serum oxidase and peroxidase activities can be used effectively in detection of oxidative stress.
  P.K. Pilania , S. Solanki , N. Mohammed , S. Asopa , R. Maan , A. Joshi , L.N. Sankhala , M. Mathur , M.K. Thori , J.S. Gaur , A. Meena and N. Kataria
  An investigation was carried out to assess oxidative stress in goats of Marwari breed affected from gastrointestinal parasitism and pneumonia belonging to farmers’ stock of arid tract of Rajasthan State, India. The animals were grouped into healthy and affected. All the blood samples were collected in sterile tubes with anticoagulants for erythrocyte separation and determination of erythrocytic Catalase (CAT) and Superoxide Dismutase (SOD) as biomarkers of oxidative stress. Activities of both the enzymes were significantly (p≤0.05) higher in affected animals in comparison to healthy lot. Erythrocytic catalase activity was 2.37 times higher in goats having gastrointestinal parasitism and 3.06 times higher in goats affected with pneumonia. Erythrocytic superoxide dismutase activity was 4.77 times higher in goats having gastrointestinal parasitism and 6.40 times higher in goats affected with pneumonia. It was observed that goats affected with pneumonia showed higher magnitude of enzyme activities in comparison to those having gastrointestinal parasites. Magnitude of change was greater in SOD activities than CAT activities. It can be concluded that gastrointestinal parasites and pneumonia served to produce oxidative stress in the goat. Catalase and superoxide dismutase are considered as potent biomarkers of oxidative stress. They are also named as antioxidant enzymes. Increased activities of both these enzymes signified the presence of oxidative stress in order to combat excessive production of free radicals. Antioxidant supplementation is recommended in cases affected with conditions like parasites and pneumonia to protect the animals from oxidative stress and ensuing damage to cellular machinery.
 
 
 
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