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1

Oxidative stress in standardbred horses during official races of 1600 and 2000 meters

100%
Piccione G., Fazio F., Giudice E.
Medycyna Weterynaryjna
|
2007
|
tom 63
|
nr 12
1554-1557
In thoroughbred race horses, as in other species subjected to physical activity, there is a rise in the imbalance between free radical production and antioxidant agents which leads to oxidative stress. This stress may produce damage in several bio-molecules creating metabolic alterations affecting physical performance. The aim of this study was to find possible relationships between physical exercise and oxidative stress in trained horses. In order to achieve this we reported the results obtained while studying the effect of a physical exercise test on two groups of standardbreds. In particular, the study assessed levels of creatine kinase (CK) and aspartate amino transferase (AST) to evaluate possible muscle-cell membrane damage; reactive oxygen species (ROS), thiol antioxidant barrier (SHp) and antioxidant barrier (Oxy-adsorbent) to evaluate oxidative stress. Two groups of healthy standard bred (Ga and Gb) trained for 1600 and 2000 meter races were used for the study. Blood samples from all horses were collected at rest, immediately after racing, and 30 and 6 hours after racing. The ANOVA for repeated measures showed the highly significant effects of training on some of the studied parameters in both groups (Ga and Gb). Our results seem to indicate that in trained standard breeds acute exercise generates free radicals but they are unable to cause possible muscle-cell membrane damage. However, in order to know whether the inhibition of oxidative processes during exercise benefits physical performance, it would be necessary to simultaneously measure parameters relating to work capacity such as blood lactate, heart rate and oxygen consumption, both in basal conditions and at different times after a standardized race.
2

Heart score and blood lactate in the assessment of athlete horse performance

100%
Piccione G., Costa A., Fazio F., Caola G.
Medycyna Weterynaryjna
|
2003
|
tom 59
|
nr 11
3

Serum homocysteine and oxidative stress evaluation during exercise in horse

88%
Fazio F., Casella S., Giannetto C., Caola G., Piccione G.
Polish Journal of Veterinary Sciences
|
2009
|
tom 12
|
nr 2
169-174
The aim of the present work was to evaluate the influence of exercise on serum homocysteine and oxidative stress in Thoroughbreds during official races. For our study, ten Thoroughbred mares, 5 years old and clinically healthy, were used. The horses were trained to take part in an official 2100 meter race. Reactive oxygen species (dROMs), antioxidant barrier (Oxy-adsorbent), thiol antioxidant barrier (SHp) and homocysteine (sHcy) were investigated. Blood samples, collected from each horse at rest, immediately after the race, and 30 and 180 min after the end of the race, were collected by jugular venipuncture using vacutainer tubes with no additive for the assessment of dROMs, Oxy-adsorbent and SHp by means of a UV spectrophotometer, while serum total Hey values were determined by high performance liquid chromatography with fluorimetric detection and isocratic elution. Statistical analysis, one way repeated measures analysis of variance (ANOVA), followed by Bonferroni's test, showed statistical differences (P<0.05 was considered statistically significant) for all parameters studied. Moreover, a coefficient of linear correlation (r) was computed for values of dROMs and sHcy for all sampling times but a significant linear regression (r = 0.94) was found only after the race. The variations of sHcy, dROMs, Oxy-adsorbent and SHp during the experimental period considered suggest the important role of oxidative status in the athletic horse. The systematic analysis of oxidative stress and its influence on homocysteine levels contribute to the clinical evaluation and assessment of the athletic performance of the horse.
4

Nictemeral profile of platelet aggregation and clotting parameters in horses during training

88%
Casella S., Giannetto C., Fazio F., Assenza A., Piccione G.
Bulletin of the Veterinary Institute in Puławy
|
2009
|
tom 53
|
nr 4
The daily rhythm of platelet aggregation and clotting parameters during training were investigated in six Thoroughbred horses. Blood samples were collected every 4 h for 48 h. Platelet aggregation was measured with an aggregometer and subsequently according to the trends recorded, the percentage of aggregation was calculated. Prothrombin time (PT), activated partial thromboplastin time, thrombin time, and fibrinogen concentration were assessed by means of a coagulometer. A one-way repeated- measures analysis of variance was used to determine significant differences (P<0.05) and the single cosinor method was applied. On each single day, a significant effect of time on the percentage of aggregation and PT was observed. A cosinor analysis identified the nictemeral rhythm of percentage of aggregation and PT that showed a nocturnal acrophases on both days 1 and 2. We can assert that physical exercise could be an event regulating the daily rhythms of platelet aggregation and clotting parameters in the horse.
5

Changes in hematological parameters and clotting times in the horse during a long distance running

88%
Piccione G., Fazio F., Giudice E., Grasso F., Caola G.
Medycyna Weterynaryjna
|
2004
|
tom 60
|
nr 06
6
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Different training schedules influence platelet aggregation in show jumping horses

76%
Giannetto C., Arfuso F., Fazio F., Giudice E., Di Pietro S., Bruschetta D., Piccione G.
Polish Journal of Veterinary Sciences
|
2017
|
tom 20
|
nr 1
Depending on the intensity, duration and type of physical exercise, equine metabolism has to adapt to nervous, cardiovascular, endocrine and respiratory system requirements. In horses, exercise and training are known to have considerable effects on the mechanisms of hemostatic system involving platelet activity. The aim of the present study was to evaluate the effect of different training schedules on platelet aggregation in 15 Italian Saddle jumping horses. Animals were divided into three equal groups: Group A was subjected to a high intensity-training program; group B to a light training program, group C included sedentary horses. From each animal, blood samples were collected by jugular venipuncture at rest on the 1st, 3rd and 5th days, and afterwards, once a week, for a total of 5 weeks data recording, in order to assess the maximum degree of platelet aggregation and the initial velocity of aggregation (slope) platelet aggregation. Two-way analysis of variance (ANOVA) showed a significant effect of the different training schedules on studied parameters. The results revealed a different degree of platelet aggregation and a different initial velocity of platelet aggregation that changes during the different training schedules in horses that could represent a different protective endothelial mechanism. These findings could have an important role for a clearer knowledge of the physiological reference values of platelet aggregation and for a better interpretation of these variations during the training.
7

Effects of monterey cypress (Cupressus macrocarpa Hartw) leaf essential oil as a dietary suppleeent on growth performance and haematological and biochemical parameters of common carp (Cyprinus carpio L.)

76%
Kesbic O. S., Parrino V., Acar U., Yilmaz S., Lo Paro G., Fazio F.
Annals of Animal Science
|
2020
|
tom 20
|
nr 4
8

Redox status, lipid peroxidation and protein oxidation levels in small ruminants

76%
Cecchini S., Piccione G., Saoca C., Giangrosso G., Caputo A. R., Fazio F.
Journal of Animal and Feed Sciences
|
2018
|
tom 27
|
nr 1
Redox status, lipid peroxidation and protein oxidative damage in blood samples of healthy goats and sheep were evaluated to show any possible correlation with daily milk yield or milk components, and between oxidant parameters and biomarkers of protein and lipid damage. Blood and milk samples were collected from fifty Maltese goats and forty Valle del Belice sheep. Redox status was assessed analysing the total oxidant status (TOS), the total antioxidant capacity (TAC), together with the nitric oxide radical (NO• ) metabolite (NOx) content. Oxidative damage of lipids and proteins was analysed as thiobarbituric acid reactive substances (TBARS) and advanced oxidation protein products (AOPP), respectively. As for the comparison of the assessed oxidative stress (OS) parameters in the two species, only AOPP appeared significantly different (P < 0.01). While no correlation was observed between daily milk yield or milk components and the assessed OS parameters in both species, several correlations were shown among the assessed OS parameters, with differences appearing between the two species. In particular, TBARS levels were related to TOS in goats (P < 0.001) and to NOx in sheep (P < 0.001). Levels of AOPP were dependent on NOx concentrations in sheep (P < 0.05) but they were correlated neither with TOS nor NOx in goats (P > 0.05). So, the observed differences between two examined species seem to suggest that OS parameters are species-specific and a panel of different measurements based on various analytical methods should be considered to dutifully evaluate the OS.
9

Adrenocorticotrophic hormone and cortisol levels during late pregnancy and post-foaling period in mares

76%
Piccione G., Arfuso F., Abbate F., Giannetto C., Panzera M., Rizzo M., Fazio F.
Animal Science Papers and Reports
|
2017
|
tom 35
|
nr 2
The aim of this study was to evaluate the trend of adrenocorticotrophic hormone (ACTH) and cortisol levels in mares during peripartum period. Twelve pregnant mares (Group A) were weekly monitored from the last 6 weeks before foaling (6BF-1BF) until the first 3 weeks after foaling (1AF-3AF). Twelve non-pregnant non-lactating mares constituted the control (Group B). Jugular blood samples were analyzed for plasma ACTH and serum cortisol concentration. ACTH showed higher values (P<0.05) at 1BF compared to the postpartum data points (1AF, 2AF and 3AF) in Group A. Cortisol levels were higher (P<0.05) at 1BF and 2BF compared to the 3AF in Group A. A significant positive correlation between ACTH and cortisol values was found in mares from Group A throughout the peripartum period (Pearson’s r=0.40; P=0.0028). The Dunnet’s test showed lower ACTH values in Group A at postpartum data points than control, and higher cortisol levels in Group A throughout prepartum times and at 1AF than control (P<0.0001). The decrease of ACTH and cortisol levels found during the early postpartum period could indicate a reduced HPA response to physical and/or psychological stress during this physiological phase. This could help the mare to protect against stress-associated inhibition of lactation, relieve psychological stress, and enhance her immune function. Further studies involving the evaluation of prolactin and sex steroid hormones values are needed to fully understand the dynamic hormonal changes occurring in pregnant and lactating mares in order to permit clinicians to make appropriate interpretation of the results.
10

Monitoring of some physiological parameters during the first 30 days of a foal's life

76%
Piccione G., Assenza A., Costa A., Borruso M., Fazio F., Caola G.
Medycyna Weterynaryjna
|
2005
|
tom 61
|
nr 10
11

Pathways of interhemispheric transfer in normal and callosum-sectioned human subiects: Evidence from functional brain imaging.

64%
Marzi C. A., Perani D., Tassinari G., Colleluori A., Maravita A., Miniussi C., Paulesu E., Fazio F.
Acta Neurobiologiae Experimentalis
|
1999
|
tom 59
|
nr 1
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