Influence of Cooking Workshops on Cooking Skills and Knowledge among Children Attending Summer Day Camps

2020 ◽  
Vol 81 (2) ◽  
pp. 86-90 ◽  
Author(s):  
Raphaëlle Jacob ◽  
Annie Motard-Bélanger ◽  
Véronique Provencher ◽  
Melissa Anne Fernandez ◽  
Hélène Gayraud ◽  
...  
Keyword(s):  
Healthy Eating ◽  
Comparison Group ◽  
Intervention Group ◽  
Nutrition Knowledge ◽  
Action Program ◽  
Cooking Skills ◽  
Knowledge And Attitudes ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

This study aimed to measure the influence of the Chefs in Action program (3 cooking workshops) on cooking skills, nutrition knowledge, and attitudes towards healthy eating in children attending summer day camps and compare it with a single cooking workshop. Groups of children (8–12 years) were randomly assigned to the intervention group (n = 25) or to 1 of 3 comparison groups performing a single workshop (group 1, n = 16; group 2, n = 36; group 3, n = 24). Two dietitians evaluated cooking skills during the workshops. Nutrition knowledge and attitudes towards healthy eating were assessed before and after the intervention. No improvement in cooking skills was observed in the intervention group (P = 0.25). The intervention group’s cooking skills score was significantly higher than comparison group 1 (P < 0.001). Nutrition knowledge was significantly improved in the intervention group and the comparison group 3 (P < 0.0001) but no effect on attitudes towards healthy eating was observed (Pgroup × time = 0.36). In conclusion, the Chefs in Action program positively impacted nutrition knowledge in children. The results also suggest that the type of recipe may influence nutrition knowledge and cooking skills. Further studies are needed to better assess the degree of difficulty required in cooking workshop recipes to improve cooking skills in children.

scholarly journals Matrix metalloproteinase-8 and osteoprotegerin in saliva of children with chronic kidney disease

2021 ◽  
pp. 62-68
Author(s):  
Н.С. Морозова ◽  
Н.Б. Захарова ◽  
Д.Ю. Лакомова ◽  
Л.Д. Мальцева ◽  
О.Л. Морозова
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Transplantation ◽  
Kidney Disease ◽  
Comparison Group ◽  
Group 3 ◽  
Group 2 ◽  
One Year ◽  
End Stage ◽  
Stage 1 ◽  
Group 1

Изменения минерального гомеостаза являются причиной костных нарушений зубочелюстной системы (ЗЧС) при хронической болезни почек (ХБП) у детей и могут развиваться задолго до появления клинических проявлений уремической токсинемии на 2-й стадии ХБП. В последние годы большое внимание уделяется неинвазивным методам диагностики патологии полости рта у детей. Наиболее известными индикаторами нарушения костного метаболизма считают матриксную металлопротеиназу 8 (ММР-8) и остеопротогерин (OPG). Цель исследования - установить закономерности изменения содержания ММР-8 и OPG в слюне детей с различной тяжестью ХБП. Объект и методы. Проведено исследование содержания ММР-8 и OPG в слюне у 76 детей, которые были разделены на равные группы по 19 человек: 1 группа - дети с ХБП 1-2 степени, получающие медикаментозное лечение; 2 группа - дети с терминальной стадией ХБП, получающие заместительную почечную терапию в объёме гемодиализа; 3 группа - дети через год после перенесённой трансплантации почки; 4 группа (группа сравнения) - дети с малой хирургической патологией, не имеющие патологии почек. Сбор слюны осуществлялся абсорбционным методом до медикаментозной коррекции основного заболевания утром до приема пищи. Исследование ММР-8 и OPG проводили методом твердофазного иммуноферментного анализа. Результаты. Установлено, что содержание ММР-8 и OPG в слюне у детей с различной степенью ХБП было значительно выше по отношению к группе сравнения. Максимальные значения ММР-8 регистрировались во 2-й группе у детей с терминальной ХБП, находящихся на гемодиализе. Повышение содержания OPG в слюне отмечалось в 1 группе детей с ХБП 1-2-й степени и 3-й группе пациентов, через год после перенесённой трансплантации почки. Заключение. Полученные результаты показывают возможность использования слюны в качестве биологической жидкости для диагностики доклинических этапов нарушения костного метаболизма у детей с ХБП, а ММР-8 и OPG в слюне могут рассматриваться в качестве предиктивных и прогностических маркеров. Changes in mineral homeostasis cause bone disorders of the dentition in children with chronic kidney disease (CKD) and may develop long before the onset of clinical manifestations of uremic toxemia in stage 2 CKD. In recent years, much attention has been paid to noninvasive methods for diagnosing oral pathology in children. The most common indicators of metabolic bone disorders are matrix metalloproteinase-8 (MMP-8) and osteoprotogerin (OPG). The aim of the study was to establish the patterns of changes in salivary concentrations of MMP-8 and OPG in children with various severity of CKD. Subject and methods. Salivary levels of MMP-8 and OPG were studied in 76 children divided into four equal groups: group 1, children with stage 1-2 CKD receiving a drug treatment; group 2, children with end-stage CKD receiving renal replacement therapy with hemodialysis; group 3, children one year after the kidney transplantation; and group 4 (comparison group), children with a minor surgical pathology without a kidney pathology. Saliva samples were collected by the absorption method before administration of drugs for the underlying disease, one hour before the morning meal. Salivary concentrations of MMP-8 and OPG were measured by enzyme-linked immunosorbent assay. Results. Salivary levels of MMP-8 and OPG were significantly higher in children with various severity of CKD than in the comparison group. The highest values of MMP-8 were observed in group 2 children with end-stage CKD on hemodialysis. Increased salivary OPG was noted in group 1 children with stage 1-2 CKD and in group 3 patients one year after the kidney transplantation. Conclusion. Saliva can be used as a biological fluid for diagnosis of preclinical stages of bone metabolism disorders in children with CKD, and salivary MMP-8 and OPG can be considered as predictive and prognostic markers.

Interventional Strategies for Control of Anemia among Rural Young Women in Coimbatore

2018 ◽  
Vol 55 (3) ◽  
pp. 266
Author(s):  
K. Sujatha ◽  
S. Kowsalya
Keyword(s):  
Nutrition Education ◽  
Young Women ◽  
Rural Women ◽  
Intervention Group ◽  
Developed Countries ◽  
Reproductive Age ◽  
The World ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Anaemia is the most common micro-nutrient deficiency disorder in the world. The prevalence of anaemia is higher in developing countries than in developed countries. Anaemia affects half a billion women of reproductive age worldwide. India had always been the country with the highest prevalence of anaemia and the home of the largest number of anaemic individuals in the world. A cross sectional community based study was conducted to estimate the prevalence of anaemia among 700 young women in the age group of 19-35 years hailing from different rural areas of Karamadai from Coimbatore district and to assess their iron nutriture. Data on anthropometric measurements, biochemical investigations and dietary details were recorded using a pre-designed, pre-tested proforma. Data were analyzed statistically using mean, standard deviation and ANOVA. Hemoglobin estimation (Cyanmet haemoglobin method) revealed that the prevalence of anaemia among rural women (N = 580) and it was reported that 84.83% of the rural young women were moderately anaemic and 14.83% were mild anaemic. A subsample of 85 moderate anaemic subjects were divided into Group 1 (Nutrition Education + Food supplement intervention), Group 2 (Nutrition Education+Kitchen garden intervention) and Group 3 (Nutrition Education intervention) and subjected to respective intervention for four months. Biochemical analysis revealed significant increase (p≤0.01) in haemoglobin level among the subjects in Group 1, Group 2 and Group 3 after intervention further showing that the majority of rural women improved from moderate to mild level of anaemia and from mild level to normal level of hemoglobin after intervention. Therefore the intervention measures are more effective when they are integrated with other approaches namely better nutritional practices, fortification, dietary modification, infection control, public health measures and income generation programmes. Nutrition education must be made an integral part to all the strategies.

scholarly journals Gaelic4Girls—The Effectiveness of a 10-Week Multicomponent Community Sports-Based Physical Activity Intervention for 8 to 12-Year-Old Girls

2020 ◽  
Vol 17 (18) ◽  
pp. 6928 ◽  
Author(s):  
Orlagh Farmer ◽  
Kevin Cahill ◽  
Wesley O’Brien
Keyword(s):  
Physical Activity ◽  
Intervention Group ◽  
Psychological Wellbeing ◽  
Control Group ◽  
Psychological Correlates ◽  
Group 3 ◽  
Group 2 ◽  
Community Sports ◽  
And Control ◽  
Group 1

Girls are less active than boys throughout childhood and adolescence, with limited research focusing on female community sports-based programs. This study aims to assess the effectiveness of a multi-component, community sports-based intervention for increasing girl’s physical activity (PA) levels, fundamental movement skill (FMS) proficiency, and psychological wellbeing, as relative to a second treatment group (the traditionally delivered national comparative program), and a third control group. One hundred and twenty female-only participants (mean age = 10.75 ± 1.44 years), aged 8 to 12 years old from three Ladies Gaelic Football (LGF) community sports clubs (rural and suburban) were allocated to one of three conditions: (1) Intervention Group 1 (n = 43) received a novel, specifically tailored, research-informed Gaelic4Girls (G4G) intervention; (2) Intervention Group 2 (n = 44) used the traditionally delivered, national G4G program, as run by the Ladies Gaelic Football (LGF) Association of Ireland; and (3) Control Group 3 (n = 33) received no G4G intervention (group 1 or 2) conditions and were expected to carry out their usual LGF community sports activities. Primary outcome measurements (at both pre- and 10-week follow up) examining the effectiveness of the G4G intervention included (1) PA, (2) FMS and (3) Psychological correlates (enjoyment levels, self-efficacy, peer and parental support). Following a two (pre to post) by three (intervention group 1, intervention group 2, and control group 3) mixed-model ANOVA, it was highlighted that intervention group 1 significantly increased in PA (p = 0.003), FMS proficiency (p = 0.005) and several psychological correlates of PA (p ≤ 0.005). The findings demonstrate that the 10-week, specifically tailored, research-informed G4G intervention is a feasible and efficacious program, leading to a positive effect on the physical and psychological wellbeing of pre-adolescent Irish girls, relative to the traditionally delivered national G4G comparative program and control group conditions.

scholarly journals Evaluation of a surgical treatment algorithm for neglected clubfoot in low-resource settings

2021 ◽  
Author(s):  
Manon Pigeolet ◽  
Saiful Imam ◽  
Gheorghe Cristian Ninulescu ◽  
Shafiul Kabir ◽  
Pierre R. Smeesters ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Treatment Algorithm ◽  
Intervention Group ◽  
Outcome Evaluation ◽  
Idiopathic Clubfoot ◽  
Triple Arthrodesis ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Abstract Purpose Idiopathic clubfoot affects approximately 1/1000 alive-born infants, of whom 80–91% are born in low- or middle-income countries (LMICs). This retrospective study aimed to evaluate the morphological, functional, and social outcomes in patients with neglected clubfoot in rural Bangladesh, after receiving surgical treatment. Methods Patients received a posteromedial release (PMR) with or without an additional soft tissue intervention (group 1), a PMR with an additional bony intervention (group 2), or a triple arthrodesis (group 3) according to our surgical algorithm. Patients were followed until two year post-intervention. Evaluation was done using a modified International Clubfoot Study Group Outcome evaluation score and the Laaveg-Ponseti score. Results Twenty-two patients with 32 neglected clubfeet (ages 2–24 years) received surgical treatment. Nineteen patients with 29 clubfeet attended follow-up. At two year follow-up an excellent, good, or fair Laaveg-Ponseti score was obtained in 81% (group 1), 80% (group 2), and 0% (group 3) of the patients (p value 0.0038). Age at intervention is inversely correlated with the Laaveg-Ponseti score at two year follow-up (p < 0.0001). All patients attended school or work and were able to wear normal shoes. Conclusion Our treatment algorithm is in line with other surgical algorithms used in LMICs. Our data reconfirms that excellent results can be obtained with a PMR regardless of age. Our algorithm follows a pragmatic approach that takes into account the reality on the ground in many LMICs. Good functional outcomes can be achieved with PMR for neglected clubfoot. Further research is needed to investigate the possible role of triple arthrodesis.

In-vivo evaluation of the effect of cyanoacrylate on prosthetic vascular graft infection – does cyanoacrylate increase the severity of infection?

VASA ◽  
2020 ◽  
Vol 49 (4) ◽  
pp. 281-284
Author(s):  
Atıf Yolgosteren ◽  
Gencehan Kumtepe ◽  
Melda Payaslioglu ◽  
Cuneyt Ozakin
Keyword(s):  
Vascular Graft ◽  
Graft Infection ◽  
Vascular Graft Infection ◽  
Group 4 ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Prosthetic Vascular Graft Infection ◽  
Group 1

Summary. Background: Prosthetic vascular graft infection (PVGI) is a complication with high mortality. Cyanoacrylate (CA) is an adhesive which has been used in a number of surgical procedures. In this in-vivo study, we aimed to evaluate the relationship between PVGI and CA. Materials and methods: Thirty-two rats were equally divided into four groups. Pouch was formed on back of rats until deep fascia. In group 1, vascular graft with polyethyleneterephthalate (PET) was placed into pouch. In group 2, MRSA strain with a density of 1 ml 0.5 MacFarland was injected into pouch. In group 3, 1 cm 2 vascular graft with PET piece was placed into pouch and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. In group 4, 1 cm 2 vascular graft with PET piece impregnated with N-butyl cyanoacrylate-based adhesive was placed and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. All rats were scarified in 96th hour, culture samples were taken where intervention was performed and were evaluated microbiologically. Bacteria reproducing in each group were numerically evaluated based on colony-forming unit (CFU/ml) and compared by taking their average. Results: MRSA reproduction of 0 CFU/ml in group 1, of 1410 CFU/ml in group 2, of 180 200 CFU/ml in group 3 and of 625 300 CFU/ml in group 4 was present. A statistically significant difference was present between group 1 and group 4 (p < 0.01), between group 2 and group 4 (p < 0.01), between group 3 and group 4 (p < 0.05). In terms of reproduction, no statistically significant difference was found in group 1, group 2, group 3 in themselves. Conclusions: We observed that the rate of infection increased in the cyanoacyrylate group where cyanoacrylate was used. We think that surgeon should be more careful in using CA in vascular surgery.

Abnormal Haemostasis and Blood Viscosity in Malignant Hypertension

1984 ◽  
Vol 52 (03) ◽  
pp. 253-255 ◽  
Author(s):  
C Isles ◽  
G D O Lowe ◽  
B M Rankin ◽  
C D Forbes ◽  
N Lucie ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Blood Viscosity ◽  
Renal Damage ◽  
Antithrombin Iii ◽  
Plasma Viscosity ◽  
Malignant Hypertension ◽  
Fibrin Deposition ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

SummaryWe have previously shown abnormalities of haemostasis suggestive of intravascular coagulation in patients with malignant hypertension, a condition associated with retinopathy and renal fibrin deposition. To determine whether such abnormalities are specific to malignant hypertension, we have measured several haemostatic and haemorheological variables in 18 patients with malignant hypertension (Group 1), 18 matched healthy controls (Group 2), and 18 patients with non-malignant hypertension (Group 3) matched for renal pathology, blood pressure and serum creatinine with Group 1. Both Groups 1 and 3 had increased mean levels of fibrinogen, factor VIIIc, beta-thrombo- globulin, plasma viscosity and blood viscosity (corrected for haematocrit); and decreased mean levels of haematocrit, antithrombin III and platelet count. Mean levels of fast antiplasmin and alpha2-macroglobulin were elevated in Group 1 but not in Group 3. We conclude that most blood abnormalities are not specific to malignant hypertension; are also present in patients with non-malignant hypertension who have similar levels of blood pressure and renal damage; and might result from renal damage as well as promoting further renal damage by enhancing fibrin deposition. However increased levels of fibrinolytic inhibitors in malignant hypertension merit further investigation in relation to removal of renal fibrin.

Features of postoperative period in patients with chronic venous insufficiency: phlebectomy versus thermal ablation

2020 ◽  
pp. 64-75
Author(s):  
E. Burleva ◽  
O. Smirnov ◽  
S. Tyurin
Keyword(s):  
Postoperative Period ◽  
Chronic Venous Insufficiency ◽  
Thermal Ablation ◽  
Venous Insufficiency ◽  
Clinical Symptoms ◽  
Varicose Veins ◽  
Statistical Processing ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

The purpose of the study was to conduct a comparative assessment of the course of the postoperative period after phlebectomy and thermal ablation in patients with varicose veins of the lower extremities in the system of the great saphenous vein (GSV) with class C2 of chronic venous insufficiency (CVI) — CEAP class C2. Materials and methods: 455 patients (455 limbs) with CEAP class C2. Group 1 (n = 154) received stripping + minimally invasive phlebectomy; Group 2 — endovenous laser ablation (EVLA) of GSV trunk + sclerotherapy of varicose veins; 3 group (n = 150) — radiofrequency ablation (RFA) of the GSV + sclerotherapy. All patients were united by a single tactical solution — the elimination of pathological vertical reflux in GSV. In each group, patients were with similar hemodynamic profile were selected (Group 1 = 63; Group 2 = 61; Group 3 = 61). The course of the postoperative period (from 2 days to 2 months) was compared for pain (visual analog scale — VAS), clinical symptoms of chronic venous insufficiency, degree of satisfaction (Darvall questionnaire), and duration of disability. Statistical processing was carried out using Excel programs for Windows XP, MedCalc® (version 11.4.2.0., Mariakerke, Belgium). Results: Postoperative pain is more pronounced (during day 1 for Group 1–4.0, Group 2–3.0, Group 3–2.0) and more prolonged (up to 4 days) after open surgeries (p < 0.05). The dynamics of the clinical symptoms of CVI (including varicose syndrome and use of compression therapy) could not be fully evaluated in connection with the ongoing sclerotherapy procedures for patients of Groups 2 and 3. Satisfaction of patients with aesthetic aspects was higher than expected in all groups. Reliable statistical differences proved decrease in days of disability (Group 1–14; Group 2–4; Group 3–3) and earlier return to physical activities and work in patients after thermal ablation in comparison with phlebectomy. Conclusion: The study shows that all three methods for eliminating vertical reflux in the GSV can be proposed for a large category of patients with CEAP of class C3 and C2. Medical and social rehabilitation of patients using endovascular thermal ablation technologies proceeds faster, which is beneficial both for the patients and for society.

Analysis of the quality of early diagnostics of cardiovascular diseases in students of educational institutions of Khabarovsk (according to the data of preventive examinations)

2020 ◽  
pp. 13-16
Keyword(s):  
Blood Pressure ◽  
Cardiovascular Diseases ◽  
Sinus Tachycardia ◽  
Blood Pressure Level ◽  
Educational Institutions ◽  
Conduction Disturbances ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

To identify the prevalence of early pathology of cardiovascular diseases, a survey of 400 200 girls) in the age group 15 and 17 years old was conducted as a part of routine medical of the level of blood pressure (BP) was carried out, with the calculation of the average level pressure on the basis of three separate measurements estimated by percentile tables for a registration of a standard resting ECG in 12 leads. According to the results of the survey, into 3 groups: with an increase in blood pressure above 95 ‰ (group 1 – 16 people), which recorded in males (p<0,05); Group 2 (67 people) – adolescents with a normal blood pressure level and group 3 of adolescents with a decrease in blood pressure below 5 ‰ changes in the form of rhythm and conduction disturbances were noted in almost every a predominance of sinus tachycardia in the first group. In the third group of adolescents, form of ectopic rhythm and pacemaker migration were significantly more frequently only 78 % of adolescents were referred for consultation and in-depth examination by a pediatric cardiologist.

Does Perioperative Hemoglobin A1c Level Affect the Incidence, Pattern and Mortality of Lower Extremity Amputation?

2019 ◽  
Vol 17 (4) ◽  
pp. 354-364
Author(s):  
Hassan Al-Thani ◽  
Moamena El-Matbouly ◽  
Maryam Al-Sulaiti ◽  
Noora Al-Thani ◽  
Mohammad Asim ◽  
...  
Keyword(s):  
Glycemic Control ◽  
Lower Extremity ◽  
Hazard Ratio ◽  
Lower Extremity Amputation ◽  
Group 4 ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Extremity Amputation ◽  
Group 1

Background: We hypothesized that perioperative HbA1c influenced the pattern and outcomes of Lower Extremity Amputation (LEA). Methods: A retrospective analysis was conducted for all patients who underwent LEA between 2000 and 2013. Patients were categorized into 5 groups according to their perioperative HbA1c values [Group 1 (<6.5%), Group 2 (6.5-7.4%), Group 3 (7.5-8.4%), Group 4 (8.5-9.4%) and Group 5 (≥9.5%)]. We identified 848 patients with LEA; perioperative HbA1c levels were available in 547 cases (Group 1: 18.8%, Group 2: 17.7%, Group 3: 15.0%, Group 4: 13.5% and Group 5: 34.9%). Major amputation was performed in 35%, 32%, 22%, 10.8% and 13.6%, respectively. Results: The overall mortality was 36.5%; of that one quarter occurred during the index hospitalization. Mortality was higher in Group 1 (57.4%) compared with Groups 2-5 (46.9%, 38.3%, 36.1% and 31.2%, respectively, p=0.001). Cox regression analysis showed that poor glycemic control (Group 4 and 5) had lower risk of mortality post-LEA [hazard ratio 0.57 (95% CI 0.35-0.93) and hazard ratio 0.46 (95% CI 0.31-0.69)]; this mortality risk persisted even after adjustment for age and sex but was statistically insignificant. The rate of LEA was greater among poor glycemic control patients; however, the mortality was higher among patients with tight control. Conclusion: The effects of HbA1c on the immediate and long-term LEA outcomes and its therapeutic implications need further investigation.

Cholinesterase Activities and Oxidative Stress in Cattle Experimentally Exposed to Nitrate/Nitrite in Cultivated Pasture with Different Fertilization Schemes

2018 ◽  
Vol 46 (1) ◽  
Author(s):  
Ricardo Christ ◽  
Aleksandro Schafer Da Silva ◽  
Mateus Eloir Grabriel ◽  
Luan Cleber Henker ◽  
Renan Augusto Cechin ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Enzyme Activity ◽  
Cholinesterase Activity ◽  
Blood Samples ◽  
Group 3 ◽  
Cholinesterase Activities ◽  
Group 2 ◽  
Nitrate And Nitrite ◽  
And Oxidative Stress ◽  
Group 1

  Background: Nitrate and nitrite poisoning is associated with pasture intake that has high nitrate levels and leads to acute methemoglobinemia. Pasture may accumulate nitrate under certain conditions, such as excessively fertilized soil or en­vironmental conditions that enhance the N absorption (rain preceded by a period of drought). After ingestion of plants, this substrate reaches the rumen and, in physiological conditions, is reduced to nitrite and afterward to ammonia. The aim of this study was to evaluate changes in cholinesterase activities and oxidative stress caused by subclinical poisoning for nitrate and nitrite in cattle fed with Pennisetum glaucum in three different fertilization schemes. Materials, Methods & Results: In order to perform the experimental poisoning, the pasture was cultivated in three dif­ferent paddocks: with nitrogen topdressing (urea; group 1), organic fertilizer (group 2) or without fertilizer (group 3; control). Nitrate accumulation in forage was evaluated by the diphenylamine test. After food fasting of 12 h, nine bovine were randomly allocated to one of the experimental groups and fed with fresh forage (ad libitum) from respective pad­dock. In different time points from beginning of pasture intake (0, 2, 4, 6 and 9 h) heart rate and respiratory frequency were assessed, as well as mucous membrane color and behavioral changes. Blood samples from jugular vein into vials with and without anticoagulant were collected. From blood samples, serum nitrite levels, acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzyme activity were evaluated, as well as oxidative stress through the following param­eters: levels of nitrate/nitrite (NOx), thiobarbituric acid reactive substances (TBARS) and reactive oxygen species (ROS), beyond the antioxidant system by enzyme activity measurement of catalase (CAT) and superoxide dismutase (SOD). The diphenylamine test was positive to group 1 and 2, so that the pasture presented 3.16 mg/kg, 2.98 mg/kg and 1.67 mg/kg of nitrate for group 1, 2 and 3, respectively. In addition, cows from group 1 demonstrated increased (P < 0.05) nitrite levels in serum, compared to other groups, and greater heart rate after 9 h (P < 0.05). The AChE and BChE activity in group 1 showed significant increase (P < 0.05) at 4 and 6 h (AChE), and 4 and 9 h (BChE) compared to group 3. Also, NOx levels were lower at 6 and 9 h (P < 0.05) and at 9 h (P < 0.05) for animals of group 1 and 2, respectively, when compared to group 3. Furthermore, in the group 1 levels of ROS and TBARS were significantly higher (P < 0.05) after 2 and 4 h, and 6 and 9 h compared to other groups, respectively. The CAT activity increased significantly (P < 0.05) with 2 and 4 h of the experiment, but on the other hand, decreased at 6 and 9 h in group 1. Nevertheless, the animals from group 2 presented only a significant reduction in this enzyme activity at 9 h. Furthermore, SOD activity was reduced in animals of groups 1 (P < 0.05) at 4, 6 and 9 h, compared to other groups. Discussion: It was concluded that the nitrate and nitrite poisoning by pasture intake cultivated and fertilized with urea leads to increased levels of serum nitrite, as well as the cholinesterase activity and causes oxidative stress in cattle. It is conjectured that the cholinesterase activity and oxidative stress may assist in understanding the pathophysiology of changes caused by poisoning.Keywords: plant toxicology, poisoning, methemoglobin, cholinergic system, oxidative stress.

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