Content of natural antioxidants depending on typological features of autonomous regulation in chickens

Secondary antioxidants inhibit the development of chain reactions of peroxidation of unsaturated fatty acids. In turn, the autonomous nervous system regulates the functioning of internal organs and affects the intensity of metabolic processes in the animal body. However, the question of the content of natural antioxidants in birds, depending on the typological features of autonomous regulation, is not well understood. The purpose of the work was to research the content of natural antioxidants depending on the typological features of the tone of the autonomic nervous system in chickens. For research, chickens of the 35-day-old Cobb-500 cross were used. A study of the typological features of autonomous tone in a research bird was carried out by recording an electrocardiogram and counting one hundred R-R cardio intervals, which were processed by the method of variational pulsometry according to R. M. Baevsky. To determine the effect of autonomic nervous regulation types on the activity of secondary antioxidants in experimental birds, blood samples were taken and the content of tocopherol and retinol was determined. As a result of the researches, it was found that the content of tocopherol and retinol in vagotonic chickens of 35 days old was significantly higher by 13.4 % (P < 0.001) and 14.06 % (P < 0.01) than in sympathotonic chickens, respectively. Reliable correlations between the increase in tocopherol activity and the level of retinol in chickens with a sympathotonic type of autonomic nervous system were revealed. Determination of the content of natural antioxidants of chickens depending on the types of the atomic nervous system makes it possible to identify the bird with the highest stress resistance and antioxidant protection. This creates the conditions for the distribution of chickens depending on typological characteristics and makes it possible to identify chickens at an early stage of development; they need more vitamin supplements with antioxidant properties, as well as to prevent a decrease in growth due to the formation of oxidative stress during the entire growing period.

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EMERGENCY MEDICINE RESIDENTS LACK THE NECESSARY AUTONOMIC NERVOUS SYSTEM BALANCE AND SHORT RELAXATION TECHNIQUES ARE INSUFFICIENT TO SOLVE THIS

Visuomenės sveikata ◽

10.5200/sm-hs.2018.005 ◽

2018 ◽

Vol 28 (1) ◽

pp. 31-35

Author(s):

Martynas Gedminas ◽

Lukas Neimanas ◽

Dinas Vaitkaitis ◽

Nedas Jasinskas ◽

Viktoras Šaferis ◽

...

Keyword(s):

Nervous System ◽

Autonomic Nervous System ◽

Intervention Group ◽

Autonomous Nervous System ◽

Relaxation Techniques ◽

Stress Resilience ◽

Study Objective ◽

Autonomic Nervous ◽

The Impact ◽

Post Shift

Study objective. Heart rate variability (HRV) is an objective, easy-to-obtain parameter that can be used to monitor person’s balance of autonomous nervous system, which in turn decides one’s ability to cope with stress. HRV has been used extensively in professional athletes and the military with the purpose of performance optimisation and burnout prevention. The aim of our study was to investigate the balance of EM residents’ autonomic nervous system, as indicated by fluctuations in day-to-day HRV readings, and the feasibility of short relaxation techniques to increase their stress-resilience. Methods. We conducted a two-month long prospective cross-over double blinded randomized study. Computer randomization was used to divide the EM residents into intervention (A) and control (B) groups. Controls were instructed to listen to a 12 min. relaxation audio file every morning, while the intervention group was equipped with a 12 min. guided meditation that combined rhythmic breathing and attention focusing techniques. After one month, crossover of the interventions took place. Results. After pooling pre-shift and post-shift HRV data, we identified differences of statistical significance with post-shift HRV readings being higher (p=0.028, p<0,05). Individual HRV trend analysis showed significant fluctuations in day-to-day HRV readings. We could not identify the impact of short relaxation techniques on the EM residents HRV trends. Conclusion. Our findings suggest the lack of autonomic nervous system balance among EM residents, as indicated by big fluctuations in their day-to-day HRV trends. During the course of the study, the HRV reading fluctuations did not stabilise, indicating the limited use of our selected short relaxation techniques to increase residents’ stress resilience. We also identified paradoxical findings of higher post-shift HRV readings which could true be due to unique population in the setting of EM.

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MORPHOLOGY AND FUNCTION OF THE AUTONOMOUS NERVOUS SYSTEM

Актуальні проблеми сучасної медицини Вісник Української медичної стоматологічної академії ◽

10.31718/2077-1096.20.1.212 ◽

2020 ◽

Vol 20 (1) ◽

pp. 212-217

Author(s):

A.P. Stepanchuk

Keyword(s):

Spinal Cord ◽

Nervous System ◽

Autonomic Nervous System ◽

Abdominal Cavity ◽

Nerve Cells ◽

Autonomous Nervous System ◽

Autonomic Nervous ◽

Lumbar Spinal ◽

The Brain ◽

Lateral Nuclei

The autonomic nervous system consists of the sympathetic and parasympathetic divisions. The central part is represented by supra-segmental and segmental centres. Parasympathetic segmental centres in the brain are accessory nucleus of the oculomotor nerves, superior salivary nucleus of the facial nerve, inferior salivary nucleus of the glossopharyngeal nerve and dorsal nucleus of the vagus nerve. In the spinal cord, these are the intermediate lateral nuclei. Sympathetic segmental centres in the brain are absent, and in the spinal cord, intermediate-lateral nuclei are located in the lateral horns in the eighth cervical, all thoracic and 1-2 lumbar spinal segments. The peripheral part of the autonomic nervous system is represented by pre-nodal and post-nodal branches, paravertebral, prevertebral and terminal nodes and plexuses. The intramural part of the autonomic nervous system lies in the larger part of a wide and narrow-loop net and represented with a large number of nerve cells different by their shapes and sizes and clustered as intramural nodes, or individual nerve cells included along the net loops. The autonomic plexuses of the abdominal cavity are topographically divided into celiac, superior and inferior mesenteric, abdominal aortic, mesenteric, superior and inferior hypogastric region.

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RESPONSIVENESS OF AUTONOMOUS NERVOUS SYSTEM UNDER EMOTIOGENIC VIDEO CONTENT IN STUDENTS WITH DIFFERENT INITIAL VEGETATIVE TONES

Ulyanovsk Medico-biological Journal ◽

10.34014/2227-1848-2019-4-124-135 ◽

2019 ◽

pp. 124-135

Author(s):

P.A. Bayguzhin ◽

D.Z. Shibkova ◽

A.E. Batueva ◽

A.A. Kudryashov ◽

O.V. Bayguzhina

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Nervous System ◽

Autonomic Nervous System ◽

Sympathetic Tone ◽

Autonomous Nervous System ◽

Video Content ◽

Autonomic Nervous ◽

System Responsiveness ◽

Parasympathetic Tone

The goal of the paper is to reveal the peculiarities of the autonomous nervous system responsiveness under emotiogenic video content in students with different initial vegetative tones. Materials and Methods. The authors examined 33 volunteers, their average age was 21.4±1.5. According to the stress index (SI), the subjects were divided into two groups: in the 1st group (n=14) a sympathetic tone of the autonomic nervous system prevailed (SI>140); in the 2nd group (n=19) initially, there dominated a parasympathetic tone (SI<140). Viewing video content with emotiogenic fragments served as a model for emotion induction. The responsibility of the autonomic nervous system was determined according to the change of indicators in temporal (RRNN, SDNN, RMSSD, pNN50) and mathematical analysis (heart rate, M, Mo, AMo, index of vegetative balance, vegetative rhythm indicator, tension index) of the cardiac rhythmogram. The cardiac rhythmogram was divided into successive analysis steps, which lasted 100 cardiac cycles synchronized with each episode of the stimulus video. Results. Regardless of the video valency, the indicators of a temporary RMSSD and pNN50 analysis are sensitive indicators of heart rate variability under emotiogenic video content in individuals with initial parasympathetic tone; in individuals with initial sympathetic tone these are the indicators of mathematical analysis – the index of vegetative balance and index of tension while watching a video evoking negative emotions. The revealed peculiarities of the vegetative body support at the stages following the exposure to the emotiogenic factors characterize stress-reactive thinking or rumination. The authors registered significant increase in heart rate in individuals with initial parasympathetic tone, whereas in individuals with initial sympathetic tone, there was a certain increase in vagal activity associated with SDNN and pNN50 increase. Conclusion. While evaluating the emotiogenic factor influence on the organism, evident in the autonomic nervous system responsiveness, one should consider the initial autonomic tone of the subjects, the degree of variability, the intensity of changes, and the sensitivity of heart rate variability. Keywords: reactivity, autonomic nervous system, heart rate variability, emotiogenic factor, video content, rumination, students. Цель работы. Выявить особенности реактивности автономной нервной системы при воздействии эмоциогенного видеоконтента у студентов с различным исходным вегетативным тонусом. Материалы и методы. На основании добровольного согласия обследовано 33 чел., средний возраст которых составил 21,4±1,5 года. В зависимости от величины индекса напряжения (ИН) обследуемые были разделены на две группы: 1-я группа (n=14) – с преобладанием симпатического тонуса автономной нервной системы (ИН>140 ед.); 2-я группа (n=19) – с исходным преобладанием парасимпатического тонуса (ИН<140 ед.). Моделью индукции эмоций являлся просмотр видеоконтента, содержащего эмоциогенные фрагменты. Реактивность автономной нервной системы определялась по степени изменения показателей временного (RRNN, SDNN, RMSSD, pNN50) и математического анализа (ЧСС, M, Mo, AMo, ИВР, ВПР, ИН) кардиоритмограммы. Кардиоритмограмма делилась на последовательные этапы анализа, длительность которых составляла 100 кардиоциклов, синхронизированных с каждым фрагментом стимульного видеоряда. Результаты. Чувствительными показателями вариабельности сердечного ритма при воздействии эмоциогенного видеоконтента у лиц с исходным парасимпатическим тонусом являются показатели временного анализа RMSSD и pNN50, независимо от валентности видеоролика; у лиц с исходным симпатическим тонусом – показатели математического анализа – индекс вегетативного равновесия (ИВР) и ИН при восприятии видеоролика, индуцирующего отрицательные эмоции. Выявленные особенности вегетативного обеспечения организма на этапах, следующих после воздействия эмоциогенного фактора, характерны для состояния стресс-реактивного размышления, или руминации. У лиц с исходным парасимпатическим тонусом регистрировалось значимое увеличение ЧСС, у лиц с исходным симпатическим тонусом – характерное увеличение вагусной активности на фоне увеличения показателей SDNN и pNN50. Выводы. Эффекты воздействия эмоциогенного фактора на организм, выраженные в особенностях реактивности автономной нервной системы, должны оцениваться с учетом исходного вегетативного тонуса обследуемых, степени вариативности, интенсивности изменений, а также чувствительности показателей вариабельности сердечного ритма. Ключевые слова: реактивность, автономная нервная система, вариабельность сердечного ритма, эмоциогенный фактор, видеоконтент, руминация, студенты.

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