Autonomic Nervous System under Ketamine/xylazine and Pentobarbital Anaesthesia in a Wistar Rat Model: A Chronobiological View

Švorc, Pavol; Bačová, I.; Bužga, Marek

doi:10.14712/23362936.2014.25

Cited by 15 publications

(19 citation statements)

References 19 publications

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“…24 Increasing parasympathetic activity and suppressing sympathetic and baroreceptor activity under ketamine/xylazine anesthesia on rats were demonstrated. 25 Therefore decreasing neurogenic activity in zoletil-xylazine anesthetized animals obtained in our experiments might be a result of sympathetic activity suppression. Sedation under inhalational of nitrous oxide shifted the sympathetic-parasympathetic balance toward the parasympathetic dominance via suppression of sympathetic activity.…”

Section: Discussionmentioning

confidence: 59%

Anesthesia effects on the low frequency blood flow oscillations in mouse skin

Astashev

Serov

Tankanag

2018

Skin Research and Technology

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Section: Discussionmentioning

confidence: 59%

Anesthesia effects on the low frequency blood flow oscillations in mouse skin

Astashev

Serov

Tankanag

2018

Skin Research and Technology

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“…Svorc et al 22 corroborated this study: the authors concluded that anaesthesia increased HRV, with increased parasympathetic modulation of the heart determining the effect of ketamine/xylazine with pentobarbital.…”

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confidence: 60%

Non-linear indices of heart rate variability during endodontic treatment

et al. 2016

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Dental treatment promotes psychosomatic change that can influence the procedure and compromise the general well-being of the patient. In this context, it highlights the importance of evaluating the function of the autonomic nervous system in individuals undergoing endodontic treatment. Thus, this manuscript aimed to analyse cardiac autonomic modulation, through non-linear indices of heart rate variability (HRV) during endodontic treatment. Analysis of 50 subjects of either sex aged between 18 and 40 years diagnosed with irreversible pulp necrosis of lower molars undergoing endodontic treatment was undertaken. We carried out fractal and symbolic analysis of HRV, which was recorded in the first session of the endodontic treatment at four intervals: T1: 0-10 min before the onset of the treatment session; T2: 0-10 min after the application of anaesthesia; T3: throughout the period of treatment; and T4: 0-30 min after the end of the treatment session. There was reduction of α1 in T2 compared to T1 and T4 (p < 0.0001). The α2 index also reduced in T2 compared to T3 (p = 0.0035). There was an increase in the α1/α2 ratio in T4 compared to T2 and T3 (p = 0.0003). It was found that 0V% was significantly lower in T2 (p = 0.002), while 2UV% was significantly higher (p < 0.0001) when compared to other points in time. In conclusion, HRV is reduced during endodontic treatment, and after applying local anaesthetic the parasympathetic component of HRV increases. These data indicate that endodontic treatment acutely overcharges the heart, supporting the stress involved in this situation.

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“…However, the slightest alterations of HR were observed using ketamine and xylazine anesthesia [79]. Ketamine and xylazine were found to increase parasympathetic activity and suppress sympathetic activity in rat [80]. Since decreased parasympathetic and increased sympathetic activity were found in our study, we might assume that the effects of anesthesia were overridden by the HRV modulation provoked by DOX.…”

Section: Discussionmentioning

confidence: 60%

Cardiac autonomic modulation induced by doxorubicin in a rodent model of colorectal cancer and the influence of fullerenol pretreatment

et al. 2017

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The very effective anticancer drug doxorubicin (DOX) is known to have cardiotoxic side effects, which could be accompanied by autonomic modulation. Autonomic disbalance might even be an initiating mechanism underlying DOX-induced cardiotoxicity and can be studied noninvasively by the analysis of heart rate variability (HRV). A number of strategies have been assessed to predict chemotherapy-induced cardiac dysfunction while HRV, a potential detecting tool, has not yet been tested. Thus, we aimed to determine the effect of DOX treatment on HRV in a rat model of colorectal cancer. While pretreatment with fullerenol (Frl) acts protectively on DOX-induced cardiotoxicity, we aimed to test the effect of Frl pretreatment on DOX-induced HRV alterations. After the induction of colorectal cancer, adult male Wistar rats were treated with saline (n = 7), DOX (1.5 mg/kg per week, n = 7) or DOX after pretreatment with Frl (25 mg/kg per week, n = 7) for three weeks (cumulative DOX dose 4.5 mg/kg). One week after treatment rats were anaesthetized, standard ECG was measured and HRV was analyzed in time and frequency domain. During autopsy the intestines and hearts were gathered for biochemical analysis and histopathological examination. DOX treatment significantly decreased parasympathetically mediated high-frequency component (p<0.05) and increased the low-frequency component of HRV (p<0.05), resulting in an increased LF/HF ratio (p<0.05) in cancerous rats. When pretreated with Frl, DOX-induced HRV alterations were prevented: the high-frequency component of HRV increased (p<0.01), the low-frequency decreased (p<0.01), LF/HF ratio decreased consequently (p<0.01) compared to DOX only treatment. In all DOX-treated animals, disbalance of oxidative status in heart tissue and early myocardial lesions were found and were significantly reduced in rats receiving Frl pretreatment. Autonomic modulation accompanied the development of DOX-induced cardiotoxicity in rat model of colorectal cancer and was prevented by Frl pretreatment. Our results demonstrated the positive prognostic power of HRV for the early detection of DOX-induced cardiotoxicity.

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Autonomic Nervous System under Ketamine/xylazine and Pentobarbital Anaesthesia in a Wistar Rat Model: A Chronobiological View

Cited by 15 publications

References 19 publications

Anesthesia effects on the low frequency blood flow oscillations in mouse skin

Anesthesia effects on the low frequency blood flow oscillations in mouse skin

Non-linear indices of heart rate variability during endodontic treatment

Cardiac autonomic modulation induced by doxorubicin in a rodent model of colorectal cancer and the influence of fullerenol pretreatment

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