Hemodynamic effects of the light stabilizer tinuvin 770 in dogs in vivo

Miklos Krepuska, Marta Hubay, E. Zima, Aniko Kovacs, V. Kékesi, H. Kalász, Brigitta Szilagyi, B. Merkely, P. Sótónyi

Research output: Article

1 Citation (Scopus)

Abstract

Introduction: Tinuvin 770 [bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, Ciba-Geigy, Basel, Switzerland] is a UV light stabilizer that is a component of many plastic materials used world-wide in the medical and food industries. We report on the acute hemodynamic effects of Tinuvin 770 examined in dogs. Materials and Methods: Tinuvin 770 was dissolved in a mixture of saline and ethanol (1:1 v/v) and was administered to 12 intravenously narcotized and respirated dogs in increasing doses (T1-T7: 1, 3.3, 6.6, 10, 33.3, 66.6 and 100 mg, respectively). The doses were given as bolus injections over a three minute period, and the effects were recorded for 12 minutes. The vehicle was used as a control. Hemodynamic parameters (heart rate, blood pressure, end-diastolic pressure, dp/dt, cardiac output) and ECG were monitored continously. Results: At doses T1-T4, systolic and diastolic blood pressures, mean pressure and ventricular contractility were significantly decreased without significant changes in cardiac output, heart rate, or PQ interval. At doses T5 and T6, declines in blood pressure and myocardial contractility were observed. At doses T6 and T7, heart rate and PQ interval decreased substantially. Irreversible circulatory failure occured in one dog after administering dose T6 and in 8 dogs following dose T7. Conclusion: Tinuvin 770 induces acute hemodynamic alterations. In lower doses, it causes peripheral vasodilatation, however at higher doses acute cardiac failure occured. Plastics containing Tinuvin 770 should be used with care in medical practice and the laboratory.

Original languageEnglish
Pages (from-to)88-97
Number of pages10
JournalOpen Medicinal Chemistry Journal
Volume12
Issue number1
DOIs
Publication statusPublished - jan. 1 2018

Fingerprint

Hemodynamics
Dogs
Light
Blood Pressure
Heart Rate
Cardiac Output
Plastics
Food Industry
Ventricular Pressure
Ultraviolet Rays
Switzerland
Vasodilation
Tinuvin 770
Shock
Electrocardiography
Ethanol
Heart Failure
Injections

ASJC Scopus subject areas

  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery

Cite this

Hemodynamic effects of the light stabilizer tinuvin 770 in dogs in vivo. / Krepuska, Miklos; Hubay, Marta; Zima, E.; Kovacs, Aniko; Kékesi, V.; Kalász, H.; Szilagyi, Brigitta; Merkely, B.; Sótónyi, P.

In: Open Medicinal Chemistry Journal, Vol. 12, No. 1, 01.01.2018, p. 88-97.

Research output: Article

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abstract = "Introduction: Tinuvin 770 [bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, Ciba-Geigy, Basel, Switzerland] is a UV light stabilizer that is a component of many plastic materials used world-wide in the medical and food industries. We report on the acute hemodynamic effects of Tinuvin 770 examined in dogs. Materials and Methods: Tinuvin 770 was dissolved in a mixture of saline and ethanol (1:1 v/v) and was administered to 12 intravenously narcotized and respirated dogs in increasing doses (T1-T7: 1, 3.3, 6.6, 10, 33.3, 66.6 and 100 mg, respectively). The doses were given as bolus injections over a three minute period, and the effects were recorded for 12 minutes. The vehicle was used as a control. Hemodynamic parameters (heart rate, blood pressure, end-diastolic pressure, dp/dt, cardiac output) and ECG were monitored continously. Results: At doses T1-T4, systolic and diastolic blood pressures, mean pressure and ventricular contractility were significantly decreased without significant changes in cardiac output, heart rate, or PQ interval. At doses T5 and T6, declines in blood pressure and myocardial contractility were observed. At doses T6 and T7, heart rate and PQ interval decreased substantially. Irreversible circulatory failure occured in one dog after administering dose T6 and in 8 dogs following dose T7. Conclusion: Tinuvin 770 induces acute hemodynamic alterations. In lower doses, it causes peripheral vasodilatation, however at higher doses acute cardiac failure occured. Plastics containing Tinuvin 770 should be used with care in medical practice and the laboratory.",
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T1 - Hemodynamic effects of the light stabilizer tinuvin 770 in dogs in vivo

AU - Krepuska, Miklos

AU - Hubay, Marta

AU - Zima, E.

AU - Kovacs, Aniko

AU - Kékesi, V.

AU - Kalász, H.

AU - Szilagyi, Brigitta

AU - Merkely, B.

AU - Sótónyi, P.

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