Obstructive Sleep Apnea is associated with increased chemoreflex sensitivity in patients with metabolic syndrome (2013)
- Authors:
- USP affiliated authors: RONDON, MARIA URBANA PINTO BRANDÃO - EEFE ; NEGRÃO, CARLOS EDUARDO - EEFE
- Unidade: EEFE
- DOI: 10.5665/sleep.2298
- Subjects: DOENÇAS METABÓLICAS; SÍNDROMES DA APNEIA DO SONO; FISIOLOGIA (HUMANO)
- Language: Inglês
- Abstract: Objectives Obstructive sleep apnea (OSA) is often observed in patients with metabolic syndrome (MetS). In addition, the association of MetS and OSA substantially increases sympathetic nerve activity. However, the mechanisms involved in sympathetic hyperactivation in patients with MetS + OSA remain to be clarified. We tested the hypothesis that chemoreflex sensitivity is heightened in patients with MetS and OSA. Design Prospective clinical study. Participants Forty-six patients in whom MetS was newly diagnosed (ATP-III) were allocated into: (1) MetS + OSA (n = 24, 48 ± 1.8 yr); and (2) MetS – OSA (n = 22, 44 ± 1.7 yr). Eleven normal control subjects were also studied (C, 47 ± 2.3 yr). Measurements OSA was defined as an apnea-hypopnea index ≥ 15 events/hr (polysomnography). Muscle sympathetic nerve activity (MSNA) was measured by microneurography technique. Peripheral chemoreflex sensitivity was assessed by inhalation of 10% oxygen and 90% nitrogen (carbon dioxide titrated), and central chemoreflex sensitivity by 7% carbon dioxide and 93% oxygen. Results Physical characteristics and MetS measures were similar between MetS + OSA and MetS – OSA. MSNA was higher in MetS + OSA patients compared with MetS – OSA and C (33 ± 1.3 versus 28 ± 1.2 and 18 ± 2.2 bursts/min, P < 0.05). Isocapnic hypoxia caused a greater increase in MSNA in MetS + OSA than MetS – OSA and C (P = 0.03). MSNA in response to hyperoxic hypercapnia was greater in MetS + OSA compared with C (P = 0.005). Further analysis showed a significant association between baseline MSNA and peripheral (P < 0.01) and central (P < 0.01) chemoreflex sensitivity. Min ventilation in response to hyperoxic hypercapnia was greater in MetS + OSA compared with C (P = 0.001)Conclusion OSA increases sympathetic peripheral and central chemoreflex response in patients with MetS, which seems to explain, at least in part, the increase in sympathetic nerve activity in these patients. In addition, OSA increases ventilatory central chemoreflex response in patients with MetS
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Status: Artigo possui acesso gratuito no site do editor (Bronze Open Access) -
ABNT
TROMBETTA, Ivani C et al. Obstructive Sleep Apnea is associated with increased chemoreflex sensitivity in patients with metabolic syndrome. Sleep, v. 36, n. 1, p. 41-49b, 2013Tradução . . Disponível em: https://doi.org/10.5665/sleep.2298. Acesso em: 13 mar. 2026. -
APA
Trombetta, I. C., Maki-Nunes, C., Toschi-Dias, E., Alves, M. -J. N. N., Rondon, M. U., Cepeda, F. X., et al. (2013). Obstructive Sleep Apnea is associated with increased chemoreflex sensitivity in patients with metabolic syndrome. Sleep, 36( 1), 41-49b. doi:10.5665/sleep.2298 -
NLM
Trombetta IC, Maki-Nunes C, Toschi-Dias E, Alves M-JNN, Rondon MU, Cepeda FX, Drager LF, Braga AMFW, Lorenzi-Filho G, Negrão CE. Obstructive Sleep Apnea is associated with increased chemoreflex sensitivity in patients with metabolic syndrome [Internet]. Sleep. 2013 ; 36( 1): 41-49b.[citado 2026 mar. 13 ] Available from: https://doi.org/10.5665/sleep.2298 -
Vancouver
Trombetta IC, Maki-Nunes C, Toschi-Dias E, Alves M-JNN, Rondon MU, Cepeda FX, Drager LF, Braga AMFW, Lorenzi-Filho G, Negrão CE. Obstructive Sleep Apnea is associated with increased chemoreflex sensitivity in patients with metabolic syndrome [Internet]. Sleep. 2013 ; 36( 1): 41-49b.[citado 2026 mar. 13 ] Available from: https://doi.org/10.5665/sleep.2298 - Precisão do questionário de Berlim no diagnóstico da Apneia Obstrutiva do Sono em pacientes com Síndrome Metabólica
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