Research Articles

2019  |  Vol: 5(5)  |  Issue: 5(September- October)  |  https://doi.org/10.31024/ajpp.2019.5.5.18
Determination of vascular responses to manual PC6 acupuncture in subjects healthy and diabetics by the second derivative of the finger photoplethysmogram waveform

José F. Rivas-Vilchis1*, Fernando Hernández Sánchez2, Eduardo Gámez-Valdés3

1Especialización en Acupuntura y Fitoterapia, División de Ciencias Biológicas y de la Salud, Unidad Iztapalapa, Universidad Autónoma Metropolitana

2Unidad de Materiales, Centro de Investigación Científica de Yucatán, AC. Mérida, Yucatán

3Departamento de Atención a la Salud, Unidad Xochimilco, Universidad Autónoma Metropolitana, Ciudad de México, México

*Address for corresponding author

José F. Rivas-Vilchis

Professor, Especialización en Acupuntura y Fitoterapia, División de Ciencias Biológicas y de la Salud, Unidad Iztapalapa, Universidad Autónoma Metropolitana, Ciudad de México, México 09340

Abstract

Background: Diabetes is known to be associated with increased arterial stiffness. Indices obtained from the second derivative of photoplethysmogram (SDPTG) have been proposed to characterize vascular aging and arterial rigidity. Pericardium 6 (PC6) is an acupoint that has been shown to improve cardiovascular functioning. Objective: To assess if manual acupuncture in PC6 modifies the SDPTG indices in type 2 diabetic subjects compared to healthy subjects. Materials and methods: AGI, b/a, and d/a indices based on the wave components of SDPTG of healthy subjects (n=15, 44.6 years old) versus type 2 diabetic subjects (n=15, 48.3 years old) were compared. The photoplethysmogram (PTG) was obtained by measuring infrared light transmission through the finger. Of each subject, a PTG registration 30 min long was obtained. PC6 right was stimulated by manual needling for 5 min (1-6 min). SDPTG indices were compared in each subject in the pre- versus post-acupuncture periods (1 versus 30 min, respectively). Results: At baseline, we found a significantly higher value of AGI in diabetic subjects (p= 0.002). Comparing pre- versus post- acupuncture periods, AGI improved significantly in diabetics subjects; and b/a and d/a did not modify significantly. Conclusion: This study provides evidence that manual acupuncture in PC6 can modify the SDPTG index related to arterial stiffness in subjects with type 2 diabetes. Clinical trials are needed to assess this acupuncture treatment for improving the arterial stiffness in diabetic subjects.

Keywords: acupuncture; type 2 diabetes; arterial stiffness; Pericardium 6

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