Acupuncture Stimulation at Taixi Point: Effect on Technetium-99m Methylenediphosphonate Bioavailability in Rats

Souza, Daiana de; Souza, Raphael Sancho Sisley de; Manoel, Cristiano Viana; Pereira, Maria Betânia Almeida; Carmo, Fagner Santos do; Fonseca, Adenilson de Souza da; Bernardo-Filho, Mário

doi:10.1089/acu.2011.0791

Cited by 2 publications

(1 citation statement)

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“…A relevant consideration is that the number of experimental models for the study of the various properties related with the herbal medicines used in the TCM is still limited and the development of new and suitable models is thus highly desired. Investigations using radionuclides have been worthwhile to aid the understanding of several biological mechanisms and some of them have been used to study procedures used in the TCM, such as acupuncture [15,37,38].…”

Section: Discussionmentioning

confidence: 99%

An aqueous extract of Liu Wei Di Huang Wan alters the labeling of blood constituents with Technetium-99m

et al. 2013

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The Liu Wei Di Huang Wan is a formula of a traditional Chinese medicine that is used to treat asthma patients and has been shown to have several important properties, such as antioxidant and free radical scavenging activities. The influence of an extract of Liu Wei Di Huang Wan on the labeling of blood constituents with technetium-99m was investigated. Anticoagulated blood (Wistar rats) was incubated with the extract, stannous chloride and technetium-99m, as sodium pertechnetate. Samples were centrifuged and aliquots of plasma and blood cells were separated and precipitated with trichloroacetic acid, to obtain soluble and insoluble fractions of the blood constituents. The percentage of radioactivity (%ATI) in all the fractions was determined. The analysis of the results shows that the extract at the highest concentration used (70 mg/mL) decreased significantly (P<0.05) the %ATI (from 96.48 ± 1.19 to 54.46 ± 7.38) on blood cells compartment, (from 81.11 ± 4.15 to 61.33 ± 4.74) on insoluble fractions of blood cells and (from 65.91 ± 2.44 to 13.15 ± 3.62) on insoluble fractions of plasma. In conclusion, the results suggest that the substances present on this extract can alter this labeling process, probably due to (i) redox properties (antioxidant and chelator activities) and/or (ii) specific actions in the binding sites where the 99mTc would be bound on the blood constituents. As a consequence, precaution is suggested on the interpretation of the nuclear medicine results from performed with blood constituents labeled with 99m Tc in patients that have undertaken LWDHW, although the current findings were obtained in experimental animal models.

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Section: Discussionmentioning

confidence: 99%