Document Detail


Arrabidaea chica extract improves gait recovery and changes collagen content during healing of the Achilles tendon.
MedLine Citation:
PMID:  23047299     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
INTRODUCTION: Tendon lesions are still a serious clinical problem. The leaves of the Bignoniaceae Arrabidaea chica (Humb. & Bonpl.) B. Verlot. (syn. Bignonia chica (Bonpl.)) have been used in traditional medicine and described in the literature for its healing properties. However, no study has shown the effects of A. chica during tendon healing. The aim of this study was to investigate the healing properties of the A. chica leaves extract on tendons after partial transection. METHODS: A partial transection in the tension region of the Achilles tendon of rats was performed with subsequent posterior topical application of A. chica extract (2.13g/mL in 0.85% saline solution) at the site of the injury. The animals (n=154) were separated into 7 groups: N - rats with tendons without transection; S7, S14 and S21 - rats with tendons treated with topical applications of saline for 7 days and sacrificed on the 7th, 14th and 21st days after surgery, respectively; A7, A14 and A21 - rats with tendons treated with topical applications of the plant extract. The transected regions of the tendons were analyzed through biochemical, morphological and functional analyses. To evaluate the type and concentration of collagen, Western blotting for collagen types I and III was performed, and the hydroxyproline concentration was determined. The participation of metalloproteinases (MMP)-2 and -9 during tendon remodelling was investigated through zymography. Gait recovery was analyzed using the catwalk system. The organization of the extracellular matrix and morphometry were detected in sections stained with haematoxylin-eosin. RESULTS: The application of A. chica extract in the region of tendon injury led to an increase in the amount of hydroxyproline (mg/g tissue) on the 7th (91.5±18.9) and 21st (95.8±11.9) days after the tendon lesion relative to the control groups treated with saline (S7: 75.2±7.2; and S21: 71.9±7.9). There were decreases in collagen types I and III (as determined by densitometry) in the groups treated with the plant extract 7 days after injury (type I: 103.9±15.9; type III: 206.3±8.1) compared to the saline-treated groups (type I: 165.2±31.1; type III: 338.6±48.8). The plant extract stimulated the synthesis of MMP-2 on the 21st day after the lesion and decreased the amount of latent and active isoforms of MMP-9 on the 14th day. Analysis by the catwalk system (max contact intensity) showed that the A. chica extract improved the gait of rats on the 7th day of the healing process when compared to the saline group. CONCLUSIONS: The use of A. chica extract during the healing process of the tendon leads to an increase in collagen content and improved gait recovery. Further studies will be performed to analyze the effect of this plant extract on the organization of the collagen bundles of tendons after lesions and to study its probable anti-inflammatory effect.
Authors:
A A Aro; G F Simões; M A M Esquisatto; M A Foglio; J E Carvalho; A L R Oliveira; L Gomes; E R Pimentel
Related Documents :
8866649 - Immunohistochemical localization and quantitative analysis of cellular glutathione pero...
10693979 - Dose response of ethanol ingestion on antioxidant defense system in rat brain subcellul...
17907099 - Beneficial effects of spironolactone on glomerular injury in streptozotocin-induced dia...
24900949 - Nitric oxide synthase is necessary for normal urogenital development.
10954129 - Acute effects of estradiol and of diethylstilbestrol: pro- or antioxidant potential?
20654459 - Acrylamide toxicity in isolated rat hepatocytes.
15020069 - Chronic morphine accelerates the progression of lipopolysaccharide-induced sepsis to se...
23313409 - Electrical stimulation of left anterior thalamic nucleus with high-frequency and low-in...
18093879 - Low nanomolar concentration of mercury chloride increases vascular reactivity to phenyl...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-6
Journal Detail:
Title:  Injury     Volume:  -     ISSN:  1879-0267     ISO Abbreviation:  Injury     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0226040     Medline TA:  Injury     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Structural and Functional Biology - Institute of Biology, State University of Campinas - UNICAMP, Campinas, SP, Brazil. Electronic address: andreaaro@ig.com.br.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Mindfulness trait, Eating Behaviours and Body Uneasiness: A Case-Control Study of Binge Eating Disor...
Next Document:  Mapping local optical axis in birefringent samples using polarization-sensitive optical coherence to...