Correction for Fares et al., Matrix Metalloproteinases 2 and 9 Are Differentially Expressed in Patients with Indeterminate and Cardiac Clinical Forms of Chagas Disease

Evaluation of matrix protein expression in cardiac spheroids. (A) Representative bands of matrix protein expression: collagen type I, fibronectin, laminin, MMP-2, and MMP-9. Membranes were reprobed with anti-GAPDH. (B) The matrix proteins were evaluated from cardiac spheroids incubated with sera from individuals from the NI group (white bars), patients from the IND group (gray bars), and patients from the CARD group (dark-gray bars). For collagen type I, fibronectin, and laminin, the number of patients was 10 for NI, 11 for IND, and 10 for CARD. For MMP-2 and MMP-9, the number of patients was 4 for NI, 8 for IND, and 7 for CARD. The data are expressed as the means of matrix protein expression plus standard errors. Densitometric histograms of the normalized levels of each protein related to GAPDH are shown. All experiments are presented in the figure and separated by dotted lines to represent different gels and for clear demonstration of all experiments performed. All GAPDH controls were run on the same gel for each experiment. The exposure was performed in distinct X-ray film and is shown separated by a dotted line. Significant differences (P < 0.05) in the charts are identified by connecting lines and asterisks for comparisons between the groups.