Several randomized studies have compared two procedures for extubation of the endotracheal tube from the trachea while maintaining invasive mechanical ventilation: extubation followed by placement of a laryngeal mask airway or withdrawal of the endotracheal tube until the cuff is at the level of the vocal cords.
Hypoxia-inducible factor-1α helps to promote and maintain an invasive phenotype.
Patch burning was found to reduce invasion in tallgrass prairies by maintaining the invasive species in a young and palatable stage of growth (Cummings et al. 2007).
Similarly, E-cadherin expression and desmosomal structure was maintained in invasive colon carcinomas and their metastases [43].
Additionally, expression of genes associated with xenobiotic metabolism/detoxification is a notable feature of CIS, and is largely maintained in invasive cancer.
When adult Swiss Webster mice were studied, even though a long-term mucosal colonization was maintained, no invasive disease could be observed [33].
NF- κB has a role in control of mesenchymal genes critical for promoting and maintaining an invasive phenotype.
Previous studies have shown that IMP3 is crucial for maintaining the invasive phenotype of cervical carcinoma [ 8], oral squamous cell carcinoma [ 21], hepatocellular carcinoma [ 29], and glioblastoma cells [ 9].
Notably, a three-fold reduction in cell invasion observed following PIP-knockdown indicates that the secretion of this protein has a key role in maintaining the invasive properties of molecular apocrine cells.
The presence of these alterations in both the invasive and adjacent premalignant lesions suggests that genes within these altered regions may alter the proliferation program or affect cell death, thereby contributing to and/or maintaining the invasive properties of these cells.
