Background: Colorectal cancer (CRC) is a very common cancer worldwide. CRC is characterized by some changes in the expression of oncogenic and tumor suppressor genes. These changes are associated with dysregulation of non-coding RNAs, including long non-coding RNAs (lncRNAs).
View Article and Find Full Text PDFLong non-coding RNAs (lncRNAs) play a significant biological role in the regulation of various cellular processes such as cell proliferation, differentiation, apoptosis and migration. In various malignancies, lncRNAs interplay with some main cancer-associated signaling pathways, including the Hippo signaling pathway to regulate the various cellular processes. It has been revealed that the cross-talking between lncRNAs and Hippo signaling pathway involves in gastrointestinal (GI) cancers development and progression.
View Article and Find Full Text PDFBackground And Objectives: Keloids are disfiguring, proliferative scars that are a pathologic response to cutaneous injury. An organotypic tissue culture system (the Raft model 1-10) was used to investigate the feasibility of using photodynamic therapy (PDT) as an adjunctive therapy to treat keloids following surgical excision. The Raft co-culture system mimics skin by layering keratinocytes on top of fibroblasts embedded in a collagen matrix.
View Article and Find Full Text PDFArch Otolaryngol Head Neck Surg
June 2005
Objective: To evaluate the efficacy of optical coherence tomography in differentiating between several simulated subglottic lesions, using an ex vivo rabbit laryngotracheal model.
Design: Laryngotracheal complexes were harvested from euthanized rabbits and divided into the following 4 groups: (1) control, (2) submucosal collagen injection (simulating scar formation), (3) dehydration and rehydration (simulating edema), and (4) repeated intubation trauma. The subglottic region was imaged using optical coherence tomography.
Int J Pediatr Otorhinolaryngol
April 2005
Congenital lobar emphysema (CLE) is an uncommon but potentially life threatening pulmonary abnormality affecting infants. Patients often present within the first 6 months of life with recurrent respiratory distress as a result of hyperinflation of the affected pulmonary lobe, and resultant near total collapse of normal lung parenchyma. We present a case of a 2-month-old infant with recurrent admissions for respiratory distress.
View Article and Find Full Text PDFOtolaryngol Head Neck Surg
March 2005
Objective: To evaluate and optimize the design of a removable and inexpensive internal stabilization device to reduce the effect of intention tremor during laryngeal microsurgery.
Study Design And Setting: In this laboratory investigation, stabilizers were designed and constructed to allow a nonobstructing view of the surgical field, permit simple insertion and removal, and accommodate microsurgical instruments. Prototype stabilizers were tested by using a Dedo laryngoscope, a measurement grid, and video recording equipment, which recorded instrument tremor within the magnified operative field for later analysis.
Background And Objectives: To evaluate the long-term effect of laser cartilage reshaping on rabbit nasal septal cartilage viability and mechanical integrity in an in vivo model.
Study Design/materials And Methods: In vivo animal investigation. Rabbit septal cartilage specimens were laser (Nd:YAG, lambda = 1.
Background And Objectives: The smaller anatomy and limited access to instrumentation pose a challenge to the pediatric airway surgeon. The enhanced precision and ability to photocoagulate tissue while operating with the laser enhances the surgeon's ability to successfully treat unique pediatric conditions.
Study Design/materials And Methods: A comprehensive literature review was performed using the Medline (1995-2004) database.
Objectives: To assess the feasibility of reshaping cartilage using radiofrequency (RF) heating, and to examine the effects of this process on tissue biophysical properties (optical and thermal) and cellular viability.
Methods: Mechanically deformed porcine septal cartilage was reshaped using 2 RF-generating devices. We performed dynamic measurements of tissue thermal and optical properties while heating cartilage with one of these devices.
Objective: To find a parameter that would discriminate between the patients with idiopathic interstitial pneumonia who survived to undergo transplantation and those who died while waiting to undergo transplantation.
Methods: A retrospective review was performed of all lung transplant referrals for idiopathic interstitial pneumonia that were listed with United Network for Organ Sharing at the University of California San Diego from January 1990 to February 1999. Of the 331 patients who were listed, 48 met the eligibility criteria.
Objective: To introduce the results of a cost-benefit analysis comparing an office-based low-cost technique for producing research posters versus conventional methods.
Study Design: Cost-benefit analysis.
Methods: The average cost for manufacturing a 4' x 6' poster using university-based and commercial reprographic centers (from 10 different institutions and cities) was determined through a phone survey.