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Articles by E Garcia
Total Records ( 3 ) for E Garcia
  D. M Faleck , K Ali , R Roat , M. J Graham , R. M Crooke , R Battisti , E Garcia , R. S Ahima and Y. Imai
 

The excess accumulation of lipids in islets is thought to contribute to the development of diabetes in obesity by impairing β-cell function. However, lipids also serve a nutrient function in islets, and fatty acids acutely increase insulin secretion. A better understanding of lipid metabolism in islets will shed light on complex effects of lipids on β-cells. Adipose differentiation-related protein (ADFP) is localized on the surface of lipid droplets in a wide range of cells and plays an important role in intracellular lipid metabolism. We found that ADFP was highly expressed in murine β-cells. Moreover, islet ADFP was increased in mice on a high-fat diet (3.5-fold of control) and after fasting (2.5-fold of control), revealing dynamic changes in ADFP in response to metabolic cues. ADFP expression was also increased by addition of fatty acids in human islets. The downregulation of ADFP in MIN6 cells by antisense oligonucleotide (ASO) suppressed the accumulation of triglycerides upon fatty acid loading (56% of control) along with a reduction in the mRNA levels of lipogenic genes such as diacylglycerol O-acyltransferase-2 and fatty acid synthase. Fatty acid uptake, oxidation, and lipolysis were also reduced by downregulation of ADFP. Moreover, the reduction of ADFP impaired the ability of palmitate to increase insulin secretion. These findings demonstrate that ADFP is important in regulation of lipid metabolism and insulin secretion in β-cells.

  B Chevalier , S Silber , S. J Park , E Garcia , G Schuler , H Suryapranata , J Koolen , K. E Hauptmann , W Wijns , M. C Morice , D Carrie , G. A van Es , H Nagai , D Detiege , D Paunovic , P. W Serruys and for the NOBORI 1 Clinical Investigators
 

Background— The newly developed Nobori coronary stent coated with a bioresorbable polymer, polylactic acid, and the antiproliferative agent Biolimus A9 has the potential to reduce restenosis by suppressing neointima formation.

Methods and Results— We conducted a randomized (2:1), controlled trial comparing the Biolimus A9-eluting stent Nobori and the paclitaxel-eluting stent Taxus Liberté, in 243 patients (153 Nobori and 90 Taxus) at 29 centers in Europe, Asia, and Australia. Patients with previously untreated lesions in up to 2 native coronary arteries were considered for enrollment. The primary end point was in-stent late loss at 9 months, whereas secondary end points included other quantitative coronary angiography parameters, such as in-segment late loss and the rate of restenosis as well as key intravascular ultrasound parameters. Clinical secondary end points were stent thrombosis and composite of major adverse cardiac events comprising death, myocardial infarction, and target vessel revascularization. At 9 months, the in-stent late loss was significantly lower in the Nobori group compared with the Taxus group (0.11±0.30 mm versus 0.32±0.50 mm) reaching both the primary hypothesis of noninferiority of Nobori stent versus Taxus Liberté stent (P<0.001) and the secondary hypothesis of superiority (P=0.001). This finding was confirmed by a significant reduction in binary restenosis from 6.2% in Taxus to 0.7% in Nobori (P=0.02) and neointimal volume obstruction, detected by intravascular ultrasound, from 5.5±7.2% in Taxus to 1.8±5.2% in Nobori (P=0.01). The major adverse cardiac events rate was 4.6% in the Nobori and 5.6% in the Taxus cohort of patients. The stent thrombosis rate was 0% in the Nobori arm and 4.4% in the Taxus arm.

Conclusions— The NOBORI 1 clinical trial confirmed its primary hypothesis—noninferiority of the Nobori Biolimus A9-eluting stent versus the Taxus Liberté stent in reducing neointimal proliferation. Both stents showed a low major adverse cardiac events rate in the studied population.

  M. S Todd , S Lalliss , E Garcia , T. M DeBerardino and K. L. Cameron
  Background

Two previous studies have examined the association between an increased posterior tibial slope and anterior cruciate ligament (ACL) injuries as measured on plain radiographs. The study results were contradictory, with 1 reporting a statistical difference and the other showing no association.

Purpose

To determine if there is a difference in posterior tibial slope angle between patients with a history of noncontact ACL injury and a control group with no history of ACL injury. A secondary objective was to examine differences in tibial slope angle between male and female subjects within each group.

Study Design

Case-control study; Level of evidence, 3.

Methods

We identified all noncontact ACL injuries that were treated operatively at the United States Military Academy, West Point, New York, from 2004 to 2007. We digitally measured the posterior tibial slope from plain film radiographs of 140 noncontact ACL injuries, stratified them by sex, and compared them with a control cohort of 179 patients and radiographs.

Results

Subjects in the noncontact ACL group had significantly greater slope angles (9.39° ± 2.58°) than did control subjects (8.50° ± 2.67°) (P = .003). The trend toward greater tibial slope angles in the noncontact ACL group was also observed when each sex was examined independently; however, the difference was only statistically significant for the female subjects between the injury and control groups (9.8° ± 2.6° vs 8.20° ± 2.4°) (P = .002).

Conclusion

Despite the identification of an increased posterior tibial slope as a possible risk factor for women, more research that combines the multifactorial nature of an ACL injury must be performed.

 
 
 
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