1
|
Alrahmany D, Pontiggia L, Ghazi I. Multi-drug resistant Acinetobacter baumannii infection, risk factors for mortality. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
2
|
Ghazi I, Pontiggia L, Alrahmany D, El Nekidy W. Clostridium difficile infection risk of recurrence and candidates for preventive therapy, a stewardship approach. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
3
|
Adams JL, Murray M, Patel N, Sawkin MT, Boardman RC, Pham C, Kaur H, Patel D, Yager JL, Pontiggia L, Baxter J. Comparative effectiveness of antiretroviral drug classes for the treatment of HIV infection in patients with high viral loads: a multicentre retrospective cohort study. HIV Med 2020; 22:28-36. [PMID: 32964664 DOI: 10.1111/hiv.12959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES We aimed to compare the effectiveness of antiretroviral therapy (ART) classes for achieving HIV RNA suppression to < 50 HIV-1 RNA copies/mL within 6 months of initiation with high viral loads (VLs). Secondary objectives were to compare viral suppression (VS) at 12 weeks and 12 months, partial HIV RNA suppression to < 200 copies/mL, time to VS, time to rebound, and change in CD4 cell count. METHODS This was a multicentre, retrospective, observational study. Adult patients were included if they initiated ART between January 2005 and December 2016 with a VL ≥ 100 000 copies/mL. RESULTS There were 220 patients included in the study. The median VL was 252 919 [interquartile range (IQR) 149 472-500 000] copies/mL. Nonnucleoside reverse transcriptase inhibitor (NNRTI) recipients were more likely to achieve VS by 6 months compared to those initiating ART containing protease inhibitors (PIs) [75.4% vs. 44.1%, respectively; odds ratio (OR) 3.34; 95% confidence interval (CI) 1.62-6.90] or integrase strand transfer inhibitors (INSTIs) (75.4% vs. 55.8%, respectively; OR 2.40; 95% CI 1.03-5.58). VS at 12 weeks was more frequent with INSTI-containing regimens than with PIs (28.9% vs. 9.0%, respectively; OR 4.10; 95% CI 1.69-9.92). VS at 12 months did not significantly differ between treatment regimens. Median time to complete VS for INSTI, PI and NNRTI recipients was 22.3 (95% CI 13.4-33), 30.1 (95% CI 25-36) and 19.9 (95% CI 16-22.3) weeks, respectively. There were no significant differences in time to viral rebound or change in CD4 cell counts. CONCLUSIONS Patients with high VLs initiated on NNRTIs were more likely to achieve VS by 6 months on ART compared to INSTI and PI recipients.
Collapse
Affiliation(s)
- J L Adams
- Philadelphia College of Pharmacy, University of the Sciences, Philadelphia, PA, USA.,Division of Infectious Diseases, Cooper University Hospital, Camden, NJ, USA
| | - M Murray
- Chicago College of Pharmacy, Midwestern University, Downers Grove, IL, USA.,Northwestern Memorial Hospital, Chicago, IL, USA
| | - N Patel
- Skaggs School of Pharmacy & Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA.,Albany Stratton VA Medical Center, Albany, NY, USA
| | - M T Sawkin
- KC CARE Health Center, Kansas City, MO, USA
| | - R C Boardman
- Philadelphia College of Pharmacy, University of the Sciences, Philadelphia, PA, USA
| | - C Pham
- Philadelphia College of Pharmacy, University of the Sciences, Philadelphia, PA, USA
| | - H Kaur
- Philadelphia College of Pharmacy, University of the Sciences, Philadelphia, PA, USA
| | - D Patel
- Philadelphia College of Pharmacy, University of the Sciences, Philadelphia, PA, USA
| | - J L Yager
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Aurora, CO, USA
| | - L Pontiggia
- Misher College of Arts and Sciences, University of the Sciences, Philadelphia, PA, USA
| | - J Baxter
- Division of Infectious Diseases, Cooper University Hospital, Camden, NJ, USA.,Cooper Medical School of Rowan University, Camden, NJ, USA
| |
Collapse
|
4
|
Zellers J, Cortes D, Corrigan P, Pontiggia L, Grävare Silbernagel K. Side-to-side differences in Achilles tendon geometry and mechanical properties following achilles tendon rupture. Muscles Ligaments Tendons J 2019. [DOI: 10.32098/mltj.03.2017.18] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J.A. Zellers
- Department of Physical Therapy, University of Delaware, Newark, DE, USA
| | - D.H. Cortes
- Department of Mechanical and Nuclear Engineering, Penn State University, State College, PA, USA
| | - P. Corrigan
- Department of Physical Therapy, University of Delaware, Newark, DE, USA
| | - L. Pontiggia
- Department of Mathematics, Physics, and Statistics, University of the Sciences, Philadelphia, PA, USA
| | | |
Collapse
|
6
|
Eichenberger A, Pontiggia L, Beer JH. [Antiaggregation: aspirin]. Ther Umsch 2003; 60:15-8. [PMID: 12638472 DOI: 10.1024/0040-5930.60.1.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Many randomized trials have shown aspirin as an effective antiplatelet drug for the secondary prevention of cardiovascular events. The NNT (number needed to treat) to prevent 1 vascular event is about 25. The NNH (number needed to harm) inducing one cerebral bleeding is about 1'000, to provoke one severe extracerebral bleeding about 100-200. The primary prevention can be recommended only for high risk patients for cardiovascular events (annual risk of 1-1.5% or more), calculated on the basis of the Framingham data, the Sheffield tables or in analysis of U.S. Preventive Services Task Force. The mechanisms of action, interactions and the "aspirin-resistance" are briefly discussed.
Collapse
|
7
|
Beer JH, Pederiva S, Pontiggia L. Genetics of platelet receptor single-nucleotide polymorphisms: clinical implications in thrombosis. Ann Med 2000; 32 Suppl 1:10-4. [PMID: 11209974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Several single-nucleotide polymorphisms (SNPs) of platelet receptors have been implicated to be associated with an increased risk of arterial thrombosis; this review focuses on the mechanisms and the clinical significance of two specific single-nucleotide polymorphisms, ie the GP IIIa L33P (=PlA1/2) and the GP Ia 807 C/T. Whereas the mechanism of P1A2 is thought to result from 'gain of receptor function' (and there is still considerable controversy on this subject), the collagen receptor SNP is associated with an increased number of receptors on the platelet surface, thus offering a plausible explanation for the observed increased interaction with collagen and the increased risk of thrombotic events reported in some studies but not in others. Overall, the presently available (controversial) data do still not allow the conclusion that the GPIIIa polymorphism alone represents a cardiovascular risk factor in the general population. A number of mechanisms and a series of studies suggest, however, that it may be a risk factor in certain subgroups of patients or in a number of clinical situations. The GPIa SNP discussed seems to be a mild risk factor that is particularly important in synergism with known risk factors, such as smoking, hypertension, diabetes or proteinuria, etc, which may enhance its contribution to the overall cardiovascular risk.
Collapse
Affiliation(s)
- J H Beer
- Department of Medicine, Kantonsspital, Baden, Switzerland.
| | | | | |
Collapse
|
8
|
Abstract
cGMP has been shown to either activate or inhibit Na,K-ATPase activity. Using mouse brain endothelial cells which express both ouabain-resistant alpha1 and ouabain-sensitive alpha2 and alpha3 isoforms, we show that cGMP reduces total Na,KATPase activity to about 58%. The inhibition is prevented by the protein kinase G (PKG)-specific inhibitor KT5823, indicating that cGMP-mediated activation of PKG leads to inhibition of the pump. A similar extent of inhibition is obtained with nitric oxide. cGMP-induced inhibition acts mainly on alpha1 isoforms but hardly affects alpha2/alpha3 isoforms. These data suggest that inhibition of Na,K-ATPase activity by cGMP occurs in an isoform-selective manner in brain endothelial cells.
Collapse
Affiliation(s)
- L Pontiggia
- Biochemistry I, Swiss Federal Institute of Technology, ETH Zentrum, Zürich
| | | | | |
Collapse
|
9
|
Abstract
Both subunits of the Na,K-ATPase are encoded by several genes giving rise to at least six isozymes. To examine whether beta isoforms assemble with alpha 1 in a selective manner, we have overexpressed wild-type and chimeric beta subunits in L929 cells and examined assembly as a function of resistance towards detergent-mediated dissociation. In the presence of digitonin all beta chimeras coimmunoprecipitate the endogenous alpha 1 subunit. Only beta proteins with the ectodomain of beta 1 coimmunoprecipitate alpha 1 in the presence of Triton X-100. All beta chimeras stimulate Na,K-ATPase activity in L929 cells. These data indicate that the beta subunit ectodomains mediate interactions with alpha 1 and influence the stability of this complex.
Collapse
Affiliation(s)
- L Pontiggia
- Swiss Federal Institute of Technology, ETH Center, Zurich, Switzerland
| | | |
Collapse
|