Abstract

In the present research project the influence of protein Kinases C and A (cAMP dependent protein kinase) on junctional conductance of isolated rat heart cell pairs will be investigated. Activators of pKC, such as vasopressin, phorbol ester, diacylglycerol, oleoyl-2-acetylglycerol, as well as inhibitors of the kinase (pseudosubstrate or staurosporine) will be used. The influence of PKA on junctional conductance will be further investigated by dialyzing the catalytic subunit of PKA or the protein kinase inhibitors into the cells or adding isoproterenol and forskolyn to the bath. Moreover, the role of G proteins on junctional conductance will be investigated by administering GTP, GDP-B-S and other compounds inside the cells. The interactions between PKA and PKC on the control of junctional conductance will be also investigated. These studies will provide new and valuable knowledge of the physiological and pathological processes involved in the regulation of cell communication in heart.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Minority Biomedical Research Support - MBRS (S06)
Project #
5S06GM008224-11
Application #
3734605
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
11
Fiscal Year
1995
Total Cost
Indirect Cost

  Institution

Name
University of Puerto Rico Med Sciences
Department
Type
DUNS #
City
San Juan
State
PR
Country
United States
Zip Code
00936

  Publications

Rijpma, Sanna R; van der Velden, Maarten; González-Pons, Maria et al. (2016) Multidrug ATP-binding cassette transporters are essential for hepatic development of Plasmodium sporozoites. Cell Microbiol 18:369-83
Padín-Irizarry, Vivian; Colón-Lorenzo, Emilee E; Vega-Rodríguez, Joel et al. (2016) Glutathione-deficient Plasmodium berghei parasites exhibit growth delay and nuclear DNA damage. Free Radic Biol Med 95:43-54
Jardón, Javier; Izquierdo, Natalio J; Renta, Jessica Y et al. (2016) Ocular Findings in Patients with the Hermansky-Pudlak Syndrome (Types 1 and 3). Ophthalmic Genet 37:89-94
Rivera-Peña, Bianca; Ruíz-Fullana, Francisco J; Vélez-Reyes, Germán L et al. (2016) HPV-16 infection modifies overall survival of Puerto Rican HNSCC patients. Infect Agent Cancer 11:47
Velásquez-Martínez, Maria C; Vázquez-Torres, Rafael; Rojas, Legier V et al. (2015) Alpha-1 adrenoreceptors modulate GABA release onto ventral tegmental area dopamine neurons. Neuropharmacology 88:110-21
Vega-Rodríguez, Joel; Pastrana-Mena, Rebecca; Crespo-Lladó, Keila N et al. (2015) Implications of Glutathione Levels in the Plasmodium berghei Response to Chloroquine and Artemisinin. PLoS One 10:e0128212
Zenón, Frances; Cantres-Rosario, Yisel; Adiga, Radhika et al. (2015) HIV-infected microglia mediate cathepsin B-induced neurotoxicity. J Neurovirol 21:544-58
Rosas, Odrick R; Torrado, Aranza I; Santiago, Jose M et al. (2014) Long-term treatment with PP2 after spinal cord injury resulted in functional locomotor recovery and increased spared tissue. Neural Regen Res 9:2164-73
Mosquera, Laurivette; Colón, Jennifer M; Santiago, José M et al. (2014) Tamoxifen and estradiol improved locomotor function and increased spared tissue in rats after spinal cord injury: their antioxidant effect and role of estrogen receptor alpha. Brain Res 1561:11-22
Hodakoski, Cindy; Hopkins, Benjamin D; Barrows, Douglas et al. (2014) Regulation of PTEN inhibition by the pleckstrin homology domain of P-REX2 during insulin signaling and glucose homeostasis. Proc Natl Acad Sci U S A 111:155-60

Showing the most recent 10 out of 174 publications