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J C McNamara

Explore the profile of J C McNamara including associated specialties, affiliations and a list of published articles. Areas
Snapshot
Articles 23
Citations 94
Followers 0
Related Specialties
Physiology
Biochemistry
Molecular Biology
Top 10 Co-Authors
F A Leone
R P M Furriel
D C Masui
F L M Mantelatto
H Barrabin
C F L Fontes
E C C Silva
H M Scofano
N M Belli
L C Salomao
Published In
Comp Biochem Physiol A Mol Integr Physiol
Gen Comp Endocrinol
Biol Bull
Comp Biochem Physiol B Biochem Mol Biol
Bull Environ Contam Toxicol
Affiliations
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Recent Articles
1.
Use of an Integrated Geochemical and Ecotoxicological Approach to Evaluate Sediment Metal Contamination in Three Protected Estuarine Areas Along the Coast of São Paulo State, Brazil
Capparelli M, McNamara J, Araujo G, Cruz A, Abessa D
Bull Environ Contam Toxicol . 2021 Jan; 106(2):355-362. PMID: 33392684
We compared sediment quality in estuaries at three locations along the coast of São Paulo State, Brazil, using geochemical analyses and whole sediment toxicity tests, during the southern summer and...
2.
Tissue Accumulation and the Effects of Long-Term Dietary Copper Contamination on Osmoregulation in the Mudflat Fiddler Crab Minuca rapax (Crustacea, Ocypodidae)
Capparelli M, McNamara J, Grosell M
Bull Environ Contam Toxicol . 2020 May; 104(6):755-762. PMID: 32394051
We examined copper accumulation in the hemolymph, gills and hepatopancreas, and hemolymph osmolality, Na and Cl concentrations, together with gill Na/K-ATPase and carbonic anhydrase activities, after dietary copper delivery (0,...
3.
The Ultrastructure of the Radial Neuromuscular System of the Jellyfish Liriope tetraphylla (Hydrozoa, Trachymedusae): Implications in Crumpling Behavior
Scemes E, McNamara J
Biol Bull . 2018 Jan; 181(3):474-483. PMID: 29304672
The ultrastructure of the radial neuromuscular system of the trachymedusa Liriope tetraphylla was examined to determine the morphological substrate underlying crumpling behavior--the folding of the margin into the subumbrellar cavity...
4.
The Route of Ion and Water Movements Across the Gill Epithelium of the Freshwater Shrimp Macrobrachium olfersii (Decapoda, Palaemonidae): Evidence From Ultrastructural Changes Induced by Acclimation to Saline Media
McNamara J, Lima A
Biol Bull . 2017 Jun; 192(2):321-331. PMID: 28581864
The ultrastructure of the pillar cells in the gill lamellae of the freshwater shrimp Macrobrachium olfersii was examined to evaluate the routes of salt and water movement across the gill...
5.
Na,K-ATPase activity and epithelial interfaces in gills of the freshwater shrimp Macrobrachium amazonicum (Decapoda, Palaemonidae)
Belli N, Faleiros R, Firmino K, Masui D, Leone F, McNamara J, et al.
Comp Biochem Physiol A Mol Integr Physiol . 2008 Dec; 152(3):431-9. PMID: 19100333
Diadromous freshwater shrimps are exposed to brackish water both as an obligatory part of their larval life cycle and during adult reproductive migration; their well-developed osmoregulatory ability is crucial to...
6.
The crustacean gill (Na+,K+)-ATPase: allosteric modulation of high- and low-affinity ATP-binding sites by sodium and potassium
Masui D, Silva E, Mantelatto F, McNamara J, Barrabin H, Scofano H, et al.
Arch Biochem Biophys . 2008 Sep; 479(2):139-44. PMID: 18796291
The blue crab, Callinectes danae, tolerates exposure to a wide salinity range employing mechanisms of compensatory ion uptake when in dilute media. Although the gill (Na+,K+)-ATPase is vital to hyperosmoregulatory...
7.
Regulation by the exogenous polyamine spermidine of Na,K-ATPase activity from the gills of the euryhaline swimming crab Callinectes danae (Brachyura, Portunidae)
Silva E, Masui D, Furriel R, Mantelatto F, McNamara J, Barrabin H, et al.
Comp Biochem Physiol B Biochem Mol Biol . 2008 Feb; 149(4):622-9. PMID: 18272416
Euryhaline crustaceans rarely hyporegulates and employ the driving force of the Na,K-ATPase, located at the basal surface of the gill epithelium, to maintain their hemolymph osmolality within a range compatible...
8.
Gill (Na+,K+)-ATPase in diadromous, freshwater palaemonid shrimps: species-specific kinetic characteristics and alpha-subunit expression
Santos L, Belli N, Augusto A, Masui D, Leone F, McNamara J, et al.
Comp Biochem Physiol A Mol Integr Physiol . 2007 May; 148(1):178-88. PMID: 17521934
To better comprehend physiological adaptation to dilute media and the molecular mechanisms underlying ammonia excretion in palaemonid shrimps, we characterized the (Na+,K+)-ATPase from Macrobrachium amazonicum gills, disclosing high- (K(0.5) =...
9.
K+ and NH4(+) modulate gill (Na+, K+)-ATPase activity in the blue crab, Callinectes ornatus: fine tuning of ammonia excretion
Garcon D, Masui D, Mantelatto F, McNamara J, Furriel R, Leone F
Comp Biochem Physiol A Mol Integr Physiol . 2007 Feb; 147(1):145-55. PMID: 17276114
To better comprehend the mechanisms of ionic regulation, we investigate the modulation by Na+, K+, NH4(+) and ATP of the (Na+, K+)-ATPase in a microsomal fraction from Callinectes ornatus gills....
10.
Long-term exposure of the freshwater shrimp Macrobrachium olfersii to elevated salinity: effects on gill (Na+,K+)-ATPase alpha-subunit expression and K+-phosphatase activity
Mendonca N, Masui D, McNamara J, Leone F, Furriel R
Comp Biochem Physiol A Mol Integr Physiol . 2006 Mar; 146(4):534-43. PMID: 16529963
The kinetic properties of a microsomal gill (Na+,K+)-ATPase from the freshwater shrimp, Macrobrachium olfersii, acclimated to 21 per thousand salinity for 10 days were investigated using the substrate p-nitrophenylphosphate. The...