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SciELO - Scientific Electronic Library Online (52.375 recursos)
SciELO (Scientific Electronic Library Online) is an electronic library covering a selected collection of Brazilian scientific journals. The objective of the site is to implement an electronic virtual library, providing full access to a collection of serial titles, a collection of issues from individual serial titles, as well as to the full text of articles. The project envisages the development of a common methodology for the preparation, storage, dissemination and evaluation of scientific literature in electronic format.

Mostrando recursos 1 - 20 de 1.976

1. Glutamatergic transmission in the nucleus tractus solitarii: from server to peripherals in the cardiovascular information superhighway - Talman,W.T.
Afferent nerves carrying signals from mechanoreceptors in the aortic arch and carotid sinus terminate predominantly in the nucleus tractus solitarii (NTS).

2. Anhydrobiosis in yeast: activation effect - Rapoport,A.I.; Khroustalyova,G.M.; Kuklina,E.N.
Intracellular substances released into the medium during rehydration of dry yeast cells can significantly improve the quality of a synthetic medium.

3. Optimized Fast-FISH with a-satellite probes: acceleration by microwave activation - Durm,M.; Haar,F.- M.; Hausmann,M.; Ludwig,H.; Cremer,C.
It has been shown for several DNA probes that the recently introduced Fast-FISH (fluorescence in situ hybridization) technique is well suited for quantitative microscopy.

4. Single-step purification of crotapotin and crotactine from Crotalus durissus terrificus venom using preparative isoelectric focusing - Aguiar,A.S.; Melgarejo,A.R.; Alves,C.R.; Giovanni-De-Simone,S.
We describe the isolation of crotoxin, a presynaptic B-neurotoxin, as well as its subunits B (crotactine) and A (crotapotin) from lyophilized Crotalus durissus terrificus venom by a single-step preparative isoelectric focusing procedure.

5. Complications of surgical treatment of cervical carcinoma - Abrão,F.S.; Breitbarg,R.C.; Oliveira,A.T.; Vasconcelos,F.A.
The morbidity rate was 37.5% and the mortality rate 0.6%.

6. Changes in the electrophysiological parameters of the posterior intestine of Anguilla anguilla (Pisces) induced by oxytocin, urotensin II and aldosterone - Baldisserotto,B.; Mimura,O.M.
UII reduced SCC and TPD at concentrations of 10 nM, 50 nM and 100 nM (to 85% of control values), but increased these parameters at the concentration of 500 nM (to 115% of control values).

7. A mutant cell line partially responsive to both IFN-a and IFN-g - Bonjardim,C.A.
A recessive mutant cell line, B7, which is partially responsive to both interferon (IFN)- a and IFN-g is described.

8. Association of leprosy with HLA-DR2 in a Southern Brazilian population - J.E.L.,Visentainer; Tsuneto,L.T.; Serra,M.F.; Peixoto,P.R.F.; Petzl-Erler,M.L.
One hundred and twenty-one patients and 147 controls were typed for HLA-A, B, Cw, DR and DQ.

9. Behavioral effects of "vehicle" microinjected into the dorsal periaqueductal grey of rats tested in the elevated plus maze - Matheus,M.G.; de-Lacerda,J.C.; Guimarães,F.S.
To investigate the behavioral effects of different vehicles microinjected into the dorsal periaqueductal grey (DPAG) of male Wistar rats, weighing 200-250 g, tested in the elevated plus maze, animals were implanted with cannulas aimed at this structure.

10. Correlations between ANP concentrations in atria, plasma and cerebral structures and sodium chloride preference in Wistar rats - Glass,H.; Gutkowska,J.; Favaretto,A.L.V.; Antunes-Rodrigues,J.
We determined whether ANP (atrial natriuretic peptide) concentrations, measured by radioimmunoassay, in the ANPergic cerebral regions involved in regulation of sodium intake and excretion and pituitary gland correlated with differences in sodium preference among 40 Wistar male rats (180-220 g).

11. Ethanol-induced hypothermia in rats is antagonized by dexamethasone - Carreño,C.F.T.; Ferreira,V.M.M.; Morato,G.S.
The effect of dexamethasone on ethanol-induced hypothermia was investigated in 3.5-month old male Wistar rats (N = 10 animals per group).

12. Distribution of AMPA-type glutamate receptor subunits in the chick visual system - Pires,R.S.; Britto,L.R.G.
In the present study, subunit-specific antisera were used to determine the distribution of the AMPA-type glutamate receptor subunits GluR1-4 in retinorecipient areas of the chick brain.

13. Serotonergic neurons in the caudal raphe nuclei discharge in association with activity of masticatory muscles - Ribeiro-do-Valle,L.E.
The objective of the present study was to investigate the possibility that the activity of these serotonergic neurons is related to activity of masticatory muscles.

14. Inhibition of lipid peroxidation and iron (II)-dependent DNA damage by extracts of Pothomorphe peltata (L.) Miq - Desmarchelier,C.; Mongelli,E.; Coussio,J.; Ciccia,G.
Finally, an assay of DNA sugar damage induced by Fe (II) salt was used to determine the capacity of the extracts to suppress the oxidative degradation of DNA.

15. Role of nitric oxide and superoxide in Giardia lamblia killing - Fernandes,P.D.; Assreuy,J.
Giardia lamblia trophozoites were incubated for 2 h with activated murine macrophages, nitric oxide (NO) donors or a superoxide anion generator (20 mU/ml xanthine oxidase plus 1 mM xanthine).

16. Cyclosporin inhibits hyperalgesia and edema in arthritic rats: role of the central nervous system - Francischi,J.N.; Pereira,L.S.M.; Castro,M.S.
Since arthritis induced by Mycobacterium products (adjuvant) in rats is considered to be immunologically driven, the objective of the present study was to determine if the immunosuppressor drug cyclosporin could affect hindpaw edema and joint hyperalgesia simultaneously.

17. Effects of bromocriptine on serum prolactin levels, pituitary weight and immunoreactive prolactin cells in estradiol-treated ovariectomized rats: an experimental model of estrogen-dependent hyperprolactinemia - Ribeiro,M.F.; Spritzer,P.M.; Barbosa-Coutinho,L.M.; Oliveira,M.C.; Pavanato,M.A.; Silva,I.S.B.; Reis,F.M.
The present study was designed to assess the effects of bromocriptine, a dopamine agonist, on pituitary wet weight, number of immunoreactive prolactin cells and serum prolactin concentrations in estradiol-treated rats.

18. Baroreflex and chemoreflex dysfunction in streptozotocin-diabetic rats - Dall'Ago,P.; Fernandes,T.G.; Machado,U.F.; Belló,A.A.; Irigoyen,M.C.
The aim of the present study was to analyze changes in heart rate (HR) and arterial pressure (AP) as well as baroreflex and chemoreflex sensitivity in STZ-induced diabetic male Wistar rats (STZ, 50 mg/kg, iv, 15 days).

19. Cardiovascular, respiratory and metabolic responses to temperature and hypoxia of the winter frog Rana catesbeiana - Rocha,P.L.; Branco,L.G.S.
The objective of the present study was to determine the effects of hypoxia and temperature on the cardiovascular and respiratory systems and plasma glucose levels of the winter bullfrog Rana catesbeiana.

20. Thyroid function in post-weaning rats whose dams were fed a low-protein diet during suckling - Ramos,C.F.; Lima,A.P.S.; Teixeira,C.V.; Brito,P.D.; Moura,E.G.
Two hours before sacrifice of pups aged 21, 30 and 60 days, a tracer dose (0.6 µCi) of 125I was injected (ip) into each animal.

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