J M Téllez

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Membrane potential across the plasma membrane (psi) of human sperm was determined by measuring the accumulation of triphenylmethylphosphonium (TPMP+). Washed sperm of fertile or infertile men were suspended, incubated in low-K+ and high-Na+ or high-K+ and low-Na+ medium, and allowed to take up the cation TPMP+ to a steady state (20 min at 37 degrees C).(More)
During ageing, the function of sinoatrial node (SAN), the pacemaker of the heart, declines, and the incidence of sick sinus syndrome increases markedly. The aim of the study was to investigate structural and functional remodelling of the SAN during ageing. Rats, 3 and 24 months old (equivalent to young adult and approximately 69-year-old humans), were(More)
In obstetric patients undergoing postpartum tubal ligation, we found that metoclopramide produced dose-dependent prolongation of suxamethonium-induced neuromuscular block. Mean block times after suxamethonium 1 mg kg-1 were 8.0 min, 9.83 min and 12.45 min for control and metoclopramide 10 mg and metoclopramide 20 mg groups, respectively. A laboratory study(More)
We describe a case of postpartum ruptured dissecting aneurysm of the thoracic aorta, unrelated to the anaesthetic management with extradural anaesthesia. This complication is discussed in detail, as the anaesthetist may be the specialist required to respond to the common presenting symptom of severe back pain.
We report here a young female who underwent a successful deceased donor liver transplant for hepatic vein thrombosis. Five years after transplantation she developed postpartum atypical hemolytic uremic syndrome (aHUS). She did not recover renal function. Mutation screening of complement genes in her DNA did not show any abnormality. Mutation screening of(More)
We presented two cases of falsely elevated CK-MB due to the presence of a type 2 macro CK, showed by isoenzymes electrophoresis. The association of this CK-MB falsely elevated with some digestive diseases are frequent. Quantification of CK isoenzymes by electrophoresis could be indicated in those cases in which the clinical course or ECG changes do not(More)
The cytotoxic effect of five flavonoids isolated from the aerial parts of the Asteraceae family of plants were studied in vitro using LLC-MK2 and C6 glial cells. Agehoustin A was shown to be cytotoxic for both cells (71% or 67% cell death). Agehoustin B and artemetin, which lack a methoxy group at C-8 (RI), were not cytotoxic for the cells (19% and 16% cell(More)
Estrogen receptor levels were determined in nuclear matrix of human spermatozoa of normospermic fertile men and idiopathic infertile men. In noncapacitated sperm cells, the distribution of the estrogen receptor in normospermic fertile men was present in 50% of the cases, whereas in idiopathic infertile men was present in 19% of the cases. In capacitated(More)