Implementation of a pre-operative decolonization protocol of Methicillin Resistance Staphylococcus aureus in elective orthopedic surgery at Manatí Medical Center: Pilot Study.

Methicillin-resistant Staphylococcus aureus (MRSA) is a strain of S. aureus that shows resistance to multiple antibiotics. Up to 30% of S.

The level of recognition of physical symptoms in patients with a major depression episode in the outpatient psychiatric practice in Puerto Rico: an observational study.

Background: This study was designed to evaluate the psychiatrists' level of recognition of somatic symptoms associated to a major depressive episode (MDE) (DSM-IV-TR criteria) and the impact of those somatic symptoms on the treatment effectiveness.

Methods: This non-interventional study was conducted in 25 medical offices in Puerto Rico from February to December 2003. It had 2 visits separated by 8 weeks.

Temperature dependence of enthalpy changes for ethidium and propidium binding to DNA: effect of alkylamine chains.

Calorimetric titrations have been performed on the binding of ethidium and propidium to calf thymus DNA at temperatures in the 15-60 degrees C range. Enthalpy changes (delta HB) derived from these experiments performed with the new Omega reaction calorimeter have a precision of +/- 0.10 kcal/mol or less at all temperatures.

The effect of potential-sensitive molecular probes on the thermal phase transition in dimyristoylphosphatidylcholine preparations.

Differential scanning calorimetry (DSC) has been employed to determine the effect of five commonly employed extrinsic potential-sensitive probes on phase transitions of multilamellar suspensions of L-alpha-dimyristoylphosphatidylcholine (DMPC). At mol% values of less than five, the effect of these probes on the excess heat capacity curve in the vicinity of the gel to liquid crystal phase transition can be described by an equation based on the formation of ideal solutions in both phases. Even at up to 4 mol%, these dyes only moderately reduce the enthalpy change associated with this transition, but cause a marked decrease in the size of the cooperative unit parameter.