First report of L1014F kdr mutation in Culex quinquefasciatus in Mexico.

The L1014F mutation in the voltage-sodium channel gene has been associated with resistance to DDT and pyrethroids in various arthropod species including mosquitoes. We determined the frequency of the L1014F kdr mutation in 16 field populations of Culex quinquefasciatus from Northeastern Mexico collected between 2008 and 2013. The L1014F was present in all populations analyzed with the lowest frequency (3.

Clinical trials in isolated systolic hypertension in the elderly.

The presence of isolated systolic hypertension in elderly subjects predisposes to the development of coronary artery disease, myocardial infarction, heart failure, cardiovascular events, stroke and cardiovascular mortality. Whether pharmacologic management of isolated systolic hypertension in the elderly is justified or not has not received attention until the recent years. In this era of the practice of evidence based medicine it is important to review the results of clinical trials about the management of isolated systolic hypertension involving thousands of elderly patients.