Instead of "ho ho!" as Christmastime is here again, columnist Colleen Steele feels a bit of "oh no!" because of the season's stresses.

The oxygen-sensing protein HIF-1alpha may contribute to worsening pulmonary arterial hypertension (PAH) and is a possible ...

Treating PAH patient-derived blood vessel cells with calcitriol reduced vitamin D receptor deficiency and suppressed their ...

Columnist Anna Jeter, whose parents also serve as her caregivers, describes their familial arrangement, which works perfectly for them.

Blood levels of two markers may help predict treatment response and outcomes in pulmonary arterial hypertension patients, per ...