Abstract Introduction Circadian rhythm disturbance is a common feature of many psychiatric disorders. Light the primary input to circadian clock, with daytime light strengthening rhythms and night disrupting them. Therefore, habitual exposure may represent an environmental risk factor for susceptibility Methods We performed largest to-date cross-sectional analysis light, sleep, physical activit...

this study was performed to evaluate the effect of atenolol on the serum concentration of tt4 and tt3 in subclinical hyperthyroid patients. due to the i n s u fficient information about the effect of atenolol on serum level of these hormones, the aim of this research was to shade some light on the subject. fifteen subclinical hyperthyroid patients entered this study. each patient received 100 m...

Nifedipine (NIF) a 1, 4-dihydropyridine calcium channel antagonist, undergoes photodegradation to nitroso analogues of dehydronifedipine (NDNIF) when exposed to sunlight. Photodegradation products of NIF have no clinical activity, so different formulations of NIF must remain unchanged. If NIF preparations become unstable in exposure to light, they could cause therapeutic failure. The present st...

Intervention: The intervention consisted of five weeks of daily sessions of light treatment in the participant’s home. Participants were advised to complete their session before 10:00 each morning, sitting at a distance of 40 cm with the head directed towards the light. The treatment sessions lasted for one hour a day (intensity: 10000 lux at 40 cm) while the placebo involved dim red light for ...