The current study considered the influence of perceived discrimination on the diurnal cortisol rhythm of 50 African American older adults and a matched comparison groups of 100 Whites (M(age)=56.6; 58% female). The role of socioeconomic status (SES) as a moderator of the effects of discrimination on the diurnal decline was also considered for each group. In support of the idea that perceptions ...

Increased diurnal variation of expiratory flow rates has been documented in patients with chronic bronchitis, but this could be secondary to the disease process of bronchitis rather than an associated disease--namely, asthma. Peak expiratory flow was measured twice daily before and after inhalation of 200 micrograms salbutamol in 34 subjects with chronic bronchitis. The FEV1 ranged from 38% to ...

Although a growing body of research has documented important pathways by which the HPA axis mediates the interface between the psychosocial world and individual health, there is a paucity of data from nonwestern populations, particularly from those populations with distinct nutritional and infectious disease ecologies. The specific objectives of this study are: (1) to document variation in diur...

OBJECTIVES To estimate the frequency of primary nocturnal enuresis (PNE) in Pakistani children and to examine the factors associated with it. METHODS A randomly selected cross-sectional study was conducted in five elementary schools, one in each of five districts of Karachi. The parents of 5000 children age between 3-13 years were asked to complete a questionnaire which included items about t...

BACKGROUND In the quest for biological mechanisms underlying socioeconomic differences in health outcomes, attention has turned to the role of the hypothalamic-pituitary-adrenocortical axis. As there is some evidence that both acute and chronic stress raise cortisol levels, and material hardship is a stressor, we examined the relationship of chronic material hardship with salivary cortisol leve...

The course of 39 depressed in-patients' daily mood was recorded by means of frequent self-ratings during their entire stay (in total 3718 days). The frequency of diurnal variations largely varies between subjects without clear dichotomy in 'diurnal' and 'non-diurnal' subjects and the occurrence of diurnal variations is rather irregular. Mood variability measures rather than average daily mood i...

Recent advances in fossil fuel CO2 (FFCO2) emission inventories enable sensitivity tests of simulated atmospheric CO2 concentrations to sub-annual variations in FFCO2 emissions and what this implies for the interpretation of observed CO2. Six experiments are conducted to investigate the potential impact of three cycles of FFCO2 emission variability (diurnal, weekly and monthly) using a global t...

Measurements of the diurnal cycle of potassium (K) atoms between 80 and 110 km have been made during October (for the years 2004-2011) using a Doppler lidar at Kühlungsborn, Germany (54.1°N, 11.7°E). A pronounced diurnal variation is observed in the K number density, which is explored by using a detailed description of the neutral and ionized chemistry of K in a three-dimensional chemistry clim...

A climatology of the diurnal cycles of HIRS clear-sky brightness temperatures was developed based on measurements over the period 2002–07. This was done by fitting a Fourier series to monthly gridded brightness temperatures of HIRS channels 1–12. The results show a strong land–sea contrast with stronger diurnal cycles over land, and extending from the surface up to HIRS channel 6 or 5, with reg...

A rabbit antiserum to somatostatin was used to develop radioimmunoassay methods for measuring somatostatin in monkey cerebrospinal fluid (CSF). By gel permeation chromatography, at least five molecular weight forms of immunoreactive somatostatin (IRS) were identified in monkey CSF; two of these species co-migrated with either synthetic somatostatin-14 or somatostatin-28. The 24-hr profile of CS...