Cognitive performance and morning levels of salivary cortisol and alpha-amylase in children reporting high vs. low daily stress perception.

The aim of the present study was to assess the effects of daily stress perception on cognitive performance and morning basal salivary cortisol and alpha-amylase levels in healthy children aged 9-12. Participants were classified by whether they had low daily perceived stress (LPS, n = 27) or a high daily perceived stress (HPS, n = 26) using the Children Daily Stress Inventory (CDSI). Salivary cortisol and alpha-amylase were measured at awakening and 30 minutes later. Cognitive performance was assessed using the Cognitive Drug Research assessment system. The HPS group exhibited significantly poorer scores on speed of memory (p < .05) and continuity of attention (p < .05) relative to the LPS group. The HPS group also showed significantly lower morning cortisol levels at awakening and at +30 minutes measures in comparison with the LPS group (p < .05), and mean morning cortisol levels were negatively correlated with speed of memory (p < .05) in the 53 participants. No significant differences were observed between both groups in alpha-amylase levels. These findings suggest that daily perceived stress in children may impoverish cognitive performance via its modulating effects on the HPA axis activity.

Cognitive Performance and Morning Levels of Salivary Cortisol and alfa-Amylase in Children Reporting High vs. Low Daily Stress Perception

The aim of the present study was to assess the effects of daily stress perception on cognitive performance and morning basal salivary cortisol and alpha-amylase levels in healthy children aged 9-12. Participants were classified by whether they had low daily perceived stress (LPS, n = 27) or a high daily perceived stress (HPS, n = 26) using the Children Daily Stress Inventory (CDSI). Salivary cortisol and alpha-amylase were measured at awakening and 30 minutes later. Cognitive performance was assessed using the Cognitive Drug Research assessment system. The HPS group exhibited significantly poorer scores on speed of memory (p < .05) and continuity of attention(p < .05) relative to the LPS group. The HPS group also showed significantly lower morning cortisol levels at awakening and at +30 minutes measures in comparison with the LPS group (p < .05), and mean morning cortisol levels were negatively correlated with speed of memory (p < .05) in the 53 participants. No significant differences were observed between both groups in alpha-amylase levels. These findings suggest that daily perceived stress in children may impoverish cognitive performance via its modulating effects on the HPA axis activity (AU)

El objetivo del presente estudio fue evaluar los efectos de la percepción de estrés diario sobre el rendimiento cognitivo y los niveles matutinos basales de cortisol y alfa-amilasa salivar en niños sanos de edades entre los 9y los 12 años. Los participantes fueron clasificados en función de si su nivel de percepción de estrés diario era bajo (LPS, n = 27) o alto (HPS, n = 26), empleando el Children Daily Stress Inventory (CDSI). Se midió el cortisol y la alfa-amilasa salivar al despertar y 30 minutos más tarde. El rendimiento cognitivo se evaluó mediante el sistema de evaluación Cognitive Drug Research. El grupo HPS obtuvo puntuaciones significativamente más bajasen velocidad de memoria (p < .05) y continuidad de la atención (p < .05) con respecto al grupo LPS. El grupo HPS también mostró niveles significativamente más bajos de cortisol matutino al despertar y a los 30 minutos en comparación con el grupo LPS (p < .05), y sus niveles medios de cortisol matutino correlacionaron negativamente con la velocidad de la memoria (p < .05) en los 53 participantes. No se observaron diferencias significativas entre los grupos en los niveles de alfa-amilasa. Estos resultados sugieren que la percepción de estrés diario en niños puede disminuir su ejecución cognitiva a través de sus efectos moduladores en la actividad del eje HPA (AU)

Oedema protective properties of the red vine leaf extract AS 195 (Folia vitis viniferae) in the treatment of chronic venous insufficiency. A 6-week observational clinical trial.

The characteristic components of the pure plant-based extract AS 195 (Folia vitis viniferae) are flavon(ol)-glycosides and glucuronides with quercetin-3-O-beta-D-glucuronide (main flavonoid) and isoquercitrin (quercetin-3-O-beta-glycoside; a secondary flavonoid). In previous clinical studies AS 195 (hard gelatine capsules) has shown oedema-preventing and subjective symptoms alleviating properties in patients with chronic venous insufficiency (CVI). The aim of the present open-label, multicentre, observational trial was to assess tolerability and efficacy of AS 195 (Antistax film-coated tablets). The reduction of the subjective CVI-related symptoms was measured on a 10-cm visual analogue scale. For the global assessment of efficacy and tolerability by the patient and the investigator a 4-point verbal rating scale was used. Sixty-five male and female patients aged 25-82 years with CVI grade I or II (Widmer classification) received AS 195, two film-coated tablets once daily for 42 days (360 mg/day). At the end of the study, all subjective symptoms of CVI (tired, heavy legs, sensation of tension in the legs, tingling sensations in the legs, pain in the legs) were statistically significantly improved. The global assessment of efficacy by the patients and by the investigators was rated as good or satisfactory in most of the patients. AS 195 filmcoated tablets were very well tolerated during the whole trial, as their global tolerability was assessed for most patients as good or satisfactory by both the patients and investigators. Six patients experienced adverse events potentially causally related to trial medication. Four of them reported gastrointestinal problems. The present study showed a marked improvement of subjective symptoms associated with CVI grade I or II, as well as a good or satisfactory global assessment of efficacy and tolerability by the patients and the investigators. Thus, AS 195 film-coated tablets can be considered as effective and safe in patients with CVI grade I or II.