Associations between psychological adaptability and suicide and self-injury among college students / 中国学校卫生

Objective@#To examine the associations between suicide and self-injury behavior with psychological adaptability of college students, so as to provide the basic information for prevention of suicide and self-injury behavior.@*Methods@#A sample of 825 college students completed a self-report questionnaire that measured sociodemographic characteristics, anxiety, depressive symptoms, resilience, self-compassion, and forgiveness.@*Results@#Among 825 college students, the prevalence rates of suicidal ideation, suicidal plan, suicidal preparation, and suicidal action were 9.9%, 3.5%, 2.5%, 1.8% respectively. The rate of self-injury was 11.8%. Compared with the group with low scores of forgiveness dimension, high score of forgiveness was the protective factor of suicidal psychological behavior (OR=0.26) and self-injury (OR=0.31) (P<0.05). Compared with the score of Connor-Davidson Resilience Scale in each scale of mental resilience, low score was the risk factor of self-injury (OR=2.11), while high score was the protective factor of suicidal mental behaviors (OR=0.51) (P<0.05). Compared with the middle scores of the self-compassion scale and hearland forgiveness scale, the low scores were the risk factors for suicidal psychological behavior (OR=1.66, 2.28), while the high scores were the protective factors for suicidal psychological behavior (OR=0.33, 0.44) and self-injury (OR=0.35, 0.39) (P<0.05).@*Conclusion@#Psychological resilience, self-compassion and forgiveness are significantly correlated with suicide and self-injury, suggesting that colleges and universities should pay close attention to the mental health status of college students and help them reduce the incidence by improving their self-psychological adjustment ability.

Investigation on ultrasound-assisted extraction of three dibenzylbutyrolactone lignans from Hemistepta lyrata.

Ultrasound-assisted extraction is evaluated as a simpler and more effective alternative to conventional extraction methods for the extraction of bioactive compounds from natural product. This study investigated the use of ultrasound-assisted extraction to extract three dibenzylbutyrolactone lignans, including tracheloside, hemislienoside, and arctiin from Hemistepta lyrata. Factors such as extraction solvent, solvent concentration, solvent to material ratio, and extraction time were examined. High-performance liquid chromatography with photodiode array detection was used for simultaneous determination of the target compounds in the corresponding extracts. Results showed that the optimal parameters to extract the target compounds from H. lyrata were as follows: extraction solvent: 70% aqueous ethanol; solvent to material ratio: 20:1 (v/w, ml/g); extraction time: 20 min under the conditions: ultrasonic frequency: 40 Hz; extraction temperature: 30 ˚C. With all these merits, ultrasound-assisted extraction should be considered for wider application in the extraction of tracheloside, hemislienoside, and arctiin from other medicinal plants.