Articles

Thiamethoxam Induced Oxidative Stress and Histopathological Alterations in Male Patients

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Thiamethoxam is one of the second-generation neonicotinoids, a new class of insecticides. The study was designed to investigate the effect of thiamethoxam on fertility in bucks. For this purpose, sixteen male adult male chinchilla rabbits were divided in two groups. Thiamethoxam intoxicated group was treated with thiamethoxam at dose of 250 mg/Kg body weight for 3 months. Semen analysis revealed distinct changes in sperm characteristics including significant decrease in sperm motility (both mass and individual) and sperm count. In addition, significant increase in dead spermatozoa and sperm deformities. Moreover, elevation in testicular concentration of MDA and GST was significant. GSH was significantly decreased. Degeneration and necrosis of spermatogenic cells with intertubular edema and vacuolations in seminiferous tubules were the major observed histopathological changes in the testis of intoxicated animals. In conclusion, thiamethoxam administration for 3 months induced significant decrease in fertility and oxidative stress in the reproductive system of adult male.

Association of Colours and Mood Tones That Could Define Stress among International School Students in Bangkok

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Have you ever wondered how colours perceiving through the lens of our eyes influence our emotions or why some objects in different colours dissimilarly affect the mood we experience in our daily lives? The purpose of this study is to determine the correlation between colours and stress levels of international school teenagers. The rationale behind this topic is from theGoethe’s Theory of Colours. To test whether two variables correlate, we conducted a cross-sectional survey study. Our questionnaire contains 28 questions, all of which have been approved by 4 experts. Data were collected from Mahidol University International Demonstration School (MUIDS) students who aged between 15 and 18 years old using an online survey, Google Forms.  A total of 245 students participated in the study and completed the survey. To determine the correlation between colours and stress levels, we used Statistical Product and Service Solutions version 27.0 (SPSS) for data analysis. Pearson’s correlation test revealed that there is no significant correlation between colours and stress levels. Although we did not find any correlation, we suspected that there might be other possible factors such as cultures, personality and situational factors that play a significant role in developing stress. Moreover, colours also have different meanings in different cultures. Therefore, more scientific research is required to gain a better understanding of colour psychology.