College Students In Guangzhou Research Articles

Childhood Trauma and Depressive Level Among Chinese College Students in Guangzhou: The Roles of Rumination and Perceived Stress.

Although previous studies have validated the effect of childhood trauma on depressive level, few studies have utilized the diathesis-stress theory to investigate the specific roles of perceived stress and rumination in the pathway between childhood trauma and depression in Chinese college students. This study aims to demonstrate the mediation effect of perceived stress and the moderation effect of rumination in the pathway between childhood trauma and depressive level in Chinese college students. A total of 995 Chinese college students in Guangzhou were included in this study by recruitment advertisement from October to December 2021. And they were asked to finish four self-report questionnaires, including Childhood Trauma Questionnaire-Short Form, Perceived Stress Scale, the 22-item Ruminative Response Scale, and Beck Depression Scale-II. Then the data were analyzed with Mplus 8.3. Results revealed significant correlations among childhood trauma, perceived stress, rumination and depressive level. Further analyses revealed that perceived stress played a mediation role between childhood trauma and depressive level (estimate=0.09, standard error [SE]=0.02, t=5.93, 95% confidence interval [CI]=0.06-0.12), and rumination played a moderation role between childhood trauma and perceived stress (estimate=-0.17, SE=0.06, t=-2.86, 95% CI=-0.28- -0.05]) as well as between childhood trauma and depressive level (estimate=0.10, SE=0.04, t=2.74, 95% CI=0.03-0.16). These results revealed the mediation effect of perceived stress and the moderation effect of rumination in the pathway between childhood trauma and depressive level in Chinese college students, which helped us to understand how the childhood trauma influenced the depressive level and gave us multi-dimensional indications for reducing the effect of childhood trauma on depressive level.

Characteristics and Influencing Factors of College Students' Sports Consumption in Guangzhou

Background and Aim: This article investigates influencing factors of sports consumption among college students in Guangzhou using an empirical approach grounded in consumer economics. The study contributes to theoretical research and informs government-led consumption policies and corporate strategies. The research explores factors affecting college students' sports consumption, including physical fitness, sports skills, referee knowledge, exercise methods, and sports protection knowledge. Materials and Methods: The study utilized questionnaires and expert interviews. Experts in sports psychology, sports economics, and physical education, and Guangzhou University students participated. A research framework was developed through literature analysis and expert input, guiding questionnaire creation. Data underwent collection, organization, and analysis using methods like structural equation modeling, including hypothesis testing. Results: The research revealed that physical fitness, sports skills, referee knowledge, exercise methods, and sports protection significantly impact college students' sports consumption. Physical fitness negatively influenced sports goods and participation-based sports consumption. Sports skills positively influenced sports goods and ornamental sports consumption. Referee knowledge had positive effects on all three consumption types. Exercise methods and sports protection also positively affected all consumption types. Conclusion: This study emphasizes the considerable influence of multiple factors on college students' sports consumption. Physical fitness affects consumption diversely, with negative impacts on sports goods and participation-driven consumption, but a positive impact on ornamental sports consumption. Sports skills positively affect sports goods and ornamental sports consumption. Referee knowledge consistently contributes to all sports consumption types. Furthermore, exercise methods and sports protection positively impact all consumption dimensions. These findings underscore the intricate interplay of factors and highlight the need for customized strategies to engage college students in diverse sports consumption behaviors.

A Study on Influencing Factors towards Online Financial Management Ability among College Students in Guangzhou

With today's rapid expansion of online financial services, college students' online financial management awareness is rapidly improving, as citizens' financial management awareness gradually improves. The purpose of this study is to examine network financial management ability, with the goal of investigating the financial management ability development of college students in the Internet field of vision. College students' network financial management capabilities should include network financial management concepts, network financial ethics, network financial management knowledge, and network financial execution ability, based on a comprehensive perspective of financial management, finance, pedagogy, statistics, and other disciplines, after consulting relevant materials and drawing on the opinions of relevant scholars. And a financial risk control system for the network. Based on the theories used are Cognitive Learning Theory (CLT), perceived risk, financial management theory, Quality Development Theory and Platform Economic Theory, the author conducted a questionnaire survey in certain colleges and universities in Guangzhou, Guangdong Province. The questionnaire's survey objects, as well as the scores for each question, are sorted and examined. Using data analysis shows the current state of network financial management principles, network financial management ethics, network financial management knowledge, network financial execution power, and network financial risk control among college students.

Public Transport Crowding Valuation: Evidence from College Students in Guangzhou

Overcrowding has grown to be an increasingly important issue for public transit in Guangzhou, China. To capture traveler benefits of reduced crowding from improved public transport, it is necessary to identify the relevant importance of crowding to travelers. This paper analyzes the disutility of crowding in metro car and bus transit with discrete choice models. Based on the stated preference survey data from college students in Guangzhou, the results show that there is non-negligible impact of crowding on passenger travel. The relationship between the disutility of crowding and standee density is not linear; that is, the disutility increases at a modest rate as the standee density increases when it is easy to move around in cars and increases rapidly when it is difficult to move around in cars. Also, there is only a slight difference between the effects of crowding on metro and bus transit.

Fine and ultrafine airborne PM influence inflammation response of young adults and toxicological responses in vitro.

Little evidence is available regarding the impact of different sizes of inhaled particulate matter (PM) on inflammatory responses in healthy young adults in connection with toxicological responses. We conducted a five-time repeated measurement panel study on 88 healthy young college students in Guangzhou, China from December 2017 to January 2018. Blood samples were collected from each participant and tested for tumor necrosis factor alpha (TNF-α) levels every week for 5 consecutive weeks. Mass concentrations of ambient PM2.5, PM1, PM0.5 and number concentrations of ambient PM0.1 were measured. RAW 264.7 macrophages were exposed to PM (PM10-2.5, PM2.5-1, PM1-0.2, PM0.2) collected at the same time as the panel study. Cytotoxicity, oxidation and inflammatory parameters, cell cycle and genotoxicity were tested. Particles were characterized for their chemical composition. The trends of associations between PM2.5, PM1, PM0.5 and TNF-α level were consistent in lag 0 and 3 days, and the relative risk decreased as the particle size decreased. All the ambient air pollutants had the similar change trends in lag 1, 4 and 5 days. Similar results in RAW 264.7 macrophages were found; PM10-2.5 induced the greatest TNF-α and macrophage inflammatory protein 2 (MIP-2) productions and oxidative damage. PM1-0.2 and PM0.2 induced more significant dose-dependent increases of cell cycle and genotoxic response. In the component concentrations of PM samples, metal elements were PM10-2.5 > PM2.5-1 > PM0.2 ≥ PM1-0.2; ions and polycyclic aromatic hydrocarbons (PAHs) were PM0.2 > PM1-0.2 > PM2.5-1 > PM10-2.5. Our results suggested that exposure to all particle sizes was significantly associated with inflammation among healthy young adults and toxicological responses in RAW 264.7 macrophages. Different human and toxicological reactions caused by PM samples indicated the importance of investigating various particle sizes.

AN EMPIRICAL STUDY ON CHINESE EFL LEARNERS' CROSS-CULTURAL SENSITIVITY BASED ON EDUCATIONAL EMOTION REGULATION

Abstract Background Cross-cultural sensitivity is a prerequisite for learning and successful cross-cultural communication, but the research on the differences of cross-cultural sensitivity of Chinese English learners of different majors is still blank. The purpose of this study is to explore the significant correlation between different levels of cross-cultural sensitivity from the perspective of positive educational psychological effect, understand the differences of Chinese English learners in cross-cultural sensitivity, and find the main ways of understanding foreign culture in cross-cultural communication behavior, so as to provide theoretical and practical reference for cross-cultural communication researchers and English teachers. Therefore, based on the perspective of educational emotion regulation, this study discusses the cross-cultural sensitivity of Chinese English learners. Subjects and Methods Based on the cross-cultural sensitivity scale of Chen and starosta, this study conducted a questionnaire survey on the cross-cultural sensitivity of 331 Chinese EFL learners. They were divided into three professional groups: English, science, humanities and social sciences. The scale includes 24 five points scale questions about mental state, which measure the variables that constitute the level of sensitivity between five different cultures. In order to ensure the accuracy of the survey results, the author randomly selected 5 subjects from the three groups for in-depth interviews, and recorded and counted the interview results. SPSS 17.0 statistical software package was used for statistical analysis. At the same time, the anxiety level of foreign language learning was further explored in the study. The study took Kim's anxiety scale as the measurement scale, combined with Pearson correlation, standard deviation and statistical significance to illustrate the correlation. T-test of independent samples was used to verify the difference between high anxiety group and low anxiety group. It can be seen from the above table that there is a very significant positive correlation among state anxiety, trait anxiety and foreign language learning anxiety. It can be seen that the “anxiety” component of learners' personality characteristics plays a great role in the generation of foreign language learning anxiety. This finding is consistent with our experience and common sense, as well as the results of similar studies. For example, the test conducted by Wang caikang among college students in Guangzhou shows that the correlation coefficient between FLCAS and trait anxiety is 0.408, while the correlation coefficient with state anxiety is 0.395. Both reached a significant level (P < 0.01). Results The study shows that among the five factors of cross-cultural sensitivity, Chinese English learners have the highest respect for cultural differences, followed by interactive enjoyment, interactive attention and interactive self-confidence. The degree of interactive participation is much lower than the other four factors. Pearson's correlation analysis shows that there is a significant correlation between multiple factors of cross-cultural sensitivity, in which the degree of interactive attention and interactive participation are completely linear. Partial correlation analysis shows that there is a strong correlation between respect for cultural differences and interactive enjoyment. In addition, Chinese English learners are usually exposed to foreign cultures in a variety of ways. In terms of anxiety level, there are significant differences in the relationship between foreign language anxiety, self-efficacy and academic achievement of students of different majors and genders. It is found that compared with male college students, female college students' foreign language achievement and self-efficacy level are much higher. However, there is no significant difference in anxiety level between male and female college students. Conclusion This study shows that case-based cross-cultural teaching has a significant emotional impact on Chinese English learners' cross-cultural sensitivity and cross-cultural communicative competence. Critical cultural awareness is the key to improve Chinese English learning achievement and establish a healthy attitude for future life. Due to the limitations of the research object, the research scope and quantity need to be further studied. In addition, in the design of language teaching methods and syllabus, we must change the paradigm from the traditional perspective of cross-cultural sensitivity. Acknowledgements This research was supported by Youth Innovation Team Development Plan of Colleges and Universities of Shandong Province, “Youth Innovation Talent Introduction and Education Plan project”; “Multilingual Language Education and Service Innovation Team”.

Impact of middle- and long-distance running on mental health in college students in Guangzhou during COVID-19 outbreak

To investigate the impact of middle- and long-distance running on mental health of students in a college in Guangzhou during the COVID-19 outbreak. We collected data using online questionnaires from the college students selected via snowball sampling. After exclusion of invalid questionnaires and matching the data of running exercise with physical test scores of the participants, 1022 questionnaires were deemed valid for analysis. Of the 1022 students, 869 completed at least a 60-km running distance each semester as required and 153 students did not complete the task. The mental health status of the students was evaluated using PTSD Checklist-Civilian Version (PCL-C), Zung Self-rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS). The scale scores were compared between the students who completed the running task and those who did not, and the factors affecting anxiety and depression were analyzed using univariate analysis and binary logistic regression. The students who completed the running task had significantly higher physical test scores than those who did not complete the task (P < 0.05). The PCL-C, SDS, SAS scale scores or the conditions of PTSD, anxiety, and depression did not differ significantly between two groups (P>0.05). Binary logistic regression analysis indicated that completing the running task or not did not affect the condition of PTSD, anxiety, or depression of the students; a higher physical test score was associated with a decreased risk of PTSD (OR=0.98, 95%CI: 0.97-0.99) and depression (OR=0.99, 95%CI: 0.97-1.00) but an increased risk of anxiety (OR=1.02, 95%CI: 1.01-1.04) during COVID-19 outbreak. Regular middleand long-distance running exercise may enhance the physical health to indirectly promote the mental health of the college students during COVID-19 outbreak.

Conversation Breeds Compliance: The Role of Intergenerational Communication in Promoting Preventive Behaviors against COVID-19 among Middle-Aged Parents in China.

This study aims to explore and compare the influences of two crucial information channels used by middle-aged parents—media and their adult children—on their health knowledge, emotions and preventive behaviors against COVID-19, based on media exposure and the family communication patterns (FCP) theory. Parents of college students in Guangzhou, China were invited to participate in an online survey between February 10 and 24, 2020. A total of 193 respondents, aged between 40 and 65 years, completed the study questionnaire. Media exposure was a positive predictor of negative emotions, intergenerational discussions, and preventive behaviors among Chinese middle-aged parents. Conversation orientation was a positive predictor of scientific discussions and preventive behaviors, whereas conformity orientation was a negative predictor of knowledge, but a positive predictor of intergenerational discussions and negative emotions. Intergenerational discussions mediated the relationships between media exposure and preventive behaviors, as well as between FCP and preventive behaviors. Health communication efforts require the help of adult children as intergenerational communication serves as an important amplifier in terms of influencing the health knowledge, attitudes, and behaviors of middle-aged and elderly populations.

Human papillomavirus vaccination coverage and knowledge, perceptions and influencing factors among university students in Guangzhou, China

ABSTRACT Introduction: HPV vaccines were administered in mainland China from July 2017 at a gradual rate. We aimed to assess the vaccination rate and vaccination influencing factors among college students in mainland China. Methods: From October to December 2018, we conducted face-to-face questionnaires including 5 sections and 22 questions to collect demographic information, HPV infection and transmission knowledge, HPV vaccine knowledge and attitudes among college students in Guangzhou, China. HPV vaccine vaccination status and cervical screening behaviors were self-reported. Knowledge and attitudes differences between the vaccinate and non-vaccinate groups were analyzed using univariable logistic regression. Vaccination-related influencing factors were estimated using multivariable logistic regression. Results: 5307 of 5414 valid questionnaires were collected. The self-reported cervical screening rate and HPV vaccine coverage were 11.82% (9.03%-14.61%) and 3.09% (2.62%-3.56%). In total, 55.57% of the participants were hesitant about vaccination. Urban residence (OR = 2.1, 95%CI: 1.4–3.3), high monthly consumption (OR = 2.6, 95%CI: 1.9–3.6), awareness of vaccination adaptive population (OR = 3.1, 95%CI: 1.9–5.0), awareness of infection-related risk factors (OR = 2.5, 95%CI: 1.1–5.7), and awareness of HPV vaccine effectiveness (OR = 3.2, 95%CI: 2.0–5.2) were significant in multivariable logistic regression. Conclusion: HPV vaccine coverage is quite low among college students in China Guangzhou. Economic affordability, awareness of HPV infection, and belief in the effectiveness of HPV vaccine are influencing factors for vaccination. In the future, establishing a national financial subsidy and strengthening health education is needed to increase the vaccination rate in China.

Short-Term Effects of Particle Sizes and Constituents on Blood Biomarkers among Healthy Young Adults in Guangzhou, China.

Evidence of the effects of various particle sizes and constituents on blood biomarkers is limited. We performed a panel study with five repeated measurements in 88 healthy college students in Guangzhou, China between December 2017 and January 2018. Mass concentrations of particles with aerodynamic diameters ≤ 2.5 μm (PM2.5), PM1, and PM0.5 and number concentrations of particles with aerodynamic diameters ≤ 200 nm (PN0.2) and PN0.1 were measured. We used linear mixed-effect models to explore the associations of size-fractionated particulate matter and PM2.5 constituents with five blood biomarkers 0-5 days prior to blood collection. We found that an interquartile range (45.9 μg/m3) increase in PM2.5 concentration was significantly associated with increments of 16.6, 3.4, 12.3, and 8.8% in C-reactive protein (CRP), monocyte chemoattractant protein-1 (MCP-1), soluble vascular cell adhesion molecule-1 (sVCAM-1), and endothelin-1(ET-1) at a 5-day lag, respectively. Similar estimates were observed for PM1, PM0.5, PN0.2, and PN0.1. For PM2.5 constituents, consistent positive associations were observed between F- and sVCAM-1 and CRP and between NH4+ and MCP-1, and negative associations were found between Na+ and MCP-1 and ET-1, between Cl- and MCP-1, and between Mg2+ and sVCAM-1. Our results suggested that both particle size and constituent exposure are significantly associated with circulating biomarkers among healthy Chinese adults. Particularly, PN0.1 at a 5-day lag and F- and NH4+ are the most associated with these blood biomarkers.

Reliability and validity of Healthy Fitness Measurement Scale (V1.0) for evaluating healthy fitness of college students in Guangzhou

To evaluate the reliability and validity of Healthy Fitness Measurement Scale V1.0 (HFMS V1.0) for assessing healthy fitness status of college students in Guangzhou. A total of 584 college students were evaluated with HFMS V1.0. The reliability and validity of HFMS V1.0 scale were assessed for its discrimination degree, Cronbach α coefficient, split-half reliability, test-retest reliability, content validity, structural validity, calibration validity and responsiveness. The Cronbach α of HFMS V1.0 scale was 0.893, the split-half coefficient was 0.909, and the test-retest coefficient was 0.923. The correlation coefficients of each dimension with its subscales ranged from 0.687 to 0.931. The correlation coefficient between each item and its dimension ranged from 0.558 to 0.863(P < 0.05). Exploratory factor analysis showed that the variance interpretation of 8 factors was 55.105%, and the factor structure was basically identical with the theoretical concept of the scale. Confirmatory factor analysis showed excellent goodness-of-fit indices of the model (χ2/DF= 1.952; RMSEA=0.400; GFI=0.906; TLI=0.905; IFI=0.914; and CFI=0.913; P < 0.05). The correlation coefficients between the 4 general items and their corresponding scales ranged from 0.585 to 0.670. The proportions of the highest and lowest scores of the scale were very low, suggesting a high responsiveness of the scale. HFMS V1.0 has high reliability and validity for evaluating healthy fitness status of college students.

Associations of ambient particulate matter with homocysteine metabolism markers and effect modification by B vitamins and MTHFR C677T gene polymorphism

Evidence concerning effects of ambient air pollution on homocysteine (HCY) metabolism is scarce. We aimed to explore the associations between ambient particulate matter (PM) exposure and the HCY metabolism markers and to evaluate effect modifications by folate, vitamin B12, and methylenetetrahyfrofolate reductase (MTHFR) C677T gene polymorphism. Between December 1, 2017 and January 5, 2018, we conducted a panel study in 88 young college students in Guangzhou, China, and received 5 rounds of health examinations. Real-time concentrations of PMs with aerodynamic diameter ≤2.5 (PM2.5), ≤1.0 (PM1.0), and ≤0.1 (PM0.1) were monitored, and the serum HCY metabolism markers (i.e., HCY, S-Adenosylhomocysteine [SAH], and S-Adenosylmethionine [SAM]) were repeatedly measured. We applied linear mixed effect models combined with a distributed lag model to evaluate the associations of PMs with the HCY metabolism markers. We also explored effect modifications of folate, vitamin B12, and the MTHFR C677T polymorphism on the associations. We observed that higher concentrations of PM2.5 and PM1.0 were associated with higher serum levels of HCY, SAH, SAM, and SAM/SAH ratio (e.g., a 10 μg/m3 increase in PM2.5 during lag 0 day and lag 5 day was significantly associated with 1.3-19.4%, 1.3-28.2%, 6.2-64.4%, and 4.8-28.2% increase in HCY, SAH, SAM, and SAM/SAH ratio, respectively). In addition, we observed that the associations of PM2.5 with the HCY metabolism markers were stronger in participants with lower B vitamins levels. This study demonstrated that short-term exposure to PM2.5 and PM1.0 was deleteriously associated with the HCY metabolism markers, especially in people with lower B vitamins levels.

The Influence of Alipay Ant Forest on Environmental Protection Consciousness of College Students in Guangzhou

&lt;p&gt;Alipay ant forest uses Internet social media and sensor positioning technology to realize the organic combination of online scene and offline scene. Users who use Alipay for payment and settlement business can convert offline physical low-carbon consumption behavior into online forest tree-planting public welfare activities. Ant forest has promoted the low carbon concept in the form of games and aroused the public's enthusiasm to participate in environmental protection activities. Therefore, this article takes the college students in Guangzhou as investigation object, through the analysis of Alipay ants forest to enhance college students' environmental awareness and the cognition of low carbon concept among college students, to ensure that students in abiding by the rules of Alipay ants forest game process. It can promote the environmental protection low carbon life habit, and set up the idea of low carbon consumption, so as to realize harmonious coexistence between man and nature.&lt;/p&gt;

THE IMPACT OF VOLUNTEER TOURISM: CASE STUDY OF MEIXIAN TEAM

Volunteer tourism has been growing as an important segment of youth tourism. This paper takes Meixian Team ( Meixian Dui) as the case study. College students in Guangzhou, Southeast China, ride bicycles to rural China to help with primary teaching in rural Guangdong Province. By means of in-depth interviews, the research attempts to analyse their reflection and personal experience in relation to their volunteer tours. Young volunteers developed their personalities during their journey of helping rural children with limited resource. There were diverse modes of personal and interpersonal interactions among the research respondents. These volunteer tourists manifested how their experience resulted in shifts in personal attitude and world views of Chinese colleague students.

Resilience mediated the association between acculturation and psychological growth in college students from Hong Kong to Guangzhou, China

Background: The number of Hong Kong citizens living in mainland China is increasing. The process of acculturation may create opportunities for psychological growth.Aims: This study aimed at examining whether resilience mediated the effects of acculturation on psychological growth in college students from Hong Kong to Guangzhou.Method: In this cross-sectional survey, 164 college students in Guangzhou who were Hong Kong permanent residents (female: 46%, age: 21.09 ± 1.50) joined the study.Results: The integration group reported more psychological growth than the assimilation, separation, and marginalization groups. Resilience partially mediated the effect of integration on psychological growth and fully mediated the effect of marginalization on psychological growth.Conclusions: Resilience represents one of the mechanisms to explain beneficial effects of integration on psychological growth in college students from Hong Kong to Guangzhou. Theoretical considerations to rethink the acculturation model, implications for developing intervention programs, and recommendations for future research are discussed.

Self-reported knowledge on diabetes and its related factors among Chinese college students: a cross-sectional study.

ObjectivesAn increasing trend in the prevalence of type 2 diabetes has been observed among youths; however, little is known about how informed young people are of its existence and dangers. This study is to assess the level of knowledge on type 2 diabetes among Chinese college students and to explore related factors influencing the knowledge.SettingA cross-sectional survey was conducted among college students in Guangzhou, China, from September to November 2013.ParticipantsA total of 658 students were randomly recruited using a multistage sampling method and were invited to participate in the confidential interviews.Primary and secondary outcome measuresSelf-reported knowledge on diabetes and its main sources were measured by a self-designed questionnaire.ResultsA total of 521 students participated in this study. The mean total score of knowledge was 13.3±3.44 of 22. Less than 50% of participants could correctly answer the questions about the onset of type 2 diabetes, the adverse effects of sedentary lifestyles, the complications, the therapeutic methods and the monitoring index of diabetes. The factors associated with higher levels of knowledge about type 2 diabetes in stepwise regression models were: being in a high grade, having a better academic performance, having a medical specialty and having relatives or friends with diabetes. Newspapers and books (61.4%), television and the Internet (46.3%) were the major sources of knowledge about type 2 diabetes, and more than half of the participants (55.9%) considered that medical staff was the most reliable source.ConclusionsThe college students had limited knowledge about type 2 diabetes. Public education, especially among individuals with non-medical specialties, a low-level grade, poor academic performance or no relatives and friends with diabetes, would be extremely beneficial.

Trace elements are associated with urinary 8-hydroxy-2'-deoxyguanosine level: a case study of college students in Guangzhou, China.

Many trace heavy elements are carcinogenic and increase the incidence of cancer. However, a comprehensive study of the correlation between multiple trace elements and DNA oxidative damage is still lacking. The aim of this study is to investigate the relationships between the body burden of multiple trace elements and DNA oxidative stress in college students in Guangzhou, China. Seventeen trace elements in urine samples were determined by inductively coupled plasma-mass spectrometry (ICP-MS). Urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), a biomarker of DNA oxidative stress, was also measured using liquid chromatography tandem mass spectrometer (LC-MS/MS). The concentrations of six essential elements including manganese (Mn), copper (Cu), nickel (Ni), selenium (Se), strontium (Sr), and molybdenum (Mo), and five non-essential elements including arsenic (As), cadmium (Cd), aluminum (Al), stibium (Sb), and thallium (Tl), were found to be significantly correlated with urinary 8-OHdG levels. Moreover, urinary levels of Ni, Se, Mo, As, Sr, and Tl were strongly significantly correlated with 8-OHdG (P < 0.01) concentration. Environmental exposure and dietary intake of these trace elements may play important roles in DNA oxidative damage in the population of Guangzhou, China.

Exposure to polycyclic aromatic hydrocarbons could cause their oxidative DNA damage: a case study for college students in Guangzhou, China

Human exposure to carcinogenic polycyclic aromatic hydrocarbons (PAHs) in cigarette smoking might result in generation of reactive oxygen species (ROS) and induce formation of 8-hydroxy-2'-deoxyguanosine (8-OHdG). This study was designed to examine whether levels of 8-OHdG are associated with levels of urinary metabolites of PAHs. Two groups (smokers and non-smokers) were recruited from college students in Guangzhou, China. Their urine samples were collected and analyzed for ten urinary mono-hydroxylated PAHs (OH-PAHs) and 8-OHdG by liquid chromatography equipped with tandem mass spectrometer (LC/MS/MS). Multiple linear regression analysis was performed to examine correlations between urinary levels of 8-OHdG and OH-PAHs. No significant difference was observed for creatinine-adjusted OH-PAHs between smokers and non-smokers. The levels of 8-OHdG between smokers and non-smokers were comparative. OH-PAH levels in this study were 2-50 times higher than those in populations from other countries and areas. The estimated daily intake (EDI; μg/day) of PAHs ranged from 0.02 to 371.4, which were far lower than the reference doses (RfDs) specified by U.S. Environmental Protection Agency (EPA). Though smoking was a main factor, which affected the PAH exposure, it was not a dominant factor in the exposure to PAHs of Guangzhou college students. The environmental exposure could not be ignored. The sum concentrations of OH-PAHs (∑OH-PAHs) had a dose-increase relationship with 8-OHdG both for smokers and non-smokers, especially for smokers. Though people in Guangzhou bore higher PAH hazards, the estimated environmental risk was still under safe ranges.

Sexual violence experienced by male and female Chinese college students in Guangzhou

ObjectivesSexual violence research in China is in its early stages. This study described the sexual violence experience of college students in Guangzhou, China, and examined the individual and family factors...

Study on the mobile phone dependence syndrome and its distribution among 2213 college students in Guangzhou

To investigate the occurrence, distribution and risk factors of mobile phone dependence syndrome(MPDS)among college students in Guangzhou. A unified questionnaire was adopted, with 2311 college students from 6 universities in Guangzhou investigated by cluster sampling. Distribution and risk factors of MPDS among different groups were analyzed by logistic regression. A total number of 2213 effective questionnaires was retrieved, including 1149 males and 1064 females. The average age was(21.33 ± 1.72). The incidence rate of MPDS among studied college students in Guangzhou was 23.3% (515/2213). Regarding the distribution of personal characteristics, significant differences were found in the following aspects:grades, majors in college, being the only child of the family, monthly cost of living, personal characters and the academic performance at school (P<0.05). Regarding the distribution of characteristics among parents, significant differences were found in the following areas:educational levels of the mother, rearing patterns of both parents, status of feeling on mother's caring(P<0.05)etc. The main risk factors for MPDS were as follows:students major in literature and law, with high monthly living cost, father's autocratic and democratic patterns of rearing, mother's autocratic and doting rearing pattern as well as personal feeling on mother's attitude of unconcern. The incidence of MPDS among those persons with uncertain characters was less than those who were extroverts. MPDS among college students seemed to be severe in Guangzhou. No difference was found in the incidence rates of MPDS between genders. Should take interventions according to its risk factors.