Racial Differences Effects on Oral Health and Periodontal Diseases Extent, Staging and Grading among the Multi-Ethnic Expatriates in Aseer Region, Saudi Arabia

Background: Given the increase in the numbers of expatriates in Saudi Arabia and the shortage of information about expatriates’ oral health and periodontal disease severity and progression. Objectives: This study aimed to evaluate the effects of the racial differences on oral health and periodontal disease extent, staging, and grading among the multi-ethnic expatriates in the Aseer region, Saudi Arabia. Materials and Methods: This cross-sectional study was carried out on 300 expatriates in Aseer region, Saudi Arabia. They were divided into three equal racial different groups (n = 100), Arabs (AR), Asians (AS), and Africans (AF). The interviews of all participants were completed then the clinical examinations of periodontal diseases extent, staging, and grading parameters were performed. Statistical analysis was done by ANOVA test, Tukey’s test, and Chi-square test. The statistical significance level was determined at p < 0.05. Results: There were statistically significant differences in the comparison between the three ethnic/racial groups in clinical parameters except in GBI, PCR, FI, TFO, and BC, where there were no statistically significant differences in the comparison between the three ethnic/racial groups. There were differences associated with age, gender, smoking, and diabetes, without statistically significant differences among the three racial groups. Conclusion: We concluded that most participants in this study had a generalized severe grade 4 plaque-induced gingivitis and localized periodontitis stage III grade B.

Genotype 3 is the predominant hepatitis C genotype in a multi-ethnic Asian population in Malaysia

BACKGROUND： Genotypes of hepatitis C virus （HCV） are distributed differently across the world. There is a paucity of such data in a multi-ethnic Asian population like Malaysia. The objectives of this study were to determine the distribution of HCV genotypes between major ethnic groups and to ascer- tain their association with basic demographic variables like age and gender.

Family of Multi-ethnic Reflects Uygur-Han Harmony

It is a scorching summer in Huocheng County, Yining City, northwest China＇s Xinjiang Uygur Autonomous Region. Sarim Airsha and his wife Zhang Jinhua are preparing lunch in their kitchen close to the green vineyard. They share the cook- ing： Sarim slices carrots into small pieces on the chopping board, while Zhang cleans

Xinjiang Has Been a Multi-ethnic Region Since Ancient Times

The Xinjiang Uygur Autonomous Region （also called Xinjiang for short）, situated in the border area of northwest China and the hinterland of the Eurasian Continent, occupies an area of 1.6649 million sq km, accounting for one sixth of Chinese territory. It has a land border of 5,600 km bounded by eight countries. It was an important section of the ancient Silk Road. According to statistics,

CNVbase:Batch identification of novel and rare copy number variations based on multi-ethnic population data

Human genetic variants have long been known to play an important role in both Mendelian disorders and common diseases. Notably, pathogenic variants are not limited to single-nucleotide variants. It has become apparent that human diseases can also be caused by copy number variations （CNVs）, especially patient- specific novel CNVs （lafrate et al., 2004; Sebat et al., 2004; Redon et al., 2006; LuDski, 2007; Zhan~ et al.. 2009： Wu et al.. 2015）.

Building a Community for the Chinese Nation in the Context of National Cohesion

Mr.Fei Xiaotong once pointed out that Han people has played a central cohesive role in the formation of the unified multi-ethnic Chinese nation.The emergence and popularization of the concept of“Chinese nation"is itself a manifestation of national cohesion.The history of unified multi-ethnic Chinese nation since the Qin and Han dynasties has laid the foundation of the community for Chinese nation.The building of the community for the Chinese nation is both a realistic subject and a historical process.Since its founding,the Communist Party of China(CPC)has been committed to pushing forward the establishment of a community for the Chinese nation.The ultimate purpose of fostering a strong sense of community for the Chinese nation,standing firmly with“Five Identities",and enhancing our identity with and pride in the Chinese nation,is to improve national cohesion of China.A community for the Chinese nation is a critical expression for Chinese national cohesion;and to push forward the establishment of a community for the Chinese nation in the new era is one of the key measures to improve Chinese national cohesion.