Association of HLA-DRB1 and -DQB1 Alleles with Susceptibility to IgA Nephropathy in Korean Patients

In Ji Won,Jung Kiwook,Shin Sue,Park Kyoung Un,Lee Hajeong,Song Eun Young 대한진단검사의학회 2022 Annals of Laboratory Medicine Vol.42 No.1

Background: Associations between IgA nephropathy (IgAN) and HLA-DRB1 and -DQB1 alleles have been reported in several ethnic groups. We investigated the association of HLA-DRB1 and -DQB1 alleles with the predisposition for IgAN and disease progression to end-stage kidney disease (ESKD) in Korean patients. Methods: We analyzed HLA-DRB1 and -DQB1 genotypes in 399 IgAN patients between January 2000 and January 2019 using a LIFECODES sequence-specific oligonucleotide (SSO) typing kit (Immucor, Stamford, CT, USA) or a LABType SSO Typing Test (One Lambda, Canoga Park, CA, USA). Alleles with a significant difference in two-digit resolution were further analyzed using in-house sequence-based typing and sequence-specific primer PCR. As controls, 613 healthy hematopoietic stem cell donors were included. Kidney survival was analyzed in 281 IgAN patients with available clinical and laboratory data using Cox regression analysis. Where needed, P-values were adjusted using Bonferroni correction. Results: The allele frequencies of HLA-DRB1*04:05 (corrected P [Pc]<0.001), -DQB1 *04:01 (Pc=0.048), and -DQB1*03:02 (Pc=0.021) were significantly higher in IgAN patients than in controls, whereas those of HLA-DRB1*07:01, -DRB1*15:01, -DQB1*02:02, and -DQB1*06:02 (Pc<0.001 for all) were significantly lower in IgAN patients than in controls. The allele frequency of HLA-DQB1*05:03 (Pc=0.016) was significantly lower in the ESKD group than in the non-ESKD group; however, there was no significant difference for ESKD progression between these groups. Conclusions: We report novel associations of HLA-DRB1*15:01, DQB1*02:02, -DQB1*03:02, and -DQB1*04:01 with IgAN. Further studies of HLA alleles associated with IgAN progression in a larger cohort and in various ethnic groups are needed.

Suppression of peroxisome proliferator-activated receptor gamma-coactivator-1alpha normalizes the glucolipotoxicity-induced decreased BETA2/NeuroD gene transcription and improved glucose tolerance in diabetic rats.

Kim, Ji-Won,You, Young-Hye,Ham, Dong-Sik,Cho, Jae-Hyoung,Ko, Seung-Hyun,Song, Ki-Ho,Son, Ho-Young,Suh-Kim, Haeyoung,Lee, In-Kyu,Yoon, Kun-Ho Association for the Study of Internal Secretions 2009 Endocrinology Vol.150 No.9

<P>Peroxisome proliferator-activated receptor gamma-coactivator-1alpha (PGC-1alpha) is significantly elevated in the islets of animal models of diabetes. However, the molecular mechanism has not been clarified. We investigated whether the suppression of PGC-1alpha expression protects against beta-cell dysfunction in vivo and determined the mechanism of action of PGC-1alpha in beta-cells. The studies were performed in glucolipotixicity-induced primary rat islets and INS-1 cells. In vitro and in vivo approaches using adenoviruses were used to evaluate the role of PGC-1alpha in glucolipotoxicity-associated beta-cell dysfunction. The expression of PGC-1alpha in cultured beta-cells increased gradually with glucolipotoxicity. The overexpression of PGC-1alpha also suppressed the expression of the insulin and beta-cell E-box transcription factor (BETA2/NeuroD) genes, which was reversed by PGC-1alpha small interfering RNA (siRNA). BETA2/NeuroD, p300-enhanced BETA2/NeuroD, and insulin transcriptional activities were significantly suppressed by Ad-PGC-1alpha but were rescued by Ad-siPGC-1alpha. PGC-1alpha binding at the glucocorticoid receptor site on the BETA2/NeuroD promoter increased in the presence of PGC-1alpha. Ad-siPGC-1alpha injection through the celiac arteries of 90% pancreatectomized diabetic rats improved their glucose tolerance and maintained their fasting insulin levels. The suppression of PGC-1alpha expression protects the glucolipotoxicity-induced beta-cell dysfunction in vivo and in vitro. A better understanding of the functions of molecules such as PGC-1alpha, which play key roles in intracellular fuel regulation, could herald a new era of the treatment of patients with type 2 diabetes mellitus by providing protection from glucolipotoxicity, which is an important cause of the development and progression of the disease.</P>

공군사관생도의 심폐능력에 따른 심리 · 생리요인 비교

김인기(In-ki Kim),김건희(Gun-hee Kim),송성우(Sung-woo Song),최가람(Ga-ram Choi),엄장원(Jang-won Eom),곽재준(Jae-jun Kwak),유영남(Young-nam You),정덕화(Deok-hwa Jeong),강지훈(Ji-hun Kang) 육군사관학교 화랑대연구소 2019 한국군사학논집 Vol.75 No.2

The purpose of this study was to analyze the differences in psychological and physiological factors between groups by classifying groups based on the 3km running record of fourth grade Air Force Academy cadets. Among the top 46 Air Force Academy cadets who wanted to participate in the study, the study conducted an open survey of the top 13 and the bottom 15 who wanted to provide the data prior to the study. The subjects of the experiment and in-depth interview were studied by a total of 18 people, 9 of each upper and lower members who wished to participate in the study. Psychological factors were structured through inductive content analysis of data extracted from in-depth interviews, and physiological factors were conducted to verify differences between groups of body composition and cardiopulmonary function. The psychological factors of the upper and lower groups were found to be general areas of performance strategy, achievement motivation, emotional response, military spirit, situation perception, and basic physical strength. In the detailed areas, the subjects were also examined in 15 areas including physical fitness indicators, confidence, condition control, task orientation, and positive self-perception. As a result of comparison between upper and lower groups, the upper group was 2.2 times higher than the lower group and the lower group was 1.7 times higher than the upper group in the military spirit and performance strategy of the general area response rate. In general area response, the ratio of mental strength and confidence was different in the general area of military spirit. In addition, the upper group in the achievement motivation showed a high percentage of task tendency at 47%, while the lower group showed a high rate of zero motivation at 50%. In the emotional response, the upper group showed an equal ratio, while the lower group showed an 81% ratio of negative emotions. In the overall response by sub-region, the negative emotions of the subgroup were high at 28%. In the body composition, BFM showed a statistically significant difference between upper and lower groups, and Weight, FFM, and SMM did not show any significant difference between groups. In cardiopulmonary capacity, VO2max showed a statistically significant difference between upper and lower groups, and VE and LT did not show significant differences between groups.

항 혈소판 요법을 이용한 관동맥내 Stent 삽입술의 조기 결과

손지원,김영준,손민수,오세진,안태훈,최인석,신익균 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.6

2009년 인플루엔자 대유행 중 인플루엔자 진료소 방문자의 연령 분포 변화

김백남,곽이경,문치숙,김연숙,김의석,배인규,염준섭,이창섭,허지안 대한감염학회 2010 감염과 화학요법 Vol.42 No.2

The pandemic influenza (H1N1 2009) virus, after being introduced in Korea in April, 2009, spread rapidly nationwide in mid-2009. This study was conducted to characterize trend in age distribution of visitors to Flu-clinics during the pandemic. Demographic, clinical and laboratory data of visitors to flu clinic from Week 36 to 52 (August 30 to December 26) of 2009 were retrieved and collected from electronic databases at 9 hospitals. Visitors 0-6, 7-12, 13-18, 19-29, 30-64, and 65 years or more of age were classified into group I to VI, respectively. A total of 107,467 visitors were seen at Flu-clinics for a 17-week study period. Of those, 32,485 were laboratory-confirmed. Antivirals were prescribed for 62,533 visitors. Numbers of visits, prescriptions of antivirals, and laboratory-confirmed cases of the pandemic influenza (H1N1 2009) peaked at Week 44. A large number of visits by group II and III were followed by those of group I and V, especially around the peak. Numbers of visits by group VI were lowest in all hospitals. In some hospitals, higher number of visits lasted longer in children than in adults while vice versa in other hospitals depending on the location. In summary, the pandemic influenza (H1N1 2009) was presumed to peak in late October and involved majorly children and students in Korea. Unique age distribution of visitors to flu clinic was observed in some hospitals.

비소세포폐암에서 Microsatellite Instability

전효성,김정란,손지웅,박선하,박태인,김창호,김인산,정태훈,박재용 경북대학교 병원 2001 경북대학교병원의학연구소논문집 Vol.5 No.1

연구베경:MMR 유전자의 불활성화에 의해 야기되는 뮤전적 불안정성은 발암기전의 한 부류로 인정되고 있다.저자들은 비소세포폐암의 발암과정에서의 MSI의 역할을 규명하기 위해 비소세포폐암에서 MSI의 빈도 및 MSI 유무에 따른 임상상의 차이를 조사하였다. 대상 및 방법:근치적 절제술을 받은 비소세포폐암 20예를 대상으로 하였다.동결된 폐암조직과 환자의 림프구에서 DNA를 추출한 후 3P와 9p의 15개의 marker들을 대상으로 PCR을 시행하고 7% polyacrylamide gel에서 전기영동한 후 silver 염색을 시행하였다. 암조직과 림프구 DNA의 PCR product의 band를 비교하여 MSI와 LOH를 판정하였다. 결과:1)대상환자들은 남자 19예,여자 1예였으며 모두 흡연자였고 평균 흠연력은 47 갑년이었다. 폐암의 조직형은 편평상피암 15예, 선암 4예,대세포암 1예였고, 술 후 병리학적 병기는 Ⅰ기 6예,Ⅱ기 5예, ⅢA기 7예,ⅢB기 2예였다. 2)20예 가운데 8예(40%)에서 MSI가 관찰되었으며 3예는 한 개의 marker에서,5예는 2개 이상의 marker에서 MSI가 관찰되었다. 3)LOH는 10예(50%)에서 있었으며,LOH유무에 따른 병가 및 흡연력의 차이가 없었다. 4)분석한 marker의 10% 이상에서 MSI가 관찰된 MSI-L종양은 5예였으며, 대부분의 marker에서 MSI양성인 MSI-H종양은 없었다.MSS종양과 MSI-L종양은 흡연력, 병기, 폐암 조직형 및 LOH 빈도의 유의한 차이가 없었다. 결론:비소세포폐암에서 MSI는 비교적 흔히 관찰되지만 MMR 유전자의 불활성화에 의한 MMP pathway 는 비소세포폐암의 주요 발생기전은 아닐 것으로 생각된다.향 후 비소세포폐암의 발암과정에 있어서 MMP pathway의 역할을 규명하기 위해서는 보다 많은 예를 대상으로 한 연구가 필요할 것으로 생각되며, MSI 발생기전에 관한 추가적인 연구가 필요할 것으로 생각된다. Purpose: Microsatellite instability(MSI) is frequently used as an indicator of microsatellite mutator phenotype (MMP) tumors.MSI has been observed in a percentage of non-small cell lung cancer(NSCLC).However, its role in tumorigenesis of NSCLC remains unknown.The frequency and partten of MSI in NSCLC were evaluted and clinical parameters of MSI-positive tumors with those of MSS(microsatellite stable) tumors were compared. Materials and Methods: Twenty surgically resected NSCLCs were analyzed for 15 microsatellite markers located at chromosomes 3p and 9p.The peripheral blood lymphocytes of patients were used as the source of the normal DNA. Results:1) of 20 cases, 8(40%) demonstrated MSI. 2) Instability was observed more frequently in tri- and tetra-nucleotide repeats that in dinucleotide repeats. In all cases, instability appeared as a shift of individual allelic bands. 3) LOH was observed in 10(50%) of 20 tumors analyzed. 4) Of 20 cases, MSI-H tumor(showing MSI in the majority of markers) was absent. There were 5 MSI-L tumors( showing MSI in a greater than 10% of markers). 5) No significant difference was observed between MSI-L tumors and MSI negative tumors in terms of clinicopathologic features such as pack-year history of smoking, histologic subtype, and (delete) stage of disease.There was also no significant difference in the incidence of LOH in relation to the status of MSI. Conclusion: These data strongly suggest that MSI plays different roles in lung and colon cancer.MMP pathway appears to be far less important in the tumorigenesis of NSCLC, caused mainly by cigarette smoke, with little familial tendency.(tuberculosis and Respiratory Diseases 2000,48:24-32)

디자인 대학원 작품논문 표절방지를 위한 교육 체계 및 콘텐츠 개발

김지인(Kim, Ji In),박혜신(Park, Hye Sin),서인숙(Seo, Ihn Sook) 한국디지털디자인협의회 2015 디지털디자인학연구 Vol.15 No.3

연구윤리에 대한 인식이 높아지면서 연구윤리 교육이 확산추세에 있다. 그러나 현재의 연구윤리 교육은 단발성 특강형의 교육 중심으로 실행되고 있으며, 학과 특성에 적합한 교육 체계가 미비하다는 점에서 한계를 가지고 있다. 이에 본 연구는 디자인 석사학위 과정에 있는 학생의 논문 지도에 있어 표절을 미연에 방지할 수 있는 연구윤리 교육체계를 구축하되 특히 예술계에서만 존재하는 작품논문이라는 형식에 적합한 교육체계를 구축하기 위한 목적으로 이루어졌다. 연구는 디자인학부 석사학위 과정학생 10명을 대상으로 총 17개월 걸친 참여관찰을 통해 이루어졌으며 연구윤리 교육 콘텐츠의 제작, 교육 및 자료수집, 교육 결과의 피드백 및 기존 콘텐츠의 수정보완, 수정 보완 된 콘텐츠를 적용한 연구 시행, 결과 분석 총 5단계에 걸쳐 단계적으로 이루어졌다. 각각의 단계에서는 교육을 통한 콘텐츠 활용도 검증, 심층면접을 통한 연구 결과의 학계검증, 연구윤리 교육 참여자들의 논문 작성 및 표절률 검사라는 객관적 검증 장치를 두었다. 연구 과정에서 학술연구윤리 교육 콘텐츠, 디자인 연구윤리 교육 콘텐츠 두 종류의 교육 콘텐츠가 개발되었으며 논문리스트 작성노트, 디자인 연구노트, 인용연습노트 총 3개의 활용 콘텐츠가 개발되었다. 결과적으로 연구주제의 구체화 과정에서 논문리스트 작성노트를 활용한 논문 주제 독창성 검증, 논문 텍스트 작성 과정에서 인용노트 활용을 통한 인용 관련 표절여부 검증 및 디자인 연구노트 활용을 통한 작품 표절여부 검증, 최종적으로 카피검사 시스템 활용을 통한 정량적 표절률 검사의 3단계에 걸친 작품논문의 표절 예방 검증 교육체계가 구축되었다. With the growing awareness of research ethics, the education for it is being disseminated. However, it is having a limitation given that the current education of research ethics is centered on special lectures in short-term period, and department-specific educational system is lack. In respect of teaching students about thesis in graduate school, this study aims to establish an educational system to prevent plagiarism in advance, matching the environment where there is thesis portfolio for graduation only in art school. The research has been conducted with ten graduate school students in design department for 17 months in total through participatory observation, and is consisted of five stages: making educational contents of research ethics, collecting data, giving feedback of the education and evaluating or revising existing contents, conducting a research after applying the correction, and analyzing the result. We put objective verification tools at each stage such as verification of contents utilization through education, academic verification of the research result through in-depth interview, and inspection of thesis portfolio production and plagiarism rate by educational participants in research ethics. In the process of the research, educational contents of academic research and design research ethics were developed and three kinds of utilization contents, thesis list-writing note, design research note, and reference note, were made. As a result, it has become to set up three phases of plagiarism prevention measures: verifying creativity of thesis subject by utilizing thesis list-writing note in the embodiment process, verifying plagiarism relating to reference and artwork by utilizing reference note and design research note in the process of making thesis artwork, and verifying quantitatively through copy inspection system.

병원중심 가정간호중재 분석 : NIC 체계 적용

용진선,유인자,유지연 성인간호학회 2000 성인간호학회지 Vol.12 No.4

The purpose of the study was to investigate the characteristics of the clients registered in the department of home health care nursing in a hospital and to analyze nursing intervention activities recorded in charts by application of Nursing Intervention Classification (NIC) system For the descriptive survey study, data were collected by reviewing charts of 572 home health care clients between May. 1997 and July, 2000 at K hospital in Seoul. The average alee of the clients was 66 years and the number of clients in their 70s ranted first with 28.2 percent(158 people). The mean length of home care servile was 47 days with the highest frequency of less than four weeks(56 %). With regard to medical diagnosis, cancer showed the highest frequency (48%. 271 people) fellowed by cerebrovascular disease (19%). anti pulmonary disease (6.9%). According to analysis of nursing interventions by the NIC system, the most frequently used nursing interventions in level 1 were interventions in the Physiological: Complex domain which were used 3.663 times (33%) among 11.107 total interventions. The Safety domain was the second most frequently used intervention, followed by the Physiological Basic, and the Behavioral domains. In level 2. the Risk Management class was the most frequently used interventions with 3,108 interventions (27.9%). followed by Drug Management, and Tissue Perfusion Management classes. In level 3 interventions. Vital Sign Monitoring was the most frequently used intervention. 569 times (5.1%) followed by Health Screening, and Neurological Monitoring interventions. In sum, half of the clients in the study had cancer and were in their 70s. The most frequent reason for ending home care was death(40%). followed by readmission (28%). These findings represent clients with severe conditions referred to the home care nursing decal-foment as it was a University leaching hospital. Further research on analyzing nursing interventions performed in earth institution needs to be conducted to develop a standardized list of nursing interventions to use in home health care settings.

부산지역 수돗물과 지하수의 중금속 농도

김준연,손지언,김형수,김두희,원미숙,김인식,이혜령 동아대학교 산업의학연구소 2000 산업의학연구소 논총 Vol.- No.5

This study investigated mean airborne CO concention of 15 workplaces, suspected of CO exposure and conducted self-reported questionnaire completion and indirect COHb concentration measure using Micro II Smokerlyzer to healthy 702 adult subjects from 1999 May to 1999 September in order to find a relation of CO exposure and occupational factors, socioeconomic factors, and health related behaviors and confirm the related conditions in the screening test for CO exposure. The results of this study were summarized as follows : 1. In the CO exposed and non exposed group, COHb concentrations of the smokers were 2.55±0.96% and 2.21±0.97% and that got a statistically significant difference, There were not statistically significant differences in the age and total smoking index. Passed times after the last smoking, Working time/day, and working duration were statistically significant difference (p〈0.05). 2. In the CO exposed and non exposed group, COHb concentrations of non-smoking group were 0.94±0.35% and 0.68±0.47% and that got a statistically significant difference. There were not statistically significant differences in the age and working duration but Working time/day was a statistically significant difference(p〈0.05). 3. In the CO exposed group, r-square of multiple regression of the smokers was 38.5 % and passed time after the last smoking, working time/day, and job category were statistically significant differences (p〈0.05). And r-square in the CO non-exposed group was 38.3 % and age, passed time after the last smoking, and total smoking index were statistically significant difference. 4. In the CO exposed group, r-square of multiple repression of the non-smokers was 66.3% and job category and airborne CO concentration were statistically significant differences(p〈0.05). But r-square of non-smokers in the CO non-exposed group was 1.0% and there was not a statistically significant difference(p〈0.05). 5. In the smokers of CO exposed and non exposed groups, relation of COHb concentration and passed time after the last smoking was expressed as exponential function, Y = 2.9182e-0.0083x and r-square of this function was 37.4%. Therefore it was more than 150 minutes that passed time after the last smoking was when COHb concentrations were measured as less than 1%. In conclusion, variable, that was statistically significant to COHb concentraion in the both CO exposed and non-exposed smokers, was a passed time after the last smoking. We suggest that you have to restrict the smoking of smokers at least 150 minutes in the exposed and non exposed group before COHb concentration measure in order to exclude smoking effects

울산 석유화학공단 인근 어린이들의 혈액상변화 및 면역기능

이충렬,유철인,이지호,이헌,김양호 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2

목적 : 지역 특성상 휘발성 유기화합물, 분진, 악취 등 환경오염의 영향을 많이 받는 것으로 추정되는 울산석유화학공단 인근 어린이들의 혈액상 변화, 계절 차이에 의한 혈액상 변화와 면역기능에 미치는 영향을 평가하기 위하여 본 연구를 실시하였다. 방법 : 2000년 4월, 7월, 10월 3회에 걸쳐 석유화학공단 인근 A 초등학생 46명(남자 32명, 여자 14명), B 초등학생 97명(남자 49명, 여자 48명)과 교외지역의 A 초등학생 95명(남자 47명, 여자 48명)을 대상으로 일반혈액검사, 백혈구 백분율 검사를 실시하였으며 7월 조사 때는 B 및 C 초등학생 11세 남자 각각 25명을 대상으로 면역학적 기능검사를 실시하였다. 결과 : 3차례에 걸쳐 진행된 검사결과는 계절별로 다른 양상을 보여 주었다. 즉, 총백혈구수, 호중구수, 림프구수는 A와 C 초등학생은 7월 조사에서는 감소되었다 다시 10월 조사 때는 다시 증가하는 경향을 보여주며, B초등학생은 계절별 변화가 거의 없는 것으로 나타났다. 적혈구수는 B와 C 초등학생은 7월 조사시 감소되었다가 10월 조사 때는 다시 증가하는 양상을 보여주나 A 초등학생은 갈수록 감소하는 경향을 보여주었다. 혈색소량의 변화는 적혈구수의 변화와 유사하였다 혈소판수는 모두 7월 조사 때는 감 소되었다가 10월 조사 때는 다시 증가하는 양상을 보여주었다. 조사시기에 따라 각 학교 어린이들간에 혈구세포수의 차이가 있음을 구명하기 위하여 generalized linear model의 repeated measures ANOVA를 시도한 결과 연령과 성을 공변인으로 보정한 후의 P 값에서 조사시기의 차이와 학교간 차이의 교호작용변수(interaction variable)는 모든 혈구세포에서 유의한 것으로 나타났다(P<0.05). 이는 조사시기에 따라 각 학교어린이들간에 혈구세포수의 차이가 유의하게 다르다는 것을 의미한다. 면역기능 평가를 위하여 혈중 immunoglobulin 측정 및 림프구 아형 분포분석을 B 및 C 초등학생 6학년 남학생 각 25명, 총 50명을 대상으로 실시하였으나 모두 정상범위이었고 학교간 차이도 없었다. 결론 : 휘발성 유기화합물 같은 물질에 쉽게 영향을 받을 수 있는 백혈구와 적혈구 등의 혈구세포는 조사시기에 따라 각 학교어린이들간에 혈구세포수의 차이가 유의하게 나타남은 각 학교 어린이들간에 조사시기에 따라 혈구세포수에 영향을 주는 휘발성 유기화합물의 노출량의 차이가 중요한 원인 중 하나일 것으로 추정된다. 향후 혈구세포의 변화의 원인이라 추정되는 휘발성 유기화합물의 기중 농도측정이나 체내 생체지표검사를 통한 노출원 조사를 병행하는 추가적 조사가 필요한 것으로 사료된다. Objectives : To evaluate the hematological changes and the immunological function of children living near the petrochemical estate in Ulsan. Methods : The study subjects comprised of 238 children who consisted of 143 children living near the petrochemical estate and 95 children living in a suburban area. We conducted the hematological examination 3 times, in April, July and October. Also we evaluated the immunological function of some children in July. To confirm differences between schools repeated measures ANOVA of generalized linear model was done controlling age and sex as covariates. Results : The blood cell counts of children showed differences between schools in accordance with the survey month. The total WBC, neutrophil, and lymphocyte counts of children living in a suburban area decreased in July and increased in October again, but those of some children living near the petrochemical estate did not changed distinctly. The RBC counts of children living in a suburban area decreased in July and increased in October again, but those of some children living near the petrochemical estate decreased as time passed. The changes of the amount of hemoglobin of all study subjects were similar with those of RBC. The platelet counts of all study subjects decreased in July and increased in October again. In the generalized linear model, school was a significant independent variable for the total WBC, RBC, and platelet counts, and sex was a significant independent variable for the RBC counts. Age was a significant independent variable for the iymphocyte and platelet counts. P values of all blood cell were statistically significant in interaction variable between the survey month and school, and those of the total WBC, neutrophil, and iymphocyte counts were statistically significant in interaction variable between the survey month and age. The immunological function showed no significant difference between study groups. Conclusions : The total WBC and RBC counts which would be easily affected by volatile organic compounds (VOCs) in the atmosphere showed differences between schools in accordance with the survey month. This suggests that the amounts of exposure to VOCs are different among each school children in different months. To ascertain the hematological changes by VOCs, an additional study evaluating the concentrations of atmosphere of VOCs and biological monitoring of some VOCs is needed.