Airway Inflammatory Profile Among Cleaning Workers From Different Workplaces
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- University of Sao Paulo
- Enrollment
- 167
- Locations
- 1
- Primary Endpoint
- Cell differentiation for the evaluation of nasal epithelial inflammation
Study Overview
Brief Summary
There are consistent evidences through epidemiologic studies in different places, reinforced by occupational asthma records studies, that cleaning workers have a high risk in developing asthma. These risk determinants are not totally known. The air around the worker may have some higher and lower molecular weight with different concentration peaks from removed dust of the cleaning process and volatile substances from cleaning products. Cleaning activities may occur in different places. Although the relationship between rhinitis and asthma is already established, there are not many studies about occupational rhinitis-related work place. This study aimed to investigate airway inflammation and respiratory symptoms of cleaning workers from different workplaces.
Detailed Description
Were recruited to participate in the study individuals from four different workplaces: Hospital; University; Housekeeper and Control (office workers). The research was performed in Cacoal city, Rondonia, Brazil. Smokers (active), pregnant, lactating, and individuals at continuing therapy for treating disorders of the airways were excluded.
Clinical profile and respiratory symptoms employees evaluation were performed using the European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module.
Nasal swab was collected for evaluation of upper airways inflammation, according to Ronchetti et al protocol, using a sterile swab that was moistened with 1mL saline solution; both nostrils were scraped using this swab. Twenty minutes after this, laminas were stained using May-Grunwald-Giemsa to eosinophils, neutrophils, lymphocytes, macrophages and epithelial cells identification. Cells were analyzed using a Nikon E600 optical microscope (Nikon, Canada), of 1.000 x magnitude. Whenever possible a total of 200 cells were counted in two slides.
Statistical analysis were performed using Anova variance (Kruskal-Wallis) and Dunn's test for comparisons between groups. To evaluate the association between the qualitative variables we used the chi-square, Statistical software Sigma Plot 12.0 and SPSS 21.0. The confidence interval was 95% (p <0.05).
Study Design
- Study Type
- Interventional
- Allocation
- Non Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Other
- Masking
- Single (Participant)
Masking Description
Participants, divided in four groups based on workplace: Hospital, University, Housekeeper and Control.
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Cleaning workers from different workplaces
- •Non-cleaning workers (control group)
- •People legally capable (over 18 years old)
- •Must be able to nasal swab collection and answer questionnaires
- •Sign the informed consent form
Exclusion Criteria
- •Smokers (active)
- •Pregnant (women)
- •Lactating (women)
- •Not accept the informed consent form
- •Individuals at continuing therapy for airways treating disorders
Arms & Interventions
Hospital
Hospital cleaning workers Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Nasal swab (Other)
Hospital
Hospital cleaning workers Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Questionnaires (Other)
University
Campus (university) cleaning workers Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Nasal swab (Other)
University
Campus (university) cleaning workers Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Questionnaires (Other)
Housekeeper
Housemaid (cleaning workers) Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Nasal swab (Other)
Housekeeper
Housemaid (cleaning workers) Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Questionnaires (Other)
Control
Office workers (no relationship to cleaning) Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Nasal swab (Other)
Control
Office workers (no relationship to cleaning) Nasal swab was collect to upper airways inflammation evaluation. Clinical profile and respiratory symptoms employees' evaluation were performed using specific questionnaires (European Community Respiratory Health Survey for occupational diseases evaluation (ECRHS), (adapted by Ribeiro et al, 2007) and the International Study of Asthma and Allergies in Childhood (ISAAC) - Asthma module, previously translated and validated.
Intervention: Questionnaires (Other)
Outcomes
Primary Outcomes
Cell differentiation for the evaluation of nasal epithelial inflammation
Time Frame: One day
Nasal swab will be collected to analyze cell differentiation
Measure of respiratory symptoms
Time Frame: One day
Questionnaires to analyze respiratory symptons
Secondary Outcomes
No secondary outcomes reported
Investigators
Beatriz Mangueira Saraiva Romanholo
Clinical Professor
University of Sao Paulo