Details:

Alternative Title:
Environ Res
Publisher's site:
http://dx.doi.org/10.1016/j.envres.2020.109728
Personal Author:
Suárez-López, José R. ; Nazeeh, Noor ; Kayser, Georgia ; Suarez-Torres, Jose ; Checkoway, Harvey ; ... More +
Suárez-López, José R. ; Nazeeh, Noor ; Kayser, Georgia ; Suarez-Torres, Jose ; Checkoway, Harvey ; López-Paredes, Dolores ; Jacobs, David R. ; de la Cruz, Franklin Less -
Description:
Background

Off-target drift of pesticides from farms increases the risk of pesticide exposure of people living nearby. Cholinesterase inhibitors (i.e. organophosphates and carbamates) are frequently used in agriculture and inhibit acetylcholinesterase (AChE) activity. Greenhouse agriculture is an important production method, but it is unknown how far pesticide drift from greenhouses can extend and expose people living nearby.

Methods

This study included 1156 observations from 3 exams (2008, Apr 2016 and Jul-Oct of 623 children aged 4-to-17 years living in agricultural communities in Ecuador. AChE, a physiological marker of cholinesterase inhibitor exposure, was measured in blood. Geographic positioning of greenhouses and homes were obtained using GPS receivers and satellite imagery. Distances between homes and the nearest greenhouse edge, and areas of greenhouse crops within various buffer zones around homes were calculated. Repeated-measures regression adjusted for hemoglobin and other covariates estimated change in AChE relative to distance from greenhouses.

Results

The pooled mean (SD) of AChE activity was 3.58 U/mL (0.60). The median (25th-75th %tile) residential distance to crops was 334 m (123, 648) and crop area within 500 m of homes (non-zero values only) was 18,482 m2 (7115, 61,841). Residential proximity to greenhouse crops was associated with lower AChE activity among children living within 275m of crops (AChE difference per 100m of proximity [95% CI]= −0.10 U/mL [−0.20, −0.006]). Lower AChE activity was associated with greater crop area within 500m of homes (AChE difference per 1000m2 [95% CI]= −0.026 U/mL [−0.040, −0.012]) and especially within 150m (−0.037 U/mL [−0.065, −0.007]).

Conclusions

Residential proximity to floricultural greenhouses, especially within 275m, was associated with lower AChE activity among children, reflecting greater cholinesterase inhibitor exposure from pesticide drift. Analyses of residential proximity and crop areas near homes yielded complementary findings. Mitigation of off-target drift of pesticides from crops onto nearby homes is recommended.


Subjects:
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Acetylcholinesterase Adolescent Agriculture Area Article Carbamate Child Child, Preschool Crops, Agricultural Ecuador Environmental Exposure Humans Organophosphate Pesticide Drift Pesticides Residential Proximity
Source:
Environ Res. 188:109728
Pubmed ID:
32798937
Pubmed Central ID:
PMC7483309
Document Type:
Journal Article
Funding:
R01 ES025792/ES/NIEHS NIH HHSUnited States/ ; R21 ES026084/ES/NIEHS NIH HHSUnited States/ ; R36 OH009402/OH/NIOSH CDC HHSUnited States/
R01 ES025792/ES/NIEHS NIH HHSUnited States/ ; R21 ES026084/ES/NIEHS NIH HHSUnited States/ ; R36 OH009402/OH/NIOSH CDC HHSUnited States/ Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:a2727ba18c144514a00a3a588208615572a0d8e4cca6a5916b952bfad9ec02ab
Download URL:
https://stacks.cdc.gov/view/cdc/93500/cdc_93500_DS1.pdf
File Type:

Supporting Files

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