Byssinosis in Hemp Workers

Bouhuys, Arend; Barbero, A.; Lindell, S.‐E.; Roach, S. A.; Schilling, R. S. F.

doi:10.1080/00039896.1967.10664790

Cited by 61 publications

(22 citation statements)

References 7 publications

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“…Dust concentrations in hemp factories where men are affected by byssinosis varied from 1.2 to 6.4 mg/m3 in a previous study (1); there was no clear relation between dust levels and prevalence of symptoms or changes of FEVy.o. The factory rooms used for the present exposures were visually very dusty, and since we were only interested in studying man's response, we did not repeat the dust measurements.…”

Section: Methodsmentioning

confidence: 63%

“…After correction for the curvilinear recording of the spirometer ( Fig. 1 B and C), the curves in a healthy subject were nearly superim- 1 Poulton & Son, Barry, Glamorgan, U. K. 2 Model 564, Tektronix, Inc., Beaverton, Ore.…”

Section: Methodsmentioning

confidence: 98%

“…The study was performed in Callosa de Segura, Spain. Conditions in the hemp industry in that town and the high prevalence of byssinosis and chronic obstructive lung disease among certain categories of hemp workers have been described in previous papers (1,2). The subjects for the present study were chiefly recruited among those who participated in the previous studies.…”

Section: Methodsmentioning

confidence: 99%

“…However, most previous studies in the industry have been limited to relatively simple tests (1,3,6). We used a body plethysmograph to obtain additional information and were thus able to correlate the results of several different tests which reflect the mechanical properties of the lungs.…”

Section: Introductionmentioning

confidence: 99%

“…Many workers exposed to dust of soft hemp (Cannabis sativa) in industry develop byssinosis (1,2). The symptoms of this occupational lung disease resemble those of bronchial asthma but occur under predictable conditions, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Respiratory mechanics and dust exposure in byssinosis

Bouhuys¹,

Woestijne²

1970

J. Clin. Invest.

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A B S T R A C T Acute exposures to hemp dust, in healthy subjects as well as hemp workers with byssinosis, resulted in two different responses. Men with symptoms (chest tightness, coughing, and wheezing) after exposure showed decreases of forced expiratory volumes (FEV1.o), flow rates on maximum expiratory flow-volume (MEFV) curves, and of vital capacity (VC), while airway conductance (Gaw: TGV ratio) did not decrease significantly ("flow rate response"). Men without symptoms after exposure showed no changes of VC, FEV.o, and MEFV curves, but had a significantly decreased airway conductance ("conductance response").

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Section: Methodsmentioning

confidence: 63%

Section: Methodsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Respiratory mechanics and dust exposure in byssinosis

Bouhuys¹,

Woestijne²

1970

J. Clin. Invest.

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Potential occupational and respiratory hazards in a Minnesota cannabis cultivation and processing facility

Couch

Grimes

Wiegand

et al. 2019

American J Industrial Med

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Background: Cannabis has been legalized in some form for much of the United States.The National Institute for Occupational Safety and Health (NIOSH) received a health hazard evaluation request from a Minnesota cannabis facility and their union to undertake an evaluation.Surface wipe samples were collected for analysis of delta-9 tetrahydrocannabinol (Δ9-THC), delta-9 tetrahydrocannabinol acid (Δ9-THCA), cannabidiol, and cannabinol.Environmental air samples were collected for volatile organic compounds (VOCs), endotoxins (limulus amebocyte lysate assay), and fungal diversity (NIOSH two-stage BC251 bioaerosol sampler with internal transcribed spacer region sequencing analysis).Results: Surface wipe samples identified Δ9-THC throughout the facility. Diacetyl and 2,3-pentanedione were measured in initial VOC screening and subsequent sampling during tasks where heat transference was greatest, though levels were well below the NIOSH recommended exposure limits. Endotoxin concentrations were highest during processing activities, while internal transcribed spacer region sequencing revealed that the Basidiomycota genus, Wallemia, had the highest relative abundance. Conclusions:To the authors' knowledge, this is the first published report of potential diacetyl and 2,3-pentanedione exposure in the cannabis industry, most notably during cannabis decarboxylation. Endotoxin exposure was elevated during grinding, indicating that this is a potentially high-risk task. The findings indicate that potential health hazards of significance are present during cannabis processing, and employers should be aware of potential exposures to VOCs, endotoxin, and fungi. Further research into the degree of respiratory and dermal hazards and resulting health effects in this industry is recommended.

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Irregular opacities in the lung, occupational asthma, and airways dysfunction in aluminum workers

Kilburn

Warshaw

1992

American J Industrial Med

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We examined chest X-rays, measured expiratory flows and FVC by spirometry and TLC by projected lung area, ascertained respiratory data by questionnaires, and performed chest examinations in 670 Southeastern aluminum workers and 659 unexposed regional controls. Both groups were asbestos exposed. More aluminum workers had irregular opacities and fewer had pleural abnormalities than did regional pipefitter referents. The pulmonary function tests were expressed as percentage of predicted to adjust for height, age and duration of smoking based on a randomly selected U.S. reference population. Data from aluminum workers were compared to regional controls with students "t" tests run for unequal size groups. Aluminum workers had significant reductions in FEV1 of 3.2% predicted (p less than .003), FEF25-75 of 11.3% predicted (p less than .0001), FEF75-85 of 22.5% predicted (p less than .0001), and an increased TLC of 2.0% predicted (p less than .005). The 145 who had never smoked (NS) were compared with 124 NS controls and showed this same pattern of differences; but in smokers, the differences were significant for mid and terminal flows, but not for FEV1. In aluminum workers who never smoked, asthma prevalence by history was 7.6% vs. 4.0% in controls, and wheezes were heard in 21.4% vs. 2.4% in controls. In aluminum workers who were current smokers, asthma prevalence was 16.4% vs. 9.4% in controls, and wheezes were heard in 43.7% vs. 21.1% in controls. Aluminum workers had significantly more asthma, wheezing, airways obstruction, and pulmonary parenchymal abnormalities similar to asbestosis than did regional blue collar controls not melting and casting aluminum.

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Byssinosis in Hemp Workers

Cited by 61 publications

References 7 publications

Respiratory mechanics and dust exposure in byssinosis

Respiratory mechanics and dust exposure in byssinosis

Potential occupational and respiratory hazards in a Minnesota cannabis cultivation and processing facility

Irregular opacities in the lung, occupational asthma, and airways dysfunction in aluminum workers

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