Airborne allergenic pollen grains on a farm in West Bengal, India

Chakraborty, Pampa; Gupta‐Bhattacharya, Swati; Chakraborty, Chanchal; Lacey, J.; Chanda, Sunirmal

doi:10.1080/00173139809362640

Cited by 40 publications

(32 citation statements)

References 12 publications

(13 reference statements)

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“…Trema orientalis was found to be comparatively less reactive (9.20%) with almost no evidence of +2 level/ more reaction as reported in earlier studies 14 . Severity and prevalence of allergic asthma is often related to airborne allergenic pollen exposure 16 .…”

supporting

confidence: 66%

“…On the contrary, some other reports 13,14 indicated the dominance of herbaceous taxa in the atmospheric pollen load. Seasonal periodicity pattern was clearly reflected in the pollen calendar.…”

mentioning

confidence: 46%

“…Meteorological parameters also play an important role in phenology, pollen release and dispersal of grains in the atmosphere. Among the allergenic pollen, type grass members, the most important aeropollen contributor, showed the highest positivity in most of the studies from India and abroad too 14,15 . Interestingly, the second dominant contributor…”

mentioning

confidence: 99%

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Atmospheric Pollen Grains of a Suburban Area near India-Bangladesh Border with Reference to their Allergenic Potential and Probable Effect on Asthma-Related Hospital Admission

Chakraborty¹,

Ghosal²,

Sarkar³

et al. 2016

Current Science

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To study the role of atmospheric pollen on respiratory allergy and asthma-related hospitalization (ARH), a pollen calendar was prepared for a suburban area (Habra) of West Bengal, near India-Bangladesh border on the basis of seven-year (2007-2013) aeropollen monitoring with Burkard slide-sampler. Among 40 pollen types, Poaceae/grass showed highest contribution (12.32%) followed by Trema orientalis (11.45%) and others. Among 30 allergenic pollen types, Poaceae/ grass showed the highest sensitivity in skin-prick test (>50%) and IgE-ELISA. ARH of local population (n = 9492) showed significant positive correlation (P < 0.05) with airborne pollen of grass, Bombax ceiba, Mangifera indica and total aeropollen too.

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supporting

confidence: 66%

mentioning

confidence: 46%

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Atmospheric Pollen Grains of a Suburban Area near India-Bangladesh Border with Reference to their Allergenic Potential and Probable Effect on Asthma-Related Hospital Admission

Chakraborty¹,

Ghosal²,

Sarkar³

et al. 2016

Current Science

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“…This is particularly true for the Indian subcontinent, which contains ∼ 18 % of the world's total population, where studies related to the bioaerosols are relatively few and with analysis performed only by traditional techniques (Bhati and Gaur, 1979;Chakraborty et al, 1998;Gangamma, 2014;Srivastava et al, 2012;Sharma and Rai, 2008;Pachauri et al, 2013;Valsan et al, 2015;Ansari et al, 2015;Adhikari et al, 2004). The abundance of bioaerosols, which are strongly dependent on location and season, remains poorly characterized over the Indian subcontinent and needs to be addressed systematically.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent biological aerosol particle measurements at a tropical high-altitude site in southern India during the southwest monsoon season

Valsan

Ravikrishna

Biju³

et al. 2016

Atmos. Chem. Phys.

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Abstract. An ultraviolet aerodynamic particle sizer (UV-APS) was continuously operated for the first time during two seasons to sample the contrasting winds during monsoon and winter to characterize the properties of fluorescent biological aerosol particles (FBAPs), at a high-altitude site in India. Averaged over the entire monsoon campaign (1 June–21 August 2014), the arithmetic mean number and mass concentrations of coarse-mode (> 1 µm) FBAPs were 0.02 cm−3 and 0.24 µg m−3, respectively, which corresponded to ∼  2 and 6 % of total aerosol loading, respectively. Average FBAP number size distribution exhibited a peak at ∼  3 µm, which is attributed to the fungal spores, as supported by scanning electron microscope (SEM) images, and these results are consistent with previous studies made for FBAPs. During 11 weeks of measurements the variability of the total coarse-mode particle number (TAP) concentration was high compared to that observed in FBAP number concentrations. The TAP and FBAP number concentrations measured at this site were strongly dependent on changes in wind direction and rainfall. During periods of westerly/southwesterly winds with heavy persistent rainfall, the TAP and FBAP concentrations exhibited very low values (1.3 and 0.005 cm−3, respectively) with no significant diurnal variations, whereas during periods of northerly winds with scattered rainfall FBAPs exhibited relatively high concentration values (0.05 cm−3) with pronounced diurnal variations, which were strongly coupled with diurnal variations in meteorological parameters. The campaign-averaged FBAP number concentrations were shown to correlate with daily patterns of meteorological parameters and were positively correlated with relative humidity (RH; R2  =  0.58) and negatively with temperature (R2  =  0.60) and wind speed (R2  =  0.60). We did not observe any significant positive correlation with precipitation as reported by previous researchers from selected areas. These measurement results confirm the fact that the ratio of PBAPs to TAP is strongly dependent on particle size and location and thus may constitute a significant proportion of total aerosol particles.

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“…The Palmae (Arecaceae) family comprises 4 commonly cultivated palms of West Bengal state of India, and the pollen grains of these species were found to be highly cross-reactive as evident from immunoblot inhibition experiments [57, 58]. Out of 70 patients tested for skin reactivity against these 4 pollen extracts, Betel nut ( Areca catechu ) exhibited the maximum percentage (48.5%) of positive cutaneous responses followed by coconut ( Cocos nucifera ; 45.7%), Date palm ( Phoenix sylvestris ; 42.85%), and Palmyra palm ( Borassus flabellifer ; 38.5%).…”

Section: Molecular Allergology In Indiamentioning

confidence: 99%

Spectrum of Allergens and Allergen Biology in India

Bhattacharya

Sircar

Dasgupta³

et al. 2018

Int Arch Allergy Immunol

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The growing prevalence of allergy and asthma in India has become a major health concern with symptoms ranging from mild rhinitis to severe asthma and even life-threatening anaphylaxis. The “allergen repertoire” of this subcontinent is highly diverse due to the varied climate, flora, and food habits. The proper identification, purification, and molecular characterization of allergy-eliciting molecules are essential in order to facilitate an accurate diagnosis and to design immunotherapeutic vaccines. Although several reports on prevalent allergens are available, most of these studies were based on preliminary detection and identification of the allergens. Only a few of these allergen molecules have been characterized by recombinant technology and structural biology. The present review first describes the composition, distribution pattern, and natural sources of the predominant allergens in India along with the prevalence of sensitization to these allergens across the country. We go on to present a comprehensive report on the biochemical, immunological, and molecular information on the allergens reported so far from India. The review also covers the studies on allergy- related biosafety assessment of transgenic plants. Finally, we discuss the allergen-specific immunotherapy trials performed in India.

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Airborne allergenic pollen grains on a farm in West Bengal, India

Cited by 40 publications

References 12 publications

Atmospheric Pollen Grains of a Suburban Area near India-Bangladesh Border with Reference to their Allergenic Potential and Probable Effect on Asthma-Related Hospital Admission

Atmospheric Pollen Grains of a Suburban Area near India-Bangladesh Border with Reference to their Allergenic Potential and Probable Effect on Asthma-Related Hospital Admission

Fluorescent biological aerosol particle measurements at a tropical high-altitude site in southern India during the southwest monsoon season

Spectrum of Allergens and Allergen Biology in India

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