Seasonal prevalence of allergenic mites in house dust of Kolkata Metropolis, India

Podder, Sanjoy; Gupta, Salil; Saha, Goutam Kumar

doi:10.1007/s10453-008-9107-1

Cited by 19 publications

(10 citation statements)

References 21 publications

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“…House dust mites are also proved as an independent risk factor for the urban population of West Bengal by several groups of researchers [6, 20]. In our study, house dust mites, namely D. pteronyssinus and D. farinae extracts, contribute the most significant SPT that is similar to any other Indian population [21]. The result was expected from any Indian population because of the humid climate and moderate temperature [22].…”

Section: Discussionsupporting

confidence: 60%

Sensitization to Common Aeroallergens in the Atopic Population of West Bengal, India: An Investigation by Skin Prick Test

Dey

Mondal

Laha

et al. 2018

Int Arch Allergy Immunol

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Background: Aeroallergen sensitization is increasing worldwide. The optimal management of allergic disease requires the identification of the allergic sensitivities of the patient. Complete data of offending aeroallergens are scant from West Bengal, India. Hence, we employed a retrospective analysis of an atopic population of West Bengal to investigate the rate of sensitivity toward common aeroallergens including pollens, molds and house dust mites. Objectives: The aim of the present study was to evaluate the profile of skin prick test (SPT) reactivity of an atopic population of eastern India. Methods: The prevalence aeroallergen sensitization was investigated by SPT along with a questionnaire survey of patients who visited the Allergy and Asthma Research Center of West Bengal, India, from June 2016 to May 2018. Patients were categorized according to the demographic (age, gender) and clinical aspects. Statistical tests were applied to differentiate between age and gender of the sufferers. Results: 524 out of 605 patients exhibited a positive SPT response toward one or more aeroallergens tested. One-way ANOVA following Tukey’s post hoc test reveals the age group of 15–40 years was more sensitized than that of < 15 years and no male-female discrimination was found using the paired t test. House dust mites, namely Dermatophagoides pteronyssinus and Dermatophagoides farinae, elicited most significant SPT results (80.34 and 84.92%, respectively) followed by Cocos (73.28%) and Azaridacta (57.25%) pollen. The most sensitive mold was Alternaria alternata (26.9%). Allergic rhinitis, bronchial asthma and atopic dermatitis were recorded as the common symptoms. Other influencing factors were family history, nature and season/time of onset and house conditions. Conclusion: Following the increasing trend, house dust mite sensitization still held the dominance like in any other Indian population reported earlier. This study would pave the way to construct a standard and minimal SPT panel for the atopic patients of eastern India.

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Section: Discussionsupporting

confidence: 60%

Sensitization to Common Aeroallergens in the Atopic Population of West Bengal, India: An Investigation by Skin Prick Test

Dey

Mondal

Laha

et al. 2018

Int Arch Allergy Immunol

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“…However, the simplest explanation for the observed increases of mite loads during the wet summer season may be the positive effects of increased humidity on mites as has been shown repeatedly for various mite species e.g. [28] , [30] .…”

Section: Discussionmentioning

confidence: 92%

“…Apart from these factors, parasites respond to external environmental cues such as temperature and humidity to proliferate, thereby affecting their seasonal pattern of abundance e.g. [28] , [29] , [30] . From the above it is apparent that seasonal patterns of parasite abundance can result from a number of factors that are not always mutually exclusive and their individual contributions may be difficult to disentangle.…”

Section: Introductionmentioning

confidence: 99%

The Role of Host Traits, Season and Group Size on Parasite Burdens in a Cooperative Mammal

et al. 2011

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The distribution of parasites among hosts is often characterised by a high degree of heterogeneity with a small number of hosts harbouring the majority of parasites. Such patterns of aggregation have been linked to variation in host exposure and susceptibility as well as parasite traits and environmental factors. Host exposure and susceptibility may differ with sexes, reproductive effort and group size. Furthermore, environmental factors may affect both the host and parasite directly and contribute to temporal heterogeneities in parasite loads. We investigated the contributions of host and parasite traits as well as season on parasite loads in highveld mole-rats (Cryptomys hottentotus pretoriae). This cooperative breeder exhibits a reproductive division of labour and animals live in colonies of varying sizes that procreate seasonally. Mole-rats were parasitised by lice, mites, cestodes and nematodes with mites (Androlaelaps sp.) and cestodes (Mathevotaenia sp.) being the dominant ecto- and endoparasites, respectively. Sex and reproductive status contributed little to the observed parasite prevalence and abundances possibly as a result of the shared burrow system. Clear seasonal patterns of parasite prevalence and abundance emerged with peaks in summer for mites and in winter for cestodes. Group size correlated negatively with mite abundance while it had no effect on cestode burdens and group membership affected infestation with both parasites. We propose that the mode of transmission as well as social factors constrain parasite propagation generating parasite patterns deviating from those commonly predicted.

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“…HDM's and their prevalence in different locations and habitats strongly affected by abiotic factors (Munir 1998;Deschildre 1999;Melson and Brinchl 2001;Arlian 2002;Thomas et al 2004;Podder et al 2008;and Soltani et al 2011).…”

Section: Literature Supporting Role Of Abiotic Factorsmentioning

confidence: 99%

Role of Abiotic Factors on House Dust Mite Population: Control and Allergen Avoidance - A Review Article

Dhaliwal¹

2022

JSR

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House dust mites (HDM’s) are an important source of indoor allergens in the house dust and cause various kinds of allergies. They are strongly influenced by abiotic factors such as temperature, relative humidity and seasonal variations. HDM’s are present in houses all over the year but their number varies in different seasons and habitats. The moderate environmental temperature, high relative humidity and adequate food sources are the key factors for their proliferation. The season has a great effect on the mite population. In the rainy season, moderate temperature and high relative humidity are the favorable conditions for the growth of mites, and the population of mites reaches a peak level. Whereas, high temperature and low relative humidity during summer season significantly reduce the mite population level and in the winter season, fall in temperature will drastically reduce the mite number because mites perish due to chilling. Relative humidity of a particular place plays an important role in the growth of mites. By controlling the relative humidity of a particular place, the HDM allergens can be reduced in that place. The prevalence of these mites and their allergen content vary within the locations in the home. Mattresses, carpets, sofas are the main reservoir of HDM’s, as the dust and shed skin scales accumulate in these places and provide abundant nutrition to dust mites. To reduce the allergen content from houses, frequent cleaning and vacuuming of mattresses and pillows, the use of encasement should be advised for allergic subjects.

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Seasonal prevalence of allergenic mites in house dust of Kolkata Metropolis, India

Cited by 19 publications

References 21 publications

Sensitization to Common Aeroallergens in the Atopic Population of West Bengal, India: An Investigation by Skin Prick Test

Sensitization to Common Aeroallergens in the Atopic Population of West Bengal, India: An Investigation by Skin Prick Test

The Role of Host Traits, Season and Group Size on Parasite Burdens in a Cooperative Mammal

Role of Abiotic Factors on House Dust Mite Population: Control and Allergen Avoidance - A Review Article

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