A study of airborne pollen monitoring and its connection with allergic rhinitis visits in Taiyuan over the summer and autumn seasons / 临床耳鼻咽喉头颈外科杂志

Objective:To explore the distribution of airborne pollen in summer and autumn in Taiyuan, analyze the correlation between pollen characteristics, meteorological factors and allergic sensitization, and provide for the prevention and treatment of allergic diseases in this. Methods:The gravity sedimentation method was used to investigate the types, quantities and dispersion patterns of airborne pollen in Taiyuan City from July 21, 2022 to October 20, 2022. he meteorological and patient information was collected during the same period SPSS 26.0 software. Results:①A total of 17 118 pollen grains were collected, and identified as 14 families, 10 genera, and 4 species. The peak period for pollen dispersal in summer and autumn in Taiyuan City from late August to early September. airborne pollen Artemisia（66.62%）, Cannabis/Humulus（17.79%）, Sophora japonica（8.18%）, Chenopodiaceae/Amaranthaceae（2.83%）, Gramineae（2.11%）. ②The concentration of airborne pollen in Taiyuan City positively correlated with the average temperature（5-20℃） and maximum temperature（11-30℃） within a certain range（r=0.547, 0.315, P<0.05）. ③The content of airborne pollen in Taiyuan City positively correlated with the number of visits and allergen positive rate of patients with allergic rhinitis（AR） in our hospital（r=0.702, 0.747, P<0.05）. Conclusion:The peak period for airborne pollen dispersal during the summer and autumn seasons in Taiyuan City from late August to early September. The dominant pollen is Artemisia, Cannabis/Humulus, Sophora japonica, Chenopodiaceae/Amaranthaceae, Gramineae, and the absolute advantage pollen is Artemisia. Meteorological factors pollen content. Within a certain range, temperature the diffusion and transportation of pollen. The number of pollen grains the number of visits, which can serve as an environmental warning indicator for AR patients to take preventive, thereby reducing the risk of allergies.

Seasonal and geographical dispersal regularity of airborne pollens in China / 解放军医学杂志

Allergic diseases can be induced by abundant airborne allergenic pollens with symptoms such as allergic rhinitis and bronchial asthma,which can seriously threaten human health.The species and distribution of airborne pollens differed in different regions,based on the difference of geographical environment and climate conditions.Therefore,the occurrence of pollinosis was of obviously regional and seasonal divergence.Inappropriate urban greening,tree species selection and environmental pollution have contributed to a dramatic increase in the number of pollen sensitizing plants and hay fever.The species and dispersal regularity of allergenic pollen plants in different administrative areas in China in recent 10 years are reviewed in present paper for providing scientific basis on controlling pollinosis and reasonable greening of urban environment.

The correlation between allergy sensitization rate in pediatric and aerobiological study for airborne pollen in Busan for 15 years

PURPOSE: Airborne pollen is the most common causative agents of allergic disease. Since 2000, there isn't no more report about airborne pollen in Busan. This study is that pollen in one area of Busan was collected to investigate species, particle counts, seasonal distribution, and of its correlation with reactivity to skin prick test in children during 1998-2012. METHODS: Rotorod sampler was installed on the rooftop of St. Mary Hospital in Busan. A 24-hour sampling of airborne allergens over a fifteen-year period was conducted 6 days/wk from January 1, 1998 to December 31, 2012. After staining they were identified, counted and recorded with the weather in Busan. RESULTS: Major pollens collected were Pine, Alder, Oak, Juniperus, Humulus. The pollen season is relatively short and the pollen dispersed mainly during the period from March to May in case of tree pollen, from April to September in case of grass pollen and from August to October in case of weed pollen. Total annual pollen count ranged from 36,412 grains/m3 (2002) to 1,342 grains/m3 (2006). The peak pollen season was seen for spring and autumn, especially in May and September during 1998-2012. In skin prick tests, birch was the highest sensitization rate (15.1%), followed by alder (14.7%), hazel (14.1%) in the tree for 15 years. And in weed, mugwort and ragweed were the highest sensitization rate (10.6%, 10.3%), followed by humulus (5.5%) for 15 years, but since 2008, was increased. CONCLUSION: Analysis of pollens sampled in the atmosphere of Busan, Korea, for a 15-year period identified 24 species of pollens with seasonal variation of some clinically important pollen load. Analysis of data, it showed that alder and birch are main allergen in spring for 15 years, and in 1998-2008, ragweed and artemisia was main allergen in fall, since 2009, followed by humulus.

Concentration of airborne pollen in Beijing city with burkard sampler / 临床耳鼻咽喉头颈外科杂志

Objective:To investigate the airborne pollen concentration in Beijing city during autumn and to grade the Artemisia pollen concentration .Method:Burkard volumetric trap was used to sample the airborne pollen in Beijing city from August 1st 2007 to October 10th 2007. Patients only allergic to mugwort pollen were followed up, and their symptom scores and the mugwort pollen concentration were analyzed statistically.Result:①Mugwort and Humulus(including Cannabis Sativa L) were the main airborne pollen during August and September in Beijing city, accounting for 31% and 51%,respectively; ②Mugwort pollen season was from 8th August to 8th October;③The daily peak concentration of Mugwort pollen was 267 g/m~3,with an average of 71 g/m~3,the daily peak concentration of Humulus pollen was 672 g/m~3,with an average of 124 g/m3;④88.5% out-patients suffering from hay fever or asthma during Autumn were allergic to mugwort, 28.2% allergic to Humulus;⑤the grading of airborne Mugwort pollen concentration: 0～14 g/m~3 as grade 0, 15～40 g/m~3 as grade Ⅰ, 41～116 g/m~3 as grade Ⅱ,more than 117 g/m~3 as grade Ⅲ.Conclusion:It was the first time that Burkard volumetric sampler was employed in monitoring Mugwort and Humulus concentration in Beijing city. Average concentration of mugwort pollen was about 100 g/m~3, and concentration grade Ⅲ of mugwort pollen was distributed during the last ten days of August and the beginning of September.

Aerobiological Study of Pollen and Mold in the 10 States of Korea / 소아알레르기및호흡기학회지

PURPOSE: As outdoor allergen, pollen and mold are increasely drawing attention all over the country in Korea. The peninsula is located in a temperate zone and has four distinct seasons. In this study, we described the seasonal variation of the pollen and mold distributions in Korea, which may be used to evaluate the pollenosis prevalence for the first time. METHODS: Rotorod samplers were installed on the 10 stations at each state in Korea. Outdoor allergens were collected daily in each station from July 1, 1997 to June 30, 1999. After staining they were identified, counted and recorded with the weather in each state. RESULTS: The pollens were found in the beginning of February through the middle of December. The earliest pollen was found from Pusan which is a south region, and followed by Chonju, Daegu which are midsouth. The peak season for pollen was from the end of April to the middle of May(major pollen: Tree, Grasses), the second peak was depicted from the end of August to the middle of September (major pollen : sagebrush, ragweed) the outdoor molds were largely collected from the July to the middle of October. Cladosporium and Alternaria were prevalent all year round and Ascospores of Leptospheria was peak in monsoon season. CONCLUSION: The pollens were found during the whole year except from middle of the December through the middle of the January. Molds were found all year round.

Aerobiological Study for Airborne Pollen and Mold in Pusan / 소아알레르기및호흡기학회지

PURPOSE: Airborne pollen and mold spores are common causative agents of allergic disease. Atmospheric pollen and spores in one area of Pusan were collected to investigate species, particle amount, seasonal distribution, and of its association with reactivity to skin prick test in children. METHODS: Rotorod sampler was installed on the rooftop of St. Benedict Hospital in Pusan. 24 hour sampling of airborne allergens over a two year period was conducted 6 days/week from July 1, 1997 to June 30, 1999. Those samples were stained with Calberla's fuchsin and were identified, counted under the light microscope (400xfor pollen, 1000xfor mold). The data were compared with the daily weather report and allergy skin test. RESULTS: Major pollens collected were Pinus, Alnus, Juniperus, Betula, Quercus, Artemisia, Ambrosia, and Chenospodium-Amaranthus. The pollen season is relatively short and the pollen dispersed mainly during the period from March to May in case of tree pollen and from August to October in case of grass pollen. Total pollen count ranged from 0 to 1000 grains/m3/day (May 14, 99). The peak pollen season was seen during Spring and Autumn, especially in March and September. Major mold spores counted were Cladosporium, Leptospheria and Alternaria. Mold spore count ranged from 0 to 2,360 spores/m3/day (Oct. 8, 98). Cladosporium was dispersed year-round, but mainly in the October and November, while Leptospheria was dispersed mainly in the period from July to September and Alternaria counts tended to be higher around July. The concentration of mold is roughly correlated with the amount of rainfall, having high spore count in July and August, especially in case of Leptospheria. In terms of positive reaction to skin prick test in children, Alnus and Artemisia were found to be allergen source in early spring and late summer season, respectively. CONCLUSION: Analysis of pollens and mold spores sampled in the atmosphere of Pusan, Korea, for a 2 year period identified 19 species of pollens and 22 species of mold spores with seasonal variation of some clinically important pollen/mold load. Cladosporium, Leptospheria and Alternaria are found to be three major molds, especially from June to October.

Aerobiological Study for Airborne Plooern and Mold in Kuri-shi, Kyunggi-Do / 소아알레르기및호흡기학회지

In a large number of a1lergic cases, inhalant allergens, particularly airborne pollens and mo1ds am important causative, triggering agents in respiratory, even in skinanergy. It is essential for diagnosis and treatment of airborne allergy to survey the airborne pollen and mo1d in the patient's living area. Rotorod samp1er was installed on the well-ventilated rooftop of Hanyang Kuri Hospital in Kuri-shi, Kyunggi-do as the vicinity of Seoul. Airborne allergens were collected from October 1, 1995 to September 30, 1996 daily and were stained with Calberla`s fuchsin and were identified, counted under the light microscope (400Xfor pollen, 1000Xfor mold). The data were compared with the local daily weather report. The airborne pollen was found from 12th February to 22nd December. The maximal period for pollen collection was 7th-25th May (Maximal count:492 grains/ August. There were Alnus, Betula, Pinus, Quercus, Acer, Ulmus, PopuluS, Cupressaceae, Ginkgo, Corylus, Salk in the tree season from middle of February to middle of July. The grass season ranged from middle of March to end of November. There were Artemisia, Ambrosia, HumuluS, Chenopodium-Amaranthus, rumex, Plantago, Trifoium, Humulus, Chrysanthemum, Cyperus in the weed season ranged from middle of July to end of December. Airborne molds were collected all through the year except JanuaIgamma but, counted maximally from the middle of June to end l August. There were CladosPorium, Alternaria, ascospore of Leptospheria, Periconia, Myxomycete, Drechs1era, Rust urediniospores, Basidiospore, ToruIa, Xylariaceae, IOidimn, Nigrospom, Stempi1y1ium, Amphispheda, Fusarium, Aspergil1us. In Korea, there are great number of the allergic patients, but we have had a little records and data about study of relationship between the allergic diseases and airborne environmental allergens. we will reported those results completely in future.

Survey of the Airborne Pollens in Seoul, Korea

A daily count of air borne pollen was done within the city limits of Seoul, Korea for a period of two years (1984-1985) using Durham's Gravity Sampling Device. Two major pollen seasons, March through May, and the month of September, were easily distinguishable. The concentration of the different types of pollen as well as all of the pollens combined varied similarly both years to a significant degree. The pollen types found in the greatest numbers were Alnus (March), Populus (April), Quercus (April-May), Pinus(May), grasses (September), and weeds (September). The main weed pollens detected in September, sagebrush, ragweed and Japanese hop would also be considered to be important allergenic pollens of respiratory allergy in Korea. The results of the survey are discussed in the light of especially relevant published literature.