Influence of climate factors on pediatric alopecia areata flares in Philadelphia, Pennsylvania

AbstractPatients with alopecia areata (AA) may experience episodic disease flares characterized by increasing hair loss that follow a seasonal pattern. However, no studies have examined whether specific climate factors contribute to the seasonal pattern of AA flares. Using Spearman rank correlation analyses, we assessed the association between climate variables and AA flare frequency per month in 336 children with AA in Philadelphia, Pennsylvania. Region-specific monthly values for average ambient temperature, air pressure, cloudiness, hours of sunlight, relative humidity, number of days with sun, number of days with rain, volume of precipitation, wind gust, wind speed, and UV index from January 2015 to December 2017 were obtained from World Weather Online. We found significant (P < 0.05) correlations between AA flare frequency and UV index (R = − 0.66), precipitation (R = − 0.66), number of days with rain (R = − 0.70), number of days with sun (R = 0.62), and air pressure (R = 0.80). Stratified analyses showed even stronger associations with UV index and precipitation in patients with an atopic comorbidity. New significant correlations appeared with temperature, wind speed, and UV index of the prior month. However, in patients who did not have atopic comorbidities, we generally observed weaker and non-significant correlations between climate and AA flare frequency. This study suggests that certain climate factors may mediate the seasonal pattern of AA flares and may contribute to AA pathogenesis. Atopic AA patients may be more susceptible to the influence of climate compared to those with no history of atopy.

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Identification allergen Cladosporium spores concentration in the ambient of Ahvaz wastewater treatment plant and their relationship with meteorological variables, Ahvaz, Iran

Journal of Air Pollution and Health ◽

10.18502/japh.v4i4.2199 ◽

2020 ◽

Author(s):

Nastaran Talepour ◽

Mohammad Sadegh Hassanvand ◽

Effat Abbasi-Montazeri ◽

Seyed Mahmoud Latifi ◽

Neamat Jaafarzadeh Haghighi Fard

Keyword(s):

Wastewater Treatment ◽

Wind Speed ◽

Meteorological Parameters ◽

Treatment Plant ◽

Allergic Diseases ◽

Airborne Fungi ◽

Air Pressure ◽

Dew Point ◽

Uv Index ◽

Ultraviolet Index

Introduction: Airborne Cladosporium spores in different regions of the world are known as the main cause of allergic diseases. This study aimed to identify the Cladosporium species airborne fungi in Ahvaz wastewater treat- ment plant area and its adjacent places and check the effect of some meteoro- logical parameters on their emissions. Materials and methods: Cladosporium spores were cultured on Sabouraud`s dextrose agar (SDA) medium in both cold and warm seasons. The passive sampling method was performed and after incubation, colonies were counted as CFU/Plate/h. Then, according to the macroscopic and microscopic charac- teristics of the genus, the fungal was studied. The meteorological parameters including temperature, humidity, air pressure, dew point, wind speed, and ultraviolet index were measured. Results: At least, 3358 colonies were counted. 1433 colonies were related to the Cladosporium species. The amount of Cladosporium in indoor air was 46% of the total Cladosporium. The average of meteorological parameters includes temperature, humidity, air pressure, dew point, wind speed and UV index during the study were 27.8 °C, 32.9%, 548.7 °Kpa, 3.6°, 9.1 km / h and 3.9 respectively. 42.6% of the total number of colonies was related to the Cladosporium species. Cladospiromes had a direct correlation with the dew point, temperature, humidity, air pressure, wind speed, and ultraviolet index (Pvalue<0.05). Primary sludge dewatering has the greatest role in the Cladospo- rium spores emission. Conclusion: Considering the importance of Cladosporium spores in the ap- pearance of allergic diseases, and given that wastewater treatment workers spend most of their time outside, observing health and preventive measures is necessary in this regard.

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Faculty Opinions recommendation of History of atopy or autoimmunity increases risk of alopecia areata.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1165468.628842 ◽

2009 ◽

Author(s):

Bryan Anderson

Keyword(s):

Alopecia Areata ◽

History Of

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Exacerbation of alopecia areata: A possible complication of sodium tetradecyl sulphate foam sclerotherapy treatment for varicose veins

SAGE Open Medical Case Reports ◽

10.1177/2050313x17712643 ◽

2017 ◽

Vol 5 ◽

pp. 2050313X1771264 ◽

Cited By ~ 1

Author(s):

Mark S Whiteley ◽

Victoria C Smith

Keyword(s):

Alopecia Areata ◽

Varicose Veins ◽

Clinical Score ◽

Severe Exacerbation ◽

Hormonal Changes ◽

Foam Sclerotherapy ◽

Endovenous Laser Ablation ◽

Pelvic Vein ◽

History Of ◽

Sodium Tetradecyl Sulphate

A 40-year-old woman with a history of alopecia areata related to stress or hormonal changes was treated for bilateral primary symptomatic varicose veins (CEAP clinical score C2S) of pelvic origin, using a staged procedure. Her first procedure entailed pelvic vein embolisation of three pelvic veins using 14 coils and including foam sclerotherapy of the tributaries, using 3% sodium tetradecyl sulphate. Following this procedure, she had an exacerbation of alopecia areata with some moderate shedding of hair. Subsequently, she underwent endovenous laser ablation under local anaesthetic without incident. Seven months after the pelvic vein embolisation, she underwent foam sclerotherapy of leg and labial varicose veins using sodium tetradecyl sulphate. Two days following this procedure, she had a severe exacerbation of alopecia areata with gross shedding of hair. These two episodes of exacerbation of alopecia areata appear to be associated with sodium tetradecyl sulphate foam sclerotherapy of veins.

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Population dynamics of Stenothoe valida Dana, 1852 (Amphipoda, Stenothoidae) at Cheongsapo beach of Busan, Republic of Korea

Crustaceana ◽

10.1163/15685403-bja10105 ◽

2021 ◽

Vol 94 (4) ◽

pp. 413-429

Author(s):

Ye Ji Lee ◽

Won Gyu Park

Keyword(s):

Population Dynamics ◽

Life History ◽

Sex Ratio ◽

Brood Size ◽

Ovigerous Female ◽

Seasonal Pattern ◽

Recruitment Rate ◽

Republic Of Korea ◽

Female Size ◽

History Of

Abstract The population dynamics of Stenothoe valida Dana, 1852 were studied at Cheongsapo beach of Busan, Republic of Korea, from March 2019 to March 2020. Sampling was conducted once a month at low tide during spring tides. Specimens were grouped by the cephalic length at 0.025 mm intervals, and classified into four categories: females, ovigerous females, males and juveniles. The sex ratio, defined as females : total males + females, exceeded 0.5 during most of the study period. Brood size was significantly coupled with ovigerous female size. Two to four cohorts appeared at each study period. New cohorts occurred at almost every sampling except in the samples Jun-2, and Nov-2. Life span was estimated at 1-2 months. The juvenile ratio, the ratio of ovigerous females, and the recruitment rate estimated by FiSAT were commonly high in summer and winter. The life history of S. valida was not coupled with water temperature, but had a strong seasonal pattern.

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The XWS open access catalogue of extreme European windstorms from 1979 to 2012

Natural Hazards and Earth System Science ◽

10.5194/nhess-14-2487-2014 ◽

2014 ◽

Vol 14 (9) ◽

pp. 2487-2501 ◽

Cited By ~ 59

Author(s):

J. F. Roberts ◽

A. J. Champion ◽

L. C. Dawkins ◽

K. I. Hodges ◽

L. C. Shaffrey ◽

...

Keyword(s):

Wind Speed ◽

Grid Point ◽

Storm Track ◽

Wind Gust ◽

Pressure Gradients ◽

Valuable Resource ◽

Model Bias ◽

Severe Storms ◽

High Loss ◽

Catastrophe Models

Abstract. The XWS (eXtreme WindStorms) catalogue consists of storm tracks and model-generated maximum 3 s wind-gust footprints for 50 of the most extreme winter windstorms to hit Europe in the period 1979–2012. The catalogue is intended to be a valuable resource for both academia and industries such as (re)insurance, for example allowing users to characterise extreme European storms, and validate climate and catastrophe models. Several storm severity indices were investigated to find which could best represent a list of known high-loss (severe) storms. The best-performing index was Sft, which is a combination of storm area calculated from the storm footprint and maximum 925 hPa wind speed from the storm track. All the listed severe storms are included in the catalogue, and the remaining ones were selected using Sft. A comparison of the model footprint to station observations revealed that storms were generally well represented, although for some storms the highest gusts were underestimated. Possible reasons for this underestimation include the model failing to simulate strong enough pressure gradients and not representing convective gusts. A new recalibration method was developed to estimate the true distribution of gusts at each grid point and correct for this underestimation. The recalibration model allows for storm-to-storm variation which is essential given that different storms have different degrees of model bias. The catalogue is available at http://www.europeanwindstorms.org .

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Pampean lizard assemblage from subtropical Brazil: a temporal analysis

Anais da Academia Brasileira de Ciências ◽

10.1590/s0001-37652011000400021 ◽

2011 ◽

Vol 83 (4) ◽

pp. 1345-1358 ◽

Cited By ~ 2

Author(s):

Gisele R. Winck ◽

Tiago G. Dos Santos ◽

Sonia Z. Cechin

Keyword(s):

Environmental Changes ◽

Seasonal Pattern ◽

Natural Populations ◽

Temporal Analysis ◽

Natural Environments ◽

Human Occupation ◽

Environmental Disturbances ◽

Pampa Biome ◽

History Of ◽

Recruitment Period

The increasing human occupation of natural environments is one of the greatest threats to biodiversity. To mitigate the negative anthropogenic effects, it is necessary to understand the characteristics of natural populations and the natural history of species. A study was conducted with an assemblage of lizards from a disturbed area of the Pampa biome, from February 2001 to January 2004. The assemblage showed a unimodal seasonal pattern, with the recruitment period occurring during the warmer months. The captures were seasonal for two of the three monitored years, and concentrated within warmer months. The minimum temperature explained the number of catches for the assemblage as a whole. However, when the species were analyzed individually, the temperature only explained the seasonal occurrence of Teius oculatus. The abundance of species was significantly different in the third year of study for Cercosaura schreibersii and Ophiodes striatus. This latter species was no longer registered in the study area from May 2003 until the end of the study. Therefore, O. striatus may be more sensitive to environmental changes, considering the events of change in vegetation during the study. With frequent and increasing environmental disturbances, it is necessary to take conservation measures and encourage the increase of knowledge on Pampean lizards.

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Clinical trends of scalp alopecia areata: a tertiary care hospital based observational study

International Journal of Research in Dermatology ◽

10.18203/issn.2455-4529.intjresdermatol20200607 ◽

2020 ◽

Vol 6 (2) ◽

pp. 193

Author(s):

Pallavi Singh ◽

Milind A. Patvekar ◽

Bhavika Shah ◽

Alisha Mittal ◽

Asmita Kapoor

Keyword(s):

Family History ◽

Observational Study ◽

Alopecia Areata ◽

Tertiary Care Hospital ◽

Past History ◽

Tertiary Care ◽

Disease Onset ◽

Epidemiological Data ◽

Care Hospital ◽

History Of

Background: Alopecia areata is one of the commonest types of non-scarring alopecia involving the scalp and/or body. As there is paucity of recent epidemiological data from our country, this study was conducted to determine the latest clinical and epidemiological trends of scalp alopecia areata.Methods: A hospital-based observational study consisting of 100 cases of clinically diagnosed scalp alopecia areata who reported to the Dermatology OPD, Dr. D.Y. Patil Medical College, Pune, was conducted for a period of six months. Socio-demographic and clinical information was collected and clinical examination was performed on all patients. The data was evaluated using appropriate statistical methods.Results: Out of the 100 cases enrolled, males (64%) outnumbered females (36%). The commonest presenting age group was 21-30 years (44%). Disease onset was sudden in 80% patients and 59% cases had a progressive disease course. Majority (75%) had a disease duration of less than 3 months. Majority cases were asymptomatic (80%) with no precipitating factors (90%). Past history and family history of alopecia areata were present in 13% and 9% cases, respectively. Personal and family history of associated diseases were present in 27% and 22% patients, respectively. Most patients had single (61%), patchy (83%) lesions with occiput (45%) being the commonest initial site. Nail changes were present in 22% cases, of which pitting (13%) was the commonest nail finding.Conclusions: This study reflects the clinical profile of scalp alopecia areata in a tertiary care hospital.

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SEASONAL AND INTERANNUAL PATTERN OF METEOROLOGICAL VARIABLES IN CUIABÁ, MATO GROSSO STATE, BRAZIL

Brazilian Journal of Geophysics ◽

10.22564/rbgf.v33i3.949 ◽

2015 ◽

Vol 33 (3) ◽

pp. 477 ◽

Cited By ~ 2

Author(s):

Nadja Gomes Machado ◽

Marcelo Sacardi Biudes ◽

Carlos Alexandre Santos Querino ◽

Victor Hugo De Morais Danelichen ◽

Maísa Caldas Souza Velasque

Keyword(s):

Wind Speed ◽

Relative Humidity ◽

Meteorological Data ◽

Seasonal Pattern ◽

Global Radiation ◽

Meteorological Variables ◽

Maximum Temperature ◽

Wet Season ◽

Agricultural Producers ◽

Mato Grosso

ABSTRACT. Cuiab´a is located on the border of the Pantanal and Cerrado, in Mato Grosso State, which is recognized as one of the biggest agricultural producers of Brazil. The use of natural resources in a sustainable manner requires knowledge of the regional meteorological variables. Thus, the objective of this study was to characterize the seasonal and interannual pattern of meteorological variables in Cuiab´a. The meteorological data from 1961 to 2011 were provided by the Instituto Nacional de Meteorologia (INMET – National Institute of Meteorology). The results have shown interannual and seasonal variations of precipitation, solar radiation, air temperature and relative humidity, and wind speed and direction, establishing two main distinct seasons (rainy and dry). On average, 89% of the rainfall occurred in the wet season. The annual average values of daily global radiation, mean, minimum and maximum temperature and relative humidity were 15.6 MJ m–2 y–1, 27.9◦C, 23.0◦C, 30.0◦C and 71.6%, respectively. Themaximum temperature and the wind speed had no seasonal pattern. The wind speed average decreased in the NWdirectionand increased in the S direction.Keywords: meteorological variables, climatology, ENSO. RESUMO. Cuiabá está localizado na fronteira do Pantanal com o Cerrado, no Mato Grosso, que é reconhecido como um dos maiores produtores agrícolas do Brasil. A utilização dos recursos naturais de forma sustentável requer o conhecimento das variáveis meteorológicas em escala regional. Assim, o objetivo deste estudo foi caracterizar o padrão sazonal e interanual das variáveis meteorológicas em Cuiabá. Os dados meteorológicos de 1961 a 2011 foram fornecidos pelo Instituto Nacional de Meteorologia (INMET). Os resultados mostraram variações interanuais e sazonais de precipitação, radiação solar, temperatura e umidade relativa do ar e velocidade e direção do vento, estabelecendo duas principais estações distintas (chuvosa e seca). Em média, 89% da precipitação ocorreu na estação chuvosa. Os valores médios anuais de radiação diária global, temperatura do ar média, mínima e máxima e umidade relativa do ar foram 15,6 MJ m–2 y–1, 27,9◦C, 23,0◦C, 30,0◦C e 71,6%, respectivamente. A temperatura máxima e a velocidade do vento não tiveram padrão sazonal. A velocidade média do vento diminuiu na direção NW e aumentou na direção S.Palavras-chave: variáveis meteorológicas, climatologia, ENOS.

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