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Js Pasricha - One of the best experts on this subject based on the ideXlab platform.
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Air-borne contact dermatitis caused exclusively by Xanthium strumarium.
Indian Journal of Dermatology Venereology and Leprology, 1995Co-Authors: Js Pasricha, Kaushal K. Verma, Pascal D'souzaAbstract:Most cases having air-borne contact dermatitis (ABCD) in India are considered to be caused by Parthenium hysterophorus. In some cases however, other plants have also been noticed to give positive patch test reactions. We are reporting two cases presenting as ABCD who showed positive patch tests with Xanthium strumarium while the patch tests with Parthenium hysterophorus were negative. It is therefore necessary to realise that every case of ABCD is not caused by Parthenium, and patch testing with Parthenium alone can lead to serious mistakes.
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A high rate of cross‐sensitivity between Parthenium hysterophorus and Xanthium strumarium in Indian patients with contact dermatitis
Journal of The European Academy of Dermatology and Venereology, 1994Co-Authors: Js PasrichaAbstract:Parthenium hysterophorus is well known to produce contact dermatitis in India. Xanthium strumarium is another weed also belonging to the Compositae family present in India since much earlier times, but not recognised among the plants causing contact dermatitis. We have found a very high rate of cross-sensitivity between the two plants in patients presenting air-borne contact dermatitis. Of the 28 patients with air-borne contact dermatitis. 22 revealed positive patch tests with aqueous extracts of both plants, one patient showed a negative patch test with Parthenium hysterophorus and a positive test with Xanthium strumarium, while five patients were negative with both plants. In a control group of 15 patients with contact dermatitis due to other agents, only one patient showed a positive patch test with Xanthium strumarium, while the patch test with Parthenium hysterophorus was negative. Patch tests performed with serial 10-fold dilutions of standard extracts of both plants to determine the degree (titre) of contact hypersensitivity (TCH) revealed variable litres in different patients. Some patients had a much higher titre with Parthenium hysterophorus while others had a higher titre with Xanthium strumarium. The antigen in Xanthium strumarium, like that of Parthenium hysterophorus, could be extracted with water, acetone, ethanol, chloroform, benzene, ether and carbon tetrachloride. Infra-red spectrophotometry of extracts in ether revealed similar spectra in the two plants. The antigens in the two plants seem lo be very similar.
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a high rate of cross sensitivity between parthenium hysterophorus and Xanthium strumarium in indian patients with contact dermatitis
Journal of The European Academy of Dermatology and Venereology, 1994Co-Authors: Js PasrichaAbstract:Parthenium hysterophorus is well known to produce contact dermatitis in India. Xanthium strumarium is another weed also belonging to the Compositae family present in India since much earlier times, but not recognised among the plants causing contact dermatitis. We have found a very high rate of cross-sensitivity between the two plants in patients presenting air-borne contact dermatitis. Of the 28 patients with air-borne contact dermatitis. 22 revealed positive patch tests with aqueous extracts of both plants, one patient showed a negative patch test with Parthenium hysterophorus and a positive test with Xanthium strumarium, while five patients were negative with both plants. In a control group of 15 patients with contact dermatitis due to other agents, only one patient showed a positive patch test with Xanthium strumarium, while the patch test with Parthenium hysterophorus was negative. Patch tests performed with serial 10-fold dilutions of standard extracts of both plants to determine the degree (titre) of contact hypersensitivity (TCH) revealed variable litres in different patients. Some patients had a much higher titre with Parthenium hysterophorus while others had a higher titre with Xanthium strumarium. The antigen in Xanthium strumarium, like that of Parthenium hysterophorus, could be extracted with water, acetone, ethanol, chloroform, benzene, ether and carbon tetrachloride. Infra-red spectrophotometry of extracts in ether revealed similar spectra in the two plants. The antigens in the two plants seem lo be very similar.
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Air-borne contact dermatitis due to Chrysanthemum with true cross sensitivity to Parthenium hysterophorus and Xanthium strumarium
Indian Journal of Dermatology Venereology and Leprology, 1992Co-Authors: Js Pasricha, Th. NandakishoreAbstract:A 60-year old man living in Srinagar (Jammu and Kashmir) had air-borne contact dermatitis for last 10 years. He had never traveled to any other part of the country where Parthenium hysterophorus or Xanthium strumarium are prevalent but he used to cultivate chrysanthemums. Patch tests with standardized extracts of various plants revealed the strongest reaction with Chrysanthemum, while the reactions with Xanthium strumarium and Parthenium hysterophorus were also positive but milder. This seems to be a case of primary sensitivity to Chrysanthemum with cross sensitivity to Xanthium strumarium and Parthenium hysterophorus.
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Contact dermatitis due to Xanthium strumarium
Indian Journal of Dermatology Venereology and Leprology, 1990Co-Authors: Js Pasricha, P Bhaumik, Anil AgarwalAbstract:A 50-year-old mining engineer at Dhanbad was having air bome contact Dermatitis suspected to be caused by Xanthium strumarium. Patch tests with a 15% aqueous extract of air dried leaves showed a severe positive reaction, but the patient also had positive patch tests with Parthenium hysterphorus and a few other weeds and trees known to cause air-borne contact dermatitis. The titre of contact hypersensitivity with the extract of Xanthium struma'rium was more than 1:100,000 and for Parthenium hysterophrous it was 1:10 indicating a high degree of hypersensitivity to Xanthium strumarium. Further tests in 14 other patients revealed a high prevalence of cross sensitivity between these two plants both of which belong to the compositae family.
Hanchen Zheng - One of the best experts on this subject based on the ideXlab platform.
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new thiazinediones and other components from Xanthium strumarium
Chemistry of Natural Compounds, 2006Co-Authors: Huiliang Li, Qiaoyan Zhang, Hanchen ZhengAbstract:Two new thiazinediones along with five known compounds were isolated from the fruits of Xanthium strumarium L. The structures of the two new compounds were determined to be 7-hydroxymethyl-8,8-dimethyl-4,8-dihydrobenzol[1,4]thiazine-3,5-dione-11-O-β-D-glucopyranoside (1) and 2-hydroxy-7-hydroxymethyl-8,8-dimethyl-4,8-dihydrobenzol[1,4]thiazine-3,5-dione-11-O-β-D-glucopyranoside (2). The five known compounds were identified as xanthiazone (3), chlorogenic acid (4), ferulic acid (5), formononetin (6), and ononin (7), respectively.
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a new thiazinedione from Xanthium strumarium
Fitoterapia, 2006Co-Authors: Huiliang Li, Qiaoyan Zhang, Hanchen ZhengAbstract:A new thiazinedione was isolated from the fruit of Xanthium strumarium. Its structure was elucidated by a combination of spectral methods.
S.r. Sharma - One of the best experts on this subject based on the ideXlab platform.
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Anthelmintic activity of Xanthium strumarium against haemonchus contortus infection in sheep
Indian Journal of Animal Sciences, 2020Co-Authors: S.r. Sharma, D. Singh, F.a. Khan, C.p. Swarankar, P.s.k. BhagwanAbstract:Anthelmintic activity of the fresh juice of Xanthium strumarium leaves at different concentrations was evaluated in vitro, against benzimidazole resistant Haemonchus contortus strain, using egg hatch assay (EHA) and larval paralysis test (LPT). No anthelmintic activity of the Xanthium strumarium juice was observed at 1: 100 dilution, however, undiluted juice of the leaves showed a 100% inhibition in egg hatching by EHA. The inhibition in egg hatching was 100% at 1 : 2 and 1: 10 dilutions of the juice, whereas at 1: 50 dilution, it was only 21.5%, after 48 hr of incubation. The control mortality was 12.1%. In LPT, the percentage paralysis of the larvae at concentrations - undiluted, 1: 2, 1: 5, 1: 10 and 1: 100 were 23.8%. 25.5%, 21.5%, 17.7% and 5.44%, respectively, indicating significant (P
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in vitro and in vivo antitrypanosomal activity of Xanthium strumarium leaves
Journal of Ethnopharmacology, 1995Co-Authors: T S Talakal, S K Dwivedi, S.r. SharmaAbstract:Antitrypanosomal activity of crude 50% ethanolic extract of Xanthium strumarium leaves was studied in vitro and in vivo. The extract exhibited trypanocidal activity at all the four concentrations tested i.e. 5, 50, 500 and 1000 μg/ml, in vitro. In vivo trial revealed that the extract exerted antitrypanosomal effect at dosage of 100, 300 and 1000 mg/kg, intraperitoneally. At 100 and 300 mg/kg doses the survival period of the Trypanosoma evansi infected mice was significantly prolonged. However, the extract was found to be toxic to the animals at 1000 mg/kg dose.
Kuldip Singh Dhindsa - One of the best experts on this subject based on the ideXlab platform.
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xanthanolides from Xanthium strumarium
Phytochemistry, 1992Co-Authors: Mangel S Malik, N K Sangwan, Kuldip Singh DhindsaAbstract:Abstract An extract of aerial parts of Xanthium strumarium afforded one new sesquiterpene lactone, 2-hydroxytomentosin- 1β,5β-epoxide, in addition to many known ones.
Huiliang Li - One of the best experts on this subject based on the ideXlab platform.
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new thiazinediones and other components from Xanthium strumarium
Chemistry of Natural Compounds, 2006Co-Authors: Huiliang Li, Qiaoyan Zhang, Hanchen ZhengAbstract:Two new thiazinediones along with five known compounds were isolated from the fruits of Xanthium strumarium L. The structures of the two new compounds were determined to be 7-hydroxymethyl-8,8-dimethyl-4,8-dihydrobenzol[1,4]thiazine-3,5-dione-11-O-β-D-glucopyranoside (1) and 2-hydroxy-7-hydroxymethyl-8,8-dimethyl-4,8-dihydrobenzol[1,4]thiazine-3,5-dione-11-O-β-D-glucopyranoside (2). The five known compounds were identified as xanthiazone (3), chlorogenic acid (4), ferulic acid (5), formononetin (6), and ononin (7), respectively.
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a new thiazinedione from Xanthium strumarium
Fitoterapia, 2006Co-Authors: Huiliang Li, Qiaoyan Zhang, Hanchen ZhengAbstract:A new thiazinedione was isolated from the fruit of Xanthium strumarium. Its structure was elucidated by a combination of spectral methods.