Dermatophyte and non dermatophyte fungi in Riyadh City, Saudi Arabia

Khaled, Jamal M.; Golah, Hammed A; Khalel, Abdulla S.; Alharbi, Naiyf S.; Mothana, Ramzi A.

doi:10.1016/j.sjbs.2014.12.006

Cited by 35 publications

(48 citation statements)

References 30 publications

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“…albicans as a major isolate accounting 5/13(38.4%) of the total yeast isolated and this study was similar with study conducted in Saudi Arabia [33]. Non dermatophyte fungi were isolated as a cause of dermatophytosis in many studies [9,13,33,34].…”

Section: Discussionsupporting

confidence: 88%

Epidemiology of Dermatophytes and Non Dermatophyte Molds among Patients Attending Rank Higher Specialized Dermatology Clinic, Addis Ababa, Ethiopia

Araya

Tesfaye

Fente

2019

Preprint

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Background Dermatophytes are keratinophilic fungi that infect keratinized tissuescausing diseases known as dermatophytosis. Dermatophytosis is common worldwide and continues to increase. Objective This study was undertaken to determine the prevalence of dermatophytes and the spectrum of fungal agents in patients attending Rank higher clinic. Methods a cross sectional study has been conducted, in which 318 Samples from 318 suspected patient was collected from hair, nail and skin. A portion of each sample was examined microscopically and the remaining portion of each sample was cultured onto plates of Sabouraud’s dextrose agar containing chloramphenicol with and without cycloheximide. Dermatophyte isolates were identified by studying macroscopic and microscopic characteristics of their colonies. Result Of 318 samples, fungi were detected in 133 (54.4%) by direct wet mount while 148/315(46.5%) of them were culture positive. From these 72/148(46.8%) were dermatophytes. Among dermatophyte isolates T. tonsurans 29/72(40.2%) was the most common cause of infection. Tinea capitis was the predominant clinical manifestation accounting for 170/315(53.4%) of the cases. Patients with age group 1-14 years were more affected.T. tonsurans was the most common pathogen in tinea capitis, whereas T. mentagrophytes was the most common pathogen in tinea corporis. Conclusion In this study the prevalence of dermatophytes were higher in tinea capitis 46/72(63.8%) and T.tonsurans29/72(40%) was the dominant isolated dermatophyte. Recovery of large number of dermatophytes and non-dermatophyte fungi in our study showed that Non-dermatophyte fungi are emerging as important causes of dermatophytosis warranting further intensive epidemiological studies which have public health significance are needed.

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Section: Discussionsupporting

confidence: 88%

Epidemiology of Dermatophytes and Non Dermatophyte Molds among Patients Attending Rank Higher Specialized Dermatology Clinic, Addis Ababa, Ethiopia

Araya

Tesfaye

Fente

2019

Preprint

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“…It was noticed that T. corporis constituted the highest prevalence (40%) followed by T. pedis (18%) then T. capitis and T. cruris (16 and 8%, respectively). these results disagreed with Khaled et al, (2015) who examined 112 patients and found that the T. capitis infection had the highest prevalence among the patients (22.3%) while T. barbae had the lowest. The frequency of isolation of dermatophytes from clinically suspected human patients was recorded in Table (10) and revealed that T. verrucosum was the highest isolated dermatophyte (28%) followed by E. flocosum and M. canis (16 and 14%, respectively) and lastly T. mentagrophytes and T. violoaceum (12% of each).…”

Section: Discussioncontrasting

confidence: 83%

“…The frequency of isolation of dermatophytes from clinically suspected human patients was recorded in Table (10) and revealed that T. verrucosum was the highest isolated dermatophyte (28%) followed by E. flocosum and M. canis (16 and 14%, respectively) and lastly T. mentagrophytes and T. violoaceum (12% of each). This result was found coincided with Khaled et al, (2015) who observed that the identified dermatophyte isolates were belonged to nine species as T. violaceum, T. verrucosum, T. rubrum, T. mentagrophytes, T. schoenleinii, T. concentricum, M. canis, M. audouinii and E. floccosum while it disagreed with Bhatia and Sharma, (2014) who noticed that T. mentegrophyte was the predominant spp.…”

Section: Discussionsupporting

confidence: 73%

Prevalence of Dermatophytosis in some animals and Human in Behera Province, Egypt

Haggag¹,

Samaha²,

Nossair³

et al. 2017

AJVS

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Key words:Dermatophytosis, Farm animals, Human, Isolation A total of 150 hair and skin scraping samples were collected from clinically suspected ring worm lesions found on different parts of the body of individually owned animals including; cattle (50), buffaloes (25), sheep (50) and horses (25) of different ages and sex from Abo El Matameer District, Behera Province during the period extended from June 2014 to May 2015 to be investigated for presence of dermatophytes. In addition, 50 samples of hair and skin scrapings were collected from human patients clinically diagnosed as having Tinea of various ages and sex whom their history revealed that there was an animal contact with the examined species. Samples were transported under possible aseptic condition with the minimum of delay to the laboratory of the Department of Animal Hygiene and Zoonoses, Faculty of Veterinary Medicine, Alexandria University where they were subjected to mycological examination. The obtained results revealed that the overall prevalence of dermatophytosis in different animal species was 74 % and the highest prevalence was observed in examined samples of sheep (78%) followed by buffaloes (76%) then cattle and horses (72 and 68%, respectively). Also, it was observed that the prevalence of dermatophytosis was higher in females than in males in examined samples of cattle, buffaloes and sheep while in examined samples of horses, it was noticed that males was higher than females. Also, it was found that the prevalence of dermatophytosis was higher in examined samples of the age group (˂ 2 years) than in the age group (2-˃ 2 years). The frequency of isolation of dermatophytes from examined animal species clarified that T. verrucosum was isolated with the highest frequency (47.33%) followed by T. mentagrophytes (14%) and they were isolated from all animal species under investigation then T. equinum (7.34%) that was isolated from examined samples of horses only and finally M. canis (5.33%) that was isolated from examined samples of cattle and sheep only. The overall prevalence of dermatophytosis in examined samples of the clinically suspected human patients was 82% and males' prevalence (52%) was higher than females (30%). In addition, the highest prevalence was observed in the age group (15-˂ 30 years) followed by the age group (˂ 15 years) and finally the age group (˃ 30 years). Moreover, It was noticed that T. corporis constituted the highest prevalence (40%) followed by T. pedis (18%) then T. capitis and T. cruris (16 and 8%, respectively).

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“…In a study of human pathogenic dermatophytes, Khaled et al (2015) reported that the correlation between the type of tinea and dermatophyte species was dependent on the type of keratin. They found that Microsporum canis prefers keratin in the scalp and skin, whereas Epidermophyton floccosum prefers keratin in dead tissues (groin, feet and nails).…”

Section: Incorrect Diagnosis and Differentiation Of Dermatophytesmentioning

confidence: 99%

Major challenges and perspectives in the diagnostics and treatment of dermatophyte infections

2020

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Dermatophytes are the aetiological factors of a majority of superficial fungal infections. What distinguishes them from other pathogenic filamentous fungi is their unique ability to degrade keratin. The remarkable ability of this group of fungi to survive in different ecosystems results from their morphological and ecological diversity as well as high adaptability to changing environmental conditions. Paradoxically, despite the progress in medicine, the prevalence of dermatophyte infections is increasing from year to year. At the beginning of the third millennium, practical diagnostic and therapeutic options are still very limited. This review focuses on understanding the major problems in this aspect of dermatophyte infections and indicates future strategies and perspectives for novel approaches to identification and drugs for elimination of dermatophytes. Particular importance is placed on development of a strategy for a diagnostic pathway and implementation of rapid and reliable diagnostics methods designed by international teams. Furthermore, among compounds that currently arouse great interest, representatives of terpenoids, alkaloids, saponins, flavonoids and essential oils deserve attention. Many of these compounds are undergoing clinical trials as potential antifungal agents, and future research should focus on attempts at determination of the applicability of tested substances. Finally, the advantages and disadvantages in implementation of new diagnostic paths and medicinal substances for routine use are indicated. Journal of Applied Microbiology

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Dermatophyte and non dermatophyte fungi in Riyadh City, Saudi Arabia

Abstract: The results concluded that approximately M. canis caused a quarter of dermatophyte cases, tinea capitis infection was prevalent and the molecular method was more accurate than conventional methods.

Cited by 35 publications

References 30 publications

Epidemiology of Dermatophytes and Non Dermatophyte Molds among Patients Attending Rank Higher Specialized Dermatology Clinic, Addis Ababa, Ethiopia

Epidemiology of Dermatophytes and Non Dermatophyte Molds among Patients Attending Rank Higher Specialized Dermatology Clinic, Addis Ababa, Ethiopia

Prevalence of Dermatophytosis in some animals and Human in Behera Province, Egypt

Major challenges and perspectives in the diagnostics and treatment of dermatophyte infections

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