8 results on '"Al Yasiri MH"'
Search Results
2. Environmental distribution of Cryptococcus neoformans and C. gattii around the Mediterranean basin
- Author
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Cogliati M, D'Amicis R, Zani A, Montagna MT, Caggiano G, De Giglio O, Balbino S, De Donno A, Serio F, Susever S, Ergin C, Velegraki A, Ellabib MS, Nardoni S, Macci C, Oliveri S, Trovato L, Dipineto L, Rickerts V, McCormick-Smith I, Akcaglar S, Tore O, Mlinaric-Missoni E, Bertout S, Mallié M, Martins MD, Vencà AC, Vieira ML, Sampaio AC, Pereira C, Criseo G, Romeo O, Ranque S, Al-Yasiri MH, Kaya M, Cerikcioglu N, Marchese A, Vezzulli L, Ilkit M, Desnos-Ollivier M, Pasquale V, Korem M, and Polacheck I
- Subjects
Cryptococcus gattii/classification/genetics/*isolation & purification ,Cryptococcus neoformans/classification/genetics/*isolation & purification ,Environmental Microbiology ,Genotype ,Mediterranean Region ,Molecular Typing ,Mycological Typing Techniques ,Trees/*microbiology - Abstract
In order to elucidate the distribution of Cryptococcus neoformans and C. gattii in the Mediterranean basin, an extensive environmental survey was carried out during 2012-2015. A total of 302 sites located in 12 countries were sampled, 6436 samples from 3765 trees were collected and 5% of trees were found to be colonized by cryptococcal yeasts. Cryptococcus neoformans was isolated from 177 trees and C. gattii from 13. Cryptococcus neoformans colonized 27% of Ceratonia, 10% of Olea, Platanus and Prunus trees and a lower percentage of other tree genera. The 13 C. gattii isolates were collected from five Eucalyptus, four Ceratonia, two Pinus and two Olea trees. Cryptococcus neoformans was distributed all around the Mediterranean basin, whereas C. gattii was isolated in Greece, Southern Italy and Spain, in agreement with previous findings from both clinical and environmental sources. Among C. neoformans isolates, VNI was the prevalent molecular type but VNII, VNIV and VNIII hybrid strains were also isolated. With the exception of a single VGIV isolate, all C. gattii isolates were VGI. The results confirmed the presence of both Cryptococcus species in the Mediterranean environment, and showed that both carob and olive trees represent an important niche for these yeasts.
- Published
- 2016
3. MOLECULAR DETECTION OF THE TWO VIRULENCE GENES HWP1 AND ALS1 IN CANDIDA SPECIES ISOLATED FROM ONYCHOMYCOSIS.
- Author
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Al-Khairallah HA and Al-Yasiri MH
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- Candida albicans genetics, Candida glabrata, Humans, Virulence genetics, Candida genetics, Onychomycosis
- Abstract
Objective: The aim: This article was aimed to assess the prevalence of Candida species causing nail infections and to investigate the most important virulence genes that cause adhesion., Patients and Methods: Materials and methods: Samples were collected from General Hospital and the outpatient's clinics in Thi-Qar Province, southern Iraq, during the period from January 2021 to May 2021. Samples were inoculated on Sabouraud Dextrose Agar plates containing 0.5 mg chloramphenicol, then Petri dishes were incubated at 30°C under aerobic conditions and observed for Candida species growth for 24-72 hrs. All isolates were identified by morphologic and chromatic properties on CHROMagar and by Api Candida., Results: Results: Twenty five isolates were obtained from hundred samples, which belong to five species of the genus Candida, distributed in percentage 9(36%), 4(16%), 4(16%), 4(16%) and 3(12%) of C. glabrata, C. krusei, C. albicans, C. famata and C. tropicalis consecutively and one isolate was not identified. Monoplex PCR technique was used to detect virulence genes (hwp1 and als1) of Candida species. Four Candida albicans isolates (16%) were carried of both hwp1 and als1 genes., Conclusion: Conclusions: The virulence gene (hwp1) can be relied upon in molecular detection as a special diagnostic tool of Candida albicans species except other types causing Candidal onychomycosis.
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- 2022
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4. Microbiome Dysbiosis and Predominant Bacterial Species as Human Cancer Biomarkers.
- Author
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Shirazi MSR, Al-Alo KZK, Al-Yasiri MH, Lateef ZM, and Ghasemian A
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- Bacteria genetics, Bacteria immunology, Bacteria pathogenicity, Cell Cycle, Dysbiosis genetics, Dysbiosis immunology, Dysbiosis microbiology, Epigenesis, Genetic, Gene Expression Regulation, Neoplastic, Humans, Immune Evasion, Neoplasms genetics, Neoplasms immunology, Neoplasms microbiology, Bacteria isolation & purification, Dysbiosis complications, Host Microbial Interactions, Microbiota, Neoplasms diagnosis
- Abstract
Purpose: To evaluate bacterial agents as cancer biomarkers., Methods and Results: Various bacterial species have been demonstrated to involve in human cancers. However, the data is not enough for better understanding of predominant specific species. Application of a rapid and early-diagnostic, cost-effective, non-invasive, and inclusive method is a crucial approach for obtaining valid results. The role of Helicobacter pylori (H. pylori) in gastric and duodenal cancer has been confirmed. From investigation among previous publications, we attempted to make it clear which bacterial species significantly and specifically increase in various cancer types. It was unraveled that there is significant change in Granulicatella adiacens (G. adiacens) in lung cancer (LC), Fusobacterium nucleatum (F. nucleatum) in colorectal cancer (CRC), H. pylori and Porphyromonas gingivalis (P. gingivalis) in pancreatic cancer, and Streptococcus spp. in oral cancer., Conclusion: Alteration in the cell cycle by means of different mechanisms such as inflammation, alteration in cell signaling, invasion and immune evasion, specific niche colonization, induction of DNA damage and mutation, expression of some microRNAs, and enhancing epigenetic effects are the most common mechanisms employed by bacterial species.
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- 2020
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5. Anthropogenic impact on environmental filamentous fungi communities along the Mediterranean littoral.
- Author
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Al-Yasiri MH, Normand AC, Mauffrey JF, and Ranque S
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- Animals, Charadriiformes, Cities, Feces microbiology, France, Fungi chemistry, Human Activities, Mediterranean Region, Microbiological Techniques, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Biota, Environmental Microbiology, Fungi classification, Fungi isolation & purification
- Abstract
We hypothesised that anthropogenic influences impact the filamentous fungi community structure and that particular species or species patterns might serve as markers to characterise ecosystems. This study aimed to describe the filamentous fungi community structure in various biotopes along the Mediterranean shore that were exposed to various levels of anthropogenic influence. We sampled filamentous fungi from yellow-legged gull faecal samples at five study sites along the Mediterranean littoral in southern France. The sites were characterised by variable anthropogenic influence, ranging from building rooftops in two cities to a natural reserve. The sites also included two suburban ecoclines, one of which was exposed to sewer pollution. Filamentous fungal colonies were quantified and identified via MALDI-TOF mass spectrometry. Interestingly, we found that both fungal diversity and abundance were low in urban areas compared with suburban ecocline or environments little affected by anthropogenic influence. Furthermore, some fungal species were clearly associated with particular environments. In particular, Mucor circinelloides was associated with a natural environment with little anthropogenic impact and distant from human settlements. Whereas, Scedosporium apiospermum was associated with an ecocline polluted by sewage. Our findings indicate that particular fungal species or species combination might be used as surrogate markers of ecosystems exposed to anthropogenic pollution., (© 2017 Blackwell Verlag GmbH.)
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- 2017
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6. Gut yeast communities in Larus michahellis from various breeding colonies.
- Author
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Al-Yasiri MH, Normand AC, Piarroux R, Ranque S, and Mauffrey JF
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- Animals, Feces microbiology, France, Charadriiformes microbiology, Gastrointestinal Microbiome, Gastrointestinal Tract microbiology, Yeasts classification, Yeasts isolation & purification
- Abstract
Yellow-legged gulls have been reported to carry antibiotic-resistant Enterobacteriaceae; however, the gut mycobiota of these birds has not yet been described. In this study, we analyzed the gut yeast communities in five yellow-legged gull breeding colonies along the Mediterranean littoral in southern France. Gull fecal samples were inoculated onto four types of culture media, including one supplemented with itraconazole. Yeast species richness, abundance, and diversity were estimated, and factorial analysis was used to highlight correspondences between breeding colonies. Yeast grew in 113 of 177 cultures, and 17 distinct yeast species were identified. The most frequent species were Candida krusei (53.5%), Galactomyces geotrichum (44.1%), C. glabrata (40.9%), C. albicans (20.5%), and Saccharomyces cerevisiae (18.1%). Gut yeast community structure in the gulls at both Pierre-Blanche Lagoon (PB) and Frioul Archipelago (F) were characterized by greater species richness and diversity than in those at the two cities of La Grande-Motte (GM) and Palavas-les-Flots (PF) as well as Riou Archipelago (R). Gulls in these latter three sites probably share a similar type of anthropogenic diet. Notably, the proportion of anthropic yeast species, including C. albicans and C. glabrata, in the gull mycobiota increased with gull colony synanthropy. Antifungal resistance was found in each of the five most frequent yeast species. We found that the gut yeast communities of these yellow-legged gulls include antifungal-resistant human pathogens. Further studies should assess the public health impact of these common synanthropic seabirds, which represent a reservoir and disseminator of drug-resistant human pathogenic yeast into the environment., (© The Author 2016. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2017
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7. Opportunistic fungal pathogen Candida glabrata circulates between humans and yellow-legged gulls.
- Author
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Al-Yasiri MH, Normand AC, L'Ollivier C, Lachaud L, Bourgeois N, Rebaudet S, Piarroux R, Mauffrey JF, and Ranque S
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- Animals, Antifungal Agents pharmacology, Bird Diseases pathology, Bird Diseases transmission, Candida glabrata drug effects, Candida glabrata isolation & purification, Candidiasis pathology, Candidiasis transmission, Cluster Analysis, Drug Resistance, Fungal drug effects, Feces microbiology, Fluconazole pharmacology, Genotype, Humans, Microsatellite Repeats genetics, Bird Diseases microbiology, Candida glabrata genetics, Candidiasis microbiology, Charadriiformes microbiology
- Abstract
The opportunistic pathogenic yeast Candida glabrata is a component of the mycobiota of both humans and yellow-legged gulls that is prone to develop fluconazole resistance. Whether gulls are a reservoir of the yeast and facilitate the dissemination of human C. glabrata strains remains an open question. In this study, MLVA genotyping highlighted the lack of genetic structure of 190 C. glabrata strains isolated from either patients in three hospitals or fecal samples collected from gull breeding colonies located in five distinct areas along the French Mediterranean littoral. Fluconazole-resistant isolates were evenly distributed between both gull and human populations. These findings demonstrate that gulls are a reservoir of this species and facilitate the diffusion of C. glabrata and indirect transmission to human or animal hosts via environmental contamination. This eco-epidemiological view, which can be applied to other vertebrate host species, broadens our perspective regarding the reservoirs and dissemination patterns of antifungal-resistant human pathogenic yeast.
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- 2016
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8. Distribution of Keratinophilic Fungi in Soil Across Tunisia: A Descriptive Study and Review of the Literature.
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Anane S, Al-Yasiri MH, Normand AC, and Ranque S
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- Fungi genetics, Fungi physiology, Microbiological Techniques, Molecular Diagnostic Techniques, Prospective Studies, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Tunisia, Biodiversity, Fungi isolation & purification, Fungi metabolism, Keratins metabolism, Soil Microbiology
- Abstract
Data on the frequency and distribution of keratinophilic fungi in soil of Tunisia are scanty. The present survey aimed to describe the distribution of keratinophilic fungi in soils collected in Tunisia. Keratinophilic fungi were isolated using Vanbreuseghem's hair-baiting technique from 354 soil samples collected in 15 governorates of Tunisia and identified according to their morphology with further DNA and MALDI-TOF analysis when necessary. Keratinophilic fungi were isolated from 46.3 % of the samples from 14 governorates. Chrysosporium keratinophilum was the predominant species (30.5 %) followed by Microsporum gypseum (27.4 %). Other isolated species included C. tropicum (14.0 %), C. indicum (11.0 %), Chaetomium sp. (4.9 %), Arthroderma curreyi, Arthroderma cuniculi (3.7 % each), C. merdarium (3.1 %), Anixiopsis stercoraria, C. parvum, Paecilomyces lilacinus, Auxarthron zuffianum (2.4 % each), Fusarium oxysporum, Aphanoascus verrucosus, Gymnascella dankaliensis (1.2 % each) and 12 other species (0.6 % each). Two to five distinct fungal species were associated with 11.5 % of the positive samples. Keratinophilic fungi were more frequently isolated in rural (54.8 %) than in urban (41.1 %) areas (p = 0.012). The highest (100 %) positive culture rate was noted in soil collected in stables. Keratinophilic fungi are frequent throughout Tunisian territory, particularly in soils with a high organic matter content that should be regarded as humans and animals mycoses reservoir.
- Published
- 2015
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