555 results match your criteria: "Favus"

Unraveling another of the 'Big Five': new species and records of Cerithiopsidae from Brazil (Caenogastropoda: Triphoroidea).

Zootaxa

August 2024

Departamento de Zoologia; Instituto de Biociências; Universidade Federal do Estado do Rio de Janeiro; Av. Pasteur; 458; 22290-240; Urca; Rio de Janeiro; Brazil.

Despite being one of the most speciose marine mollusc families in the world, knowledge about the richness and distribution of Cerithiopsidae in Brazil is very limited. The present study aims to revise the occurrence of species of this family from Brazil, based on the examination of specimens in malacological collections obtained through several expeditions and surveys in the last years. All previous literature records of species from Brazil were checked, and the occurrence of Cerithiopsis gemmulosa, Cerithiopsis lata, Cerithiopsis io, Cerithiopsis fusiformis, Cerithiopsis capixaba, Cerithiopsis balaustium, Cerithiopsis aimen, Cerithiopsis prieguei, Cerithiopsis flava and Seila adamsii are confirmed; for these species, new information is presented regarding their distribution and shell morphology.

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NEW NON-MARINE OSTRACOD GENERA AND SPECIES OF APTIAN AGE FROM ARARIPE BASIN, NORTHEAST BRAZIL.

Zootaxa

August 2024

Laboratório de Micropaleontologia Aplicada (LMA/LAGESE); Instituto de Pesquisa em Petróleo e Energia (LITPEG); Universidade Federal de Pernambuco; Av. da Arquitetura; s/n; 50740-540; Recife; PE; Brazil; Programa de Pós-Graduação em Geociências; Departamento de Geologia; Centro de Tecnologia e Geociências; Universidade Federal de Pernambuco; Av. da Arquitetura; s/n; 50740-540; Recife; PE; Brazil.

The Ostracoda Subclass comprises the most expressive group of calcareous microfossils in the deposits of the Araripe Basin, especially in its post-rift sequence, which is represented by the Santana Group, of Late Aptian age (= Alagoas Local Stage). Due to the abundance, ostracod species are of great importance for understanding the evolution of the Araripe Basin, with direct application in biostratigraphic and paleoecological analyses. Improving these important applications involves refining the taxonomy of these ostracods, which also contributes to understanding the diversity of this fauna.

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Tinea favosa: psoriasiform favus in bindi area of an adult.

BMJ Case Rep

September 2024

Department of Microbiology, Su Vishwas Diagnostic Lab, Nagpur, Maharashtra, India.

Article Synopsis
  • Favus is a rare chronic scalp infection primarily affecting children, though some adult cases exist, featuring yellowish plaques and hair loss.
  • An adult patient presented with a non-scalp lesion resembling psoriasis in the forehead area, which led to a diagnostic challenge after she declined a biopsy.
  • Diagnosis was confirmed using potassium hydroxide stains, and treatment with itraconazole led to complete recovery, highlighting the importance of basic diagnostic methods in limited-resource environments.
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  • In children with long hair, scalp itching or skin lesions may hide fungal infections like tinea capitis, which can lead to serious issues if not treated in time.
  • Tinea capitis is a common fungal infection in kids, exemplified by a case of an 8-year-old with scalp lesions and hair loss, confirmed by clinical evaluation and lab tests.
  • Timely treatment with antifungal medication is essential to prevent complications such as permanent hair loss and to avoid spreading the infection to others.
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Article Synopsis
  • - Tinea capitis is a fungal infection of the scalp primarily affecting children but also seen in adults, with postmenopausal African American women at higher risk.
  • - Adults living in crowded conditions or with weakened immune systems, particularly those in households with infected children, are more prone to this condition.
  • - Diagnosis typically involves fungal cultures and trichoscopy, while treatment focuses on oral antifungals like griseofulvin and terbinafine; however, resistance to treatment is becoming a concern.
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  • - Corals are crucial to marine biodiversity, housing about 25% of all marine species, and studying their associated bacteria can aid in conservation efforts.
  • - Researchers analyzed the bacteria associated with the coral Dipsastraea favus from the Gulf of Kutch, revealing dominance of bacteria from Proteobacteria, Firmicutes, and Actinobacteria, particularly genera like Vibrio and Bacillus.
  • - The study identified 43 bacterial strains with antibiotic resistance capabilities, highlighting the potential of these microbes in developing methods for coral health and conservation.
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  • - A new genotype of the causative agent of mouse favus has emerged, showing a significant increase in itraconazole resistance and peaking in infections around 2020 in Jena, Thuringia.
  • - The strains from Thuringia differ genetically from those in the IHEM collection, particularly in the ITS region and exhibit a unique amino acid change associated with their drug resistance.
  • - The resistance traits may have developed through interspecies mating, suggested by nearly identical mating type fragments, while also demonstrating increased genetic diversity in related protein sequences.
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: Before the introduction of griseofluvin, the use of X-ray radiation was the treatment of choice for tinea capitis. More than half a century later various types of tumors have been found to be associated with childhood irradiation due to tinea capitis, most commonly cancers of the head and neck, as well as brain tumors. The often unusually aggressive and recurrent nature of these tumors necessitates the need for repeated surgeries, while the atrophic skin with an impaired vascular supply due to radiation often poses an additional challenge for defect reconstruction.

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  • A case study reports a human infection of tinea corporis caused by a dermatophyte, commonly found in rodents and camels, highlighting its ability to infect humans after the patient had contact with camels.
  • The 15-year-old girl presented with a large, pruritic, cup-shaped lesion on her wrist, which was diagnosed through skin scraping and culture, revealing the infectious organism's unique morphology.
  • Successful treatment was achieved using oral terbinafine and topical ketoconazole, but the study emphasizes that this dermatophyte is often misidentified, indicating the need for better awareness and identification methods in similar cases, especially in Iran where it was previously unreported.
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Carboxylic acid derivatives suppress the growth of through the inhibition of fungal alpha-amylase.

J Biomol Struct Dyn

April 2024

Laboratory for Computational and Structural Biology, Jubilee Centre for Medical Research, Jubilee Mission Medical College and Research Institute, Thrissur, Kerala, India.

Article Synopsis
  • The text discusses the saprophytic fungus, which affects crops like maize and produces a harmful toxin called aflatoxin through the action of an enzyme called α-amylase.
  • The study investigates the effects of specific carboxylic acid derivatives, such as cinnamic acid and others, on fungal growth and α-amylase inhibition.
  • Results show that these compounds can inhibit both fungal growth and α-amylase activity, potentially reducing aflatoxin production.
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Histopathology in the Diagnosis of Tinea Capitis: When to Do, How to Interpret?

Mycopathologia

October 2023

Department of Dermatology, Faculty of Medicine, Adana Dr. Turgut Noyan Application and Research Center, Başkent University, Adana, Turkey.

The diagnosis of tinea capitis is usually made by clinical signs and direct microscopic examination. Early diagnosis of this dermatophytic infection, which may cause permanent hair loss if not treated appropriately, is very crucial. In recent years, the use of dermoscopy has helped with early diagnosis.

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  • * Researchers extracted three known metabolites and utilized NMR to identify their structures, then loaded these compounds onto gold nanoparticles (sAuNPs) made from brown seaweed extract to improve their targeting capability.
  • * The resulting compound-AuNP conjugates demonstrated over 90% effectiveness in penetrating cancer cells (specifically MCF-7), suggesting that this method may address the challenges faced in developing new anticancer drugs.
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  • Polygoni Cuspidati Rhizoma et Radix, known as Huzhang (HZ) in Chinese, is a traditional medicinal herb used for thousands of years in Asia to treat various ailments including jaundice and constipation.
  • Despite its medicinal benefits, HZ is considered invasive in the U.S. and Europe, prompting research on its use and potential benefits.
  • HZ contains around 110 identified compounds with significant pharmacological activities, making it valuable for health products, cosmetics, and animal feed, while having low toxicity.
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Revival of generalized favus.

Int J Infect Dis

September 2022

Department of Dermatology, Hangzhou Third People's Hospital, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, West Lake Rd 38, Hangzhou, 310009, China. Electronic address:

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Transcriptomics analyses and biochemical characterization of Aspergillus flavus spores exposed to 1-nonanol.

Appl Microbiol Biotechnol

March 2022

School of Biological Engineering, Henan University of Technology, 100 Lianhua Street, Zhengzhou, 450001, People's Republic of China.

The exploitation of plant volatile organic compounds as biofumigants to control postharvest decaying of agro-products has received considerable research attention. Our previous study reported that 1-nonanol, the main constituent of cereal volatiles, can inhibit Aspergillus flavus growth and has the potential as a biofumigant to control the fungal spoilage of cereal grains. However, the antifungal mechanism of 1-nonanol against A.

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  • Avian favus is a fungal infection affecting poultry, causing significant issues in farming, with traditional antifungal treatments posing residue risks in products.
  • This study compared a 3% clove essential oil ointment to a 2% ketoconazole cream for treating chicken infections, finding that the clove ointment reduced fungal viability by 99.99% in just 1 hour.
  • Results showed both treatments had similar effectiveness, with 90% of treated chickens being culture-negative by day 35, suggesting clove essential oil could be a viable alternative for treating avian dermatophytosis.
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Article Synopsis
  • A zoophilic dermatophyte, typically known for causing rodent favus, has been associated with human infections from 2016 to 2020, particularly in the Olomouc region, which indicates a potential local outbreak.
  • Most human cases of infection were linked to contact with infected cats or dogs, highlighting the importance of direct animal-to-animal transmission.
  • Antifungal susceptibility testing revealed that terbinafine, amorolfine, ciclopirox, and efinaconazole were the most effective treatments, while fluconazole and ketoconazole showed reduced effectiveness.
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Article Synopsis
  • There has been a significant increase in Trichophyton quinckeanum infections recently, especially in 2020 when cases rose fivefold compared to 2015, often linked to rising field mouse populations.
  • Typical carriers of the infection include rodents, dogs, and cats, which are usually asymptomatic, while humans experience more inflammatory responses, showing symptoms like tinea corporis and tinea capitis.
  • Treatment for T. quinckeanum infections generally involves antifungal medications based on severity and patient factors, with terbinafine being the primary oral option for adults, while alternatives and off-label treatments may be used for children.
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  • Tinea capitis, a fungal infection of the scalp, significantly impacts over 15 million school-age children in Nigeria, primarily presenting in varied forms of hair loss and inflammation.
  • A study conducted at a dermatology clinic in Kano analyzed 112 samples from affected children using both traditional and advanced molecular techniques to identify the specific fungal species involved.
  • Results showed that the majority of cases were in boys aged 6-9, with Microsporum audouinii being the most common cause, indicating the need for improved health education and hygiene practices to reduce transmission.
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New Latrunculiidae (Demospongiae, Poecilosclerida) from the Agulhas ecoregion of temperate southern Africa.

Zootaxa

December 2020

Department of Environment, Forestry and Fisheries: Oceans and Coasts Research, Private Bag X4390, Cape Town, 8001, South Africa. Department of Biodiversity and Conservation, Faculty of Natural Sciences, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa. Department of Biological Sciences, University of Cape Town, Private Bag X3, Rondebosch, 7701, Cape Town, South Africa..

Article Synopsis
  • Sixteen species of Latrunculiidae sponges have been identified in South Africa, with new collections revealing three previously unknown species from the Tsitsikamma region and one new species from the Cyclacanthia genus.
  • The total count of Latrunculiidae species in South Africa now stands at 20, spread across four genera, following the addition of two new species discovered in Algoa Bay and Tsitsikamma National Park.
  • Despite significant morphological differences among some new and known species, analyses with spicule measurements and DNA barcoding were unable to reliably distinguish between many Tsitsikamma species, though they did reveal relationships among them within the family Latrunculiidae.
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  • Coral reefs are declining globally due to increased disturbances; while acute impacts are well-studied, chronic effects on coral populations are less understood.
  • This research focused on two key coral species in the Red Sea, examining their population dynamics from 2015 to 2018, utilizing demographic processes to model their growth rates and trajectories.
  • Despite both species having similar life-history traits, Dipsastraea favus populations are increasing and Platygyra lamellina populations are decreasing, highlighting the need for species-specific assessments to detect subtle trends in coral health before significant losses occur.*
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  • Trichophyton schoenleinii is a dermatophyte that causes tinea favosa, particularly prevalent in Africa and West Asia, but lacks a high-quality reference genome or transcriptomic profile.
  • The study aimed to understand the pathogenic mechanisms of T. schoenleinii and identify candidate pathogenic genes through comprehensive genomic and transcriptomic analyses.
  • The research yielded a draft genome with 7474 predicted genes and revealed that specific genes related to keratin breakdown and pH-responsive signaling are highly expressed, providing insights for future disease diagnosis and treatment strategies.
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Article Synopsis
  • Sponges from the Latrunculiidae family are known to produce unique bioactive compounds called pyrroloiminoquinone alkaloids, including several types like makaluvamines and discorhabdins.
  • This study utilized advanced methods to analyze chemical extracts from various species of these sponges, identifying over 200 different pyrroloiminoquinones and related compounds with distinct profiles for each species.
  • Key findings include that new species have similar but unique chemical traits compared to known ones, highlighting the diversity and potential of these compounds for further research and development.
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