scholarly journals Prevalence of Microsporum canis from Pet Cats in Small Animal Hospitals, Chiang Mai, Thailand

2022 ◽  
Vol 9 (1) ◽  
pp. 21
Author(s):  
Vena Chupia ◽  
Jirapat Ninsuwon ◽  
Kakanang Piyarungsri ◽  
Chollada Sodarat ◽  
Worapat Prachasilchai ◽  
...  
Keyword(s):  
Small Animal ◽  
Skin Lesions ◽  
Molecular Techniques ◽  
The Body ◽  
Microsporum Canis ◽  
Chiang Mai ◽  
Important Species ◽  
Fungal Identification ◽  
Hair Samples ◽  
Polymerase Chain

Dermatophytosis is a disease caused by dermatophytes, a group of fungi that can cause disease both in humans and animals. The important genera that are pathogenic in animals include Trichophyton and Microsporum. Microsporum canis is an important species because it can cause zoonosis and is commonly found in domestic animals. Cats, which live very close to humans, may expose humans to this pathogen. This research focused on the epidemiology of M. canis found in cats. Hair samples were collected via the Mackenzie technique from cats with and without skin lesions, preliminarily examined with 10% KOH preparation, and cultured for fungal identification. Samples were confirmed with molecular techniques including polymerase chain reaction, gel electrophoresis, and sequencing. Samples were collected from 138 cats located in 93 households, 43 from cats with skin lesions (31.16%) and 95 from cats without skin lesions (68.84%). Eighteen cats with lesions (13.04%) and ten cats without lesions (7.2%) were found to carry M. canis. In eleven of the eighteen cats both with skin lesions and positive for M. canis (61.11%), the pathogen was found both at the site of the lesion and at other sites in the body. Because the pathogen can be found in the hair of cats with and without skin lesions, owners, keepers, veterinarians, and others who come into contact with these animals are at risk of infection if they are not aware or do not take precautions after contact with them.

scholarly journals MOLECULAR TECHNIQUE FOR DERMATOPHYTE IDENTIFICATION ISOLATED FROM PETS IN JAKARTA AND BOGOR

2021 ◽  
Vol 22 (1) ◽  
pp. 56-67
Author(s):  
Dwi Endrawati ◽  
Eko Sugeng Pribadi ◽  
Agustin Indrawati ◽  
Eni Kusumaningtyas
Keyword(s):  
Fragment Length Polymorphism ◽  
Molecular Techniques ◽  
Molecular Technique ◽  
Microsporum Canis ◽  
Chain Reaction ◽  
Molecular Arrangement ◽  
Pcr Rflp ◽  
Examination Techniques ◽  
Polymerase Chain ◽  
Restriction Fragment Length

Dermatophytosis is one of the superficial mycoses which causes skin health problems in pet animals. This study conducted molecular characterization using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) on specimens obtained from patients suspected of dermatophytosis in several clinics in DKI Jakarta Province and Bogor City. Fifty samples of skin scrapings from patients suspected of clinically dermatophytosis were collected and analyzed by conventional and molecular techniques. The Research aimed to identify dermatophyte that were isolated from pet animals using PCR-RFLP technique. The primers of ITS 1, ITS 4, Chytin Synthase, and cutting enzymes of Dde1 were used in this Research. Four specimens off 50 spesimens were tested positive using direct and culture PCR examination techniques. Based on the sequencing results, Microsporum canis was identified in four spesimens. Specimens that were positive for dermatophytes followed by RFLP using the Dde 1 enzyme. The results of the study showed that molecular techniques were a reliable way to determine the high-precision dermatophytes in diagnosing dermatophytosis. The Results also showed that molecular arrangement of B1 isolate was different from three other isolates.

Microsporum canis. [Descriptions of Fungi and Bacteria].

1965 ◽  
Author(s):  
P. M. Stockdale
Keyword(s):  
Geographical Distribution ◽  
Tinea Capitis ◽  
Skin Lesions ◽  
The Body ◽  
Microsporum Canis ◽  
Seasonal Incidence ◽  
Tinea Unguium ◽  
The Face ◽  
Infection Disease ◽  
Bright Green

Abstract A description is provided for Microsporum canis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Primarily a pathogen of the cat and dog, frequently transmitted to man. Also recorded from the chimpanzee, chinchilla, fox, lion, monkey, pig, rabbit, sheep and tiger. Experimental animals are susceptible to infection. DISEASE: Ringworm (dermatophytosis, tinea). Infected hairs and animal claws usually fluoresce bright green under Wood's light and hairs are surrounded by ectothrix sheaths of small spores in a mosaic arrangement. In cats the lesions are usually inconspicuous. They may occur on any part of the body, but particularly the face and paws, and the whiskers and claws may be involved. In dogs infection is more noticeable, and is characterized by small circular areas of scaling and alopecia, sometimes with oedema and crust formation, on any part of the body. The claws may also be infected. Infections in dogs have a well defined seasonal incidence with a peak in Oct. -Feb., but the incidence in cats is poorly defined (Kaplan & Ivens, Sabouraudia 1: 91-102, 1961). In man the scalp (tinea capitis), glabrous skin (tinea corporis), and rarely the beard (tinea barbae), foot (tinea pedis) and nails (tinea unguium, onychomycosis) may be infected (mycoses). Children are most susceptible, particularly to scalp infection which is very rare in adults. Scalp lesions are scaling, inflammatory areas containing broken hairs or with total hair loss. Pustulation and kerion formation are not uncommon. Skin lesions are circinate, with a scaling centre and vesicular border. Kligman (RMVM 1, 2510; 2, 2484) studied the pathogenesis of tinea capitis caused by M. canis. GEOGRAPHICAL DISTRIBUTION: Africa (Algeria, Angola, Cape Verde Islands, Egypt, French W. Africa, Sahara, Tunisia, Union of S. Africa); Asia (Ceylon, India, Philippines, Turkey); Australasia & Oceania (Australia (N.S.W.), New Zealand); Europe, North America, Central America and West Indies (Costa Rica, Cuba, Guatemala, Mexico, Panama, Puerto Rico); South America (Argentina, Brazil (south of Pernambuco), Chile, Colombia, Ecuador, Peru, Uruguay, Venezuela).

scholarly journals Dermatophytes in Cats without Dermatopathies in the Metropolitan Area of Florianópolis, Brazil

2017 ◽  
Vol 45 (1) ◽  
pp. 7
Author(s):  
Cibele Floriano Fraga ◽  
Andréia Spanamberg ◽  
Laerte Ferreiro ◽  
Gisele Alabora da Silva ◽  
Natália Tomazi Francheschi ◽  
...  
Keyword(s):  
Metropolitan Area ◽  
False Negative ◽  
Clinical Signs ◽  
Fungal Growth ◽  
Animal Husbandry ◽  
The Body ◽  
Microsporum Canis ◽  
Saprotrophic Fungi ◽  
Sabouraud Agar ◽  
Hair Samples

Background: Dermatophytes are infectious agents responsible for dermatophytosis, an important worldwide zoonosis. Cats are considered potential hosts and reservoir of these fungi, especially Microsporum canis. The prevalence in cats without dermatopathies varies according to the region, climate and animal husbandry. The aim of this study was to estimate the frequency of dermatophytes in cats without clinical signs of dermatopathy in the Metropolitan Area of Florianópolis, situated in the coast of Southern Brazil.Materials, Methods & Results: A total of 198 samples were obtained from cats without dermatopathies domiciled in the metropolitan area of Florianópolis. The collections were made through vigorous hair brushing throughout the body of the animal, using a sterile toothbrush. Mycological culture was performed onto Sabouraud Agar Chloramphenicol-Cyclohexamide (SCC), and incubated at 25-27°C for 21-28 days. The diagnosis was based on the macro and micromorphological characteristics of the isolated dermatophyte. One hundred and ten samples (55.6%) were collected in veterinary clinics and 88 (44.4%) in multiple household cats (average 11). The frequency of dermatophytes corresponded to 3.0% (6/198). Only the genus Microsporum was observed with predominance of M. canis (66.7%), followed by M. gypseum (33.3%). Saprotrophic fungi were observed in 94.4% of the cultures and 5.6% of the samples did not occurred fungal growth. Most of the isolates were obtained from adult cats (66.7%), females (83.3%) and with long hair (5.4%) in comparison to short hair samples (2.1%). Thirty percent of the cats (59/198) had been tested for retroviruses, and, among them, 27.0% were positive (22% FeLV and 5% FIV). M. gypseum was isolated from one feline FeLV positive. Various saprotrophic species were isolated from multiple household cats.Discussion: Dermatophytosis is considered as the most common occupational zoonosis among veterinarians, and it is recognized as a biological risk associated to the direct contact with cats. There are reports of regional outbreaks in Brazil where the pets were indicated as sources of dermatophytes to humans in the domestic environment. The frequency of dermatophytes observed in this study (3.0%) was lower than shown in others papers. Microsporum canis is commonly isolated from cats in hot weather regions and crowded living facilities; once introduced in to the creation on a cattery it is difficult to be eliminated. There is evidence of a higher occurrence of M. canis in cats FIV positive than seronegative ones. Dermatophytes were isolated from cats in contact with other cats (5/165). However, multiple household cats had no positive cultures and this outcome can be associated to high contamination by saprotrophic fungi. For diagnosis of dermatophytosis, mycological culture is indicated as the most efficient and easy to perform method, but it is necessary to be aware of false negative results, since it can occur in situations of intense contamination. Thus, it is advisable to prophylactically perform a clinical examination as a routine and also laboratory analyses in each cat before introducing it to a new environment.

scholarly journals Survey of Dermatophytes in Stray Cats with and without Skin Lesions in Northern Italy

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Daniela Proverbio ◽  
Roberta Perego ◽  
Eva Spada ◽  
Giada Bagnagatti de Giorgi ◽  
Alessandra Della Pepa ◽  
...  
Keyword(s):  
Urban Areas ◽  
Skin Lesions ◽  
Northern Italy ◽  
Microsporum Canis ◽  
Fungal Culture ◽  
Sample Collection ◽  
Rural And Urban Areas ◽  
Stray Cats ◽  
Rural And Urban ◽  
Hair Samples

The aim of this study was to determine the prevalence of dermatophytes in stray cats with and without clinical lesions from different colonies in rural and urban areas of Milan and surroundings in northern Italy. Stray cats (273) were caught during a trap-neuter-release (TNR) program conducted in different colonies of northern Italy in both rural and urban areas. Each cat was examined in dark environment with a Wood’s lamp prior to sample collection. Hair or scales exhibiting typical fluorescence were removed with a pair of sterile hemostats and cultured. The hair of all cats was then sampled by Mackenzie modified brush technique regardless of the presence or absence of skin lesions attributable to dermatophytosis. All the hair samples were subjected to fungal culture. 15 cats were positive (5.5%).Microsporum caniswas the most common dermatophyte isolated (13/15). The only other isolated dermatophyte wasTrichophyton mentagrophytes(2/15). Our estimated prevalence of dermatophytes in stray cats was much lower than other Italian studies on the same population.

Gender determination of caucasoid hair using image analysis

1993 ◽  
Vol 51 ◽  
pp. 216-217
Author(s):  
T.B. Ball ◽  
W.M. Hess
Keyword(s):  
Image Analysis ◽  
Cross Sections ◽  
Scalp Hair ◽  
The Body ◽  
Equivalent Diameter ◽  
Cross Sectional ◽  
Hair Samples ◽  
Length Width ◽  
Morphological Differences

It has been demonstrated that cross sections of bundles of hair can be effectively studied using image analysis. These studies can help to elucidate morphological differences of hair from one region of the body to another. The purpose of the present investigation was to use image analysis to determine whether morphological differences could be demonstrated between male and female human Caucasian terminal scalp hair.Hair samples were taken from the back of the head from 18 caucasoid males and 13 caucasoid females (Figs. 1-2). Bundles of 50 hairs were processed for cross-sectional examination and then analyzed using Prism Image Analysis software on a Macintosh llci computer. Twenty morphological parameters of size and shape were evaluated for each hair cross-section. The size parameters evaluated were area, convex area, perimeter, convex perimeter, length, breadth, fiber length, width, equivalent diameter, and inscribed radius. The shape parameters considered were formfactor, roundness, convexity, solidity, compactness, aspect ratio, elongation, curl, and fractal dimension.

Rapid evaluation method for propofol abusing with hair by using centrifugal filter and liquid chromatography-tandem mass spectrometry

2020 ◽  
Vol 16 ◽  
Author(s):  
Jaesung Pyo
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Matrix Effect ◽  
Hair Sample ◽  
Extraction Procedure ◽  
The Body ◽  
Tandem Mass ◽  
Centrifugal Filter ◽  
Hair Samples

Background: Since propofol is rapidly metabolized and excreted from the body, it is not easy to quantify its intake in blood or urine sample over the time. In this case, the hair sample would be more advantageous to estimate during the abuse period. However, presence of protein and lipid in the hair sample could interfere extraction and be problematic during mass spectrometric analysis. Objective: The aim of this study is to develop the simple and less-time consuming method for extraction of propofol glucuronide by removing hair interferences with centrifugal filter. Method: Hair samples were washed and dissolved with sodiumhydroxide solution. This dissolved hair solution was applied to centrifugal filter and centrifuged. The filtrate was extracted with ethyl acetate and evaporated to dryness. The residue was reconstituted with methanol and analyzed by liquid chromatography coupled with tandem mass spectrometry. This developed analytical method was validated by testing of linearity, selectivity, accuracy, precision, recovery, matrix effect and stability of propofol glucuronide. Results and Discussion: The validation results showed good linearity over the concentration range of 0.5~500 pg/mg, with correlation coefficient of 0.9991. The LOD and LLOQ was 0.2 and 0.5 pg/mg, respectively. The intra-and inter-day precision and accuracy were acceptable within 14.5% for precision and 10.1% for accuracy. Similarly, the developed method revealed high sample recovery (>88%), low hair matrix effect (<10%) and highly-efficient extraction procedure. Conclusion: This well validated procedure was successfully applied to determine propofol glucuronide in rat hair sample and can be applicable, with high potential, in the field of forensic toxicology especially with increasing abuse and accidental overdose of propofol.

Investigation of ACE rs4646994, MTHFR rs1801133 and VDR rs2228570 Genotypes in Jordanian Patients with Fibromyalgia Syndrome

2020 ◽  
Vol 21 ◽  
Author(s):  
Raida Khalil ◽  
Wajdy J. Al-Awaida ◽  
Hamzeh J. Al-Ameer ◽  
Yazun Jarrar ◽  
Amer Imraish ◽  
...  
Keyword(s):  
Sleep Disturbances ◽  
Fibromyalgia Syndrome ◽  
Methylenetetrahydrofolate Reductase ◽  
Pain Tolerance ◽  
The Body ◽  
Restless Leg Syndrome ◽  
Jordanian Arabic ◽  
Clinical Investigations ◽  
Polymerase Chain ◽  
Larger Sample

Background: Fibromyalgia syndrome (FMS) is a chronic disease characterized by widespread body pain, weakness in certain parts of the body (critical points), low pain tolerance, sleep disturbances, and fatigue. This syndrome is considered rare in Jordan. Objectives: The research aimed to find out the association of the angiotensin converting enzyme, methylenetetrahydrofolate reductase, and vitamin D receptor (ACE, MHFTR, and VDR, respectively) genotypes with FMS among Jordanian patients. Methods: This work included 22 FM patients and 22 healthy individuals of Jordanian Arabic origin. The ACE rs4646994, MTHFR rs1801133, and VDR rs2228570 genotypes were determined using polymerase chain reaction (PCR) followed by restriction fragment length polymorphism. Results: No associations between ACE rs4646994, MTHFR rs1801133, and VDR rs2228570 with the vulnerability of a person for the development of FMS were found. However, we found an association between the ACE rs4646994 genotype and restless leg among FM patients. Conclusion: Based on result from this study, it appears that the ACE rs4646994 genotype is associated with restless leg among FMS patients of Jordanian origin. Further clinical investigations with larger sample sizes are required to confirm these findings and to understand the molecular mechanism of ACE rs4646994 genetic variant in the restless leg syndrome among FM patients.

scholarly journals Assessment of the Nutraceutical Effects of Oleuropein and the Cytotoxic Effects of Adriamycin, When Administered Alone and in Combination, in MG-63 Human Osteosarcoma Cells

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 354
Author(s):  
Katerina Gioti ◽  
Anastasia Papachristodoulou ◽  
Dimitra Benaki ◽  
Nektarios Aligiannis ◽  
Alexios-Leandros Skaltsounis ◽  
...  
Keyword(s):  
Chemotherapeutic Agent ◽  
Molecular Techniques ◽  
Osteosarcoma Cells ◽  
Elisa Method ◽  
Chain Reaction ◽  
Cytotoxic Effects ◽  
Human Osteosarcoma ◽  
Human Osteosarcoma Cells ◽  
Anti Cancer ◽  
Polymerase Chain

Oleuropein (OLEU) is the most distinguished phenolic compound found in olive fruit and the leaves of Olea europaea L., with several pharmacological properties, including anti-cancer actions. Adriamycin (ADR) is an anthracycline widely used as a chemotherapeutic agent, although it presents significant side effects. The aim of the present study was to investigate the effect of oleuropein alone (20 μg/mL) and in co-treatment with ADR (50 nM), in MG-63 human osteosarcoma cells. Therefore, cellular and molecular techniques, such as MTT assay, flow cytometry, real-time Polymerase Chain Reaction (PCR), western blot and Elisa method, as well as Nuclear Magnetic Resonance (NMR) spectroscopy, were applied to unveil changes in the signal transduction pathways involved in osteosarcoma cells survival. The observed alterations in gene, protein and metabolite levels denote that OLEU not only inhibits MG-63 cells proliferation and potentiates ADR’s cytotoxicity, but also exerts its action, at least in part, through the induction of autophagy.

scholarly journals Complicated cutaneous leishmaniasis caused by an imported case of Leishmania tropica in Japan: a case report

2021 ◽  
Vol 49 (1) ◽  
Author(s):  
Hiroyuki Kitano ◽  
Chizu Sanjoba ◽  
Yasuyuki Goto ◽  
Kazumasa Iwamoto ◽  
Hiroki Kitagawa ◽  
...  
Keyword(s):  
Cutaneous Leishmaniasis ◽  
Skin Lesions ◽  
Leishmania Tropica ◽  
Case Presentation ◽  
Imported Case ◽  
Imported Cases ◽  
History Of ◽  
Hematoxylin And Eosin ◽  
Polymerase Chain ◽  
Positive Results

Abstract Background Leishmaniasis is not endemic in Japan, and imported cases are rare. However, there are increasing concerns regarding imported cases of cutaneous leishmaniasis from endemic countries to Japan. This report describes a case of imported cutaneous leishmaniasis that was diagnosed and treated in Japan. Case presentation A 53-year-old Pakistani man presented with skin lesions on both malleoli of his right ankle and the dorsum of the left foot. The skin lesions manifested as erythematous nodules surrounding an ulcer in the center of the lesion. The lesions of the malleoli of his right ankle each measured 3 × 3 cm, and the lesion on the top of his left foot measured 5 × 4 cm. He had been living and working in Japan but had a history of a visit to Pakistan for about 2 months in 2018. The skin lesions were biopsied. Giemsa and hematoxylin and eosin staining of biopsy samples showed amastigotes of Leishmania in macrophages, and the presence of Leishmania was confirmed by skin tissue culture. Polymerase chain reaction using biopsy specimens identified Leishmania parasites, and DNA sequence analysis revealed that the species was Leishmania tropica. The patient was treated with intravenous liposomal amphotericin B for 6 days. The erythema disappeared, and the erythematous nodules resolved within 3 weeks. Conclusion This is the first report of imported cutaneous leishmaniasis caused by L. tropica from Pakistan, and it is interesting that all three testing modalities showed positive results in this case.

Diagnostic Accuracy of a Direct Panfungal Polymerase Chain Reaction Assay Performed on Stained Cytology Slides

2021 ◽  
pp. 030098582199156
Author(s):  
Alexandra N. Myers ◽  
Unity Jeffery ◽  
Zachary G. Seyler ◽  
Sara D. Lawhon ◽  
Aline Rodrigues Hoffmann
Keyword(s):  
Polymerase Chain Reaction ◽  
Diagnostic Accuracy ◽  
Molecular Techniques ◽  
Fungal Culture ◽  
Chain Reaction ◽  
Identification Of Fungi ◽  
Fungal Dna ◽  
Polymerase Chain ◽  
Panfungal Pcr ◽  
Pcr Targeting

Molecular techniques are increasingly being applied to stained cytology slides for the diagnosis of neoplastic and infectious diseases. Such techniques for the identification of fungi from stained cytology slides have not yet been evaluated. This study aimed to assess the diagnostic accuracy of direct (without nucleic acid isolation) panfungal polymerase chain reaction (PCR) followed by sequencing for identification of fungi and oomycetes on stained cytology slides from dogs, cats, horses, and other species. Thirty-six cases were identified with cytologically identifiable fungi/oomycetes and concurrent identification via fungal culture or immunoassay. Twenty-nine controls were identified with no cytologically or histologically visible organisms and a concurrent negative fungal culture. Direct PCR targeting the internal transcribed spacer region followed by sequencing was performed on one cytology slide from each case and control, and the sensitivity and specificity of the assay were calculated. The sensitivity of the panfungal PCR assay performed on stained cytology slides was 67% overall, 73% excluding cases with oomycetes, and 86% when considering only slides with abundant fungi. The specificity was 62%, which was attributed to amplification of fungal DNA from control slides with no visible fungus and negative culture results. Direct panfungal PCR is capable of providing genus- or species-level identification of fungi from stained cytology slides. Given the potential of panfungal PCR to amplify contaminant fungal DNA, this assay should be performed on slides with visible fungi and interpreted in conjunction with morphologic assessment by a clinical pathologist.

Sign in / Sign up

Export Citation Format

Share Document