ringworm

  • 文章类型: Journal Article
    介绍皮肤癣菌病是一种常见的皮肤感染,头发,和由皮肤癣菌引起的指甲,一组能够从角蛋白中消化和获取营养的丝状真菌。皮肤癣菌包括三个重要的属:表皮木素,小孢子菌,还有毛癣菌.本研究旨在使用ε-计试验(E-test)方法分析毛癣菌的抗真菌药敏模式。材料和方法这项前瞻性观察性研究是对临床可疑的皮肤癣菌病病例进行的。所有样品,包括皮肤刮屑,头发,和指甲,进行氢氧化钾(KOH)检查,然后进行真菌培养。然后使用E-test方法对两种最常用的抗真菌药:伊曲康唑和氟康唑,对念珠菌毛癣菌分离株进行抗真菌药敏试验。结果在这项研究中,皮肤癣菌病检测呈阳性的患者中有三分之一属于同一家庭,配偶是最常见的影响。体癣是最常见的临床表现,毛癣菌被确定为最常见的病因。伊曲康唑比氟康唑更有效。结论目前的研究表明,使用E-test进行皮肤癣菌的抗真菌药敏试验更容易,可以作为一种筛查方法在常规实验室中应用。作为一种替代肉汤微量稀释。
    Introduction Dermatophytosis is a common infection of the skin, hair, and nails caused by dermatophytes, a group of filamentous fungi capable of digesting and obtaining nutrients from keratin. Dermatophytes comprise three important genera: Epidermophyton, Microsporum,and Trichophyton. This study aimed to analyze the antifungal susceptibility patterns of Trichophyton mentagrophytes isolates using the epsilometer test (E-test) method. Material and methods This prospective observational study was conducted on clinically suspected cases of dermatophytosis. All samples, including skin scrapings, hair, and nails, were subjected to potassium hydroxide (KOH) examination followed by fungal culture. The Trichophyton mentagrophytes isolates were then subjected to antifungal susceptibility testing using the E-test method for the two most prescribed antifungals: itraconazole and fluconazole. Results In this study, one-third of the patients who tested positive for dermatophytosis belonged to the same family, with spouses being the most commonly affected. Tinea corporis was the most common clinical presentation, with Trichophyton mentagrophytes identified as the most common etiological agent. Itraconazole was more effective than fluconazole. Conclusion The current study demonstrated that antifungal susceptibility testing of dermatophytes using the E-test is easier and can be applied in routine laboratories as a screening method, serving as an alternative to broth microdilution.
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  • 文章类型: Editorial
    暂无摘要。
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  • 文章类型: Journal Article
    UNASSIGNED: Risk factors for the persistence of superficial skin infestations are prevalent in humid tropical environments, which are favorable for breeding of the causative vector mite Sarcoptes scabiei (ectoparasite) and dermatophyte fungi.
    UNASSIGNED: This study aimed at assessing the awareness and knowledge of childhood scabies and ringworm infestations among parents in Calabar, a highly humid rainforest tropical environment.
    UNASSIGNED: Cross-sectional study design and systematic random sampling were used to recruit school-age children in selected primary schools in Calabar.
    UNASSIGNED: Researcher-driven administration of a structured questionnaire was conducted to obtain quantitative data from parents of recruited children.
    UNASSIGNED: : Chi-square was used to assess factors associated with ever hearing or seeing scabies and ringworm infestations. Statistical significance was set at P < 0.05.
    UNASSIGNED: One hundred and eighty-two (56.7%) and 218 (67.9%) of the respondents had heard of or seen scabies and ringworm infestation. Among respondents that were aware of scabies, 53.3% knew of the cause, 50.5% were aware of the risk factors while 68.1% and 78.0% knew their treatment and prevention, respectively; 98.6%, 60.6%, 76.6%, and 80.7% of respondents knew the cause, risk factors, treatment, and prevention of ringworm infestation, respectively. Fathers with at least secondary school literacy level and sharing beds were significantly associated with awareness of scabies.
    UNASSIGNED: There is a suboptimal level of awareness and knowledge of two of the most common superficial skin infestations among parents of primary school children in the study setting. There is a need to redouble our effort at sensitization of parents toward improved awareness of these common infestations.
    Résumé Contexte: Les facteurs de risque de persistance des infestations cutanées superficielles sont prévalents dans les environnements tropicaux humides, favorables à la reproduction du vecteur responsable, la gale Sarcoptes scabiei (ectoparasite), et des champignons dermatophytes. Objectif : Cette étude visait à évaluer la sensibilisation et les connaissances des parents de Calabar, un environnement tropical de forêt équatoriale très humide, concernant la gale et les infestations à la teigne chez les enfants. Cadre et conception : Une étude transversale et un échantillonnage systématique ont été utilisés pour recruter des enfants d\'âge scolaire dans des écoles primaires sélectionnées à Calabar. Méthodes et matériel: Une administration dirigée par le chercheur d\'un questionnaire structuré a été réalisée pour obtenir des données quantitatives auprès des parents des enfants recrutés. Analyse statistique utilisée: Le test du chi carré a été utilisé pour évaluer les facteurs associés à la connaissance de la gale et des infestations à la teigne. La signification statistique a été fixée à P < 0,05. Résultats: Cent quatre-vingt-deux (56,7 %) et 218 (67,9 %) des répondants avaient entendu parler ou vu une infestation de gale et de teigne. Parmi les répondants qui étaient au courant de la gale, 53,3 % connaissaient la cause, 50,5 % étaient conscients des facteurs de risque, tandis que 68,1 % et 78,0 % connaissaient respectivement leur traitement et leur prévention. De même, 98,6 %, 60,6 %, 76,6 % et 80,7 % des répondants connaissaient respectivement la cause, les facteurs de risque, le traitement et la prévention de l\'infestation à la teigne. Les pères ayant au moins un niveau d\'alphabétisation au niveau secondaire et partageant des lits étaient significativement associés à la connaissance de la gale. Conclusion: Il existe un niveau sous-optimal de sensibilisation et de connaissance de deux des infestations cutanées superficielles les plus courantes parmi les parents d\'enfants d\'école primaire dans le cadre de l\'étude. Il est nécessaire de redoubler d\'efforts pour sensibiliser les parents afin d\'améliorer la connaissance de ces infestations courantes. Mots-clés: Infestations cutanées, gale, teigne, connaissance, parents, enfants d\'âge scolaire, Nigeria.
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  • 文章类型: Journal Article
    为了限制牛癣的传播,强烈建议采取控制措施,如移动限制。在这种情况下,施蒂里亚州拍卖市场上的小牛,奥地利,显示牛癣的皮肤病变特征,被排除在拍卖之外。为了调查这些临床评估是否符合实验室诊断,总共166个样本取自皮肤损伤,这三个临床类别很可能是癣(v),可能(l)或不太可能(u)用显微镜检查真菌学,文化,和巢式PCR,然后进行扩增子测序。Further,通过多位点序列分型(MLST)确定分离的皮肤癣菌的关系。总的来说,用显微镜和巢式PCR观察到临床评估和实验室结果之间的高度一致性,提供更一致的结果和分子检测,具有优于文化隔离的分析灵敏度(文化21.7%vs.巢式PCR48.2%)。系统发育分析表明,大多数分离的皮肤癣菌属于独特的疣毛癣菌MLST基因型。总之,临床评估主要通过巢式PCR和测序的实验室诊断得到证实,提供快速,敏感,在拍卖市场上对小牛中的皮肤癣菌进行物种特异性检测,显示出典型的癣皮损;这似乎主要是由单个疣毛癣菌菌株引起的。
    To limit the spread of bovine ringworm, control measures such as movement restrictions are highly recommended. In this context, calves at auction markets in Styria, Austria, displaying skin lesions characteristic for bovine ringworm, are excluded from the auctions. To investigate whether these clinical assessments correspond to laboratory diagnosis, a total of 166 samples taken from skin lesions assigned to the three clinical categories \'ringworm very likely (v), likely (l) or unlikely (u)\' were mycologically examined using microscopy, culture, and nested PCR followed by amplicon sequencing. Further, the relationships of isolated dermatophytes were determined through multi-locus sequence typing (MLST). Overall, a high agreement between clinical assessment and laboratory results were observed with microscopy and nested PCR, providing more consistent results and molecular detection possessing an analytical sensitivity superior to that of cultural isolation (culture 21.7% vs. nested PCR 48.2%). Phylogenetic analyses revealed that most of the isolated dermatophytes belong to a unique Trichophyton verrucosum MLST genotype. In conclusion, clinical assessments were largely confirmed through laboratory diagnosis with nested PCR and sequencing, providing rapid, sensitive, and species-specific detection of dermatophytes in calves at auction markets displaying skin lesions typical for ringworm; this seems to be predominantly caused by a single Trichophyton verrucosum strain.
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  • 文章类型: Journal Article
    背景和目的:在引入griseofluvin之前,使用X线放射是头癣的首选治疗方法.半个多世纪后,由于头癣,已发现各种类型的肿瘤与儿童照射有关,最常见的头颈部癌症,以及脑肿瘤。这些肿瘤通常具有异常的侵袭性和复发性,因此需要反复手术。而由于辐射导致血管供应受损的萎缩性皮肤通常会给缺损重建带来额外的挑战。我们介绍了对此类患者进行手术治疗的经验。材料和方法:这是一项回顾性队列研究。在这项研究中,这项研究包括37例接受过获得性头皮缺陷治疗的患者,这些患者有儿童期头癣引起的放射治疗史。男性24例,女性13例。首次预约的平均年龄为60.6±7.8岁,其中年龄最小的患者为46岁,年龄最大的患者为75岁。患者特征,手术治疗,和并发症进行了分析,并开发了重建算法。结果:34例患者均采用局部皮瓣重建,10例患者使用了直接缝合,20例患者接受了裂层皮肤移植,以覆盖原发性和继发性缺损,重建皮瓣供体部位.一个区域皮瓣和一个由自体皮肤移植物覆盖的真皮替代品也用于重建。43.2%的患者发生并发症,并与合并症的存在显着相关(p=0.001),无菌性骨坏死(p=0.001),以及额叶皮肤萎缩,枕骨,和顶叶区域(分别为p=0.001,p=0.042和p=0.001)。仅在顶叶区域发现主要并发症与中度皮肤萎缩之间存在显着相关性(p=0.026)。结论:不幸的是,许多为头皮重建制定的方案不适用于严重或弥漫性头皮皮肤萎缩与高肿瘤复发率和辐射引起的血管损伤相关的情况。例如塞尔维亚的头癣患者。根据作者管理这些患者的经验,开发了一种算法。
    Background and Objectives: 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. We present our experience in the surgical treatment of such patients. Materials and Methods: This is a retrospective cohort study. In this study, 37 patients treated for acquired defects of the scalp with a history of irradiation therapy due to tinea capitis in childhood were included in this study, 24 male and 13 female patients. The mean age at the first appointment was 60.6 ± 7.8, with the youngest included patient being 46 and the oldest being 75 years old. Patients\' characteristics, surgical treatment, and complications were analyzed and a reconstructive algorithm was developed. Results: Local flaps were used for reconstruction in 34 patients, direct sutures were used in 10 patients and 20 patients received split-thickness skin grafts for coverage of both primary and secondary defects for reconstruction of flap donor sites. One regional flap and one dermal substitute covered by an autologous skin graft were also used for reconstruction. Complications occurred in 43.2% of patients and were significantly associated with the presence of comorbidities (p = 0.001), aseptic bone necrosis (p = 0.001), as well as skin atrophy in frontal, occipital, and parietal region (p = 0.001, p = 0.042 and p = 0.001, respectively). A significant correlation between major complications and moderate skin atrophy was found only in the parietal region (p = 0.026). Conclusions: Unfortunately, many protocols developed for scalp reconstruction are not applicable in the setting of severe or diffuse scalp skin atrophy associated with high tumor recurrence rate and radiation-induced vascular impairment, such as in tinea capitis patients in Serbia. An algorithm has been developed based on the authors\' experience in managing these patients.
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  • 文章类型: Case Reports
    背景:在猪中很少诊断出由毛癣菌的成员引起的皮肤癣菌病(癣),但已被认为是人类越来越常见的感染。Further,在亚洲和欧洲都有抗真菌药物耐药性的报道。这是北欧国家的猪中的T.mentagrosphytes复合体感染的第一份科学报告。
    方法:在户外生产的有机育肥猪场中,生长猪出现皮肤损伤,并进行实验室分析,诊断为由T.mentagrosphytes复合体成员引起的皮肤癣菌病。感染与不良的卫生状况有关,高湿度,室外温度适中,与高密度猪相结合。一名农场工人在与受影响的猪密切接触后出现皮肤损伤,这突出了猪皮肤癣菌病的人畜共患潜力。皮肤癣菌可能起源于为猪中发生类似病变的种植者提供的牛群。Further,来自另一个有机育肥牛群的猪也出现了皮肤癣菌病。随着住房条件的改善,病变无需治疗即可治愈。隔离受影响的猪可以防止传播到其他猪。当环境条件促进菌丝体生长时,真菌可能会持续存在于头发中,并可能引起明显的疾病。
    BACKGROUND: Dermatophytosis (ringworm) caused by members of the Trichophyton mentagrophytes complex is rarely diagnosed in pigs but has been recognized as an increasingly common infection in humans. Further, resistance to antifungal drugs have been reported both in Asia and in Europe. This is the first scientific report of infection by the T. mentagrophytes complex in pigs in the Nordic countries.
    METHODS: Skin lesions developed in grower pigs in an organic fattening pig farm with outdoor production and following laboratory analyses, dermatophytosis caused by members of the T. mentagrophytes complex was diagnosed. Infection was linked to poor hygiene, high humidity, and moderate outdoor temperatures, in combination with high pig density. A farm worker developed a skin lesion after close contact with affected pigs, which highlighted the zoonotic potential of porcine dermatophytosis. The dermatophytes may have originated from the herd supplying the growers where similar lesions occurred in pigs. Further, pigs from another organic fattening herd that received growers from the same supplier herd also developed dermatophytosis. The lesions healed without treatment as the housing conditions were improved. Isolation of affected pigs prevented spread to other pigs CONCLUSION: Members of the T. mentagrophytes complex can cause ringworm in pigs. The fungi probably persist in the haircoat and may cause overt disease when environmental conditions promote growth of mycelia.
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  • 文章类型: Case Reports
    背景:Mallory-Weiss综合征(MWS),代表胃食管连接处的线性粘膜撕裂,是上消化道出血的常见原因,通常由习惯性呕吐引起。在这种情况下,随后的心脏溃疡可能是由于胃内压力升高和胃食管括约肌闭合不当所致,共同诱导缺血性粘膜损伤。通常,MWS与所有呕吐状况有关,但它也被描述为长时间内窥镜手术或摄入异物的并发症。
    方法:我们在此描述了一例患有MWS和慢性精神痛苦的16岁女孩上消化道出血的病例,后者在她父母离婚后恶化了。病人,在2019年冠状病毒病大流行封锁期间居住在一个小岛上,有2个月的习惯性呕吐病史,呕血,还有轻微的抑郁情绪.最终,发现一个巨大的胃内梗阻性毛黄,并发现是由于一个隐藏的习惯,不断吃自己的头发;这个习惯一直持续了过去5年,直到食物摄入量急剧减少和相应的体重减轻。在没有上学的情况下,她的生活状态相对孤立,这加剧了她的强制习惯。毛发聚集已经达到如此巨大的尺寸,并且其坚固性是如此硬,以至于其用于内窥镜治疗的潜力被认为是不可能的。患者接受了手术干预,最终完全清除了肿块。
    结论:根据我们的知识,这是有史以来第一例由过大的毛孔引起的MWS病例。
    BACKGROUND: Mallory-Weiss syndrome (MWS), representing a linear mucosal laceration at the gastroesophageal junction, is a quite frequent cause of upper gastrointestinal bleeding, usually induced by habitual vomiting. The subsequent cardiac ulceration in this condition is likely due to the concomitance of increased intragastric pressure and inappropriate closure of the gastroesophageal sphincter, collectively inducing ischemic mucosal damage. Usually, MWS is associated with all vomiting conditions, but it has also been described as a complication of prolonged endoscopic procedures or ingested foreign bodies.
    METHODS: We described herein a case of upper gastrointestinal bleeding in a 16-year-old girl with MWS and chronic psychiatric distress, the latter of which deteriorated following her parents\' divorce. The patient, who was residing on a small island during the coronavirus disease 2019 pandemic lockdown period, presented with a 2-mo history of habitual vomiting, hematemesis, and a slight depressive mood. Ultimately, a huge intragastric obstructive trichobezoar was detected and discovered to be due to a hidden habit of continuously eating her own hair; this habit had persisted for the past 5 years until a drastic reduction in food intake and corresponding weight loss occurred. The relative isolation in her living status without school attendance had worsened her compulsory habit. The hair agglomeration had reached such enormous dimensions and its firmness was so hard that its potential for endoscopic treatment was judged to be impossible. The patient underwent surgical intervention instead, which culminated in complete removal of the mass.
    CONCLUSIONS: According to our knowledge, this is the first-ever described case of MWS due to an excessively large trichobezoar.
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  • 文章类型: Journal Article
    Panwad(决明子L.),Sarshaf(BrassicanigraL.)和Kunjad(SesamumindicumL.)自古以来就被用于治疗癣感染,并在Unani医学的古典文学中有记载。当以糊剂(zimad)的形式局部使用时,这些植物药物给出有希望的结果。因此,含有Tukhm-e-Panwad(决明子)提取物的乳膏的开发和评估,Sarshaf(BrassicanigraL.),并进行了Kunjad(SesamumindicumL.)以获得更好的药物疗效。通过添加不同浓度的药物水醇提取物(20%,40%和50%)在水中可移动底座中,并选择三个批次作为最终批次(F4-20%,F6-40%和F16-50%)。进行了体外抗皮肤癣菌活性,以优化对引起皮肤癣菌的真菌的MIC。在新西兰白化兔中测定制备的乳膏的皮肤刺激。不同浓度制备的乳膏的体内试验(20%,40%,和50%)还使用Wistar大鼠进行了评估,以评估其抗皮肤癣菌活性。最终批次在所有测试参数中都显示出良好的结果,并且以剂量依赖性方式在体外和体内具有显着的抗真菌活性。在制备的制剂中没有看到微生物生长。研究表明,制备的乳膏对引起皮肤癣菌的真菌具有显着的抗皮肤癣菌活性。因此,可以得出结论,所制备的乳膏可以作为治疗皮肤癣菌病的具有安全有效抗真菌活性的替代外用药物。
    Panwad (Cassia tora L.), Sarshaf (Brassica nigra L.) and Kunjad (Sesamum indicum L.) have been used in the treatment of ringworm infection since ancient times and are documented in classical literature of Unani Medicine. These plant drugs give promising results when used topically in the form of paste (zimad). Hence, the development and evaluation of a cream containing extracts of Tukhm-e-Panwad (Cassia tora L.), Sarshaf (Brassica nigra L.), and Kunjad (Sesamum indicum L.) was carried out to get better efficacy of the drugs. A total of 16 batches (F1-F16) of cream were prepared by adding varying concentrations of hydro-alcoholic extract of the drugs (20%, 40% and 50%) in water removable bases, and three batches were selected as final batches (F4-20%, F6-40% and F16-50%). In vitro antidermatophytic activity was conducted to optimize MIC against dermatophytosis-causing fungi. Dermal irritation of the prepared cream was determined in New Zealand Albino Rabbits. In vivo testing of the different concentrations of the prepared cream (20%, 40%, and 50%) was also carried out using Wistar rats to assess the antidermatophytic activity. Final batches showed good results in all the tested parameters and significant in vitro and in vivo antifungal activity in a dose-dependent manner. No microbial growth was seen in the prepared formulation. The study revealed significant antidermatophytic activity of the prepared cream against dermatophytosis-causing fungi. Hence, it can be concluded that the prepared cream can be an alternative topical agent with safe and effective antifungal activity for treating dermatophytosis.
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  • 文章类型: Case Reports
    疣毛癣菌是牛癣中最常见的皮肤癣菌。这项工作报告了通过SYBR-Green实时PCR从临床样品中检测到的一例因疣毛癣菌引起的牛皮肤癣菌病。该策略基于直接从感染的头发中提取DNA,然后进行实时PCR和熔点分析。与用于检测和鉴定疣毛癣菌的常规真菌学方法相比,观察到了更快的鉴别诊断。
    Trichophyton verrucosum is the most commonly dermatophyte involved in cattle ringworm. This work reported a case of bovine dermatophytosis due to Trichophyton verrucosum detected from the clinical sample by SYBR-Green real-time PCR. The strategy was based on the DNA extraction directly from the infected hair followed by real-time PCR and melting-point analysis. A faster and differential diagnosis was observed when compared to the conventional mycological methodology for detection and identification of Trichophyton verrucosum.
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  • 文章类型: Journal Article
    嗜角质真菌主要是居住在土壤中的生物,在人类和动物中偶尔会感染。尽管大多数皮肤癣菌是宿主适应的,跨物种感染是常见的嗜虫和嗜水皮肤癣菌。纳娜被认为是猪癣的病原体,但也从其他动物中分离出来,包括人类。然而,它还具有许多特性的嗜地皮肤癣菌,包括在土壤中生长的能力。N.nana产生特征性的梨形大分生孢子,通常表现出外生体的毛发感染模式。它已从皮炎病变和土壤中分离出来。就经济或健康而言,猪中的N.Nana感染并没有太大问题。但它与人类甲癣和淋病有关,这在人类医学中意义重大。皮肤癣菌在人类中的优势转移以及进化为潜在的癣病原体的能力,需要对N.nana的生理学和遗传学有更多的了解。在这次审查中,我们已经尝试了对NNA的研究的详细分析,强调生长和文化特征,生理学,隔离,人类和动物的感染,分子特征和抗真菌药敏。
    Keratinophilic fungi are mostly soil-inhabiting organisms with occasional infections in humans and animals. Even though most dermatophytes are host-adapted, cross-species infections are common by zoophilic and geophilic dermatophytes. N. nana is considered an etiological agent of ringworm in pigs but has also been isolated from other animals, including humans. However, it also possesses many characteristics of geophilic dermatophytes including the ability to grow in soil. N. nana produces characteristic pear-shaped macroconidia and usually exhibits an ectothrix pattern of hair infection. It has been isolated from dermatitis lesions as well as from soil. N. nana infections in pigs are not of much concern as far as economy or health is concerned. But it has been associated with onychomycosis and gonathritis in humans, which are significant in human medicine. The shift in the predominance of dermatophytes in humans and the ability to evolve into a potential tinea pathogen necessitates more understanding of the physiology and genetics of N. nana. In this review, we have attempted a detailed analysis of the studies about N. nana, emphasizing growth and cultural characters, physiology, isolation, infection in humans and animals, molecular characterization and antifungal susceptibility.
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