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Zingerone effect against Candida albicans growth and biofilm production 生姜酮对白色念珠菌生长和生物膜生成的抑制作用。
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-12-13 DOI: 10.1016/j.mycmed.2024.101527
Sayali Chougule , Sargun Basrani , Tanjila Gavandi , Shivani Patil , Shivanand Yankanchi , Ashwini Jadhav , Sankunny Mohan Karuppayil

Background

The increasing resistance of Candida albicans biofilms underscores the urgent need for effective antifungals. This study evaluated the efficacy of zingerone and elucidated its mode of action against C. albicans ATCC 90028 and clinical isolate C1.

Experimental Procedure

Minimum inhibitory concentrations (MICs) of zingerone were determined using CLSI methods against planktonic cells, biofilm formation, and yeast-to-hyphal transition. The mode of action was investigated through fluorescent microscopy, ergosterol assays, cell cycle analysis, and RT-PCR for gene expression.

Key Results

Zingerone inhibited planktonic growth and biofilm formation at in C. albicans ATCC 90028 and clinical isolate C1 at 2 mg/mL 4 mg/mL and 1 mg/mL and 2 mg/mL respectively. Treatment with the MIC concentration caused significant cell cycle arrest at the G0/G1 phase, halting proliferation in both the strains. Propidium iodide Staining revealed compromised membrane integrity in both the strains. Also, acridine orange and ethidium bromide dual staining showed increased dead cell proportions in C. albicans ATCC 90028. RT-PCR studies showed downregulation of BCY1, PDE2, EFG1, and upregulation of negative regulators NRG1, TUP1 disrupting growth and virulence pathways. Zingerone induced elevated reactive oxygen species (ROS) levels, triggering apoptosis, evidenced by DNA fragmentation and upregulation of apoptotic markers. It also inhibited ergosterol synthesis in a concentration-dependent manner, crucial for membrane integrity. Importantly, zingerone exhibited minimal hemolytic activity. In an in vivo silkworm model, zingerone demonstrated significant antifungal efficacy, protecting silkworms from infection. It also modulated stress response genes, highlighting its multifaceted action.

Conclusions

In vitro and in vivo findings confirm the potent antifungal efficacy of zingerone against C. albicans ATCC 90028 and clinical isolate C1, suggesting its promising potential as a therapeutic agent that warrants further exploration.
背景:随着白色念珠菌生物膜耐药性的增加,迫切需要有效的抗真菌药物。本研究评价了生姜酮对白色念珠菌ATCC 90028及临床分离株C1的作用机制。实验步骤:使用CLSI方法测定姜酮对浮游细胞、生物膜形成和酵母-菌丝转化的最低抑制浓度(mic)。通过荧光显微镜、麦角甾醇测定、细胞周期分析和RT-PCR检测基因表达来研究其作用模式。关键结果:生姜酮分别以2 mg/mL、4 mg/mL、1 mg/mL和2 mg/mL浓度抑制白色念珠菌ATCC 90028和临床分离菌C1的浮游生物生长和生物膜形成。MIC浓度处理导致细胞周期阻滞在G0/G1期,两株细胞均停止增殖。碘化丙啶染色显示两种菌株的膜完整性受损。吖啶橙和溴化乙啶双染色显示白色念珠菌ATCC 90028的死细胞比例增加。RT-PCR研究显示BCY1、PDE2、EFG1下调,负调控因子NRG1、TUP1上调,破坏生长和毒力通路。姜酮诱导活性氧(ROS)水平升高,引发细胞凋亡,DNA断裂和凋亡标志物上调证明了这一点。它还以浓度依赖性的方式抑制麦角甾醇的合成,这对膜的完整性至关重要。重要的是,姜酮表现出最小的溶血活性。在家蚕体内模型中,生姜酮显示出明显的抗真菌作用,保护家蚕免受感染。它还调节应激反应基因,突出其多方面的作用。结论:体内外实验结果证实了姜酮对白色念珠菌ATCC 90028和临床分离物C1具有较强的抗真菌作用,提示其作为一种治疗药物的潜力值得进一步探索。
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引用次数: 0
Inhibitory potency of active metabolites from different polarities of Datura Stramonium seed extracts: GC-MS analysis, biological evaluations, and molecular docking studies 曼陀罗种子不同极性提取物活性代谢物的抑制效能:GC-MS分析、生物学评价和分子对接研究。
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-11-21 DOI: 10.1016/j.mycmed.2024.101521
K. Hjouji , A. El Barnossi , M. Er-rajy , I. Atemni , A. Grenha , M. Yagoubi , T. Ainane , M. Taleb , Z. Rais
Datura Stramonium is a well-known and important medicinal plant that is widely used in various medical systems to treat conditions such as asthma, diabetes, and inflammatory diseases. The aim of this study was to prepare extracts of D. stramonium seeds in different solvent polarities for assessing phytochemical potential, in vitro biological activities, and molecular docking studies. Phytochemical screening was conducted to determine the phytochemical composition, while GC-MS analysis was used to identify secondary metabolites of D. Stramonium. The seed extracts were molecularly docked to evaluate bioactive and antioxidant activity. The minimum inhibitory concentration (MIC) of the extracts against bacteria such as S. aureus, E. coli, Bacillus subtilis, and Proteus mirabilis was determined. Antifungal activity was also tested against fungi including Aspergillus flavus, Fusarium oxysporum, Aspergillus niger, and Candida albicans. The results of phytochemical screening indicated that the primary plant constituents in all extracts of different polarities are alkaloids, flavonoids, tannins, mucilage, sterols, heterosides, triterpenoids, and cardiac glycosides. Most molecules in the hexane, ether, and chloroform extracts consist of fatty acids, sterols, glycosides, triterpenoids, alkaloids, and phenolic compounds, as revealed by GC-MS analysis. Conversely, extracts from polar solvents like methanol, ethanol, and water are abundant in alkaloids. In vitro antibacterial and antifungal activities demonstrated that ether, methanol, and ethanol extracts were more effective than inhibiting the four bacterial strains compared to the antibiotics Oxacillin and Cefuroxime. The ether and methanol extracts exhibited better zones of inhibition and significant MIC values against A. niger and C. albicans compared to the control and fluconazole. The free radical inhibition (DPPH) (24.92 ± 5.31 μg/mL) for the ethanol extract indicates Datura's antioxidant capacity. It is believed that the main phytochemicals are responsible for the enhanced antioxidant activity observed in other studies. The docking study revealed that the bioactive compounds linoleic acid and atropine formed better hydrogen bonding interactions with proteins than pi-alkyl and alkyl bonds.
曼陀罗是一种众所周知的重要药用植物,广泛用于各种医疗系统中,用于治疗哮喘、糖尿病和炎症性疾病。本研究的目的是制备不同极性溶剂条件下的沙草种子提取物,用于植物化学势、体外生物活性和分子对接研究。通过植物化学筛选确定其植物化学成分,GC-MS分析鉴定其次生代谢产物。对种子提取物进行分子对接,评价其生物活性和抗氧化活性。测定了提取物对金黄色葡萄球菌、大肠杆菌、枯草芽孢杆菌、奇异变形杆菌等细菌的最低抑菌浓度。抗真菌活性也测试了真菌包括黄曲霉,尖孢镰刀菌,黑曲霉和白色念珠菌。植物化学筛选结果表明,不同极性提取物的主要成分为生物碱、类黄酮、单宁、粘液、甾醇、杂苷、三萜和心苷。GC-MS分析显示,己烷、乙醚和氯仿提取物中的大部分分子由脂肪酸、甾醇、糖苷、三萜、生物碱和酚类化合物组成。相反,从极性溶剂如甲醇、乙醇和水中提取的提取物富含生物碱。体外抗菌和抗真菌活性表明,醚、甲醇和乙醇提取物对四种细菌的抑制效果优于抗生素奥西林和头孢呋辛。与对照和氟康唑相比,乙醚和甲醇提取物对黑曲霉和白色念珠菌具有更好的抑制区和显著的MIC值。乙醇提取物对自由基的抑制作用(DPPH)为24.92±5.31 μg/mL,表明曼陀罗具有抗氧化能力。据认为,主要的植物化学物质是负责在其他研究中观察到的抗氧化活性增强。对接研究表明,生物活性化合物亚油酸和阿托品与蛋白质形成的氢键作用优于pi-烷基和烷基键。
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引用次数: 0
Species distribution and antifungal susceptibility patterns of Candida involvement in pediatric solid organ transplant recipients: A cross-sectional study from a single transplant center 儿童实体器官移植受者念珠菌感染的种类分布和抗真菌敏感性模式:来自单一移植中心的横断面研究。
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-11-19 DOI: 10.1016/j.mycmed.2024.101522
Somayeh Yazdanpanah , Mojtaba Shafiekhani , Zahra Zare , Hamed Nikoupour , Bita Geramizadeh , Parisa Chamanpara , Ahmad Jabrodini , Mohammad Ahmadi , Zahra Malekizadeh , Mohammad Hossein Anbardar , Keyvan Pakshir , Kamiar Zomorodian
The epidemiology and resistance patterns of Candida infections in pediatric kidney/liver recipients has not been well characterized, recently. In this study, all patients ≤ 18 years old who underwent liver/kidney transplant surgery between September 2021 and 2022 were included. Species identification of isolates recovered from clinical specimens was performed by DNA-sequencing method following amplification of the ITS1–5.8S–ITS2 regions. Antifungal susceptibility patterns of isolates were performed using the micro broth dilution method documented by Clinical & Laboratory Standards Institute (CLSI) guidelines. Of the 117 pediatric recipients enrolled, 16 recipients (13.7 %) had at least one positive Candida culture. Candidemia was detected in 5/89 (5.6 %) of liver and 1/28 (3.6 %) of kidney transplant recipients. Invasive candidiasis was observed in 6/89 (6.7 %) of liver and 2/28 (7.1 %) of kidney transplant recipients. The predominant species was Candida (C.) albicans recovered from 12 of 16 recipients (75 %). In addition to the Pichia kudriavzevii species with inherent resistance to fluconazole, one of C. albicans isolates and one C. tropicalis isolate were also identified as fluconazole-resistant (3/29:10.3 %). Moreover, our findings revealed 13.8 % and 6.8 % resistance to itraconazole and voriconazole, respectively. All Candida spp. were susceptible to caspofungin. Collectively, this study provides valuable insights into the epidemiology and resistance patterns of Candida infections in pediatric kidney and liver recipients. The study also highlights the emergence of fluconazole-resistant strains, which has significant implications for antifungal stewardship efforts in pediatric transplant populations.
最近,儿童肾/肝受体念珠菌感染的流行病学和耐药模式尚未得到很好的表征。本研究纳入了2021年9月至2022年9月期间接受肝/肾移植手术的所有≤18岁的患者。临床标本中分离株的种类鉴定采用dna测序法,扩增ITS1-5.8S-ITS2区。采用临床与实验室标准协会(CLSI)指南规定的微肉汤稀释法对分离株进行抗真菌药敏分析。在纳入的117名儿科受体中,16名受体(13.7%)至少有一种念珠菌培养阳性。肝移植受者中有5/89(5.6%)、肾移植受者中有1/28(3.6%)检出念珠菌。肝移植受者中有6/89(6.7%)、肾移植受者中有2/28(7.1%)存在侵袭性念珠菌感染。16例受检者中有12例(75%)检出白色念珠菌。除对氟康唑固有耐药外,1株白色念珠菌和1株热带念珠菌也被鉴定为氟康唑耐药(3/29:10.3%)。对伊曲康唑和伏立康唑的耐药率分别为13.8%和6.8%。所有念珠菌均对卡泊芬菌素敏感。总的来说,这项研究为儿童肾脏和肝脏受体念珠菌感染的流行病学和耐药性模式提供了有价值的见解。该研究还强调了氟康唑耐药菌株的出现,这对儿科移植人群的抗真菌管理工作具有重要意义。
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引用次数: 0
Laboratory practices for the diagnosis and management of mucormycosis in France, 2024 2024 年法国粘孢子菌病诊断和管理的实验室实践。
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-11-14 DOI: 10.1016/j.mycmed.2024.101520
Laurence Millon , Françoise Botterel , Julie Bonhomme , Stéphane Valot , Philippe Poirier , Marie-Fleur Durieux , Jeanne Bigot , Guillaume Desoubeaux , Adélaïde Chesnais , Florent Morio , Marc Pihet , Kévin Brunet , Anne-Pauline Bellanger , Sébastien Imbert , Gilles Nevez , Solène Le Gal , Nathalie Bourgeois , Anne Debourgogne , Marjorie Cornu , Florence Persat , Eric Dannaoui
This study investigates the diagnostic practices for mucormycosis among 30 French University Hospital mycology laboratories, in 2024. All laboratories perform both direct examination and culture, with fluorescent brighteners being the most commonly used method for direct examination. While 77 % of the participating laboratories routinely identify Mucorales to the species level, with 70 % having adopted Mucorales-specific quantitative PCR, primarily for the diagnosis of invasive fungal infections. Antifungal susceptibility testing practices varied between centers, with 36.7 % of laboratories consistently performing these tests, primarily using gradient concentration strips. Amphotericin B, posaconazole, and isavuconazole were the most frequently tested antifungals. These findings highlight variations in laboratory practices and emphasize the importance of establishing uniform diagnostic and susceptibility testing methods to optimize mucormycosis management.
本研究调查了 2024 年法国 30 所大学医院真菌学实验室对粘孢子菌病的诊断方法。所有实验室都进行直接检查和培养,荧光增白剂是最常用的直接检查方法。77% 的参与实验室会对真菌菌种进行常规鉴定,70% 的实验室采用了真菌特异性定量 PCR 技术,主要用于诊断侵袭性真菌感染。各中心的抗真菌药敏试验方法不尽相同,36.7%的实验室一直在进行这些试验,主要使用梯度浓度条。两性霉素 B、泊沙康唑和异武康唑是最常检测的抗真菌药物。这些发现凸显了实验室实践中的差异,并强调了建立统一的诊断和药敏试验方法对优化粘孢子菌病管理的重要性。
{"title":"Laboratory practices for the diagnosis and management of mucormycosis in France, 2024","authors":"Laurence Millon ,&nbsp;Françoise Botterel ,&nbsp;Julie Bonhomme ,&nbsp;Stéphane Valot ,&nbsp;Philippe Poirier ,&nbsp;Marie-Fleur Durieux ,&nbsp;Jeanne Bigot ,&nbsp;Guillaume Desoubeaux ,&nbsp;Adélaïde Chesnais ,&nbsp;Florent Morio ,&nbsp;Marc Pihet ,&nbsp;Kévin Brunet ,&nbsp;Anne-Pauline Bellanger ,&nbsp;Sébastien Imbert ,&nbsp;Gilles Nevez ,&nbsp;Solène Le Gal ,&nbsp;Nathalie Bourgeois ,&nbsp;Anne Debourgogne ,&nbsp;Marjorie Cornu ,&nbsp;Florence Persat ,&nbsp;Eric Dannaoui","doi":"10.1016/j.mycmed.2024.101520","DOIUrl":"10.1016/j.mycmed.2024.101520","url":null,"abstract":"<div><div>This study investigates the diagnostic practices for mucormycosis among 30 French University Hospital mycology laboratories, in 2024. All laboratories perform both direct examination and culture, with fluorescent brighteners being the most commonly used method for direct examination. While 77 % of the participating laboratories routinely identify Mucorales to the species level, with 70 % having adopted Mucorales-specific quantitative PCR, primarily for the diagnosis of invasive fungal infections. Antifungal susceptibility testing practices varied between centers, with 36.7 % of laboratories consistently performing these tests, primarily using gradient concentration strips. Amphotericin B, posaconazole, and isavuconazole were the most frequently tested antifungals. These findings highlight variations in laboratory practices and emphasize the importance of establishing uniform diagnostic and susceptibility testing methods to optimize mucormycosis management.</div></div>","PeriodicalId":14824,"journal":{"name":"Journal de mycologie medicale","volume":"34 4","pages":"Article 101520"},"PeriodicalIF":2.2,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eradication of Candida auris biofilm in vitro by a polygalacturonic and caprylic acid wound ointment 聚半乳糖醛酸和辛酸伤口软膏在体外根除念珠菌生物膜。
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-11-05 DOI: 10.1016/j.mycmed.2024.101519
Y-Lan Truong, Joel Rosenblatt, Bahgat Gerges, Ying Jiang, Issam Raad
Candida auris is a rapidly spreading virulent pathogen frequently resistant to multiple antifungal drugs that can form biofilms and infect wounds. Hence, there is a need for C. auris wound treatments not posing risks for developing antifungal resistance. We tested the ability of a polygalacturonic and caprylic acid ointment (PG+CAP) to rapidly eradicate C. auris biofilms within 2-hour exposures in an in vitro model. Medical-grade honey (MediHoney) wound ointment was used as a comparator. Nine different C. auris strains were tested. PG+CAP eradicated biofilms of 8 of the 9 tested strains and produced a > 5-log10 reduction of the ninth. MediHoney produced reductions ranging from 2 to 4 log10 without fully eradicating any strains. The differences between PG+CAP and MediHoney were statistically significant (p < 0.05). These results suggest that PG+CAP is a promising antimicrobial ointment warranting further in vivo study in wounds which may be colonized by C. auris biofilms.
念珠菌是一种传播迅速的烈性病原体,经常对多种抗真菌药物产生抗药性,可形成生物膜并感染伤口。因此,需要一种不会产生抗真菌抗药性风险的念珠菌伤口治疗方法。我们在体外模型中测试了聚半乳糖醛酸和辛酸软膏(PG+CAP)在 2 小时暴露时间内快速消灭蛔虫生物膜的能力。医用级蜂蜜(MediHoney)伤口软膏作为对比药。测试了九种不同的 C. auris 菌株。PG+CAP 根除了 9 种测试菌株中 8 种菌株的生物膜,并使第 9 种菌株的生物膜减少 > 5-log10。MediHoney 能减少 2 到 4 log10 的菌株,但不能完全根除任何菌株。PG+CAP 和 MediHoney 之间的差异具有统计学意义(p < 0.05)。这些结果表明,PG+CAP 是一种很有前景的抗菌软膏,值得在可能有肛门脓疱疮杆菌生物膜定植的伤口中进一步进行体内研究。
{"title":"Eradication of Candida auris biofilm in vitro by a polygalacturonic and caprylic acid wound ointment","authors":"Y-Lan Truong,&nbsp;Joel Rosenblatt,&nbsp;Bahgat Gerges,&nbsp;Ying Jiang,&nbsp;Issam Raad","doi":"10.1016/j.mycmed.2024.101519","DOIUrl":"10.1016/j.mycmed.2024.101519","url":null,"abstract":"<div><div><em>Candida auris</em> is a rapidly spreading virulent pathogen frequently resistant to multiple antifungal drugs that can form biofilms and infect wounds. Hence, there is a need for <em>C. auris</em> wound treatments not posing risks for developing antifungal resistance. We tested the ability of a polygalacturonic and caprylic acid ointment (PG+CAP) to rapidly eradicate <em>C. auris</em> biofilms within 2-hour exposures in an <em>in vitro</em> model. Medical-grade honey (MediHoney) wound ointment was used as a comparator. Nine different <em>C. auris</em> strains were tested. PG+CAP eradicated biofilms of 8 of the 9 tested strains and produced <em>a</em> &gt; 5-log<sub>10</sub> reduction of the ninth. MediHoney produced reductions ranging from 2 to 4 log<sub>10</sub> without fully eradicating any strains. The differences between PG+CAP and MediHoney were statistically significant (<em>p</em> &lt; 0.05). These results suggest that PG+CAP is a promising antimicrobial ointment warranting further <em>in vivo</em> study in wounds which may be colonized by <em>C. auris</em> biofilms.</div></div>","PeriodicalId":14824,"journal":{"name":"Journal de mycologie medicale","volume":"34 4","pages":"Article 101519"},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Veronaea botryosa induced cutaneous phaeohyphomycosis in a renal transplant recipient- An intriguing report from India 一名肾移植受者因植物马鞭草诱发的皮肤真菌病--来自印度的一份耐人寻味的报告
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-11-05 DOI: 10.1016/j.mycmed.2024.101518
Harsimran Kaur , Haseen Ahmad , Sukriti Yadav , Muthu Sendhil Kumaran , Ashish Sharma , Suvradeep Mitra , Amanjit Bal , Sourav Agnihotri , Shivaprakash M Rudramurthy
We describe a rare case of cutaneous phaeohyphomycosis by Veronaea botryosa in a renal transplant recipient from India. The patient presented with a nodule on the dorsum of right hand which resolved completely after 6 months of voriconazole therapy. The identity of the fungus was confirmed by sequencing internal transcribed spacer (ITS) region of rDNA. The case depicts its ubiquitous presence worldwide.
我们描述了一例来自印度的肾移植受者皮肤噬菌体病变(Veronaea botryosa)的罕见病例。患者右手背出现一个结节,接受伏立康唑治疗 6 个月后完全消退。通过对 rDNA 内部转录间隔区(ITS)进行测序,确认了该真菌的身份。该病例说明这种真菌在世界各地无处不在。
{"title":"Veronaea botryosa induced cutaneous phaeohyphomycosis in a renal transplant recipient- An intriguing report from India","authors":"Harsimran Kaur ,&nbsp;Haseen Ahmad ,&nbsp;Sukriti Yadav ,&nbsp;Muthu Sendhil Kumaran ,&nbsp;Ashish Sharma ,&nbsp;Suvradeep Mitra ,&nbsp;Amanjit Bal ,&nbsp;Sourav Agnihotri ,&nbsp;Shivaprakash M Rudramurthy","doi":"10.1016/j.mycmed.2024.101518","DOIUrl":"10.1016/j.mycmed.2024.101518","url":null,"abstract":"<div><div>We describe a rare case of cutaneous phaeohyphomycosis by <em>Veronaea botryosa</em> in a renal transplant recipient from India. The patient presented with a nodule on the dorsum of right hand which resolved completely after 6 months of voriconazole therapy. The identity of the fungus was confirmed by sequencing internal transcribed spacer (ITS) region of rDNA. The case depicts its ubiquitous presence worldwide.</div></div>","PeriodicalId":14824,"journal":{"name":"Journal de mycologie medicale","volume":"34 4","pages":"Article 101518"},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunotherapy against environmental fungi causing respiratory allergy 针对引起呼吸道过敏的环境真菌的免疫疗法
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-10-30 DOI: 10.1016/j.mycmed.2024.101517
Umut Gazi , Nerin Nadir Bahceciler
Allergic respiratory diseases (ARDs) have been one of the major global health problems of the 21st century with an increasing prevalence. A significant proportion of aerobiological particles in the environment is constituted by fungal structures, including those from Alternaria, Cladosporium, Penicillium, and Aspergillus species which are regarded as the four most common fungal genera associated with allergic fungal airway diseases (AFADs). Allergen specific immunotherapy (AIT) has capacity to promote protection as well as long-term tolerance to the allergen, however there have not been adequate number of studies evaluating the efficacy of against AFADs, up till today. Our review would like to draw more attention to the field by summarizing the current literature regarding the clinical use of the immunotherapy, with special focus on Alternaria, and Cladosporium AITs. The area is considered to be vital to public health due to the potential increase in global AFAD cases because of ongoing air pollution and climate impacts. The review also aims to sum up immunological findings associated with mould-AIT which would help further studies to be performed in order to develop an objective method to identify non-responders early in the course of therapy.
过敏性呼吸道疾病(ARDs)是 21 世纪全球主要健康问题之一,发病率不断上升。环境中的空气生物微粒有很大一部分是由真菌结构构成的,包括来自交替孢属、克拉多孢属、青霉属和曲霉属的真菌,它们被认为是与过敏性真菌气道疾病(AFADs)相关的四个最常见的真菌属。过敏原特异性免疫疗法(AIT)能够促进对过敏原的保护和长期耐受,但到目前为止,还没有足够数量的研究评估其对过敏性真菌气道疾病的疗效。我们的综述希望通过总结当前有关免疫疗法临床应用的文献,引起人们对这一领域的更多关注,并特别关注交替孢属和克拉多孢属 AITs。由于持续的空气污染和气候影响可能导致全球甲沟炎病例增加,因此该领域被认为对公共卫生至关重要。本综述还旨在总结与霉菌-AIT 相关的免疫学研究结果,这将有助于开展进一步的研究,以便开发出一种客观的方法,在治疗过程的早期识别无应答者。
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引用次数: 0
Fungal disease incidence and prevalence in Iraq – Preliminary estimates 伊拉克真菌病发病率和流行率--初步估计。
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-10-30 DOI: 10.1016/j.mycmed.2024.101516
Karzan A. Mohammad , Hero M. Ismail , Khattab A.M. Shekhany , Raya Kh. Yashooa , Delan A. Younus , Samir Kh. Abdullah , Azhar A.F. Alatraqchi , Rasool Aldabbagh , David W. Denning

Background

The surveillance of serious and superficial skin fungal infections in Iraq has not been conducted. Limited information exists on their incidence and prevalence.

Objectives

This study aimed to analyze, compute and estimate the prevalence and burden of fungal infections, as no previous data is available and no studies has been attempted in Iraq.

Methods

In the present study the data were collected and reviewed from published data on epidemiology of fungal infections nationally, internationally, from unpublished postgraduate master and PhD theses, hospital records and private clinic records. External sources of data from other countries were used for diseases which lacked sufficient local data.

Results

We estimated 985,628 annual serious infections comprising of 2.26 % of the total population. When including superficial fungal infections group of the skin, this rises to 2,075,113 infections at 4.76 % of the total population. The most common serious and skin infections were recurrent Candida vaginitis, fungal rhinosinusitis and tinea capitis comprising 61.5 %, 21.8 %, and 22.4 % of all infections although the total incidence of superficial fungal infections was also high at 1,071,485. Respiratory fungal disease is also common comprising 14.0 % of infections. We predicted the following annual burden per 100,000; oral candidiasis at 247.9, esophageal candidiasis at 6.04, candidemia at 5.0, Candida peritonitis at 0.75, recurrent Candida vaginitis at 5461, allergic bronchopulmonary aspergillosis at 35, severe asthma with fungal sensitisation at 46, invasive aspergillosis at 7.9, chronic pulmonary aspergillosis at 11.7, chronic fungal rhinosinusitis at 496, mucormycosis at 0.99, fungal keratitis at 14.0, and total dermatophytosis at 1631, the most severe being tinea capitis at 366. Many of these estimates were made with data sourced from other nations, so additional data from Iraq is required to validate or modify these estimates.

Conclusion

Recurrent Candida vaginitis, fungal rhinosinusitis, and tinea capitis are considered to be the most frequent fungal diseases present in Iraq.
背景:伊拉克尚未对严重的表皮真菌感染进行监测。有关其发病率和流行率的信息十分有限:本研究旨在分析、计算和估计真菌感染的发病率和负担,因为以前没有这方面的数据,也没有在伊拉克进行过研究:本研究收集和审查的数据来自国内和国际已发表的真菌感染流行病学数据、未发表的研究生硕士和博士论文、医院记录和私人诊所记录。对于缺乏足够本地数据的疾病,我们还使用了其他国家的外部数据来源:我们估计每年有 985 628 例严重感染病例,占总人口的 2.26%。如果将皮肤浅表真菌感染包括在内,感染人数将增至 2,075,113 人,占总人口的 4.76%。最常见的严重感染和皮肤感染是复发性念珠菌阴道炎、真菌性鼻炎和头癣,分别占感染总数的 61.5%、21.8% 和 22.4%,尽管浅表真菌感染的总发病率也高达 1,071,485 例。呼吸道真菌病也很常见,占感染总数的 14.0%。我们预测每 100,000 人每年的负担如下:口腔念珠菌病为 247.9 人,食道念珠菌病为 6.04 人,念珠菌血症为 5.0 人,念珠菌腹膜炎为 0.75 人,复发性念珠菌阴道炎为 5461 人,过敏性支气管肺曲霉菌病为 35 人,伴有真菌过敏的严重哮喘为 46 人,侵袭性曲霉菌病为 7.9,慢性肺曲霉菌病(11.7),慢性真菌性鼻炎(496),粘孢子菌病(0.99),真菌性角膜炎(14.0),总的皮癣病(1631),其中最严重的是头癣(366)。其中许多估计值是根据其他国家的数据得出的,因此需要更多来自伊拉克的数据来验证或修改这些估计值:结论:复发性念珠菌阴道炎、真菌性鼻炎和头癣被认为是伊拉克最常见的真菌疾病。
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引用次数: 0
Formulation and evaluation of herbal essential oil based nail lacquer for management of onychomycosis 用于治疗甲癣的草本精油指甲油的配制与评估
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-10-26 DOI: 10.1016/j.mycmed.2024.101515
Ravi Goyal , Annima Goyal , Azmat Ali Khan , Sabiha Fatima , Tanveer Singh , Deepinder Singh Malik

Introduction

Onychomycosis (Paronychia) is a common fungal nail infection, characterised by thickened, discoloured and brittle nails often accompanied by pain and discomfort. It is one of the most prevalent fungal nail infections with the global incidence of >20 % affected commonly by Candida albicans and Candida parapsilosis. The market today is flooded with various antifungal therapies (Azoles, Imidazoles, Allylamines, etc.) but their clinical applicability is limited due to associated side effects. The study is an attempt to formulate essential oil-based nail lacquer against Candidal Onychomycosis.

Material and Method

Selection of essential oils and preparation of their blends (EOB) was made on basis of their antifungal activity (minimum inhibitory concentration; MIC and zone of inhibition; ZOI) and physiological effect they exhibit on varied pathological parameters of onychomycosis. Simultaneously, varied batches of nail lacquer (N1-N5) were prepared by varying the concentrations of polymer and film forming agent and were evaluated for their formulatory characteristics (drying time, incidence of white patches, film texture, etc.). Optimal nail lacquer batch was loaded with screened EOB and was evaluated for various characteristics and antifungal activity.

Result

The formulation F4 was found to form a smooth, transparent film over the nail with absence of any tackiness or white patches. Moreover, F4 formulation exhibited minimum MIC among varied batches and higher ZOI (4.3 cm) as compared to marketed preparation (3.5 cm), indicating better antifungal activity.

Conclusion

Essential oils, as an active agent, could prove to be a natural, safer, and more effective alternative to the conventionally available topical preparations for the management of fungal infections. The development of this herbal mixture opens up new possibilities for treating onychomycosis, necessitating additional research and clinical studies to establish its clinical safety, efficacy, and viability.
简介甲癣(甲旁癣)是一种常见的真菌性指甲感染,主要表现为指甲增厚、变色和变脆,通常伴有疼痛和不适。它是最常见的真菌性指甲感染之一,全球发病率超过 20%,主要由白色念珠菌和副丝状念珠菌引起。目前,市场上充斥着各种抗真菌疗法(偶氮类、咪唑类、烯丙基胺类等),但由于相关副作用,其临床适用性有限。本研究尝试配制以精油为基础的指甲油,以防治念珠菌性甲癣:材料和方法:根据精油的抗真菌活性(最低抑菌浓度和抑菌区)以及它们对不同真菌病病理参数的生理效应,选择精油并配制它们的混合物(EOB)。同时,通过改变聚合物和成膜剂的浓度制备了不同批次的指甲油(N1-N5),并对其配方特性(干燥时间、白斑发生率、膜质等)进行了评估。在最佳指甲油批次中加入筛选出的 EOB,并对其各种特性和抗真菌活性进行评估:结果:F4 配方在指甲上形成了一层光滑透明的薄膜,没有任何粘性或白斑。此外,与市场上销售的制剂(3.5 厘米)相比,F4 制剂在不同批次中的 MIC 最低,ZOI(4.3 厘米)较高,表明其具有更好的抗真菌活性:精油作为一种活性剂,可以证明是治疗真菌感染的一种天然、更安全、更有效的替代品,可以替代传统的外用制剂。这种草药混合物的开发为治疗甲癣提供了新的可能性,但还需要更多的研究和临床研究来确定其临床安全性、有效性和可行性。
{"title":"Formulation and evaluation of herbal essential oil based nail lacquer for management of onychomycosis","authors":"Ravi Goyal ,&nbsp;Annima Goyal ,&nbsp;Azmat Ali Khan ,&nbsp;Sabiha Fatima ,&nbsp;Tanveer Singh ,&nbsp;Deepinder Singh Malik","doi":"10.1016/j.mycmed.2024.101515","DOIUrl":"10.1016/j.mycmed.2024.101515","url":null,"abstract":"<div><h3>Introduction</h3><div>Onychomycosis (Paronychia) is a common fungal nail infection, characterised by thickened, discoloured and brittle nails often accompanied by pain and discomfort. It is one of the most prevalent fungal nail infections with the global incidence of &gt;20 % affected commonly by <em>Candida albicans</em> and <em>Candida parapsilosis.</em> The market today is flooded with various antifungal therapies (Azoles, Imidazoles, Allylamines, etc.) but their clinical applicability is limited due to associated side effects. The study is an attempt to formulate essential oil-based nail lacquer against Candidal Onychomycosis.</div></div><div><h3>Material and Method</h3><div>Selection of essential oils and preparation of their blends (EOB) was made on basis of their antifungal activity (minimum inhibitory concentration; MIC and zone of inhibition; ZOI) and physiological effect they exhibit on varied pathological parameters of onychomycosis. Simultaneously, varied batches of nail lacquer (N1-N5) were prepared by varying the concentrations of polymer and film forming agent and were evaluated for their formulatory characteristics (drying time, incidence of white patches, film texture, etc.). Optimal nail lacquer batch was loaded with screened EOB and was evaluated for various characteristics and antifungal activity.</div></div><div><h3>Result</h3><div>The formulation F4 was found to form a smooth, transparent film over the nail with absence of any tackiness or white patches. Moreover, F4 formulation exhibited minimum MIC among varied batches and higher ZOI (4.3 cm) as compared to marketed preparation (3.5 cm), indicating better antifungal activity.</div></div><div><h3>Conclusion</h3><div>Essential oils, as an active agent, could prove to be a natural, safer, and more effective alternative to the conventionally available topical preparations for the management of fungal infections. The development of this herbal mixture opens up new possibilities for treating onychomycosis, necessitating additional research and clinical studies to establish its clinical safety, efficacy, and viability.</div></div>","PeriodicalId":14824,"journal":{"name":"Journal de mycologie medicale","volume":"34 4","pages":"Article 101515"},"PeriodicalIF":2.2,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142619812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prevalence and outcome of candidemia among paediatric cancer patients: A single centre experience from India 儿科癌症患者念珠菌血症的发病率和治疗效果:印度单一中心的经验
IF 2.2 4区 医学 Q3 MYCOLOGY Pub Date : 2024-10-24 DOI: 10.1016/j.mycmed.2024.101510
Poonam khemani , Shyam Srinivasan , Gaurav Salunke , Maya Prasad , Chetan Dhamne , Badira C. Parambil , Akanksha Chichra , Venkata Rama Mohan Gollamudi , Irene Ruben Sunder , Nirmalya Roy Moulik , Gaurav Narula , Girish Chinnaswamy , Shripad Banavali

Background

Candida species are one of the leading causes of invasive fungal infections in pediatric patients with cancer, resulting in increased treatment related morbidity and mortality. There is limited data with respect to demography and outcomes of candidemia among children with cancer, especially from lower-middle income countries.

Methods

In this retrospective observational study conducted over a 4-year Period (January-2017 to December-2021), children less than 15 years with cancer, treated at a tertiary oncology centre in India and diagnosed with candidemia were included. Data with respect to risk factors, species types, treatment, complications and mortality was gathered.

Results

One-hundred and ten children with candidemia were included. The most common underlying malignancy was acute leukemia seen in 72 (66%) patients. Seventy-five (68%) patients had neutropenia (<0.5 × 10^9/L) at the time of diagnosis of candidemia. In addition, 35 (32%) and 34 (30%) patients had prolonged exposure to steroids and antibiotics respectively. Non-albicans Candida species was isolated in majority (90%) of the cases. Fifty-seven patients required some form of modification of therapy for underlying malignancy. The 30-day mortality of the entire cohort was 36% and was 73% for patients admitted to the intensive care unit. On multivariate analysis, only prolonged use of antibiotics [odds ratio: 2.7(1.1-6.7); p = 0.027] was found to be significantly associated with worse 30-day mortality.

Conclusion

The present study highlights the burden of candidemia among children with cancer. Despite prompt therapy, our cohort experienced increased mortality, primarily associated with prolonged antibiotic usage. These findings reinforce the critical importance of strict adherence to infection control guidelines and prudent antibiotic stewardship practices to improve patient outcomes.
背景念珠菌是儿科癌症患者侵袭性真菌感染的主要原因之一,导致与治疗相关的发病率和死亡率增加。在这项为期 4 年(2017 年 1 月至 2021 年 12 月)的回顾性观察研究中,纳入了在印度一家三级肿瘤中心接受治疗并确诊患有念珠菌血症的 15 岁以下癌症患儿。收集了有关风险因素、种类、治疗、并发症和死亡率的数据。最常见的潜在恶性肿瘤是急性白血病,有 72 名(66%)患者。75名(68%)患者在确诊念珠菌病时患有中性粒细胞减少症(<0.5 × 10^9/L)。此外,35 名(32%)和 34 名(30%)患者分别长期接触类固醇和抗生素。大多数病例(90%)都分离出了非白色念珠菌。57名患者因潜在的恶性肿瘤而需要对治疗进行某种形式的调整。整个组群的 30 天死亡率为 36%,而入住重症监护室的患者死亡率为 73%。通过多变量分析,发现只有长期使用抗生素[几率比:2.7(1.1-6.7);p = 0.027]才与 30 天死亡率显著相关。本研究强调了癌症患儿念珠菌血症的负担。尽管治疗及时,但我们的队列中仍出现了死亡率升高的情况,这主要与长期使用抗生素有关。这些研究结果强化了严格遵守感染控制指南和谨慎使用抗生素以改善患者预后的重要性。
{"title":"Prevalence and outcome of candidemia among paediatric cancer patients: A single centre experience from India","authors":"Poonam khemani ,&nbsp;Shyam Srinivasan ,&nbsp;Gaurav Salunke ,&nbsp;Maya Prasad ,&nbsp;Chetan Dhamne ,&nbsp;Badira C. Parambil ,&nbsp;Akanksha Chichra ,&nbsp;Venkata Rama Mohan Gollamudi ,&nbsp;Irene Ruben Sunder ,&nbsp;Nirmalya Roy Moulik ,&nbsp;Gaurav Narula ,&nbsp;Girish Chinnaswamy ,&nbsp;Shripad Banavali","doi":"10.1016/j.mycmed.2024.101510","DOIUrl":"10.1016/j.mycmed.2024.101510","url":null,"abstract":"<div><h3>Background</h3><div>Candida species are one of the leading causes of invasive fungal infections in pediatric patients with cancer, resulting in increased treatment related morbidity and mortality. There is limited data with respect to demography and outcomes of candidemia among children with cancer, especially from lower-middle income countries.</div></div><div><h3>Methods</h3><div>In this retrospective observational study conducted over a 4-year Period (January-2017 to December-2021), children less than 15 years with cancer, treated at a tertiary oncology centre in India and diagnosed with candidemia were included. Data with respect to risk factors, species types, treatment, complications and mortality was gathered.</div></div><div><h3>Results</h3><div>One-hundred and ten children with candidemia were included. The most common underlying malignancy was acute leukemia seen in 72 (66%) patients. Seventy-five (68%) patients had neutropenia (&lt;0.5 × 10^9/L) at the time of diagnosis of candidemia. In addition, 35 (32%) and 34 (30%) patients had prolonged exposure to steroids and antibiotics respectively. Non-albicans Candida species was isolated in majority (90%) of the cases. Fifty-seven patients required some form of modification of therapy for underlying malignancy. The 30-day mortality of the entire cohort was 36% and was 73% for patients admitted to the intensive care unit. On multivariate analysis, only prolonged use of antibiotics [odds ratio: 2.7(1.1-6.7); p = 0.027] was found to be significantly associated with worse 30-day mortality.</div></div><div><h3>Conclusion</h3><div>The present study highlights the burden of candidemia among children with cancer. Despite prompt therapy, our cohort experienced increased mortality, primarily associated with prolonged antibiotic usage. These findings reinforce the critical importance of strict adherence to infection control guidelines and prudent antibiotic stewardship practices to improve patient outcomes.</div></div>","PeriodicalId":14824,"journal":{"name":"Journal de mycologie medicale","volume":"34 4","pages":"Article 101510"},"PeriodicalIF":2.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Journal de mycologie medicale
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