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1.
Mycoses ; 67(6): e13751, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38825584

ABSTRACT

BACKGROUND: Kerion is a severe type of tinea capitis that is difficult to treat and remains a public health problem. OBJECTIVES: To evaluate the epidemiologic features and efficacy of different treatment schemes from real-world experience. METHODS: From 2019 to 2021, 316 patients diagnosed with kerion at 32 tertiary Chinese hospitals were enrolled. We analysed the data of each patient, including clinical characteristics, causative pathogens, treatments and outcomes. RESULTS: Preschool children were predominantly affected and were more likely to have zoophilic infection. The most common pathogen in China was Microsporum canis. Atopic dermatitis (AD), animal contact, endothrix infection and geophilic pathogens were linked with kerion occurrence. In terms of treatment, itraconazole was the most applied antifungal agent and reduced the time to mycological cure. A total of 22.5% of patients received systemic glucocorticoids simultaneously, which reduced the time to complete symptom relief. Furthermore, glucocorticoids combined with itraconazole had better treatment efficacy, with a higher rate and shorter time to achieving mycological cure. CONCLUSIONS: Kerion often affects preschoolers and leads to serious sequelae, with AD, animal contact, and endothrix infection as potential risk factors. Glucocorticoids, especially those combined with itraconazole, had better treatment efficacy.


Subject(s)
Antifungal Agents , Itraconazole , Microsporum , Tinea Capitis , Humans , Child, Preschool , Antifungal Agents/therapeutic use , Male , Female , Tinea Capitis/drug therapy , Tinea Capitis/epidemiology , Tinea Capitis/microbiology , Itraconazole/therapeutic use , China/epidemiology , Microsporum/isolation & purification , Child , Infant , Glucocorticoids/therapeutic use , Treatment Outcome , Dermatitis, Atopic/drug therapy , Dermatitis, Atopic/epidemiology , Dermatitis, Atopic/microbiology , Risk Factors , Adolescent , Adult , Middle Aged , Retrospective Studies
2.
Article in English | MEDLINE | ID: mdl-38730558

ABSTRACT

Cyclophilin B (CypB), a significant member of immunophilins family with peptidyl-prolyl cis-trans isomerase (PPIase) activity, is crucial for the growth and metabolism of prokaryotes and eukaryotes. Sporothrix globosa (S. globosa), a principal pathogen in the Sporothrix complex, causes sporotrichosis. Transcriptomic analysis identified the cypB gene as highly expressed in S. globosa. Our previous study demonstrated that the recombinant Escherichia coli strain containing SgcypB gene failed to produce sufficient product when it was induced to express the protein, implying the potential toxicity of recombinant protein to the bacterial host. Bioinformatics analysis revealed that SgCypB contains transmembrane peptides within the 52 amino acid residues at the N-terminus and 21 amino acids near the C-terminus, and 18 amino acid residues within the cytoplasm. AlphaFold2 predicted a SgCypB 3D structure in which there is an independent PPIase domain consisting of a spherical extracellular part. Hence, we chose to express the extracellular domain to yield high-level recombinant protein with PPIase activity. Finally, we successfully produced high-yield, truncated recombinant CypB protein from S. globosa (SgtrCypB) that retained characteristic PPIase activity without host bacterium toxicity. This study presents an alternative expression strategy for proteins toxic to prokaryotes, such as SgCypB. ONE-SENTENCE SUMMARY: The recombinant cyclophilin B protein of Sporothrix globosa was expressed successfully by retaining extracellular domain with peptidyl-prolyl cis-trans isomerase activity to avoid toxicity to the host bacterium.


Subject(s)
Cyclophilins , Escherichia coli , Recombinant Proteins , Sporothrix , Sporothrix/genetics , Sporothrix/enzymology , Sporothrix/drug effects , Sporothrix/metabolism , Cyclophilins/genetics , Cyclophilins/metabolism , Escherichia coli/genetics , Escherichia coli/metabolism , Recombinant Proteins/genetics , Recombinant Proteins/metabolism , Gene Expression , Computational Biology , Peptidylprolyl Isomerase/genetics , Peptidylprolyl Isomerase/metabolism
3.
PLoS One ; 19(5): e0299696, 2024.
Article in English | MEDLINE | ID: mdl-38728335

ABSTRACT

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused the COVID-19 disease, which represents a new life-threatening disaster. Regarding viral infection, many therapeutics have been investigated to alleviate the epidemiology such as vaccines and receptor decoys. However, the continuous mutating coronavirus, especially the variants of Delta and Omicron, are tended to invalidate the therapeutic biological product. Thus, it is necessary to develop molecular entities as broad-spectrum antiviral drugs. Coronavirus replication is controlled by the viral 3-chymotrypsin-like cysteine protease (3CLpro) enzyme, which is required for the virus's life cycle. In the cases of severe acute respiratory syndrome coronavirus (SARS-CoV) and middle east respiratory syndrome coronavirus (MERS-CoV), 3CLpro has been shown to be a promising therapeutic development target. Here we proposed an attention-based deep learning framework for molecular graphs and sequences, training from the BindingDB 3CLpro dataset (114,555 compounds). After construction of such model, we conducted large-scale screening the in vivo/vitro dataset (276,003 compounds) from Zinc Database and visualize the candidate compounds with attention score. geometric-based affinity prediction was employed for validation. Finally, we established a 3CLpro-specific deep learning framework, namely GraphDPI-3CL (AUROC: 0.958) achieved superior performance beyond the existing state of the art model and discovered 10 molecules with a high binding affinity of 3CLpro and superior binding mode.


Subject(s)
Antiviral Agents , COVID-19 Drug Treatment , Deep Learning , SARS-CoV-2 , SARS-CoV-2/drug effects , SARS-CoV-2/metabolism , SARS-CoV-2/genetics , Antiviral Agents/pharmacology , Antiviral Agents/therapeutic use , Humans , Coronavirus 3C Proteases/metabolism , Coronavirus 3C Proteases/antagonists & inhibitors , Protein Binding , COVID-19/virology , Molecular Docking Simulation
4.
BMC Genomics ; 23(1): 506, 2022 Jul 12.
Article in English | MEDLINE | ID: mdl-35831806

ABSTRACT

BACKGROUND: The genus Sporothrix belongs to the order Ophiostomatales and contains mainly saprobic soil and plant fungi, although pathogenic species capable of causing human infections are also present. The whole-genomes of disease-causing species have already been sequenced and annotated but no comprehensive genomic resources for environmental Sporothrix species are available, thus limiting our understanding of the evolutionary origin of virulence-related genes and pathogenicity. RESULT: The genome assembly of four environmental Sporothrix species resulted in genome size of ~ 30.9 Mbp in Sporothrix phasma, ~ 35 Mbp in S. curviconia, ~ 38.7 Mbp in S. protearum, and ~ 39 Mbp in S. variecibatus, with a variable gene content, ranging from 8142 (S. phasma) to 9502 (S. variecibatus). The analysis of mobile genetic elements showed significant differences in the content of transposable elements within the sequenced genomes, with the genome of S. phasma lacking several class I and class II transposons, compared to the other Sporothrix genomes investigated. Moreover, the comparative analysis of orthologous genes shared by clinical and environmental Sporothrix genomes revealed the presence of 3622 orthogroups shared by all species, whereas over 4200 genes were species-specific single-copy gene products. Carbohydrate-active enzyme analysis revealed a total of 2608 protein-coding genes containing single and/or multiple CAZy domains, resulting in no statistically significant differences among pathogenic and environmental species. Nevertheless, some families were not found in clinical species. Furthermore, for each sequenced Sporothrix species, the mitochondrial genomes was assembled in a single circular DNA molecule, ranging from 25,765 bp (S. variecibatus) to 58,395 bp (S. phasma). CONCLUSION: In this study, we present four annotated genome assemblies generated using PacBio SMRT sequencing data from four environmental species: S. curviconia, S. phasma, S. protearum and S. variecibatus with the aim to provide a starting point for future comparative genome evolution studies addressing species diversification, ecological/host adaptation and origin of pathogenic lineages within the genus Sporothrix.


Subject(s)
Genome, Mitochondrial , Sporothrix , Base Sequence , Humans , Phylogeny , Sequence Analysis, DNA , Sporothrix/genetics
5.
J Virol ; 96(1): e0125321, 2022 01 12.
Article in English | MEDLINE | ID: mdl-34586857

ABSTRACT

Over the past 20 years, the severe acute respiratory syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome CoV (MERS-CoV), and SARS-CoV-2 emerged, causing severe human respiratory diseases throughout the globe. Developing broad-spectrum drugs would be invaluable in responding to new, emerging coronaviruses and to address unmet urgent clinical needs. Main protease (Mpro; also known as 3CLpro) has a major role in the coronavirus life cycle and is one of the most important targets for anti-coronavirus agents. We show that a natural product, noncovalent inhibitor, shikonin, is a pan-main protease inhibitor of SARS-CoV-2, SARS-CoV, MERS-CoV, human coronavirus (HCoV)-HKU1, HCoV-NL63, and HCoV-229E with micromolar half maximal inhibitory concentration (IC50) values. Structures of the main protease of different coronavirus genus, SARS-CoV from the betacoronavirus genus and HCoV-NL63 from the alphacoronavirus genus, were determined by X-ray crystallography and revealed that the inhibitor interacts with key active site residues in a unique mode. The structure of the main protease inhibitor complex presents an opportunity to discover a novel series of broad-spectrum inhibitors. These data provide substantial evidence that shikonin and its derivatives may be effective against most coronaviruses as well as emerging coronaviruses of the future. Given the importance of the main protease for coronavirus therapeutic indication, insights from these studies should accelerate the development and design of safer and more effective antiviral agents. IMPORTANCE The current pandemic has created an urgent need for broad-spectrum inhibitors of SARS-CoV-2. The main protease is relatively conservative compared to the spike protein and, thus, is one of the most promising targets in developing anti-coronavirus agents. We solved the crystal structures of the main protease of SARS-CoV and HCoV-NL63 that bound to shikonin. The structures provide important insights, have broad implications for understanding the structural basis underlying enzyme activity, and can facilitate rational design of broad-spectrum anti-coronavirus ligands as new therapeutic agents.


Subject(s)
Antiviral Agents/chemistry , Coronavirus 3C Proteases/antagonists & inhibitors , Protease Inhibitors/chemistry , Catalytic Domain , Coronavirus/classification , Coronavirus/enzymology , Coronavirus 3C Proteases/chemistry , Crystallography, X-Ray , Molecular Docking Simulation , Naphthoquinones/chemistry , Protein Binding
6.
J Dermatolog Treat ; 33(1): 157-165, 2022 Feb.
Article in English | MEDLINE | ID: mdl-32066302

ABSTRACT

BACKGROUND: Atopic dermatitis (AD) is a chronic inflammatory disease associated with pruritus and sleep loss. Pine-tar has long been used for various chronic skin conditions in which its polycyclic aromatic hydrocarbon (PAH) component is anti-inflammatory and its resin acids antiseptic. The null hypothesis of this trial is that there is no difference in clinical efficacy between a pine-tar product and its vehicle for AD. METHODS: A 3-month, investigator-blinded, crossover, randomized control trial (RCT) was conducted in which each patient was assigned to bathing with pine-tar bath oil for one month and vehicle bath oil for another, with a washout period of 1-month in-between. Acceptability and efficacy of the bath products were measured. Disease severity scores (scoring atopic dermatitis (SCORAD) and patient-oriented eczema measure (POEM), quality of life questionnaires, noninvasive skin biophysiological measurements, blood IgE levels, and Staphylococcus aureus (SA) colonization status were assessed before and following bathing. RESULTS: Significant improvements were found in total SCORAD (p = .030), POEM (p = .004), SA colonization status (p = .002), and log-transformed IgE level (p = .009) among patients who bathed with pine-tar in the overall RCT study using intention-to-treat analysis. For per protocol analysis, significant improvements were found in total SCORAD (p = .024), objective SCORAD (p = .011), extent (p = .014), intensity (p = .032), pruritus (p = .047), POEM (p = .044), SA colonization status (p = .035), and log-transformed IgE level (p = .028). Acceptability to both bath-oils was good, and no product-related serious adverse events were recorded. CONCLUSIONS: Bathing with pine-tar is an efficacious and recommendable adjuvant practice for AD patients. Disease improvement is associated with reduction of SA and IgE.


Subject(s)
Dermatitis, Atopic , Eczema , Child , Dermatitis, Atopic/drug therapy , Eczema/drug therapy , Humans , Pruritus/etiology , Severity of Illness Index , Staphylococcus aureus
7.
BMC Microbiol ; 21(1): 190, 2021 06 25.
Article in English | MEDLINE | ID: mdl-34171998

ABSTRACT

BACKGROUND: Fungal cell wall polysaccharides maintain the integrity of fungi and interact with host immune cells. The immunomodulation of fungal polysaccharides has been demonstrated in previous studies. However, the effect of chitin-rich heteroglycan extracted from Sporothrix schenckii sensu stricto on the immune response has not been investigated. RESULTS: In this study, chitin-rich heteroglycan was extracted from S. schenckii sensu stricto, and immunomodulation was investigated via histopathological analysis of skin lesions in a mouse model of sporotrichosis and evaluation of the phagocytic function and cytokine secretion of macrophages in vitro. The results showed that the skin lesions regressed and granulomatous inflammation was reduced in infected mice within 5 weeks. Moreover, heteroglycan promoted the fungal phagocytosis by macrophages and modulated the cytokine secretion. Heteroglycan upregulated TNF-α expression early at 24 h and IL-12 expression late at 72 h after incubation, which might result from moderate activation of macrophages and contribute to the subsequent adaptive immune response. CONCLUSIONS: Chitin-rich heteroglycan extracted from S. schenckii sensu stricto potentiated fungal clearance in a mouse model of sporotrichosis. Moreover, chitin-rich heteroglycan promoted fungus phagocytosis by macrophages and modulated cytokines secretion. These results might indicate that chitin-rich heteroglycan could be considered as an immunomodulator used in the treatment of sporotrichosis.


Subject(s)
Macrophages/drug effects , Phagocytosis/drug effects , Polysaccharides/pharmacology , Polysaccharides/therapeutic use , Sporothrix/chemistry , Sporotrichosis/drug therapy , Animals , Chitin/chemistry , Chitin/pharmacology , Chitin/therapeutic use , Fungi/drug effects , Gene Expression Regulation/drug effects , Immunomodulating Agents/chemistry , Immunomodulating Agents/isolation & purification , Immunomodulating Agents/pharmacology , Immunomodulating Agents/therapeutic use , Mice , Polysaccharides/chemistry , Polysaccharides/isolation & purification
8.
Allergy Asthma Immunol Res ; 13(2): 177-205, 2021 Mar.
Article in English | MEDLINE | ID: mdl-33474855

ABSTRACT

The prevalence of allergic diseases has increased dramatically in recent years in China, affecting the quality of life in 40% of the population. The identification of allergens is the key to the diagnosis of allergic diseases. Presently, several methods of allergy diagnostics are available in China, but they have not been standardized. Additionally, cross-sensitization and co-sensitization make allergy diagnostics even more complicated. Based on 4 aspects of allergic disease (mechanism, diagnosis procedures, allergen detection in vivo and in vitro as well as the distribution map of the most important airborne allergens in China) and by referring to the consensus of the European Society of Allergy and Clinical Immunology, the World Allergy Organization, and the important literature on allergy diagnostics in China in recent years, we drafted this consensus of allergy diagnostics with Chinese characteristics. It aims to standardize the diagnostic methods of allergens and provides a reference for health care givers. The current document was prepared by a panel of experts from the main stream of professional allergy associations in China.

9.
Lasers Med Sci ; 36(1): 147-152, 2021 Feb.
Article in English | MEDLINE | ID: mdl-32557000

ABSTRACT

Onychomycosis is a fungal infection of the nail. The aim of this randomized controlled clinical trial was to compare the efficacy of 2940-nm Er:YAG laser treatment combined with a 5% amorolfine lacquer versus amorolfine monotherapy for treating onychomycosis. In this study, patients with onychomycosis of the great toenail were randomly assigned to a combination therapy group and a monotherapy group. In the combination therapy group, the included toenails were treated with a fractional 2940-nm Er:YAG laser at weeks 1, 2, 3, 4, 8, and 12, combined with a 5% amorolfine lacquer twice a week for 12 weeks, while in the monotherapy group, the included toenails were treated with only a 5% amorolfine lacquer twice a week for 12 weeks. The onychomycosis severity index (OSI) score and the mycological clearance rate (MCR) of the included toenails were assessed at baseline, week 12, and week 24. At weeks 12 and 24, the great toenails with mild and moderate onychomycosis in the combination therapy group showed obvious improvement and a greater decrease in OSI than those in the monotherapy group. At week 24, the toenails with mild and moderate onychomycosis in the combination therapy group also showed a better MCR. For the toenails with severe onychomycosis, little improvement was observed in either group at week 12 or week 24. In conclusion, fractional 2940-nm Er:YAG laser treatment combined with a 5% amorolfine lacquer is more effective than amorolfine monotherapy in short-term improvement of onychomycosis.


Subject(s)
Lacquer , Lasers, Solid-State/therapeutic use , Morpholines/therapeutic use , Onychomycosis/drug therapy , Onychomycosis/surgery , Adult , Antifungal Agents/pharmacology , Antifungal Agents/therapeutic use , Combined Modality Therapy , Female , Humans , Male , Morpholines/pharmacology , Nails/drug effects , Nails/microbiology , Patient Satisfaction , Treatment Outcome
10.
Mycoses ; 64(3): 245-251, 2021 Mar.
Article in English | MEDLINE | ID: mdl-33174310

ABSTRACT

BACKGROUND: Light microscopy to study the infection of fungi in skin specimens is time-consuming and requires automation. OBJECTIVE: We aimed to design and explore the application of an automated microscope for fungal detection in skin specimens. METHODS: An automated microscope was designed, and a deep learning model was selected. Skin, nail and hair samples were collected. The sensitivity and the specificity of the automated microscope for fungal detection were calculated by taking the results of human inspectors as the gold standard. RESULTS: An automated microscope was built, and an image processing model based on the ResNet-50 was trained. A total of 292 samples were collected including 236 skin samples, 50 nail samples and six hair samples. The sensitivities of the automated microscope for fungal detection in skin, nails and hair were 99.5%, 95.2% and 60%, respectively, and the specificities were 91.4%, 100% and 100%, respectively. CONCLUSION: The automated microscope we developed is as skilful as human inspectors for fungal detection in skin and nail samples; however, its performance in hair samples needs to be improved.


Subject(s)
Automation, Laboratory/instrumentation , Automation, Laboratory/methods , Deep Learning , Fungi/cytology , Microscopy/methods , Skin/microbiology , Hair/microbiology , Humans , Image Processing, Computer-Assisted/methods , Microscopy, Fluorescence , Nails/microbiology , Sensitivity and Specificity
11.
Microb Genom ; 6(10)2020 10.
Article in English | MEDLINE | ID: mdl-33034552

ABSTRACT

Sporothrix schenckii is a dimorphic fungus existing as mould in the environment and as yeast in the host. The morphological shift between mycelial/yeast phases is crucial for its virulence, but the transcriptional networks implicated in dimorphic transition are still not fully understood. Here, we report the global transcriptomic differences occurring between mould and yeast phases of S. schenckii, including changes in gene expression profiles associated with these distinct cellular phenotypes. Moreover, we also propose a new genome annotation, which reveals a more complex transcriptional architecture than previously assumed. Using RNA-seq, we identified a total of 17 307 genes, of which 11 217 were classified as protein-encoding genes, whereas 6090 were designated as non-coding RNAs (ncRNAs). Approximately ~71 % of all annotated genes were found to overlap and the different-strand overlapping type was the most common. Gene expression analysis revealed that 8795 genes were differentially regulated among yeast and mould forms. Differential gene expression was also observed for antisense ncRNAs overlapping neighbouring protein-encoding genes. The release of transcriptome-wide data and the establishment of the Sporothrix Genome DataBase (http://sporothrixgenomedatabase.unime.it) represent an important milestone for Sporothrix research, because they provide a strong basis for future studies on the molecular pathways involved in numerous biological processes.


Subject(s)
Gene Expression Profiling/methods , Genome, Fungal/genetics , Sporothrix/genetics , Transcriptome/genetics , Databases, Genetic , Genes, Fungal/genetics , High-Throughput Nucleotide Sequencing , Real-Time Polymerase Chain Reaction
12.
J Cosmet Dermatol ; 19(2): 368-374, 2020 Feb.
Article in English | MEDLINE | ID: mdl-31187937

ABSTRACT

BACKGROUND: Photodynamic therapy (PDT) with 5-aminolevulinic acid (ALA) has been described as an effective treatment for severe acne. However, very little evidence exists on the optimal concentration of ALA used in PDT for severe acne. OBJECTIVES: To compare the efficacy and safety of PDT with 5% ALA vs 10% ALA in severe acne. METHODS: Twenty-three patients with severe facial acne were randomly assigned to receive PDT with 5% ALA or 10% ALA on the left or right side of the face. Four PDT sessions were conducted with a light dose of 96 J/cm2 . The reduction rates of lesion counts between the two groups were compared at the week-4 and week-12 follow-up visits. Effective rate at the week-12 visit was the primary clinical outcome. Pain and other side effects were evaluated at each visit. RESULTS: The decrease in inflammatory lesions in the 10% ALA group was greater than that in the 5% ALA group at both week-4 (79.2% vs 62.5%, P = 0.009) and week-12 follow-up visits (88.5% vs 78.3%, P = 0.018), while the decrease in noninflammatory lesion counts between the two groups was not statistically significant at each follow-up visit. The effective rate in the 10% ALA group was significantly higher than that in the 5% ALA group (95.7% vs 69.6%, P = 0.02). No significant difference was observed in pain scores between the two groups except in the first treatment session. CONCLUSIONS: Photodynamic therapy using 10% ALA was more effective for severe acne than PDT using 5% ALA.


Subject(s)
Acne Vulgaris/drug therapy , Levulinic Acids/administration & dosage , Pain/diagnosis , Photochemotherapy/methods , Acne Vulgaris/diagnosis , Administration, Cutaneous , Adult , Dose-Response Relationship, Drug , Double-Blind Method , Face , Female , Follow-Up Studies , Gels , Humans , Levulinic Acids/adverse effects , Male , Pain/etiology , Pain Measurement , Photochemotherapy/adverse effects , Severity of Illness Index , Treatment Outcome , Young Adult , Aminolevulinic Acid
13.
Rev Inst Med Trop Sao Paulo ; 61: e31, 2019 Jun 19.
Article in English | MEDLINE | ID: mdl-31241660

ABSTRACT

Chromoblastomycosis is a chronic fungal infection. Itraconazole and terbinafine are the most recommended antifungal drugs for chromoblastomycosis, while amphotericin B is not usually recommended. A patient with chromoblastomycosis in our hospital showed poor clinical responses to itraconazole and terbinafine. The fungus isolated from the lesions of this patient was identified as Fonsecaea nubica and numbered zssy0803. In vitro antifungal susceptibilities of F. nubica zssy0803 to terbinafine, amphotericin B, itraconazole, voriconazole and caspofungin were evaluated, as well as the combinations of terbinafine with the other four antifungals. The combined effect of terbinafine and amphotericin B on other 20 clinical F. nubica strains was also evaluated. The minimal inhibitory concentrations of terbinafine, amphotericin B, itraconazole, voriconazole and caspofungin on F. nubica zssy0803 were 0.25 µg/mL, 2 µg/mL, 1 µg/mL, 4 µg/mL and 8 µg/mL, respectively. The combination of terbinafine and amphotericin B showed the lowest fractional inhibitory concentration index of 0.28 to F. nubica zssy0803 in comparison with combinations of terbinafine and the other four antifungal drugs. The combination of terbinafine and amphotericin B was also synergistic for all the other 20 F. nubica strains. Then, the combination of oral terbinafine (500 mg/day) and intralesional injections of amphotericin B (1 mg/mL) was used to treat this patient. After this combined therapy for 25 weeks and terbinafine monotherapy for additional 12 weeks, the patient was cured. These findings indicate for the first time that terbinafine and amphotericin B are synergistic in killing F. nubica both in vitro and in vivo.


Subject(s)
Amphotericin B/administration & dosage , Antifungal Agents/administration & dosage , Ascomycota/drug effects , Chromoblastomycosis/drug therapy , Terbinafine/administration & dosage , Ascomycota/isolation & purification , Drug Synergism , Drug Therapy, Combination , Female , Humans , Microbial Sensitivity Tests , Middle Aged
14.
Int Immunopharmacol ; 59: 347-353, 2018 Jun.
Article in English | MEDLINE | ID: mdl-29680745

ABSTRACT

Cyclophilin A (CyPA), ubiquitously existing in cytoplasm of all eukaryotes, can be secreted in response to inflammatory stimuli. Extracellular CyPA plays a prominent role in the pathological processes of inflammatory diseases, acting as a proinflammatory mediator, exerting chemotactic effects, promoting apoptosis of endothelial cells and amplifying ROS generation, thus being considered as a potential treatment target of sepsis, a systemic inflammatory response syndrome. Our previous study found that antibodies against cyclophilin A of Clonorchis sinensis (CsCyPA) could neutralize mouse cyclophilin A (MuCyPA). In this study, we explored whether CsCyPA immunization could prevent or ameliorate mice sepsis induced by cecum ligation puncture (CLP). The results showed that CsCyPA immunization could improve the 72 h survival rate of mice after CLP. Moreover, the protective effect presented in a titer-dependent manner. The levels of cytokine IL-1ß, IL-6, TNF-α, MCP-1 and AST in serum were remarkably decreased compared to CLP control group mice. Pathological damages of liver, lung and kidney were ameliorated accompanied by less inflammatory cell infiltration. CFU per whole peripheral blood at 12 h and 24 h after CLP surgery was significantly lower than that of CLP control group. In vitro, intracellular ROS generation and cytokine mRNA expression in peritoneal macrophages stimulated by LPS were reduced obviously with anti-CsCyPA antibodies (anti-CsCyPAs) preincubation. All these results demonstrated that CsCyPA immunization protected mice from CLP induced sepsis.


Subject(s)
Clonorchis sinensis , Cyclophilin A/immunology , Sepsis/therapy , Alanine Transaminase/blood , Animals , Antibodies/pharmacology , Aspartate Aminotransferases/blood , Bacterial Load , Cecum/surgery , Cytokines/blood , Cytokines/genetics , Immunization , Kidney/pathology , Ligation , Liver/pathology , Lung/pathology , Macrophages, Peritoneal/drug effects , Macrophages, Peritoneal/metabolism , Male , Mice, Inbred C57BL , Reactive Oxygen Species/metabolism , Sepsis/blood , Sepsis/microbiology , Sepsis/pathology
15.
Sci Rep ; 7(1): 9214, 2017 08 23.
Article in English | MEDLINE | ID: mdl-28835676

ABSTRACT

SLC10A1 codes for the sodium-taurocholate cotransporting polypeptide (NTCP), which is a hepatocellular transporter for bile acids (BAs) and the receptor for hepatitis B and D viruses. NTCP is also a target of multiple drugs. We aimed to evaluate the medical consequences of the loss of function mutation p.Ser267Phe in SLC10A1. We identified eight individuals with homozygous p.Ser267Phe mutation in SLC10A1 and followed up for 8-90 months. We compared their total serum BAs and 6 species of BAs with 170 wild-type and 107 heterozygous healthy individuals. We performed in-depth medical examinations and exome sequencing in the homozygous individuals. All homozygous individuals had persistent hypercholanemia (P = 5.8 × 10-29). Exome sequencing excluded the involvement of other BA metabolism-associated genes in the hypercholanemia. Although asymptomatic, all individuals had low vitamin D levels. Of six adults that were subjected to bone mineral density analysis, three presented with osteoporosis/osteopenia. Sex hormones and blood lipids were deviated in all subjects. Homozygosity of p.Ser267Phe in SLC10A1 is associated with asymptomatic hypercholanemia. Individuals with homozygous p.Ser267Phe in SLC10A1 are prone to vitamin D deficiency, deviated sex hormones and blood lipids. Surveillance of these parameters may also be needed in patients treated with drugs targeting NTCP.


Subject(s)
Alleles , Amino Acid Substitution , Homozygote , Hypercholesterolemia/blood , Hypercholesterolemia/genetics , Organic Anion Transporters, Sodium-Dependent/genetics , Precision Medicine , Symporters/genetics , Adolescent , Adult , Bile Acids and Salts/blood , Bile Acids and Salts/metabolism , Bone Density , Child , Female , Follow-Up Studies , Humans , Lipid Metabolism , Male , Middle Aged , Exome Sequencing , Young Adult
16.
Mycoses ; 60(3): 161-165, 2017 Mar.
Article in English | MEDLINE | ID: mdl-27618806

ABSTRACT

Onychomycosis is a rare nail disorder in early childhood, while onychomadesis is a periodic idiopathic, non-inflammatory disease that affects the nail matrix and is common in children especially in those who suffer from viral infections. In this study, we investigated recent cases of onychomycosis subsequent to periods of onychomadesis in children. Sixteen young children (six males, 10 females) with a mean age of 36.5 months were diagnosed with onychomadesis, and 13 of the patients had a history of viral infection prior to nail changes. Direct microscopy of nail scaling was positive in 11 cases (68.8%), and culture was positive in the same number of cases. Four Candida species were isolated: Candida glabrata was the most frequent, found in eight cases (72.7%), while C. albicans, C. parapsilosis and C. tropicalis, each were encountered in a single case. All children were treated successfully with or without topical bifonazole therapy.


Subject(s)
Candida/isolation & purification , Nail Diseases/complications , Nail Diseases/microbiology , Nails/microbiology , Onychomycosis/diagnosis , Onychomycosis/etiology , Administration, Topical , Antifungal Agents/therapeutic use , Candida/classification , Candida/drug effects , Candida/ultrastructure , Candida glabrata/drug effects , Candida glabrata/isolation & purification , Candida tropicalis/drug effects , Candida tropicalis/isolation & purification , Child , Child, Preschool , Female , Hand Dermatoses/drug therapy , Hand Dermatoses/microbiology , Humans , Imidazoles/therapeutic use , Infant , Male , Nails/pathology , Nails/ultrastructure , Onychomycosis/drug therapy , Onychomycosis/microbiology
17.
Genome Biol Evol ; 8(11): 3292-3296, 2016 12 14.
Article in English | MEDLINE | ID: mdl-27635048

ABSTRACT

Sporothrix globosa is a thermo-dimorphic fungus belonging to a pathogenic clade that also includes Sporothrix schenckii, which causes human and animal sporotrichosis. Here, we present the first genome assemblies of two S. globosa strains providing data for future comparative genomic studies in pathogenic Sporothrix species.


Subject(s)
Ascomycota/genetics , Genome, Fungal , Ascomycota/classification , Contig Mapping , Molecular Sequence Annotation , Phylogeny
18.
J Surg Res ; 203(2): 476-82, 2016 06 15.
Article in English | MEDLINE | ID: mdl-27363658

ABSTRACT

BACKGROUND: Cecal ligation and puncture (CLP) is the most commonly used model to simulate human polymicrobial sepsis. However, the severity of CLP is difficult to be standardized across different laboratories. The aim of the present study was to evaluate the influence of ligated cecal volume and length on mortality in mouse CLP model. METHODS: Cecal length and volume were measured from 120 Kunming mice subjected to CLP or sham operation. According to cecal volume, mice were divided into three groups, volume0.0∼0.2 (0.0 cm(3)-0.2 cm(3)), volume0.2∼0.4 (0.2 cm(3)-0.4 cm(3)), and volume>0.4 (larger than 0.4 cm(3)). The contents of cytokines, including interleukin-1ß, interleukin-6, and TNF-α, were measured at 3 h after surgery. The blood bacterial load and oxidative stress indicators (including malondialdehyde and superoxide dismutase) were measured at 12 h after surgery. RESULTS: There was no significant difference on 72-h survival rate between the mice with cecum longer than 2 cm and shorter than 2 cm. Compared to the other volume groups, volume>0.4 group showed significantly increased blood bacterial load, malondialdehyde levels in lung and liver, and pro-inflammatory cytokines in serum. Surprisingly, the survival rate in volume>0.4 (0%) group showed significant difference from those of volume0.0∼0.2 group (40%) and volume0.2∼0.4 group (40%). CONCLUSIONS: The mice in volume>0.4 group have much serious inflammatory reaction and are easier to die. As the proportion of volume>0.4 mice is near 20%, it can have large influence on most of the related studies using this CLP model.


Subject(s)
Cecum/anatomy & histology , Cecum/surgery , Disease Models, Animal , Mice/surgery , Sepsis/mortality , Animals , Biomarkers/metabolism , Ligation/methods , Male , Mice/anatomy & histology , Organ Size , Random Allocation , Sepsis/etiology , Sepsis/metabolism
19.
Lasers Med Sci ; 31(7): 1391-6, 2016 Sep.
Article in English | MEDLINE | ID: mdl-27339057

ABSTRACT

Onychomycosis remains difficult to cure by traditional methods. The aim of this study was to evaluate the efficacy of combination therapy with a fractional erbium yttrium aluminum garnet (Er:YAG) laser and 5 % amorolfine lacquer on onychomycosis. Nine patients with bilateral nails affected by distal and lateral subungual onychomycosis were included. The bilateral nails of each patient were divided into two groups. The 20 affected nails on one side of each patient as group 1 were treated with a fractional Er:YAG laser once a week and 5 % amorolfine lacquer twice weekly, while the 20 nails on the symmetrical side of each patient as group 2 were treated with amorolfine lacquer only. The laser treatment was conducted at weeks 1, 2, 3, 4, 8, and 12 in group 1. The clinical improvement, onychomycosis severity index (OSI), maximum linear clear nail growth (MLCNG), and mycological cure rate were evaluated. At week 24, 18 of 20 (90 %) nails in group 1 had achieved obvious clinical responses. The mean OSI score showed a significant decrease (5.24) and the average MLCNG was 3.1 mm in group 1. At week 24, 15 of 20 (75 %) nails achieved a negative mycological examination in group 1, compared with four of 20 (20 %) nails in group 2. The treatments were well-tolerated by most patients. This clinical study suggests that combination therapy of a fractional 2940-nm Er:YAG laser and 5 % amorolfine lacquer is an effective, safe, and convenient treatment method for onychomycosis.


Subject(s)
Antifungal Agents/therapeutic use , Lacquer , Lasers, Solid-State/therapeutic use , Morpholines/therapeutic use , Onychomycosis/radiotherapy , Adult , Aged , Aluminum , Combined Modality Therapy , Erbium , Female , Follow-Up Studies , Humans , Male , Middle Aged , Nails/growth & development , Nails/microbiology , Young Adult , Yttrium
20.
Genome Announc ; 4(2)2016 Mar 31.
Article in English | MEDLINE | ID: mdl-27034494

ABSTRACT

Sporothrix pallidais considered to be a mostly avirulent environmental fungus, phylogenetically closely related to the well-known pathogenSporothrix schenckii Here, we present the first assembly of its genome, which provides a valuable resource for future comparative genomic studies between nonpathogenic and pathogenicSporothrixspp.

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