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Infectious Disease: Aspergillus

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Total 48 results found since Jan 2013.

Kruppel-like factor 4 (KLF-4) plays a crucial role in simvastatin (SVT)-induced differentiation of rabbit articular chondrocytes.
This study indicates that KLF-4 plays critical role in SVT-caused chondrocytes differentiation. PMID: 29775609 [PubMed - as supplied by publisher]
Source: Biochemical and Biophysical Research communications - May 15, 2018 Category: Biochemistry Authors: Yu SM, Kim SJ Tags: Biochem Biophys Res Commun Source Type: research

TSLP-activated dendritic cells induce T helper type 2 inflammation in Aspergillus fumigatus keratitis.
Abstract Thymic stromal lymphopoietin (TSLP) is an IL-7-like cytokine, which is secreted by epithelial cells under the stimulation of Toll-like receptor (TLR) ligands. Dendritic cells (DCs) which express the thymic stromal lymphopoietin receptor (TSLPR) can be activated by TSLP. Mature DCs can express the OX40 ligand, which has the ability to combine with OX40 on the surface of T cells to stimulate T cell proliferation. TSLP secreted by corneal epithelial cells can engage in the process of T helper type 2 (Th2) inflammation in Aspergillus fumigatus keratitis, but the mechanism remains unclear. We demonstrated that...
Source: Experimental Eye Research - March 14, 2018 Category: Opthalmology Authors: Sun L, Chen C, Wu J, Dai C, Wu X Tags: Exp Eye Res Source Type: research

HMGB1 mediates Aspergillus fumigatus-induced inflammatory response in alveolar macrophages of COPD mice via activating MyD88/NF- κB and syk/PI3K signalings.
In conclusion, HMGB1 is responsible for A. fumigatus-induced inflammatory response in COPD alveolar macrophage via Dectin-1 and TLR2/4 receptor through activating MyD88/NF-κB and syk/PI3K signalings. PMID: 29078091 [PubMed - as supplied by publisher]
Source: International Immunopharmacology - October 24, 2017 Category: Allergy & Immunology Authors: Zhang P, Xin X, Fang L, Jiang H, Xu X, Su X, Shi Y Tags: Int Immunopharmacol Source Type: research

Dectin-1 is essential for IL-1 β production through JNK activation and apoptosis in Aspergillus fumigatus keratitis.
CONCLUSIONS: Being an important inflammatory PRR to mediate host inflammatory response, Dectin-1 induced IL-1β production is JNK dependent in mouse A. fumigatus keratitis, and suppressed apoptosis mediated anti-inflammatory response. PMID: 28926773 [PubMed - as supplied by publisher]
Source: International Immunopharmacology - September 16, 2017 Category: Allergy & Immunology Authors: Yuan K, Zhao G, Che C, Li C, Lin J, Zhu G, He K Tags: Int Immunopharmacol Source Type: research

Role of PTX3 in corneal epithelial innate immunity against Aspergillus fumigatus infection.
Abstract Pentraxin3 (PTX3), a member of long pentraxin family, plays a non-redundant role in human humoral innate immunity. However, whether PTX3 is expressed by corneal epithelial cells and its role during corneal fungi infection has not yet been investigated. To identify the presence of PTX3 in cornea, the possible mechanisms involved in its expression, and also the effects on corneal anti-fungi innate immune response, clinic human corneal tissues and cultured human corneal epithelial cells (HCECs) were resorted. PTX3 mRNA and protein were detected in corneal samples and cultured HCECs, which was significantly u...
Source: Experimental Eye Research - November 22, 2016 Category: Opthalmology Authors: Zhang J, Zhao G, Lin J, Che C, Li C, Jiang N, Hu L, Wang Q Tags: Exp Eye Res Source Type: research

Nek2 siRNA therapy using a portal venous port –catheter system for liver metastasis in pancreatic cancer
In this study, the overexpression of Nek2 was identified in pancreatic cancer cell lines. Nek2 siRNA inhibited tumor growth in a subcutaneous xenograft mouse model of pancreatic cancer, prolonged the survival time in an intraperitoneal xenograft mouse model and efficiently prevented the progression of liver metastasis using a portal venous port–catheter system. Taken together, Nek2 is an effective therapeutic target in pancreatic cancer. An adequate delivery system is considered important in treating advanced pancreatic cancer, such as peritoneal dissemination and liver metastasis. Further investigations are required on ...
Source: Cancer Science - August 11, 2016 Category: Cancer & Oncology Authors: Toshio Kokuryo, Shigeru Hibino, Kazushi Suzuki, Katsutaka Watanabe, Yukihiro Yokoyama, Masato Nagino, Takeshi Senga, Michinari Hamaguchi Tags: Original Article Source Type: research

Important factors mediates the adhesion of aspergillus fumigatus to alveolar epithelial cells with E-cadherin.
In conclusion, E-cadherin is a receptor for adhesion of A. fumigatus blastospores in epithelial cells. This may open a new approach to treat this fungal infection. PMID: 27347350 [PubMed]
Source: American Journal of Translational Research - June 29, 2016 Category: Research Tags: Am J Transl Res Source Type: research

Nek2 siRNA therapy using a portal venous port ‐catheter system for liver metastasis in pancreatic cancer
This article is protected by copyright. All rights reserved.
Source: Cancer Science - June 17, 2016 Category: Cancer & Oncology Authors: Toshio Kokuryo, Shigeru Hibino, Kazushi Suzuki, Katsutaka Watanabe, Yukihiro Yokoyama, Masato Nagino, Takeshi Senga, Michinari Hamaguchi Tags: Original Article Source Type: research

Nek2 siRNA therapy using a portal venous port‐catheter system for liver metastasis in pancreatic cancer
This article is protected by copyright. All rights reserved.
Source: Cancer Science - May 31, 2016 Category: Cancer & Oncology Authors: Toshio Kokuryo, Shigeru Hibino, Kazushi Suzuki, Katsutaka Watanabe, Yukihiro Yokoyama, Masato Nagino, Takeshi Senga, Michinari Hamaguchi Tags: Original Article Source Type: research

A potential link between TSLP/TSLPR/STAT5 and TLR2/MyD88/NFκB-p65 in human corneal epithelial cells for Aspergillus fumigatus tolerance
Publication date: March 2016 Source:Molecular Immunology, Volume 71 Author(s): Xiaoxiao Ren, Leyi Wang, Xinyi Wu Our previous studies reported that pattern recognition receptors (PRRs), including the cell surface Toll-like receptors (TLRs) and cytoplasmic NOD-like receptors (NLRs), recognize pathogen-associated molecular patterns (PAMPS) to initiate downstream signal cascades to active immunity responses. Thymic stromal lymphopoietin (TSLP) has recently emerged as a key cytokine in the development of type 2 adaptive immune responses. However, the crosstalk between PRRs and TSLP has not been well elucidated in Aspergil...
Source: Molecular Immunology - February 12, 2016 Category: Allergy & Immunology Source Type: research

Aspergillus fumigatus promotes T helper type 2 responses through thymic stromal lymphopoietin production by human corneal epithelial cells
ConclusionThese findings suggested that HCEC‐derived TSLP has a key role in adaptive immune responses of fungal keratitis via skewing Th2 differentiation and promoting humoral immunity. This article is protected by copyright. All rights reserved.
Source: Clinical and Experimental Ophthalmology - January 13, 2016 Category: Opthalmology Authors: Luping Wang, Leyi Wang, Xinyi Wu Tags: Original Article Source Type: research

Alternaria Induces Production of Thymic Stromal Lymphopoietin in Nasal Fibroblasts Through Toll-like Receptor 2.
CONCLUSIONS: The results of this study show that TSLP expression could be induced in nasal fibroblasts by exposure to Alternaria and that TLR2 may be involved in the process. The promotion of TSLP production in nasal fibroblasts by airborne fungi may facilitate the development or exacerbation of Th2-type nasal inflammation, especially in CRS with nasal polyps. PMID: 26540503 [PubMed]
Source: Allergy, Asthma and Immunology Research - November 7, 2015 Category: Allergy & Immunology Tags: Allergy Asthma Immunol Res Source Type: research

NLRP3 inflammasome is activated via phosphoinositide 3-kinase {delta} pathway in Aspergillus fumigatus-induced allergic airway inflammation
In this study, we focused on an association of NLRP3 inflammasome activation with PI3K- signaling in Aspergillus fumigatus (Af)-induced allergic lung inflammation. Using Af-exposed in vivo and in vitro experimental systems, we have investigated the role of PI3K- in the regulation of NLRP3 inflammasome activation in the pathogenesis of fungus-induced allergic lung inflammation.The protein expression of NLRP3, caspase-1, and IL-1bin lungs was significantly increased after the challenge in Af-sensitized and -challenged mice. Protein expression of NLRP3 and caspase-1 was also remarkably elevated in Af-stimulated cultured trach...
Source: European Respiratory Journal - October 30, 2015 Category: Respiratory Medicine Authors: Lee, Y. C., Kim, S. R., Lee, K. B., Park, H. J., Jeong, J. S. Tags: 5.3 Allergy and Immunology Source Type: research

cyp51A gene silencing using RNA interference in azole‐resistant Aspergillus fumigatus
Summary An increasing number of reports have described the emergence of acquired resistance of Aspergillus fumigatus to azole compounds. The primary mechanism of resistance in clinical isolates is the mutation of the azole drug target enzyme, which is encoded by the cyp51A gene. The aim of this study was to evaluate the impact of silencing the cyp51A gene in azole‐resistant A. fumigatus isolates. A 21‐nucleotide small‐interfering RNA (siRNA) was designed based on the cDNA sequence of the A. fumigatus cyp51A gene. After silencing the cyp51A gene in germinated conidia (15, 20, 25 and 50 nM), azole‐resistant A. fumiga...
Source: Mycoses - October 8, 2015 Category: Research Authors: Bita Mousavi, Mohammad T. Hedayati, Ladan Teimoori‐Toolabi, Jacques Guillot, Ahad Alizadeh, Hamid Badali Tags: Original Article Source Type: research

Hypoxia-inducible factor 1α modulates metabolic activity and cytokine release in anti-Aspergillus fumigatus immune responses initiated by human dendritic cells.
This study investigated the functional relevance of HIF-1α in the anti-A. fumigatus immune response initiated by human DCs. Hypoxic cell culture conditions were included because hypoxic microenvironments occur during A. fumigatus infections and may influence the host immune response. HIF-1α was stabilized in DCs following stimulation with A. fumigatus under normoxic and hypoxic conditions. This stabilization was partially dependent on dectin-1, the major receptor for A. fumigatus on human DCs. Using siRNA-based HIF-1α silencing combined with genome-wide transcriptional analysis, a modulatory effect of HIF-1α on the ant...
Source: International Journal of Medical Microbiology - September 16, 2015 Category: Microbiology Authors: Fliesser M, Morton CO, Bonin M, Ebel F, Hünniger K, Kurzai O, Einsele H, Löffler J Tags: Int J Med Microbiol Source Type: research