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Nickel and binary metal mixture responses in Daphnia magna: molecular fingerprints and (sub)organismal effects.

The recent development of a custom cDNA microarray platform for one of the standard organisms in aquatic toxicology, Daphnia magna, opened up new ways to mechanistic insights of toxicological responses. In this study, the mRNA expression of several genes and (sub)organismal responses (Cellular Energy Allocation, growth) were assayed after short-term waterborne metal exposure. Microarray analysis of Ni-exposed daphnids revealed several affected functional gene classes, of which the largest ones were involved in different metabolic processes (mainly protein and chitin related processes), cuticul

Characterization and overexpression of RHO1 from Cryptococcus laurentii ZJU10 activates CWI signaling pathway on enhancing the inhibition of blue mold on pears.

Results from this study explored the inhibitory effect of RHO1 gene (GenBank accession number KY859864) from the antagonistic yeast, Cryptococcus laurentii ZJU10, on the control of Penicillium expansum in pear fruit and its possible mechanism involved. The RHO1 gene was successfully cloned and overexpressed in Saccharomyces cerevisiae. Sequence analysis showed high similarity with Rho family proteins, implying a primary role of Rho1 in the cell wall integrity (CWI) signaling pathway. Gene expression of RHO1 and other five CWI-related genes (including Pkc1, Rlm1, Fks1, Fks2 and Chs3) were signi

Myosin-II proteins are involved in the growth, morphogenesis, and virulence of the human pathogenic fungus Mucor circinelloides.

Mucormycosis is an emerging lethal invasive fungal infection. The infection caused by fungi belonging to the order Mucorales has been report … myosin motors have been found in filamentous fungi, including myosin I, II, V, and fungus-specific chitin synthase with myosin motor domains. Our previous study on Mucor circinelloides, a common pathogen of mucormycosis, showed that the Myo5 protein (ID 51513) belonging to the myosin type V family had a critical impact on the growth and virulence of this fungus. …

Biochemical characterization of Paracoccidioides brasiliensis α-1,3-glucanase Agn1p, and its functionality by heterologous Expression in Schizosaccharomyces pombe.

α-1,3-Glucan is present as the outermost layer of the cell wall in the pathogenic yeastlike (Y) form of Paracoccidioides brasiliensis. Based on experimental evidence, this polysaccharide has been proposed as a fungal virulence factor. To degrade α-1,3-glucan and allow remodeling of the cell wall, α-1,3-glucanase is required. Therefore, the study of this enzyme, its encoding gene, and regulatory mechanisms, might be of interest to understand the morphogenesis and virulence process in this fungus. A single gene, orthologous to other fungal α-1,3-glucanase genes, was identified in the Paracoccidi

Genomic organization of duplicated major histocompatibility complex class I regions in Atlantic salmon (Salmo salar).

BACKGROUND: We have previously identified associations between major histocompatibility complex (MHC) class I and resistance towards bacteri … e Atlantic salmon IB region had an insert of 220 kb in comparison to the IA region containing three chitin synthase genes. CONCLUSION: We have characterized the gene organization of more than 500 kb of the two duplicated MHC class I regions in Atlantic salmon. Although Atlantic salmon and rainbow trout are closely related, the gene organization of their IB regio …

Efficacy of nikkomycin Z against experimental pulmonary blastomycosis.

Nikkomycin Z is a chitin synthetase inhibitor. In vitro, nikkomycin Z had good activity against Blastomyces dermatitidis, with an MIC of 0.78 microg/ml and a minimal fungicidal concentration of 3.1 microg/ml. The efficacies of various treatment durations (3, 5, or 10 days) and doses (200, 400, or 1,000 mg/kg of body weight) of nikkomycin Z given twice daily were compared with those of itraconazole at 200 mg/kg given twice daily and amphotericin B at 6.25 mg/kg in a murine model of pulmonary blastomycosis. All treatments prolonged survival compared with untreated controls (P < 0.05 to 0.01); 10

Phytolacca tetramera berries extracts and its main constituents as potentiators of antifungal drugs against Candida spp.

BACKGROUND: Extensive antifungal drug use has enhanced fungal resistance, resulting in persistent mycoses. Combining antifungal plant extrac … nin altered the fungal plasma membrane by binding to ergosterol, whereas phytolaccoside B increased chitin synthase activity. However, the presence of triterpenoid saponins in Phytolacca spp. has been linked to acute toxicity in humans. PURPOSE: This study aimed to evaluate combinations of P. tetramera berries extracts, phytolaccoside B and phytolaccagenin, toge …

Cell organisation, sulphur metabolism and ion transport-related genes are differentially expressed in Paracoccidioides brasiliensis mycelium and yeast cells.

BACKGROUND: Mycelium-to-yeast transition in the human host is essential for pathogenicity by the fungus Paracoccidioides brasiliensis and both cell types are therefore critical to the establishment of paracoccidioidomycosis (PCM), a systemic mycosis endemic to Latin America. The infected population is of about 10 million individuals, 2% of whom will eventually develop the disease. Previously, transcriptome analysis of mycelium and yeast cells resulted in the assembly of 6,022 sequence groups. Gene expression analysis, using both in silico EST subtraction and cDNA microarray, revealed genes tha

Mosquito population structure, pathogen surveillance and insecticide resistance monitoring in urban regions of Crete, Greece.

BACKGROUND: In Greece vector borne diseases (VBD) and foremost West Nile virus (WNV) pose an important threat to public health and the touri … V positive chicken preceded human WNV occurrence in the same region by approximately two weeks. The chitin synthase mutation I1043F (associated with high diflubenzuron resistance) was recorded at an 8% allelic frequency in Lasithi prefecture Cx. pipiens mosquitoes (sampled in 2020) for the first time in Greece. Markedly, Cx. pipiens populations in all four prefec …

Functional roles of ginger (Zingiber officinale) in strengthening the physiological responses, growth, antioxidant/immune gene expression, and resistance to Fusarium oxysporum in Red Tilapia (Oreochromis sp.): in vivo and in silico approaches.

The integration of natural molecules into aquaculture promotes sustainability by leveraging the fish's immune system to optimize health, pro … icated that the eight ginger-derived compounds were assessed for their inhibitory potential against chitin synthase enzyme (Chs3) in F. oxysporum, through molecular docking. Among them, [10]-Shogaol exhibited the highest binding affinity at -8.2 kcal/mol. Overall, DGP particularly at 10 or 15 g/kg, proved highly effective in enhancing red tilapia growth, blood he …

Molecular docking approaches in mycetoma: Toward improved patient management.

Mycetoma is a neglected tropical disease characterised by chronic, granulomatous inflammation of the subcutaneous tissues, often leading to … r pathogen survival and virulence, notably cytochrome P450 (CYP51), dihydrofolate reductase (DHFR), chitin synthase, melanin biosynthesis pathways, and metal ion acquisition systems. Melanin production, via DHN-melanin, DOPA-melanin, and pyomelanin pathways, contributes to grain pigmentation and structural integrity, while metal ions such as iron and zinc are vit …

First Report of Leaf Anthracnose on Dendrobium nobile Caused by Colletotrichum citricola in China.

Dendrobium nobile, a rare orchid in Orchidaceae, is a traditional Chinese medicinal herb known for its diverse biological activities, includ … Six gene regions were amplified: internal transcribed spacer (ITS), actin (ACT), calmodulin (CAL), chitin synthase (CHS), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and beta-tubulin 2 (TUB2). The following primer sets were used: ITS1/ITS4, ACT-512F/ACT-783R, CL1C/CL2C, CHS-79F/CHS-345R, GDF/GDR, and T1/Bt2b, respectively (Weir et al. 2012). The resulting …

First Report of Colletotrichum siamense Causing Anthracnose on Myrciaria dubia in Brazil.

Camu-camu (Myrciaria dubia (Kunth) McVaugh) is an Amazonian fruit with high economic potential due to its reported health-promoting properti … and pathogenicity analysis. Total DNA was extracted and portions of actin (ACT), calmodulin (CAL), chitin synthase 1 (CHS-1), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and β-tubulin 2 (TUB2) genes were amplified (Weir et al. 2012) and Sanger sequenced (GenBank accession numbers ACT: PV463490-PV463493; CAL: PV463498-PV463501; CHS-1: PV055675-PV055678; GAP …

Миксобактериальная реакция на воздействие метильясмоната свидетельствует о вкладе в набор микропрепараторов на заводы.

Химические обмены между растениями и микробами в пределах ризобиомы имеют решающее значение для развития общинной структуры. Такие летучие корневые экюды, как фитохормоновый метилжасмонат (MeJA), способствуют принятию различных мер реагирования в связи со стрессом на растения, и они были причастны к тому, чтобы играть определенную роль в поддержании микробных сообществ. Миксобактерия является компетентным хищником растительных патогенов и, как правило, считается полезной для ризобиомов. Хотя было предложено использовать миксобактерию растений для защиты от патогенов, не известно о каких-либо с

Совпадение в полном тексте источника
… Stigmatella aurantiaca fruiting body formation is dependent on the fbfA gene encoding a polypeptide homologous to chitin synthases. J. Bacteriol. 178 6706–6713. 10.1128/jb.178.23.6706-6713.1996 Vijayan P., Shockey J., Levesque C. A., Cook R. J., Browse J. (1998). …

Advanced Technologies for Large Scale Supply of Marine Drugs.

Marine organisms represent a source of unique chemical entities with valuable biomedical potentialities, broad diversity, and complexity. It is essential to ensure a reliable and sustainable supply of marine natural products (MNPs) for their translation into commercial drugs and other valuable products. From a structural point of view and with few exceptions, MNPs of pharmaceutical importance derive from the so-called secondary metabolism of marine organisms. When production strategies rely on marine macroorganisms, harvesting or culturing coupled with extraction procedures frequently remain t

Biomarkers in the diagnosis of lysosomal storage disorders: proteins, lipids, and inhibodies.

A biomarker is an analyte indicating the presence of a biological process linked to the clinical manifestations and outcome of a particular disease. In the case of lysosomal storage disorders (LSDs), primary and secondary accumulating metabolites or proteins specifically secreted by storage cells are good candidates for biomarkers. Clinical applications of biomarkers are found in improved diagnosis, monitoring disease progression, and assessing therapeutic correction. These are illustrated by reviewing the discovery and use of biomarkers for Gaucher disease and Fabry disease. In addition, rece

Biosynthesis of anticancer phytochemical compounds and their chemistry.

Cancer is a severe health issue, and cancer cases are rising yearly. New anticancer drugs have been developed as our understanding of the molecular mechanisms behind diverse solid tumors, and metastatic malignancies have increased. Plant-derived phytochemical compounds target different oncogenes, tumor suppressor genes, protein channels, immune cells, protein channels, and pumps, which have attracted much attention for treating cancer in preclinical studies. Despite the anticancer capabilities of these phytochemical compounds, systemic toxicity, medication resistance, and limited absorption re

Role of macrophages in the pathogenesis of atopic dermatitis.

Atopic dermatitis (AD) is one of the most common and most intensively studied chronic inflammatory skin diseases. Several cofactors, such as an impaired skin barrier function, modifications of the immune system, and a complex genetic background, direct the course of AD. Within this complex network, macrophages play a pivotal role in enhanced susceptibility to cutaneous infections and act as central connecting components in the pathogenesis of AD on the cellular level. In AD, macrophages are known to accumulate in acutely and chronically inflamed skin. During the early and short inflammatory ph

Читинас-3-подобный-1: многообразный игрок в нейроинфламмации и дегенеративной патологии с терапевтическими последствиями.

Читинас-3-подобный-1 (CHI3L1) — эволюционно сохранившийся белок, содержащийся в ключевых биологических процессах, включая реконструирование тканей, ангиогенез и нейроинфламмацию. Она стала важным игроком в различных нейродегенеративных заболеваниях и расстройствах мозга. Повышенные уровни CHI3L1 наблюдались в таких неврологических условиях, как травматическое повреждение мозга (TBI), болезнь Альцгеймера (AD), болезнь Паркинсона (PD), амиотропический боковой склероз (ALS), болезнь Креуцфельда-Якоба (CJD), множественный склероз (MS), оптика нейромиелита (NMO), вызванная ВИЧ деменция (HAD), цереб

Current Perspectives of the Applications of Polyphenols and Flavonoids in Cancer Therapy.

The development of anticancer therapies that involve natural drugs has undergone exponential growth in recent years. Among the natural compounds that produce beneficial effects on human health, polyphenols have shown potential therapeutic applications in cancer due to their protective functions in plants, their use as food additives, and their excellent antioxidant properties. The possibility of combining conventional drugs-which are usually more aggressive than natural compounds-with polyphenols offers very valuable advantages such as the building of more efficient anticancer therapies with l