34 results about "Fungal Infectious Disease" patented technology

The invention provides a paeonia plant extract and a preparation method and applications thereof. The extract is prepared from paeonia seed cases, wherein the content of total polyphenol is 40%-90%, and the total polyphenol contains stilbene ingredient. Proved by experiment research, the extract or drug composition thereof can be used for preventing or treating fungus infection diseases, virus infection disease, cancer and other diseases.

The invention provides a ketoconazole foaming agent and a preparation method thereof, which are used for treating fungal infective diseases, such as seborrheic dermatitis and the like.

Belonging to the field of biotechnology, the invention in particular relates to an amphotericin B polypeptide hydrogel drug carrier system for treatment of fungal infection. According to the invention, polypeptide hydrogel with great clinical application potential is employed for covalent binding of small molecule hydrophobic antibacterial drug amphotericin B to form the amphotericin B polypeptide hydrogel nano-drug carrier system. The prepared nano-drug carrier system has the characteristics of high drug loading capacity, high biocompatibility and high stability, at the same time has the advantages of sustained or controlled release of drugs, easy degradation of polypeptide carrier, reduced clinical toxic and side effects and obvious antifungal effect. The amphotericin B polypeptide hydrogel nano-drug carrier system can be stored and used in the form of amphotericin B polypeptide hydrogel nano-drug carrier system, also can be diluted with water for injection so as to be suitable for intravenous injection, or can be incorporated with other auxiliary materials to be prepared into tablets, pills, granules or capsules. The amphotericin B polypeptide hydrogel nano-drug carrier system provided by the invention is suitable for the antifungal and fungal infection disease treatment field, and has good application prospect.

The invention provides enzymolysis-resisting antibacterial peptide I9H12 as well as a preparation method and application thereof. A sequence of the antibacterial peptide I9H12 is shown as SEQ ID No. 1in a sequence table. The preparation method comprises the following steps: referring to the properties of amino acids; meanwhile, avoiding enzyme digestion sites of main proteinase in a body as muchas possible, and selecting hydrophobic amino acid isoleucine (Ile) and positive-charge amino acid histidine (His) as main amino acids to newly design the antibacterial peptide I9H12; carrying out amidation on a carboxyl terminal of the peptide to improve one positive charge and increase the stability of the peptide. The invention also provides the application of the antibacterial peptide to the preparation of targeting antibacterial medicines for treating gram-negative bacterium or fungus infectious diseases. According to the enzymolysis-resisting antibacterial peptide I9H12, the enzymolysis-resisting capability of the antibacterial peptide is effectively improved, and the application potential in actual production is improved.

The invention provides a derived peptide W8 based on amphibious frog-source antibacterial peptides and a preparation method and application of the derived peptide W8. The sequence of the derived peptide W8 is shown as SEQID No.1. The preparation method comprises the following steps of designing an antibacterial peptide P8 according to the amphibious frog-source antibacterial peptides, wherein thesequence of the designed antibacterial peptide P8 is showed as AARIILRPRFR, based on the sequence, enabling No. 8 proline to be assisted with an amino acid Trp, and designing the derived peptide W8 having the sequence shown as AARIILRWRFR. The invention provides an application of the derived peptide W8 to preparation of medicines for treating diseases infected with Gram-negative bacteria, gram-positive bacteria and fungi. The bacterium-restraining activity of the antibacterial peptide W8 is obviously higher than that of Kunitzin-RE, besides, the antibacterial peptide W8 has remarkable broad spectrum bacterium-restraining activity which is not possessed by the Kunitzin-RE, and the selectivity of the antibacterial peptide W8 between bacterium cells and lactation animal cells is improved.

The invention relates to application of formononetin in aspergillus fumigatus prevention. The technical scheme of the invention provides application of the formononetin in preparation of a fungus infectious disease medicament. The fungus is aspergillus fumigatus. The compound in the invention is high in antifungal activity to various funguses on both the superficial part and the deep part. Compared with the conventional clinically applied antifungal medicament, the formononetin has the advantages of high efficiency, low toxicity, large antifungal spectrum and the like and can be used for preparing antifungal medicaments.

A compound of the following chemical structure (I) which exhibits antifungal activity and is useful in treating and preventing fungal infectious diseases: 1

The invention relates to application of formononetin in trichophyton rubrum. The technical scheme of the invention is the application of formononetin in preparing medicaments for treating antifungal infected diseases, wherein the fungus is trichophyton rubrum. The compound has an excellent antifungal activity on various superficial and deep funguses, has the advantages of high activity, low toxicity, broad antifungal spectrum and the like when being compared with an antifungal medicament in existing clinical application, and can be used for preparing antifungal medicaments.

The invention discloses a non-specific receptor binding type fungus targeting antibacterial peptide, and a preparation method and application thereof. The sequence of the antibacterial peptide P19 isshown as SEQ ID No. 1. The preparation method comprises the following steps: statistically analyzing related structure function parameters of the antibacterial peptide with activity to bacteria or fungi in a natural antibacterial peptide library by using R language; comparing the related parameters; screening by using the high-frequency amino acid composition, the high-frequency charge number, thehydrophobicity and the structure characteristics of the antifungal antibacterial peptide to obtain the optimal amino acid composition; and comparing the antibacterial activity and strain selectivityof each peptide chain to obtain the antibacterial peptide P19 controlled by hydrophobicity and amphipathicity of the adjusted amino acid sequence. The antibacterial peptide is applied to the preparation of drugs for treating fungal infectious diseases. The antibacterial peptide only has a relatively strong killing effect on fungal strains, especially candida albicans, has no influence on other bacterial strains, and shows relatively accurate targeting specificity.

The invention relates to application of formononetin in cryptococcus neoformans. The technical scheme of the invention is the application of formononetin in preparing medicaments for treating antifungal infected diseases, wherein the fungus is cryptococcus neoformans. The compound has an excellent antifungal activity on various superficial and deep funguses, has the advantages of high activity, low toxicity, broad antifungal spectrum and the like when being compared with an antifungal medicament in existing clinical application, and can be used for preparing antifungal medicaments.

A polypeptide is isolated from Turmeric (Curcuma longa Linn) having molecular weight of about 8,000 Daltons. The polypeptide is highly water-soluble and absolutely non-toxic antioxidant, which is isolated using boiling water extraction. The polypeptide is an excellent antioxidant working at low concentration (of about 80 nM) to quench lipid peroxidation up to 90%. The polypeptide is highly effective against oxidative stress related diseases like arthritis, atherosclerosis, cardiovascular diseases, neurodegenerative diseases, cancer, cataract, malaria, bacterial and fungal infectious diseases.

The present invention provides a novel triazole compound represented by a general formula (I), an optical isomer, or a pharmaceutically acceptable salt thereof, a composition containing the novel triazole compound, and uses of the novel triazole compound. According to the present invention, the compound has excellent antifungal activity, such that the compound can be used for preparation of drugs for treatment of fungal infectious diseases, particularly deep infectious diseases caused by fungi. The general formula (I) is defined in the specification.

The invention discloses an antifungal composition as well as an external preparation and application thereof, and relates to the technical field of medicines. The composition is prepared from povidoneiodine and polyvinyl alcohol acetate. The pharmaceutical preparation is an external preparation, wherein the composition and the pharmaceutical preparation can be used for preparing medicines for treating fungal infectious diseases. Povidone iodine and polyvinyl alcohol acetate in the composition disclosed by the invention can generate an excellent synergistic bacteriostatic effect on various pathogenic fungi; so that the external preparation prepared from the composition can be used for effectively treating fungal infectious diseases such as fungal vaginitis.

It is an object of the present invention to provide an agent for enhancing phagocytosis ability, specifically an agent for enhancing phagocytosis ability that functions as a therapeutic agent or therapeutic adjunct for various bacterial infectious diseases, viral infectious diseases, fungal infectious diseases, parasitic infectious diseases, and mixed infectious diseases thereof by enhancing phagocytosis ability of neutrophils. The above-mentioned object is achieved by an agent for enhancing phagocytosis ability including HRG as an active ingredient. The inventors of the present invention have focused attention on the function of HRG on regulation of neutrophil activities, and as the result of extensive investigations, have newly found that HRG effectively enhances phagocytosis ability against a pathogen or foreign matter derived from bacteria, viruses, fungi, parasites, and the like among the neutrophil activities.

The invention relates to application of formononetin in antifungal medicaments. The technical scheme of the invention is the application of formononetin in preparing medicaments for treating antifungal infected diseases, wherein the fungus is candida parapsilosis. The compound has an excellent antifungal activity on various superficial and deep funguses, has the advantages of high activity, low toxicity, broad antifungal spectrum and the like when being compared with an antifungal medicament in existing clinical application, and can be used for preparing antifungal medicaments.

The invention relates to an organic sulfur compound substituted by a general formula (I), medicinal addition salt or ester or hydrate of the organic sulfur compound and a medical composition containing the compound, wherein R1, R2, S1, S2 and n are described as a specification. The invention also discloses a synthetic method and an application for preparing medicines which are used for treating bacterium and fungal infection diseases, neoplastic diseases and platelet aggregation diseases. The substituted organic sulfur compound has better functions for resisting tumors, infections and platelet aggregation and has higher application value in a medical field.

The invention discloses an antibacterial polypeptide Pb2-1 or PCL-1 and preparation method and application thereof.The amino acid sequences of the antibacterial polypeptides Pb2-1 and PCL-1 are as shown in SEQ ID NO:1 and SEQ ID NO:2 respectively. According to the antibacterial polypeptide Pb2-1 or PCL-1 and the preparation method and application thereof, based on polypeptide CATHPb2 from Python-bivittatu, through structure-fuction relationship studies, polypeptide Pb2-1 withhigh alpha-helix degree is obtained, the N-end is in covalent linkage withasection of eleven cyclopeptidehaving trypsininhibitory activity to obtain thenovel structure polypeptidePCL-1 consisting 24 amino acids. The prepared polypeptide Pb2-1 and PCL-1, the alpha-helix degree and hydrophobicityofan efficacy moduleareincreased; also, the PCL-1 is connected withthe eleven cyclopeptide sequence so that while good in vitro antibacterial activity is realized, the stability to trypsin is also significantly improved, and the polypeptide Pb2-1 and PCL-1 can be applied to the treatment of bacterial and fungal infectious diseases.

The invention discloses a novel use and a preparation method of human beta-defensin 3, and provides application of the human beta-defensin 3 in preparation of medicines for treating fungal, especiallyfilamentous fungal infectious diseases. The invention provides a preparation method of a recombinant human beta-defensin 3 polypeptide, wherein the preparation method comprises the following steps: inserting an HBD3 mature peptide gene into a pET32a(+) plasmid; transferring the correctly constructed recombinant plasmid into Escherichia coli to obtain expression engineering bacteria; inducing andculturing the expression engineering bacteria to express an HBD3 fusion protein; and finally obtaining the recombinant human beta-defensin 3 polypeptide by nickel affinity chromatography, thrombin digestion, purification and concentration. The invention proposes the novel use of the human beta-defensin 3. The preparation method provided by the invention has characteristics of low production cost,high yield and easy assurance of biological activity of the polypeptide.

The invention provides application of allicin in preparation of anti-saccharomycetes drugs, and relates to the technical field of medicines. Experiments show that the allicin has a good antibacterial effect on cryptococcus and candida, and the allicin combined with the antifungal drug also has good antibacterial activity on cryptococcus and candida. Experiments also show that allicin achieves a bacteriostatic or bactericidal effect by destroying capsules or cell walls or cell membranes of cryptococcus. The allicin has better activity against cryptococcus in vivo and in vitro. The allicin preparation can be used as a medicine which is safe, effective, small in toxic and side effects and low in price and is used for clinically treating fungal infectious diseases.