210 results about "Chemotaxis" patented technology

A composition for promoting repair of damaged tissues, being a cross-linked alginate solution, which can be maintained in liquid form indefinitely (under constant conditions) and only gels in vivo. This cross-linked alginate solution is an ideal material to be used for tissue repair. Injection of said material into cardiac tissue post-myocardial infarct induced tissue regeneration. The invention provides such injectable solution, as well as compositions and method of preparation thereof. The invention also provides various methods and uses of the cross-linked alginate solution, for cardiac tissue regeneration, induction of neo-vascularization, enhancing SDF-1 expression and guiding stem cell chemotaxis, among others. A kit for tissue repair is also provided.

Compositions are provided that comprise antibody against membrane proteins such as chemokine receptors. In particular, monoclonal human antibodies against human CXCR4 are provided that are capable of inhibiting HIV infection and chemotaxis in human breast cancer cells. The antibodies can be used as prophylactics or therapeutics to prevent and treat HIV infection and cancer, for screening drugs, and for diagnosing diseases or conditions associated with interactions with chemokine receptors.

Novel activating receptors of the lg super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-β. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

Novel activating receptors of the Ig super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-β. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

The present invention is directed towards immunoglobulin polypeptides that specifically bind to the extracellular domain of the human type beta PDGF receptor. The binding of the immunoglobulin polypeptides to the receptor inhibits PDGF-induced (or stimulated) receptor activation as indicated by inhibition of receptor phosphorylation and dimerization, and by inhibition of PDGF-mediated mitogenesis, chemotaxis and migration of cells displaying the human PDGF type beta receptor on the cell surface. Nucleic acids encoding the immunoglobulin polypeptides are also included in the invention. The immunoglobulin polypeptides have diagnostic and therapeutic uses.

Novel activating receptors of the lg super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-β. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

Novel activating receptors of the Ig super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-β. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

The present invention discloses a device for monitoring chemotaxis or chemoinvasion. The present invention further provides a flexible assay system and numerous assays that can be used to test biological interactions and systems. Laminar flow gradients are employed that mimic gradient situations present in vivo.

Compositions are provided that comprise antibody against membrane proteins such as chemokine receptors. In particular, monoclonal human antibodies against human CXCR4 are provided that are capable of inhibiting HIV infection and chemotaxis in human breast cancer cells. The antibodies can be used as prophylactics or therapeutics to prevent and treat HIV infection and cancer, for screening drugs, and for diagnosing diseases or conditions associated with interactions with chemokine receptors.

Novel activating receptors of the Ig super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-beta. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

The invention discloses a container quay berth and quay crane distribution method based on a bacterial foraging optimization method. The method comprises the following steps: initializing and defining a solution space; defining a fitness function; randomly initializing the position and the speed of bacteria and selecting out the local and global optimal positions; allowing the bacteria to move in the solution space and performing chemotaxis circulation; after the chemotaxis times reach the set times, reproducing a certain proportion of individuals with high adaptive value to replace individuals with low adaptive value; performing cloning immunization on the individuals after reproduction; after the reproduction times reach the set times, performing individual migration; circulating. The invention has the benefits that the method is different from other single methods, is a new mixed algorithm combining a bacterial foraging algorithm, a particle swarm optimization, a cloning immunization algorithm and a variable field searching method, and has the advantages of the four algorithms. Through the adoption of the method, the efficiency of a wharf can be improved, resources are distributed reasonably, the congestion phenomenon is avoided, the information transfer time is shortened and the error rate of operation is reduced.

(R,S)-2-Aryl-propionic acids are useful as inhibitors of interleukin-8 induced human polymorphonucleated neutrophils (PMN) chemotaxis. (R,S)-2-Aryl-propionic acids of formula (I), their single (R) and (S) enantiomers or salts are useful as inhibitors of interleukin-8 (IL-8) induced human polymorphonucleated neutrophils (PMN) chemotaxis. [Image] Ar : phenyl ring (substituted by T in meta position, T1 in para position or T2 in ortho position); T : linear or branched 1-5C alkyl, 2-5C alkenyl, or 2-5C alkynyl (optionally substituted by 1-5C alkoxycarbonyl, optionally substituted phenyl, linear or branched 1-5C hydroxyalkyl or arylhydroxymethyl); T1benzoyloxy, benzoylamino, benzenesulfonyloxy, benzenesulfonylamino, benzenesulfonylmethyl (all optionally substituted), 1-5C acyloxy, 1-5C acylamino, 1-5C sulfonyloxy, 1-5C alkanesulfonylamino, 1-5C alkanesulfonylmethyl, 3-6C cycloalkyl, 2-furyl, 3-tetrahydrofuryl, 2- thiophenyl, 2-tetrahydrothiophenyl or ((1-8C)-alkanoyl, -cycloalkanoyl or -arylalkanoyl)-1-5C-alkylamino (preferably acetyl-N-methyl-amino or pivaloyl-N-ethyl-amino); and T2arylmethyl, aryloxy or acylamino (all optionally substituted by 1-4C alkyl, 1-4C-alkoxy, chlorine, fluorine or trifluoromethyl). The meta linear or branched 1-5C alkyl together with a substituent in ortho or para position and the benzene ring forms optionally saturated or optionally substituted bicyclo aryls. INDEPENDENT CLAIM are included for the following: (1) preparation of (I); and (2) use of (I) in the preparation of a medicament for the treatment of e.g. psoriasis, ulcerative colitis, melanoma and chronic obstructive pulmonary disease (COPD). - ACTIVITY : Antipsoriatic; Antiulcer; Respiratory-Gen.; Antirheumatic; Antiarthritic; Nephrotropic; Vasotropic; Antiinflammatory; Gastrointestinal-Gen.; Cytostatic. - MECHANISM OF ACTION : Interleukin-8 (IL-8) inhibitor; GROalpha inhibitor; CXCR2 agonist / antagonist. The ability of (R,S) 2-[(3'-isopropyl)phenyl]propionic acid (A) to inhibit IL-8 induced chemotaxis of human monocytes was tested as described in Van Damme J. et al. (Eur. J. Immunol., 19, 2367, 1989). (A) showed inhibition (%) of 51+-12.

The invention discloses a high ferro and low frequency oscillation suppression method based on sliding mode control, comprising the steps of defining grid-side current orthogonal and establishing a state space model of a motor-car networking side rectifier under a dq rotating coordinate; selecting the output of a control system with the combination of a control object, and establishing two sliding-mode surfaces based on outer-ring voltage control, and obtaining a reference value of grid-side reactive component of current, and completing the calculating of a sliding-mode surface expression; selecting sliding mode control tendency rate for the two sliding mode surfaces, and substituting the two sliding mode surfaces into the sliding mode control tendency rate, and substituting the result into the state space model of a motor-car networking side rectifier under the dq rotating coordinate, obtaining a switch function, and multiplying the switch function with DC side voltage, obtaining control voltage; obtaining an Alfa Belta coordinate system component through the coordinate transformation of control voltage, and outputting control impulse through sine pulse width modulation. The invention is advantageous in that dynamic response and robustness of the rectifier can be effectively improved, and the low frequency oscillation of motor-car electrical quantities can be suppressed.