Disclosed herein are methods of controlling a composition of M1/M2 macrophages in a wound of a subject. The method can include applying an electrospun structure to the wound, wherein the electrospun structure comprises a polymer, wherein the polymer comprises an alpha-hydroxy acid, and keeping the electrospun structure on the wound for a time period. The presence of the electrospun structure on the wound causes an increase in presence of M2 macrophages relative to M1 macrophages, which can, in turn, promote healing of the wound.

The particle (1) is suitable for the manufacture of an implantable soft tissue engineering material and comprises: a three-dimensionally warped and branched sheet (2) where (i) the three-dimensionally warped and branched sheet (2) is made from a biocompatible material having a Young's modulus of 1 kPa to 1 GPa; (ii) the three-dimensionally warped and branched sheet (2) has an irregular shape which is encompassed in a virtual three-dimensional envelope (3) having a volume V.sub.E; (iii) the three-dimensionally warped and branched sheet (2) has a mean sheet thickness T; iv) the three-dimensionally warped and branched sheet (2) has a volume V.sub.S; (v) the particle (1) has a Young's modulus of 100 Pa to 15 kPa; and (vi) the particle (1) further comprises a number of protrusions where the three-dimensionally warped and branched sheet (2) reaches the envelope (3); (vii) the particle (1) has a number of interconnected channel-type conduits (5) defined by the branching of the sheet (2) and/or by voids in the sheet (2); and (viii) where the conduits (5) have (a) a mean diameter D.sub.C; and (b) an anisotropicity index of 1.01 to 5.00.

Compositions including a first soft tissue-derived matrix and a second soft tissue-derived matrix are provided, as well as methods of making such compositions. In some embodiments, the composition comprises dilapidated, decellularized adipose tissue-derived matrix and dilapidated, decellularized fascial tissue-derived matrix, which may be combined in various proportions. Such adipose-fascia matrix compositions provide improved volume retention when implanted into a patient. The composition may further include exogenous cells or other substances, and/or a carrier. The composition is suitable for use in plastic surgery procedures, including reconstructive or cosmetic surgery procedures, as well as procedures for wound treatment and tissue regeneration. The methods for making the compositions may involve separation of first and second soft tissues from one another, followed by performing one or more treatments on the separated soft tissues, then combining the treated soft tissues and, optionally, performing one or more additional treatments on the combined soft tissues.

A method for controlling generation of biologically desirable voids in a composition placed in proximity to bone or other tissue in a patient by selecting at least one water-soluble inorganic material having a desired particle size and solubility, and mixing the water-soluble inorganic material with at least one poorly-water-soluble or biodegradable matrix material. The matrix material, after it is mixed with the water-soluble inorganic material, is placed into the patient in proximity to tissue so that the water-soluble inorganic material dissolves at a predetermined rate to generate biologically desirable voids in the matrix material into which bone or other tissue can then grow.

Provided herein are compositions comprising a composite of peptide amphiphiles and biocompatible particles and methods of use thereof for treatment of bone and/or tissue defects. In particular, compositions comprise a slurry paste of a peptide amphiphile nanofiber solution mixed with solid biocompatible particles, and find use in tissue/bone regeneration, growth factor delivery, and/or cell delivery.

The invention relates to a dermal filler composition in the form of a gel, comprising a carrier fluid comprising water and/or a polyalcohol; cross-linked hyaluronic acid; and spherical microparticles of cross-linked hyaluronic acid having an average diameter in the range of 10-200 μm. The filler provides a volumizing effect as well as a biostimulating effect when injected into skin tissue.

Disclosed is a wound treatment that includes collagen and a gelatin-reducing agent. Also disclosed is a wound dressing including a substrate, collagen, and a gelatin-reducing agent. The collagen and gelatin-reducing agent may be present in any suitable a weight ratio relative to one another, such as a weight ratio of about 0.25:1 to about 4:1 with respect to one another. Also disclosed is a method for promoting wound healing including administering collagen and a gelatin-reducing agent to a wound in need of treatment.

Compositions useful as dermal fillers and methods using such compositions to treat various skin and soft tissue conditions. The dermal fillers can comprise silk attached to hyaluronic acid using for example two cross linkers and can be used to treat of facial imperfections, facial defects, facial augmentations, breast imperfections, breast augmentations or breast reconstructions.

Methods and devices are provided for preparing and implanting tissue scaffolds. Various embodiments of scribing tools are provided that are configured to mark one or more predetermined shapes around a defect site in tissue. The shape or shapes marked in tissue can be used to cut a tissue scaffold having a shape that matches the shape or shapes marked in tissue. In one embodiment, the scribing tool used to mark a shape in tissue can also be used to cut the tissue scaffold.

The present disclosure relates to a polycaprolactone microsphere containing vitamin C, a filler including the same and a preparation method therefor. Provided is a polycaprolactone microsphere filler obtained by encapsulating vitamin C in polycaprolactone microspheres, which, when injected into a living body, exhibits a rapid collagen formation effect as well as a high tissue restoration property and maintains the effects for a long period of time, thereby showing excellent restoration or volume expansion or wrinkle improvement properties of soft tissues such as cheeks, breasts, nose, lips, and buttocks and reducing wrinkles.