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Methods and related compositions for the non-surgical removal of fat

a composition and fat technology, applied in the direction of drug compositions, biocides, metabolic disorders, etc., can solve the problems of shock or fluid accumulation that must be drained, perforation injury to vital organs, friction burns or other damage to skin or nerves,

Inactive Publication Date: 2006-07-13
RGT UNIV OF CALIFORNIA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a non-surgical method for removing localized fat deposits in patients using pharmacologically active detergents that do not contain phosphatidylcholine. The detergents work by reducing the activity of phosphatidylcholine, which is thought to be the active ingredient in previous formulations. The medical composition can contain additional active ingredients such as anti-inflammatory agents, analgesics, and dispersion agents. The method is safe and effective for the removal of localized fat deposits in patients, such as lipomas, lipodystrophy, and cellulite.

Problems solved by technology

However, liposuction and other surgical methods of fat removal are associated with significant adverse events including temporary bruising, swelling, numbness, soreness and burning sensation, risk of infection, pigmentation changes; the formation of fat clots or blood clots which can migrate to the lungs and cause death, excessive fluid loss, which can lead to shock or fluid accumulation that must be drained, friction burns or other damage to the skin or nerves or perforation injury to the vital organs.
Additionally, liposuction requires a recovery time of one to two weeks wherein the patient cannot work or perform certain daily activities.
Moreover, because surgical procedures such as liposuction require local and occasionally general anesthesia, significant anesthesia-related risks are associated with surgical fat removal.

Method used

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  • Methods and related compositions for the non-surgical removal of fat
  • Methods and related compositions for the non-surgical removal of fat
  • Methods and related compositions for the non-surgical removal of fat

Examples

Experimental program
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Effect test

example 1

Sodium Deoxycholate and Phosphatidylcholine Formulations

[0059] Phosphatidylcholine bile salt formulation (PBF) (5.0% highly purified soy derived PC, 4.75% sodium deoxycholate, and 0.9% benzyl alcohol, in sterile water, Table 1) was obtained from Hopewell Pharmacy, Hopewell, N.J. Sodium deoxycholate and Triton® X-100 detergent (Triton®, alkylaryl polyether alcohol) were obtained from Sigma-Aldrich Corp. (St. Louis, Mo.). Empigen® BB detergent (Empigen®, lauryldimethylbetaine, Calbiochem, Biosciences, Inc., La Jolla, Calif.). Stock reagents (5% dilutions) were prepared in PBS buffer.

[0060] The molecular structure of (a) phosphatidylcholine, (b) sodium deoxycholate and (c) benzyl alcohol are depicted in FIG. 1.

TABLE 1Injectable PBFPhosphatidylcholine5.00%(w / v)Sodium deoxycholate4.75%Benzyl alcohol0.90%Water100mL

example 2

Effects of Sodium Deoxycholate and Phosphatidylcholine Solutions in Cultured Cells

[0061] To measure cell viability after detergent treatment, HaCaT human keratinocyte cells were cultured in DMEM (Dulbecco's modified Eagle's medium) supplemented with 10% fetal calf serum, penicillin, and streptomycin. HaCaT cells were cultured in 6 well plates and incubated with 0%, 0.005%, 0.050% or 0.500% PBF (PC Formula) or sodium deoxycholate for 30 min at 37° C. prior to determination of cell viability using the MTS assay, which uses a tetrazolium compound that produces a color change when bioreduced by metabolically active cells (CellTiter 96® AQueous Non-Radioactive Cell Proliferation Assay, Promega, Corp. Madison, Wis.). Cell viability was determined by an absorbance spectrophotometer (at 490 nm) after a 4 hour incubation with the assay at 37° C. To determine cell viability in fresh tissue, fat specimens were incubated for 4 hours in 24 well plates with stock reagents and the MTS assay. Tiss...

example 3

Effects of Sodium Deoxycholate and Phosphatidylcholine Solutions in Porcine Tissue

[0063] Porcine tissue was obtained immediately after sacrifice, shaved, and placed on ice for a maximum of four hours before use. Fat specimens were obtained by removing the epidermis and dermis of a punch biopsy with a scalpel and trimmed. Fat specimens were loaded with calcein dye by incubating 1 hour at 37° C. with Calcein-AM (Sigma). Stock reagents were added to the fat specimens and incubated for 30 min at 37° C. with gentle agitation. Calcein retention was determined by tissue fluorescence using purple (411 nm) light and visually observing the emitted green (500 nm) light using an emission filters.

[0064] Histology was performed by injecting stock reagent solutions (0.5 mL) into full thickness porcine skin at various levels (epidermis, dermis, and subcutaneous tissue) with 1.0 mL syringes and 30-gauge, 0.5 inch needles. Needle depth was visualized along the margin of the porcine tissue with the ...

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Abstract

Compositions and methods useful in the non-surgical removal of localized fat deposits in patients in need thereof using pharmacologically active detergents are disclosed. The pharmacologically active detergent compositions can additionally include anti-inflammatory agents, analgesics, dispersion agents and pharmaceutically acceptable excipients but do not contain phosphotidylcholine. The pharmacologically active detergent compositions are useful for treating localized accumulations of fat including lower eyelid fat herniation, lipodystrophy and fat deposits associated with cellulite and do not require surgical procedures such as liposuction.

Description

RELATED APPLICATIONS [0001] The present application is a continuation of U.S. patent application Ser. No. 11 / 054,171, filed Feb. 8, 2005 which claims priority under 35 U.S.C. 119(e) to U.S. Provisional Application Ser. No. 60 / 572,879 filed May 19, 2004.FIELD OF THE INVENTION [0002] The present invention is related to compositions and methods useful for the non-surgical removal of localized fat accumulation. Specifically, the present invention is related to pharmacologically active detergent compositions than are suitable for injection directly into a treatment site of a patient in need of fat removal without the need for surgical intervention. BACKGROUND OF THE INVENTION [0003] Numbers appearing in parentheses at the end of a sentence refer to specific references cited at the conclusion of this specification immediately before the claims. [0004] Formulations containing phosphatidylcholine and bile salts (phosphatidylcholine bile salt formulations, PBF) are increasingly being utilize...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/56A61K31/205A61K31/575A61K31/765A61Q19/06
CPCA61K8/63A61K9/0019A61K31/575A61K45/06A61K2800/30A61K2800/91A61Q19/06A61K2300/00A61K31/685A61P3/00A61K9/127A61K31/765
Inventor KOLODNEY, MICHAEL S.ROTUNDA, ADAM M.
Owner RGT UNIV OF CALIFORNIA
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