EP1993534A1 - Use of light-active indocyanine green for treating inflammatory disorders in the oral cavity - Google Patents
Use of light-active indocyanine green for treating inflammatory disorders in the oral cavityInfo
- Publication number
- EP1993534A1 EP1993534A1 EP07711778A EP07711778A EP1993534A1 EP 1993534 A1 EP1993534 A1 EP 1993534A1 EP 07711778 A EP07711778 A EP 07711778A EP 07711778 A EP07711778 A EP 07711778A EP 1993534 A1 EP1993534 A1 EP 1993534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light source
- substance
- oral cavity
- range
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
- A61K41/0057—Photodynamic therapy with a photosensitizer, i.e. agent able to produce reactive oxygen species upon exposure to light or radiation, e.g. UV or visible light; photocleavage of nucleic acids with an agent
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
Definitions
- the invention relates to a method for treating in particular inflammatory disease states in the oral cavity by introducing a substance which can be activated by a light source.
- Photodynamic therapy is understood to mean a photochemical process which has hitherto been used primarily in cancer therapy. By this term is generally understood a light-induced inactivation of cells, microorganisms or molecules. An active substance attaches to the cells to be controlled and is then activated by light
- a modification of this principle is used in the control of microorganisms - the "antimicrobial photodynamic therapy" (APT) .
- the aim is not the destruction of the body's own (tumor) cells, but the targeted control of local infections, the fight against microorganisms
- the APT is based on the selective staining of the microorganisms by a so-called photosensitizer and the destruction of the germs by exposure to a suitable, matched to the photosensitizer light source.
- a corresponding method is known from WO 01/87416 A1.
- the microorganisms With the aid of the light-activatable substance, in particular a dye, the microorganisms are sensitized and / or stained and killed after irradiation with light of suitable wavelength and energy density:
- the energy generated by means of an irradiation device, in particular a laser device is thus concentrated on the microorganisms and the equilibrium position reactions that occur in the unexposed state in the "normal" milieu are postponed and as a result the microorganisms are destroyed.
- EP 0 637 976 B1 discloses the use of a photosensitizing substance or compound or photosensitizer (PS) in the manufacture of a medicament for use in disinfecting or sterilizing tissues of the oral cavity or a wound or lesion in the oral cavity Destroying disease-related microbes in a periodontal pocket, known in the region between the tooth and the gums. This involves contacting the tissue, the wound or the lesion with the photosensitizer, with the microbes associated with the disease receiving the photosensitizer. Irradiation of the tissue, wound or lesion with laser light is performed at a wavelength absorbing by the photosensitizer.
- PS photosensitizing substance or compound or photosensitizer
- the germ reduction of this combined dye and laser treatment is for different germs and Photosensitizer described in the form of solutions with, inter alia, methylene blue and toluidine blue, further showing the influence of the applied energy density.
- the light sources used are HeNe lasers and GaAs lasers.
- the object of the present invention is to provide a method of the above-mentioned. To develop a type in which a suitable drug is used, which is especially after a short time no longer detectable.
- the substance contains the active ingredient indocyanine green and the spectrum of the light source emits significant proportions in the range of 700-1,000 nm.
- Indocyanine Green is an infrared dye used in medical diagnostics and used under the name IR 125 as a laser dye. It is used as an intravenous diagnostic agent with a broad spectrum in the cardiovascular, microcirculation and liver function diagnostics application and especially in the measurement in the eye or the retina.
- the main source of light is semiconductor lasers (diode lasers) or light emitting diodes (LEDs).
- the used Light sources should preferably emit light with a wavelength in the range between 780-830 nm.
- the output power of the light source is preferably in the range between 50 mW and 5,000 mW. This gives an irradiation dose of between 0.5 J-50 J at an exposure time of 10s-100s.
- the light source When applying the light, the light source should be pulsed in the range between 1,000 and 50,000 Hz, preferably in the range between 10,000 Hz and 20,000 Hz.
- the pause between two pulses may be longer than the pulse time.
- the substance is administered in sterile dosage form. Furthermore, the substance can be added to other ingredients that positively influence inflammatory processes.
- the substance in the form of a mouthwash solution remains in the oral cavity for a certain time and the exposure of the active substance to a light source takes place after rinsing out the active substance.
- the exposure of the drug is via a device that contains the light source and is worn temporarily (e.g., during a break or overnight).
- Another possibility is the introduction of the drug solution via a corresponding application device, such. a syringe in hard-to-reach areas, such as periodontal pockets or similar.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006011043A DE102006011043A1 (en) | 2006-03-08 | 2006-03-08 | Method for the treatment of, in particular, inflammatory disease states in the oral cavity |
PCT/EP2007/001867 WO2007101641A1 (en) | 2006-03-08 | 2007-03-05 | Use of light-active indocyanine green for treating inflammatory disorders in the oral cavity |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1993534A1 true EP1993534A1 (en) | 2008-11-26 |
Family
ID=38121752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711778A Ceased EP1993534A1 (en) | 2006-03-08 | 2007-03-05 | Use of light-active indocyanine green for treating inflammatory disorders in the oral cavity |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090156656A1 (en) |
EP (1) | EP1993534A1 (en) |
CA (1) | CA2645168A1 (en) |
DE (1) | DE102006011043A1 (en) |
WO (1) | WO2007101641A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011000020A1 (en) * | 2011-01-03 | 2012-07-05 | A.R.C. Laser Gmbh | Active substance containing indocyanine green and / or infracyanine green |
DE102011000715A1 (en) | 2011-02-14 | 2012-08-16 | Elexxion Ag | Active substance for the treatment of inflammatory disease states in the oral cavity |
DE102011055541A1 (en) | 2011-11-21 | 2013-05-23 | Elexxion Ag | Process for the treatment of humans and / or animals |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993021992A1 (en) * | 1992-04-30 | 1993-11-11 | Institute Of Dental Surgery | Laser treatment |
DE19610348A1 (en) * | 1996-03-15 | 1997-09-18 | Pulsion Verwaltungs Gmbh & Co | Treatment of tumours |
US6676655B2 (en) * | 1998-11-30 | 2004-01-13 | Light Bioscience L.L.C. | Low intensity light therapy for the manipulation of fibroblast, and fibroblast-derived mammalian cells and collagen |
US6944493B2 (en) * | 1999-09-10 | 2005-09-13 | Akora, Inc. | Indocyanine green (ICG) compositions and related methods of use |
US6551346B2 (en) * | 2000-05-17 | 2003-04-22 | Kent Crossley | Method and apparatus to prevent infections |
US7354448B2 (en) * | 2001-11-29 | 2008-04-08 | Palomar Medical Technologies, Inc. | Dental phototherapy methods and compositions |
US20090285766A1 (en) * | 2005-06-13 | 2009-11-19 | National University Of Singapore | Photosensitising Composition and Uses Thereof |
-
2006
- 2006-03-08 DE DE102006011043A patent/DE102006011043A1/en not_active Ceased
-
2007
- 2007-03-05 WO PCT/EP2007/001867 patent/WO2007101641A1/en active Application Filing
- 2007-03-05 EP EP07711778A patent/EP1993534A1/en not_active Ceased
- 2007-03-05 US US12/281,995 patent/US20090156656A1/en not_active Abandoned
- 2007-03-05 CA CA002645168A patent/CA2645168A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007101641A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2645168A1 (en) | 2007-09-13 |
US20090156656A1 (en) | 2009-06-18 |
WO2007101641A1 (en) | 2007-09-13 |
DE102006011043A1 (en) | 2007-09-20 |
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