Abstract:
A carotene conjugate of the formula: ##STR1## where R.sup.1 is hydrogen or methyl; R.sup.2 is: ##STR2## R.sup.3, R.sup.4 and R.sup.5 are independently, hydrogen, methyl or ethyl; R.sup.6 and R.sup.7 are independently --R.sup.13, --OR , --C(R.sup.6)(O), --C(R.sup.16).sub.2 OR.sup.13, --CH.dbd.CHR.sup.13, or --(CH.sub.2)R.sup.14 ; R.sup.8 is --R.sup.13, --OR.sup.13, --C(R.sup.16)(O), --C(R.sup.16).sub.2 OR.sup.13, --CH.dbd.CHR.sup.13, or --(CH.sub.2)R.sup.14 or taken with R.sup.10 is .dbd.O; R.sup.9 is --R.sup.13, --OR.sup.13, --C(R.sup.16)(O), --C(R.sup.16).sub.2 OR.sup.13, --CH.dbd.CHR.sup.13, or --(CH.sub.2)R.sup.14 or taken with R.sup.10 is a chemical bond; R.sup.10 is --R.sup.13, --OR.sup.13, --C(R.sup.16)(O) , --C(R.sup.16).sub.2 OR.sup.13, --CH.dbd.CHR.sup.13, or --(CH.sub.2)R.sup.14 or taken together with R.sup.9 is a chemical bond or taken with R.sup.8 is .dbd.O; R.sup.11 is R.sup.13, or --OR.sup.13 ; R.sup.12 is --C(R.sup.13).sub.2 C(Y)--, --C(O)O(O)C--, --C(NR.sup.13)O(O)C--, or --C(O)N(R.sup.15)--C(O)--; R.sup.13 is, independently at each occurrence, hydrogen or lower alkyl of from 1 through about 10 carbon atoms; R.sup.14 is an amino acid residue, R.sup.15 is --R.sup.13, --R.sup.14, or --C(O)NHR.sup.13 ; R.sup.16 is, independently at each occurrence, hydrogen or lower alkyl of 1 to about 4 carbon atoms and Y is .dbd.O, .dbd.S, or 2H--.
Abstract:
Novel photosensitizers related to rhodoporphyrins and phylloerythrin methyl ester, their preparation and use as photosensitizers for detection and treatment of tumors by photodynamic therapy. The novel photosensitizers accumulate and concentrate preferentially in tumor tissue, have strong light absorption in the 650 to 700 nm region and have reduced skin phototoxicity.
Abstract:
Pyropheophorbide compounds are injected into a host and accumulate in tumor tissue to a higher degree than surrounding normal tissues. When the pyropheophorbide compounds are exposed to a particular wavelength of light the compounds become cytotoxic and destroy the tumor or diseased tissue without causing irreversible normal tissue damage. The pyropheophorbide compounds have shown improved results as compared to drugs currently used in photodynamic therapy. Further, they absorb light further in the red, optimizing tissue penetration and are retained in the skin for short time periods relative to other drugs used in photodynamic therapy.
Abstract:
A method for treatment of esophageal high grade dysplasia comprising the steps of: injecting HPPH in a physiologically compatible medium into a patient having high grade dysplasia tissue to provide a dose level of 3 through 5 mg/m2 of body surface area, waiting for a time period of 24 through 60 hours to permit preferential absorption of the HPPH into esophageal cancer tissue, and exposing the esophageal cancer tissue to light at a wavelength of about 670±5 nm at an energy of from about 75 to about 200 Joules/cm.
Abstract translation:一种治疗食管高级别发育不良的方法,包括以下步骤:将HPPH在生理相容性培养基中注入具有高度发育不良组织的患者,以提供3至5mg / m 2的体表面积的剂量水平,等待一段时间 时间为24至60小时,以允许优先吸收HPPH进入食管癌组织,并以约75至约200焦耳/厘米的能量将食管癌组织暴露于波长约670±5nm的光。
Abstract:
A compound comprising a chemical combination of a photodynamic tetra-pyrrolic compound with a plurality of radionuclide element atoms such that the compound may be used to enhance MR imaging and also be used as a photodynamic compound for use in photodynamic therapy to treat hyperproliferative tissue. The preferred compounds have the structural formula: where R1, R2, R2a R3, R3a R4, R5, R5a R6, R7, R7a, and R8 cumulatively contain at least two functional groups that will complex or combine with an MR imaging enhancing element or ion. The compound is intended to include such complexes and combinations and includes the use of such compounds for MR imaging and photodynamic therapy treatment of tumors and other hyperproliferative tissue.
Abstract:
Compositions that are a chemical combination of porphyrins, chlorins, bacteriochlorins, and related tetra-pyrrolic compounds with radioactive elements such as Technetium99, Gadolinium, Indium111 and radioactive iodine. When the element can form cations, the compound is usually a chelate with the porphyrin or chlorin structure. When the element forms anions, the compound is usually a direct chemical combination of the radioactive element into the porphyrin or chlorin structure. The invention further includes the method of using the compounds of the invention for diagnostic imaging of hyperproliferative tissue such as tumors and new blood vessel growth as is associated with the wet form of age related macular degeneration and methods of making the compounds. Compounds for MRI contrast imaging of the invention are usually Tc99, In111 or Gd(III) complexes of compounds of the formula:
Abstract:
Compounds having properties superior to known photosensitizers defined by the following chemical formula: ##STR1## including R groups R.sup.1, R.sup.2, R.sup.3, and R.sup.4, wherein R.sup.1 and R.sup.2 are methyl or --CH(O--(CH.sub.2).sub.n CH.sub.3)CH.sub.3 or are joined together to form the group D and wherein R.sup.3 and R.sup.4 are methyl or --CH(O--(CH.sub.2).sub.n CH.sub.3)CH.sub.3 or are joined together to form the group D; provided that one of R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 are joined together to form the group D wherein one of the remaining R groups is methyl and one of the remaining R groups is --CH(O--(CH.sub.2).sub.n CH.sub.3)CH.sub.3, where n is an integer of 5 through 7 and group D is: ##STR2## and R.sub.5 is independently at each occurrence --OR.sub.6 where R.sub.6 is lower alkyl of 1 through 7 carbon atoms or R.sub.6 is an amino acid residue.
Abstract:
Pure dimer and trimer compounds of hematoporphyrin are prepared and shown to be effective agents in photodynamic therapy. The compounds of the invention are of the formula ##STR1## wherein each X is independently 1-hydroxyethyl or vinyl and wherein R is H or lower alkyl. The compounds of the invention can be conjugated to targeting substances such as immunoglobulins or to labels.
Abstract:
Provided herein are compounds for detection, diagnosis and treatment of target tissues or target compositions, including hyperproliferative tissues such as tumors, using photodynamic methods. In particular, photosensitizer compounds that collect in hyperproliferative tissue are provided. In another embodiment, compounds that absorb light at a wavelength of from about 700 to about 850 nm are provided. In a further embodiment, compounds that are detectable by magnetic resonance imaging are provided.
Abstract:
Conjugate are formed by covalently linking a target-specific compound to pyropheophorbide compound which conjugated are injected into a host and accumulate in tumor tissue to a higher degree than surrounding normal tissues. When the pyropheophorbide compound component of the conjugate is exposed to a particular wavelength of light the compound becomes cytotoxic destroying the tumor or diseased tissue without causing irreversible normal tissue damage. The pyropheophorbide compounds have been shown to have a variety of characteristics when used in photodynamic therapy. These characteristics are further improved when the compounds are bound to a target specific component such as a ligand capable of binding to a specific cellular receptor (e.g. growth hormones and growth factors) or an antibody capable of binding to a particular antigen.