240 results about "Surgical resection" patented technology

The present disclosure describes methods and compositions for diagnosing or predicting likelihood of a OSCC recurrence in a subject having undergone OSCC resection comprising: a) determining an expression level of one or more biomarkers selected from Table 4, 5 and/or 7, optionally MMP1, COL4A1, THBS2 and/or P4HA2 in a test sample from the subject, the one or more biomarkers comprising at least one of THBS2 and P4HA2, and b) comparing the expression level of the one or more biomarkers with a control, wherein a difference or a similarity in the expression level of the one or more biomarkers between the test sample and the control is used to diagnose or predict the likelihood of OSCC recurrence in the subject In particular, the present disclosure describes methods and compositions using a four-gene biomarker signature that can predict recurrence of oral squamous cell carcinoma in subjects that have histologically normal surgical resection margins.

The present inventors have shown that the gene and protein expression profiles of ADAM8, ADAM10 and ADAM12 in different grades and stages of bladder cancer.

ADAM12 gene expression was evaluated in tumors from 96 patients with bladder cancer using a customized Affymetrix GeneChip. Gene expression in bladder cancer was validated using reverse transcription-polymerase chain reaction (RT-PCR), quantitative PCR, and in situ hybridization. Protein expression was evaluated by immunohistochemical staining on tissue arrays of bladder cancers.

The presence and relative amount of ADAM12 in the urine of cancer patients were determined by Western blotting and densitometric measurements, respectively.

Particularly ADAM12 mRNA expression was significantly upregulated in bladder cancer, as determined by microarray analysis, and the level of ADAM12 mRNA correlated with disease stage. ADAM12 protein expression correlated with tumor stage and grade. ADAM12 was present in higher levels in the urine from bladder cancer patients than in urine from healthy individuals. Significantly, following removal of tumor by surgery, in most bladder cancer cases examined the level of ADAM12 in the urine decreased and, upon recurrence of tumor, increased.

A device for preventing closure of a surgically created resection cavity within tissues of the body comprises an insertion member having a distal end for insertion into a surgically created resection cavity and a proximal end which remains outside the resection cavity and a lumen extending between the proximal and distal ends and an inflatable member deployable from the distal end of the insertion member, an inner chamber of the inflatable member being fluidly coupled to the lumen to receive an inflation fluid therefrom so that, when the inflation fluid is supplied to the inflatable member, the inflatable member expands so that an outer surface of the inflatable member contacts the surrounding tissue and moves the surrounding tissue out of the resection cavity. A method of treating tissue surrounding a surgically created resection cavity, comprises the steps of, after a portion of tissue has been surgically removed to create a resection cavity, inserting a distal end of a catheter into the resection cavity and deploying an inflatable element at a desired location within the resection cavity from a distal portion of the catheter in combination with the steps of inflating the inflatable element to contact inner surfaces of the resection cavity and maintain tissue surrounding the resection cavity in a position substantially corresponding to a position of the tissue prior to the creation of the resection cavity to prevent closure of the resection cavity by healing processes during a recovery period and, after the recovery period, treating the tissue surrounding the resection cavity.

The present invention provides novel genes and proteins for diagnosing pancreatic cancer and/or a likelihood for survival e.g., following surgical resection, wherein the expression of the genes and proteins is up-regulated or down-regulated. The pancreatic cancer-associated genes and proteins of the invention are specifically exemplified by the genes and proteins set forth in Tables 3 to 25 and the Sequence Listing.

A method and devices for localized delivery of a chemotherapeutic agent to solid tumors, wherein the agent does not cross the blood-brain barrier and is characterized by poor bioavailability and/or short half-lives in vivo, are described. The devices consist of reservoirs which release drug over an extended time period while at the same time preserving the bioactivity and bioavailability of the agent. In the most preferred embodiment, the device consists of biodegradable polymeric matrixes, although reservoirs can also be formulated from non-biodegradable polymers or reservoirs connected to implanted infusion pumps. The devices are implanted within or immediately adjacent the tumors to be treated or the site where they have been surgically removed. The examples demonstrate the efficacy of paclitaxel and camptothecin delivered in polymeric implants prepared by compression molding of biodegradable and non-biodegradable polymers, respectively. The results are highly statistically significant.

Colorectal cancer patients with operable tumors must decide whether to receive adjuvant therapy after surgical resection in order to reduce their chances of recurrence. Current clinical guidelines are crudely based on the stage of the disease, as well as a few other clinicopathologic features. The instant invention integrates data from these clinicopathologic features with data on multiple biomarkers using advanced informatic methods to provide a far more accurate prediction of recurrence than the current guidelines. The instant invention consists of a panel of biomarker assays plus an algorithm into which the scored biomarker data, as well as standard clinicopathologic data, is entered. A tumor sample from an individual patient is submitted for test, and an individualized report is produced with a prognostic score that accurately reflects the patient's risk of recurrence. This helps guide the patient and his/her oncologist in their choice of whether to receive adjuvant treatment. Low-risk patients are spared the unnecessary toxicities associated with cytotoxic treatments, and high-risk patients are given the best chance for a cure, maximizing both life expectancy and quality of life.

This present invention describes methods and compositions useful for the reconstruction of various soft tissue features such as lips, areola, and many other features by taking a mold of the skin feature to be replaced, such as the areola, prior to surgical resection, re-creating the size and shape of the soft tissue feature, for example, the nipple and areola, and making a polymer or biopolymer scaffold that is biocompatible, has the ability to allow the epithelization of the skin cells over the polymer, the capability of cell integration into the body of the scaffold, as well as the capability of infiltration of surrounding nerve fibers into the substance of the scaffold, so that the patient may have the benefit of a reconstructed soft tissue feature that not only has the same size and shape and appearance as the native tissue, but also has functional sensation.

A surgical organ resection device comprising a plurality of elongate electrodes for insertion into organ tissue, the electrodes being capable of operating in a bipolar manner, and an input for receiving a drive signal for driving the electrode, the elongate electrodes being arranged in a two-dimensional array and/or the device being arranged such that, in use, subsets of the elongate electrodes are driven in turn.

A compact and mobile gantry for 3-dimensional Application Specific Emission and/or Transmission Tomography (ASETT) imaging of the breast in single photon or coincidence emission modes, and single photon, or coincidence, or x-ray transmission modes. While the ASETT gantry was designed, built and evaluated for imaging metabolically active lesions in the pendant breast, it can also be used to image other organs and objects. This system overcomes physical constraints associated with imaging a pendulous breast in prone patients, while simultaneously satisfying sampling criteria for sufficient data collection in the pendulous breast reference frame. When combined with an offset cone-beam tomographic x-ray transmission imaging system, this dual modality ASETT system could provide simultaneous and coregistered structural and functional information about large or dense breasts, breasts with indeterminate x-ray mammography, and could also be used to accurately 3-dimensionally guide biopsy or surgical resection. Moreover, with the offset beam orientation, the transmission system is designed to have a variable FOV and minimize overall absorbed breast dose.

The invention belongs to the field of medicinal biotechnology, and in particular relates to a recombinant human Claudin18.2 tumor vaccine and a preparation method thereof. The invention aims to solve the problems of immunotherapy for stomach cancer, pancreatic cancer, esophagus cancer and metastatic and non-metastatic ovarian cancer, such as high after-excision recurrence rate, strong chemo-treatment and radiation treatment toxic side effect and high monoclonal antibody therapy cost. The invention adopts a technical proposal that the recombinant human Claudin18.2 tumor vaccine has a sequence of HMKSSQYIKANSKFIGEFDQWSTQDLYNNPVTAVFNYQGLWRSCVRESSGFTECRGYFTLLGLPAMLQAV. Animal experiments prove that rhClaudin18.2 fusion protein can induce high-titre neutralizing antibody in the bodies of tumor-bearing mice by over 1:10,000; the antibody can be combined with human KATOIII and PANC-1 tumor cells and mouse stomach cancer MFC and pancreatic cancer MPC-83 cells; and the protein serving as a tumor vaccine can suppress the growth of the stomach cancer MFC and pancreatic cancer MPC-83 cells in the bodies of the mice.

A system and method for joint arthroplasty may utilize one or more scaffolds to help support an arthroplasty prosthesis for the joint. A natural or prosthetic articulating surface may first be removed from one of the bones of the joint. This may expose a resection surface. A target portion of the resection surface may be identified based on, for example, fit and function testing of the joint with a trial arthroplasty prosthesis in place on the resection surface. One or more scaffolds may be placed on the target portion, and bone cement may be positioned adjacent to the scaffold(s) to define a raised surface that provides better fit and/or function than that which would be obtained with placement on the recessed surface. The arthroplasty prosthesis may be secured to the raised surface through the use of the bone cement.

A method and system are provided for determining a condition of a selected region of tissue to facilitate the location of surgical resection margins. Electropotential and impedance are measured at one or more locations in an area of the body where tissue is to be removed. An agent may be introduced into the region of tissue to enhance electrophysiological characteristics of that tissue. The condition of the tissue is measured by electropotential and impedance profile. Differences in the profile are used to determine the borders between normal and abnormal tissue so as to facilitate what tissue to resect. Methods and apparatus are also disclosed to determine the efficacy of various therapies.

The invention relates to a radionuclide-labelled biodegradable bioabsorbable biopolymer nano fibrous membrane, a preparation process and application thereof. The preparation process includes steps of firstly adopting the electrostatic spinning technique to prepare a biopolymer nano fibrous membrane consisting of biopolymer nano fibers with diameters ranging from 50nm to 5000nm, performing chemical modification on the surface of the biopolymer nano fibrous membrane, enabling the surface of the biopolymer nano fibrous membrane to be in coupling reaction with double-functional-group coupling agent, chelating the surface of the biopolymer nano fibrous membrane after coupling reaction in buffer solution of acetic acid-sodium acetate anhydrous containing radionuclide compounds, and finally obtaining the radionuclide-labelled biodegradable bioabsorbable biopolymer nano fibrous membrane, wherein the double-functional-group coupling agent which is combined with amino in biopolymer nano fibers via chemical bonds on the surface of the biopolymer nano fibrous membrane, the radionuclide is chelated and fixed on the surface of the biopolymer nano fibrous surface via the double-functional-group coupling agent. The radionuclide-labelled biodegradable bioabsorbable biopolymer nano fibrous membrane can be used as an oncotherapy material or a material for focal tissue portions after tumor resection operation.

Epicatechins, Epicatechin Oligomers, or Thiolated Epicatechins are applied (A) directly to a genital wart in the form of a cream, ointment, paste or solution, (B) directly to the genital wart wherein such cream, ointment, paste or solution contains as an additional active ingredient a skin permeabilizing agent, (C) following electrosurgical resection or removal of the genital wart in such form of a cream, ointment, paste or solution, (D) following chemical resection or extirpation of the genital wart in such form, (E) following surgical resection or removal of the genital wart in such form, wherein said Epicatechins, Epicatechin Oligomers, or Thiolated Epicatechins both provide antiviral activity against multiple strains of human papilloma virus (HPV) and promote healing following resection polymers contained in a vehicle. Disclosed are the compositions, therapeutical kits containing such composition, methods of treatment using such composition, and methods of enhancing the stability of such composition.

A method and device for applying a radioactive source to a tissue site is disclosed. The device facilitates the precise placement of, for example, ¹²⁵Iodine seeds relative to the surgical margin, assures the seeds remain fixed in their precise position for the duration of the treatment, overcomes the technical difficulties of manipulating the seeds through the narrow surgical incision, and reduces the radiation dose to the clinicians. The device incorporates the radioactive seeds into a fastening means, preferably surgical staples, used in the surgical procedure. In this way, the seeds are concurrently secured in position directly adjacent to the surgical resection and remain immobile.

A sustained-release gel injection comprises sustained-release microspheres containing taxanes drug, amphiphilic block copolymer, solvent and release regulator, wherein the mixture of the amphiphilic block copolymer and the solvent has a temperature sensitive gelatinization characteristic, and can automatically become non-flowing degradable water insoluble gel, which can locally and slowly release drug at tumor foci for several weeks to several months, after injection into body. The preparation can be injected into or around a tumor for treating solid tumors at different stages. The preparation has the effects of controlling residual tumor cells relapsed after operation and tumors that can not be excised via operation, controlling complications at late stage of tumors, and enhancing treatment effect of chemotherapy and radiotherapy (particularly radioactive particles). The taxanes are selected from docetaxel, taxol, epitaxol, hydroxyl taxol and deacetyltaxol; the amphiphilic block copolymer is PLGA-PEG-PLGA copolymer, wherein the PEG has molecular weight of 1200-1600, accounting for 20 wt% of the amphiphilic block copolymer; and in the glycolide-lactide copolymer, the mol ratio of glycolide and lactide is 6:1.