NMR diagnosis

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					NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY

-an ideal tool for Diagnosis &
Drug Design

B. HASEENA BANU
Asst.Professor,SriPadmavathi School of Pharmacy,Tiruchanoor,Tirupati
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CONTENTS
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INTRODUCTION  BASIC PRINCIPLE  DIFFERENT TECHNIQUES APPLICATIONS OF NMR IN MEDICINE  CLINICAL APPLICATIONS IN DIAGNOSIS  DRUG DEVELOPMENT NMR Nobel prize laureates

INTRODUCTION
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BASIC PRINCIPLE IN NMR Atomic nuclei – tiny magnets In external magnetic field - allign or oppose If irradiated with EMR of proper frequency – Resonance √ α βo PARAMETERS  Chemical shifts  Spin lattice relaxation time

DIFFERENT TECHNIQUES
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Based on nuclei H1 NMR C13 NMR F13 NMR & P31 NMR N15 NMR & O17 NMR
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CWNMR FTNMR 2D_NMR &3D_NMR COSY _CORRELATION SPECTROSCOPY MRI_MAGNETIC RESONANCE IMAGING ESR_ELECTRON SPIN RESONANCE SPECTROSCOPY

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APPLICATIONS OF NMR IN MEDICINE
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CLINICAL APPLICATION OF PROTON IMAGING IN DIAGNOSIS
Distinguishing gray matter & white matter Imaging posterior fossae, brain stem, spinal cord Detect demyelinating lesions, tumors, hemorrhages, infarctions

BRAIN
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ABDOMEN
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Metabolic liver disease Measures liver iron over load in hemochromatosis Focal areas of inflammation in chronic active hepatisis Distinguishing renal cortex & medulla To evaluate transplanted kidney Differentiates between Benign prostatic hyperplasia & prostatic carcinoma Detects bladder tumours

KIDNEYS
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PELVIS
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MEDIASTINUM, HILUM, LUNG
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Assessing abnormalities Respiratory gating

HEART
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Tomographic images of heart muscle, chambers, valvular structures ECHO-PLANAR TECHNIQUE Discrimination between infarcted, ischemic & normal myocardium

BREAST
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3D-NMR & single-slice planar imaging in detecting breast abnormalities

MUSCULO SKELETAL SYSTEM
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Demonstrates Osteo myelitis, tumor metastasis in vertebral bodies & pelvic bones Images of muscles, tendons, ligaments Atherosclerotic vascular disease Assess blood flow in major vessels. Chemical shift phenomenon Diagnosis of rare disease to inborn errorsMc Ardle’s syndrome INVIVO Analysis of Bone flouride content.

BLOOD VESSELS & FLOW
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INVIVO SPECTROSCOPY
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PUTTING NMR IMAGING INTO PERSPECTIVE
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Eliminates risk of x-radiation
Excellent spatial & contrast resolution Detecting diseases at earlier stages

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NMR IN PHARMACEUTICAL RESEARCH
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Leading technology for 3-D structure determination of bio-macromolecules Studying protein structure SAR by NMR – Novel lead compounds Chemical shift mapping – Structural information on the binding modes and site positions Molecular dynamics, conformational analysis SHAPES NMR – SOLVE

Structural genomics
Identifying gene products in disease  Targets of drug design.
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Development of Novel drug delivery systems Enhancing HTS assays
Thousands of compounds  Cryogenic NMR technology / cryoprobes
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NMR Nobel Prize Laureates
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The Nobel Prize in Physics 1943, Ohostern, USA – Discovery of magnetic moment of proton The Nobel Prizein Physics 1952- IsidorJ. Rafi,USA – Discovery of new methods for nuclear magnetic precision The Nobel Prize in Chemistry 1991 – Felix Bloch, USA and Edward M. Purcell, USA – Methodology of high resolution NMR. The Nobel Prize in Chemistry 2002 – Kurt Wuthrich, Switzerland – Determining 3-D Structure by NMR. The Nobel Prize in Medicine 2003 – Paul C. Lauterbur, USA and Peter Mans field, U.K. – Discoveries concerning MRI.

THANKING YOU


				
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posted:6/2/2008
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