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Acupuncture Part 1. Modernization of Ancient Wisdom. Empirical Observations over Thousands of Years. Scientific Method & Case-Based Medicine. Comparison of East & West. East. West. Technology of Medicine. Art of Medicine. Holistic View. Molecular and Organ View. Circular Logic.
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Acupuncture Part 1 Modernization of Ancient Wisdom
Empirical Observations over Thousands of Years Scientific Method & Case-Based Medicine Comparison of East & West East West • Technology of Medicine • Art of Medicine • Holistic View • Molecular and Organ View • Circular Logic • Energetic • Linear Logic • Mechanistic
What is Acupuncture? • Acus meaning needle • Pungare meaing to pierce • Zhenjiu meaning needle (zhen) and moxabustion (jiu) • Manipulating body balance through regulating flow of Qi
Moxabustion • Applied either moxa or heated element (1500° F) to arthritic joints • Moxa burned in room • Moxa was better & longer lasting
What Scientific Evidence Exists? • Total Medline Cites for Acupuncture to Date Represents 16080 Publications • 2605 Scientific Studies
Animal Acupuncture Studies • Represent 1/10th of all Cites • Parallel Human Acupuncture Studies in Frequency • No Double-Blind Studies
Placebo Effect • Study showed that, if something specific is measured, then there is no placebo effect. Only if the measure is subjective. • So, “blindness” may not be valid in all cases.
NIH ‘97 Consensus on AP • Effective for Osteoarthritis and Musculoskeletal Pain • Effective for many GI Problems • IBD, diarrhea, ulcerative colitis, peptic ulcers, dyspepsia, abdominal pain, nausea and vomiting • Effective for Pulmonary disease • asthma, colds
NIH ‘97 Consensus on AP • Effective for Immunomodulation • reduces inflammation, elevates WBC, interleukin-2 production • Effective for Reproductive Disorders • uterine bleeding, ovulation
How Does AP Work? • The physiologic effects of acupuncture therapy cannot be explained by a single mechanism, but rather a series of interactions among the • Nervous System • Endocrine System • Immune System
AP Events • Simple in concept, complex in action • Starts from Local Effects • Expands to involve the entire Neural Axis
AP Events • Local effects • Segmental effects • Pain control • Organ effects • Central effects • All take place at once
Based upon the AP point selected Based upon the method of stimulation Dry needles Electrical AP Aquapuncture Hemoacupuncture Based upon the length of stimulation Low-rate, twisting stimulation of GV26 leads to endorphin response, while high-frequency needling of GV26 leads to epinephrine response Basic Tenets of AP
Effects of Acupuncture • Using manganese-enhanced fMRI (functional magnetic resonance imaging), visual effects can be seen in human and animal neural tissues Baseline Mannitol Mn Infusion EA GB34
Effects of Acupuncture • Activation of cortex is site specific • Leads initially to specific effects GB34 ST36
Effects of Acupuncture • Activation has temporal effects • Longer stimulation activates more cortical structures • Leads to broader effects 5 minutes 20 minutes
Effects of Acupuncture • In separate study, analgesic AP points were compared to non-analgesic points • Analgesic AP altered brain regions involved in pain modulation • PAG, MnR, hypothalamus, thalamus • Non-Analgesic AP did not activate same areas
Method of Stimulation • Stimulation of BL-20 (the SP association point) in horses led to analgesia using dry needles or electrical AP. • Only EA increased release of endrophins into the blood.
Anatomical Considerations • Acupuncture point • Meridians • Reflex Connections • Central Connections
Shu Xue (communication outlet) • Electrical resistance • Electrical conductivity • High density of • free nerve endings • arterioles • lymphatic vessels • mast cells
AP Point Locations • Points where neurovascular bundles where nerves penetrate the body fascia • Points where nerves bifurcate
AP Points- -Bladder Meridian • Inner and Outer Bladder Meridian Points
Acupuncture points: 4 types • Type I: motor point; 67% of all the points • maximal contraction with minimal intensity of stimulation • the nerve enters the muscle • LI-4 ( He-gu) • Type II: dorsal & ventral midline • superficial nerves in the sagittal plane • #68 (Bai-hui)
Acupuncture points: 4 types • Type III: superficial nerves / nerve plexuses • GB-34: common peroneal nerve (deep & superficial branches) • PC-6: over the median nerve • Type IV: Muscle tendon junctions • Golgi tendon organ • BL-57: gastrocnemius
HemoAcupuncture Points • Most AP points are associated with vascular elements (veins) • Blood vessel walls (veins) appear to have AP points directly on or in them
Anatomical Considerations • Acupuncture point • Meridians • Reflex Connections • Central Connections
Meridians: Myth or Reality? • Close correlation between • AP Meridian • Peripheral Nerve Pathways • Meridians appear to possess bioelectric function similar to PN • Meridians follow PN • Lung (LU) = Musculocutaneous N • Pericardium (PC) = Median N
Stimulation of AP points on meridian lower resistance at other meridian points Injection of radio-isotopes into one point gradually accumulates at other points Radio signals places over one AP point can be picked up at other AP points along the meridian Meridian Research
Lung Meridian: LU Heart Meridian: HT Pericardium M.: PC Spleen Meridian: SP Liver Meridian: LIV Kidney Meridian: KID Conception Vessels: CV Large Intestines M.: LI Small Intestines M.: SI Triple Heater M.: TH Stomach Meridian: ST Gallbladder M.: GB Bladder Meridian: BL Governing Vessels M.: GV 14 Major Meridians
Meridians • Energy flow system • Chi (Qi): energy flow • AP points on 14 major meridians • Normal: Energy flow all the time on all the meridians from one acupuncture point to another LU->LI->ST->SP->HT->SI->BL->KID->PC->TB->GB->LIV
Meridians • Where there is no free flow, there is pain. Pathogenic factors Meridian No free flow Pain
Meridians • Where there is free flow, there is no pain. Pain No free flow Pathogenic factors Meridian Acupuncture Stimulation Eliminating Meridian Normal
Anatomical Considerations • Acupuncture point • Meridians • Reflex Connections • Central Connections
AP Effects • Needle insertion stimulates afferent A-delta nociceptive fibers which leads to • Local Effects • Spinal Cord Effects • Brainstem Effects
Acupuncture Pathway • AP Stimulus is carried by afferent peripheral nerve • Can be blocked by Procaine • No AP analgesia on paralyzed limbs (somatosensory paralysis) • Most profound AP analgesia is from points overlying major peripheral nerves
Acupuncture Pathway • Stimulus enters the spinal cord • Integrated information ascends the spinal cord to the brainstem, thalamus and cerebral cortex
Acupuncture & Pain • Responses to • heat • electricity • pinprick • pinch AP Naloxone PT Analgesia
EA: Effect of Increasing Frequency 200 Hz 4 Hz 0.2 Hz Electrical Acupuncture
Electro-acupuncture 4 Hz + saline 4 Hz + Naloxone EA: Low Frequency ± Naloxone
EA: High Frequency ± Naloxone Electro-acupuncture 200 Hz + saline 200 Hz + naloxone
Mediators of AP Analgesia • Enkephalins & Dynorphins Spinal Cord (Substantia Gelatinosa) • Endorphins Brainstem (Periaqueductal Gray Matter) • 5HT Brainstem (Raphe Nuclei)
AP Analgesia • Varies among patients (species specific) • Varies from location of AP point • Varies with proximity to AP point