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PubMed2006

Designing an acupuncture study: the nationwide, randomized, controlled, German acupuncture trials on migraine and tension-type headache.

BACKGROUND: In the nationwide German Acupuncture Trials (GERAC) verum acupuncture, based on Traditional Chinese Medicine (TCM), was to be tested against sham acupuncture for the entities classified in the West as "migraine" (MIG) and "tension-type headache" (TTH). However, there were no generally accepted guidelines on how to perform a consistent verum or sham treatment. OBJECTIVE: To design broadly consensual verum and sham acupuncture treatment protocols for MIG and TTH for the GERAC. METHODOLOGY: Extensive literature study and consultation with acupuncture experts. Personal interviews, both free and structured, e-mail discussions, and phone conferences were used. RESULTS: Broadly consensual acupuncture protocols for MIG and TTH for verum and sham acupuncture were developed. They included semi-standardized point combinations with clearly described point selection rules based on TCM acupuncture diagnoses. A procedure was developed to help ensure homogenous treatment quality in a large multicenter trial. CONCLUSIONS: The GERAC study design allowed acupuncture to be tested in a naturalistic environment. The rigorous study design and the large number of physician investigators guaranteed a high external validity for the results. The results will help determine the significance of Chinese acupuncture in the context of Western medicine for the treatment of MIG and TTH.

Female↗
PubMed2004

Acupuncture compared to placebo-acupuncture for postoperative nausea and vomiting prophylaxis: a randomised placebo-controlled patient and observer blind trial.

This randomised, placebo-controlled, patient and observer blinded trial was conducted to determine whether acupuncture at the acupuncture point P6 is effective in preventing postoperative nausea and vomiting (PONV) compared to placebo acupuncture. Female patients (n = 220) scheduled for gynaecological or breast surgery were randomly assigned to two groups receiving either acupuncture (n = 109) or placebo acupuncture (n = 111). Each group was stratified for type of surgery and included two subgroups receiving intervention either before or after induction of anaesthesia. The incidence of PONV and/or antiemetic rescue medication within 24 h after surgery was the main outcome measure which showed no statistically significant difference between groups (43.7% acupuncture, 50.9% placebo, p = 0.27). The differences were more pronounced for patients having gynaecological surgery (48.9% acupuncture, 67.6% placebo, p = 0.07) than for those having breast surgery (38.7% acupuncture, 40.3% placebo, p = 0.86). The secondary outcome, vomiting, was significantly reduced by acupuncture from 39.6% to 24.8% (p = 0.03). Subgroup analysis showed no difference between applications of acupuncture before compared to after induction of anaesthesia.

Acupuncture Therapy↗
PubMed2004

Is acupuncture a useful adjunct to physiotherapy for older adults with knee pain?: the "acupuncture, physiotherapy and exercise" (APEX) study [ISRCTN88597683].

BACKGROUND: Acupuncture is a popular non-pharmacological modality for treating musculoskeletal pain. Physiotherapists are one of the largest groups of acupuncture providers within the NHS, and they commonly use it alongside advice and exercise. Conclusive evidence of acupuncture's clinical effectiveness and its superiority over sham interventions is lacking. The Arthritis Research Campaign (arc) has funded this randomised sham-controlled trial which addresses three important questions. Firstly, we will determine the additional benefit of true acupuncture when used by physiotherapists alongside advice and exercise for older people presenting to primary care with knee pain. Secondly, we will evaluate sham acupuncture in the same way. Thirdly, we will investigate the treatment preferences and expectations of both the participants and physiotherapists participating in the study, and explore the effect of these on clinical outcome. We will thus investigate whether acupuncture is a useful adjunct to advice and exercise for treating knee pain and gain insight into whether this effect is due to specific needling properties. METHODS/DESIGN: This randomised clinical trial will recruit 350 participants with knee pain to three intervention arms. It is based in 43 community physiotherapy departments in 21 NHS Trusts in the West Midlands and Cheshire regions in England. Patients aged 50 years and over with knee pain will be recruited. Outcome data will be collected by self-complete questionnaires before randomisation, and 6 weeks, 6 months and 12 months after randomisation and by telephone interview 2 weeks after treatment commences. The questionnaires collect demographic details as well as information on knee-related pain, movement and function, pain intensity and affect, main functional problem, illness perceptions, self-efficacy, treatment preference and expectations, general health and quality of life. Participants are randomised to receive a package of advice and exercise; or this package plus real acupuncture; or this package plus sham acupuncture. Treatment details are being collected on a standard proforma. Interventions are delivered by experienced physiotherapists who have all received training in acupuncture to recognised national standards. The primary analysis will investigate the main treatment effects of real or sham acupuncture as an adjunct to advice and exercise. DISCUSSION: This paper presents detail on the rationale, design, methods, and operational aspects of the trial.

Acupuncture Therapy↗
PubMed2005

Acupuncture and self acupuncture for long-term treatment of vasomotor symptoms in cancer patients--audit and treatment algorithm.

INTRODUCTION: Since hormone replacement therapy given for long periods is now recognised to produce serious side effects, patients with troublesome vasomotor symptoms are increasingly using non-hormonal treatment including acupuncture. Several randomised controlled trials have shown that acupuncture reduces menopausal symptoms in patients experiencing the normal climacteric. It may have this effect by raising serotonin levels which alter the temperature set point in the hypothalamus. Vasomotor symptoms can be extreme in breast cancer patients and patients with prostate cancer who are undergoing anticancer therapy. The safety of some herbal medicines and phytoestrogens has been questioned, as they could potentially interfere adversely with the bioavailability of tumouricidal drugs. A previous study reports short term benefit from acupuncture, and the aim of this report is to describe our approach to long term treatment. ACUPUNCTURE APPROACH: After piloting several approaches, six weekly treatments were given initially at LI4, TE5, LR3 and SP6 and two upper sternal points, but avoiding any limb with existing lymphoedema or prone to developing it. If there were no contraindications, patients were given clear instructions on how to perform self acupuncture using either semi-permanent needles or conventional needling at SP6, weekly for up to six years, for long term maintenance. AUDIT METHODS AND RESULTS: A retrospective audit of electronic records was carried out by a doctor not involved in treatment. A total of 194 patients were treated, predominantly with breast and prostate cancer. One hundred and eighty two patients were female. The number of pre-treatment hot flushes per day was estimated by the patient: in the 159 cases providing adequate records, the mean was 16 flushes per day. Following treatment, 114 (79%) gained a 50% or greater reduction in hot flushes and 30 (21%) a less than 50% reduction. Treatment was abandoned in those who responded poorly or not at all. The duration of treatment varied from one month to over six years with a mean duration of nine months. Seventeen patients (9%) experienced minor side effects over the six year period, mostly minor rashes; one patient described leg swelling but this was likely to be due to a concurrent fracture. CONCLUSION: Acupuncture including self acupuncture is associated with long-term relief of vasomotor symptoms in cancer patients. Treatment is safe and costs appear to be low. An algorithm is presented to guide clinical use. We recommend the use of self acupuncture with needles at SP6 in preference to semi-permanent needles in the first instance, but poor responders use indwelling studs if they fail to respond adequately to self acupuncture with regular needles. Point location may be of less importance than the overall 'dose', and an appropriate minimum dose may be required to initiate the effect.

Acupuncture Therapy↗
PubMed2006

How do acupuncture and moxibustion act? - Focusing on the progress in Japanese acupuncture research -.

The mechanisms of action of acupuncture and moxibustion as reported by Japanese researchers are reviewed. The endogenous opioid-mediated mechanisms of electroacupuncture (EA) as used in China are well understood, but these are only one component of all mechanisms of acupuncture. These studies emphasize the similarity of the analgesic action of EA to various sensory inputs to the pain inhibition mechanisms. In Japanese acupuncture therapy, careful detection of the acupuncture points and fine needling technique with comfortable subjective sensation are considered important. The role of polymodal receptors (PMR) has been stressed based on the facts that PMRs are responsive to both acupuncture and moxibustion stimuli, thermal sensitivity is essential in moxibustion therapy, and the characteristics of acupuncture points and trigger points are similar to those of sensitized PMRs. Acupuncture and moxibustion are also known to affect neurons in the brain reward systems and blood flow in skin, muscle, and nerve. Axon reflexes mediated by PMRs might be a possible mechanism for the immediate action of acupuncture and moxibustion. Reports on the curative effects of acupuncture on various digestive and urological disorders are also reviewed briefly.

Acupuncture↗
PubMed1988

Studies on the enhanced effect of acupuncture analgesia and acupuncture anesthesia by D-phenylalanine (first report)--effect on pain threshold and inhibition by naloxone.

It has been claimed that the mechanism of acupuncture analgesia can be explained in part by endogenous opioids. If so, it might be possible to enhance the analgesic effect of acupuncture by the administration of endorphins. If D-phenylalanine (DPA), an inhibitor of the endorphin degrading enzyme, is administered, the analgesic effect of acupuncture should be prolonged due to the increased level of endorphins. From the changes of the pain threshold (PT), we investigated whether or not the pre-administration of DPA can enhance the analgesic effect of acupuncture in humans. In addition, we examined the inhibitory effect of naloxone. 1) In all five subjects whose PT was raised after acupuncture anesthesia (respondents), the rise in PT was significantly prolonged by DPA. 2) Out of 10 subjects whose PT remained almost unchanged after acupuncture anesthesia (non-respondents), the PT was increased by DPA in 5 cases. 3) The rise in PT was most prominent when DPA was administered 30 minutes before the start of acupuncture anesthesia. 4) In all 4 respondents in whom the rise in PT persisted after DPA and acupuncture anesthesia, their raised PT dropped after the intravenous injection of naloxone (10 mg). 5) These findings show that DPA enhances the analgesic effect of acupuncture by the "endorphin mechanism."

Acupuncture Therapy↗
PubMed2002

[The effect of acupuncture or electro-acupuncture on circulatory parameters].

We examined the effect of acupuncture or electro-acupuncture on circulatory parameters by use of a non-invasive procedure in 10 healthy male adult volunteers. Circulatory parameters measured were systolic blood pressure, pulse rate, total peripheral resistance and cardiac output. Acupuncture and electro-acupuncture significantly increased total peripheral resistance, and electro-acupuncture increased systolic blood pressure further. There was no difference in cardiac output compared with the control. The results suggest that acupuncture or electro-acupuncture has an action of alpha-stimulation but not of beta-stimulation, and that electro-acupuncture has a stronger effect than acupuncture alone.

Acupuncture↗
PubMed2003

Effect of acupuncture compared with placebo-acupuncture at P6 as additional antiemetic prophylaxis in high-dose chemotherapy and autologous peripheral blood stem cell transplantation: a randomized controlled single-blind trial.

PURPOSE: The purpose is to investigate an additional antiemetic effect to ondansetron with needle acupuncture at P6 compared with nonskin-penetrating placebo acupuncture in patients undergoing high-dose chemotherapy and autologous peripheral blood stem cell transplantation. EXPERIMENTAL DESIGN: Eighty patients who were admitted to hospital for high-dose chemotherapy and autologous peripheral blood stem cell transplantation were included into a randomized placebo-controlled single-blind trial. The patients were randomized to receive acupuncture (n = 41) or noninvasive placebo acupuncture (n = 39) at the acupuncture point P6 30 min before first application of high-dose chemotherapy and the day after. All patients received 8 mg ondansetron/day i.v. as basic antiemetic prophylaxis. The main outcome measure was the rate of patients who either had at least one episode of vomiting or required any additional antiemetic drugs on the first 2 days of chemotherapy. RESULTS: The main outcome measure showed no significant difference (P = 0.82): 61% failure in the acupuncture group and 64% in the placebo acupuncture group (95% confidence interval of 3% difference: -18.1 and 24.3%). Comparing nausea, episodes of vomiting or retching and number of additionally required antiemetic drugs did not provide any discrepancy with the main result. CONCLUSIONS: This study suggests that in combination with ondansetron i.v., invasive needle acupuncture at P6 compared with nonskin-penetrating placebo acupuncture has no additional effect for the prevention of acute nausea and vomiting in high-dose chemotherapy.

Acupuncture↗
PubMed2006

[Control study of therapeutic effects of three phase acupuncture method and routine acupuncture method on periarthritis of shoulder].

OBJECTIVE: To compare therapeutic effects of the three phase acupuncture method and routine acupuncture method on periarthritis of shoulder. METHODS: Randomized, controlled and single blind method was adopted and 70 cases were divided into a three phase acupuncture group and a routine acupuncture group, 35 cases in each group. Same acupoints were selected in the two groups and selection of acupoints, manipulation of the needle and motion in the three phase acupuncture group were conducted by stages. RESULTS: The effective rate was 97.15% in the three phase acupuncture group which was better than 87.10% in the routine acupuncture group (P < 0.05). After treatment, VAS scores decreased significantly in the two groups (P < 0.01), and there was a significant difference between the two groups in the difference of VAS after treatment (P < 0.01). CONCLUSION: The three phase acupuncture treatment was superior to the routine acupuncture therapy in therapeutic effect on periarthritis of shoulder.

Acupuncture Therapy↗
PubMed1997

[Acupuncture for pain in locomotive disorders. Critical analysis of clinical studies with respect to the quality of acupuncture in particular].

88 clinical acupuncture studies concerning the treatment of locomotive disorders are compared. The studies are evaluated according to treatment quality and categorised into 6 categories. For the assessment of acupuncture treatment quality minimal criteria are defined: reporting the duration of one acupuncture treatment (at least 15 min.), reporting the frequency of acupuncture treatments (at least 10 sessions before cancelling the therapy), exact description of used acupuncture points. Without respect to biostatistical and therapeutical qualities, 75 of 88 studies (85.2%) showed positive results for the acupuncture treatment. None of the 16 studies, that met the minimal criteria we defined, could prove that acupuncture is non-effective. Only two of the 16 studies are controlled trials. Our results were compared with those of meta-analytical reviews, which discussed acupuncture studies solely on the basis of the biometrical aspects. In comparison to conventional orthopedic therapies, certain locomotive disorders are recommended for acupuncture therapy.

English Abstract↗
PubMed2004

Auricular acupuncture in the treatment of cocaine/crack abuse: a review of the efficacy, the use of the National Acupuncture Detoxification Association protocol, and the selection of sham points.

BACKGROUND: The United Kingdom has had a significant increase in addiction to and use of cocaine among 16-29-year olds from 6% in 1998 to 10% in 2000. In 2000, the United Kingdom had the highest recorded consumption of "recent use" cocaine in Europe, with 3.3% of young adults. Acupuncture is quick, inexpensive, and relatively safe, and may establish itself as an important addiction service in the future. AIM: To select investigations that meet the inclusion criteria and critically appraise them in order to answer the question: "Is acupuncture effective in the treatment of cocaine addiction?" The focus shall then be directed toward the use of the National Acupuncture Detoxification Association (NADA) protocol as the intervention and the selection of sham points for the control group. DATA SOURCES: The ARRC database was accessed from Trina Ward (M. Phil. student) at Thames Valley University. AMED, MEDLINE and Embase were also accessed along with "hand" searching methods at the British Library. INCLUSION AND EXCLUSION CRITERIA: People addicted to either cocaine or crack cocaine as their main addiction, needle-acupuncture, single-double-blinded process, randomized subjects, a reference group incorporating a form of sham points. EXCLUSION CRITERIA: use of moxibustion, laser acupuncture, transcutaneous electrical nerve stimulation (TENS) electroacupuncture or conditions that did not meet the inclusion criteria. QUALITY ASSESSMENT: The criteria set by ter Riet, Kleijnen and Knipschild (in 1990); Hammerschlag and Morris (in 1990); Koes, Bouter and van der Heijden (in 1995), were modified into one set of criteria consisting of 27 different values. RESULTS: Six randomized controlled trials (RCTs) met the inclusion criteria and were included in this review. All studies scored over 60 points indicating a relatively adequate methodology quality. The mean was 75 and the standard deviation was 6.80. A linear regression analysis did not yield a statistically significant association (n = 6, p = 0.11). CONCLUSIONS: This review could not confirm that acupuncture was an effective treatment for cocaine abuse. The NADA protocol of five treatment points still offers the acupuncturist the best possible combination of acupuncture points based upon Traditional Chinese Medicine. Throughout all the clinical trials reviewed, no side-effects of acupuncture were noted. This paper calls for the full set of 5 treatment points as laid out by the NADA to be included as the treatment intervention. Points on the helix, other than the liver yang points, should be selected as sham points for the control group.

Acupuncture Points↗
PubMed1995

Acupuncture--from empiricism to science: functional background to acupuncture effects in pain and disease.

Acupuncture is part of Traditional Chinese Medicine, a system with an empirical basis which has been used in the treatment and prevention of disease for centuries. A lack of scientific studies to prove or disprove its claimed effects led to rejection by many of the western scientific community. Now that the mechanisms can be partly explained in terms of endogenous pain inhibitory systems, the integration of acupuncture with conventional medicine may be possible. Its use for pain relief has been supported by clinical trials and this has facilitated its acceptance in pain clinics in most countries. Acupuncture effects must devolve from physiological and/or psychological mechanisms with biological foundations, and needle stimulation could represent the artificial activation of systems obtained by natural biological effects in functional situations. Acupuncture and some other forms of sensory stimulation elicit similar effects in man and other mammals, suggesting that they bring about fundamental physiological changes. Acupuncture excites receptors or nerve fibres in the stimulated tissue which are also physiologically activated by strong muscle contractions and the effects on certain organ functions are similar to those obtained by protracted exercise. Both exercise and acupuncture produce rhythmic discharges in nerve fibres, and cause the release of endogenous opioids and oxytocin essential to the induction of functional changes in different organ systems. Beta-endorphin levels, important in pain control as well as in the regulation of blood pressure and body temperature, have been observed to rise in the brain tissue of animals after both acupuncture and strong exercise. Experimental and clinical evidence suggest that acupuncture may affect the sympathetic system via mechanisms at the hypothalamic and brainstem levels, and that the hypothalamic beta-endorphinergic system has inhibitory effects on the vasomotorcenter, VMC. Post-stimulatory sympathetic inhibition which proceeds to a maximum after a few hours and can be sustained for more than 12 hours, has been demonstrated in both man and animals. Experimental and clinical studies suggest that afferent input in somatic nerve fibres has a significant effect on autonomic functions. Hypothetically, the physiological counterpart lies in physical exercise, and the effect can be artificially reproduced via various types of electrical or manual stimulation of certain nerve fibres.

Acupuncture Therapy↗
PubMed2003

Electrical stimulation of auricular acupuncture points is more effective than conventional manual auricular acupuncture in chronic cervical pain: a pilot study.

UNLABELLED: In this prospective, randomized, double-blinded, controlled study, we tested the hypothesis that auricular electroacupuncture relieves pain more effectively than conventional manual auricular acupuncture. We studied 21 chronic cervical pain patients without radicular symptoms with insufficient pain relief (visual analogue scale >5) treated with standardized analgesic therapy. All patients received disposable acupuncture needles on the dominant side on the following acupuncture points: cervical spine, shen men, and cushion. In 10 patients, needles were continuously stimulated (2-mA constant current, 1 Hz monophasic) by using the electrical point stimulation device P-STIM. In 11 control patients, no electrical stimulation was administered. All needles were withdrawn 48 h after insertion. Acupuncture was performed once a week for 6 wk. Patients had to complete a questionnaire assessing pain intensity, psychological well-being, activity, sleep, and demand for rescue medication (lornoxicam and tramadol). The reduction in pain scores was significant in the electrical acupuncture group. Similarly, psychological well-being, activity, and sleep were significantly improved in patients receiving electrical acupuncture, and consumption of rescue medication was significantly less. These results demonstrate that continuous electrical stimulation of auricular acupuncture points by using the new point stimulation device P-STIM improves the treatment of chronic cervical pain in an outpatient population. IMPLICATIONS: Continuous electrical stimulation of auricular acupuncture points by using the new point stimulation device P-STIM significantly decreases pain intensity and significantly improves psychological well-being, activity, and sleep in chronic cervical pain patients.

Activities of Daily Living↗
PubMed2006

[Observation on clinical therapeutic effect of scalp acupuncture combined with body acupuncture on apoplectic hemiplegia].

OBJECTIVE: To search for the best method for increasing clinical therapeutic effect on apoplectic hemiplegia. METHODS: One hundred and twenty cases of apoplectic hemiplegia were randomly divided into three groups in order of visiting. Group A (n = 33) were treated by scalp acupuncture combined with consciousness-restoring resuscitation method, group B (n = 60) by scalp acupuncture combined with traditional acupuncture, and group C (n = 27) by traditional acupuncture. The clinical therapeutic effects were evaluated according to the scores of manner, speech, motor function of limbs, and so on. RESULTS: Three cases were basically cured, 20 were markedly effective, 7 were effective, with a total effective rate of 90.9% in the group A; and the corresponding figures were 7, 28, 21 cases and 93.3%, respectively in group B with no significant difference between the group A and B (P > 0.05); and 7 cases were markedly effective, 11 effective with a total effective rate of 66. 7% in the group C with a significant difference as compared with the group A and B (P < 0.05, P < 0.001). CONCLUSION: Scalp acupuncture combined with consciousness-restoring resuscitation method and scalp acupuncture combined with traditional acupuncture have a similar therapeutic effect on apoplectic hemiplegia, which is superior to that of traditional acupuncture.

Acupuncture Therapy↗
PubMed1987

Role of calcium in electron-acupuncture analgesia and the developments of analgesic tolerance to electro-acupuncture and morphine.

Role of brain Ca2+ in electro-acupuncture analgesia and the development of analgesic tolerance to electro-acupuncture and morphine were studied. At the same time, the inhibition by protein synthesis inhibitors of the development of analgesic tolerance to electro-acupuncture was observed. The results showed that like morphine tolerance, the brain Ca2+ and cAMP levels in mice were enhanced with the development of analgesic tolerance to electro-acupuncture. After treatment with protein synthesis inhibitors anisomycin, actinomycin or cycloheximide the development of analgesic tolerance to electro-acupuncture was inhibited, and concurrently, the brain Ca2+ and cAMP levels in the animals greatly reduced. From the changes of brain Ca2+ and cAMP levels, the analgesic effects by electro-acupuncture, morphine and lanthanides seem to be very similar and share a mutual ion basis and the mechanism of action. So does the development of analgesic tolerance to electro-acupuncture and morphine. These findings also suggest that the inhibition induced by the inhibitors of the analgesic tolerance to electro-acupuncture and morphine may be related to synthesis of new peptides or RNA in brain.

Acupuncture Therapy↗
PubMed1996

Innovations in acumoxa: acupuncture analgesia, scalp and ear acupuncture in the People's Republic of China.

This paper examines three 'innovations in acumoxa' (zhenjiu) that were promulgated by the Chinese government during the Maoist periods of the Great Leap Forward (1958-61) and the Cultural Revolution (1966-76): acupuncture analgesia (zhenjiu mazui), scalp acupuncture (touzhen) and ear acupuncture (erzhen). They all bear features of Chinese and Western medical practice, a characteristic which has been exploited in Chinese politics of health. On the one hand, the innovations have been promoted for the nationalistic reason in virtue of their being inherently Chinese. On the other hand, by equating Western medical practice with science, they signify modernity and progressiveness. In the late eighties, all still enjoyed official backing. Although they were no longer exclusively practised in government hospitals, they still stood for what they had originally been promulgated. Acupuncture analgesia, while no more practised in the clinic, is still the prototype of a Chinese scientific therapy, now subject to biomedical research in laboratories. Scalp acupuncture, which never became widely known as a modern Chinese-Western innovation, is still being practised exclusively by skilled doctors. Ear acupuncture is now practised also outside government institutions, for the same reasons of being easily applied, easily learnt and extremely economical as it had originally been promulgated. Paradoxically, ear acupuncture, the most popular of the three, was 'discovered' outside China, by a French doctor, and is founded on the principles of reflexology, a therapy that the biomedical establishment does not consider scientific.

Acupuncture Analgesia↗
PubMed1992

[Preliminary observation on the relation among needling sensation, propagated sensation along meridian (PSM), and acupuncture effect when acupuncture neiguan].

This paper reports 300 coronary heart disease patients with different needling sensations, mainly with distension, when acupuncturing Neiguan by identical acupuncture doctor with same manipulation. The higher rate of PSM appearance and better acupuncture effect were observed, in patients with compound sensation, such as sourness-distension and distension-numbness. All of the patients who felt pain did not appear PSM and the acupuncture effect was poor. The appearance rate of PSM and acupuncture effect of other kind needling sensations were between the two. The results showed the kind of needling sensation while acupuncture had close relation with the appearance of PSM and the acupuncture effect.

Acupuncture Points↗
PubMed1983

Naloxone fails to reverse pain thresholds elevated by acupuncture: acupuncture analgesia reconsidered.

We were unable to demonstrate the reversal of dental acupunctural analgesia following the injection of 0.4 mg naloxone using evoked potential methodology. Since our findings differed from those of Mayer, Price and Rafii who used pain threshold methods, we attempted to replicate their study. Subjects who demonstrated acupunctural analgesia during electrical stimulation of the LI-4 point on the hands received either 1.2 mg naloxone or normal saline under double blind conditions. Pain thresholds elevated by acupuncture failed to reverse when naloxone was given. Review of experimental design issues, other related human subjects research, and animal studies on acupunctural analgesia provided little convincing evidence that endorphins play a significant role in acupunctural analgesia. Because endorphins can be released in response to a stressor, endorphin presence sometimes correlates with acupunctural treatment in animal studies and some human studies, especially those involving pain patients. The primary analgesia elicited by acupunctural stimulation seems to involve other mechanisms.

Acupuncture Therapy↗