Efficacy of electroacupuncture in the treatment of functional constipation: A randomized controlled pilot trial / 中国结合医学杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy and safety of electroacupuncture at Tianshu (ST25) for patients with functional constipation (FC).</p><p><b>METHODS</b>Ninety-six patients with FC were randomized to receive deep needling on bilateral ST25 (group A, 48 cases) or shallow needling on bilateral ST25 (group B, 48 cases) with electroacupuncture once daily for 4 weeks. The proportion of patients with four or more complete spontaneous bowel movements (CSBMs) per week, and scores of constipation symptoms and satisfaction with treatment were compared between two groups. Safety was also assessed.</p><p><b>RESULTS</b>The proportion of patients with four or more CSBMs per week was 52.1% in group A, significantly higher than 25.0% in group B during the 4-week treatment (P<0.05). The constipation symptom score of patients were significantly improved in group A as compared with group B at week 2-4 (P<0.05). Patients in group A were more satisfied with their treatment compared with those in group B at week 1-4 (P<0.05). Five patients in group A felt significant pain and discomfort. No other adverse reaction was observed in both groups.</p><p><b>CONCLUSION</b>Using electroacupuncture at ST25 to treat patients with FC is effectively, and deep needling had more stable effect than shallow needling.</p>

Therapeutic effects of electroacupuncture at ST36 acupoint on sodium-taurocholate-induced severe acute pancreatitis / 中国结合医学杂志

<p><b>OBJECTIVE</b>To explore the protective effects and mechanisms of electroacupuncture (EA) at Zusanli (ST36) acupoint in rats with severe acute pancreatitis (SAP).</p><p><b>METHODS</b>Sixty-six male Sprague-Dawley rats were randomly assigned to three groups of 22 each: a SAP model group (SAP group), a shamoperated group (sham group) and a EA at ST36 acupoint group (EA group). A rat model of SAP was induced by pancreatic duct injection with 3.5% sodium taurocholate. EA was performed at ST36 acupoint for 30 min after induction of SAP and 30 min before sacrificed. The rats were killed at 3 h (n=7), 6 h (n=7) and 12 h (n=8) after operation, and blood samples were taken for the measurement of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6) and acetylcholine (Ach) by enzyme-linked immunosorbnent assay. The pathological changes of pancreatic tissue, volume of ascites and pancreatic weight/body weight ratio were measured.</p><p><b>RESULTS</b>The serum concentrations of TNF-α and IL-6 in the EA group were significantly lower than in the SAP group at 3, 6 and 12 h after the operation (p<0.05). Serum Ach in the EA group was significantly higher than in the SAP group at various time points after operation (p<0.05). The other parameters were clearly improved after treatment with EA.</p><p><b>CONCLUSION</b>EA at ST36 acupoint might have a therapeutic effect in rats with SAP through activating the cholinergic anti-inflammatory pathway.</p>

Electroacupuncture for the prevention of postoperative gastrointestinal dysfunction in patients undergoing vascular surgery under general anesthesia: study protocol for a prospective practical randomized controlled trial / 中西医结合学报

<p><b>BACKGROUND</b>Postoperative gastrointestinal dysfunction (PGD) is one of the most common complications following major surgeries under general anesthesia (GA). Despite ongoing research and new drug treatments, abdominal distension within 24 h postoperatively occurs in 8%-28% of all surgeries. We aim to analyze the effectiveness of preventing PGD by preoperatively stimulating Neiguan (PC6), Zusanli (ST36) and Shangjuxu (ST37) bilaterally twice a day compared with sham-acupuncture treatment and standard treatment.</p><p><b>METHODS AND DESIGN</b>This is a single-center, prospective practical randomized controlled trial. All groups will be given standard treatments. Patients undergoing vascular surgery under GA will be included from the Vascular Surgery Unit in West China Hospital of Sichuan University, China, and divided into three groups. The experimental group will receive routine treatments and acupuncture at PC6, ST36 and ST37 bilaterally with electrical stimulation twice a day for 20 min preoperatively. The sham-acupuncture group will receive pseudo-electroacupuncture at sham acupoints of PC6, ST36 and ST37, which are 1 cun away from the real acupoints. The routine-treatment group will not receive electroacupuncture. The outcomes include the incidence of abdominal distention, abdominal circumference, the degree of abdominal distension, the first time of flatus and defecation, and hospitalization duration.</p><p><b>DISCUSSION</b>The results from this study will demonstrate whether preoperative electroacupuncture is an effective method for the prevention of PGD in patients undergoing vascular surgery under GA. This study may also provide a standardized acupuncture treatment for reduction of PGD.</p>

Adhesive ileus treated by electroacupuncture at Zhigou (TE 6) and Zusanli (ST 36): a randomized controlled study / 中国针灸

<p><b>OBJECTIVE</b>To assess the clinical efficacy on adhesive ileus treated by electroacupuncture (EA) at Zhigou (TE 6) and Zusanli (ST 36), and to explore the different effects of acupoint and non-acupoint.</p><p><b>METHODS</b>Forty cases were randomized into an acupoint group and a non-acupoint group, 20 cases in each one. At the same time of the basic treatment, in the acupoint group, EA was applied at bilateral Zhigou (TE 6) and Zusanli (ST 36). In the non-acupoint group, EA was applied at the sites (that were neither on any meridian nor belonged to any acupoint) that were 0.5 to 1 cm lateral to Zhigou (TE 6) and Zusanli (ST 36) on both sides. Acupuncture was given twice a day, lasting for 4 days totally. The situation of abdominal pain, the time for the improvement in abdominal distention, the time of first voluntary defecation, the time of solid food intake and the others were observed.</p><p><b>RESULTS</b>In the acupoint group, the abdominal pain and distention were relieved rapidly as compared with those in the non-acupoint group. The results of the assessment face scale (AFS), the first anal exhaust time [(51.35 +/- 32.40) h vs (101.85 +/- 53.87) h], the first defecation time [(82.70 +/- 57.27) h vs (154.70 +/- 145.28) h] and the first solid food intake time [(119.65 +/- 56. 16) h vs (231.95 +/- 180.89) h] were all remarkably improved as compared with those in the non-acupoint group, presenting the statistical significance (P<0.05, P<0.01). Concerning the case number for the conversion to surgery, the death number and the number for the re-admission in 1 year follow-up visit, there was no significant difference in statistics between two groups (all P>0.05). But, the data suggested that the results were improved in tendency in the acupoint group.</p><p><b>CONCLUSION</b>EA at Zhigou (TE 6) and Zusanli (ST 36) achieves the good clinical efficacy on adhesive ileus. This therapy can remarkably improve abdominal pain and distention and promote the intestinal peristalsis for the patients and is superior to EA at non-acupoint.</p>

Double-center randomized controlled trial on post-stroke shoulder pain treated by electroacupuncture combined with Tuina / 中国针灸

<p><b>OBJECTIVE</b>To evaluate clinical therapeutic effect of post-stroke shoulder pain treated by acupuncture combined with Tuina.</p><p><b>METHODS</b>Three hundred cases of post-stroke shoulder pain were randomly divided into an acupuncture and Tuina group and a rehabilitation group by double-center randomized controlled clinical trial method. In acupuncture and Tuina group, normalized electroacupuncture and Tuina therapy were applied, that was electroacupuncture at main points, such as Chize (LU 5), Quze (PC 3), Shaohai (HT 3), Jianyu (LI 15), Jianliao (TE 14) and Jianjing (GB 21),etc., combined with traditional Tuina manipulations; in rehabilitation group, the rehabilitation methods such as the electrostimulation through nervus cutaneus and the squeezing and stabilizing manipulations of Proprioceptive Neuromuscular Facilitation (PNF), etc. were applied. The treatment courses of both groups were 6 weeks. The main therapeutic effect indices were the Assessment Face Scale (AFS) for pain when shoulder was in passive motion and the Fugl-Meyer Motor Assessment for upper limbs active function; the secondary indices were the moditied Rankin Scale (mRS) and the clinical incidences of shoulder-hand syndrome of hemiplegia and shoulder joint subluxation of hemiplegia.</p><p><b>RESULTS</b>After 6 weeks treatment and 12 weeks follow-up, AFS score, Fugl-Meyer motor assessment of upper limbs active function and mRS evaluation in acupuncture and Tuina group were more obviously improved than those in rehabilitation group (P < 0.05, P < 0.01). Although the clinical incidences of shoulder-hand syndrome of hemiplegia and shoulder joint subluxation of hemiplegia in acupuncture and Tuina group was equal to those in rehabilitation group [3.55% (5/141) vs 8.45% (12/142), 1.42% (2/141) vs 5.63% (8/142), both P > 0.05], the data indicated that there was a superiority tendency in acupuncture and Tuina group.</p><p><b>CONCLUSION</b>The combined therapy of electroacupuncture and Tuina is a normative manipulation, and the therapeutic effect is satisfying for post-stroke shoulder pain, superior to that of comprehensive rehabilitation treatment.</p>

Rapid pore cranial drilling and ventricular drainage treatment in ventricular hemorrhage: a clinical analysis of 3571 cases / 中华神经医学杂志

Objective To summarize the clinical effects and experiences of rapid pore cranial drilling and ventricular drainage treatment on ventricular hemorrhage to evaluate the performance of rapid pore cranial drilling. Methods The clinical data of 3571 patients with ventricular hemorrhage performed the rapid pore cranial drilling and ventricular drainage treatment from 13 hospitals of Shandong province since 1977 were retrospectively analyzed and concluded; these data were compared with those in patients received traditional Dandy's device. Results In these 3571 patients, the cure rate was 27.1%, the improvement rate was 49.1%, and the death rate was 23.8%. Rapid pore drilling needed no scalp incision, no suction, no coagulation, or no special lighting, only needed puncturing the scalp, drilling through the cranium and dura matter, implanting drainage tube and stitching it up; one can manage it in about 5 minutes at bedside; while the traditional Dandy's drilling occupied 3 people in the operating room, needed more than 20 procedures, and plus the time transporting the patient, it needed at least 60 minutes or more to finfish the procedures. Rapid pore cranial drill device is superior to Dandy's cranial drill device in operating procedures, technical performance, operation conditions, personnel and time-consuming. Conclusion Rapid pore cranial drilling greatly simplifies the operating procedures, saves precious time for the seriously ill patients, reduces the mortality and improves the effectiveness of the treatment. After 35 years of clinical practice, to those patients seriously ill needed ventricular drainage treatment to rescue their lives, rapid pore cranial drilling is superior to traditional Dandy's drill technic, and is an effective method treating such diseases.

Clinical observation of urinary retention after hemorrhoid and fistula operation treated with suspen-ding moxibustion / 中国针灸

<p><b>OBJECTIVE</b>To compare the therapeutic effects among moxibustion, local hot compress and infrared irradiation on urinary retention after hemorrhoid and fistula operation so as to provide the clinical evidences for the promotion and application of moxibustion.</p><p><b>METHODS</b>The randomized controlled trial method was adopted to divide 60 cases of post-operative urinary retention into moxibustion group, hot compress group and infrared irradiation group, 20 cases in each group. In moxibustion group, suspending moxibustion was applied on Qihai (CV 6) and Zhongji (CV 3). In hot compress group, hot compress was applied on the bladder region above the symphysis pubis of the lower abdomen. In infrared irradiation group, MF-C701 multi-source infrared apparatus was used on the bladder region above the symphysis pubis of the lower abdomen. One intervention therapy was administered for the cases of post-operative urinary retention. The efficacy was assessed based on the numbers of urethral catheterization indwelled in 24 h after treatment.</p><p><b>RESULTS</b>There were 2 cases (10.0%) with urethral catheterization in moxibustion group, 10 cases (50.0%) in hot compress group and 9 cases (45.0%) in infrared irradiation group. The urethral catheterization rate in moxibustion group was lower than that of the other two treatment programs (both P < 0.05).</p><p><b>CONCLUSION</b>Moxibustion can reduce much effectively the rate of urethral catheterization indwelled for urinary retention after hemorrhoid and fistula operation as compared with local hot compress therapy and infrared irradiation on the lower abdomen.</p>

Observation on therapeutic effect of electroacupuncture at Tianshu (ST 25) with deep needling technique on functional constipation / 中国针灸

<p><b>OBJECTIVE</b>To probe into a better therapeutic method for functional constipation.</p><p><b>METHODS</b>Ninety-five cases of functional constipation were randomly divided into deep puncture at ST 25 group (48 cases), shallow puncture at ST 25 group (24 cases) and medication group (23 cases). In deep puncture at ST 25 group, Tianshu (ST 25) was punctured deeply to the peritoneum, with electric stimulation. In shallow puncture at ST 25 group, Tianshu (ST 25) was punctured shallowly, 5 mm beneath the skin, with electric stimulation. In medication group, Duphalac was administered orally. These cases were treated continuously for 4 weeks in 3 groups and followed up for 6 months. It was to observe the numbers of person who had defecation 4 times a week, difference in weekly defecation frequency and the difference in the Cleveland Clinic Score (CCS).</p><p><b>RESULTS</b>In deep puncture at ST 25 group, the frequency of weekly defecation and the numbers of person who had defecation 4 times a week increased and CCS decreased, which were similar to the efficacy in shallow puncture at ST 25 group (all P > 0.05). But the efficacy of both ST 25 groups was superior to that in medication group (both P < 0.05). In comparison, the deep puncture at ST 25 group acted more quickly than either shallow puncture at ST 25 group or medication group and its efficacy remained much longer.</p><p><b>CONCLUSION</b>The deep puncture at ST 25 with electric stimulation presents similar efficacy on functional constipation as shallow puncture at ST 25, but it acts more quickly than shallow puncture at ST 25, both of them are more advantageous than medication and the long-term efficacy is better.</p>

Survey study of conditions of patients with acute stroke seeking for acupuncture treatment / 中国针灸

To explore possible factors that affecting patients with acute stroke seeking for acupuncture treatment by questionnaire survey. The average age of the 202 patients was 63.14. Before the survey, only 66 patients had received acupuncture treatment, and 136 patients did not consider accepting acupuncture treatment. After the survey, there were more patients want to accept acupuncture treatment (P < 0.05). Patients expressed three major opinions about acupuncture, i.e., lack of knowledge of acupuncture, analgesia after needling, and slow effectiveness. Patients lack awareness of acupuncture and cultural identity. Therefore, it is urgent to promote awareness of acupuncture, strengthen culture identity which will facilitate the development of acupuncture.

Observation on therapeutic effect of electroacupuncture at Chengshan (BL 57) and Changqiang (GV 1) on hemorrhoidal pain / 中国针灸

<p><b>OBJECTIVE</b>To assess the clinical effect of combination of far with near acupoints, Chengshan (BL 57) and Changqiang (GV 1), for acupuncture treatment of hemorrhoidal pain.</p><p><b>METHODS</b>One hundred and twenty cases of hemorrhoids with pain were randomly divided into 2 groups, an electroacupuncture group and a medication group, 60 cases in each group. The electroacupuncture group were treated by electroacupuncture at Changqiang (GV 1) and Chengshan (BL 57) with sparse-dense wave, frequency 2/100 Hz; and the medication group with oral administration of Tramadol and rectal application of Mayinglong Shexiang Zhichuang Suppository. The two group were treated for five days. Changes of pain were assessed by Visual Analogue Scale (VAS) scores at the defecation each day.</p><p><b>RESULTS</b>In the electroacupuncture group, VAS score was 6.64 +/- 3.66 before treatment and 5.65 +/- 2.21 on the second day of treatment with a significant decrease (P < 0.05), and 1.85 +/- 1.24 on the fifth day after treatment end. In the medication group, VAS score was 6.58 +/- 3.18 before treatment and 4.86 +/- 2.04 on the third day after treatment with significant decrease compared with that before treatment, and 2.24 +/- 1.46 on the fifth day. There was no significant difference between the two groups in the pain score on the fifth day after the treatment end.</p><p><b>CONCLUSION</b>Combination of Chengshan (BL 57) with Changqiang (GV 1) is effective for improvement of hemorrhoidal pain in defecation.</p>

Discussion on randomized controlled trials about clinical researches of acupuncture and moxibustion medicine / 中国针灸

The characteristics of clinical tests of acupuncture and moxibustion were analyzed by studies of the literature about clinical evidence-based trials of acupuncture and moxibustion medicine at present and on the basis of full analysis on the cause of insufficient evidence of clinical researches of acupuncture and moxibustion, in combination with the authors' experiences of clinical studies, and it is put forward that future clinical researches of acupuncture and moxibustion medicine should actively search for new research methods, insist evidence-based acupuncture and moxibustion medical researches, pay attention to retaining own researching characteristics of the acupuncture and moxibustion medicine, accumulate experiences, gradually establish and perfect the assessment system conforming with clinical research methods of acupuncture and moxibustion medicine, elevate the position of acupuncture and moxibustion medicine and develop the acupuncture and moxibustion medicine.

Transient analgesic effect of electroacupuncture at Taiyang (EX-HN 5) for treatment of migraine with hyperactivity of the liver-yang / 中国针灸

<p><b>OBJECTIVE</b>To explore the difference of therapeutic effects between electroacupuncture (EA) and medication for treatment of migraine with hyperactivity of the liver-yang.</p><p><b>METHODS</b>With 3-center randomized controlled study method, 300 cases were assigned to a treatment group and a control group, 150 cases in each group. They were treated respectively with EA at Taiyang (EX-HN 5) and oral administration of western medicine. Changes of the score for headache intensity, remission degree of headache and remission rate of headache after treatment were investigated.</p><p><b>RESULTS</b>After once treatment, VAS score of the headache intensity showed dynamical decrease in the two groups; in the treatment group the score reached the lowest 3-4 h after treatment, with the decreasing degree better than the control group (P < 0.01). The lasting time of headache remission was (388.6 +/- 430.1) min and (163.3 +/- 182.3) min, respectively, the treatment group being significantly longer than that of the control group (P < 0.01).</p><p><b>CONCLUSION</b>EA at Taiyang (EX-HN 5) has transient analgesic effect for treatment of migraine with hyperactivity of the liver-yang, which is better than that of routine western medication.</p>

Effect of rolling needle therapy on quality of life in the patient of non-organic chronic insomnia: a randomized controlled trial / 中国针灸

<p><b>OBJECTIVE</b>To probe therapeutic effect of rolling needle therapy on insomnia and standardize the therapeutic program.</p><p><b>METHODS</b>Multi-central randomized blind controlled trials were used, and 180 cases were randomly divided into a rolling needle group and a medication group, 90 cases in each group. The rolling needle group were treated with rolling needle therapy at the Urinary Bladder Channel line 1 and 2 at the back and the Governor Vessel, and the medication group with clonopin 4-6 mg, for 4 weeks. Effective rates for sleep disturbance improvement and Spitzer index of life quality were evaluated after 4 weeks' treatment and 3 months' follow-up.</p><p><b>RESULTS</b>The effective rate was 82.2% in the rolling needle group and 60.0% in the medication group with a significant difference between the two groups (P < 0.05), and with a significant difference between the two groups in Spitzer index of life quality (P < 0.05). After 3 months' follow-up, the effective rate was 40.0% in the rolling needle group and 30.3% in the medication group with no significant difference between the two groups (P > 0.05), and there was a significant difference between the two groups in Spitzer index of life quality.</p><p><b>CONCLUSION</b>Rolling needle therapy can treat chronic insomnia and increase life quality of the patient.</p>

A systematic evaluation of randomized controlled trials for acupuncture and moxibustion treatment of insomnia / 中国针灸

<p><b>OBJECTIVE</b>To assess the therapeutic effect of acupuncture on insomnia.</p><p><b>METHODS</b>A systematic evaluation of all relevant randomized controlled trials (RCT) about acupuncture and moxibustion treatment of insomnia was carried out. The data were statistically analyzed with a special software RevMan 4.1.</p><p><b>RESULTS</b>Six papers of RCT including 585 patients met the enrolled criteria. All of the trials were of lower in methodological quality without using blind method; Meta-analysis indicated that odds ratio was 3.55, 95% confidence interval [2.50, 5.05], P < 0.0001, as acupuncture group compared with drug group.</p><p><b>CONCLUSION</b>Acupuncture is possibly effective for insomnia. However, because of lower methodological quality of all the trials, this conclusion has no enough evidence.</p>

Inhibition of multidrug resistance gene 1 expression in glioma by antisense oligodeoxynucleotides / 中国医学科学院学报

<p><b>OBJECTIVE</b>To investigate the effectiveness of phosphorothioate multidrug resistance gene 1 (MDR1) antisense oligodeoxynucleotides (MDR1-AS) suppressing MDR1 expression in multidrug-resistant glioma cell line C6/adr.</p><p><b>METHODS</b>The glioma cell line C6/adr served as the tested model in vitro, MDR1-AS (5'-CTCCATCACCACCTC-3'), complementary to the -9- +6 sequence of first exon, was synthesized and phosphorothioate-modified. As control of sequence specificity, MDR1-S (5'-GAGGTGGTGA TGGAG-3') was used. Both antisense and sense oligodeoxynucleotides were transduced to C6/adr cells by lipofectin. The cytotoxity of MDR1-AS was tested using morphological observation and 3- (4,5-dimethylthiazol-2-yl) -2, 5-diphenyl tetrazolium bromide assay. Semi-quantitative reverse transcription polymerase chain reaction was used to monitor the expression levels of the MDR1 mRNA in the different groups. The positive rate of the MDR1 gene product P glycoprotein (P-gp) was determined by flow cytometry assessment.</p><p><b>RESULTS</b>No cytotoxicity of MDR1-AS was observed. The MDR1 mRNA expression level was decreased from 106% to about 30.44% 48 h after MDR1-AS treatment. The P-gp positive rate of MDR1-AS treated C6/adr cells decreased from 100% to 32.77%, with that of C6/adr cells considered as 100%.</p><p><b>CONCLUSIONS</b>MDR1-AS can effectively inhibit MDR1 expression in the C6/adr cell line at both the mRNA and protein level, and may be an alternative treatment of drug-resistant gliomas.</p>

Multicenter randomized controlled study on acupuncture-massage comprehensive program for treatment of cervical spondylosis of arterial type / 中国针灸

<p><b>OBJECTIVE</b>To probe into clinical value of the acupuncture-massage comprehensive program for treatment of cervical spondylosis of arterial type (CSA).</p><p><b>METHODS</b>By using three-center, single-blind, randomized, controlled method, the eligible subjects were randomly divided into an acupuncture-massage group, an acupuncture group, a massage group, 60 cases in each group. They were treated with acupuncture-massage comprehensive program, simple acupuncture and simple massage, respectively. And multiple-dimensional indexes were established to evaluate the therapeutic effect and safety.</p><p><b>RESULTS</b>The baselines of the general data were no different among the 3 groups. The cured-markedly effective and the effective rate were 68.3% and 88.3% in the acupuncture-massage group, 51.7% and 75.0% in the acupuncture group, and 50.0% and 76.7% in the massage group, respectively, the acupuncture-massage group being better than the other 2 groups (P<0.05); after treatment, the total cumulative scores for symptoms in the 3 groups decreased significantly (all P<0.01), the acupuncture-massage group being superior to the other 2 groups (P<0.05); and the physical signs in the 3 groups improved significantly (P<0.01), with no significant differences among the 3 groups (P>0.05); the time inducing the effect in the acupuncture-massage group was shorter than that in the other 2 groups (P<0.05 or P<0.01); and no adverse effects were found in the 3 groups.</p><p><b>CONCLUSION</b>This acupuncture-massage comprehensive therapy has a definite therapeutic effect on CSA with safety, and it is of superiority as compared with the simple acupuncture or the simple massage.</p>

Inhibition of multidrug resistance related P-gp expression in human neuroblastoma by antisense peptide nucleic acid / 中国医学科学院学报

<p><b>OBJECTIVE</b>To investigate the efficiency of a peptide nucleic acid (PNA) delivery system by using liposome via PNA-DNA hybrids and to test the inhibitive action of antisense PNA on expression of multidrug resistance (MDR) related P-glycoprotein (P-gp) in human neuroblastoma cell line SK-N-SH.</p><p><b>METHODS</b>Two antisense PNAs were designed targeting at MDR-1 mRNA and then combined with partially complement DNAs respectively. The hybrids were delivered into cells using cationic liposome. The transfection efficiency, expression of P-gp and MDR-1 mRNA, intracellular adarimycin (ADM) were measured by flow cytometry, reverse transcription-polymerase chain reaction (RT-PCR), and high performance liquid chromatography (HPLC).</p><p><b>RESULTS</b>Transfection of PNA increased the cell average fluorescence intensity significantly and the extent of increase was dependent on the concentration of PNA. After being transfected by both PNAs, P-gp expression of SK-N-SH cells decreased significantly and the intracellular ADM level was increased by about 3 times. The level of MDR-1 mRNA expression slightly decreased after transfection, but no statistical significance was observed.</p><p><b>CONCLUSIONS</b>PNA can be delivered into tumor cells in form of PNA-DNA hybrids by cationic liposome. Properly designed antisense PNA can inhibit MDR related P-gp expression of SK-N-SH cells efficiently and specifically.</p>

Establishment of drug-resistance cell line of human glioma mediated by MGMT / 中国医学科学院学报

<p><b>OBJECTIVE</b>To establish a drug-resistance cell line of human glioma mediated by MGMT.</p><p><b>METHODS</b>Simulated the clinical usage of BCNU to establish a BCNU-resistant human glioma subline by cyclic exposing the U251 parent cells to a constant concentration of BCNU. The resistance index and the expression of MGMT mRNA of U251/BCNU were detected and compared the difference of in vitro proliferation between U251 and U251/BCNU.</p><p><b>RESULTS</b>A subline--U251/BCNU was successfully established in about 4-month culture, which had a stable resistance to BCNU. U251/BCNU cells showed 17-fold higher resistance to BCNU than did U251 cells by MTT assay, while U251/BCNU cells expressed MGMT mRNA. The doubling time of U251 and U251/BCNU had no statistical difference.</p><p><b>CONCLUSION</b>A drug-resistance cell line of human glioma mediated by MGMT is established, which could provide experimental basis for further studies on the resistance mechanism and reversal methods of glioma chemotherapy.</p>

The study of biological properties of gliomas / 中国医学科学院学报

In order to explore the new methods of biological treatment of human gliomas, this project is to study the biological properties of gliomas from four different aspects, the results show that there is a IL-6 autocrine loop in human gliomas and the growth of gliomas will be inhibited when the autocrine loop is broken. There is a magnificent predominant expression of Th2 cytokines in human gliomas and human glioma cells, the switching of Th2 to Th1 can inhibit the proliferation of glioma cells. The dosage of 100 micrograms/ml of erythromycin is the best of therapeutic effect. Angiostatin can not only inhibit the vascular endothelial growth, but also have the inhibitory role on the growth of glioma cells in vivo. The above studies have provided some new ideas and will be very helpful for the treatment of glioma patients.

Rat model for the multidrug resistant glioma cell line / 中国医学科学院学报

<p><b>OBJECTIVE</b>To evaluate the animal model of the multidrug resistant glioma cell line C6/adr for further in vivo studies.</p><p><b>METHODS</b>The rat glioma cells C6 and multidrug resistance cells C6/adr were cultured in vitro and implanted into the brain of S-D rats. After implantation, all these animals were examined continually with magnetic resonance imaging (MRI) and histological examination. The growth procedure of intracranial implanted glioma and the survival span of the animal model were evaluated. The statistical analysis was made between the survival data of the two cell lines.</p><p><b>RESULTS</b>The symptoms of intracranial hypertension did not occur until 4 weeks after inoculation. The MRI findings of the implanted glioma in the rat brain were much earlier than the abnormal behavior observed. Pathological results after inoculation demonstrated the MRI findings. The two cell lines had similar growth characteristics and no significant differences in survival times.</p><p><b>CONCLUSION</b>These results suggest that by means of MRI and histology the growth procedure of the implanted glioma in vivo be successfully observed. All these data will proved to be a useful basis for study of glioma in vivo.</p>