Objective To discuss the technical specifications of current high-frequency electrotome detection,to avoid the hidden danger of high-frequency electrotome power detectors,and to measure the leakage current of different kinds of highfrequency electrotome accurately.Methods The power and leakage current of the high frequency electrotome were measured by FLUCK QA-ES Ⅱ high frequency electrotome analyzer.The safety of the two methods was compared before and after the improvement of the power measurement.Four parameters of leakage current were repeatedly measured with the ways of high frequency earthing and high frequency isolation respectively.The maximum measurement of leakage current was recorded.Results The improved connection method was safe in the power measurement.For the high-frequency electrotome in the model of high frequency earthing,the values of leakage current were restrained within the range of error with two ways of monopolar loading operation electrode and neutral electrode.For the high-frequency electrotome in the model of high frequency isolation,the values of leakage current were limited within the range of error withtwo ways of monopolar empty operation electrode and neutral electrode.Conclusion The improved high-frequency electrotome power detection method is safe for detectors.The data obtained from the leakage current detection method using the national standard correction method reflect the actual state of the high-frequency electrotome,when the electrotome with earth as the reference is used to detect the leakage current with loading or the insulated electrotome is applied to measuring the leakage current with no loading.

OBJECTIVETo explore the clinical effects of delayed open reduction and locking compressing plate (LCP) plus bone-grafting in medullary cavity for the distal comminuted fractures of tibia.

METHODSTwenty-nine patients with the distal comminuted fractures of tibia were treated between March 2006 and September 2008, including 19 males and 10 females, ranging in age from 27 to 58 years with an average of 42.5 years. From wounded to hospital, the time was from 2 to 4 hours. According to AO classification, type 43-A1 were in 3 cases, type A5 in 12 cases, type A3 in 9 cases and type 43-C1 in 5 cases. Among them, there were 11 cases with open fracture (type Gustilo I in 5 cases, type Gustilo II in 6 cases) and 18 cases with closed fracture. Calcaneal traction was done in earlier stage (plaster external fixation in 5 cases), keeping the nagative liquid balance and electrolyte balance and improving the microcirculation. After the swolen limbs relieved markedly in 8 to 12 days,operating was done by open reduction and LCP internal fixation plus bone-grafting with own ilium in medullary cavity. Functional exercise was undergone in earlier stage and the wounded limbs loading weight on 10 to12 weeks after operation when the X-ray revealed the callus formed markedly.

RESULTSThe incision healed well without severe complication. All patients were followed up for from 6 to 14 months with an average of 12 months. All cases obtained bone union. According to the Mazur's evaluation standard, the results were excellent in 25 cases, good in 3 cases, and fair in 1 case.

CONCLUSIONThe above treatment can reduce the damage of periosteum and medullary cavity, shorten the time of bone healing and decrease the rate of bone nounion markedly. The internal fixation was reliable and less complacation after surgery, but it is very important for the right preoperation assessment to soft tissue injuries and the good operation timing choice.

Adult ; Bone Plates ; Bone Transplantation ; Female ; Humans ; Male ; Middle Aged ; Postoperative Complications ; Tibial Fractures ; diagnostic imaging ; physiopathology ; surgery ; therapy ; Time Factors ; Tomography, X-Ray Computed ; Treatment Outcome

Carotid Artery, Internal/surgery* ; Carotid Stenosis/surgery* ; Endarterectomy, Carotid ; Humans ; Treatment Outcome

Objective To observe the clinical efficacy of electroacupuncture (EA) in treating knee osteoarthritis (KOA).Method Sixty KOA patients were randomized into a treatment group and a control group by using random number table, 30 cases each. The control group was intervened by oral administration of Celecoxib capsules, while the treatment group was given EA, 14 d as a treatment course. The changes of relevant cytokines [apelin, tumor necrosis factor (TNF)-α, TNF soluble receptor (TNFsR)-Ⅰ, TNFsR-Ⅱ, interleukin (IL)-1β, and IL-6] in serum of the two groups were observed.Result The intra-group comparisons of the total score, and the scores of pain, stiffness and dysfunction of the Western Ontario and McMaster Universities (WOMAC) osteoarthritis index showed significant differences in both groups (P<0.05); there were significant between-group differences in comparing the total score, and the scores of pain, stiffness and dysfunction of the WOMAC index after the treatment (P<0.05). The Visual Analogue Scale (VAS) scores were changed significantly after the intervention in both groups (P<0.05); there was nosignificant difference in comparing the VAS score between the two groups after the treatment (P>0.05). The levels of IL-6, TNF-α and TNFsR-Ⅰ were significantly changed after the treatment in both groups (P<0.05); the level of IL-1β was markedly changed after the intervention in the control group (P<0.05); there was a significant change in the level of apelin after the intervention in the treatment group (P<0.05), and there was a significant difference in comparing the level of apelin between the two groups after the treatment (P<0.05).Conclusion EA can produce a satisfactory efficacy in treating KOA; it can significantly improve the symptoms and signs, and mitigate pain and symptoms through regulating the expressions of cytokines.

Objective To evaluate the enhanced magnification endoscopy in the diagnosis of Barrett esophagus,and to explore the relationship between mucosal surface patterns and pathological epithelial types of Barrett esophagus.Methods Enhanced magnification endoscopy was performed 'after spraying 2%-3% acetic acid on the surface of distal esophagus in 40 Barrett esophagus patients.Mucosal specimen were biop- syed.Results According to the mucosal types of Toyoda in 2003,there were three mucosal types:Ⅰ dot pat- tern 7(17.5%),5 of 7(71.4%)fundie type,Ⅱ reticular pattern 24(60.0%),16 of 24(66.7%)fundic type,Ⅲ cerebroid/villous 9(22.5%),intestinal metaplasia or dysplasia.Conclusion Enhanced magnifi- cation endoscopy helps to identify areas with intestinal metaplasia and dysplasia,and is useful in the diagno- sis of Barrett esophagus.

Fingerprint technology is the key technology in modern Chinese medicine research, while spectrum-effect relationship research is the advanced stage of fingerprint research. Spectrum-effect relationship research can reveal the relationship between fingerprint and pharmacological effect through multiple statistical analyses, which can be used in Chinese medicine research. Spectrum-effect relationship has been used in many areas of Chinese medicine research, such as effective basis of single and compound Chinese medicine research, component compatibility research, processing mechanism research, pharmacological effect forecast research, technology optimization research, and so on. This paper systematically reviewed the application of spectrum-effect relationship in Chinese medicine research, and indicated some problems in spectrum-effect relationship research. At last, the authors give an outlook of the future of spectrum-effect relationship research.
Animals ; Biomedical Research ; China ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Spectrum Analysis

OBJECTIVETo study the effects of gonadotroph-releasing hormone (GnRH) agonist (GnRH-a) and GnRH antagonist (GnRH-ant) on cyclophosphamide (CTX)-induced follicle apoptosis in female rats.

METHODSThirty-six female Sprague- Dawley rats were randomized into 6 groups, namely normal saline (NS), CTX, GnRH-a+NS, GnRH-a+CTX, GnRH-ant+NS, and GnRH-ant+CTX groups. The rats were sacrificed between the first and second week after the treatments., and the follicle apoptosis was investigated using TUNEL assay and transmission electron microscopy.

RESULTSThe apoptosis rate of the granulose cells in the follicles in late development was significantly higher than that in early follicles, and the apoptosis rate of the oocytes and granulose cells in rats with CTX treatment was significantly higher than that in rats without CTX treatment (P<0.05). The apoptosis rate of the granulose cells in GnRH-a groups (ranging from 33.40 - or + 4.59 to 73.25 - or + 5.35) was significantly higher than that in GnRH-ant groups (27.46 - or + 4.52 to 49.38 - or + 5.02, P<0.05), but there was no significant difference in the oocytes of early follicles between GnRH-a groups (23.48 - or + 4.25 to 36.15 - or + 4.23) and GnRH-ant groups (21.47 - or + 3.81 to 34.04 - or + 5.54, P>0.05). Electron microscopy revealed characteristic apoptotic changes of the oocytes in early follicles and granulose cells in early and late follicles. The apoptotic changes were especially typical in the granulose cells showing the formation of the apoptotic bodies, and the oocytes only showed chromatin condensation and aggregation.

CONCLUSIONIn the rat mode, GnRH-a promotes while GnRH-ant suppressed follicle apoptosis induced by CTX. GnRH analogues regulates mainly granulose cell apoptosis, but have little effect on oocyte apoptosis.

Animals ; Apoptosis ; drug effects ; Cyclophosphamide ; toxicity ; Female ; Gonadotropin-Releasing Hormone ; analogs & derivatives ; antagonists & inhibitors ; Granulosa Cells ; pathology ; Oocytes ; pathology ; Ovarian Follicle ; pathology ; Random Allocation ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo study the effect of gonadotroph-releasing hormone (GnRH) agonist (GnRH-a) and GnRH antagonist (GnRH-ant) against cyclophosphamide (CTX)-induced gonadotoxicity in female rats.

METHODSThirty-six female SD rats were divided randomly into 6 groups to receive treatment with normal saline (NS), CTX, GnRH-a+NS, GnRH-a+CTX, GnRH-ant+NS, GnRH-ant+CTX, respectively. The rats were sacrificed between the first and second week after termination of the medication to compare the weight of the ovaries, the number of the primordial follicles and the follicle growth. The expressions of bcl-2 and bax mRNA in the ovaries were examined using RT-PCR.

RESULTSThe number of the primordial follicles was significantly greater and that of the growing follicles significantly lower in GnRH-a+NS and GnRH-a+CTX groups than in the GnRH-ant+CTX and CTX groups (P<0.05). The rats in GnRH-a+NS and GnRH-a+CTX groups had the lowest ovarian weight among 6 the groups (P<0.05). The bcl-2 mRNA level in the GnRH-ant+NS group was significantly higher than that in the other groups (P<0.05). The Bax mRNA in the GnRH-a+NS and GnRH-a+CTX groups was significantly higher than that in the NS group (P<0.05), but close to that in the CTX group (P>0.05); bax mRNA expression in the GnRH-ant+NS group was significantly lower than that in the NS group (P<0.05), but in GnRH-ant+CTX group, its expression was close to that in the NS group (P>0.05).

CONCLUSIONSIn female rats exposed to CTX, the GnRH analogs provides ovarian protection against CTX-induced gonadotoxicity by regulating the expression of the Bax mRNA in the ovary. GnRH-a may decrease the sensitivity of the follicles to CTX-induced gonadotoxicity by promoting follicle apoptosis and inhibiting follicle proliferation, and GnRH-ant increases the sensitivity to the CTX through a reverse effect on the follicles.

Animals ; Apoptosis ; drug effects ; Cyclophosphamide ; antagonists & inhibitors ; pharmacology ; Female ; Gonadotropin-Releasing Hormone ; agonists ; antagonists & inhibitors ; Ovary ; drug effects ; metabolism ; pathology ; Proto-Oncogene Proteins c-bcl-2 ; genetics ; metabolism ; RNA, Messenger ; genetics ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; bcl-2-Associated X Protein ; genetics ; metabolism

OBJECTIVETo evaluate the efficacy and safety of modified FOLFIRI regimen in advanced colorectal cancer (CRC) patients refractory to fluoropyrimidine and oxaliplatin.

METHODSThe modified FOLFIRI regimen consisted of intravenous infusion of irinotecan 180 mg/m2 d1 + LV 200 mg/m2 dl + 5-Fu 400 mg/m2 bolus dl plus 46-hour intravenous infusion of 5-Fu 2.4 g/m2, every 2 weeks as one cycle. The main selection criterion for this study was the advanced CRC refractory to fluoropyrimidine and oxaliplatin.

RESULTSOf the 80 evaluable patients for efficacy: 10 (12.5%) had a partial response, 51 (63.7%) stable disease, and 19 (23.8%) progressive disease. The median time to progression was 96 days. Safety analysis was based on the data of 83 evaluable patients. The most frequently observed grade 3 or 4 toxicities were neutropenia (24.1%), nausea/vomiting (8.4%), and diarrhea (2.4%).

CONCLUSIONModified FOLFIRI regimen is effective and well tolerated in patients with advanced colorectal cancer refractory to fluoropyrimidine and oxaliplatin.

Adult ; Aged ; Antineoplastic Agents ; therapeutic use ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Camptothecin ; adverse effects ; analogs & derivatives ; therapeutic use ; Colonic Neoplasms ; drug therapy ; pathology ; Diarrhea ; chemically induced ; Female ; Fluorouracil ; adverse effects ; therapeutic use ; Humans ; Leucovorin ; adverse effects ; therapeutic use ; Male ; Middle Aged ; Nausea ; chemically induced ; Neoplasm Staging ; Neutropenia ; chemically induced ; Organoplatinum Compounds ; therapeutic use ; Prospective Studies ; Pyrimidines ; therapeutic use ; Rectal Neoplasms ; drug therapy ; pathology ; Remission Induction ; Treatment Failure

This study was aimed to establish a model for detecting the donor chimerism rate following the multi-donor hematopoietic stem cell transplantations, and simplify its calculation method. Patients with hematologic disease receiving allogeneic hematopoietic stem cell transplantation including single-donor and multi-donor were selected in this study and the donor cell chimerism rates were detected, using STR-PCR combined with capillary electrophoresis. The results indicated that the peaks of the sister alleles coming from the same individual were confirmed to have the approximate areas and can be replaced each other in the situation of mixed chimerism. In the calculation model, the value between reference chimerism and approximate chimerism have no significant difference using the hypothetical peak areas, and the result was confirmed to be accepted basing on typical measurement error between sister alleles (5% - 20%). It is concluded that the areas of share peaks can be replaced by non-share peaks and this conclusion can be used to calculate the double-donor CHM (DD-CHM)(%). Compared to the D alleles, R alleles show more strategic importance because it can lead to more accurate result and allowed simplifying the arithmetic calculations for DD-CHM(%).
Alleles ; Electrophoresis, Capillary ; Hematopoietic Stem Cell Transplantation ; Humans ; Polymerase Chain Reaction ; Postoperative Period ; Tissue Donors ; Transplantation Chimera ; genetics ; Transplantation, Homologous