AIM: To observe the synergetic analgesic effects of low dose of haloperidol, a dopamine antagonist and under-threshold dose of morphine on mice induced by thermal and acetic acid, and to analyze the major mechanism of their synergetic actions. METHODS: To examine the analgesic synergetic effect of haloperidol (0.315 mg/kg, 0.625 mg/kg, 1.25 mg/kg, ip respectively), morphine (3.125 mg/kg, 6.25 mg/kg, 12.5 mg/kg ip, respectively) or combining effect of haloperidol (0.3125 mg/kg) with morphine (3.125 mg/kg) on mice, we compared the change of pain threshold stimulated by thermal, latent period of twisting, the number of times of twisting by acetic acid, and we also estimated the antagonistic effect of d -amphetamine (10 mg/kg) and naloxone (5 mg/kg) on haloperidol and morphine group. RESULTS: Combination of haloperidol with morphine significantly enhanced pain threshold of mice induced by thermal, prolonged latent period of twisting and decreased the number of times of twisting. Naloxone markedly antagonized the combination of analgesic action of haloperidol and morphine and not d -amphetamine. CONCLUSION: Combination of haloperidol with morphine have synergetic analgesic effect and morphine is the dominant factor.

The treatment of lower extremity chronic refractory ulcers requires a long time but with poor prognosis. Thus, many patients end up with amputations. The treatment of lower extremity chronic and recalcitrant ulcers and limb salvage has been a challenge worldwide. The Ilizarov technique based on the law of "tension-stress" brings a new hope in treating lower limb chronic and recalcitrant ulcers. The Ilizarov technique and distraction osteogenesis not only induce bone formation but also lead to angiogenesis and improved microcirculation. The Ilizarov technique consists of longitudinal distraction of long bone and tibia trans-verse transport (TTT) (proximal tibial corticotomy followed by transverse distraction). These two techniques have their own advantages and disadvantages with different indications in clinical application. Longitudinal distraction of long bone is mainly used for bone formation, such as large bone defects, osteonecrosis or bone infection (with or without soft tissue loss or ulcers). Because of only a partial osteotomy in TTT, the trauma is minor and their effects on limb instability are limited. Moreover, the procedure is simple with only a few minor complications. Thus, it is ideal in treating lower limb ischemic ulcers, such as diabetic foot ulcers, thromboangiitis obliterans (Buerger's disease), ulcers caused by atherosclerotic occlusion, arterial or venous ulcers, and trauma wounds. Several studies reported that TTT achieved high healing and limb salvage rates in treating severe diabetic foot ulcer. However, TTT could achieve lower recurrent rate. Thus, it is the most successful application in treatment of chronic ulcers. TTT also improves healing and limb salvage in treatment of thromboangiitis obliterans. However, the overall effects are limited than those in treating diabetic foot ulcer. For lower limb atherosclerosis occlusion, TTT induces regeneration of microvessles and consequently leads to ulcer healing. The effects are better than other conventional treatments. A combination therapy with vascularization is emphasized to attain the optimal long-term effects. The effects of TTT on lower limb recalcitrant ulcers still need to be validated in randomized control trial with larger sample size. Further, the mechanism of treatment needs to be explored by pilot studies which could show that this may be related to the formation of pro-angiogenetic factors and a rebalance of the inflammatory microenvironment during TTT.

To developing a simple, rapid and sensitive immunoaffinity method for extracting DNA before amplification by the polymerase chain reaction(PCR). Using monoclonal anti-DNA bound to colloidal-gold beads(which called immunocolloidal-gold ) and extracting DNA from the specimen before amplification by PCR. The immunoaffinity method we use is extremely efficient in extracting DNA at low concentration, also, the beads carrying the DNA/anti-DNA complexes can be added directly to a PCR mixture without elution, and the presence of PCR inhibitors in specimens has no effect on amplification. When applied to serial dilution bacteria suspension, the detection of limit can be 100 CFU/mL, and the sensitivity of detecting artificial soil sample and milk sample were 101 and 100 CFU/mL. The immunoaffinity method described here can sever as a sensitive and practicable method for extracting DNA , particularly where samples have low concentrations of DNA or where the material is in poor condition.

Epigenetics comprises the modifications made in gene expressions without changing the DNA sequence itself. Significant epigenetic changes take place during spermatogenesis and fertilization and exert direct influences on embryogenesis. This article provides an overview of the latest researches on epigenetics of male germ cells and a brief discussion on the correlation of sperm with embryogenesis in four aspects: DNA methylation, histone modification, regulation of non-coding RNAs, and genomic imprinting.
Animals ; DNA Methylation ; Embryonic Development ; Epigenesis, Genetic ; Genomic Imprinting ; Histones ; metabolism ; Humans ; Male ; Spermatozoa

Objective To verify whether iron can accelerate the process of liver fibrosis in rats. Methods The rats were divided into control group, high fat diet group, high iron group, high fat diet and high iron group, high fat diet and de?iron group, each with 24 rats. The rats were allowed to freely take normal diet and high fat diet, while the high iron rats, high?fat diet plus high iron rats received intramuscular injection of 50 mg/kg iron dextran every other day;high?fat di?et plus de?iron group rats received tail intravenous injection of 30 mg/kg deferoxamine one month before death, 3 times/week. 8 rats were selected at 4th, 5th, 6th month of intervention, to detect serum hyaluronic Acid (HA), collagen type IV ( COL?IV) , laminin ( LN) , procollagen III ( PC III) , and observe pathological changes in the liver with Masson staining. Results At 5th month of intervention, serum HA level of the high?fat diet plus high iron group was significantly higher than those of high fat diet group and control group. At 6th month of intervention, serum COL?IV and LN levels of the high?fat diet plus high iron group were significantly higher than those of the high fat diet group. At 6th month, serum PC III level was 1. 63 time of those of the high fat diet group. At the 6th month, liver tissue of high fat diet plus high iron group ap?peared collagen deposition revealed by Masson staining, which was not the case in other groups. Conclusions Iron can accelerate high fat?induced liver fibrosis.

Through the construction practice of the optic nerve disease picture database,the paper discusses the system architecture,database field,data content,picture processing,organization and implementation,and other issues about the construction of the clinical case picture database,states and analyzes the operation effect,points out deficiencies,and provides reference for the construction of relevant picture databases.

Background Even though the change in wavefront aberrations with correction modality is well documented in the literature,little is known about the underlying mechanism.Complete understanding of the causes responsible for the wavefront change in the combined lens-eye system is important since it provides basic knowledge for further improving the technique to correct refractive error by correcting lenses.Objective The aim of this study was to investigate the influence of refractive correction lens on optical property of the eye by analyzing Zernike aberrations in myopic eyes with contact lens correction.Methods This study was approved by the Ethic Committee of Wenzhou Medical College.Written informed consent was obtained from each subject before entering this study.Zernike aberrations of 52 myopic eyes of 26 subjects with the spherical equivalent-1.75 to-8.50 D were measured using a Hartmann-Shock wavefront sensor.The human eye aberrations were examined at the uncorrected condition,rigid-gas-permeable contact lens (RGP-CL) corrected condition and soft contact lens (Soft-CL) corrected condition.The differences of wavefront aberrations and Zernike coefficients were compared by repeated measurement of single factor variance analysis,and correlation of the aberration changes between uncorrected condition and RGP-CL corrected condition or Sofi-CL corrected condition,between the right eyes and left eyes in different conditions were analyzed by Pearson linear correlation.Results Mean total root-mean-square (tRMS) was (0.71 ± 0.30)μm,(0.54±0.19)μm and (0.74±0.32)μm in the uncorrected condition,RGP-CL corrected condition and Soft-CL corrected condition,with a significant difference (F =8.758,P＜0.001),and tRMS was significant declined under the RGP-CL corrected condition compared with uncorrected condition (t =2.746,P =0.008),and tRMS in RGP-CL corrected condition was significantly lower than that in Soft-CL corrected condition (t =3.428,P =0.001).The high RMS (hRMS) was (0.34±0.12) μm,(0.28 ±0.12) μm,(0.40±0.14) μm in the uncorrected condition,RGP-CL corrected condition and Soft-CL corrected condition,with a significant difference among them (F =10.681,P＜0.001).An insignificant decrease of hRMS was seen in the RGP-CL corrected condition compared with uncorrected condition (t =1.987,P=0.053),but hRMS value was significant higher in the Soft-CL corrected condition than that in the uncorrected condition (t=2.101,P=0.041) and RGP-CL corrected condition (t=4.266,P＜0.001).Compared with uncorrected condition,the axis astigmatism (C5) and spherical aberration (C12) in the RGP-CL corrected condition and spherical aberration (C12) in the Soft-CL corrected condition were significantly reduced (P＜0.05),and the absolute values of trefoil (C6),vertical coma (C7) and tetrafoil (C10) in the RGP-CL corrected condition were lower than those of the uncorrected condition,but vertical coma (C7) absolute value in the Soft-CL corrected condition was increased (P＜0.05).A significantly positive correlation was seen in the spherical aberration (C12) between the RGP-CL corrected condition and uncorrected condition (r =0.763,P＜0.001),and less significant correlation was in the secondary astigmatism (C11) between the Soft-CL corrected condition and uncorrected condition(r=0.469,P＜0.001).Conclusions Different contact lens corrected conditions exert their effects on ocular wavefront structure due to its unique interaction with the eye.RGP-CL wearing has strong modification on wavefront aberrations probably due to its molding effect on corneal surface,which reduces the bilateral symmetry.High order wavefront aberration can be modified by Soft-CL wearing.

Objective:To evaluate the clinical features of non-ST-segment-elevation myocardial infarction(NSTEMI)patients with renal dysfunction and investigate correlation factor for in-hospital death and 6 months adverse events of NSTEMI patients.Methods:One hundred and sixteen patients presenting with NSTEMI were enrolled between January 2006 and September 2007.Estimation of glomerular filtrate rate(eGFR)was conducted by the modified abbreviated MDRD equations based on the Chinese CKD patients.Renal dysfunction was defined as eGFR

Aim To study absorption characteristics of SM-1 , a novel anti-tumor agent , to provide a research basis for the druggability evaluation of SM-1 and formu-lation design. Methods Caco-2 cell monolayer model and in situ single-pass intestinal perfusion rat model were used to study the absorption characteristics of SM-1 , and the absorption of SM-1 in vivo was evaluated through absolute bioavailability study in rats. Results The results of cell monolayer model showed that cu-mulative absorption and efflux of SM-1 increased line-arly with concentration ( 10 ~40 mg · L-1 ) . There were no significant differences in Papp with different concentrations ( P>0. 05 ) . SM-1 was absorbed mainly through passive diffusion. The intestinal perfusion re-sults showed that Ka and Pef of SM-1 had no significant differences ( P > 0. 05 ) , when the concentrations ranged from 25 to 100 mg · L-1 . SM-1 entered the systemic circulation mainly via on passive diffusion, indicating it is a compound with high permeability. The absorption of SM-1 in duodenum was superior to other intestinal segments ( P <0. 05 ) , there were no significant differences in the jejunum, ileum and colon ( P >0. 05 ) . The absolute bioavailability of SM-1 in rats was 29. 3%. Conclusion The membrane perme-ability of SM-1 is high and it can be absorbed by intes-tine well. The absorption mechanism of SM-1 is pas-sive diffusion, and it possibly escapes from the efflux transporter protein. The absolute bioavailability of SM-1 in rats is low.

Objective To investigate the expression of BAMBI in pancreatic carcinoma tissue and its clinical value.Methods Expression of BAMBI was detected by immunohistochemistry in 69 cases of pancreatic cancer and 15 normal pancreatic samples.The survival and its association with clinicopathologic parameters were analyzed.Results The expression of BAMBI in the cancer tissue was much higher than that in the normal tissues (56.5％ vs 16.7％,P ＜0.01).The expression of BAMBI was not associated with age,sex and tumor size,differentiation,but expression of BAMBI in patient with lymph node metastasis was higher than that in patient without lymph node metastasis (67.4％ vs 38.5％,P =0.019),the expression of BAMBI in TNM stage Ⅲ was higher than that in stage Ⅰ + Ⅱ (75.0％ vs 31.0％,P =0.001).The median survival of BAMBI-positive group (6 months) was lower than that of BAMBI-negative group (10 months).Conclusions BAMBI is over-expressed in pancreatic carcinoma,and its expression is associated with lymph node metastasis,TNM staging,differentiation and prognosis.