Rectal cancer is a common malignancy in the alimentary tract with an increasing incidence, the current treatments of which include surgery, radiotherapy, chemotherapy, and integrated comprehensive options. Sexual dysfunction, especially erectile dysfunction (ED), is one of the commonest complications in men after rectal cancer treatment and is generally attributed to the damage to the pelvic autonomic nerves. However, recent studies show that ED after rectal cancer treatment is a complex pathophysiological process associated with neurogenic, vasculogenic, and psychological factors. This article reviews the pathogeneses of ED after rectal cancer treatment in order to provide some theoretical evidence for its prevention and treatment.
Erectile Dysfunction ; etiology ; Humans ; Male ; Postoperative Complications ; etiology ; Rectal Neoplasms ; surgery

Objective To explore the mucosal healing quality of hydrotalcite combined with esomeprazole in gastric ulcer.Methods Forty-two patients visiting from June 2014 to December 2015 and diagnosed with gastric ulcer were selected and divided into combination therapy group and single therapy group with 21 patients in each group.The patients of combination therapy group received esomeprazole combined with hydrotalcite,and the patients of single therapy group received esomeprazole alone.The total therapeutic course was eight weeks.At the same period,21 health check-up participants were enrolled as normal control group.The healing of gastric ulcer was observed under white light endoscopy.The morphological changes of gastric pits and microvessel of mucosal at peripheral mucosa around ulcer and normal gastric mucosal were observed under narrow band imaging magnifying endoscopy.The gastric mucosa tissues of the two groups before and after treatment,and normal gastric mucosa of healthy control group were taken.The amount of deposition and composition of collagen fibers,the expression level of factor Ⅷ,the level of transforming growth factor (TGF)-beta1 and the content of hydroxyproline were analyzed by Masson,immunofluorescent and immunohistochemistry staining as well as enzyme linked immunosorbent assay.Chi square test,one-way analysis of variance (ANOVA),least significant difference (LSD) method,Dunnett's T3 and Kruskal-Wallis test and other method were used for comparison.Results After treatment,18 patients of combination therapy group (21 patients) had regular microvessel nets (85.7％),which was significantly more than those of single therapy group (12 cases,57.1％) and healthy control group (10 cases,47.6 ％),and the differences were statistically significant (x2 =4.200,P=0.040).In the comparison of maturity of regenerative mucosa between combination therapy group and single therapy group after treatment,the ration between collagen type Ⅰ and Ⅱ,deposition of collagen fibers,the number of factor Ⅷ positive cells,the level of TGF-beta1 and the content of hydroxyproline were 36.05 and 23.14;269 375.63.± 171 608.63 and 137 693.14±98 330.93;34.91±8.40 and 28.24±6.93;104 498.71±40 487.96 and 70 757.11±19 323.95;(1 897.80±879.35) and (1 230.57±536.05) μg/L,respectively;while in healthy control group,the above parameters were 36.81,245 696.90 ± 224 687.00,23.10 ± 8.40,94 048.04 ±41 306.55 and 1 681.20 ± 423.61 μg/L,and the differences were statitically significant among these three groups (H=7.375,F=3.465,11.680,5.190,5.160;all P＜0.05).Those parameters of combination therapy group were significantly higher than those of single therapy group (H=2.416,LSD method;all P＜0.05).Conclusion Hydrotalcite combined with esomeprazole in the treatment of gastric ulcer could significantly improve microvessel morphology,maturity degree of regenerative mucosal structure and function,and the mucosal healing quality was also superior to single esomeprazole group.

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.

Aim To study relative bioavailablity of cefaclor effervescent tablets in healthy volunteers. Methods According to the crossover design, A volunteers were each orally given a single does of the 0.75 g cefaclor effervescent tablets and cefaclor capsules with an interval of 5 days between the two formulations.The plasma concentrations of the drug were determined by RP-HPLC.Pharmacokinetic parameters were obtained by ATPK programe,and calculated on the basis of open single compartment model.Results After a single oral dose, the peak levels in plasma averaged Cmax(31.27?5.81)?g?ml-1 and(30.56?5.25) ?g?ml-1 at (0.58?0.12)h and(0.73?0.17)h and AUC0～4(35.48?4.65) ?g?h?ml-1 and (35.89?2.90) ?g?h?ml-1 for tablet and capsule,respectively. Conclusion The result shows that two formulations are bioequivalence.

Objective To investigate the influence of parental compliance on the therapeutic effect of children with epilepsy.Methods Two hundred and sixty children with epilepsy and their parents admitted to the First People's Hospital of Wenling from December 2013 to June 2016 were enrolled,and the classical Morisky medication adherence questionnaire (MMAS-8) was applied to evaluate the compliance of parents for treatment of their children with epilepsy;after the patient taking drug for 3 days,fasting venous blood was collected in the morning,the concentration of the blood drug was tested and the influence of parent compliance on the blood drug concentration of the child with epilepsy was evaluated.Results In 260 patients,122 cases took karma form,and 138 cases took valproate orally.There were parents with good medication compliance in 130 cases (50％),medium medication compliance 80 cases (30.76％) and poor adherence to the doctor order in 50 cases (19.23％).In cases using medication irregularly,there were 26 cases sometimes without taking any drug (10.0％),17 patients' medication being interrupted (6.54％) and 10 cases having excessive medication (3.85％);no relationships were found between parental compliance and each of the following items,family role,occupation and age (all P ＞ 0.05);and the compliance was related to gender,indicating that women's good compliance level was higher than that of males';the education level was positively proportional to the compliance,and the compliance of parents with senior high school or above degree was higher than those with primary school and junior secondary school levels (83 cases vs.9 cases,38 cases,both P ＜ 0.01).Under situation of parents with poor compliance,their children had blood drug concentration higher or lower than proper range of drug level (high in 22 cases,low in 41 cases,higher than the result in good compliance 0 cases and 17 cases respectively),thus seriously affected the safety and efficacy of the treatment;the patients' frequency of irregular medication in parents' good compliance group was significantly lower than that in parents' poor compliance group [3.08％ (4/130) vs.72.0％ (36/50),P ＜ 0.05].Conclusion To improve the therapeutic effect of epileptic children,their parental good cooperation is necessary.

Objective To explore the influence of fluorine on mRNA and protein expression of the insulin-like growth factor-1 (IGF-1) and its receptor of rat osteoblasts.Methods Osteoblasts were isolated from rat bone by enzyme digestion.Different fluorine concentration [0 (control),10-7,10-6,10-5,10-4,10-3 mol/L] was add to the second generation osteoblasts.The IGF-1 in the culture medium was determined by radioimmunoassay (RIA) at different fluorine concentration and different time (24,48 h).The expression of IGF-1 receptor was measured by the method of fluorescent quantitation PCR and the expression of protein IGF-1 receptor was measured by Western blotting.Results ①With increased dose of fluoride exposure,IGF-1 concentration in the osteoblastic culture medium increased first and then decreased at 24,48 h,respectively.Compared to the control group [(38.83 ± 3.48)ng/L],IGF-1 concentration of the 24 h 10-6 mol/L group[(65.45 ± 4.84)ng/L] was higher,and the difference was statistically significant(P ＜ 0.05).The same result was also shown in the 48 h 10-5 mol/L group [(59.14 ± 1.53)ng/L] to its corresponding control group [(33.79 ± 1.84)ng/L,P ＜ 0.05].②The mRNA expression of IGF-1 receptor of the 24,48 h 10-5 mol/L groups (0.0055 ± 0.0004,0.0262 ± 0.0040) was significantly higher than their corresponding control groups (0.0022 ± 0.0001,0.0073 ± 0.0008,all P ＜ 0.05).③With increased dose of fluoride exposure,the protein expression of IGF-1 receptor increased first and then decreased ;the expression of 24 h 10-5 mol/L group (1.39 ± 0.16) was compared with the corresponding control group (0.86 ±0.12),and the difference was statistically significant (P ＜ 0.05) ; the expression of 48 h every fluorine group was also compared with the corresponding control group,and the difference was not statistically significant(all P＞ 0.05).Conclusions Fluorine can affect the mRNA and protein expression of osteoblastic IGF-1 and its receptor.It indicates that IGFS signal transduction pathways play an important role in fluorine regulation of bone metabolism.

Objective To determine the expression level of deleted in liver cancer-1 (DLC-1)gene in human pituitary tumors, and assess the correlation between DLC-1 expression and clinicopathological parameters in these tumors. Methods DLC-1 and Ki-67 protein expressions were analyzed by immunohistochemistry and DLC-1 mRNA expression by quantitative RT-PCR in 84 pituitary adcnomas and 6 normal human adenohypophyses. Results Immunohistochemical results suggested that DLC-1 expression decreased and Ki-67 expression increased in the pituitary adenomas; Pearson correlation analysis showed that they were negatively correlated (r=-0.764,P=0.001).RT-PCR indicated that DLC-1 mRNA expression decreased in the pituitary adenomas; significantly decreased DLC-1 expression in invasive pituitary adenomas was noted as compared with that in non-invasive ones (P＜0.05). Conclusion Down-regulation of DLC-1 expression may contribute to the tumorigenesis of pituitary adenomas and DLC-1 can be the new target of molecular therapy.

OBJECTIVETo evaluate pathologically the effect of the single or combined application of UDP-glucose, GDNF and memantine on the improvement of white matter injury in neonatal rats with periventricular leukomalacia (PVL) under light and electron microscopy.

METHODSA five-day-old neonatal rat model for PVL was established by ligation of the lateral common carotid artery following 120-minute hypoxia. Rats were randomly divided into six groups (30 rats in each group): sham-operated, PVL, UDP-glucose (UDP-glucose 2000 mg/kg intraperitoneally after PVL), GDNF (GDNF 100 μg/kg intracerebrally after PVL), tmemantine (memantine 20 mg/kg intraperitoneally after PVL), and a combination administration of three drugs (UDP-glucose, GDNF and memantine). The rats were sacrificed 7 or 21 days after PVL for assessment of pathological changes in the white matter under both light and electron microscopy. The number and thickness of the myelin sheath in the white matter were measured under electron microscopy, and both of pathological grading and scoring were undertaken under light microscopy.

RESULTSThere was rare and sparse myelinogenesis with a loose arrangement of nerve fibers in the white matter under electron microscopy in the PVL group at 7 and 21 days after PVL. The number and thickness of the myelin sheath in the PVL group were significantly less than in the sham-operated, UDP-glucose, GDNF, memantine and combination administration groups (P<0.01). The results of pathological grading of white matter under light microscopy showed that all rats in the PVL group manifested either mild injury (38%-50%) or severe injury (50%-62%) at 7 and 21 days after PVL. The majority of rats (50%-88%) in the four drug administration groups had normal white matter at 7 and 21 days after PVL. The pathological scores at 7 and 21 days after PVL in the PVL group were the highest, and they were significantly higher than in the other five groups (P<0.05).

CONCLUSIONSThe single or combined application of UDP-glucose, GDNF and memantine may significantly improve pathological changes in the white matter of rats with PVL. The favorable effect is inferred to be closely correlated with the improvement of brain microenvironment and the enhancement of nerve regeneration promoted by the three drugs.

Animals ; Brain Ischemia ; drug therapy ; pathology ; Cerebral Ventricles ; pathology ; ultrastructure ; Female ; Glial Cell Line-Derived Neurotrophic Factor ; administration & dosage ; therapeutic use ; Humans ; Infant, Newborn ; Leukomalacia, Periventricular ; drug therapy ; Male ; Memantine ; administration & dosage ; therapeutic use ; Microscopy, Electron ; Rats ; Rats, Sprague-Dawley ; Uridine Diphosphate Glucose ; administration & dosage ; therapeutic use

OBJECTIVETo observe the changes in peripheral blood T lymphocyte rDNA transcription activity and to study the significance of immune monitoring for patients with chronic benzene poisoning.

METHODSVenous blood samples were withdrawn from 39 patients with chronic benzene poisoning, 20 patients with malignant disease and 22 healthy controls. Cell culture, argyrophil staining method, I-CLQ cell image analysis system were used in this study. rDNA transcription activity which was expressed by the ratio of integrated area (IA) of nucleolus to that of nucleus, and the ratio of integrated optical density (IOD) of argyrophilic nucleolus to that of argyrophilic nucleus.

RESULTS(1) The value of IA and IOD in chronic benzene poisoning patients (7.95% +/- 1.13% and 7.15% +/- 1.15% respectively) were lower than those in controls (9.59% +/- 1.26% and 8.92% +/- 1.18% respectively), P < 0.01. The value of IA and IOD in chronic moderate benzene poisoning patients (6.54% +/- 0.88%) and (5.47% +/- 0.80%) were lower than those to be observed (7.98% +/- 1.06% and 7.13% +/- 0.96% respectively) as well as in mild poisoning patients (8.19% +/- 1.06% and 7.44% +/- 1.06% respectively), P < 0.05. (2) The value of IA and IOD in malignant group (4.10% +/- 1.50%, 3.67% +/- 1.42%) were much more lower than those in controls and in chronic benzene poisoning patients (P < 0.01).

CONCLUSIONrDNA transcription activity may be an index to monitor the cellular immune function of chronic benzene poisoning patients.

Adult ; Benzene ; poisoning ; Chronic Disease ; DNA, Ribosomal ; genetics ; Female ; Humans ; Male ; Middle Aged ; T-Lymphocytes ; drug effects ; metabolism ; Transcription, Genetic ; drug effects

Objective To investigate the optimal scanning parameters for diffusion tensor imaging of the cervical cord.Methods MRI and diffusion tensor imaging of the cervical cord was performed in 80 healthy adult volunteers.Different parameters including b values,the number of the diffusion sensitive gradient directions,the number of excitations,and slice thickness were applied and their effects on the quality of the images were compared.DTI was performed on the cervical spinal cord with different b-values (400,700,and 1000 s/mm~2)in group 1,with different numbers of diffusion gradient directions(6,13, and 25)in group 2,with different numbers of excitations(2,4,and 8)in group 3,and with different slice thicknesses(2,3,and 4 mm)in group 4.Two radiology experts gave a score to every image with double blind methods,then compared the image quality.Results In the comparison of the four different parameters,DTIs using a b value of 700 s/mm~2(2.25?0.58)showed better image quality than those with the b values of 400 s/mm~2(1.86?0.53)and 1000 s/mm~2(1.48?0.35)(P