Objective To investigate the safety and feasibility of minimally invasive stealth lateral release operation in the treatment of chronic anal fissure . Methods Clinical data of 42 patients with chronic anal fissure who underwent minimally invasive stealth lateral release from May 2012 to May 2014 was analyzed retrospectively .We use the homemade fine steel wire to pierce into the sphincter ditch with a distance from the anus of 1 cm, and put the steel wire out above the dentate line .Then the wire was took out from the other edge under the skin through the needle of bobbin .After the needle was fixed by an assistant , the free end of the steel wire was pulled quickly to cut the internal sphincter tissue instantly . Results All the 42 patients were successfully treated and discharged without complications .The recovery time was in 7 -14 d, with an average of 9 d.The healing standards included disappeared symptoms and totally healed wound .All the patients were followed up for 3-6 months, with an average of 4 months.No recurrence was found . Conclusion Minimally invasive stealth lateral release in the treatment of chronic anal fissure is safe and feasible, with many advantages such as simple performance , reliable curative effect, fast recovery time, and less postoperative complications .

Single unit activity were recorded from 157 dorsal horn neurons in the spinal rats by stimulation of left surat nerves. Stretching urinary bladder were performed after the neurons were identified by somatic afferents. 32 out of the 157 could also be activated by stretching urinary bladders. These recorded dorsal horn neurons which responded to both somatic and visceral inputs are called somatovisceral convergent neurons (SVCN). The afferent visceral fibers were N group according to conductive velocity in our experiment. It has been shown that C-fiber component in 9 WDR neurons were incresed by stimulating the left sural nerves after stretching urinary bladders. 15 spontaneous- discharge WDR neurons were recorded and 13 out of them were excited, meanwhile, 2 out of them were inhibited after urinary bladders were stretched. The study provides the new data for the convergence from the somatic and visceral afferents in the dorsal horn of spinal cord and supplies the first evidence for central mecha nism of visceral referred pain.

BACKGROUND:Electromagnetic fields can cause changes of the body,especially the nervous system.Effect of pulsed electromagnetic fields(PEMFs)on neural stem cells has been detected.OBJECTIVE:To investigate the effect of prenatal pulsed electromagnetic fields(PPEMFs)on neural stem cell proliferation and nestin protein expression in the hippocampus of rat offspdng.METHODS:Sprague Dawley female rats weighing 240-260 g were included and randomly divided into two groups:control and PPEMFs.Rats from the control group were given no interventions.Rats from the PPEMFs group were given PEMFs stress at gestational days 14-20.Each stress was given three times daily for 10 minutes.The male and female offspring rats were sacrificed at 1 month of age and their brains were sectioned to determine the expression of nestin protein and Brdu-positive cells in the hippocampus by immunohistochemistry.RESULTS:The expression of nestin-and Brdu-positive cells in the hippocampus of female and male PEMFS offspring were significantly higher compared with the control group(P<0.001),and there was a significant difference between female and male offspring(P<0.001).The nestin-and Brdu-positive cells in female offspring outnumbered those in male offspring(P<0.001);however,there was no significant difference between female and male offspring in the control group(P>0.05).CONCLUSION:PPEMFs can increase the number and proliferative capability of the neural stem cells in offspring.It may be a pdmary stage of the cascade reaction of the body to the brain damage caused by PPEMFs stress.

Objective To investigate the distribution of CYP2C19 metabolism phenotype in patients with clopidogrel treatment in Huangshi.Methods The peripheral blood samples were obtained from 76 patients with clopidogrel treatment in Cardiovascular Department.CYP2C19 genotypes were determined by the gene chip,CYP2C19 metabolism phenotype were investigated and com-pared with the data of healthy Han Chinese from the published papers.Results There were three kinds of metabolizers about the metabolism phenotypes of CYP2C19,which were extensive metabolizers,intermediate metabolizers and poor metabolizers.In the 76 patients,the ratios of these metabolism phenotypes were 39.47%,44.74% and 15.79%,respectively.The result coincided with the healthy Han Chinese.Conclusion The clinical individualized medication of healthy Han Chinese could be refered to the clinical indi-vidualized medication of patients with clopidogrel treatment in Huangshi.

AIM: To investigate the effects of prenatal stress (PS) on neurons and neuronal ultrastructure of hippocampus in offspring rats, and to explore the role of the overproduction of oxidants. METHODS: One month male offspring rats were obtained to observe the neuronal number, neuronal ultrastructure and the number of nNOS -positive cell in hippocampus. RESULTS: The neuronal number of CA1 and CA4 subregions in late gestation stress (LS) offspring decreases significantly. The neuronal ultrastructure of CA1 subregion in MS (stress in 7-13 days of gestation) and LS offspring appeared bulgy mitochondria, unclear membrane and irregular electron density. Lipofuscin pigments increased; The number of nNOS-positive cell in CA1, CA2, CA3 subregions and DG of MS group and the whole hippocampus of LS group increased significantly. CONCLUSION: PS damaged the neurons and neuronal ultrastructure of hippocampus of offspring rats. The damages were associated with the overproduction of oxidants.

Objective: To examine the effects of the education with glycemic index(GI)on dietary knowledge,attitude and practice of diabetic patients,and on their blood glucose and lipid.Methods: Seventy-two subjects with type 2 diabetes were randomly assingned into two groups. The test group (group GI) mainly learned the knowledge about GI of food. The controlled group (group FEL) mainly learned the knowledge about food exchange list(FEL). Outcomes were assessed by the change of dietary knowledge, attitude and practice, fasting blood glucose (FBG), 2 h postprandial blood glucose ( 2 hPBG), glycosylated hemoglobin (HbA 1c), and blood lipids which include total cholesterol (TC), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), triglycerides (TG) and lipid comprehensive index (LCI). The period lasted five months. Results: The percent of correct answer for GI questions was increased significantly from 0 % before education to 92.2% after education (P

BACKGROUND: Hippocampus is an important region involved in learning and memory. Some methods for freshly isolated hippocampal pyramidal neurons have been described. These methods need multiple enzymes or the procedure is complex.OBJECTIVE: To acquire large quantities of hippocampal neurons from rats suitable for patch clamp study.DESIGN: An animal experimental observation.SETTING: Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiao Tong University.MATERIALS: The experiments were carried out in the Medical Experimental Center, School of Medicine, Xi'an Jiao Tong University between March and October 2004. The animals were the 10-15-day-old SpragueDawley rats, bothmale and female.METHODS: Hippocampal pyramidal neurons were freshly isolated. Delayed rectifier potassium current and voltage-gated Ca2 + currents were recorded by whole-cell patch clamp configuration.MAIN OUTCOME MEASURES: Acute isolated neurons were observed with a Leica microscope. Recordings of delayed rectifier potassium currents and voltage-gated Ca2+ currents were obtained.RESULTS: ① Under the inverted microscope, the acute isolated neurons had a smooth and glassy surface, a three-dimensional contour, a pyramidal shape with a longer apical dendrite and several basal dendrites. ② After the whole cell recording configuration was formed, voltage-gated barium currents through calcium channels were elicited by 200 ms depolarizing potential from -70 mV to +20 mV, with an increment of 10 mV, a holding potential was -90 mV. Delayed rectifier potassium current (Ikd) was elicited by a protocol consisting of a multiple depolarizing pulses (-60 mV to +50 mV),preceded by a single prepulse step to -50 rmV, with inactivated transient outward potassium currents from a holding potential of -80 mV.CONCLUSION: This method is simple and ideal for the dissociation of neurons from rat hippocampus, and offers a powerful tool for functional analysis of ion channels by patch clamp.

Aim To observe the effects of icariin on depressive-like behavior in prenatally stressed offsprings and explore its mechanism.Methods The model of depression was established by prenatal restraint stress on late pregnant mother, then male offspring rats were randomly divided into five groups of eight: Control, PS model, Saline group(NS), ICA(80 mg·kg-1), ICA(40 mg·kg-1).The effects of icariin on PS-induced depressive-like behaviors in male offsprings were examined by forced swimming test(FST) and open-field test(OFT).Furthermore, the protein expressions of group I metabotropic glutamate receptors(I mGluRs) and excitatory amino acid transporter 2(EAAT2) in prefrontal cortex were detected by Western blot.Results PS group exhibited depressive-like behaviors with decreased struggling time(P<0.01) and center crossing numbers(P<0.05) compared to CON, with increased protein expressions of group I mGluRs(P<0.01,P<0.05) and decreased EAAT2(P<0.05) in prefrontal cortex compared to CON.Treatment with icariin(80 mg·kg-1, 40 mg·kg-1)significantly increased struggling time(P<0.05,P<0.01) and center crossing numbers(P<0.05) in PS-exposed male offspring rats.Treatment with icariin markedly modulated the protein levels of mGluR1, mGluR5 and EAAT2 in prefrontal cortex.Conclusion Icariin has significant antidepressant effects in prenatally stressed rats, and the mechanism might be associated with the modulation of Ⅰ mGluRs.

Objective To test the protective effect of a new Ringer's malate solution on intestine's apoptosis caused by hemorrhagic shock in rats.Methods Forty-eight Sprague-Dawley male rats, weighing 280-320 g, were randomly assigned into four groups: sham shock group (group SS), normal saline group (group NS), Ringer's lactate group (group RL) and Ringer's malate (group RM), n=12 each.The group SS was served as control group, the other groups were subjected to 60 min of hemorrhagic shock followed by crystalloid resuscitation.Those rats were sacrificed 3 h after resuscitation.Intestinal tissue was harvested to detect Bcl-2/Bax protein level, the bioactivity of superoxide dismutase (SOD) and malondialdehyde (MDA) level.The level of intestinal cell apotosis was measured using TUNEL method and apoptosis index was calculated.The intestinal histopathology was examined.Results Compared with group SS, the expression of Bcl-2 and the bioactivity of SOD were lower, the level of Bax protein, MDA and apoptotic index were higher in groups NS, RL and RM (P<0.05).Compared with groups NS and RL, the expression of Bcl-2 and the bioactivity of SOD was higher, the level of Bax protein, MDA and apoptotic index were lower in group RM (P<0.05).Histopathological examination showed that group RM was better than group NS and group RL.Conclusion Ringer's malate alleviated intestinal apoptosis caused by hemorrhagic shock in rats.The study suggests that Ringer's malate solution could be a potential new therapeutic agent for fluid resuscitation.

Objective To analyze the clinical manifestation caused by local injections of botulinum toxin type A for cosmetic reason and the effect of antitoxin for adverse reaction.Methods Diagnosis and treatment process of 40 patients were retrospectively analyzed for adverse reactions due to botulinum toxin injections for beauty.Severe adverse reaction was assessed according to the patients clinical manifestation and the nervous system of physical assessment.The patients were given symptomatic treatment,observation or antitoxin therapy.Results Adverse reactions developed in 40 patients were mainly the nervous system abnormalities.Dyspnea developed in four cases.34 cases (85 ％) were given symptomatic treatment.4 cases (10 ％) were given botox treatment,and the patients were followed up for 1-3 months.The patients fully recovered to normal and did not leave any neurological sequelae.Conclusions The management of type A botulinum toxin injections should be strengthened.In case of poisoning,antitoxin therapy should be given as early as possible.