This review summarizes the present advance of effects of stress on hippocampal structure and function and the role of hippocampus in feedback regulation of thalamic-pituitary-adrenocortical (HPA) axis during stress. It shows that stress can affect hippocampal structure and function, on the other hand, the hippocampus can also suppress the stress reaction through the feedback regulation of HPA axis, but chronic stress can attenuate this regulation, then significantly impair its structure and function.
Animals ; Hippocampus/physiopathology* ; Humans ; Hypothalamo-Hypophyseal System/physiology* ; Pituitary-Adrenal System/physiology* ; Stress, Physiological/physiopathology*

OBJECTIVETo verify the electric synchronism, mechanic synchronism and hemodynamics of selective site pacing.

METHODSPacing in the right ventricular cardiac apex (RVA), the right ventricular His bundle region (His), and the septum of right ventricular high-positioned outflow tract (RVOT), CO and CI were recorded. The electrical synchronism was assessed by observing the width and shape in a 12-lead surface ECG. The mechanical synchronism was estimated by using the VVI (vector velocity imaging) technology of the Acuson Sequia 512.

RESULTSThe results showed that CO and CI were lower while pacing in RVA, but they were not significant different (P>0.05). The QRS width: (124 +/- 5.3) ms while pacing in His, (144 +/- 7.1) ms while pacing in RVOT and (156 +/- 8.6) ms while pacing in RVA. The QRS width while pacing in His and in RVOT were narrower than in RVA and there were significant differences (P<0.01). Vector velocity imaging showed that mechanical synchronism was better while pacing in RVOT than that in RVA.

CONCLUSIONPacing in RVOT seems better than pacing in traditional RVA, and the operation was no more difficult than the traditional operation.

Adult ; Aged ; Bundle of His ; physiopathology ; Cardiac Pacing, Artificial ; methods ; Electrocardiography ; Female ; Heart Ventricles ; physiopathology ; Humans ; Male ; Middle Aged ; Pacemaker, Artificial

OBJECTIVETo explore the optimal methods for the reconstruction and preservation of the glans after partial penis resection in the treatment of early-stage penile cancer.

METHODSBetween January 2012 and June 2015, we treated 6 cases of early- stage penile cancer by partial penis resection, inner thigh skin graft, and glans reconstruction and followed them up for 0.5-3 years.

RESULTSThe length of the penis before and after operation was ([6.5 ± 1.2] vs [4.5 ± 1.8] cm) in the flaccid state and ([12.8 ± 2.3] vs [9.1 ± 2.1] cm) in the erectile state. The sense of the reconstructed glans was completely recovered at 3 months after surgery. The glans skin was pale red and soft, nearly normal at 12 months, with no obvious graft contracture or scar formation. All the patients achieved normal erection and their partners were satisfied with their intercourse. No recurrence or metastasis was observed.

CONCLUSIONThe strategy of partial penis resection, inner thigh skin graft and glans reconstruction, simple, effective, and with few complications, is one of the best treatments of early-stage penile cancer, which not only ensures radical removal of the tumor but also maximally reserves the function of the organ.

Humans ; Male ; Penile Neoplasms ; surgery ; Penis ; surgery ; Reconstructive Surgical Procedures ; Skin Transplantation ; Thigh

Objective To evaluate the diagnostic value of brain SPECT imaging with a novel Aβ plaque probe,131 I-2-(4'-dimethylaminophenyl) -6-iodoimidazo[ 1,2-α ] pyridine ( 131 I-IMPY) in early AD.Methods Thirteen patients with AD (3 males,10 females,age ranged 52 - 79 y),11 with mild cognitive impairment (MCI,4 males,7 females,age ranged 48 - 67 y) and 14 normal controls (6 males,8 females,age ranged 42 - 67 y) were enrolled in this study.131I-IMPY SPECT imaging was acquired in 2 -3 h after the agent injection.ROIs were drawn on cerebral lobes and cerebellum.The ratios of mean radioactivity of cerebral lobes over cerebellum (Rcl/cb) were calculated.The t-test was used for data analysis.Results In patients with MCI,Rcl/cb ratios were increased in parietal gyrus,temporal gyrus and frontal gyrus (right:1.15±0.18,1.18±0.12,1.14±0.14; left:1.16±0.11,1.19±0.18,1.15±0.09)compared with those in normal control group ( right:1.02 ± 0.12,1.05 ± 0.14,1.01 ± 0.12 ; left:1.03 ±0.13,1.05 ±0.13,1.01 ±0.14; t:2.1642 to 2.8757,all P ＜0.05).Rcl/cb ratios of basel ganglia and occipital gyms in MCI group (right:0.92 ±0.18,1.12 ±0.15; left:0.94 ±0.15,1.13 ±0.17) showed no statistical difference compared with those in normal control group (right:0.82 ±0.15,1.06 ±0.18;left:0.85 ±0.16,1.08 ±0.15; t:0.7805 to 1.4344,all P＞0.05).In patients with AD,Rcl/cb ratios were increased in parietal,temporal,basal ganglia and occipital lobes (right:1.16 ±0.19,1.24 ±0.17,1.16 ±0.13,1.14±0.11,1.23±0.10; left:1.17±0.21,1.25±0.15,1.18±0.08,1.17±0.16,1.25±0.11)compared with those in normal control group( t:2.1001 to 6.2789,all P ＜0.05).Rcl/cb ratios of parietal,temporal and frontal lobes in AD group showed no statistical difference compared with those in MCI group (t:0.1316 to 0.9806,all P ＞ 0.05 ),while Rcl/cb ratios of basal ganglia and occipital lobes in AD group were increased compared with those in MCI group ( t:2.0850 to 3.6772,all P ＜ 0.05 ).Conclusion 131 I-IMPY as a β- amyloid plaque probe for brain SPECT imaging may be potentially helpful for early diagnosis of AD.

Objective To evaluate the imaging methods,characteristics,diagnostic value of multi- slice CT urography(MSCTU)in congenital abnormities of urinary system.Methods To collect 33 urinary congenital abnormities cases in three years and to analyses these MSCTU images.All examinations were performed with a multi-slice spiral CT scanner.The patients were intravenously injected with 90 ml of Iohexol 300 with a power injector at the rate of 3 ml/s.Nephrographic-phase images were obtained at 75 s after initiation of the injection of contrast material,the appropriate delay time is according to Kidney's enhancement extent and nephrohydrosis degree.Excretory-phase images were obtained through the abdomen and pelvis from 10 min.to 23 h after initiation of the injection of contrast material without abdominal compression.Excretory-phase images were transferred to the workstation and performed maximun intensity projection(MIP),multiplanar reconstruction(MPR),volume rendering(VR),and virtual cystoscopy (VC).Results The urinary congenital abnormities diagnosed by MSCTU in 33 cases,including 1 ectopic kidney,1 horseshoe kidney,1 renal malrotaion,2 supernumerary kidneys,2 ureteral valves,2 retrocaval ureters,4 congenital megaureters,6 ureteropelvic junction stenosis,9 pelviureteric duplication malformations and 5 bladder diverticula.The displaying rate of ureter was 91%(61/66).The scanning time of excretory-phase was less than 20 seconds in All cases.The average CT value of contrast media in displayed ureter lumens was 520 HU.The postprocessing images had clear,dimensional feature and It was satisfy the diagnosis.Conclusion MSCTU has clear,dimensional feature and has strong ability of displaying total anatomy shape and tiny pathology change of congenital abnormities in the urinary system.It is a very useful method for detecting the congenital abnormities in the urinary system.

OBJECTIVESTo evaluate the relationship between the operative methods and the therapeutic results of the patients with hypospadias.

METHODSNine operative types and different tissue materials taken in hypospadias operations in the past 12 years were retrospectively analyzed.

RESULTSThe operative types and tissue materials had significantly effects on the therapeutic results besides the clinical experience of the operators. The cure rates of Tunneltron Urethroplasty, Preputial island flap urethroplasty and Bladder mucosa graft urethroplasty were 86.4%, 83.3% and 83.0% respectively.

CONCLUSIONSAll the nine types and different tissue materials of Hypospadias operations have its own advantages and disadvantages. They are worth further study and improvement.

Adolescent ; Adult ; Child ; Child, Preschool ; Humans ; Hypospadias ; surgery ; Infant ; Male ; Mucous Membrane ; transplantation ; Penis ; surgery ; Surgical Flaps ; Treatment Outcome ; Urethral Stricture ; surgery ; Urinary Bladder ; transplantation ; Urinary Fistula ; surgery ; Urologic Surgical Procedures, Male ; methods

The risk factors and precautions of inpatient suicide were explored. Thirty suicide victims were drawn from the adverse event reports of suicidal act during hospitalization in a general hospital from 2008 to 2014. Data were gathered from the focus group interviews of twelve nurses who had experienced inpatient suicide. The data were analyzed by using analytical technique based on grounded theory, and software QSR NVIVO8 was used to aid the collation of data. Three main themes of risk factors about inpatient suicide emerged from the analysis: individual value, social factors and environmental factors. The individual value was categorized into different groups such as sense of guilt, hopelessness and low self-esteem. Social factors included two aspects of negative life events and social support. Three themes of precautions about inpatient suicide appeared in this study: evaluation, nursing and information exchange. Evaluation was elaborated from both physical and psychological assessments. This finding extends existing work of risk factors and precautions about inpatient suicide and brings new knowledge about the reasons why inpatients commit suicide.
Adult ; China ; Female ; Humans ; Inpatients ; Male ; Middle Aged ; Nursing Staff, Hospital ; psychology ; Qualitative Research ; Risk Factors ; Suicide

Kv4.3 channel is present in many mammalian tissues, predominantly in the heart and central nervous system. Its currents are transient, characterized by rapid activation and inactivation. In the hearts of most mammals, it is responsible for repolarization of the action potential of ventricular myocytes and is important in the regulation of the heart rate. Because of its central role in this important physiological process, Kv4.3 channel is a promising target for anti-arrhythmic drug development. Jingzhaotoxin-V (JZTX-V) is a novel peptide neurotoxin isolated from the venom of the spider Chilobrachys jingzhao. Whole-cell patch clamp recording showed that it partly blocked the transient outward potassium channels in dorsal root ganglion neurons of adult rats with an IC(50) value of 52.3 nmol/L. To investigate the effect of JZTX-V on Kv4.3 channel, JZTX-V was synthesized using the solid-phase chemical synthesis and separated by reverse phase high performance liquid chromatography (HPLC). The purity was tested by matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MOLDI-TOF mass spectrometry). Two-electrode voltage-clamp technique was used to characterize the action of JZTX-V on Kv4.3 channels expressed in Xenopus laevis oocytes. As a result, JZTX-V displayed fast kinetics of inhibition and recovery from inactivation. Furthermore, it could inhibit Kv4.3 channel current in a time- and concentration-dependent manner with an IC(50) value of 425.1 nmol/L. The application of JZTX-V affected the activation and inactivation characteristics of Kv4.3 channel and caused a shift of the current-voltage relationship curve and the steady-state inactivation curve to depolarizing direction by approximately 29 mV and 10 mV, respectively. So we deduced that JZTX-V is a gating modifier toxin of Kv4.3 channel. Present findings should be helpful to develop JZTX-V into a molecular probe and drug candidate targeting to Kv4.3 channel in the myocardium.
Animals ; Ganglia, Spinal ; cytology ; Neurons ; drug effects ; Neurotoxins ; pharmacology ; Oocytes ; Patch-Clamp Techniques ; Peptides ; pharmacology ; Potassium Channel Blockers ; pharmacology ; Rats ; Shal Potassium Channels ; metabolism ; Spider Venoms ; pharmacology ; Xenopus laevis

Objective To understand the forming cause of the Oncomelania hupensis snail-existent non-endemic areas of schistosomiasis(SENEAS),and to verify the conclusion of previous studies,so as to provide the evidence for schistosomiasis monitoring in such areas in Nantong City,Jiangsu Province. Methods The controlled field tests were carried out to observe the O. hupensis snails artificially infected by schistosome miracidia in SENEAS. The influence of the soil from SENEAS and the en-demic areas on O. hupensis snails artificially infected by miracidia were observed. Results All the experimental snails could be infected by schistosome miracidia except the smooth-shell snails from Tangyuan Village in the controlled field test environment of SENEAS or the endemic areas. The infection rates of the smooth-shell snails were lower than those of the ribbed-shell snails , but there were no statistically significant differences. The mortality rates of the smooth-shell snails were higher than those of the ribbed-shell snails,which were statistically significant (χ2Xindian = 135.118,χ2Shuangdian = 122.836,χ2Baipu =154.436,χ2Dingyan =138.288,χ2Control=151.923,all P<0.01). There were no significant differences in the infection rates of snails between each test group of the soil from SENEAS and the endemic areas(χ2Rugao=0.071,χ2Rudong=0.216,both P>0.05). Also there was no signifi-cant difference between each test group and the control group without soil(χ2=7.148,P>0.05). Conclusion It is likely to form the spread of schistosomiasis in SENEAS in Nantong City with sufficient amount of infection source of schistosomiasis im-ported. It is still necessary to implement the surveillance of schistosomiasis and O. hupensis snails in Nantong City.

OBJECTIVETo evaluate the efficacy and safety of oxymatrine in the treatment of chronic hepatitis B.

METHODSA multicenter randomized double-blind placebo-controlled trial was conducted. A total of 144 patients with chronic hepatitis B entered the study for 52 weeks; of them 72 received oxymatrine, and 72 received a placebo. Before and after the treatment, clinical symptoms, liver function, serum hepatitis B virus markers, and adverse drug reactions were observed.

RESULTSIn 144 patients, 14 were dropped and excluded due to inconsistencies in the included standard. Therefore, the efficacy and safety of 130 patients were analyzed. After being treated for 52 weeks, 70.77% of the patients in the study group had a normal ALT level, and in 43.08% and 33.33% their HBV DNA and HBeAg became negative. In the placebo group, 39.68% had normal ALT level, and 12.31% and 3.33% had their HBV DNA and HBeAg become negative. The rates of complete response and partial response in the oxymatrine group were 23.08% and 58.46%, and in the placebo group they were 3.08% and 44.62%. They were significantly higher in the oxymatrine group than in the placebo group. In the oxymatrine treated patients, 12 weeks after its withdrawal, 60.00% had a normal ALT level, 41.54% and 23.33% had both HBV DNA and HBeAg negative. In the placebo group, 31.75% had a normal ALT level, 3.08% and 1.67% had both HBV DNA and HBeAg negative. The rates of complete response and partial response in the oxymatrine group were 21.54% and 47.69%, and in the placebo group they were 0 and 41.54%. They were significantly higher in the study group than in the placebo group. The adverse reaction rates of oxymatrine in the study and the placebo group were 7.69% and 6.15%, respectively, but there was no statistical significant difference between them.

CONCLUSIONOxymatrine is an effective and safe agent for the treatment of chronic hepatitis B.

Adolescent ; Adult ; Aged ; Alkaloids ; adverse effects ; therapeutic use ; Antiviral Agents ; adverse effects ; therapeutic use ; Double-Blind Method ; Female ; Hepatitis B, Chronic ; drug therapy ; Humans ; Male ; Middle Aged ; Quinolizines