Exploring the Pathogenesis of T2DM based on the Correlation between “Qi-fire Imbalance” and Ferroptosis / 中医杂志

@#Ferroptosis is a novel iron-dependent mode of programmed cell death characterized by iron deposition and accumulation of lipid peroxidation. More and more studies have found that ferroptosis is closely related to the pathogenesis of type 2 diabetes mellitus （T2DM）. The yin-fire theory is an important part of LI Gao's spleen-stomach theory， and it is believed that qi-fire imblance and yin-fire internal generation is the main pathogenesis of T2DM. Abnormal iron metabolism may be an important prerequisite for T2DM yin-fire internal generation， while oxidative stress is the specific manifestation of T2DM qi-fire imbalance. Reactive oxygen species （ROS） is the end product of qi-fire imbalance， and lipid peroxide is the pathological products of T2DM yin-fire internal generation. This study intends to explore the pathological mechanism of qi-fire imbalance and yin-fire internal generation from the perspectives of iron metabolism， oxidative stress and lipid peroxidation， enriching the modern connotation of yin-fire theory， and benefiting traditional Chinese medicine to target against ferroptosis， and prevent and treat T2DM precisely.

Exploring the Pathogenesis of T2DM based on the Correlation between “Qi-fire Imbalance” and Ferroptosis / 中医杂志

Ferroptosis is a novel iron-dependent mode of programmed cell death characterized by iron deposition and accumulation of lipid peroxidation. More and more studies have found that ferroptosis is closely related to the pathogenesis of type 2 diabetes mellitus （T2DM）. The yin-fire theory is an important part of LI Gao's spleen-stomach theory， and it is believed that qi-fire imblance and yin-fire internal generation is the main pathogenesis of T2DM. Abnormal iron metabolism may be an important prerequisite for T2DM yin-fire internal generation， while oxidative stress is the specific manifestation of T2DM qi-fire imbalance. Reactive oxygen species （ROS） is the end product of qi-fire imbalance， and lipid peroxide is the pathological products of T2DM yin-fire internal generation. This study intends to explore the pathological mechanism of qi-fire imbalance and yin-fire internal generation from the perspectives of iron metabolism， oxidative stress and lipid peroxidation， enriching the modern connotation of yin-fire theory， and benefiting traditional Chinese medicine to target against ferroptosis， and prevent and treat T2DM precisely.

Clinical application of percutaneous pedicle screw placement guided by ultrasound volume navigation combined with X-ray fluoroscopy: a prospective randomized controlled study / 中国修复重建外科杂志

OBJECTIVE@#To explore the feasibility and accuracy of ultrasound volume navigation (UVN) combined with X-ray fluoroscopy-guided percutaneous pedicle screw implantation through a prospective randomized controlled study.@*METHODS@#Patients with thoracic and lumbar vertebral fractures scheduled for percutaneous pedicle screw fixation between January 2022 and January 2023 were enrolled. Among them, 60 patients met the selection criteria and were included in the study. There were 28 males and 32 females, with an average age of 49.5 years (range, 29-60 years). The cause of injury included 20 cases of traffic accidents, 21 cases of falls, 17 cases of slips, and 2 cases of heavy object impact. The interval from injury to hospital admission ranged from 1 to 5 days (mean, 1.57 days). The fracture located at T 12 in 15 cases, L 1 in 20 cases, L 2 in 19 cases, and L 3 in 6 cases. The study used each patient as their own control, randomly guiding pedicle screw implantation using UVN combined with X-ray fluoroscopy on one side of the vertebral body and the adjacent segment (trial group), while the other side was implanted under X-ray fluoroscopy (control group). A total of 4 screws and 2 rods were implanted in each patient. The implantation time and fluoroscopy frequency during implantation of each screw, angle deviation and distance deviation between actual and preoperative planned trajectory by imaging examination, and the occurrence of zygapophysial joint invasion were recorded.@*RESULTS@#In terms of screw implantation time, fluoroscopy frequency, angle deviation, distance deviation, and incidence of zygapophysial joint invasion, the trial group showed superior results compared to the control group, and the differences were significant ( P<0.05).@*CONCLUSION@#UVN combined with X-ray fluoroscopy-guided percutaneous pedicle screw implantation can yreduce screw implantation time, adjust dynamically, reduce operational difficulty, and reduce radiation damage.

Isorhamnetin protects endothelial cells model CRL1730 from oxidative injury by hydrogen peroxide.

To explore the protective effect and mechanism of isorhamnetin against oxidative injury caused by H2O2 to endothelial cell strain CRL1730 of human umbilical vein. H2O2 and endothelial cell strain CRL1730 were used, as a model of injured endothelial cell. Three levels of crude drugs areorhamnetin, 22.8µg/ml, 11.4µg/mL and 5.7µg/mL was added to the injured cell strain CRL1730 respectively. The cell injury was measured in terms of necrotic rate, quantities of von Wilebr and factor (vWf) and thrombomodulin (TM), lactate dehydrogenase (LDH) and intracellular free calcium ions through flow cytometry, ELISA, fluorescent spectrometer and laser scanning confocal microscopy respectively. Isorhamnetins @ 11.4µg/mL and 5.7µg/mL has significantly decreased EC necrotic rate, while the increased vWf concentration due to oxidant (200mol/L of H2O2) was significantly decreased by 5.7µg/mL versus 11.4 and 22.8µg/mL isorhamnetin. Also, the increased in TM and LDH in injured cells was reversed to normal level with 5.7 to 11.4µg/mL isorhamnetin. These results suggest that isorhamnetin protect the integrity of cell membranes. Similarly, H2O2 treatment of cells elicited the release of intracellular calcium, however, 5.7µg/mL and 11.4µ g/mL isorhamnetin dramatically inhibited transient release of intracellular calcium. This suggests that isorhamnetin, at lower concentration, could inhibit the IP3-sensitive calcium pool from releasing calcium, protecting VECs from injury by H2O2. Traditional Chinese herbs, hippophaerhamnoides have been recognized as safe and as a source of flavonoids, with strong cardiovascular protection. The results of this study revealed that isorhamnetin produce a strong effect on some targetspresent in ECs and thus, provide a basis for the future work targeted towards endothelial cells protection.

Effect of sequential therapy of linezolid and teicoplanin for the treatment of the severe pneumonia induced by gram-positive coccus / 中国基层医药

Objective To investigate the effect of sequential therapy of linezolid and teicoplanin for the treatment of the severe pneumonia induced by gram-positive coccus.Methods From September 2014 to August 2017,0 cases of severe pneumonia patients in the Traditional Chinese Medicine Hospital of Zhoushan were gram positive coccus,tumbled to rina amine for patients treated with intravenous drip,the course of treatment was 7 days,and then intravenous drip their stead better treatment,treatment for 7 days,the clinical situation of patients before and after treatment respectively,the characteristics of signs and adverse reactions were analyzed.Results Among the 51 cases (63.75％),19 cases (23.75％),8 cases (10.00％),and 2 cases (2.5％),the total effective rate was 87.5 ％.In the distribution and clearance rate of pathogenic bacteria,the bacterial clearance rate of liniazolamide and the replacement of gram-positive coccus pneumoniae was 87.50％.There was no other adverse reaction.Conclusion Sequential therapy of linezolid and teicoplanin for the treatment of the severe pneumonia induced by gram-positive coccus has several good effects,high clearance rate of pathogenic bacteria,good security.

Effect of preoperative respiratory exercise on pulmonary function and complications in elderly patients after abdominal operation / 中国基层医药

Objective To compare and analyze the effects of preoperative respiratory function exercise on postoperative pulmonary function and complications in elderly patients who undergoing abdominal surgery . Methods A total of 92 elderly patients who underwent abdominal surgery were recruited .They were randomly divided into observation group(46 cases) and control group(46 cases) according to the random number table method . The control group was treated with routine preoperative care methods , the observation group was given preoperative respiratory exercise on the basis of the control group .The pulmonary function tests were performed pre and post surgery.Then,the postoperative pulmonary complications ,VC,FEV1,FVC,MVV and the average length of hospital stay of the two groups were recorded and compared .Results After operation,the levels of VC,FEV1,FVC and MVV in the control group were (2.48 ±0.71)L,(51.40 ±10.10)L,(1.79 ±0.17)L,(62.40 ±13.00)L/min,respectively, which in the observation group were (2.89 ±0.72) L,(63.20 ±9.60) L,(2.21 ±0.16) L and(73.30 ± 12.70)L/min,respectively,the differences between the two groups were significant (t =2.750,5.743,12.202, 4.068,all P<0.05).The average hospitalization time in the observation group was (11.62 ±1.41) d,which was significantly shorter than (15.56 ±6.23) d in the control group (t =4.163,P <0.001).The incidence rate of pulmonary infection in the control group was 26.09％,which was significantly higher than 8.69％ in the observation group(χ2 =4.842,P<0.05).Conclusion The respiratory function training can effectively reduce the incidence of postoperative pulmonary complications in elderly patients with abdominal surgery ,improve the patients ' postoperative pulmonary function, and shorten the patients ' hospital recovery time .Respiratory function exercise is a simple method,and is worthy of promotion in related fields .

Clinical observation of anterior cervical decompression and titanium mesh with locking plate fixation for treatment of cervical spondylosis / 中国基层医药

Objective To investigate the clinical effect of anterior cervical decompression and titanium mesh with locking plate fixation in the treatment of cervical spondylosis.Methods From January 2015 to January 2016,58 patients with cervical spondylosis in Zhoushan Hospital of Traditional Chinese Medicine were selected and randomly divided into two groups,with 29 cases in each group.The control group received the anterior cervical decompression and autogenous iliac bone graft with locking plate fixation.The observation group received anterior cervical decompression and titanium mesh with locking plate fixation.The operation time,bleeding volume and postoperative complications were recorded in the two groups.The patients were followed up for 1 year after operation,the recovery of neurological function was evaluated by,JOA standard,and the bone graft fusion rate was compared between the two groups.Results The operation time,blood loss of the observation group were (80.12 ±5.13)min,(61.45 ± 3.75) mL,respectively,which were significantly less than those of the control group,the differences were statistically significant (t =2.956,2.254,all P ＜ 0.05).The incidence rate of postoperative complications in the observation group was 6.90％,which was significantly lower than 24.14％ in the control group,the difference was statistically significant(x2 =8.540,P ＜ 0.05).The postoperative JOA score of the observation group was (88.95 ± 10.41)points,which was significantly higher than (82.11 ± 7.03)points of the control group,the difference was statistically significant (t =2.192,P ＜0.05).After 1 year follow-up,the fusion rate of the observation group was 96.55％ (28/29),which of the control group was 93.10％ (27/29),the difference was not statistically significant (x2 =2.862,P =0.090).Conclusion Anterior cervical decompression and titanium mesh with locking plate fixation in the treatment of cervical spine injury has good curative effect,and has the advantages of small trauna and high bone fusion rate.

The role of D-dimer in detection and diagnosis of mycoplasma pneumonia / 中国基层医药

Objective To investigate the role of D-dimer in the diagnosis and evaluation of mycoplasma pneumonia.Methods The positive rate and concentration of D-dimer in mycoplasma pneumonia,bacterial pneumonia,viral pneumonia and healthy controls were detected and compared.The positive rate and concentration of D-dimer in patients with systemic inflammatory response syndrome(SIRS)and without SIRS were observed.Changes of D-dimer concentration in patients with mycoplasma pneumonia before and 2 weeks after treatment were observed.Results Compared with bacterial pneumonia group(16.7%),the viral pneumonia group(20.0%)and healthy control group(0.0%),the positive rate of D-dimer in mycoplasma pneumonia group(41.6%)was significantly higher(x2=5.625,4.158,17.308,all P<0.05).The positive rate of mycoplasma pneumonia group with SIRS(64.0%)was significantly higher than that in other groups(x2=17.308,P<0.05).The D-dimer levels of the mycoplasma pneumonia group [(324.4±125.3)μg/L],bacterial pneumonia group[(282.3±95.4)μg/L] and viral pneumonia group[(293.1±92.3)μg/L]were significantly higher than that in the healthy controls[(72.9±22.4)μg/L](t=10.878,11.704,12.698,all P<0.05).The concentration of D-dimer[(381.4±129.4)μg/L] in the mycoplasma pneumonia group with SIRS was significantly higher than that in the other groups(t=2.668,P<0.05).Compared with before treatment,the concentration of D-dimer after treatment in the two groups was significantly lower[(129.3±65.3)μg/L,(89.7±28.6)μg/L](t=2.582,P<0.05).Conclusion The level of D-dimer in children with mycoplasma pneumonia was significantly increased,and the severity of the disease could be reflected.

Observation of curative effect of budesonide combined with terbutaline aerosol inhalation in the treatment of acute asthma / 中国基层医药

Objective To investigate the efficacy of budesonide combined with terbutaline atomization inhalation in the treatment of acute asthma attacks, and to provide reference for clinical treatment.Methods 118 patients with acute asthma attack were selected and randomly divided into observation group and control group, 59 cases in each group.The control group was treated with budesonide inhalation, the observation group was treated with budesonide combined with terbutaline aerosol inhalation The clinical efficacy of the two groups, clinical symptoms and signs of the disappearance time were compared, the pulmonary function test results and the occurrence of adverse reactions were compared.Results In the observation group,the total effective rate was 72.88%, which was significantly higher than 52.54% of the control group (x2=5.218,P<0.05).The disappear time of shortness breath, cough, pulmonary rales in the observation group were (4.01±1.42)d, (6.58±1.51)d, (7.02±227)d, which were significantly shorter than (5.71±1.59)d,(8.52±1.97)d,(8.69±2.61)d in the control group (t=4.557,4.421,4.659,all P<0.05).After treatment, the FEV1,FVC and peak expiratory flow (PEF) of the observation group were (2.35±0.67)L, (2.76±0.62)L, (2.91±0.49)L, which were significantly higher than(2.09±0.57)L,(2.31±0.51)L,(2.48±0.59)L of the control group (t=3.625,3.641,3.887,all P<0.05).The two groups had no serious adverse reactions.Conclusion Budesonide combined with terbutaline atomization inhalation can relieve the clinical symptoms of patients with acute asthma,improve lung function,improve the clinical treatment effect and has good security.

Application of zoledronic acid combined with psychological intervention in the treatment of osteoporotic vertebral compression fractures after PKP / 中国生化药物杂志

Objective To study the value of zoledronic acid combined with psychological intervention in osteoporotic vertebral compression fractures in percutaneous balloon kyphoplasty (PKP). Methods 72 patients with osteoporotic vertebral fractures underwent PKP operation from August 2013 to August 2015 were randomly divided into observation group and control group,with 36 cases,in each group. The patients in the control group were given salmon calcitonin after operation. The patients in the observation group were given zoledronic acid after operation. Both patients were given psychological care. The total effective rate of clinical treatment and the incidence of secondary osteoporotic vertebral compression fractures,Visual analogue pain scale before and after treatment (VAS), Oswestry dysfunction index questionnaire (ODI) score, bone mineral density T value changes were compared between the two groups. Results The total effective rate was 94.44% in the observation group and 77.78% in the control group (P<0.05). The recurrence fracture rate was significantly lower than that of the control group (P<0.05). After treatment, the scores of VAS and ODI in the observation group were significantly lower than those in the control group (P<0.05). The T value of bone mineral density was significantly higher than that of the control group (P<0.05). Conclusion Zoledronic acid combined with psychological intervention can effectively improve the effective rate of PKP after osteoporotic vertebral compression fractures, increase bone density and reduce the incidence of fracture, which is worthy of clinical application.

CHIP involves in non-small cell lung cancer prognosis through VEGF pathway.

AIM: CHIP (c-terminal Hsp70-interacting protein) is an E3 ligase playing vital roles in various cancers. The VEGF pathway has become an important therapeutic target in non-small cell lung cancer (NSCLC). However, little is known about the role of CHIP and the relationship between CHIP and VEGF-VEGFR2 (VEGF receptor 2) pathway in NSCLC. In this study we aimed to investigate the clinical function of CHIP in NSCLC and explore the relevant regulatory mechanism. METHODS: QRT-PCR was performed to detect CHIP expression in NSCLC tissues. The association of CHIP expression and clinical parameters was analyzed using the Chi-square test. Kaplan- Meier and Cox analyses were performed to identify the role of CHIP in the prognosis of NSCLC patients. ELISA test was used to detect the VEGF secretion of NSCLC cells and western blot were used to detected the protein expression of VEGFR2 in NSCLC cells. RESULTS: and the results revealed that CHIP expression was decreased in NSCLC tissues and significantly correlated with clinical stages, lymph node metastasis and distant metastasis (P<0.05). Moreover, Kaplan-Meier and Cox regression analyses showed that patients with negative expression of CHIP had a shorter survival time and CHIP could be an independent prognostic biomarker. In addition, ELISA tests showed that CHIP negatively regulated the secretion level of VEGF. Furthermore, western blot assay indicated that the VEGFR2 protein level was reduced after CHIP over-expression. CONCLUSIONS: Taken together, our findings demonstrate for the first time that CHIP may serve as a promising prognostic biomarker for NSCLC patients and it may be involved in NSCLC angiogenesis through regulating VEGF secretion and expression of VEGFR2.

Effect of nutrition support team on clinical outcomes in surgically treated children with congenital heart disease / 中华临床营养杂志

Objective To investigate the effect of nutrition support team (NST) on the clinical outcomes in surgically treated children with congenital heart disease (CHD).Methods Totally 60 surgically treated CHD children from January 2010 to June 2010.In March 2010,they were divided into two groups based on the interventions:before the intervention (BET group) and after the intervention (AET group).Nutritional risk screening rate,enteral nutrition (EN) application rate,all-in-one parenteral nutrition (PN) application rate,postoperative mechanical ventilation time,length of ICU stay,average hospitalization days,expenses directly related to nutrition,and hospitalization expenses were compared between these two groups.Results The nutritional risk screening rate,EN application rate,and all-in-one PN application rates before and after intervention of NST were 13.3％ (4/30) vs 100％ (30/30),43.3％ (4/30) vs 63.3％ (19/30),and 35.3％ (6/17) vs 100％ (11/11),respectively,in AET group and BET group (x2 =132.11,19.65,and 24.73,respectively,all P ＜ 0.05).Mechanical ventilation time [(7.03 ± 1.76) h vs (8.09 ±2.56) h],length of ICU stay [(24.81 ±2.52) h vs (37.01 ±3.47) h],average hospitalization days [(17.96 ±4.03) d vs (19.60 ±4.53) d],nutritionrelated expenses [(4 132.27 ±416.27) yuan vs (2 754.03 ±323.47) yuan],and hospitalization expenses [(25 725.11 ±515.68) yuan vs (31 975.53 ±600.56) yuan] were also significantly favorable in AET group (t =5.76,3.04,2.05,32.07,and 43.30,respectively; all P ＜ 0.05).Conclusion NSP is an effective approach to promoting the standard efficacious nutrition support therapy in clinical settings and can improve the therapeutic effectiveness and clinical outcomes in surgically treated CHD children.

The expression of Twist protein in adenocarcinoma of prostate and its relationship with prognosis / 中国医师杂志

ObjectiveTo investigate the expression of Twist protein in adenocarcinoma of prostate and clinicopathological features and explore its roles in the carcinogenesis and progression of adenocarcinoma of prostate and its relationship with prognosis.MethodsThe expression of Twist was detected in 70 cases with adenocarcinoma of prostate and 30 cases with side cancer tissue by immunohistochemistry (EnlivionTM).ResultsThe expression of Twist protein in adenocarcinoma of prostate was higher than side cancer tissue.The expression of twist was related to Gleason grade,clinical stage and bony metastasis (P＜0.05),but it was not related to the age (P＞0.05).The survival rate of Twist protein positive patients was significant lower than negative patients(x2=9.52,P＜0.01).ConclusionsTwist might be an important biological marker for malignant transformation and invasion and metastasis adenocarcinoma of prostate,and the up-regulation of the expression of Twist reflects more invasion and poor prognosis.

Impact of anthracene addition on microbial community structure in soil microcosms from contaminated and uncontaminated sites / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>This paper aims to investigate the impact of anthracene addition on microbial community in agricultural soil irrigated with tap water or reclaimed wastewater.</p><p><b>METHODS</b>The changes of microbial community were characterized by terminal restriction fragment length polymorphism in combination with 16S rRNA gene clone library analysis.</p><p><b>RESULTS</b>A significant change in microbial community composition was observed during the biodegradation of anthracene, with dominantly enriched members from the genus Methylophilus.</p><p><b>CONCLUSION</b>This work might be useful for developing techniques for the isolation of novel putative PAH degrader.</p>

Effects of Electrical Stimulation of Vagus Nerve on Plasma Tumor Necrosis Factor α, Nitric Oxide Synthases and Nitric Oxide in Septic Shock Rats / 中国康复理论与实践

@#Objective To study the effect of electrical stimulation of vagus nerve on inflammatory response in septic shock rats. Methods SD rats were randomly divided into 5 groups: Group Ⅰ was the sham group, group Ⅱ with the cecal ligation and puncture (CLP) and the vagus nerve were isolated but not transected, group Ⅲ with bilateral cervical vagotomy following CLP, group Ⅳ with bilateral cervical vagotomy after CLP and the left vagus nerve trunks were stimulated with bipolar electrodes, group Ⅴ with bilateral cervical vagotomy after CLP and the right vagus nerve trunks were stimulated. The common carotid artery pressure was monitored, and the plasma tumor necrosis factor α (TNF-α), nitric oxide synthases (NOS) and nitric oxide (NO) were measured 2 h after stimulation. Results The mean arterial blood pressure (MAP) gradually decreased and the concentration of plasma TNF-α, NOS and NO significantly increased after CLP. Electrical stimulation of the left and right vagus nerve significantly increased the MAP and decreased the plasma TNF-α, NOS and NO levels. Conclusion Direct electrical stimulation of the left and right vagus nerve can significantly improve the blood pressure and reduced plasma TNF-α, NOS and NO levels during septic shock, which may play a role in anti-shock in rats.

The relationship between the coping style and serf-concept of college engineering students / 中华行为医学与脑科学杂志

Objective To study the relationship between the coping style and self-concept of college engi-neering students.Methods 559 engineering students were assessed with the Coping Style Questionnaire and the Tennessee Serf-Concept Scale.Results (1) The positive factors of self-concept had significantly negative correla-tion to the coping styles of serf-blame,illusion,avoidance,and rationalization(-0.445～-0.136,P<0.01),but had significantly positive correlation to the coping style of solving problem and seeking help(0.119～0.432,P<0.01).Serf-criticism had significantly negative correlation to the coping styles of serf-blame,illusion,avoidance,and rationalization(0.134～0.215,P<0.01);(2)There were significant differences between high self-concept students and low self-concept students for coping styles(P<0.01) ;(3) The factors of serf-concept had significant predictability on coping styles.Conclusion There was a higher correlation between the coping style and serf-con-cept of college engineering students.

Effect of PDCA Cycle on Infection Control in Male Psychiatric Closed Wards / 中华医院感染学杂志

OBJECTIVE To investigate whether PDCA(plan-Do-check-action) cycle could lower the incidence of the nosocomial infection in the male psychiatric closed wards.METHODS Data were collected both prospectively and retrospectively.PDCA cycle was used to manage infection control in the male psychiatric closed wards in 2006;whereas the usual method used in the infection control in 2005 was treated as a control group.RESULTS The incidence of the nosocomial infection lowered from 9.94% in 2005 to 5.57% in 2006(P

A Short-time Clinical Study on the Efficacy of Homemade Sterilized Powder for Injection of Rifampicin in the Treatment of Pulmonary Tuberculosis / 中国药房

OBJECTIVE:To study and evaluate the efficacy and safety of homemade sterilized powder for injection of rifampicin(weifunin) in the treatment of pulmonary tuberculosis(PT) and to compared with same import preparation . METHODS:Divide the 121 of bacteriological positive PT patients in the proportion of 1 to 1 with computer automatically into the trial group and the control group used with homemade rifampicin (weifuxin) and import rifampicin(nifu)respectively,the others regimens was same in 2 groups,to evaluate the sputum culture negative conversion rates,X-ray results and adverse drug event etc.after treatment 1 and 2 months . RESULTS: 116 cases were finished ,at the end of 2 month the sputum smear negative conversion rates were 86.21 % and 91.38% (X2=0.780,P=0.377), the sputum culture negative conversion rates were 91.38% and 93.10%(X2=0.120,P=0.729)in the trial group and the control group respectively .The X-ray remarkable effective rates of 2 groups were 82.76% amd 70.69%(X2=2.365,P=0.124)respectively, and the effective rates of the 2 groups were both be 96.55% .The adverse drug event rates were 8.20% and 11.67% respectively, there was on sighificant difference in each indexes .CONCLUSIONS:2 preparation were similar in efficacy ,safety and tolerance.

Morphine preference following prolonged abstinence associated Fos expression in the forebrain / 医学研究生学报

Objectives: To observe the drug seeking behavior in chronically morphine pretreated, abstinent rats and determine brain regions involved in this behavior. Methods: Preferences for morphine associated environments and Fos expression in some brain regions were measured 35 days after withdrawal of chronic morphine treatment. Results: The preference for the morphine environment was greatly increased by morphine pretreatment. The conditioned morphine pretreated group showed significantly higher Fos levels than either the conditioned or non conditioned control groups in the Cg, Ac C, BNST VL, ACE and ABL. Conclusions: A relationship between place preference behavior and neural indices of activation exist in the forebrain in response to morphine conditioned cues, which may be chronically modulated by prior morphine exposure.