Objective To investigate the possible role of orexin in reproduction and examine the changes in the expression of orexin and its receptors(OX1R,OX2R) in the rat hypothalamus during pregnancy,parturition and lactation. Methods The expressions of prepro-orexin(prepro-OX),orexin-A,OX1R,and OX2R in the rat hypothalamus during pregnancy,parturition,and lactation were evaluated by competitive reverse transcription-polymerase chain reaction(RT-PCR) and immunohistochemistry assay. Results Orexin-A immunoreactive(ir) neurons and the OX1R subtype in neuronal cell bodies were mainly located in the lateral hypothalamic area(LHA) as well as in the magnocellular neurons of the paraventricular and supraoptic nuclei respectively in pregnant and lactating rats.The prepro-OX and OX1R mRNA levels on the 1st day of lactation were significantly higher than that during late pregnancy and lactation.No significant changes of OX2R expression were observed during the various reproductive phases.Conclusion Orexin might be involved in regulating reproductive function in early lactation through their binding sites in hypothalamic PVN and SON.

Objective To investigate a possible role of orexin in the regulation of estrous cycle by examining the expression of orexin and orexin receptors(OX1R,OX2R) in the rat hypothalamus during the estrous cycle. Methods The levels of prepro-orexin(prepro-OX),orexin-A,OX1R,and OX2R in the rat hypothalamus during the estrous cycle were evaluated by competitive reverse transcription-polymerase china reaction(RT-PCR) assay. Results Only expression OX1R mRNA during late proestrus was significantly higher than that at metestrus.No significant changes of prepro-OX and OX2R mRNA expression were observed during the various estrous cycle phases.Conclusion Orexin might regulate the secretion of GnRH and/or LH by binding OX1R,contributing to the occurrence of ovulation.

Objective To explore the clinical and pathological characteristics of neurological lesions in systemic lupus erythematosus (SLE).Methods The clinical and pathological data of 6 SLE patients with neurological lesions were analyzed retrospectively.Results Clinically, the central nervous system was involved in four patients with presentation of epilepsy in one case, cerebral infarction in two cases and leukoencephalopathy in one case. Mononeuropathy was involved in three cases. Pathologically, sural nerve biopsies disclosed typical vasculitis in one of three cases. There were loss of myelinated fibers, segmented and dark-stained axons and myelin, and myelin bead formation in the sural nerves. Muscular biopsy of one case showed mild degeneration and necrosis. Three skin biopsies demonstrated degeneration of fibrinogen, perivenous infiltration of inflammatory cells.Conclusions SLE may lead different damage of nervous system. Therefore, the changes of its clinical and pathological manifestations are complicated.

[Objective]To investigate the late results of pedicle screw system and cage fixation for lumbar broken isthmus spondylolisthesis.[Method]Totally 86 patients with broken isthmus spondylolisthesis were collected and analyzed from October 1996 to October 2002,they were all reduced and fixed with pedicle screw system and cage.Group 1,62 patients were put one cage in the interbody at an angle of 45 degree from posterior to anterior,while Group 2,24 patients were put two cages in the interbody vertically from posterior to anterior.The height of interbody and the most proximal interbody' s height were measured,the rate was calculated.These rate were acquired preoperatively,2 weeks postoperatively and follow-up period respectively.[Result]The follow-up period was 24~96 months,averaged 35 months.The excellent and good rates were 80.23 per cent,according to Nakai standard.Ninteen patients with one degree spondylolisthesis were reduced anatomically after surgery.Fifty-one patients with two degree spondylolisthesis were reduced anatomically except 5 patients with one degree spondylolisthesis left.Sixteen patients with three degree spondylolisthesis were reduced anatomically except 4 patients with one degree spondylolisthesis left.There were loss of spondylolisthesis reduction at follow-up period comparing with 2 weeks postoperatively in two groups.However there was no statistical significance between the two groups.[Conclusion]Lumbar spondylolisthesis should be treated with pedicle screw system and cage,which may decrease the complications such as broken screw and spondylolisthesis recurrency postoperatively.One piece of cage is enough to make interbody stable.It is also an ideal procedure for lumbar spondylolisthesis.

[Objective] To evaluate the efficiency of Halovest external immobilization on the treatment of traumatic cervical fracture or dislocation.[Method]From February 1997 to July 2005,129 patients with cervical fracture or dislocation were treated in our hospital;all the patients were divided into two groups randomly.First group: 70 patients were treated with Halo-vest traction,among them 31 patients were treated with Halo vest combined jacket orthosis;others were treated with Halo vests and surgery(anterior route approach 18 cases,posterior route approach 17 cases,4 patients operated by anterior and posterior approach).The second group: 59 patients were treated with skull traction.Among them 13 patients were treated with skull traction and orthosis,others were treated with skull traction and surgery(anterior route approach 22 cases,posterior route approach 20 cases,4 patients operated by anterior and posterior approach).[Result]All the patients were followed 6~48 months(average 12 months).There was no statistical significance in two groups with reduction of upper cervical spine fracture and dislocation.However on the reduction of lower cervical injury groups,the prognosis with Halo-vest is significantly better than the other group.And the time for bed rest was much less than the skull traction.All the patients' spinal cord function improved obviously after treatment.[Conclusion]Halo-vest external fixation is an easy and effective way to treat cervical injuries.It can improve the reduction of the cervical injuries and it's capability of reduction and maintenance are much better than skull traction.

Objective To investigate the clinical and pathological features of lymphomatoid granulomatosis(LG).Methods The data of clinic and the results of pathological study of brain biopsy which stained by immunohistochemical method were reviewed in one case with LG.Results The patient was presented with headache,dizzy,slurred speech and myasthenia of limbs.MRI showed abnormal signals on bilateral cerebral white matter,pons,cerebellum and cervical-thoracic spinal cord.Gd-enhanced imaging showed punctiform enhancement.The protein and IgG in cerebrospinal fluid elevated slightly.Brain biopsy showed angiocentric,angiodestructive granuloma formation combined with infiltration of multiple cells.The infiltrated cells confirmed immunohistochemically were lymphocytes and mononuclear phagocytes.In situ hybridization technique showed EBV positive.The status of this patient improved after radiotherapy and glucocorticosteroid treatment.Conclusion LG lacks characteristic features in clinic,laboratory and radiological examinations,so the pathological examination is important for diagnosis of this disease.

Objective To investigate the clinicopathological features and the pathogenesis of rhabdomyolysis caused by exertional heat stroke.Methods Eight patients including 6 military soldiers and 2 physical exercisers trained under high temperature environment were enrolled into this study.Their clinical manifestations were compatible with the diagnostic standard of exertional heat stroke.Consecutive blood biochemistry tests were performed in all patients,and electromyography and muscle biopsy in 3 cases.Results Eight patients were all male,with average age of 27.4 years old.The main clinical characteristics included myalgia in 4 patients,muscle weakness in 2 patients,fever in 5 patients,and tea-colored urine in 3 patients.One patient had acute renal failure,and 2 patients developed multiple organ failure syndromes and disseminated intravascular coagulation.One muscle biopsy done in the third day after the onset showed obvious muscle necrosis without inflammatory infiltrates,while the other 2 muscle biopsy done 2 weeks after the onset showed muscle necrosis companied by inflammatory phagocytic response.Six patients full recovered,1 patient partially recovered and one patient died.Conclusions Rhabdomyolysis caused by exertional heat stroke predominantly occurred in males.The main clinical features include muscle pain,weakness,significantly elevated serum creatine kinase and myoglobin level and myoglobinuria.Muscle pathology indicated muscle necrosis in the early stage and accompanied inflammatory infiltrates in the late stage.Most patients will get recovered with prompt diagnosis and treatment while the severe cases can be life-threatening.

Objective To investigate the correlation between prestroke comorbidity and long-term outcomes in patients with acute cerebral infarction.Methods Consecutive acute ischemic stroke patients who were hospitalized were prospectively recruited from August 2010 to November 2012.Six hundred and forty-four patients were enrolled,the baseline data including Charlson Comorbidity Index (CCI),National Institute of Health Stroke Scale (NIHSS) score,type of Oxfordshire Community Stroke Project (OCSP:total anterior circulation infarct,partial anterior circulation infarct,posterior circulation infarct and lacunar infarct) were recorded.And recovery was assessed by modified Rankin Scale (mRS) 90 days after stroke by telephone interview (mRS score ≤ 2 reflected good prognosis,and mRS score ＞ 2 reflected unfavorable prognosis).Because CCI included specific comorbidity,we considered CCI,CCI without specific comorbidity and specific comorbidity as variable respectively.After screening the risk factors affecting prognosis using univariate analysis,the relationship between comorbidity and prognosis was estimated using multinomial logistic regression model.Results CCI was an independent predictor of good prognosis and unfavorable prognosis (OR =3.446,95％ CI 1.662-7.417; P =0.001).Congestive heart failure and diabetes were each independent predictor of good prognosis and unfavorable prognosis also (diabetes:OR =2.584,95％ CI 1.709-3.906,P =0.000; congestive heart failure:OR =6.229,95％ CI 1.705-22.755,P =0.006).Conclusions After acute ischemic stroke,the patients with the higher CCI score,diabetes and congestive heart failure are more likely to achieve unfavorable outcome.CCI,diabetes and congestive heart failure can each be used as a sensitive index to evaluate the 90 d prognosis of patients.Trial registration Clinical Research Center of China (CHiCTR-OCH-14004228)

Objective To investigate the distribution of moderate to severe cancer pain and administrated dose of opioid drugs in order to provide the reference for the treatment of moderate and severe cancer pain.Methods Retrospective analyzed the clinical data of 146 patients with moderate to severe cancer pain.The information were recorded including opioid use dose,cancer pain incidence,age,gender,height,weight,body surface area and type of tumor.Results There were no significant difference among patients with opioids drug administration in terms of gender,average daily oral dose(x2 =0.473,Z =-0.185,P ＞ 0.05).Meanwhile cancer incidence rate was same in different age groups (x2 =2.280,P =0.684).The average daily opioid dose in patients with over 80 year old was the lowest among other age groups (Z =-2.745,-1.986,-2.141,-2.162;P ＜0.05).Cancer pain incidence in patients with hepatobiliary pancreatic tumors were 67.50％ (27/40),highest than other different types cancer including metastatic tumor(62.50％ (10/16)),urinary tumor (61.54％ (8/13)),lung cancer (52.63％ (50/95)),breast cancer and gynecological tumor (50.00％ (17/34)),gastrointestinal tumor(41.94％ (26/62)),other tumors 38.46％ (5/13) and head and neck tumor(25.00％ (3/12)),the difference was statistically significant (x2 =23.672,P ＜ 0.05).The average day oral morphine dose of different types tumor were listed as followed from high to low in the order:160 (80,200) mg of metastatic tumors,120 (60,160) mg of breast and gynecological tumor,100 (40,125) mg of lung cancer,90(45,115) mg of urinary tract tumors,80(60,160) mg of other tumors,70(50,90) mg of hepatobiliary pancreatic tumor,60 (40,80) mg of gastrointestinal tumor,55 (40,70) mg of head and neck tumor.There were significant differences in terms of among oral morphine dose per day of different type tumors (H=14.280,P ＜0.05).No correlation was found between pain patients with height,body mass,body surface area and average daily dose of morphine (r =-0.045,-0.042,-0.046 ; P ＜ 0.05).Conclusion No significant differences were found in terms of moderate to severe cancer pain among different type tumors at different and age groups.While there is significant difference in term of cancer pain incidence among different tumor types.The average daily amount of morphine in patients with cancer pain is not related to gender,height,body mass and body surface area.The average amount of morphine of patients with age over 80 years old is significantly lower than that of the other age groups,and the average amount of morphine t is related to cancer type.

BACKGROUND: Frenulum of prepuce of penis contained many nerve terminals is an extremely sensitive region. If the frenulum is injured in circumcision or other operations, the complication, such as postoperative spontaneous pain of penis, sexual disturbance and so on, will occur. But there still is no define explanation for this up to now.OBJECTIVE: To observe the distribution of immunoreactive nerve terminal of calcitonin gene-related peptide (CGRP) in prepuce of penis and frenulum of prepuce of adult SD rats, and look for the source of CGRP immunoreactive nerve terminal in frenulum of prepuce.DESIGN: A single sample trial.SETTING:Department of Anatomy, School of Medicine, Zhejiang University.MATERIALS: The experiment was performed at Department of Anatomy,School of Medicine. Zhejiang University from September 2004 to May 2005. A total of 20 adult male SD rats were selected, and were raised in warm, quiet, photophygous environment for 1 week before the trial so as to make the rats fit for the environment and maintain their basal state.METHODS: The rats were assigned randomly into 2 groups. Ten rats in the first group were treated with the immunohistochemical method to observe the distribution of CGRP immunoreactive nerve terminal in prepuce of penis and frenulum of prepuce of adult rats. Ten rats in the second group were treated with fluorogold (FG) retrograde labeled combined with CGRP immunofluorescence labeled method to look for the source of CGRP immunoreactive nerve terminal in frenulum of prepuce of penis. MAIN OUTCOME MEASURES: ①The morphology and distribution of CGRP immunoreactive nerve terminal in prepuee of penis and frenulum of prepuce of adult SD rats were observed under light microscope. ②The distributive density and difference of CGRP immunoreactive nerve terminal in prepuce of penis and frenulum of prepuce were detected and compared (represented by A). ③Morphology and distribution of FG retrograde labeled -positive, CGRP single-labeled positive and FG/CGRP double-labeled positive neurons in dorsal root ganglion were observe under fluorescence microscope. ④Mean quantity of FG retrograde labeled positive, CGRP single abeled positive and FG/CGRP double-labeled positive neurons in dorsal root ganglion was counted.RESULTS: Totally 20 rats were involved in the analysis of results. ① Amber-coloured CGRP immunoreactive nerve terminal appeared in prepuce of penis and frenulum of prepuce of adult rats. These nerve terminal mainly occurred in basal layer of epidermis and papillary layer of dermis, distributed as twig shape or intestiniform; mostly of them were bundled, different in length, and some of them showed enlarged nodosity. ②The distributive density of CGRP immunoreactive nerve terminal in frenulum of prepuce of penis was significantly larger than that in prepuce of penis (2.15±0.32, 1.02±0.22,t =-2.03,P＜0.01). ③Combined with the FG retrograde labeled method it was found that these nerve terminal was derived from neurons of dorsal root ganglion opposed to the sixth lumbar spinal cord and the neurons of dorsal root ganglion opposed to the first acral spinal cord. FG retrograde labeled positive neurons differed in length. The cell body showed round or orbicular-ovate, without obvious prominence. Bright inaurate fine particle appeared in cytoplasm, no label in nucleus. Most cells arranged in line along nerve tract or diffusedly distributed. Most CGRP single-labeled positive neurons were middle or small cells found by CGRP immunofluorescence labeling. Dyeing was too dark.Reaction product distributed evenly in cytoplasm, which showed bright dark green (FITC labeled color). The same positive section was observed comparatively under different excitation light. It was found that FG/CGRP double-labeled positive cells were middle or small, and its amount accounted for a half of the total number of FG retrograde positive cells.CONCLUSION: CGRP may participate the transmission of sensory information in prepuce of penis and frenulum of prepuce of rats. The CGRP immunoreactive nerve terminal in frenulum of prepuce of penis of rats is sourced from neurons of dorsal root ganglion opposed to the sixth lumbar spinal cord and the neurons of dorsal root ganglion opposed to the first sacral spinal cord.