Objective To investigate the vascular architecture of subdermal vascular network in antebrachial region, and provide anatomic basis for designing the subdermal vascular network skin flap in the antebrachial region. Methods Anatomical observation and measurement of the blood supply, arterial architecture and venous return of the subdermal vascular network skin flap in anterior antebrachial region were performed on 8 fresh adult specimens perfused with latex and black ink. Results It was found that 4～15 or more fine perforators derived from each the terminal end of the brachial artery and radial or ulnar arteries in anterior antebrachial region, and their diameters were between 0.2～0.9 mm. The anatomical studies showed that the fasciocutaneous perforators supplying the in anterior antebrachial region were found to form rich "spider nevus"arterial networks on the subdermal layer. Moreover, the subdermal vascular networks were also found to give off fine arterial branches into papillary and superficial fascia layers, respectively, to form papillary vascular plexus and superficial fascia vascular network, and all of the vascular networks were anastomosed densely each other. The subdermal venous networks were also anastomosized in plexus and drained into the deep vein. Conclusion Either a random or an axial subdermal vascular network skin flap of the anterior arm can be designed according to the need of recipient defect, and the latter may also be designed as a transfer or a free subdermal vascular network skin flap according to the size of the arterial diameter in the pedicle of skin flap.

Objective:To study the anatomic and clinical experience in distally based neuroadipofascial turnover flap incorporating superficial peroneal nerve.Methods:Thirty six (32 preserved and 4 fresh) cadaver lower limbs were used to investigate the blood supply of superficial peroneal nerve and the relationship with the vascularization of its vicinity integument.Distally based neuroadipofascial flap incorporating the nutrifying vessels of superficial peroneal nerve was designed for dorsal foot reconstruction.Results:The proximal part of superficial peroneal nerve was supplied by an accompanying superficial peroneal artery.In the one third part of the lower leg,this artery became an interlacing paraneural vascular plexus and was reinforced by branches from the distal perforators of anterior tibial artery,the supramalleolar perforator of peroneal artery,and the recurrent branches of dorsal pedal artery.Two chain linked longitudinal vascular plexuses (fascial and paraneural) were confirmed in the anterior lower leg integument.In practice,distally based superficial peroneal neuroadipofascial turnover flaps were successfully transferred in 5 cases.The flap measured (10 14) cm?(4 5) cm in size.The pedicle was (3 4) cm in width.The pivot point was located (2 3) cm above the line between medial and lateral malleolus.Conclusion:Distally based superficial peroneal neuroadipofascial turnover flap is a simple and safe procedure with minimal morbidity of the donor site.

BACKGROUND:Fluoride treatment of osteoporosis has been controversial.Literatures addressing the effect of fluoride on bone bio-mechanical parameters of femur in young rats are few.OBJECTIVE:To study the effects of fluoride on bone biomechanical parameters of femur in young rats.METHODS:Ninety 2-month-old SPF Sprague Dawley rats,half male and female,were randomly divided into 9 groups:control group(young,adult and long-time)and drug-administered group(young high-fluoride,young low-fluoride,adult high-fluoride,adut low-fluoride,long-term high-fluoride and long-term low-fluoride).Rats in the control group were orally administered with physiological saline,while in the drug-administered group were given orally with different dose fluoride at the corresponding times.After experiment,rats were sacrificed under anaesthesia.Three-point bending test was performed at the left femur.The effects of fluoride on maximum load and rigidity of femur were measured.RESULTS AND CONCLUSION:Compared with young control group,the maximum load and the rigidity of femur in the young high-fluoride group were decreased by 13.18%and 13.61%,respectively(P＜0.05),which had no dramatically difference in the young low-fluoride group.Compared with long-term high-fluoride group,the maximum load and the rigidity offemur in the young high-fluoride were decreased by 17.22%and 17.17%(P＜0.05),which were obvious increased in the long.term low-fluoride grou by 18.33%and 19.15%,respectively(P＜0.05).The maximum load and the rigidity of femur were strengthened in the adult high-fluoride and adult low-fluoride groups(P＜0.05).The results suggested that young rats are more sensitive to high-dose fluoride,which can reduce bone quality in rats.The negative effects on bone quailty of rats were gradually displayed as the prolongation of the period of fluoride.

BACKGROUND:The mechanical properties of monkeys are the closest to the human body.Monkey is the ideal animal model of osteoporosis research.OBJECTIVE:To explore the biomechanical properties of the long bones and vertebrae in rhesus monkeys.DESIGN.TIME AND SETTING:The mechanics experiment for the study was based on monkeys,which was completed in the South Medical University,Key Laboratory of Medical Biomechanics in Octobor 2006.MATERIALS:Four male macaca mulattas aged 17.5 years on average and three female crab-eating monkeys aged 9 years on average.METHODS:Long bones(femur,tibia,fibula,humerus,radius and ulna)and the third and fourth lumbar vertebrae of three adult crab-eating monkeys and four old macaca mulattes were teken to do four-point bending test,torsion test,indentation test and compression test respectively.MAIN OUTCOME MEASURES:①The results of compression experiments and indentation experiments in monkey vertebrae.②The maximum load and the rigidity factor in left side of long bone of monkeys.③The maximum torque(N·m)in the right side of long bone of monkeys.RESULTS:①In the four-point bending tests,the maximum Ioad of the left ulna,fibula,humerus,femur,tibia and radius in macaca mulattas were(574.16±163.53),(179.98±38.32),(1487.9±965.12),(1928.60±336.23),(1303.23±969.35),(559.92±1.12)N,respectively.While the rigidity factor of the left femur,tibia,fibula,humerus,radius and ulna in macaca mulattas were (53.49±14.22),(28.41±5.86),(114.22±13.24),(142.16±18.56).(101.11±15.46),(69.13±5.54)N/mm,respectively.The maximum load of the left femur,tibia.fibula,humerus,radius and ulna in crab-eating monkeys were(179.93±19.38),(53.82±5.31),(631.61±225.81),(726.07±245.69),(424.52±49.s0),(1 91.97±67.73)N,respectively;however,the rigidity factor of the left femur,tibia,fibula,humerus,radius and ulna in crab-eating monkeys were(21.45±2.63),(16.25±6.66),(68.5±12.22),(76.79±14.01),(41.80±2.79),(64.31±15.89)N/mm,respectively.②In the torsion test,the maximum torque of the right fibula,humerus,femur and tibia in macaca mulattas were(1.55±0.82),(22.26±4.26),(30.93±6.54),(17.49±4.04)N·m,respectively.The maximum torqua of the right fibula,humerus,femur,tibia in crab-eating monkeys were(0.81±0.15),(10.34±2.06),(11.58±0.76),(6.68±1.34)N·m,respectively;③In the compression test,the maximal compression load and the rigidity factor of L4 in macaca mulattas were (2811.21±403.90)N,and(69.47±8.92)N/mm,respectively;the maximal compression load and the rigidity factor of L4 in crab-eating monkeys were(1659.90±339.08)N,and(36.29±6.61)N/mm,respectively.④In the indentation test,the maximal indentation and the maximal anti-pressure of L_3 in macaca mulattas were(521.90±38.94)N,and(699.16±43.46)MPa,respectively;the maximal indentation and the maximal anti-pressure of L_3 in crab-eating monkeys were(614±145.94)N,and (815.92±193.69)MPa,respectively.CONCLUSION:Experimental data derived from the experiments demonstrated that rhesus monkeys as a kind of nonhuman primate animals have an important reference value in the animal studies of osteoporosis.

Objective To investigate psychosocial factors for post-stroke depression (PSD). Methods 405 in-pa-tients with stroke were first screened for depression using Comprehensive International Diagnostic Interview-3.0. 22 pa-tients with depression were recruited as the depression group. From 383 patients without depression, 44 patients were se-lected and served as the non depression controlled group according to the sex and age paired with 1:2. Both groups were measured by using questionnaires including Life Event Scale, Simplified Coping Style Questionnaire, Social Support Rat-ing Scale, Activities of Daily Living Scale and Quality of Life Enjoyment and Satisfaction Questionnaire, Short Form. Re-sults The score of passive coping was significantly higher in depression group than in non depression group [(1.2 ± 0.5) vs. (0.8±0.7), P<0.05]. The score of subjective support was significantly lower in depression group than in non depression group [(17.5±4.0) vs. (20.7±4.6), P<0.05]. Logistic regression analysis showed, minority nationality (OR=2.564, 95%CI:1.039~6.327) and passive coping style (OR=2.223, 95%CI:1.052~5.192) were risk factors for PSD, while subjective sup-port was protective factor for PSD (OR=0.884, 95%CI:0.793~0.986). Conclusions Passive coping style and low subjec-tive support may be the important psychosocial factors of PSD.

Objective To explore the abnormally functional brain regions of female patients with depression by resting state functional magnetic resonance imaging (fMRI),and analyze the correlation with the severity of depressive symptoms.Methods 32 female patients diagnosed with depressive disorder and 40 matched healthy controls completed resting state fMRI scans.The whole brain's regional homogeneity (ReHo) and amplitude of low-frequency fluctuation(ALFF) were calculated,and the correlation analysis be tween ReHo and ALFF of brain regions with significant difference and the severity of depressive symptoms was conducted.Results Compared with control group,the left precuneus/left cuneus (MNI:-18,-81,45),bilateral precentral gyrus (MNI:-58,-5,35 and 57,-6,33),left inferior parietal lobule (MNI:-42,-36,45) and right inferior temporal gyrus(MN1:60,-45,-18) (P＜0.05,corrected by AlphaSim)in the case group showed significantly decreased ReHo,with statistical significance.Compared with control group,the left cuneus(MNI:-3,-87,30),right inferior temporal gyrus(MNI:60,-48,-18) and left precentral gyrus(MNI:-63,-3,26) (P＜0.05,corrected by AlphasSim)in the case group showed significantly decreased ALFF.The ReHo in the right inferior temporal gyrus was negative correlated with the HAMD-17 total score and retarda tion factor(r=-0.484,P=0.017;r=-0.408,P=0.048),the ALFF in the right inferior temporal gyrus was positively correlated with weight factor(r=0.574,P=0.003),and negative correlated with the number of depressive episodes(r=-0.416,P=0.043).Conclusion Female with depression in resting state have several abnormally functional brain regions and the extent of damage is correlated with the severity of depressive symptoms.Combination of the two parameters may yield a more comprehensive pathophy-siological mechanism for depressive disorder.

Objective:To compare the cognitive functions in patients with depressive disorder,hyperlipidemia disorder,and comorbid both of the disorders.Methods:A cross-sectional study was performed in age,gender and education year matched patients with depressive disorder (n =51)(according to the ICD-10),hypedipidemia(n =38) (according to the Chinese adult lipid guideline),comorbid both of the disorders(n =40) and normal controls (n =56) were recruited in this study.All subjects received a battery of neuropsychological tests to access the anxiety and depression symptoms and cognitive function.Results:The scores of MoCA were lower in the patients with comorbid both disorders and patients with depression than patients with hypedipidemia [(24 ± 3),(24 ± 4)vs.(26 ± 3),Ps ＜0.05],and were lower in patients with depression than in normal controls(25 ±3),P ＜0.05.Stroop color test amends numbers were higher in patients with comorbid disorder than in the other three groups (Ps ＜0.05).The scores of immediate and delayed logical memory were higher in patients with hyperlipidemia than in other three groups (Ps ＜0.05).The total number of words in verbal fluency test were lower in patients with comorbid disorders and patients with depression than in patients with hyperlipidemia (Ps ＜0.05).Wisconsin card sorting test category completes were lower in patients with comorbid disorders and patients with depression than in patients with hyperlipidemia and normal controls (Ps ＜ 0.05).The scores of persistent errors were higher in patients with comorbid disorders and patients with depression than in patients with hyperlipidemia and normal controls (Ps ＜0.05).Conclusion:In this study,patients with depressive disorder have impairment of cognitive function,while hyperlipidemia may probably do not impair cognitive function.

Objective To investigate the change of AQP1 and AQP2 before and after the release of obstruction and explore the relationship between reabsorption dysfunction of renal tubule and the change of AQPs. Methods The model of unilateral ureter obstruction (UUO) was established by surgery. Western blot and immunohistochemistry were used to study the expression of AQPs before and after obstruction. Results In UUO model, both AQPs began to down-regulate one day after obstruction, the expression of both AQPs became lower one day after the release of obstruction. And they started to up-regulate 7 day after the release of obstruction. AQP2 became normal since 14 days after the release of obstruction, and AQP1 became normal since 21 days after the release of obstruction. Conclusion The expression of AQP1 and AQP2 were descended in hydronephrosis. The dysfunction of renal tubule and the osmotic-dependent polyuria after the release of obstruction in UUO were caused by the down - regulation of AQPs.

Objective:To explore the traits of functional connectivity of resting-state networks in patients of schizophrenia with auditory verbal hallucinations (AVH) by using independent component analysis (ICA).Methods:All patients were met the Diagnostic and Statistical Mannal of Mental Disorders,Fourth Edition,Text Revision (DSM-IV-TR) diagnostic criteria for schizophrenia.Thirty schizophrenia patients with frequent AVH (AVH),24 schizophrenia patients without AVH (non-AVH) and 60 healthy controls (HC) matching with age and gender were analyzed by resting functional magnetic resonance imaging.The AVH were assessed by using Hoffman auditory hallucination scale.By using ICA,auditory network (AUN),language network (LAN),salience network (SAN),right front-parietal network (RFP) and default mode network (DMN) were selected as interesting networks for further analyses.Covariance analysis was used to compare the activity and functional connectivity of multiple resting state networks between three groups,and correlation analysis was used to evaluate the relations between abnormalities of brain and the severity of hallucination.Results:Compared to non-AVH,AVH group showed increased activity in left superior temporal gyrus (STG) and left postcentral gyrus (LPG) in the AUN,and showed decreased activity in right anterior cingulate cortex (ACC) in the SAN (P ＜ 0.05,FDR corrected).The severity of AVH group was associated with activity of the left STG (r =0.43,P ＜0.05) and the right ACC (r =-0.48,P ＜0.01).Furthermore,compared to non-AVH group,there were decreased connectivity between LAN and AUN [(-0.29 ±0.21) vs.(-0.16 ± 0.17),P ＜ 0.05,uncorrected],decreased connectivity between SAN and LAN [(-0.09 ± 0.22) vs.(-0.06 ± 0.18),P ＜ 0.05,uncorrected],increased connectivity between SAN and AUN [(0.30 ± 0.18) vs.(0.15 ± 0.24),P ＜ 0.05,uncorrected] in AVH group.Conclusion:There may be aberrant functional connectivities of AUN,LAN and SAN in schizophrenia patients with frequent AVH,and the occurrence of AVH seems to be related to brain areas involved in language production,speech perception and self-monitoring.

This study was aimed to detect the effects of alcohol on bone metabolism and biomechanical property of growing mice. Thirty KM mice were randomly divided into 3 groups, namely basal control group (mice were killed at the beginning), normal control group (with distilled water given by gastrogavage), and 50% (V/V) alcohol group (with alcohol given by gastrogavage at the dose of 4 g x kg(-1) x d(-1) for 60 days). All mice were killed and their proximal tibia and tibial diaphysis were processed by undecalcified sections and measured by bone histomorphometry. The biomechanical properties of lumbar vertebra and femur were tested. Compared with normal control, the index of trabecular bone area (% Tb. Ar) of proximal tibial metaphysis (PTM) and the static parameter of cortical bone( Ct. Ar) both decreased obviously (P < 0.05) in alcohol group. Bone formation rate (BFR/TV) of trabecular bone and cortical bone dropped also (P < 0.05). The maximal resistibility of lumbar vertebra and structural mechanical strength of proximal femoral neck both declined significantly (P < 0.01) in alcohol group. Low dose of alcohol inhibited the bone formation rate of growing mice , thus leading to a disorder of bone metabolism and a decrease in biomechanical quality.
Animals ; Biomechanical Phenomena ; Bone Density ; drug effects ; Bone and Bones ; drug effects ; metabolism ; Ethanol ; adverse effects ; pharmacology ; Female ; Male ; Mice ; Random Allocation