ABSTRACT
Objective To explore the changes of whole brain white matter ( WM) structural net-work topological property in patients with schizophrenia (SP) and the associations between WM networks to-pological efficiency and clinical variables in patients. Methods Deterministic tractography was used to con-struct the WM networks of 59 patients with SP ( patients group) and 41 age-, handedness-, and gender-matched healthy controls (HCs),and graph theoretical methods were applied to investigate abnormalities in the global and nodal properties of the WM network in these patients. Partial correlation analysis was used to analyze the relationship between global and nodal properties of the WM network and clinical variables in pa-tients with SP. Results Both the patients with SP and HCs showed small-world organization of the WM net-works. However,compared with HCs,the patients with SP exhibited significant abnormal global topology,in-cluding increased shortest path length ( t=7. 95, P=0. 0001) and decreased global efficiency ( 30. 83 ± 16. 08,8. 25±6. 13,t=-9. 81,P=0. 002),clustering coefficiency (0. 03±0. 01,0. 02±0. 01,t=-4. 48,P=0. 0003),the average clustering coefficiency (t=-8. 28,P=0. 002),the small-worldness (3. 92±0. 79,2. 79 ±0. 56,t=-7. 82,P=0. 001) of their WM structural networks(all P<0. 005,FDR corrected). Further,the patients with SP showed a reduction in nodal efficiency predominately in the cingulate gyrus ( t=-4. 11, P=0. 000),superior occipital gyrus ( t=-6. 05, P=0. 002), superior temporal gyrus ( t=-10. 46, P=0. 001),middle temporal gyrus (t=-10. 38,P=0. 000),thalamus (t=-6. 10,P=0. 000) and putamen ( t=-8. 38,P=0. 000) (P<0. 005,FDR corrected). Partial correlation results showed that there was no signifi-cant correlation between global topological properties,node efficiency and clinical symptoms in patients group (Eglob:r=-0. 14,P=0. 279;Eloc:r=-0. 06,P=0. 628;Lp:r=0. 28,P=0. 031;Cp:r=0. 27,P=0. 043;λ:r=-0. 18,P=0. 166;γ:r=-0. 29,P=0. 026;σ:r=0. 26,P=0. 048;nEglob:r=0. 36,P=0. 005;nEloc:r=0. 02,P=0. 901). Conclusions The patients with SP exhibit the abnormal of whole brain WM structural network topological property and the node efficiencies of cortico-striato-thalamo circuitry are significantly re-duced.
ABSTRACT
Objective To observe the effect of external use of Curcuma oil on the hyperplasia of mammary glands in rats and explore the mechanism. Methods Sixty female Wistar rats were randomly divided into following groups:normal con-trol group, model control group, Sanjierubi plaster group, low-, medium- and high-dose curcuma oil emulsion groups ( n=10 each).The models of hyperplasia of mammary glands were established by intramuscular injection of estradiol benzoate and proges-terone into the medial part of the rat hind limb.Different doses of medicines were given for 4 consecutive weeks.Enzyme-linked im-munosorbent assay, HE staining and immunohistochemistry were used to investigate the action mechanism of curcuma oil emulsion against mammary gland hyperplasia. Results Curcuma oil emulsion had preventive and therapeutic effects on the hyperplasia of mammary glands.The diameter of breasts was significantly reduced, the body weight restored, serum estradiol, follicle-stimulating hormone and prolactin levels profoundly decreased, progesterone, testosterone and luteinizing hormone levels markedly increased and the number and diameter of lobular acini obviously reduced in high-dose curcuma oil emulsion group when compared with those in model control group (P<0.05 or P<0.01). Conclusion Curcuma oil emulsion can remarkably improve the disturb-ance of serum hormones and inhibit the occurrence of hyperplasia of mammary glands.
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Aim: To develop a new preparation consisting of colon adhesive pellets of sodium 4-amino salicylate for the treatment of ulcerative colitis, and to characterize the adhesive of the prepared pellets. Methods: Centrifu-gation-granulation was used to prepare sodium 4-amino salicylate pellets into which HPMC K4M and Carbomer 934P as matrix were incorporated. The pellets were coated with Surlease~((R)), and filled into enteric-coated cap-sules. The release of sodium 4-amino salicylate from the pellets was evaluated in the pH 7. 4 buffer. The adhesive property of the pellets was characterized by evaluating the transit rate of the pellets in the rat intestine in vivo, and by determing the remaining( %) of the pellets in the isolated rat colonic segment in vitro. The adhesive of the pel-lets in vivo was also verified by X-rays. Results: It was shown that the resultant pellets of round shape, good uni-formity in size, and favorable rigidity possessed the colon-adhesive and sustained-release properties. Conclusion:The simple, economical and practical approach was sucessfully utilized in the preparation of sodium 4-amino sa-licylate pellets with the remarked colonic adhesion and targeting.