Objective To investigate the impact of different δ-catenin expression levels on brain small-world network alterations before and after chemotherapy in breast cancer patients using resting-state function-al MRI(rs-fMRI).Methods A total of 66 breast cancer patients who were pathologically diagnosed and did not receive the first chemotherapy were included and divided into the high-expression(DH)group(n=31)and the low-expression(DL)group(n=35)according to the expression level of δ-catenin.rs-fMRI were per-formed before and after chemotherapy respectively to calculate the attributes of the brain small-world net-work,including parameters such as node local efficiency(NE),betweenness centrality(BC),degree centrality(DC)and the changes in the attributes of the brain small-world network of patients before and after chemo-therapy were analyzed.Results There was no statistically significant difference in the longitudinal comparison of network indicators such as small-world coefficient(σ),characteristic path length(λ),cluster coefficient(γ),local clustering coefficient(Cp),average shortest path length(Lp),global efficiency(Eg),and local effi-ciency(Eloc)before and after chemotherapy between the DL group and the DH group(P>0.05).In the DL group,post-chemotherapy NE values was decreased in the left olfactory cortex,bilateral orbital superior fron-tal gyri,right gyrus rectus,and left caudate nucleus,while increased in the bilateral central operculum,left su-perior parietal gyrus,right superior temporal gyrus,and temporal pole of the right superior temporal gyrus.In the DH group,post-chemotherapy NE values was decreased in the bilateral supplementary motor area and right angular gyrus,and right superior temporal gyrus,but increased in the left globus pallidus.Post-chemo-therapy BC values in the DL group was decreased in the left pericalcarine cortex,right lingual gyrus,and left caudate nucleus,and increased in the left medial superior frontal gyrus.In the DH group,post-chemotherapy BC values was decreased in the right supplementary motor area and right caudate nucleus,while increased in the right posterior cingulate gyrus and left globus pallidus.Post-chemotherapy DC values in the DL group was decreased in the left supplementary motor area,right gyrus rectus,and left caudate nucleus,but increased in the right opercular part of the inferior frontal gyrus,right central operculum,right temporal pole of the superi-or temporal gyrus,right superior temporal gyrus,left superior parietal gyrus,left angular gyrus,and bilateral supramarginal gyri.In the DH group,post-chemotherapy DC values was decreased in the left precentral gyrus,bilateral supplementary motor areas,left fusiform gyrus,right angular gyrus,and right superior temporal gy-rus,while increased in the left globus pallidus.Conclusion The high expression of δ-catenin may further ag-gravate the damage of chemotherapy to the brain small-world network of breast cancer patients,mainly invol-ving motor and cognition-related brain regions.

Objective To explore the impact of δ-catenin expression level on resting-state brain function in breast cancer patients.Methods Totally 104 female breast cancer patients were prospectively enrolled and divided into δ-catenin high expression group(DH group,n=51)and δ-catenin low expression group(DL group,n=53)according to δ-catenin expression level,while 36 female healthy volunteers were selected as controls(control group).Neuropsychological tests were performed,and resting-state functional MRI(rs-fMRI)were acquired,then parameters of brain function,including amplitude of low frequency fluctuation(ALFF),fractional ALFF(fALFF),regional homogeneity(ReHo)and functional connectivity strength(FCS)of brain regions with differences among groups were obtained.Spearman correlation analysis was used to evaluate the correlations of function parameters of brain regions with general data and neuropsychological test scores.Results Significant differences of fALFF,ReHo and FCS values were found among 3 groups(familywise error rate[FWE]correction,all P＜0.05).fALFF value of left inferior temporal gyrus in DH and DL groups were both higher than that in control group(FWE correction,both P＜0.05),ReHo value of right inferior temporal gyrus in DH group,as well as of right middle temporal gyrus,right inferior temporal gyrus and right fusiform gyrus in DL group were all lower than that in control group(FWE correction,all P＜0.05),FSC value of left lenticular nucleus,left putamen,left fusiform gyrus,left calcarine fissure surrounding cortex and left inferior temporal gyrus in DH group were all higher than that in DL group(FWE correction,all P＜0.05),FSC value of left lenticular nucleus,left putamen,left fusiform gyrus and left calcarine fissure surrounding cortex in DH group were all higher than that in control group(FWE correction,all P＜0.05),while FSC value of left lingual gyrus,left lenticular nucleus and left putamen were both higher than that in control group(FWE correction,both P＜0.05).In brain regions with different fMRI indexes between DH group and DL group,FSC values were lowly positively correlated with CogPCA results(r=0.313,P＜0.05).In brain regions with different fMRI indexes between DH group and control group,fALFF value were lowly positively correlated with trail making test A(TMT A)and trail making test B(TMT B)(r=0.301,0.310,both P＜0.05),ReHo values were lowly negatively correlated with TMT B(r=-0.307,P＜0.05),FCS values were weakly/lowly positively correlated with TMT A and TMT B(r=0.282,0.309,both P＜0.05)and lowly negatively correlated with results of digital symbol substitution test(DSST)(r=-0.363,P＜0.05).In brain regions with different fMRI indexes between DL group and control group,fALFF values were weakly/lowly negatively correlated with results of mini mental state examination(MMSE),Montreal cognitive assessment(MoCA),auditory verbal learning test(AVLT)short-term memory and DSST(r=-0.399,-0.362,-0.344,-0.288,all P＜0.05).Conclusion The expression level of δ-catenin had certain impact on brain function of breast cancer patients,resulted in asymmetry changes of brain network in bilateral hemispheres,as well as memory loss through affecting left inferior temporal gyrus,left lenticular nucleus,left putamen and left fusiform gyrus.

Objective To explore the clinical and imaging characteristics of synovitis,acne,pustulosis,hyperostosis,osteitis(SAPHO syndrome),to improve the recognition of this disease.Methods Clinical and imaging data were respectively analyzed in 12 SAPHO patients with the review of literature.Results In the 1 2 SAPHO cases,9 were females and 3 were males,with an average age of (45 ±6)years.All the 1 2 cases had bone changes on the anterior-superior chest wall,which manifested as osteosclerosis,hyperplasia and joint destruction.There were 5 cases manifested as symmetrical lesion which were the typical sea gull sign or cow head sign with the proportion of 41.7%.There were 4 cases with the lesion involving the spine including 3 cases in the thoracic vertebra and 1 case in the lumbar vertebra,which showed the erosion and sclerosis in the endplates and destruction of the anterior and posterior vertebral angles.There were 2 cases with the lesion involving the sacroiliac joints,including 1 unilateral and 1 bilateral case,which showed as joint destruction.In the 12 cases,there were 11 cases with obvious cutaneous pathological changes,including palmoplantar pustulosis in 8 cases and acne in 3 cases.Conclusion SAPHO syndrome can be diagnosed by combining skin lesions and bone changes on the patient’s anterior-superior chest wall.