scholarly journals Corona radiata (Gray's illustration)

2021 ◽  
Author(s):  
Craig Hacking
Keyword(s):  
Corona Radiata

Globoidzell-Leukodystrophie bei einem West Highland White Terrier

2008 ◽  
Vol 36 (05) ◽  
pp. 351-356
Author(s):  
K. Matiasek ◽  
D. Henke ◽  
V. Grevel ◽  
Th. Flegel
Keyword(s):  
Corpus Callosum ◽  
Liquor Cerebrospinalis ◽  
Corona Radiata ◽  
Klinische Relevanz

Zusammenfassung: Gegenstand: Ein 10 Wochen alter, männlicher West Highland White Terrier wurde aufgrund von Lähmungserscheinungen der Hintergliedmaßen und kontinuierlichem Kratzen an der Brustwand zur diagnostischen Abklärung vorgestellt. Material und Methoden: Nach der neurologischen Untersuchung wurde einer MRT-Untersuchung des Gehirns an einem 0,5-Tesla-Kernspintomographen durchgeführt. In der gleichen Narkose erfolgte die Ableitung akustisch evozierter Hirnstammpotenziale und eine Entnahme von Liquor cerebrospinalis. Die MRT-Untersuchung des Gehirns wurde 3 Wochen später wiederholt und beide Datensätze verglichen. Aufgrund eines positiven DNA-Tests für Globoidzell-Leukodystrophie wurde der Hund nach der zweiten MRT-Untersuchung euthanasiert und das Nervensystem histopathologisch untersucht. Ergebnisse: In der MRT-Untersuchung zeigte sich in T2-gewichteten und in FLAIR-Sequenzen eine bilateral symmetrische Signalhyperintensität in der Capsula interna, im Corpus callosum und in der Corona radiata. Ähnliche, aber weniger offensichtliche Erhöhungen der Signalintensität waren auch in T1-gewichteten Aufnahmen erkennbar. Die Analyse des Liquor cerebrospinalis ergab weitgehend unauffällige Befunde. Die Verlaufs-MRT-Untersuchung konnte trotz Progression der klinischen Symptomatik keine Zunahme der pathologischen Veränderungen in den unterschiedlichen Sequenzen darstellen. Die abgeleiteten akustisch evozierten Hirnstammpotenziale zeigten Zunahmen der peripheren und zentralen Latenz als Ausdruck einer Demyelinisierung. Histopathologisch fanden sich in allen Bereichen des ZNS bilateral-symmetrische Entmarkungen mit hochgradigem Untergang von Oligodendrozyten sowie mittelgradiger fibrillärer Astrogliaproliferation und oft nestartiger, perivaskulär akzentuierter Ansammlung von einbis mehrkernigen Globoidzellen mit feinvakuolärem oder granuliertem, PAS-positivem Zytoplasma. Schlussfolgerung und klinische Relevanz: Das Auftreten von bilateral symmetrischer Signalhyperintensität der weißen Substanz in T1– und T2-gewichteten Sequenzen sollte bei einem jungen Hund den Verdacht auf eine generalisiert demyelinisierende Erkrankung lenken. Bei einem West Highland White Terrier wäre die Verdachtsdiagnose unter diesen Umständen eine Globoidzell-Leukodystrophie.

Changes in mild cognitive impairment and its subtypes as seen on diffusion tensor imaging

2012 ◽  
Vol 24 (9) ◽  
pp. 1483-1493 ◽  
Author(s):  
Senthil Thillainadesan ◽  
Wei Wen ◽  
Lin Zhuang ◽  
John Crawford ◽  
Nicole Kochan ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
White Matter ◽  
Multiple Testing ◽  
Diffusion Tensor ◽  
Internal Capsule ◽  
Anterior Cingulate ◽  
Corona Radiata ◽  
Amnestic Mci ◽  
Subcortical Regions ◽  
The Right

ABSTRACTBackground: Previous studies using diffusion tensor imaging (DTI) have observed microstructural abnormalities in white matter regions in both Alzheimer's disease and mild cognitive impairment (MCI). The aim of this work was to examine the abnormalities in white matter and subcortical regions of MCI and its subtypes in a large, community-dwelling older aged cohortMethods: A community-based sample of 396 individuals without dementia underwent medical assessment, neuropsychiatric testing, and neuroimaging. Of these, 158 subjects were classified as MCI and 238 as cognitively normal (controls) based on international MCI consensus criteria. Regional fractional anisotropy (FA) and mean diffusivity (MD) measures were calculated from the DTI and compared between groups. The false discovery rate correction was applied for multiple testing.Results: Subjects with MCI did not have significant differences in FA compared with controls after correction for multiple testing, but had increased MD in the right putamen, right anterior limb of the internal capsule, genu and splenium of the corpus callosum, right posterior cingulate gyrus, left superior frontal gyrus, and right and left corona radiata. When compared with controls, changes in left anterior cingulate, left superior frontal gyrus, and right corona radiata were associated with amnestic MCI (aMCI), whereas changes in the right putamen, right anterior limb of the internal capsule, and the right corona radiata were associated with non-amnestic MCI (naMCI). On logistic regression, the FA values in the left superior gyrus and MD values in the anterior cingulate distinguished aMCI from naMCI.Conclusions: MCI is associated with changes in white matter and subcortical regions as seen on DTI. Changes in some anterior brain regions distinguish aMCI from naMCI.

Human oocyte vitrification with corona radiata, in autologous follicular fluid supplemented with ethylene glycol, preserves conventional IVF potential: birth of four healthy babies

2014 ◽  
Vol 26 (7) ◽  
pp. 1001 ◽  
Author(s):  
Xian-Hong Tong ◽  
Li-Min Wu ◽  
Ren-Tao Jin ◽  
Hong-Bing Luan ◽  
Yu-Sheng Liu
Keyword(s):  
Ethylene Glycol ◽  
Embryo Transfer ◽  
Follicular Fluid ◽  
Control Group ◽  
Human Oocyte ◽  
Oocyte Vitrification ◽  
Human Oocytes ◽  
Corona Radiata ◽  
Fertilisation Rate ◽  
Significant Difference

The aim of this study was to examine the effects of vitrification with autologous follicular fluid (AFF) supplemented with ethylene glycol (EG) and sucrose on human oocytes with corona radiata. A total of 182 human oocytes with corona radiata from fifteen infertile patients were vitrified using either equilibration solutions (ES) and vitrification solution (VS) consisting of AFF, EG and sucrose (AFF group, n = 67) or commercial ES and VS (control group, n = 115). All oocytes were thawed in the next cycle, with surviving oocytes being inseminated by conventional IVF. The clinical outcome of vitrified–warmed oocytes by both vitrification methods was analysed retrospectively. In the AFF group, six patients received embryo transfer, with three couples taking four healthy babies home. In the control group, nine patients received embryo transfer, with four couples taking five healthy babies home. There was no significant difference in the survival rate (91.0 vs 92.2%), two pronuclei (2PN) fertilisation rate (73.8 vs 73.6%), cleavage rate (100 vs 100%), top-quality embryo rate (62.2 vs 59.2%), clinical pregnancy rate (50.0 vs 44.4%), implantation rate (33.3 vs 25%) or take-home baby rate (50.0 vs 44.4%) between the AFF group and the control group, respectively. These results show that AFF supplemented with EG and sucrose is an efficient, cost-effective cryoprotectant for human oocyte cryopreservation. A corona radiata on vitrified–warmed oocytes retains the oocytes’ fertilisation capability in conventional IVF.

scholarly journals Characteristics of Brain Structure in HIV Male Patients with Syphilis Co-Infection: A Cross-Sectional Study.

2021 ◽  
Author(s):  
Yu Qi ◽  
Yuan-Yuan Wang ◽  
Wei Wang ◽  
Xu-Ze Liu ◽  
Jing Liu ◽  
...  
Keyword(s):  
Corpus Callosum ◽  
Diffusion Tensor ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Infected Male ◽  
Syphilis Infection ◽  
Cross Sectional ◽  
Corona Radiata ◽  
Male Patients ◽  
The Right

Abstract Background To investigate the effect of syphilis infection on the microstructure of white matter (WM) in HIV-infected male patients through comparing the differences of WM between HIV-infected male patients with and without syphilitic infection using diffusion tensor imaging (DTI).Methods 27 HIV-infected male patients with current syphilis or a history of syphilis (HIV+/syphilis+) and 29 HIV-infected male patients without syphilis co-infection history (HIV+/syphilis-) were enrolled. All patients received DTI and comprehensive neuropsychological assessment. Clinical data were compared between the two groups with T-test, Mann-Whitney U Test and Chi-square Test. Tract-based spatial statistics (TBSS) was adopted to analyze the DTI metrics. Multiple linear regression analysis was conducted to investigate the relationships between DTI metrics and clinical variables and cognitive performance. Results In the HIV+/syphilis+ group, decreased AD was found in the right superior corona radiata (SCR-R) and body of corpus callosum (BCC); increased RD was found in the bilateral posterior corona radiata (PCR), the right posterior thalamic radiation (PTR-R), the left SCR (SCR-L), splenium of corpus callosum (SCC) and BCC; decreased FA was found in multiple regions. AD in BCC was negatively correlated with CD4/CD8 ratios. AD in SCR-R was positively correlated with CD4/CD8 ratios. Patients in HIV+/syphilis+ group had a lower score in complex motor skills (CMS). RD in SCC and SCR-L was negatively correlated with CMS; RD in PTR-R was positively correlated with CMS. AD in SCR-R was positively correlated with CMS. Conclusions Compared with patients simply infected with HIV, the integrity of WM is more seriously impaired in HIV-infected patients with syphilis co-infection, and it may accelerate the impairment of cognitive function.

scholarly journals Childhood adversity associated with white matter alteration in the corpus callosum, corona radiata, and uncinate fasciculus of psychiatrically healthy adults

2017 ◽  
Vol 12 (2) ◽  
pp. 449-458 ◽  
Author(s):  
Simon McCarthy-Jones ◽  
◽  
Lena K. L. Oestreich ◽  
Amanda E. Lyall ◽  
Zora Kikinis ◽  
...  
Keyword(s):  
White Matter ◽  
Corpus Callosum ◽  
Childhood Adversity ◽  
Healthy Adults ◽  
Uncinate Fasciculus ◽  
Corona Radiata

Rehabilitation Course and Specification of Dysmetria of a Patient With Ataxia, Dysmetria, and Hemiparesis After a Stroke in the Corona Radiata: A Case Presentation

PM&R ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 974-978
Author(s):  
Monir Mohar ◽  
Kosandra Hartman ◽  
Bronwyn Long ◽  
Peter Lee ◽  
Adrian Didita ◽  
...  
Keyword(s):  
Case Presentation ◽  
Corona Radiata

scholarly journals Foix-Chavany-Marie Syndrome due to Unilateral Anterior Opercular Damage with Contralateral Infarction of Corona Radiata

2019 ◽  
Vol 11 (3) ◽  
pp. 319-324 ◽  
Author(s):  
Fumihito Yoshii ◽  
Hiromi Sugiyama ◽  
Kazuyuki Kodama ◽  
Takahito Irino
Keyword(s):  
Diffusion Tensor ◽  
Underlying Mechanism ◽  
Masticatory Muscles ◽  
Pseudobulbar Palsy ◽  
Rare Type ◽  
Corona Radiata ◽  
Lesion Topography ◽  
The Face ◽  
Tract Involvement ◽  
And Diffusion

Foix-Chavany-Marie syndrome (FCMS) is a rare type of pseudobulbar palsy characterized by automatic-voluntary dissociation of movements of the face, tongue, pharynx, and masticatory muscles. Most cases are due to bilateral ischemic lesions of the anterior operculum, but the syndrome has also been described after unilateral opercular damage, either isolated or associated with contralateral cortico-nuclear tract involvement. We report a patient with FCMS due to right anterior opercular lesion with contralateral infarction of the corona radiata. The patient presented with paralysis of the face and tongue with automatic and voluntary dissociation. To our knowledge, FCMS with this peculiar lesion topography has rarely been reported. We discuss the underlying mechanism with reference to MRI and diffusion tensor imaging.

Sign in / Sign up

Export Citation Format

Share Document