ObjectiveTo evaluate the relationship between neural (re)organization of the somatosensory cortex and impairment of sensory function (2-point discrimination [2PD]) in individuals with unilateral cerebral palsy.MethodsWe included 21 individuals with unilateral cerebral palsy. 2PD thresholds were evaluated on thumb pads, and activation of the somatosensory cortex was recorded by functional MRI (fMRI) during passive movements of the affected hand. A lateralization index (LI) was calculated for the primary sensory (S1) and secondary sensory (S2) cortices and the correlation between the LI and 2PD thresholds was analysed.ResultsWe found a significant negative correlation between the 2PD thresholds and the S2 LI (r = −0.5, one-tailed P-value = 0.01) and a trend towards a negative correlation with the S1 LI (r = −0.4, one-tailed P-value = 0.05).ConclusionHigh levels of activation in the contralesional hemisphere were associated with high levels of sensory impairment in individuals with unilateral cerebral palsy. The interhemispheric (re)organization of the somatosensory system may not effectively compensate for somatosensory impairment. 相似文献
Apatinib, an oral small molecular receptor tyrosine kinase inhibitor (TKI) developed first in China, exerts antiangiogenic and antineoplastic function through selectively binding and inhibiting vascular endothelial growth
factor receptor 2 (VEGFR-2). In this study, we aimed to explore the efficacy and safety profile of apatinib
monotherapy, or combined with chemotherapy or endothelial growth factor receptor (EGFR)-TKI in heavily
pretreated non-small cell lung cancer (NSCLC) patients with brain metastases. We performed a retrospective
analysis for relapsed NSCLC patients with brain metastases from our institute, who received apatinib
(250 mg or 500 mg p.o. qd) monotherapy, or combination with EGFR-TKI or chemotherapy as second or
more line systemic therapy until disease progression or unacceptable toxicity occurred. The objective response
rate (ORR), disease control rate (DCR), median progression-free survival (mPFS), median overall survival
(mOS), and safety were analyzed. A total of 26 eligible patients were included: 24 patients diagnosed with
adenocarcinoma, 2 with squamous carcinoma, and 14 patients harboring EGFR sensitizing mutations. The
mPFS and mOS were 4.93 (range, 0.27−32.91; 95% CI 3.64−6.22) and 14.70 (range, 0.27−32.91; 95% CI
0.27−43.60) months for the whole group. The ORR and DCR were 7.7% (2/26) and 69.2% (18/26) for the
entire lesions, and 7.7% (2/26) and 79.6% (20/26) for brain metastases, respectively. Compared with patients
who received apatinib monotherapy, patients who received apatinib combination treatment had more favorable
mPFS (11.77 vs. 2.27 months, p<0.05) and mOS (24.03 vs. 6.07 months, p<0.05). Treatment-related toxicities
were tolerable including grade 1/2 hypertension, hand-and-foot syndrome, fatigue, nausea, liver dysfunction,
myelosuppression, skin rash, and palpitation. In conclusion, apatinib exhibited high activity and good tolerance
for NSCLC patients with brain metastasis, and it might become a potential choice for metastatic brain tumors
in NSCLC patients. 相似文献
1. The present study is designed to investigate the brain distribution and plasma pharmacokinetics profiles of chlorogenic acid (CGA) after intranasal administration in Charles–Foster rats to evaluate whether the CGA molecules are transported directly via the nose-to-brain path.
2. The CGA is administered intravenously (IV) and intranasally (IN) at the dose of 10?mg/kg. Further, its concentration in the plasma, cerebrospinal fluid (CSF) and the whole brain is analyzed by HPLC-UV method.
3. The study observes that CGA is rapidly absorbed in plasma with tmax of 1?min similar to IV route after IN administration. The peak plasma concentration and AUC0–24 are higher by 3.5 and 4.0 times respectively in IV administration, compared to IN delivery that represents the significant less systemic exposure of CGA in IN route.
4. However, the concentration of CGA in the brain is 4, 6.5, 5.3, 5.2 and 4.5 times higher at 30, 60, 120, 240 and 360?min, respectively in IN administration compared to IV administration. The exposure of CGA in the brain after IN administration (AUCbrain, IN) was significantly greater (4 times) as compared to the exposure of CGA in the brain (AUCbrain, IV) after IV administration reflecting significant brain uptake of CGA through nasal route. Therefore, IN delivery of CGA can be a promising approach for the treatment of stroke and neurodegenerative disorders. 相似文献