Notes

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Serum UA and hs-CRP were identified to be potential predictors for post-stroke cognitive dysfunction, with higher serum UA levels correlated with better cognitive function and higher hs-CRP levels correlated with worse cognitive impairment.

Serum UA and hs-CRP are two predictors for cognitive impairment post cerebral infarction.
Serum UA and hs-CRP are two predictors for cognitive impairment post cerebral infarction.
Hyponatremia is a common electrolyte disorder in patients with stroke, which leads to various fatal complications. We performed a systematic review and meta-analysis to investigate the outcomes of acute stroke patients with hyponatremia.

We searched MEDLINE, EMBASE, and the Cochrane Library databases for relevant literature in English published up to March 2020. Two review authors independently screened and selected the studies by assessing the eligibility and validity based on the inclusion criteria. EIDD-2801 Mortality at 90 days was set as the primary end point, and in-hospital mortality and length of hospital stay were set as the secondary end points. We conducted the data synthesis and analyzed the outcomes by calculating the odds ratio (OR) and mean difference.

Of 835 studies, 15 studies met the inclusion criteria (n = 10,745). The prevalence rate of stroke patients with hyponatremia was 7.0-59.2%. They had significantly higher 90-day mortality (OR, 1.73; 95% confidence interval (CI), 1.24-2.42) and longer length of hospital stay (mean difference, 10.68 days; 95% CI, 7.14-14.22) than patients without hyponatremia. Patients with hyponatremia had a higher tendency of in-hospital mortality than those without hyponatremia (OR, 1.61; 95% CI, 0.97-2.69).

The development of hyponatremia in the clinical course of stroke is associated with higher short-term mortality and a longer hospital stay. Although the causal relationship is unclear, hyponatremia could be a significant predictor of poor outcomes after stroke.
The development of hyponatremia in the clinical course of stroke is associated with higher short-term mortality and a longer hospital stay. Although the causal relationship is unclear, hyponatremia could be a significant predictor of poor outcomes after stroke.
Scleroderma en coup de sabre (ECDS) and Parry-Romberg idiopathic hemifacial atrophy (IHA) may affect the eyes, oral cavity, teeth and possibly the brain.

Systematic follow-up study of ECDS/IHA-associated manifestations including ophthalmic and dental status.

Medical records of ECDS and IHA patients diagnosed in a 40-year period (1975-2015) were reviewed, and patients were re-examined.

Thirty-five patients were included. Twenty-two patients (63%) had ECDS and 4 patients (11%) IHA. In 9 cases (26%), ECDS and IHA were found in the same patient. The ipsilateral eye was affected in 9 patients (26%). Ipsilateral abnormalities of the teeth and the tongue were found in 13 (46%) out of 28 examined. Eleven (31%) had extrafacial scleroderma on the trunk or the extremities. Neurological findings were not verified as ECDS/IHA related.

ECDS and IHA are related and often overlap with concomitant affections of the connective tissues of the face on the ipsilateral side. Ocular and dental abnormalities are common andnormality of crest cells at the stage when they migrate from behind over the scalp or laterally to the face to mix up with mesenchymal tissues of the frontonasal, maxillary and mandibular processes. The study emphasizes that routine evaluation of ECDS and IHA should include ophthalmological and dental specialist examinations.
The risk of malignancy in resected gastrointestinal stromal tumors (GISTs) depends on tumor size, location, and mitotic index. Reportedly, the Ki67 index has a prognostic value in resected GISTs. We aimed to analyze the accuracy of endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) samples with reference to Ki67 index, using surgical specimens as the gold standard.

Fifty-five patients who underwent EUS-FNA followed by surgical resection for gastric GISTs were retrospectively analyzed. Patients' age and sex; tumors' size and location; mitotic index, cell type, cellularity, pleomorphism, presence of ulceration, hemorrhage, necrosis, mucosal or serosal invasion, growth pattern, and Ki67 index based on pathology were investigated.

Location in fundus, ulceration, hemorrhage, mucosal invasion, and Ki67 index in surgical specimens were significant in predicting high-risk groups (P < 0.05) on univariate analysis. resence of bleeding (P = 0.034) and the Ki67 index (P = 0.018) were the only independent significant factors in multivariate analysis. The optimal cutoff level of Ki67 was 5%, with 88.2% sensitivity and 52.8% specificity (P = 0.021). The mean Ki67 index was lower in EUS-FNA samples than in surgical specimens [2% (1-15) vs. 10% (1-70), P = 0.001]. The rank correlation coefficient value of Ki67 was 0.199 (P = 0.362) between EUS-FNA and surgical samples and showed no reliability for EUS-FNA samples.

The Ki67 index in resected specimens correlated with high-risk GISTs, although it had no additive value to the current criteria. The Ki67 index in EUS-guided FNA samples is not a reliable marker of proliferation in GISTs.
The Ki67 index in resected specimens correlated with high-risk GISTs, although it had no additive value to the current criteria. The Ki67 index in EUS-guided FNA samples is not a reliable marker of proliferation in GISTs.We investigated band alignment of non-polar and polar GaN/AlN heterojunction by using density functional theory (DFT) with the Heyd-Scuseria-Ernzerhof (HSE) hybrid functional. In the heterojunction model, AlN was considered as a substrate while strained GaN was grown on top. The deformation potential of GaN, were included to calculate the unstrained band offsets. For polar heterojunction, the artificial effects from an undesired interface was removed by using vacuum insertion and dipole correction. We found that the unstrained valence band offsets (VBOs) are 0.92 eV, 1.23 eV and 1.09 eV for non-polar, Ga-polar and Al-polar interfaces respectively. The variation of VBOs can be explained from the difference in both deformation and dipole potential at the interfaces. Moreover, the additional energy shift of polar VBO from non-polar VBO were extracted as 0.33 eV from considering the effect of spontaneous polarization.
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