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91.
《Seminars in Pediatric Surgery》2018,27(1):57-64
Stem cell therapy is a promising treatment modality for necrotizing enterocolitis. Among the many promising stem cells identified to date, it is likely that mesenchymal stem cells will be the most useful and practical cell-based therapies for this condition. Using acellular components such as exosomes or other paracrine mediators are promising as well. Multiple mechanisms are likely at play in the positive effects provided by these cells, and further research is underway to further elucidate these effects. 相似文献
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ObjectiveThis study aimed to evaluate ocular vascularity in young adult migraine patients with visual aura and without visual aura.Material and MethodsThe study included 30 patients with migraine with visual aura (MWVA), 30 patients with migraine without visual aura (MWOVA), and 30 healthy control subjects, all between ages ≥18 and <45. Migraine patients were applied Headache Impact Test (HIT) and Migraine Disability Assessment Scale (MIDAS). Retinal nerve fiber layer thickness and ocular vascularity of all participants were evaluated with optical coherence tomography (OCT) and OCT angiography (OCTA).ResultsThe MWVA group had significantly lower superficial and deep foveal vascular density values compared to the control group (p = 0.039, p = 0.028, respectively). The foveal avascular zone was significantly enlarged in the MWVA group compared to the control group (p = 0.033). MWVA patients had significantly lower whole optic disc, optic disc inside, peripapillary, superior hemisphere, inferior hemisphere, superior quadrant, and temporal quadrant vascular density values compared to the control group (p < 0.05 all), while there was no significant difference in the nasal quadrant (p = 0.083). Migraine attack frequency, MIDAS, and HIT were negatively correlated with ocular vascular density values.ConclusionThe results of our study indicate that young adult patients with MWVA are at risk of decreased ocular vascularity and that this risk may increase with frequency and severity of migraine attacks. 相似文献
93.
目的 研究经皮冠状动脉PCI治疗术后缺血修饰蛋白标志物的变化及意义.方法 选择接受急诊经皮冠状动脉支架术治疗的急性心肌梗死患者,按治疗后30 minMA水平分为MA升高组和MA正常组,检测治疗前后外周血TnT、CK-MB水平.结果 治疗后30 min,MA水平(0.37±0.06) ABSU、较治疗前明显升高(P<0.05),cTnT、CK-MB水平无明显变化;治疗后6h和24 h cTnT、CK-MB水平明显升高,并且MA升高组上述心肌损伤指标明显升高,而MA正常组无明显改变.结论 缺血修饰白蛋白水平在PCI治疗后30 min内就会发生改变,是预测PCI治疗后心肌损伤的敏感指标. 相似文献
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膜相关性鸟苷酸激酶(membrane associated guanylate kinase,MAGUK)是一类突触后致密蛋白(postsynaptic density,PSD),定位于突触后膜的突触后致密区,包括PSD-95、SAP-102、PSD-93和SAP-97.MAGUK家族成员含有多个蛋白结合位点,这些特殊的结合位点负责介导多种信号的转导.MAGUK参与中枢神经系统疾病发生和发展机制,已成为神经科学研究的热点.文章简要综述了MAGUK在缺血性脑损伤中的作用. 相似文献
99.
Tracy J. Cheun Lalithapriya Jayakumar Maureen K. Sheehan Matthew J. Sideman Lori L. Pounds Mark G. Davies 《Journal of vascular surgery》2019,69(1):120-128.e2
Background
Critical hand ischemia owing to below-the-elbow atherosclerotic occlusive disease is relatively uncommon. The aim of this study was to examine the outcomes in patients presenting with critical ischemia owing to below-the-elbow arterial atherosclerotic disease who underwent nonoperative and operative management.Methods
A database of patients undergoing operative and nonoperative management for symptomatic below-the-elbow atherosclerotic disease between 2006 and 2016 was retrospectively queried. Patients with critical ischemia (tissue loss and rest pain) were identified. Three management groups were identified: no revascularization (None), endovascular revascularization (Endo), and open revascularization by bypass (Bypass). Patients with acute embolism, active vasculitis, end-stage renal disease, ipsilateral dialysis access complications of steal, and ipsilateral trauma were excluded.Results
One hundred eight patients (56% male; average age, 59 years) presented with symptomatic below-the-elbow disease: 93% presented with digital ulceration and the remainder with rest pain. Eighty-one percent had diabetes and 41% had chronic renal insufficiency (not on dialysis). All underwent catheter-based angiography. Fifty-three patients (49%) had no intervention and subsequently were committed to wound care; 26 of these required no further intervention, 10 had an interval palmar sympathectomy, and 17 underwent either a phalanx or digital amputation. Thirty-four patients (31%) underwent an endovascular intervention with a median of 1.5 vessels (ulnar, radial, or interosseous arteries) intervened on. Technical success was achieved in 29 patients (85%). Of the five technical failures, two went on to bypass, one had a focal endarterectomy and patch angioplasty, and one was treated conservatively. Ten patients in the Endo group required either a phalanx or digital amputation. Twenty-one patients (19%) underwent a saphenous vein bypass (reversed or nonreserved) to the radial in 12 and the ulnar in 11 limbs. In follow-up, 11 patients underwent open or endovascular intervention to maintain patency of the bypass. There were nine phalanx or digital amputations in the Bypass group. No below-the-elbow or above-the-elbow amputations were performed within 30 days. The wound healing rate without amputation was 78% (85 of 108). The predictors of wound healing were technical success of the revascularization, intact palmar arch and presence of digital run-off. The presence of an incomplete arch and poor digital run-off were associated with a phalanx or digital amputation.Conclusions
Upper extremity interventions for critical ischemia are associated with a high rate of success. Major amputations are rare and the many can be treated nonoperatively. In appropriately selected patients, both endovascular and open interventions have a high rate of success. 相似文献100.
Marcos Aurélio Barboza de Oliveira Ant?nio Carlos Brandi Carlos Alberto dos Santos Paulo Henrique Husseni Botelho José Luís Lasso Cortez Gilberto Goissis Domingo Marcolino Braile 《Brazilian Journal Of Cardiovascular Surgery》2014,29(2):249-254
The calcium paradox was first mentioned in 1966 by Zimmerman et al. Thereafter gained
great interest from the scientific community due to the fact of the absence of
calcium ions in heart muscle cells produce damage similar to ischemia-reperfusion.
Although not all known mechanisms involved in cellular injury in the calcium paradox
intercellular connection maintained only by nexus seems to have a
key role in cellular fragmentation. The addition of small concentrations of calcium,
calcium channel blockers, and hyponatraemia hypothermia are important to prevent any
cellular damage during reperfusion solutions with physiological concentration of
calcium. 相似文献