|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Euglycemic diabetic ketoacidosis:A missed diagnosis显示文摘Euglycemic diabetic ketoacidosis(DKA)is an acute life-threatening metabolic emergency characterized by ketoacidosis and relatively lower blood glucose(less than 11 mmol/L).The absence of hyperglycemia is a conundrum for physicians in the emergency department and intensive care units;it may delay diagnosis and treatment causing worse outcomes.Euglycemic DKA is an uncommon diagnosis but can occur in patients with type 1 or type 2 diabetes mellitus.With the addition of sodium/glucose cotransporter-2 inhibitors in diabetes mellitus management,euglycemic DKA incidence has increased.The other causes of euglycemic DKA include pregnancy,fasting,bariatric surgery,gastroparesis,insulin pump failure,cocaine intoxication,chronic liver disease and glycogen storage disease.The pathophysiology of euglycemic DKA involves a relative or absolute carbohydrate deficit,milder degree of insulin deficiency or resistance and increased glucagon/insulin ratio.Euglycemic DKA is a diagnosis of exclusion and should be considered in the differential diagnosis of a sick patient with a history of diabetes mellitus despite lower blood glucose or absent urine ketones.The diagnostic workup includes arterial blood gas for metabolic acidosis,serum ketones and exclusion of other causes of high anion gap metabolic acidosis.Euglycemic DKA treatment is on the same principles as for DKA with correction of dehydration,electrolytes deficit and insulin replacement.The dextrosecontaining fluids should accompany intravenous insulin to correct metabolic acidosis,ketonemia and to avoid hypoglycemia. | Prashant Nasa Sandeep Chaudhary Pavan Kumar Shrivastava Aanchal Singh | 2021 | World Journal of Diabetes2021，12，5： | 11 |
| 2 | Neuroprotective effects of Alda-1 mitigate spinal cord injury in mice:involvement of Alda-1-induced ALDH2 activation-mediated suppression of reactive aldehyde mechanisms显示文摘Spinal cord injury(SCI)is associated with high production and excessive accumulation of pathological 4-hydroxy-trans-2-nonenal(4-HNE),a reactive aldehyde,formed by SCI-induced metabolic dysregulation of membrane lipids.Reactive aldehyde load causes redox alteration,neuroinflammation,neurodegeneration,pain-like behaviors,and locomotion deficits.Pharmacological scavenging of reactive aldehydes results in limited improved motor and sensory functions.In this study,we targeted the activity of mitochondrial enzyme aldehyde dehydrogenase 2(ALDH2)to detoxify 4-HNE for accelerated functional recovery and improved pain-like behavior in a male mouse model of contusion SCI.N-(1,3-benzodioxol-5-ylmethyl)-2,6-dichlorobenzamide(Alda-1),a selective activator of ALDH2,was used as a therapeutic tool to suppress the 4-HNE load.SCI was induced by an impactor at the T9–10 vertebral level.Injured animals were initially treated with Alda-1 at 2 hours after injury,followed by once-daily treatment with Alda-1 for 30 consecutive days.Locomotor function was evaluated by the Basso Mouse Scale,and pain-like behaviors were assessed by mechanical allodynia and thermal algesia.ALDH2 activity was measured by enzymatic assay.4-HNE protein adducts and enzyme/protein expression levels were determined by western blot analysis and histology/immunohistochemistry.SCI resulted in a sustained and prolonged overload of 4-HNE,which parallels with the decreased activity of ALDH2 and low functional recovery.Alda-1 treatment of SCI decreased 4-HNE load and enhanced the activity of ALDH2 in both the acute and the chronic phases of SCI.Furthermore,the treatment with Alda-1 reduced neuroinflammation,oxidative stress,and neuronal loss and increased adenosine 5′-triphosphate levels stimulated the neurorepair process and improved locomotor and sensory functions.Conclusively,the results provide evidence that enhancing the ALDH2 activity by Alda-1 treatment of SCI mice suppresses the 4-HNE load that attenuates neuroinflammation and neurodegeneration,promotes the neurorepair process,and improves functional outcomes.Consequently,we suggest that Alda-1 may have therapeutic potential for the treatment of human SCI.Animal procedures were approved by the Institutional Animal Care and Use Committee(IACUC)of MUSC(IACUC-2019-00864)on December 21,2019. | Mushfiquddin Khan Fei Qiao Pavan Kumar S.M.Touhidul Islam Avtar K.Singh Jeseong Won Inderjit Singh | 2022 | Neural Regeneration Research2022，17，1： | 3 |
| 3 | Metallurgical Behaviour and Carbon Diffusion in Buttering Deposits Prepared With and Without Buffer Layers显示文摘Use of a buttering deposit on ferritic steel in dissimilar metal weld(DMW) joint is a common practice in nuclear plants to connect pressure vessel components(ferritic steel) to pipelines(austenitic stainless steel).Carbon migration and metallurgical changes near fusion interface(ferritic steel–austenitic stainless steel) lead to a steeper gradient in material properties,and minimizing this gradient is the major challenge in the manufacturing of DMW joints.Inconel 82 is often deposited on ferritic steel material as buttering to reducing the gradient of physical and attaining material compatibility.Inconel 82/182 fillers are used to minimize the carbon migration,but the results are not truly adequate.In this paper,Ni–Fe alloy(chromium-free) has been used as the intermediate buffer layer in the weld buttering deposit to address the issue of carbon migration and subsequent metallurgical deterioration.The weld pads with and without buffer layers of Ni–Fe alloy have been investigated and compared in detail for metallurgical properties and carbon diffusivities.Ni–Fe buffer layer can significantly control the carbon migration which resists the metallurgical deterioration.It showed the better results in postweld heat treatment and thermally aged conditions.The buttering deposit with Ni–Fe buffer layer could be the better choice for DMW joints requirements. | Dinesh W.Rathod Sunil Pandey Sivanandam Aravindan Pavan Kumar Singh | 2017 | Acta Metallurgica Sinica(English Letters)2017，30，2： | 2 |
| 4 | Microstructure study and constitutive modeling of Ti–6Al–4V alloy at elevated temperatures显示文摘 | Nitin Kotkunde Hansoge Nitin Krishnamurthy Pavan Puranik Amit Kumar Gupta Swadesh Kumar Singh | 2014 | Materials and Design2014，，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员