AIM To prepare the moisture-proof granules of polysaccharides from Astragali Radix.METHODS Mixture design was adopted in the optimization of excipient proportion after moisture absorption determination of mixed powder of polysaccharides and seven excipients.With the influencing factors of ethanol concentration,ethanol amount,drying temperature and drying time,together with the evaluation indices of moisture absorption rate and non-forming rate,the preparation was optimized by orthogonal test based on single factor test.The critical relative humidities were then compared after drawing moisture absorption curves of polysaccharides,mixed powder and granules.RESULTS The mixed powder with an optimal ratio (1 ∶ 2) of polysaccharides to mixed excipients (46.3％ lactose,14.5％ mannitol and 39.2％ microcrystalline cellulose) was found to remain the moisture absorption rate of 11.6％ within 168 h.The optimal conditions were determined to be 70％ for ethanol concentration,0.125 times for ethanol amount,55 ℃ for drying temperature,and 60 min for drying time,the moisture absorption rate was 8.1％ within 168 h,and the non-forming rate was 11.46％.Compared with polysaccharides and mixed powder,the granules showed relatively lower initial velocity and acceleration (absolute value) of moisture absorption,and relatively higher critical relative humidity.CONCLUSION The granules of polysaccharides from Astragali Radix prepared by this method show a good moisture-proof effect.

This review summarizes dietary characteristics of patients with psoriasis, discusses effects of gluten-free diet, Mediterranean diet and dietary intervention-induced weight loss on psoriasis, and analyzes the efficacy of dietary supplements in the treatment of psoriasis, such as fish oil, vitamin D, vitamin B12, selenium, and probiotics.

The clinical features,imaging data and prognosis of 2 patients with spinal cord infarction were summarized.Both patients presented with acute onset paraplegia and urinary retention.Spinal MRI showed high T2 signal and limited diffusion in the spinal cord.Patient 1 had spinal inflammatory changes and disc calcification and herniation at the T6 level.Cervical disc herniation was found in case 2 and the spinal lesions were all adjacent to the spinal infarct plane,but could not directly cause acute or chronic spinal cord compression.The clinical manifestations of two patients were acute stroke events.After the diagnosis of spinal cord infarction was confirmed,anti-platelet aggregation or anticoagulation and rehabilitation therapy were given,and the limb function of the patients gradually recovered to close to normal.The incidence of fibrocartilage embolism(FCE)associated with spinal disc disease is rare,and there is no consensus on treatment.This case provides experience and broadens thinking for the diagnosis,treatment and prognosis of spinal cord infarction.

Critical ultrasonography(CUS) is different from the traditional diagnostic ultrasound,the examiner and interpreter of the image are critical care medicine physicians.The core content of CUS is to evaluate the pathophysiological changes of organs and systems and etiology changes.With the idea of critical care medicine as the soul,it can integrate the above information and clinical information,bedside real-time diagnosis and titration treatment,and evaluate the therapeutic effect so as to improve the outcome.CUS is a traditional technique which is applied as a new application method.The consensus of experts on critical ultrasonography in China released in 2016 put forward consensus suggestions on the concept,implementation and application of CUS.It should be further emphasized that the accurate and objective assessment and implementation of CUS requires the standardization of ultrasound image acquisition and the need to establish a CUS procedure.At the same time,the standardized training for CUS accepted by critical care medicine physicians requires the application of technical specifications,and the establishment of technical specifications is the basis for the quality control and continuous improvement of CUS.Chinese Critical Ultrasound Study Group and Critical Hemodynamic Therapy Collabration Group,based on the rich experience of clinical practice in critical care and research,combined with the essence of CUS,to learn the traditional ultrasonic essence,established the clinical application technical specifications of CUS,including in five parts:basic view and relevant indicators to obtain in CUS;basic norms for viscera organ assessment and special assessment;standardized processes and systematic inspection programs;examples of CUS applications;CUS training and the application of qualification certification.The establishment of applied technology standard is helpful for standardized training and clinical correct implementation.It is helpful for clinical evaluation and correct guidance treatment,and is also helpful for quality control and continuous improvement of CUS application.