Ischemic stroke is a type of cerebrovascular disease with high morbidity, high mortality and high disability, which brings a huge medical burden to the society. Long non-coding RNA (lncRNA) H19 is closely associated with the pathophysiological mechanisms such as oxidative stress, inflammation, apoptosis, autophagy, and neurogenesis after ischemic stroke. It has received widespread attention in recent years. This article reviews the pathophysiological mechanism of lncRNA H19 in ischemic stroke, in order to provide new ideas for the diagnosis and treatment of ischemic stroke.

The study aims to solve the instability problem of methylphenidate (MPH) in plasma, and establish a LC-MS/MS method for simultaneous determining of MPH in human plasma. The stabilities of MPH in different media were studied, and the degradation characteristics of MPH in these media were also investigated by HPLC and LC-MS/MS. To a 200 microL aliquot of freshly collected plasma sample, 10 microL 2% formic acid was added immediately to prevent the hydrolysis of MPH in human plasma samples. Chromatographic separation was performed on a Sapphire C18 column using the mobile phase of methanol - 5 mmol.L-1 ammonium acetate buffer solution containing 0.1% formic acid (46 : 54). MPH was quantified by tandem mass spectrometry operating in positive electrospray ionization mode with multiple reaction monitoring. The detection used the transitions of protonated molecules at m/z 234.2-->84.1 for MPH and m/z 260.3-->183.1 for propranolol (IS), separately. The intra- and inter-assay precisions were all below 5.0%. The accuracies were all in standard ranges. The linear calibration curve was obtained in the concentration range of 0.035-40 ng.mL-1. The methods fulfilled the demand. The method was used to determine the concentration of MPH in human plasma after a single dose of 36 mg MPH tablet to 6 healthy Chinese volunteers. The method is suitable for the precisely determination of MPH and for pharmacokinetic study of MPH in human plasma.

BACKGROUND:Tooth wear is the physiological change that accompanied by a person’s life, type and nature, maxil ary and mandibular occlusion status, physical status, and living environment may affect it.
OBJECTIVE:To review the occurrence and development of tooth wear, as wel as research on the morphology of wear surface.
METHODS:The PubMed database was searched by the first author for the articles from January 1952 to
December 2012. The articles on the generation of tooth wear facets, macroscopic and microscopic studies of occlusal wear facets, wear measurement method, relationship between tooth wear and oral diseases, and
application of tooth wear facets in forensic research were included. The key words were“tooth, wear, diet,
information, dentistry, anthropology”in English. A total of 59 articles were included according to the inclusion criteria for review.
RESUTLS AND CONCLUSION:With the development of wearing, some oral clinical symptoms may occur. Just as there are no same fingerprints in the world, the individual tooth wear facet is unique. Therefore, the research on occlusal wear facets has great significance for understanding the diet habits, cultural development, age and other information, as wel as for dentistry, anthropology and forensic science. The macroscopic and microscopic study of tooth wear surface can provide a large amount of individual information. The current studies on tooth wear facets cannot ful y exhibit al the implicated information, so the further studies are needed.

Objective The alm of this study was to determine the solubility and permeability of daldzin and daldzein and the interaction of these two components.Methods With the method inChinese Pharmacopoeia and in situ single-pass intestinal perfusion model we tested the solubility and permeability of daldzin, daldzein and their interaction.Results In pH 7.4 K-R buffer the solubility of daldzin was 6 times than daldzein and both the solubility of these two components were enhanced when they were determined together. In small intestine of rat, the permeability of daldzein was 3 times than daldzin. Daldzin could enhance the permeability of daldzein but the daldzein manifested an opposite trend.Conclusion When compared to daldzin, daldzein owned a lower solubility but a better permeability. When used together, both the solubility and permeability of daldzein would be enhanced. The solubility of daldzin could be enhanced slightly but its permeability would be reduced.

Objective To explore 64 row volumetric CT 3D reconstruction in the clinical application of severe craniocerebral injury.Methods 60 patients with craniocerebral injury in our hospital were retrospectively analyzed who accept craniocerebral 64 row volumetric CT 6 to 24 hours after injury. Results All cases got timely diagnosis and treatment, especially for the special parts of brain lesions, ventricle base of skull fractures and pool, and various angles show. Conclusion 64 row volumetric CT reconstruction for the diagnosis of craniocerebral injury shows important significance and may estimate the prognosis in diagnosis, guiding treatment and surgery, reducing misdiagnosis.

AIM:To observe the clinical value of digital nonmydriatic funds photography in screening diabetic retinopathy and early intervention of hospitalized diabetic patients.

METHODS: Totally 130 diabetic patients hospitalized in Department of Endocrinology of our hospital were selected from January 2015 to December 2016. All patients were underwent non-mydriatic digital fundus photography and fundus fluorescein angiography(FFA).

RESULTS: There were 82 eyes diagnosed as non-proliferative diabetic retinopathy(NPDR)and 28 eyes as proliferative diabetic retinopathy(PDR)by non-mydriatic digital fundus photography. There were 89 eyes diagnosed as NPDR and 29 eyes as PDR by FFA. Compared with the result of the gold standard, the Kappa value of non-mydriatic digital fundus photography was 0.87(>0.61), and the test was consistency. There was no significant difference between the two methods in the detection of diabetic retinopathy in different stages(P>0.05). The positive rate of diabetic retinopathy was significantly higher in patients with diabetes mellitus over 10a(P<0.05).

CONCLUSION: Digital fundus photography is an effective method for early detection of DR in hospitalized diabetic patients. It is of great significance to reduce the blindness rate of diabetic retinopathy.

Objective To investigate the effects of different immunosuppressive agents on mesangial cell proliferation through a mesangial cell injury model in vitro. Methods Mesangial cell line (HBZY-1) in period of proliferation was cultured in vitro with cytochalasin B for 2 h, then HBZY-1 cells were divided into 5 groups: blank (control) group, cyclosporine A (CsA) group, Tacrolimus (Tac) group, mycophelonate mofetil (MMF) group and rapamycin (RAPA) group. Subsequently,the number of HBZY-1 cells at different time points was measured by using the professional image analysis software after treatment for 6, 12 and 24 h, respectively. Results Damaged HBZY-1 cells recovered in all groups. At 6 h, the number of HBZY-1 cells in Tac group was significantly more than that in control group (P＜0.05), but the difference had no significance between the other treatment groups and control group (P＞0. 05). At 12 h, there was no significant difference in of the number of HBZY-1 cells among the all groups (P＞0. 05). At 24 h, there was no significant difference in the cell number between MMF and control groups (P＞0. 05). CsA, Tac and RAPA resulted in HBZY-1 cell proliferation, and the cell number in CsA and Tac groups was significantly more than that in the other groups (P＜0. 05). As compared with the control group, the cell number in RAPA group was significantly increased (P＜0. 05). Conclusion CsA, Tac, MMF and RAPA contribute to recovery of damaged HBZY-1 cells, but CsA and Tac result in over-proliferation of HBZY-1 cells. RAPA and MMF can prevent HBZY-1 cells against over-proliferation, and MMF scarcely results in HBZY-1 cell proliferation.

Objective: To explore the management effects of health knowledge-attitude-practice education on phosphorous control in peritoneal dialysis patients with hyperphosphatemia. Methods: A total of 64 peritoneal dialysis patients with hyperphosphatemia with long-term stable follow-up in the People’s Hospital of Quzhou from 2016 to 2018 were selected, and randomly divided into control and intervention groups. The groups received regular health education and health knowledge-attitude-practice education for 3 months, respectively. T-test and paired t-test were used to analyze the difference in the two groups, before and after intervention, in the score of knowledge-attitude-practice, serum phosphorus level, daily dietary phosphorous, and dosage of phosphate binder. Results: Before the health education intervention,there was no significant difference between the two groups’ questionnaire score of knowledge-attitude-practice of hyperphosphatemia, serum phosphorus, intact parathyroid hormone (iPTH), daily dietary phosphorous, dosage of phosphorus binder, and weekly urea clearance index in gender, age, and other general information. After 3 months of health education, the total score, knowledge, and behavior scores were higher in both groups than before intervention, and the scores of the intervention group were significantly higher than the control group. The scores increased by 16.64, 6.15, and 9.52 points respectively in the control group, and by 26.26, 11.67, and 13.56 points respectively in the intervention group. There was no significant difference in attitudes and beliefs between the groups before and after the intervention. After the intervention, the serum phosphorus level decreased, dosage of phosphate binder increased in both groups, the daily dietary phosphorous and iPTH decreased in the intervention group. These differences were statistically significant. The serum phosphorus level of the intervention group (1.86±0.42) mmol/L was lower than the control group (1.97±0.33) mmol/L, and the daily dietary phosphorous of the intervention group (831.22±187.85) mg/d was lower than the control group (928.23±192.81) mg/d. The difference in dosage of phosphate binder and iPTH of the groups was not statistically significant. Conclusions Health knowledge-attitude-practice education in peritoneal dialysis patients with hyperphosphatemia can improve their level of knowledge-attitude-practice, and promote the reduction of serum phosphorus.

Objective:To explore the effect of ADOPT mode nursing intervention on airway self-care ability in patients with total laryngectomy.Methods:50 patients who received total laryngectomy were randomly divided into control group (25 cases) and observation group (25 cases). The control group received routine nursing, while the observation group received ADOPT mode nursing intervention on the basis of routine nursing. The Exercise of Self-Care Agency Scale and self-made airway self-care knowledge questionnaire were used to evaluate the airway self-care ability and the incidence of airway related complications was also evaluated.Results:On discharge and 3 months after discharge, total scores about self-care knowledge of airway were 83.80 ± 5.06 and 89.40 ± 4.86 in the experimental group, which were significantly higher than those in the control group (68.75 ± 5.57, 72.50 ± 6.76), the differences were statistically significant ( t = -9.91, -10.09, both P<0.05). On discharge and 3 months after discharge, total scores in ESCA were 126.88 ± 9.77 and 133.60 ± 8.10 in the experimental group, which were significantly higher than those in the control group (113.29 ± 17.06 and 119.13 ± 15.30). The differences were significant ( t = -3.42, -4.12, both P<0.05). The incidence of airway complications was 41.67% (10/24) in the control group and 12.00%(3/25) in the observation group, which was statistically significant ( χ2 = 5.53, P<0.05). Conclusions:ADOPT mode nursing intervention can significantly improve the airway self-care ability of patients with total laryngectomy, reduce the incidence of airway complications, and is beneficial to patients′ physical and mental recovery.

Objective:To apply CBL combined with PBL based on SMART (specific, measurable, attainable, relevant and time-based) principle in nursing practice teaching in radiotherapy.Methods:A total of 100 nurses who performed nursing practice in the Department of Radiotherapy in Guangdong Provincial Hospital of Traditional Chinese Medicine from May 2016 to May 2020 were selected as the research objects. They were divided into a control group and a study group according to their admissions, with 50 people in each group. The study group used CBL combined with PBL teaching based on SMART principle, and the control group used traditional practice teaching. After the clinical practice, the two groups were assessed on theoretical and clinical practice skills, and the two groups' teaching satisfaction and teaching effects were evaluated through seminars and questionnaire surveys. SPSS 22.0 was used for t test and chi-square test. Results:The theoretical and clinical practice performance assessment scores of the practical nurses in the study group were higher than those in the control group, with statistically significant differences ( P<0.001). The teaching satisfaction rate of the practice nurses in the control group was 62.00% (31/50), and that of the practice nurses in the study group was 96.00% (48/50), with significant differences ( P<0.001). In terms of improving independent learning ability, information acquisition and problem analysis ability, improving clinical thinking ability, mobilizing learning enthusiasm, enhancing teamwork ability, nurse-patient communication ability, and recognition of innovation ability, the teaching satisfaction of the research group was higher than that of the control group. Conclusion:The application of SMART principle in teaching has the advantages of clear goals and quantifiable evaluation. The combination of CBL and PBL based on SMART principle can help to improve the mastery of theoretical and practical skills of radiotherapy practice nurses, and achieve satisfactory teaching results.