Dental Porcelain ; Dental Prosthesis ; Dental Restoration, Permanent ; methods ; Humans

As a kind of additive in feed of monogastric animals, the application of natural phytase is limited due to its disadvantages. In this paper, the strategies of phytse reform was introduced. Furthermore, the research and progress on protein engineering of feed phytase was reviewed, including phytase over-expression, phytase thermostability, catalytic efficiency and optimum pH.

Abstract: Objective　To explore the clinical characteristics of nucleic acid negative newborns delivered by pregnant women infected with SARS-CoV-2 (Omicron variant BA. 5.1.3) in Sanya area, and to provide evidence for understanding its clinical characteristics. Methods　A retrospective analysis was performed on 14 neonates with negative nucleic acid delivered by pregnant women who tested positive for SARS-CoV-2 (Omicron variant BA.5.1.3) in Sanya Central Hospital (the Third People's Hospital of Hainan Province) from June 2022 to September 2022 (observation group, n=14). The corresponding nucleic acid-negative newborns delivered by pregnant women detected negative with SARS-CoV-2 (Omicronon variant strain BA.5.1.3) were set as the control group (n=56), and the general data and clinical characteristics of neonates in the two groups were compared. Results　There was no significant difference between the observation group and the control group in pregnancy diabetes, pregnancy induced hypertension, gestational pre-eclampsia, fetal intrauterine distress, premature rupture of membranes (P>0.05); there was no significant difference between the observation group and the control group in terms of sex, gestational age, birth weight, age, mode of delivery, birth Apgar score, heart screening, pulmonary disease, glucose 6-phosphate dehydrogenase (G6PD) deficiency, thalassemia, breast milk jaundice, hemolytic jaundice (P>0.05). The bilirubin level, blue light irradiation cases and the duration of blue light irradiation of the newborns in the observation group at 7 days after birth were higher than those in the control group (P<0.05); the ratio of blood oxygen saturation ≥ 90% in the observation group was lower than that in the control group (21.43% vs 89.29%, P<0.05), and the ratio of blood oxygen saturation occasionally<90% was higher than that in the control group (57.14% vs 10.71%, P<0.05). The ratio of blood oxygen saturation<90% had no significant difference compared with that in the control group (7.14% vs 0, P>0.05), and the ratio of blood oxygen saturation reduced to the required oxygen uptake was higher than that in the control group (14.29% vs 0, P<0.05). Conclusions　The jaundice manifestation of the nucleic acid-negative newborns delivered by pregnant women infected with SARS-CoV-2 (Omicronon variant strain BA.5.1.3) in Sanya area is relatively obvious, with blood oxygen saturation easily lower than 90% and even requiring oxygen inhalation in severe cases.

By non-steady method,the effective diffusivity of ferrous sulphate within alginate calcium gel entrapped without bacteria was measured.Meanwhile the oxidation ability of entrapped bacteria was analyzed.Experimental results showed that the effective diffusion coefficient of ferrous sulphate decreased with the increase of alginate concentration,the optimum alginate concentration is 2%(W/V).The effect of calcium chloride on the effective diffusivity was neglectable.The incubation of ferrooxidans would pass through 10 hours,and the diffusion coefficient within gel entrapped Thiobacillus ferrooxidans cells was less remarkably than that of ferrous sulphate without entrapped cells.For the entrapped cells,the absolute oxidation time was shortest and the rate change was fastest with the initial Fe concentration 5g/L.The absolute oxidation time was same when the initial Fe concentration was 8g/L and 10g/L.

Objective To investigate the effect of intravenous fluid infusion combined with water throuth gastrointestinal tract in treating the patients with hyperosmolar hyperglycemic state(HHS).Methods 30 HHS pa- tients were recruited.All the patients were given water throuth gastrointestinal infusion while they were administrat- ed continuously intravenous infusion.Laboratory parameters such as serum natrium,serum potasium,serum glucose and serum osmolarity ect were monitored at the admission and after treatment.Results Serum glucose and serum osmolarity of HHS patients were decreased smoothly at the speed of less than 3 mmol?L~(-1).h~(-1)during the first 12 hours after treatment.After 48 hour-treatment,serum natrium,serum potassium and serum osmolarity recovered to normal levels except 2 deaths,serum glucose decreased to(10.8?5.2)mmol/L.Conclusion Intravenous fluid infu- sion combined with water throuth gastrointestinal tract for the patients could lower smoothly serum glucose and serum osmolarity and decrease the mortality of the HHS patients.

Abstract: Objective　To understand the clinical manifestations, symptoms, treatment and recovery of neonates infected with Omicron variant (BA.5.1.3) of SARS-CoV-2, and provide a certain reference for subsequent diagnosis and treatment of related diseases. Methods　The clinical manifestations, epidemiology, auxiliary examinations, and treatment processes of the neonate aged 4-day-old who was community-acquired infection of variant BA.5.1.3 in Sanya was retrospectively analyzed. Results　The neonate's mother was identified as a close contact with patients with coronavirus disease 2019 (COVID-19) one hour before delivery, and tested positive for nucleic acid within 24 hours after delivery. But her breast milk, amniotic fluid, placenta, and umbilical cord were not detected for nucleic acid test after delivery. The nucleic acid test of the neonate was negative within 24 hours after birth. Then he was transferred to the hotel for isolation. Before the transfer, the mother and baby stayed in the same room and ate breast milk but the mother did not wear any mask. The neonate didn't have nucleic acid test on the second and third days of his life, and the nucleic acid test of the neonate was positive on the fourth day, negative on the fifth day, and positive on the sixth day. Then he was transferred to the designated hospital of COVID-19 for treatment. The neonate had no cough, no fever, yellow skin, abdominal distension, general breast feeding, and good reaction. On admission, the laboratory examination showed that blood routine examination and electrolyte were normal, and the myocardial enzyme and liver and kidney functions were normal. The bilirubin was significantly increased (449.3 μmol/L). The nucleic acid test of the neonate was positive and his chest imaging results were normal. The treatment measures were mainly isolation, feeding, blue light fading, close monitoring of vital signs, and antiviral drugs were administered. Jaundice subsided and abdominal distension was relieved after 6 d of treatment, and the treatment process was smooth without complications. Conclusions　The results suggest that the neonates are susceptible to Omicron variant BA.5.1.3 and prone to aggregation. The evidence of vertical transmission is insufficient and the clinical symptoms of neonates infected with Omicron variant BA.5.1.3 are mid, with no involvement of organ damage of the heart, liver, kidney, brain, and other organs.

Coronary artery disease (CAD) is one of the leading causes of death. Safflower attracts great attention owing to its anti-ischemia/reperfusion injury effect. Ninety-three patients with CAD were included and randomized into safflower treatment group, PCI group and control group. Low-dose dobutamine stress echocardiography (DSE) was performed to measure end-systolic volume (ESV), end-diastolic volume (EDV), left ventricular ejection fraction (LVEF) and wall motion score index (WMSI) to determine the recovery of hibernating myocardium and cardiac function in all patients before treatment and after 3-month follow-up. The study was to investigate the effects of safflower on hibernating myocardial revascularization and cardiac function. It was found that LVEF was significantly improved, while the ESV and WMSI were significantly reduced after 2-week treatment in safflower and PCI treatment groups. No significant differences were found between safflower and PCI treatment groups in ESV, EDV, WMSI and LVEF after treatment Safflower injection effectively improved hibernating myocardial function.
Aged ; Carthamus tinctorius ; chemistry ; Coronary Artery Disease ; drug therapy ; physiopathology ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Heart ; drug effects ; physiopathology ; Humans ; Male ; Middle Aged ; Myocardial Revascularization ; Myocardial Stunning ; drug therapy ; physiopathology ; surgery ; Recovery of Function

Objective Previous studies indicated that activation of Toll-like receptor4 (TLR4) was involved in the progression and instability of atherosclerotic plaque.Anti-inflammatory effects were shown in statins. However,the mechanisms underlying these effects have not been well explored.We test the hypothesis that a por- tion of these anti-inflammatory effects are mediated by regulation of TLR4 expression.Methods One hundred twenty-one subjects (22 normal persons,17 patients with stable angina and 82 patients with ACS) were recruited. 41 patients with ACS were randomized to atorvastatin 10 mg/d or atorvastatin 40 mg/d on top of routine anti-anginal treatment.Serum level of hsCRP,blood lipids,TLR4 expression on CD_(14)~+ monocytes were measuered before and after one month treatment.TLR4 expression on CD_(14)~+ monocytes were quantified via flow-cytometry.Results hsCRP and TLR4 expression on CD_(14)~+ monocytes in patients with ACS were higher than patients with stable angina and normal persons(hsCRP,ACS:11.1?14.3 vs stable angina:2.5?2.7 mg/L vs normal:2.3?4.2 mg/L,P

OBJECTIVETo investigate the clinicopathological characteristics and surgical treatment of duodenal gastrointestinal stromal tumor (GIST).

METHODSClinicopathological data of 25 cases with duodenal GIST from January 2007 to July 2011 in West China hospital were retrospectively analyzed.

RESULTSAll the patients were identified by pathological examination without specific symptoms. Tumors were located in the bulb area in 2 cases, descending portion in 11 cases, transverse portion in 8 cases, and ascending portion in 4 cases. Two cases were at very low risk, 7 at low risk, 6 at intermediate risk, and 10 at high risk. All the patients received surgical resection, including 11 pancreaticoduodenectomies, 10 local tumor resections, 2 duodenal segmental resections, and 2 distal subtotal gastrectomies. Eighteen patients were followed up from 16 to 39 months and 3 patients recurred 18, 30, and 35 months after operation respectively.

CONCLUSIONSDuodenal GIST exhibits no distinct clinical characteristics. Complete removal of the tumor is the main choice of treatment.

Adult ; Aged ; Duodenal Neoplasms ; pathology ; surgery ; Female ; Follow-Up Studies ; Gastrointestinal Stromal Tumors ; pathology ; surgery ; Humans ; Male ; Middle Aged ; Retrospective Studies

OBJECTIVETo explore the possibility of pulsed Nd:YAG laser-aided debonding for removing orthodontic metal brackets and to compare the method with the conventional mechanical debonding method.

METHODSFifty healthy premolars extracted for orthodontic purpose were randomly divided into five groups (10 teeth in each group). There were four experimental groups and one control group. Every tooth was bonded with bracket. Laser was used to irradiate the teeth in experimental groups with different electric currents (13.0, 13.5, 14.0, 14.5 A). During the irradiation, the brackets received 4.9 N of force until the brackets off. The time needed for debonding and the temperature change of the pulp cavity were recorded. The teeth in control group were debonded using mechanical method. The adhesive remnant index (ARI) was calculated using stereomicroscope and imagetool software. All samples were examined with a scanning electron microscope.

RESULTSThe time taken between the four groups were (67.70 ± 7.18), (35.90 ± 4.28), (24.90 ± 3.76), (6.90 ± 2.33) s, highly statistical difference was found in the time needed for debonding (P < 0.01). The temperature in the pulp cavity among the four groups were (20.97 ± 3.10), (12.75 ± 3.14), (8.99 ± 2.47), (2.91 ± 1.88)°C, and statistical differences were found in temperature change of the pulp cavity (P < 0.05). ARI of three experimental groups and the control group were (8.55 ± 5.02)%, (15.42 ± 7.37)%, (5.55 ± 3.79)%, (13.72 ± 6.69)%, and (74.36 ± 29.44)%. The enamel surface of the control group was coarse with deep scratchs. The enamel surface was smooth and clean in the experimental groups.

CONCLUSIONSPulsed Nd:YAG laser-aided debonding for removing metal brackets was feasible. Laser-aided debonding was better than conventional mechanical debonding method. The method reduced the damage to the enamel surface.

Dental Debonding ; methods ; Dental Enamel ; Humans ; Lasers, Solid-State ; Orthodontic Brackets