Objective To explore the clinical features of critical cases of coronavirus disease 2019 (COVID-19). Methods The clinical data of nine patients who were diagnosed with critical COVID-19 in Hainan General Hospital from January 21, 2020 to February 6, 2020 were retrospectively analyzed. RT-PCR testing for 2019 novel coronavirus (2019-nCoV) was performed with multi-sites synchronize specimens including pharyngeal swab, blood, excrement, and urine. The serum levels of leucocyte, C-reactive protein, procalcitonin and lactic acid between the improved group (five cases) and the deteriorated group (four cases) were compared. The t test was used for comparison of normally distributed continuous data between groups. Results There were eight males (88.9%) and 1 female enrolled. The patients aged 28-77 years old, with an age of (52.9±18.0) years. By March 4, 2020, all five cases in improved group were cured and discharged, three cases in deteriorated group died and 1case remained in critical condition. All multi-sites specimens of patients in improved group turned negative in 2-4 weeks of illness onset, while those of cases in deteriorated group showed sustained viral nucleic acid positive (up to 48th day of illness onset). The white blood cell counts ((13.52±8.24)×10 9 /L vs (10.49±4.46) ×10 9 /L), C-reactive protein ((139.71±87.46) mg/L vs (78.60±55.40) mg/L) and procalcitonin ((2.32±4.03) ng/mL vs (0.28±0.58) ng/mL) , lactic acid ((3.70±4.14) mmol/L vs (2.33±0.53) mmol/L) in deteriorated group were all significantly higher than those in improved group ( t =2.908, 5.009, 4.391 and 2.942, respectively, all P <0.01). A rapid rise of serum IL-6 level up to 8 500 pg/mL was observed in one patient three days prior to death. Conclusion Among the patients with critical COVID-19, serum levels of inflammatory cytokines of the death cases are higher than those of improved and discharged cases.

Objective: To explore the association of TBX5 polymorphisms and environmental exposure index with susceptibility to oral cancer. Methods: A case-control study was conducted to collect 300 oral cancer patients hospitalized in the Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Fujian Medical University from September 2010 to December 2016. A total of 445 non-tumor patients were selected as the control group. Questionnaires were used to collect the information of all subjects and 5 ml peripheral blood was collected to detect single nucleotide polymorphisms (SNPs) of the rs10492336 locus of TBX5 gene. According to the environmental exposure index score, subjects were divided into two groups, low risk group (0-2.31) and high risk group (2.32-11.76). To analyze the association of TBX5 gene rs10492336 SNPs, environmental exposure index and oral cancer and its interactions. Results: The age of all subjects in the case group and control group were (56.19±13.10) years and (54.56±12.48) years old. Compared with CC genotype, the OR (95%CI) values of the co-dominant genetic model AC genotype and the dominant genetic model AC+AA genotype were 0.69 (0.49-0.98) and 0.70 (0.51-0.97), respectively. Compared with the low risk group, the OR (95%CI) risk of oral cancer in the high risk group was 3.72 (2.55-5.43). The results of gene-environment interaction analysis showed that compared with the group with CC genotype and high risk of environmental exposure index, the OR (95%CI) value of oral cancer in the group with AC+AA genotype and low risk of environmental exposure index was 0.18(0.10-0.31). Furthermore there was a multiplicative interaction between rs10492336 SNPs and environmental exposure index (β=-0.405, P<0.001). Conclusion This study suggests that the TBX5 gene rs10492336 SNPs and environmental exposure index were associated with oral cancer. And there was a multiplication interaction between rs10492336 SNPs and environmental exposure index.

Steroid associated-osteonecrosis (SAON) is non-trauma induced osteonecrosis, which is induced by long-term or high dose of corticosteroid indicated for inflammatory or immune diseases, etc. Subchondral collapse at late stage of SAON usually needs to be treated with joint replacement, while the costs and the prognosis of the surgery are challenge. It is important to perform the fundamental researches on the hip preservation treatments of SAON at early stage, and it is necessary to establish suitable animal models for studying the mechanisms of SAON and evaluating the potential treatments for the SAON. Rabbit SAON model is the most frequently used animal model. It is extensively used in studies on etiology and pathology of SAON. Furthermore, it is possible to evaluate potential drugs for preventing SAON and improving osteogenic repair of mid-stage SAON to prevent joint collapse. Because of bi-pedal, emu has the similar mechanical properties with human. Thus, it can be a suitable animal model for studying preventions and treatments of subchondral collapse of SAON, such as core-decompression with biodegradable materials for bone regeneration. In conclusion, this review updates the current animal SAON models with similar pathology to clinical SAON. These typical models could be used as clinical references for investigating drugs in prevention of early-stage of SAON and biomaterials in hip-preservation surgery for mid-stage of SAON.

Objective To explore the association of TBX 5 polymorphisms and environmental exposure index with susceptibility to oral cancer. Methods A case?control study was conducted to collect 300 oral cancer patients hospitalized in the Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Fujian Medical University from September 2010 to December 2016. A total of 445 non?tumor patients were selected as the control group. Questionnaires were used to collect the information of all subjects and 5 ml peripheral blood was collected to detect single nucleotide polymorphisms (SNPs) of the rs10492336 locus of TBX5 gene. According to the environmental exposure index score, subjects were divided into two groups, low risk group (0-2.31) and high risk group (2.32-11.76). To analyze the association of TBX5 gene rs10492336 SNPs, environmental exposure index and oral cancer and its interactions. Results The age of all subjects in the case group and control group were (56.19±13.10) years and (54.56± 12.48) years old. Compared with CC genotype, the OR (95%CI) values of the co?dominant genetic model AC genotype and the dominant genetic model AC+AA genotype were 0.69 (0.49-0.98) and 0.70 (0.51-0.97), respectively. Compared with the low risk group, the OR (95%CI) risk of oral cancer in the high risk group was 3.72 (2.55-5.43). The results of gene?environment interaction analysis showed that compared with the group with CC genotype and high risk of environmental exposure index, the OR (95%CI) value of oral cancer in the group with AC+AA genotype and low risk of environmental exposure index was 0.18(0.10-0.31). Furthermore there was a multiplicative interaction between rs10492336 SNPs and environmental exposure index (β=-0.405, P<0.001). Conclusion This study suggests that the TBX 5 gene rs10492336 SNPs and environmental exposure index were associated with oral cancer. And there was a multiplication interaction between rs10492336 SNPs and environmental exposure index.

Objective To explore the association of TBX 5 polymorphisms and environmental exposure index with susceptibility to oral cancer. Methods A case?control study was conducted to collect 300 oral cancer patients hospitalized in the Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Fujian Medical University from September 2010 to December 2016. A total of 445 non?tumor patients were selected as the control group. Questionnaires were used to collect the information of all subjects and 5 ml peripheral blood was collected to detect single nucleotide polymorphisms (SNPs) of the rs10492336 locus of TBX5 gene. According to the environmental exposure index score, subjects were divided into two groups, low risk group (0-2.31) and high risk group (2.32-11.76). To analyze the association of TBX5 gene rs10492336 SNPs, environmental exposure index and oral cancer and its interactions. Results The age of all subjects in the case group and control group were (56.19±13.10) years and (54.56± 12.48) years old. Compared with CC genotype, the OR (95%CI) values of the co?dominant genetic model AC genotype and the dominant genetic model AC+AA genotype were 0.69 (0.49-0.98) and 0.70 (0.51-0.97), respectively. Compared with the low risk group, the OR (95%CI) risk of oral cancer in the high risk group was 3.72 (2.55-5.43). The results of gene?environment interaction analysis showed that compared with the group with CC genotype and high risk of environmental exposure index, the OR (95%CI) value of oral cancer in the group with AC+AA genotype and low risk of environmental exposure index was 0.18(0.10-0.31). Furthermore there was a multiplicative interaction between rs10492336 SNPs and environmental exposure index (β=-0.405, P<0.001). Conclusion This study suggests that the TBX 5 gene rs10492336 SNPs and environmental exposure index were associated with oral cancer. And there was a multiplication interaction between rs10492336 SNPs and environmental exposure index.

Objective To analyze the overactive bladder symptom score (OABSS) in evaluating bladder dysfunction in the different stages among type 2 diabetes mellitus patients,and to explore the value of bladder hyperactivity symptom score in screening early diabetic bladder dysfunction.Methods A total of 1 157 patients with type 2 diabetes mellitus,aged 40-88 yearswith mean age of 60.2 years,were enrolled from October 2013 to October 2016.The survey included the patients' characteristics,past history,current history,OABSS and quality of life (QOL) index scores.T test,single factor analysis of variance and multiple regression analysis are used to analyze the results.Results As many as 1 157 were qualified for final statistical analysis.OABSS is 1.94 ± 1.23 in group with diabetes duration ＜ 10 years,3.24 ± 1.45in group with diabetes duration 10-20 years,and 4.00 ± 1.72 in group with diabetes duration ＞ 20 years.The differences of OABSS in the different duration of diabetes was statistically significant.As diabetic duration increased,OABSS value increased (F =48.419,P ＜ 0.001).The difference of OABSS in the different HbA1c level,age and concurrent peripheral neuropathy was statistically significant.There was no significant difference of OABSS in the different BMI and distinct therapies.There was no significant difference of OABSS in diabetes with hypertension and without hypertension,with cardiopathy and without cardiopathy,with cerebrovascular disease (CVD) and without CVD,with hyperhpemia and without hyperlipemia.The significant factors were used to make multivariate analysis.The results showed that the duration of diabetes,HbA1 c level,age,peripheral neuropathy were still statistically significant.Standardized partial regression coefficient of diabetic duration was 0.366.OABSS was positively correlated with QOL score (r =0.434,P ＜ 0.001).Conclusions The related symptoms in OABSS with diabetic bladder dysfunction is correlated with the duration of diabetes,HbA1c level,age,concurrent peripheral neuropathy among type 2 diabetes.The duration of diabetes was the most significant factor.OABSS is likely to be one of the tools to assess the early symptoms of diabetic bladder dysfunction.

Objective To observe the effect of breast massage and sticking therapy on maternal lactation and breast swelling of puerperae. Methods According to delivery sequence number, four hundred puerperae were randomly divided into two groups with 200 cases in each group. The control group only received the breast massage, and the experiment group received both breast massage and sticking therapy for 3 days. The breast swelling and maternal lactation volume were compared and observed. Result The degree of breast swelling in the experiment group was significantly lower than that in the control group and the maternal lactation volume was significantly larger than that in the control group (P<0.05). Conclusion The breast massage plus sticking therapy can promote maternal lactation and reduce breast swelling and therefore it is worthy of popularization and application.

A high performance liquid chromatography-inductively coupled plasma mass spectrometric ( HPLC-ICP-MS) method for analysis of selenocystine (SeCys2), selenite (SeⅣ), selenomethionine (SeMet) and selenate ( SeⅥ) was described. Chromatographic separation was performed using 8 mmol/L citric acid solution (pH 5). The potentially interfering 40Ar40Ar+ at selenium masses of m/z 80 was reduced using CH4 as a reactive cell gas in the dynamic reaction cell. The selenium species was extracted using ultrasonic extraction system with a mixture of protease K and lipase. The limits of detection for SeCys2 , SeⅣ, SeMet, and SeⅥwere observed as 0. 088, 0. 033, 0. 30, and 0. 17 ng/mL, respectively. The correlation coefficients were greater than 0 . 9995 . The recoveries were observed in the range of 95 . 1%-114 . 6%. The developed method was successfully applied for the determination of selenium species in Burdock and Panax notoginseng.

Objective To observe the antitumor activity of sedum lineare thunb(SLT) and it′s affection on antioxidation and tumor immunology in S180‐bearing mice .Methods S180‐bearing mice model were established by subcutaneously inoculating S180 ascitic tumor into the right armpit .From the second day ,the mice were treated with normal saline ,cyclophosphamide (50 g/kg) or two doses of SLT (4 ,8 g/kg) through intragastric administration ,and the process extent 14 d .After the last administration ,the mice body weight and the index of tumor ,spleen and thymus were calculated ,classification of white blood cells in peripheral blood was tested ,and the activity of SOD and GSH‐Px as well as the content of MDA and NO in serum were measured .Results The body weight of mice treatmented with SLT was dramaticlly higher than those of the CTX (P< 0 .05) .Compare with the model group ,SLT groups showed decreases in tumors index (P<0 .05) ,spleen index (P<0 .05) ,percentage of peripheral blood neutro‐phil (P<0 .05) and monocyte (P<0 .05) ,and increases in thymus index (P<0 .05) and percentage of lymphocyte (P< 0 .05) . The activity of SOD and GSH‐Px and NO level in the SLT groups mice′s serum were significantly higher than those of the model group (P<0 .05) ,while the content of MDA in the SLT groups mice′s serum was markedly lower than those of the model and CTX groups(P<0 .05) .Conclusion SLT has antitumor activity in S180‐bearing mice bysuppressing oxidative stress and modula‐ting tumor immune .

Objective To evaluate the role of mitochondrial permeability transition pore (mPTP) in attenuation of myocardial ischemia-reperfusion (I/R) injury by sufentanil postconditioning in rats.Methods Sixty male Sprague-Dawley rats,aged 14-15 weeks,weighing 350-420 g,were randomly divided into 4 groups (n =15 each):sham operation group (group S),group I/R,cyclosporin A group (group CP) and sufentanil postconditioning group (group SP).Myocardial I/R was produced by occlusion of left anterior descending branch of coronary artcry for 30 min followed by reperfusion.In groups CP and SP,cyclosporin A 5 mg/kg and sufentanil 1 μg/kg were injected via the jugular vein at 5 min before reperfusion respectively,while the equal volume of normal saline was injected in group I/R.At 10 min of reperfusion,hearts were excised,the myocardial mitochondria were immediately isolated and the activity of mPTP was measured by spectrophotometry.MAP and HR were recorded at 30 min of equilibration,at 30 min of ischemia and at 120 min of reperfusion and rate-pressure product (RPP) was calculated.Arterial blood samples were obtained at 120 min of reperfusion for determination of the plasma cardiac troponin Ⅰ (cTnⅠ) concentration.The animals were then sacrificed for determination of infarct size (IS) and area at risk (AAR),and IS/AAR was calculated.The mitochondrial ultra-structure was examined with electron microscope.Results Compared with group S,the mPTP activity and plasma cTnI concentration were significantly increased,and MAP and RPP were significantly decreased in the other three groups (P ＜ 0.05).Compared with group I/R,the mPTP activity,plasma cTnI concentration and IS/ARR were significantly decreased in groups CP and SP,and MAP was significantly increased in group CP (P ＜ 0.05).Compared with group CP,MAP was significantly decreased (P ＜ 0.05),while no significant change was found in the other indexes in group SP (P ＞0.05).Significant mitochondrial swelling,and disruption and disappearance of cristae were showed in I/R group.The mitochondrial structure was more complete in CP and SP groups than that in group I/R,and the disrupted cristae were found in a small number of mitochondria in CP and SP groups.Conclusion The mechanism by which sufentanil postconditioning reduces myocardial I/R injury is related to inhibition of mPTP opening in rats.