To clarify the genetic diversity and structure of the nucleus population of F1-generation Litopenaeus vannamei, this study utilized 15 pairs of highly polymorphic microsatellite primers to analyze the simple sequence repeat (SSR) markers and genetic diversity in 15 full-sib families of L. vannamei. A total of 112 alleles (N_a) and 60.453 effective alleles (N_e) were identified among the selected 15 SSR loci, with the average polymorphic information content (PIC) of 0.648. The average N_e, observed heterozygosity (H_o), and expected heterozygosity (H_e) in the 15 F1 families varied from 1.925 to 2.626, 0.425 to 0.783, and 0.403 to 0.572, respectively. The 15 full-sib families were primarily clustered into three categories in the phylogenetic analysis, with the genetic distance between families ranging from 0.252 to 0.574. Additionally, the genetic differentiation coefficient (F_st) among the families varied from 0.112 to 0.278, indicating substantial genetic differentiation. Overall, this study suggested that the genetic diversity of the 15 full-sib families was moderate, providing valuable genetic insights for the subsequent breeding initiatives aimed at enhancing the tolerance of L. vannamei to high levels of soybean meal.
Penaeidae/classification* ; Microsatellite Repeats/genetics* ; Animals ; Genetic Variation ; Polymorphism, Genetic ; Phylogeny ; Alleles ; Genetic Markers

Objective To analyze result of the external quality assessment for laboratories of toxicological pathology diagnosis in organizations in China. Methods A total of 86 organizations that participated in the 2020-2021 external quality assessment in laboratory of toxicological pathology diagnosis (hereinafter referred to as "reference units") were selected as research subjects using convenient sampling method, and the assessment results were analyzed. Results The median of total score was 92, and the 0-100 percentiles were 64-100 in these 86 reference units. Among these reference units, 76 were rated as excellent, 10 as qualified, with the excellent and the qualified rate of 88.4% and 11.6%, respectively. No reference unit was rated as unqualified. The rates of excellence of the reference units in public health institutions, pharmaceutical research institutions, drug safety evaluation centers and testing companies were 95.7%, 84.2%, 85.7% and 86.7%, and the qualified rates were 4.3%, 15.8%, 14.3% and 13.3%, respectively. The distribution of excellence and qualification among the four types of reference units showed no statistical difference (P>0.05). The distribution of sample scores according to the three grades of poor, good, and excellent were 4.9%, 20.7%, and 74.5% in public health institutions, 8.6%, 23.7%, and 67.8% in pharmaceutical research institutions, 12.5%, 25.0%, and 62.5% in drug safety evaluation centers, and 5.4%, 17.5%, and 77.1% in testing companies. The proportion of excellence unit in public health institutions was higher than that in pharmaceutical research institutions (P<0.05). Conclusion The overall toxicological pathology diagnostic capabilities in China are good, and various types of reference units demonstrate comparable technical capabilities. However, there is a need for standardization of diagnostic terminology.

Objective? To anaLyze the infLuencing factors of stress hypergLycemia in patients undergoing surgery for non-diabetic Standard Type A aortic dissection and to expLore the methods of its monitoring and management. Methods? TotaLLy 100 patients with non-diabetic Standard Type A aortic dissection admitted in the Department of Cardiac Surgery, Zhongshan HospitaL were retrospectiveLy incLuded. Their generaL information incLuding age, gender, body mass index (BMI), pain score, operation time and time of circuLatory arrest as weLL as morning fasting bLood-gLucose (FBG) before operation, before extracorporeaL circuLation, before and after circuLatory arrest, after rewarming, after machine haLt, at ICU admission and on 1 - 6 day postoperativeLy was coLLected. Univariate anaLysis and Logistic regression anaLysis were used to expLore the factors affecting the peak bLood-gLucose perioperativeLy. ResuLts? The area under the ROC curve for perioperative bLood-gLucose and overaLL adverse outcome was 0.646 (95%CI 0.528-0.763,P=0.021), and the comparativeLy good cutoff vaLue of perioperative peak bLood-gLucose for the disease was 14.35. The patients' bLood-gLucose started to rise after extracorporeaL circuLation, and the tendency to rise was more significant after rewarming. Their bLood-gLucose remained at a reLativeLy high LeveL at ICU admission. It tended to decrease since 24 h postoperativeLy, and it returned to normaL LeveLs at 6 d post operation. Univariate anaLysis showed that there was statisticaL difference in BMI, white bLood ceLL, C-reactive protein (CRP), time of extracorporeaL circuLation, Acute PhysioLogy and Chronic HeaLth EvaLuation Scoring System (APACHEⅡ) and whether emergency surgery received between the patients with ≥14.35 mmoL/L or ＜14.35mmoL/L bLood-gLucose perioperativeLy (P＜0.05). According to Logistic regression anaLysis, BMI, CRP and time of extracorporeaL circuLation were independent risk factors of stress hypergLycemia in patients undergoing surgery for non-diabetic Standard Type A aortic dissection (OR＞1). ConcLusions? Severe infLammatory response and high BMI preoperativeLy indicate that stress hypergLycemia may occur in patients undergoing surgery for non-diabetic Standard Type A aortic dissection during the perioperative period. Perioperative hypergLycemia can be reduced by reducing the time of extracorporeaL circuLation. MedicaL and nursing workers need to enhance gLycemic monitoring in the process of extracorporeaL circuLation, after rewarming and post operation and deveLop targeted gLycemic management protocoLs for the patients.

Objective: To study the experience of famous old Traditional Chinese Medicine doctors of Jiangsu, Zhejiangand Shanghai in applying medicinal paste according to the deconstruction analysis of the medical cases formed by miningthe linked data of original cases on the basis of TCM features. Methods: To apply a deconstruction analysis to thesedoctors. medical cases with the quantifiable trend data on the data processing platform of Medcase. Results: This studycollected 472 medical visits, 250 pathogenesis elements, 400 therapies and 529 kinds of herbs. Conclusion: The medicinal pastes are applied by these famous doctors to treat commonly seen consumptive diseases, namely to intervenesub-health status. The chief core indications are lassitude, poor sleep, lumbar soreness and poor appetite; the relatedtongue and pulse conditions are thin or white tongue coating, red or pale tongue proper, and a thready or wiry pulse; thechief pathogenesis elements are deficiency of the liver and kidney, and deficiency of the spleen and kidney; thefrequently used herbs are Radix Astragali seu Hedysari, Rhizoma Atractylodis Macrocephalae, Poria, Radix Angelicae Sinensis, Radix Paeoniae, Radix Glycyrrhizae, Radix Rehmanniae Preparata, etc. The prescriptions for medicinal pastesare made by modifying several basic formulas including Sijunzi Decoction, Siwu Decoction, Bazhen Decoction, DangguiBuxue Decoction, Liuwei Dihuang Pills, and Shengmai Decoction. The common excipients for pastes are Ejiao, rockcandy, Guibanjiao, Lujiaojio, etc. The guide for making the pastes are combined therapies, such as regulating both qi andblood, tonifying both yin and yang, and treating both deficiency and excess.

Objective To observe and assess the effects of full marathon on hemodynamics and cardiac electrophysiology of marathon amateurs without adverse event after the race.Methods Fiftyone subjects were included in the final analysis of the study,blood pressure,heart rate,body surface electrocardiogram (ECG) of all subjects under static status before the race and within (15-30) min after the race were detected,and sufficient amounts of the peripheral blood and the radial arterial blood specimens of all subjects under static status before the race and within (15-30) min after the race were collected instantly.The peripheral blood was used for measuring markers of muscle injury and NT-proBNP,and the radial arterial blood was taken for blood gas analysis.The QTc interval,QRS,PR interval,and QTd interval were recorded from the 12-lead ECG report.Results Compared with those under static status before the race,the systolic blood pressure,diastolic blood pressure,mean arterial blood pressure and heart rate of all the subjects within (15-30) min after the race were significantly higher (P＜0.05).When the markers of striated muscle injury were compared before and after the competition,levels of CK,cTNI,LDH,and myoglobin after the race were significantly increased compared with them under static status before the race (P ＜0.05),and the level of NT-proBNP after the race was also significantly increased compared with it before the race (P＜0.05).When blood gas analysis before the race was compared with that after the race,the PH values after race were significantly lower than it before race (P＜0.05).The level of lactic acid after the race was significantly higher than it before race (P＜0.05).After the race,the levels of PCO2,SBE and HCO3-decreased significantly compared with those before race (P＜0.05),and the QTc and QTd intervals after the race increased significantly compared with those before the race,however,the QTc interval and QTd interval for all subjects before and after the competition were within the normal range.Conclusions Full marathon significantly affect the myocardial electrophysiological markers of healthy amateur athletes without chronic diseases,but those markers fluctuate within the normal range.

Objective:To compare the pain control efficiency of continuous adductor canal block (ACB) and femoral nerve block (FNB) in total knee arthroplasty.Methods:From April to September 2016,patients with severe knee osteoarthritis undergoing primary unilateral total knee arthroplasty (TKA) were prospectively observed,and all the patients were randomized received ultrasound-guided continuous ACB or FNB after surgery.Numeric pain rating scales (NPRS)pain scores in rest and activity 2,6,12,24 and 48 h after surgery were collected,and the preoperative and postoperative quadriceps strength at 24 and 48 h were analyzed.Opioids consumption and anesthesia related adverse effects were also recorded.Results:In the study,40 patients were enrolled,with 20 patients in each group,male ∶female =7 ∶ 33,the age:(63.8 ± 10.1) years,and the body mass index (BMI):(28.5 ± 3.5) kg/ m2.The general conditions were comparable between the two groups.Though the rest pain 2 h after surgery [ACB =0.0(0,6),FNB =3.0(0,5),P=0.004] and activity pain 12 h post operation [ACB =3.0(3,0),FNB =5.5(0,10),P =0.004] were lower in ACB group compared with FNB group,there was no statistical difference in the other pain checking points between the two groups.The quadriceps strength 24 h and 48 h after surgery were (85.3-± 27.6) N and (80.0 ± 30.1) N in ACB group,(69.0 ± 29.4) N and (64.4 ± 32.0) N in FNB group,both of them were declined by time.The exact data were higher in ACB group,however,there was no statistical difference between the two group by repeated measurements variance analysis(F =2.703,P =0.108).Four patients in ACB group and five in FNB acquired additional use of dolantin once (100 mg/per time) within 24 h.And among them,three patients acquired once dolantin in ACB,two in FNB,from 24 to 48 h postoperation.There were five patients who suffered nausea postoperation in ACB group,and one who reported xerostomia.Four patients in FNB had nausea with vomiting,and three experienced xerostomia.Deep vein thrombosis appeared in 2 patients in FNB group,but no one in ACB group.Conclusion:Continuous ACB is not superior in pain control after TKA compared with FNB,and the quadriceps strength could be reserved more by this method,which performed early benefits in fast rehabilitation.

Objective:To analyze and summarize the causes of unscheduled suspension of knee and hip arthroplasty and to provide the method for optimizing the patient's pre-operative management and improving the efficiency of medical resources as well as the patient's satisfaction.Methods: The data for this report was retrospectively collected from September 2013 to August 2014 in our hospital,from cases of knee and hip arthroplasty that were suspended before the scheduled operation time.Acquisition data from the collected cases including the patients' gender,age and the surgical procedure.At the same time,the suspension reasons were recorded and analyzed.All the decisions of suspension was made by the surgeons and the anesthesiologists according to the abnormal result of preoperative examinations,after communicating with the patients and their families and obtaining their understandings.Results: In the collecting period,our department scheduled 1 146 cases of knee and hip arthroplasty,among which 1 003 were completed,143 suspended (12.5％ suspension rate).Among the causes of suspension,the top four common causes were cardiovascular disease (44/143,31％),other infections (20/143,14％),bacteriuria (18/143,13％) and inappropriate surgical indication (16/143,11％).Other causes include surgeon's reason,Blood system abnormalities,high inflammatory index,deep vein thrombosis,other diseases uncontrolled,abnormal liver function and poor diabetes mellitus control,etc.For the rate of suspension,there was no significant difference between the patients with different genders (male: 15.0％,and female: 11.7％,P=0.149),or age (≤50 years: 13.0％;51-65 years: 11.6％;66-80 years 13.3％;>80 years 11.1％;P=0.864).However compared with knee arthroplasty,hip arthroplasty had a higher suspension rate (knee arthroplasry 11.1％,hip arthroplasry 16.1％,P=0.021).Conclusion: It is important to educate and manage the patients before their knee and hip arthroplasty.Through clear diagnosis,detailed medical history analysis careful physical examination,and targeted outpatient examinations and tests for which priority was focused on cardiovascular or other system diseases we could minimize the occurrence of operative suspension post hospitalization,therefore improving the efficiency of the use of medical resources.

The continuing education system at the Peking University Health Science Center for vis-iting scholars (Research program for young and middle-aged doctors) is a relatively advanced and compre-hensive medical continuing education system in China, among which, the tutorial system is a good method to guide the visiting scholars of continuing education. On this basis we conducted scholars learning effect questionnaire survey and combined with the feedback results, discussed the advantages and disadvantages of the current educational system of visiting scholars in China, and put forward some concrete suggestions on the development of the continuing education in China.

Objective To observe the impact of improving the compliance of ventilator bundle on morbidity of ventilator-associated pneumonia (VAP) in intensive care unit (ICU) patients undergoing mechanical ventilation (MV) guided by context of Joint Commission International (JCI) settings, and to study the oral care efficacy of suction tube sponge brush. Methods A prospective study was conducted. The patients who needed MV admitted to Department of Critical Care Medicine of the First Affiliated Hospital of Xiamen University from January 2013 to December 2016 were enrolled. In the context of JCI settings, necessary measurements were taken to enhance the compliance of ventilator bundle each year. In 2013, the preventive measures were set up and the education was strengthened. In 2014,the compliance of hand hygiene and bedside elevation was strengthened. In 2015, a control study was conducted to evaluate the effect between the traditional cotton dipped in chlorhexidine and the suction tube sponge brush rinsed with chlorhexidine on oral health impact parameters. The suction tube sponge brush rinsed with chlorhexidine oral care was introduced to improve compliance. In 2016, electronic bundle checklist for daily self-audits was conducted. The annually morbidity of VAP through the software of hospital and ICU was collected and calculated. The annual incidence of VAP was indicated by the VAP cases per 1000 MV days. Based on the VAP incidence rate in 2013 as 1, the VAP incidence-rate ratio (IRR) of each year was calculated. Results During the study period, a total of 2733 patients admitted to the ICU, including 1403 patients undergoing MV. Ninety-four of the 1403 patients with community-acquired pneumonia (CAP), aspiration pneumonia, back elevation ban, incomplete information, and withdrew from the study were excluded. 1399 patients undergoing MV were enrolled in the final analysis, with total MV days of 11012 days, and 94 patients occurred VAP. The annual incidence of VAP was progressively declined from 2013 to 2016, and the VAP cases per 1000 MV days were 17.0, 10.0, 5.9, 3.5 cases, respectively. Based on the VAP incidence rate in 2013, the IRR of VAP from 2014 to 2016 was also progressively declined, which was 0.59 [95% confidence interval (95%CI) = 0.35-0.98], 0.35 (95%CI = 0.18-0.64), and 0.21 (95%CI = 0.09-0.41), with statistical significance (all P < 0.05). In 2013, ICU patients had the lowest rates of bedside elevation and hand hygiene compliance, which were 28.57% and 54.29%, respectively. Compared with 2013, by the implementation of two quality control circle (QCC) projects for bedside elevation and hand hygiene, the rates of bedside elevation and hand hygiene compliance were improved significantly in 2014, which were 82.35%, 91.18%, respectively (both P < 0.05). In 2015, the compliance of chlorhexidine oral care which was the worst performed in 2014 had been improved by the method of QCC, and the rate of the compliance was significantly higher than that in 2013 (87.10% vs. 62.86%, P < 0.05). Compared with 2013, bundle compliance was significantly increased in 2016, except for the sterile operation of the suction tube [daily wake and weaning: 95.00% vs. 71.43%, bedside elevation for over 30°: 92.50% vs. 28.57%, hand hygiene: 97.50% vs. 54.29%, chlorhexidine mouth care once per 6-8 hours:95.00% vs. 62.86%, turned back and posture drainage: 97.50% vs. 80.00%], the differences were statistically significant (all P < 0.05). The incidences of bad breath, dirt residue and plaque were significantly lower in the group of oral care by using suction tube sponge brush with chlorhexidine (30 cases) compared with the group of traditional cotton pad with chlorhexidine (30 cases; bad breath: 10.0% vs. 40.0% %, dirt residue: 16.7% vs. 70.0%, plaque: 3.3% vs. 30.0%, all P < 0.05). There was no significant difference in the incidence of oral ulcers between the oral brush group and the traditional group (10.0% vs. 30.0%, P > 0.05). Conclusion Ventilator bundle can effectively reduce the morbidity of VAP in the context of JCI settings, and the oral care by using suction tube sponge brush and chlorhexidine can effectively improve oral hygiene.

Objective To approach the effects of full Marathon on striated muscle and renal function of Marathon amateurs without complaints. Methods A prospective self-paired design study was conducted. The amateurs without body discomfort, hematuria, brown urine, or persistent muscle pain within 1 week after the 2012 Xiamen International Marathon Race were enrolled voluntarily. The peripheral blood and random urine specimens of all subjects under static status 1 week before the race and after the race instantly (within 10 minutes after finishing the race) were collected to detect markers of renal function and striated muscle injury. Results Sixty-one subjects were included in the final analysis of the study with full Marathon of 42.195 km and mean race time of (297.05± 55.60) minutes. Compared with those under static status before the race, the markers of renal function including the levels of urinary N-acetyl-beta-D-glucusamidase [NAG (U/L): 64.00 (54.50, 85.50) vs. 9.50 (8.10, 11.50)], urinary β2-microspheres protein [β2-MG (μg/L): 261.00 (128.50, 1 608.00) vs. 66.60 (33.75, 123.00)], random urinary creatinine [UCr (μmol/L): 19 066.56±10 938.31 vs. 5 872.52±4 363.20] and serum creatinine [SCr (μmol/L): 129.97±25.84 vs. 97.39±14.51] immediately after the race were significantly increased (all P < 0.01); the markers of muscle injury including the levels of serum creatine kinase [CK (U/L): 864.00 (504.00, 1 644.00) vs. 164.00 (128.00, 256.00)], lactic dehydrogenase [LDH (U/L): 383.26±141.69 vs. 182.23±41.12], myoglobin [Mb (mg/L): 1 880.00 (1 080.00, 3 300.00) vs. 42.00 (36.00, 54.50)], alanine aminotransferase [ALT (U/L): 27.0 (19.5, 38.0) vs. 24.0 (15.0, 29.5)] and aspartate transaminase [AST (U/L): 52.07±25.13 vs. 28.28±11.86] were also significantly increased (all P < 0.01), and the increase in CK, Mb, and LDH were more significant. It was shown by correlation analysis that CK after race was negatively correlated with age (r = -0.352, P = 0.005) and body mass index (r = -0.271, P = 0.035), and it was positively correlated with racing time (r = 0.387, P = 0.002) and urinary β2-MG after the race instantly (r = 0.364, P = 0.004). Mb after race was negatively correlated with body mass index (r = -0.331, P = 0.009), and it was positively correlated with urinary β2-MG after the race instantly (r = 0.315, P = 0.013). LDH after race was negatively correlated with age (r = -0.275, P = 0.032) and body mass index (r = -0.377, P = 0.003), and it was positively correlated with urinary β2-MG after the race instantly (r = 0.424, P = 0.001). Conclusion Full Marathon could significantly impact striated muscle and renal function of Marathon amateurs without complaints.