Objective To investigate the influence of producing areas and sexual reproduction on the genetic features of Citrus grandis‘Tomentosa’. Methods The genetic distance in different species was counted,and the DNA fingerprint of germplasm resources of Citrus grandis ‘Tomentosa’ was established after random amplified polymorphic DNA analysis of Citrus grandis ‘Tomentosa’ and Citrus grandis (L.) Osbeck of various species from different producing areas. Results The genetic distance index D of Citrus grandis ‘Tomentosa’ and Citrus grandis (L.) Osbeck of various species from different producing areas was in the range of 0.01~0.64. Conclusion Sexual reproduction and the changes of producing areas can result in the genetic diversity of Citrus grandis ‘Tomentosa’.

Objective To investigate the relationship between body mass index (BMI) and health-related quality of life (HRQOL) in the adult Chinese population.Methods Data of 21 108 adults was collected from a cross-sectional survey performed in 9 provinces of China (Jiangsu,Anhui,Gansu,Qinghai,Fujian,Beijing,Jilin,Jiangxi and Henan province).Rank sum test was used to compare HRQOL with different BMI category.Multiple logistic regression analysis was used to assess the impact of different BMI category on HRQOL after adjusted for sex,age,marital,education,physical activity status,and tobacco and alcohol addiction.Results (1) For healthy subjects,the overweight BMI group had the highest HRQOL score in the physical component summary (PCS) (83.69±14.09) and mental component summary (MCS)(80.29± 15.41),while the underweight group had the worst HRQOL(81.20-± 14.05,74.82± 16.41).For subjects with chronic condition,overweight had the highest H RQOL score in the PCS(74.63± 18.51),and obese group had the best HRQOL in the MCS (76.75± 18.83).The variation among healthy and chronic disease subjects was much greater than the differences among BMI category groups.(2) Compared with normal weight,data on odds ratio(ORs) of impaired HRQOL in PCS(healthy subjects OR=1.23(1.10-1.35),chronic disease subjects OR=1.48(1.20-1.82)) MCS(healthy subjects OR=1.14(1.03-1.26),chronic disease subjects OR=1.37 (1.11-1.68)) and multiple dimensions increased among underweight.ORs of impaired HRQOL in PCS and general health dimension,MCS (healthy subjects OR =0.81 (0.72-0.91),chronic disease subjects OR=0.80(0.71-0.91)) and multiple dimensions decreased among overweight.ORs of impaired HRQOL in physical functioning dimension (healthy subjects OR=1.91 (1.25-2.92),chronic disease subjects OR=1.65(1.21-2.26)) while in MCS and role emotional and mental health dimension decreased among obese.Conclusion Whatever health or chronic disease,the influence of BMI on HRQOL is similar:the HRQOL score for the underweight group is significantly lower than that for other BMI groups in PCS and MCS.Overweight and the obese people has better HRQOL in MCS,and the obese people has poor physical function.The relation above between BMI and HRQOL is more obvious in people with chronic disease.

Objective To sum up the specificity in clinical care of repetitive transcranial magnetic stimulation (rTMS),and provide reference for putting forward scientific and effective clinical care project.Methods 200 male schizophrenia patients with rTMS treatment were divided into the research group and the control group with 100 cases in each group randomly.Then,the research group adopted the specific nursing which was obtained from the pre-experiment while the control group adopted the routine care.Moreover,NORS scale was used to evaluate the treatment effect.Changhai Pain Measuring Scale was employed to assess headaches in pre-treatment and post-treatment.Results The data of the research group in NORS scale was obviously lower than the control group,and the difference between two groups had statistical significance.No case occurred adverse reaction in the research group,in contract with many cases with adverse reaction in the control group.Conclusions Specific nursing can reduce complications effectively for schizophrenia patients receiving rTMS treatment,and it is a scientific,effective and mature clinical care method.

Objective To explore the effect of inhaled iloprost (Ventavis) for patients with congenital heart disease associated with pulmonary hypertension.Methods Twenty-two patients with congenital heart disease associated with pulmonary hypertension were selected to inhale Ventsvis by atomizer before surgery ,the required dosage is 25-30ng/(kg.min),aerosolization of iloprest was inhaled by PARI Junior BOY N after diluted with 2ml physiological saline at 3-hour intervals .The change of hemodynamic effects was measured by Doppler ultrasonography after 60min,120min,and 180min.Results The left and fight vemfieular cardiac output at 60min,120min and 180rain after therapy were markedly higher than that before inhaled iloprost ,respirator therapy time was shorter in patients inhaled iloprost.Conclusion inhaled iloprost can increase cardiac output and improve patients cardiac function.Thus,the therapy with inhaled iloprost is effective and feasible.

Chloroplast genome sequences have comprehensive application prospects in DNA barcoding and chloroplast engineering in traditional Chinese medicine. The complete chloroplast genome of Magnolia officinalis sequenced by high-throughput pyrosequencing and a sequencing procedure was established. Fourteen contigs were obtained after de nove assembly. The sequencing percent of coverage was 99.99%. The chloroplast genome is 160 183 bp in size, and has a typical quadripartite structure with the large (LSC, 88 210 bp) and small copy (SSC, 18 843 bp) regions separated by two copies of an inverted repeat (IRs, 26 565 bp each). chloroplast genes were successfully annotated, of which 17 genes located in each IR region. The chloroplast genome features in Magnolia officinalis are nearly identical to those from other Magnoliid chloroplast genomes. Phylogenetic analyses were performed based on 81 shared coding-genes for a total of 9 Magnolia samples of 5 closely related species. Results showed that distinguishing among species was generally straightforward at the species and population level. This study confirmed the effectiveness of our chloroplast genome sequencing procedure. The chloroplast genome can provide distinguishing differences to help identify Magnolia officinalis and its closely related plants.

Objective To search one ultrasonic method which could evaluate gastric emptying function accurately.Methods The gastric emptying time of 74 normal volunteers were measured by radioisotope scanning and different ultrasonic methods which including gastric antrum area,gastric antrum volume and whole gastric cylinder method.Results The gastric emptying time measured by whole gastric cylinder method related best with those measured by radioisotope scanning (r =0.79).The gastric emptying time was no significant difference between the cylinder method and radionuclide scanning (P ＞0.05).Compared with radionuclide scanning,those measured by gastric antrum area and gastric antrum volume had significant differences.Conclusions The whole gastric cylinder method can accurately reflect the gastric emptying function.

Lin28 is a highly conserved RNA-binding protein, including Lin28a and Lin28b. Lin28 is involved in many physiological processes such as cell differentiation, growth and metabolism. In recent years, it has been found that Lin28 is closely related to the pathogenesis and development of numerous major diseases. The relationships between Lin28 and related diseases such as tumor, cardiovascular disease and diabetes are reviewed in this article.

To analyze the predictive value of serum intact parathyroid hormone (iPTH) and alkaline phosphatase (ALP) on all-cause and cardiovascular mortality in maintaining hemodialysis (MHD) patients. A total of 224 MHD patients were prospectively investigated and followed up for 2 years. Serum iPTH levels were not associated with all-cause death and cardiovascular death ( HR=1.001, 95% CI 1.000-1.004, P=0.048) . The level of serum ALP was associated with cardiovascular death ( HR=1.002, 95% CI 1.000-1.004, P=0.033) . ALP≥106 IU/L was an independent risk factor for cardiovascular death in MHD patients ( P<0.05) . The joint variable was correlated with mortality in MHD patients ( HR=1.002, 95% CI 1.000~1.004, P=0.033) , that equal or over 37.28 was an independent risk factor for mortality ( P<0.05).

Objective: To understand and analyze the epidemiological characteristics of dental caries in children and its effects on jaw function, so as to prevent occurrence of abnormality of jaw function. Methods: In October 2020, 860 cases of children from 5 kindergartens and 3 primary schools in Beijing were selected by adopting the convenience sampling method. All of them received oral examination, and the questionnaire according to the fourth national oral health epidemiological survey standard, including demographic information, eating habits, oral hygiene habits, oral health care,etc. The epidemiological characteristics of dental caries in children and its effects on jaw function were analyzed. Results: A total of 190 children had dental caries, with a dental caries incidence rate of 22.09%. Dental caries in children s deciduous teeth or permanent teeth was related to age, residence, parents education level,whethe to eat before going to bed, whether eating sweet food, tooth brushing age, daily brushing frequency, whether parents have assisted tooth brushing, whether regular oral examination, whether parents have received oral health guidance( χ 2= 5.04 ,4.70，75.37，7.91，12.03，9.30，7.64，255.47，253.27，11.38, P <0.05). Compared with the noncaries group[(81.52±3.16， 80.54± 1.52，1.92±0.25，31.52±1.62，33.63±3.41，50.72±1.68)°], the sella nasion A point(SNA), sella nasion B point(SNB),A point nasion B point(ANB),frankfot horizontal mandibular plane angle(FH MP),skull nasion mandibular plane angle(SN MP),anteriors relationship palataplane mandibular(Ptm ANS) decreased in the dental caries group[(78.62±2.11，79.35±1.02，1.68±0.32，30.69±0.45，32.15±3.02，48.62±1.21)°](t=78.62,79.35,10.94, 30.69, 32.15, 48.62, P<0.05). Conclusion The prevalence of caries in children was high and jaw structure abnormalities and dysfunction. It is suggested that caries prevention and control work should be carried out early to strengthen the prevention and control of oral disease education work.

Objective:To evaluate the effect of intraoperative individualized systolic blood pressure (SBP) management on myocardial injury after hip replacement in elderly patients at high risks of hypertension.Methods:One hundred and eighty-two patients of either sex, aged 60-89 yr, with body mass index of 18-26 kg/m 2, with a history of hypertension requiring drug treatment and stratified high risk factors of cardiovascular risk factors, scheduled for elective hip replacement under general anesthesia, were divided into 2 groups ( n=91 each) using a random number table method: routine management group and individualized SBP management group. Individualized SBP management group maintained the intraoperative SBP at 90%-110% of the baseline value, and routine management group implemented blood pressure management according to the current routine clinical pathway.The intermedian cubital venous blood samples were collected before surgery and at 24, 48, and 72 h after surgery for determination of the serum concentrations of high sensitivity cardiac troponin T. Postoperative myocardial injury and myocardial infarction were also recorded. The 30-day all-cause mortality was recorded on day 30 after surgery. Results:The incidence of postoperative myocardial injury and serum concentrations of high sensitivity cardiac troponin T at 24, 48 and 72 h after surgery were significantly decreased, and the length of hospital stay was shortened in individualized SBP management group as compared with routine management group ( P<0.05). Conclusions:Intraoperative individualized SBP management can reduce the postoperative myocardial injury in elderly patients at high risk of hypertension undergoing hip replacement.