Objective · To explore the effects of brisk walking on blood pressure, body mass index (BMI), and autonomic nerve activity of male elderly with hypertension in community-based health centers in Shanghai. Methods · A total of 630 elderly men received brisk walking treatment (>10000 steps/d) voluntarily, who were selected from six community-based health centers in Pudong New Area of Shanghai. Among them, 210 people stick to training for 12 weeks. According to whether suffering from hypertension, the people were assigned to hypertension intervened group (intervention group, n=110) and normal intervened group (control group 1, n=100). Blood pressure, BMI, heart rate and autonomic nerve activity before and after the training were compared. Results · After 12 weeks of training, systolic blood pressure (SBP), diastolic blood pressure (DBP) and sympathetic nerve activity of intervention group were significantly lower than those before the training (P<0.05). SBP was also significantly lower than control group 2 (P<0.05). However, heart rate, BMI, parasympathetic nerve activity and baroreceptor reflex sensitivity did not change significantly after the training (P>0.05). Conclusion · Brisk walking treatment lasting for 12 weeks can decrease blood pressure and sympathetic nerve activity in elderly men with hypertension. It is worthy to be popularized in the community.

In order to improve the yield of bacterial cellulose (BC), the fermentation medium of BC-producing strain J2 (Gluconobacter) was optimized, and BC ultra-micro-structure was observed. Initially, Plackett-Burman design was employed to evaluate eight variables which were relevant to BC production. Three statistically significant parameters including yeast extract, ZnSO4, ethanol were selected and other 5 variables were not significant (P > 0.05). The optimized levels of three variables were defined by Box-Behnken design and response surface methodology (RSM). BC ultra-micro-structure was observed by scanning electron microscope (SEM) with cotton cellulose as comparison. The results indicated that the BC yield under the optimum fermentation medium was 11.52 g/100 mL, which was as 1.35 times as that under the original fermentation medium. The SEM photos manifested that bacterial cellulose ribbon, with a diameter less than 0.1 microm, was less than cotton cellulose ribbon. The bacteria inside the cellulose net were eliminated after the NaOH treatment.
Cell Culture Techniques ; Cellulose ; biosynthesis ; ultrastructure ; Culture Media ; chemistry ; Fermentation ; Gluconobacter ; cytology ; metabolism

Objective:To explore the application value of FilmArray detection in children with acute lower respiratory tract infection and conduct economics analysis.Methods:From December 1, 2016 to November 30, 2017, 1 380 patients were enrolled in our study.Some children(FilmArray group) were tested for respiratory pathogens with FilmArray, while others (control group) were tested by 7-box antigen test of respiratory virus, gold colloid test of influenza and mycoplasma antibody.Those with underlying diseases were excluded.A total of 160 cases in the FilmArray group and 160 cases in the control group were obtained with tendency score matching method.The physical examination of pathogens, clinical indicators, usage of anti-infective drugs and hospitalization related costs were compared.Results:The positive rate of FilmArray test was significantly higher than that in control group (86.88% vs. 45.91%). The most common pathogens detected by FilmArray were adenovirus(39 cases), rhinovirus(34 cases), and parainfluenza virus(30 cases). In the FilmArray group, nine cases were positive for botulinum pertussis, accounting for 5.6% of the total.The hospitalization time of FilmArray group was shorter than that in control group [(8.89±6.23 days vs.(11.51±14.43)days]. In FilmArray group, the antibiotics were used for a shorter time, and 18 children did not use antibiotics during hospitalization.Compared with the control group, the hospitalization cost had no significant difference in the FilmArray group, but the antibiotic cost was less, as well as hospitalization time was shorter.The average hospitalization cost saved by using the FilmArray test was nearly 2 000 yuan per person. Conclusion:The application of FilmArray detection in children with acute lower respiratory tract infection can quickly and accurately identify a various infections of virus, bacteria and atypical pathogen, which guides using anti-infective drugs more reasonably.The application of FilmArray detection shortens the average hospitalization days of children, increases the utilization efficiency of medical resources, and reduces the medical cost and indirect economic loss of children’s families, which has certain economics significance.

Objective:To explore the features of atherosclerotic plaque in patients with type 2 diabetes mellitus by contrast-enhanced ultrasound (CEUS), and to analyze the correlation between the features and leukocyte count in peripheral blood.Methods:A total of 30 type 2 diabetic patients with carotid atherosclerotic plaque treated in Tangdu Hospital of Air Force Military Medical University who underwent CEUS from March 2018 to September 2021 were included as the diabetes group. Thirty-two non-diabetic patients with carotid atherosclerotic plaque who were matched for age and sex during the same period served as the control group. The optimized plaques were performed by CEUS to obtain parameters including peak (P), time to peak (TP), sharpness (S) and area under the curve (AUC) of time-intensity gamma fitting curve (FC curve). The differential count of leukocytes in peripheral blood was detected by the automatic hematology analyzer. Spearman rank correlation and multiple linear regression were used to analyze the correlation between CEUS parameters of plaque and the differential leukocyte count in peripheral blood.Results:①The peripheral blood leukocyte count, monocyte count and monocyte proportion in the diabetes group were higher than those in the control group (all P<0.05). ②P and AUC in the diabetes group were higher than those in the control group (all P<0.05). ③There was linear relationship( B=75.440, P<0.001) and positive correlation ( rs=0.929) between P and peripheral blood monocyte count in the diabetes group. Conclusions:The neovascularization density and perfusion in carotid plaques in patients with type 2 diabetes mellitus are increased, which may be related to the increase of leukocytes in circulation, especially monocytes.

Objective:To evaluate the intelligence, movement and physical development of 2-month-old infants, and to explore the influencing factors of early infant development.Methods:A total of 203 infants aged 42 days who underwent physical examination in the Department of Neonatology of the Fourth Affiliated Hospital of Harbin Medical University from May to December 2021 were selected as subjects. At the age of 2 months, 184 infants were followed up for their intelligence, movement and physical development. The intelligence and movement development of infants were evaluated with the intelligence development scale. Their body length, weight, and head circumference were measured, and physical development was assessed by Z-score method. Logistic regression was used to analyze the influencing factors of intelligence, movement and physical development of 2-month-old infants.Results:The median mental developmental index (MDI) of 184 2-month-old infants was 101; the median psychomotor developmental index (PDI) was 89; the body length was (59.3 ± 2.0) cm, the body weight was (5.8 ± 0.6) kg, and the head circumference was (38.9 ± 1.1) cm. Multiple logistic regression analysis showed that the influencing factors of MDI were maternal delivery age and infant gestational age [odds ratio ( OR) = 0.849, 0.463, P < 0.05]; the influencing factors of PDI were maternal prenatal education and average sleep time per night during pregnancy ( OR = 0.512, 0.666, P < 0.05); the influencing factor of body mass index (BMI) was maternal iodine supplements during pregnancy ( OR = 2.858, P = 0.018); the influencing factor of length-for-age Z-score (LAZ) was maternal prenatal education during pregnancy ( OR = 0.265, P = 0.026); the influencing factors of weight-for-age Z-score (WAZ) included maternal average sleep time per night, the frequency of sleeping time exceeding 12 am and the average weekly exercise duration during pregnancy ( OR = 0.277, 1.106, 0.990, P < 0.05). Conclusion:Maternal delivery age, prenatal education, sleep duration, intake of iodine supplements, exercise duration during pregnancy, and infant gestational age are factors affecting the intelligence, movement and physical development of 2-month-old infants, which should be paid attention to and measures should be taken to improve the population quality.