Objective To study the effects of different pellet feed hardness on the growth and reproduction,feed utilization rate,and environmental dust in laboratory mice.Methods One hundred of fifty 50 3-week-old SPF-grade C57BL/6JGpt and 150 ICR laboratory mice were randomly divided into three groups,with an equal number of males and females.They were fed diets with different hardness of 18.62 kg,23.15 kg,and 27.89 kg.Body weight,feed utilization rate,and dust levels in cages were recorded and calculated for mice aged 3-10 weeks.Forty-five 6-week-old male mice and ninety 4-week-old female mice from each strain were randomly divided into three groups and fed pellet feeds with three different hardness levels.After 2 weeks of adaptation to the same hardness feed,the mice were paired at a 1:2 male-to-female ratio and monitored for reproductive data for 3 months.Results At the age of 4 weeks,the body weight of male C57BL/6JGpt mice in 23.15 kg group was significantly higher than that in the 18.62 kg and 27.89 kg groups(P＜0.01),and the body weight of females in the 18.62 kg group was significantly higher than that in the 27.89 kg group(P＜0.05).There was no significant difference in body weight among ICR mice aged 3-10 weeks across different feed hardness groups(P＞0.05).For both strains,feed utilization rate for males was higher than that for females across different feed hardness groups at all weeks of age(P＜0.01).Compared to the 27.89 kg group,both the 18.62 kg and 23.15 kg groups showed a significant increase in the 50-mesh dust levels in cages for both strains aged 4-8 weeks(except for 7-week-old C57BL/6JGpt mice)(P＜0.05).For both C57BL/6JGpt and ICR mice,there was no significant difference in basic reproductive performance such as interval between the first litter and the monthly production index among the three feed hardness groups during the experimental period(P＞0.05).However,the monthly production index of C57BL/6JGpt mice first increased and then decreased with the increase of feed hardness,while that of ICR mice increased with increasing feed hardness,though these differences were not statistically significant(P＞0.05).Conclusion Different strains and genders had different tolerance to feed hardness.C57BL/6JGpt mice are more adapted to lower hardness feeds,while ICR mice are better suited to slightly higher hardness feeds.

With social development and technology progress, there is an increasing use of daily electronic products and radioactive medical devices, which increases the risk of exposure to radiation in medical practices, daily life activities, and work. Notably, the effects of radiation exposure on pregnant women and their offspring have attracted increasing attention. Comprehensive and accurate assessment and intervention of the effects of radiation exposure on pregnant women and their offspring are of great significance to reduce birth defects and achieve eugenics. This article reviews the effects of radiation exposure during pregnancy on offspring health based on animal experiments and clinical studies, and describes the possible mechanisms, so as to provide the basis for further studies.

Objective:To analyze the clinical characteristics of patients with acute glyphosate herbicide poisoning and the differences in the severity of poisoning.Methods:A retrospective analysis was performed on patients with acute glyphosate herbicide poisoning admitted to the First Affiliated Hospital of Zhengzhou University from January 2014 to December 2020. The general information, exposure time, poisoning dose, poisoning cause, poisoning route, clinical manifestations, laboratory examination results during hospitalization, treatment measures, hospital stays and prognosis of the patients were collected. The patients were graded according to the poisoning severity scoring standard of Chinese Expert Consensus on Diagnosis and Treatment of Acute Poisoning in 2016. The highest severity score during hospitalization was used as the final grade. According to the final grade, asymptomatic and mild patients were included in the mild group, and moderate, severe and death patients were included in the severe group. The independent sample T test or Mann-Whitney U test was used for measurement data, and χ2 test or Fisher's exact test was used for counting data. The differences of general data and clinical data between the two groups were compared. Results:According to the inclusion and exclusion criteria, 83 patients with acute glyphosate herbicide poisoning were selected as the study subjects. All patients survived, mainly mild poisoning (56.6%), with a male to female ratio of 33∶50, and an average age of 39 years. The number of poisoning cases increased yearly (the highest in 2019), and most cases occurred in spring and summer. The main cause of poisoning was suicide (71.1%), direct oral administration (83.1%) was the primary route of poisoning, and the dominating clinical manifestations were digestive symptoms (71.1%). Laboratory tests showed increased white blood cell count (WBC), neutrophil percentage (NEUT %) and D-dimer, and decreased hemoglobin and potassium. Compared with the mild group, patients in the severe group were older [(51±17) years vs. (35±19) years], had a higher proportion of suicide and direct oral administration, a longer hospital stay [8.0 (4.8, 12.0) d vs. 3.0 (2.0, 5.5) d], a higher dose of poisoning [200.0 (50.0, 200.0) mL vs. 30.0 (11.3, 57.5) mL], and higher NEUT % within 24 h of admission [(83.4±10.4) vs. (73.2±12.8)]. The increase of WBC, NEUT %, aspartate aminotransferase, prothrombin time, D-dimer and the decrease of serum potassium were more common in the severe group than the mild group, with statistical significance (all P<0.05). Conclusions:The number of patients with acute glyphosate herbicide poisoning is increasing yearly. Generally, the condition is mild and the prognosis is satisfying. The severity is more serious in the middle-aged and elderly patients andthose with direct oral administration, high toxic dose, and high NEUT % within 24 h of admission. Severe poisoning is more likely to cause changes in laboratory indicators.

Rehabilitation and multidisciplinary team management are very important to improve the prognosis of children with prolonged mechanical ventilation(PMV). The current status of rehabilitation intervention including physical therapy, neuromuscular electrical stimulation and inspiratory muscle training in adult patients with PMV were discussed, aiming to provide some evidence for the implementation of rehabilitation in children with PMV.

Objective:To explore the effects of external diaphragm electrical stimulation on the diaphragm thickness and function in mechanically ventilated children.Methods:A randomized controlled trial was conducted in children who were admitted to PICU at Children′s Hospital of Fudan University and received mechanical ventilation between June 2021 and April 2022.The control group was given the routine treatment of mechanical ventilation, and the intervention group was given external diaphragm electrical stimulation in the early stage of mechanical ventilation in addition to routine treatment.Diaphragm thickness was continuously measured by bedside ultrasound every day for one week after mechanical ventilation, and the changing trend of diaphragm thickness was observed, and the diaphragmatic thickening fraction (DTf) and the incidence of ventilator-induced diaphragmtic dysfunction(VIDD) were calculated at the same time.Results:A total of 32 valid samples were included, including 15 cases in intervention group (10 males) and 17 cases in control group (11 males). The median age of the patients was 33 (10, 77) months, and the median duration of mechanical ventilation was 12 (8, 21) days.The reasons for mechanical ventilation in children included respiratory insufficiency in ten cases, brain dysfunction in ten cases, heart failure in eight cases, and postoperative surgery in four cases.The diaphragm end-expiratory thickness (DTe) in intervention group and the control group showed a gradually decreasing trend from the 1st day to the 7th day.The left thickness was reduced by 11% on the 7th day compared to 1st day in intervention group, which was reduced by 18% in control group; the average daily DTe was reduced by 2% per day in intervention group and by 3% per day in control group.The trends on the right and left were similar.The DTe thickness in the intervention group was greater than that in control group, among which, the mean DTe thickness in the left side of the intervention group on the 7th day was (0.110 7±0.023 7)cm, which was greater than that in control group (0.093 5±0.016 9)cm, and the difference was statistically significant ( t=-2.372, P<0.05); On the second day, the mean DTe thickness on the right side in the intervention group was (0.1267±0.0277) cm, which was greater than that in control group (0.104 7±0.018 1)cm, and the difference was statistically significant ( t=-2.688, P<0.05). DTf in the intervention group was lower than that in control group at 7th day, but the difference was not statistically significant(left DTf: adjusted mean difference was -0.117, P=0.088; right DTf: adjusted mean difference was -0.065, P=0.277). The incidence of VIDD in the intervention group was lower than that in control group(33.3% vs.41.2%), but the difference was not statistically significant ( χ2=0.005, P=0.946). Conclusion:External diaphragmatic electrical stimulation may be helpful for alleviating diaphragmatic atrophy in mechanically ventilated children.However, whether the improvement of diaphragm atrophy is beneficial to clinical outcome still needs further study.

Objective: To develop the early respiratory rehabilitation techniques in pediatric intensive care unit(PICU) for children with mechanical ventilation. Methods: A respiratory rehabilitation team was established, and early respiratory rehabilitation intervention methods for critically ill children were also developed.Early bedside rehabilitation were implemented after the vital signs of mechanical ventilation children were stable for 24 hours, and the rehabilitation effect and adverse events were observed. Results: According to the patient′s condition, 23 patients in PICU received early respiratory rehabilitation after incubations, including 10 males and 13 females, aged 57.0(17.5, 91.5) months.There was no adverse event in 729 rehabilitation practices.The average consulting time was 8.0(4.0, 18.0) days after incubations.The average incubation time was 693.5(345.2, 1 027.1)hours of all the patients.As to 16 patients who were weaned before charged out, the average incubation time was 566.2(243.4, 928.7)hours, and the average incubation time from respiratory rehabilitation performance to weaning was 168.0(6.0, 564.0) hours.In 19 patients who only received limbs massage and passive movements, the average incubation time was 381.7(309.6, 541.4) hours and the average incubation time from respiratory rehabilitation performance to weaning was 187.2(81.5, 382.9) hours.However the difference between these who received respiratory rehabilitation and only received limbs massage and passive movements was not statistically significant. Conclusion It′s safe and feasible to perform the early respiratory rehabilitation in PICU for critically ill children with mechanical ventilation.

Objective To investigate the selective targeting ability of a novel folate-modified nanobubbles with two-fold amount of folate [(FOL)2-NBs] . Methods DSPE-PEG2000-AD-(FOL)2with two-fold of folate per DSPE-PEG2000 chain was synthesized and then tested by 1 H nuclear magnetic resonance (1H NMR) . The novel (FOL)2-NBs was prepared using the mechanical shaking method based on lipid-stabilized perfluoropropane . The bubble size was measured by Malvern laser particle size analyzer and the contrast enhancement ability was also detected with imaging machine using a self-made agarose mold . The experiment of selective targeting ability was also carried out in human breast cancer MCF-7 cell with over-expression of folate receptor ( FR) using fluorescence activated cell sorting ( FACS) . Results The result of 1H NMR proved that DSPE-PEG2000-AD-( FOL )2was successfully synthesized ,and the purity reached up to 90% . The novel prepared ( FOL) 2-NBs showed superior contrast enhancement ability with a particle size of ( 286 .87 ± 22 .96) nm . Compared with the conventional NBs ,the novel ( FOL) 2-NBs exhibited improved selective cellular targeting ability proven by FACS . Conclusions A novel nanobubble with improved selective targeting ability is successfully prepared and shows great potential in extravascular imaging and curation in FR overexpressed tumors .

Objective To explore the bioeffect of different parameters on 4 cell lines by ultrasoundmediated microbubble destruction.Methods The orthogonal experimental design was used to investigate the effect of three factors on the bioeffects of four cell lines under three levels.Three factors included microbubble concentration,sound intensity,irradiation time.Human breast tumor (MCF-7) cells,ovarian tumor (A2780) cells,liver tumor (Bel7402) cells and thyroid tumor (ARO) cells were exposed to ultrasound in the presence of SonoVue.The cell survival rate was determined by MTT methods and the cell luminosity factor was detected by flow cytometry.Results The optimum parameters for Bel7402 and ARO cell were the same (A2B3C2),and they were different from those from MCF-7 (A3B1C1) and A2780 (A1B3C3) cell.The cell survival rates for 4 cell lines were above 75％,and the cell luminosity factors were different among 4 cell lines.Conclusions The optimum parameters by ultrasound-mediated microbubble destruction for different cell lines are different,and under the optimum parameters the bioeffects of different cell lines are different.

Objective We tried to investigate the nutritional status and related factors in patients undergoing allogenetic hematopoietic stem cell transplantation.Methods A total of 75 patients were recruited from a class-three hospital in Suzhou.They were investigated with a basic information questionnaire and the Patient-Generated-Subjective Global Assessment (PG-SGA).The related factors influencing nutritional status were analyzed.Results The PAB level began to rise since conditioningregimen,and it rose to the highest level in the second week,then began to decline.The weight and the BMI had been declining in the four weeks since conditioning regimen.29.33％ of the patients were malnourished,the scored PG-SGA was (5.60±4.96),the percentage of patients with dietary problems was 33.3％ before conditioning regimen; 85.33％ of the patients were malnourished,the scored PG-SGA was (19.26±7.18),the percentage of patients with dietary problems was 93.2％ in the second week since conditioning regimen; 85.33％ of the patients were malnourished,the scored PG-SGA was (12.95±6.19),the percentage of patients with dietary problems was 75.8％ in the fourth week; Age is the main factor affecting the patients' albumin level in the second week.Conclusions The nutritional status of patients deteriorated and the percentage of patients with malnutrition increased during allogeneic hematopoietic stem cell transplantation.Clinical staff should pay attention to the assessment of nutritional status,and give a reasonable nutritional support when necessary.

Objective To investigate the effects of comprehensive health education for glutathione combined with met-formin in treatment of nonalcoholic fatty liver. Methods A total of 64 patients with nonalcoholic fatty liver from Jan-uary 2012 to January 2014 in our hospital, two groups were treated glutathione tablets, one tablet each time, 3 times every day; metformin tablets, one tablet each time, 3 times every day. The total courses were six months. All patients were randomly divided into intervention group and control group, the control group took random symptomatic care, the intervention group implemented a comprehensive health education interventions, the efficacy and the two groups of pa-tients after treatment ALT,AST, TC, TG, BMI levels, and BMI> 23kg/m2 abnormal rate, the rate of abnormal waist cir-cumference ≥80 cm, dyslipidemia, abnormal liver function rate, rate of abnormal ultrasound findings were compared between two groups. Results After treatment, the effective rate of the intervention group was 93.8%, was significantly higher than the control group 71.9%, the difference was statistically significant (P <0.05). After treatment, the ALT, AST, TC, TG, BMI levels of the intervention group were significantly lower than before treatment, and the ALT, AST, TC, TG, BMI of intervention group was significantly lower than the control group (P<0.05). BMI>23 kg/m2 abnormal rate, waist circumference≥80 cm abnormal rate, dyslipidemia, abnormal liver function rate, abnormal ultrasound results of intervention group were significantly lower than the control group,the difference was significant(P<0.05). Conclusion The comprehensive sexual health education can improve the effect of glutathione combined with metformin therapy in patients with non-alcoholic fatty liver, improve clinical symptoms, reduce blood fat and improve liver function, worthy of promotion and application.