Objective:To investigate the effect of microwave on human adenovirus type 2 (HAdV-2) capsid protein in simulated infectious wastes.Methods:Droplets of HAdV-2 virus suspension were added to medical disposable gloves to simulate infectious waste, irradiated under different microwave conditions, the temperature change was recorded, and the irradiated viral supernatant was treated with Dnase I and detected by PCR and qPCR to determine the effect of microwave on the integrity of the viral capsid. ELISA was used to detect the effect of microwave irradiation on the structure of viral hexon protein. The virus was treated alone at the highest temperature during microwave irradiation to investigate whether there were non-thermal effects during microwave disinfection.Results:The maximum temperature during microwave irradiation was 76 ℃, and the PCR and qPCR result showed that Dnase I could significantly damage the viral nucleic acid after microwave irradiation, while the virus control group and heat treatment group were not significantly affected, indicating that microwave irradiation could destroy the integrity of the viral capsid. The result of ELISA showed that microwave irradiation could significantly weaken the binding ability of Hexon protein and antibody, and the result of heat treatment group were similar.Conclusions:Microwave irradiation can destroy the integrity of the HAdV-2 capsid and the structure of Hexon protein, in which the damage to the integrity of the capsid is mainly due to non-thermal effects, and the structural changes of hexon protein are mainly due to thermal effects.

Objective To investigate the changes of chromosome aberration and micronucleus frequencies in the peripheral blood of patients with cancer before and after treatment, and to provide a basis for clinical prevention and treatment. Methods We collected the physical examination data of 102 patients with cancer before and after treatment from 2016 to 2021 to analyze the changes of chromosome aberration and micronucleus frequencies in peripheral blood. Results Before and after treatment, there were significant differences in chromosome aberration frequency and micronucleus frequency in peripheral blood lymphocytes in patients having radiotherapy or chemoradiotherapy (all P < 0.05), but no significant difference was observed in either index for patients having chemotherapy (both P > 0.05). Before and after radiotherapy, there were significant differences in the numbers of patients with abnormal chromosome aberration frequency and those with abnormal micronucleus frequency in lymphocytes (both P < 0.001). Before and after chemotherapy, there was no significant difference in the number of patients with abnormal chromosome aberration frequency (P = 0.100) or those with abnormal micronucleus frequency (P = 0.110). Conclusion Radiotherapy can cause abnormalities in chromosome aberration and micronucleus frequencies in peripheral blood lymphocytes, which can be useful for monitoring radiotherapy injury to formulate effective emergency plans and evaluate radiation dose in each course of treatment.

Objective:To compare the differences of chemical components between single decoction and mixed decoction with different compatibility ratio of Inulae Flos- Haematitum medicinal pair. Methods:UPLC method was used to determine the contents of 5-caffeoylquinic acid, chlorogenic acid, 4-dicaffeoylquinic acid, caffeic acid, isoquercitrin, isochlorogenic acid B, 1,5- dicaffeoyl quinic acid, isochlorogenic acid C and the fingerprints of the single decoctions and mixed decoctions of Inulae Flos- Haematitum medicinal pair in four groups of proportions. The "peak area/sample weight" value of each common peak in the fingerprints was calculated, and the SPSS 26.0 was used for independent-sample t-test analysis. Results:There are significant differences in the "peak area/weight" values of peak 1, peak 2, peak 4, peak 6 , peak 9, peak 10, peak 12, peak 13, peak 15 between mixed decoction and single decoction of Inulae Flos - Haematitum medicinal pair with different compatibility ratios ( P<0.05), with statistical significance; when the compatibility ratio of Inulae Flos- Haematitum medicinal pair was 3:1, the difference of fingerprints and index components content between single decoction and combined decoction was the largest. Except for peak 7 and peak 14, the difference of "peak area/sample weight" value of other characteristic peaks was statistically significant ( P<0.05), and the content difference of 8 index components was statistically significant ( P<0.05). Conclusion:There are differences in the chemical components of Inulae Flos - Haematitum medicinal pair for single decoction and mixed decoction.

Objective:To analyze the fetal ultrasonographic features of malformation of cortical development (MCD) during the second trimester, and explore and summarize the relevant diagnostic clues, so as to improve the ability of diagnosis and differential diagnosis of fetal MCD.Methods:A total of 313 fetuses with brain abnormalities suspected on ultrasound in Chengdu Women′s and Children′s Central Hospital from April 2018 to August 2022 were retrospectively analyzed. The fetuses were examined using MRI. The ultrasonographic characteristics of fetal MCD were summarized, and the fetal ultrasound and MRI imaging data were compared for fetal MCD.Results:Nineteen fetuses were diagnosed with MCD from 313 fetuses(6.07%, 19/313). Seventeen cases of MCD were identified by ultrasonography and subsequently validated by fetal MRI, including 6 cases of schizencephaly, 2 cases of hemimegalencephaly(HMEG), 3 cases of periventricular nodular heterotopia(PVNH), 3 cases of lissencephaly, 2 cases of microcephaly and 1 case of polymicrogyria(PMG). There were 3 cases with two concurrent MCD, 1 case of HMEG, and MRI increased the diagnosis of left parietal PMG; 1 case of lissencephaly, and MRI increased the diagnosis of PVNH. The other case was PMG, and MRI increased the diagnosis of lissencephaly. Two cases of fetal MCD were not indicated by ultrasonography, one of which was diagnosed as tuberous sclerosis and another one as schizencephaly by MRI, both due to ventriculomegaly.Conclusions:Various types of MCD in the second trimester have ultrasonographic characteristics. Abnormal lateral ventricles, intracranial structural changes such as sulci and gyrus can provide reliable ultrasound diagnostic clues for fetal MCD.

Objective:To study the inactivation effects of microwave on human adenovirus 2 (HAdV-2) in simulated infectied wastes, and to explore its molecular mechanism.Methods:25 μl of HAdV-2 virus suspension was dripped with medical disposable gloves, masks and cotton swabs to simulate infectied wastes, and irradiated under different microwave conditions: gloves and masks were irradiated for 30 s, 60 s, and 90 s at 300 W, 500 W, and 700 W, respectively. Cotton swabs irradiate 60 s, 90 s, 120 s at 500 W and 700 W respectively. Temperature changes were recorded, and the inactivation logarithmic values were calculated by the 50% endpoint method to evaluate the microwave inactivation effects, and the proliferation ability of the virus was detected by qPCR. The damage of Penton, Fiber, Hexon and E2 B genes was detected by PCR. The virus was treated with the highest temperature of 76 ℃ during microwave irradiation to study whether there was non-thermal effect during microwave disinfection. Results:After microwave irradiation of infectied waste, the temperature of masks and gloves carriers rises rapidly, with the highest temperature of 76 ℃. The temperature of the cotton swab carriers rose slowly, and the highest temperature is 65 ℃. The inactivation effect of microwave on HAdV-2 was positively correlated with microwave power and irradiation time. In the mask and glove group, microwave power of 700 W irradiated for 60 seconds, and the inactivation logarithm value could reach 3.0, In the cotton swab group, microwave power of 700 W irradiated for 120 seconds, and the inactivation logarithm value was still less than 3.0. This indicated that there were differences in the conditions for microwave inactivation of the virus in different carriers. The qPCR result showed that microwave irradiation could weak the proliferation ability of the virus. Microwave irradiation had no effect on the virus's Penton and Fiber genes, but caused some damage to the Hexon and E2 B genes. The inactivation effect of individual heat treatment on HAdV-2 was weaker than that of microwave irradiation, and there was no damage to the Hexon, Penton, Fiber, and E2 B genes. This indicated the presence of non thermal effects during the microwave inactivation process. Conclusions:Microwave irradiation can inactivate HAdV-2 in simulated infectied wastes through thermal and non-thermal effects, and its damage to viral DNA is one of the mechanisms of virus inactivation.

Objective:To study the ultrasonographic characteristics of embryos/fetuses with normal or abnormal central nervous system (CNS) from 7 to 13 +6 weeks of gestation using high resolution two-dimensional ultrasound combined with HD-live silhouette technology and provide a reference for early diagnosis of CNS abnormalities. Methods:Eighty normal embryos/fetuses during 7-13 +6 weeks and 41 fetuses with CNS malformations in early pregnancy during 11-13 +6 weeks were selected to observe the ultrasonographic features of embryos/fetuses with normal or abnormal CNS using transvaginal high resolution two-dimensional ultrasound and HD-live silhouette technology. Descriptive analysis was performed on the results. Results:From seven weeks of gestational age, high resolution two-dimensional ultrasound combined with HD-live silhouette technology can clearly and stereoscopically show the prosencephalon, mesencephalon and rhombencephalon. The rhombencephalon changed the most in the brain development of embryos. At nine weeks of gestation, cleared structures of pons curvature, the fourth ventricle and cisterna magna were observed. The developing cerebellum and the original Blake pouch cyst were seen at 10 weeks of gestation. From 11 to 13 +6 weeks, the most remarkable change was the choroid plexus of the fourth ventricle changed from perpendicular to parallel to the long axis of the neural tube. Of the 41 fetuses with CNS malformation, 16 (39.0%) were exencephaly, 11 (26.8%) were holoprosencephaly, five (12.2%) were encephalocele, four (9.7%) were anencephaly, three (7.3%) were fourth ventricle dilatation, and two (4.9%) were open spina bifida. Conclusions:High resolution two-dimensional ultrasound combined with HD-live silhouette technology can clearly and stereoscopically display the morphological changes in embryonic embryos/fetuses with development of normal CNS at 7-13 +6 weeks, which is helpful to better understand the origin of CNS embryonic abnormalities and provide diagnostic clues for the early detection of CNS abnormalities.

In February, 2019, a patient with a defect of open dorsal cartilage and bone in the first metatarsal head, including the defects of soft tissue, tendon and joint capsule, was treated in our department. After multiple debridement, the vascularised medial femoral condyle osteochondral chimeric tissue flap was transferred to repair the composite tissue defect in the metatarsal head at the second stage. After 18 months of follow-up, the patient felt no pain in the foot and walking, and there was no sign of lameness and discomfort at donor sites. The postoperative functional recovery was satisfactory.

Objective:To explore the effect of cupping therapy on regulating phlegm dampness constitution of elderly patients with hypertension in the community.Methods:From August to November in 2019, 120 elderly patients with phlegm dampness hypertension were randomly divided into control group and intervention group, 60 cases in each. The control group was given traditional Chinese medicine (TCM) health care in the community, and the intervention group was given cupping therapy intervention on this basis, to evaluate the changes of the scores of TCM phlegm wet body mass table, the total score reduction rate of TCM phlegm wet body mass, the conversion rate of TCM phlegm wet body mass, blood pressure, body mass index and waist circumference between the two groups before the intervention, 1 month, 2 months, 3 months after the intervention.Results:Finally, there were 51 cases in the intervention group and 57 cases in the control group. The TCM phlegm dampness constitution sub-scale and total scores of the comparison between groups at four different time points showed that except for the dimension of abdominal hypertrophy, the sub-scale and total scores of TCM phlegm-dampness constitution scale in the two groups were lower than before, and the differences were statistically significant ( F values were 3.450-94.995, P<0.05). The total score reduction rate of phlegm dampness constitution in the intervention group was 0.17 ± 0.10, higher than that in the control group (0.12 ± 0.09), and the difference was statistically significant ( t value was - 2.773, P < 0.05). The transformation rate of phlegm-dampness constitution was 47.1% (24/51) in the intervention group, which was higher than that in the control group (33.3%,19/57). The value of systolic blood pressure was lower in the intervention group [(135.10±2.64) mmHg,1 mmHg=0.133 kPa] than that in the control group [(138.88±2.42) mmHg] after 2 months of intervention, and the difference was statistically significant ( F value was 6.586, P<0.05). The value of diastolic blood pressure was lower in the intervention group [(80.75±3.03) mmHg] than that in the control group [(78.14±3.43) mmHg] after 3 months of intervention, and the difference was statistically significant ( F value was 6.758, P<0.05). Conclusions:On the basis of TCM physical nursing in the community, the effect of cupping therapy on reducing the score of phlegm and dampness physical fitness of elderly hypertension patients in the community, promoting the transformation of phlegm and dampness physical fitness of elderly hypertension patients in the community, and reducing the blood pressure level of elderly hypertension patients in the community is better than that of TCM physical nursing in the community, which is worth being promoted in the community.

Portal vein thrombosis is a common complication of liver cirrhosis. Based on the recent "Expert Consensus on the Management of Portal Vein Thrombosis in Liver Cirrhosis (2020, Shanghai)", we analyzed a series of differences in the field of portal vein thrombosis in liver cirrhosis and point out the complexities and challenges faced by clinical anticoagulation treatment, so as to provide a reference for further clinical exploration of the standardized management of portal vein thrombosis in liver cirrhosis.

Objective To summarize the prenatal ultrasonographic characteristics of anomalous origin of one pulmonary artery from the aorta( AOPA ) ,and describe the diagnostic and clinical outcomes of fetal AOPA . Methods Echocardiographic characteristics of 3 fetuses with AOPA were reviewed . The ultrasonographic features were comparatively analyzed with postpartum autopsy findings . The relevant literature were reviewed and the experience of prenatal diagnosis of AOPA were summarized . Results In 3 cases with AOPA ,2 cases were the proximal type and anomalous origin of right pulmonary artery from the aorta ,of them ,one was accompanied with coarctation of the aorta , the other was accompanied with aortopulmonary window . One case was the distal type and anomalous origin of left pulmonary artery from the left innominate aorta ,it was only associated with mirror right aortic arch and right ductus arteriosus . Ultrasound characteristics were no bifurcation in distal pulmonary artery ,main trunk of pulmonary artery extends directly to one branch ,the other branch originated from the ascending aorta or left innominate artery . Three cases were confirmed by postpartum autopsy . Conclusions There are some characteristic signs on ultrasonic features of AOPA . Prenatal ultrasound has important value for diagnosis of AOPA .