【Objective】 To study the changes of platelet components(PC), apheresis platelets (AP) and pooled platelet concentrates (PPC) production of 19 provincial blood centers before and during the COVID-19 epidemic. 【Methods】 The data related to the collection of AP and the preparation of PPC from 2016 to 2021 of 19 provincial blood centers was collected. The production of PC, AP and PPC during the four years before the epidemic (i.e. 2016-2019) and during the COVID-19 epidemic (i.e. 2020 and 2021) were calculated respectively, and the change of production was analyzed. 【Results】 The total production of PC in 19 blood centers steadily increased from 2016 to 2019, with a decrease of 4.16% in 2020 and an increase of 15.60% in 2021, exceeding the output before the COVID-19 epidemic. In 2020, the production of PC of 42.11% (8/19) blood centers decreased compared with 2019, while 94.74% (18/19) in 2021 increased compared with 2020. The changes of AP output was basically consistent with the trend of PC. The total production of PPC in 2017 and 2018 both doubled compared to the previous year, while decreased by 67.98% in 2019, increased by 30.38% in 2020 and decreased by 27.08% in 2021. 【Conclusion】 The total production of PC kept increasing steadily between 2016 and 2019, but decreased in 2020 under the COVID-19 epidemic, with some blood centers being significantly affected. In 2021, with the strong support from government and various measures by blood centers, the total production of PC increased.

Objective:To investigate the application value of mixed reality technology in surgical conversation of laparoscopy radical resection of gastric cancer.Methods:The prospective randomized controlled study was conducted. There were 80 family members of patients with gastric cancer who were admitted to Nanfang Hospital of Southern Medical University from June 2021 to December 2022 being selected as subjects. All patients underwent laparoscopic radical resection of gastric cancer. Based on random number table, all subjects were allocated into the control group and the experiment group. Subjects in the control group performed routine surgical conversation and subjects in the experiment group performed surgical conversation based on mixed reality technology. Observation indicators: (1) baseline data of the subjects; (2) anxiety assessment of the subjects. Measurement data with normal distribution were represented as Mean± SD, and the independent sample t test was used for inter-group comparison. Repeated measurement data were analyzed using the repeated ANOVA. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test. Comparison of ordinal data was conducted using the Wilcoxon rank sum test. Results:(1) Baseline data of the subjects. A total of 80 subjects were selected for eligibility, including 40 subjects in the control group and 40 subjects in the experi-ment group. There were 44 males and 36 females, aged (40±9)years. The gender (male, female), age, education background (primary school education, middle school education, high school education, junior college education, undergraduate education, postgraduate education) were 23, 17, (39±9)years, 1, 3, 9, 16, 9, 2 in subjects of the control group, versus 25, 15, (42±10)years, 0, 8, 6, 11, 14, 1 in subjects of the experiment group, showing no significant difference in the above indicators between the two groups ( χ2=0.20, t=?1.64, Z=?0.10, P>0.05). (2) Anxiety assessment of the subjects. The scores of self-rating Anxiety Scale (SAS) and Hospital Anxiety Scale (HADS) before surgical conversation, after surgical conversation, after surgery were 41±10 and 26±5, 49±11 and 32±3, 40±13 and 15±8 in subjects of the control group, versus 44±9 and 23±3, 66±16 and 28±6, 34±14 and 8±3 in subjects of the experiment group, showing significant differences in the above indicators between the two groups ( FSAS组间=8.83, FSAS时间=40.41, FSAS交互=12.21, FHADS组间=32.42, FHADS时间=321.28, FHADS交互=6.15, P<0.05). Conclusion:Compared with traditional surgical conversation, mixed reality technology based surgical conversation can relieve the postoperative conxiety of subjects.

Objective The aim of this study was to investigate the effects of general practice mode combined with duloxetine on psychological status,sleep quality and serum inflammatory cytokines in patients with Fibromyalgia Syndrome(FMS).Methods A total of 105 FMS patients in Chengde Central Hospital from January 2019 to December 2021 were divided into the combined group(53 cases)and the control group(52 cases)by the random number table method.The two groups were treated with general practice mode combined with duloxetine or duloxetine alone.The single course of treatment lasted for 4 weeks.Their efficacy and safety were evaluated after 2 courses of intervention.Visual analogue scale(VAS),Hamilton Anxiety assessment scale(HAMA),Hamilton Depression Scale(HAMD)and Pittsburgh Sleep Quality Index(PSQI)were performed before and after treatment.The pain,psychological status and sleep quality of the patients were evaluated.Blood samples were taken to measure the serum levels of tumor necrosis factor-α(TNF-α),interleukin-1(IL-1)and IL-6 before and after treatment.Results The total effective rate in the study group was 96.23%,which was higher than that in the control group(82.69%,P<0.05).Compared with those before treatment,VAS,HAMA,HAMD and PSQI scores,serum TNF-α,IL-1 and IL-6 levels in the two groups were all decreased after treatment,and those in the study group were lower than those in the control group(P<0.05).There was no statistically significant difference in the incidence of adverse reactions between two groups(7.55%vs.19.23%,P>0.05).Conclusion General practice mode combined with duloxetine was safe and effective in the treatment of FMS,which could significantly relieve anxiety and depression of patients,improve their sleep quality,and reduce the level of serum inflammatory cytokines.

AIM: To study the protective effect of edaravone on renal injury induced by chronic intermittent hypoxia and its effect on Caspase-1 mediated pyroptosis signaling pathway in rats. METHODS: Twenty four SPF male SD rats were randomly divided into normal control group, intermittent hypoxia group, intermittent hypoxia + normal saline group and intermittent hypoxia + edaravone group, with 6 rats in each group. The four groups of rats were placed in the closed feeding chamber for modeling. The oxygen concentration in the NC group was maintained at about 21%; the IH group, IH + NS group and IH + EDA group were given regular input of pure oxygen, pure nitrogen and compressed air to form anoxic-reoxygenation cycle (60 s hypoxic period + 60 s reoxygenation period). During the hypoxic period, the oxygen concentration in the chamber was reduced to 6%-7%, and the rats in the IH + EDA group were intraperitoneally injected with edaravone at a dose of 5 mg/kg per day before modeling, while the rats in the IH + NS group were intraperitoneally injected with normal saline at the same dose per day. After 8 weeks of modeling, blood and kidney tissue samples were collected to measure the levels of Crea and Urea in each group. The pathological changes and fibrosis degree of kidney were observed under light microscope after HE and Masson staining. The content of malondialdehyde (MDA) and activity of superoxide dismutase (SOD) were determined by chemical method. The expression levels of NLRP3, Caspase-1 and IL-1β in renal tissues were determined by immunohistochemical staining. The expression levels of caspase-1 and IL-1β in renal tissues were determined by Western blot. GSDMD and IL-18 mRNA were detected by RT-PCR. RESULTS: After intermittent hypoxia exposure, serum Crea and Urea were increased significantly (P < 0.01), renal tubules were damaged by pathology, collagen fiber deposition occurred in balloon space of renal units, MDA content was increased and SOD activity was decreased (P < 0.01). Caspase-1, NLRP3, IL-1β protein expression increased (P < 0.01 or P < 0.05), GSDMD mRNA and IL-18 mRNA amplification increased (P < 0.01); After Edaravone intervention, the above indexes showed a reverse trend compared with that after intermittent hypoxia exposure, and the pathological damage of kidney was reduced (P < 0.01 or P < 0.05). CONCLUSION: Chronic intermittent hypoxia may mediate kidney injury through oxidative stress activation of caspase-1 involved in the cell pyroptosis signaling pathway, while edaravone may inhibit the activation of pyroptosis signaling pathway by scavenging oxygen free radicals and down-regulating the level of oxidative stress in the body, thus playing a protective role in kidney.

【Objective】 To investigate the establishment of multi-center haemovigilance (HV) and the monitoring of adverse reactions to blood donation (ARBD), in order to provide basis for the management of blood donors. 【Methods】 The operation of HV was investigated by questionnaire. The total number of blood donations (including plateletpheresis) and ARBD cases occurred in each blood center from 2014 to 2018 were analyzed. 【Results】 Among the 24 blood centers in this survey, only nine got HV operated. The incidence of ARBD of 19 blood centers that fulfilled the questionnaire was in the range of (0.003~1.151) %. The change trend of number and incidence of ARBD cases were indeterminate. 【Conclusion】 Most blood centers did not got HV established. The incidence of ARBD varied greatly and was indeterminate. The application of HV should be further improved to strengthen ARBD management.

Objective To investigate the value of dual-exponential model intravoxel incoherent motion (IVIM) DWI and conventional single-exponential DWI model based on readout segmentation echo-planar (RS-EP) sequence in differential diagnosis of simple rhinitis and chronic hypertrophic rhinitis.Methods Totally,20 patients confirmed by pathology were enrolled in this study and all of them underwent IVIM DWI and conventional DWI.The pure diffusion (D),pseudo-diffusion (D*),perfusion fraction (f) and conventional ADC maps were obtained respectively.The quantitative parameters of anterior,middle,posterior regions of inferior nasal concha mucosa were measured.Comparative statistical analysis was performed for comparing two groups and three regions.ROC analysis was conducted to assess the diagnostic performance.Results The ADC and D values in the simple rhinitis group were (1 938.84 ± 170.46) × 10-6 mm2/s,and (1 698.91 ±145.17) × 10-6 mm2/s.In chronic hypertrophic rhinitis group,the ADC value was (1 681.76± 132.21) × 10-6 mm2/s,and the D value was (1 439.39 ± 101.26)× 10-6 mm2/s.There were significant differences between the two groups (both P＜0.05).No significant differences were found for D* and f values between two groups (both P＞0.05).ADC values increased significantly from anterior region,middle region to posterior region (all P＜0.05).No significant difference was found for D* value among three regions (P＞0.05).ROC analysis demonstrated a higher area under the curve (AUC) for D value than ADC value (0.932±0.044 vs 0.896±0.058) with sensitivity,specificity,accuracy,positive and negative predictive values of 92.31％,93.75％,90.00％,93.75％,85.71％.Conclusion Based on RS-EP sequence,both IVIM DWI model and conventional single-exponential DWI model demonstrated great value in differential diagnosis of simple rhinitis and chronic hypertrophic rhinitis,and the IVIM-derived D value exhibited a higher diagnostic performance than the conventional ADC value.

Objective To study the difference ofLeonurus japonicus germplasm resources and provide good materials for breeding.Methods Totally 20 wildLeonurus japonicus germplasm resources from different places of China were collected. Experiment was conducted in homogeneous garden in Quzhou City of Zhejiang Province. Phenological phase, cold endurance and habitat adaptability were observed; the plant height, fresh weight and dry weight in early flowering were measured; the contents of stachydrine hydrochloride and leonurine hydrochloride were determined in early flowering and out-of-season cultivation.Results Considering the habitat adaptability, dry plant weight in early flowering, the contents of stachydrine hydrochloride and leonurine hydrochloride separately in early flowering and out-of-season cultivation, it was believed that the germplasms from Linbao County, Sheqi County in Henan Province and Guidong County in Hunan Province were better, in which Linbao germplasm was the best: the dry plant weight was 30.6 g, the content of stachydrine hydrochloride and leonurine hydrochloride were 1.31% and 0.19% respectively in early flowering, and were 3.44% and 0.37% respectively under anti-season cultivation, and it can be well adapted in Zhejiang Province.Conclusion The germplasm ofLeonurus japonicas from Lingbao can be the best materials for breeding.

Objective To analyze the risk factors for traumatic cerebral venous sinus occlusion (CVSO)and to investigate the strategies of early diagnosis of traumatic CVSO. Methods The clinical data of 212 patients with moderate to severe closed traumatic brain injury from January 2012 to December 2015 were analyzed retrospectively. Logistic regression analysis was used to evaluate the risk factors for traumatic CVSO. Results Of the 212 patients with traumatic brain injury, 16.5%(35/212) patients had CVSO. Ten patients had CVSO of thrombotic type (typeⅠ), 16 patients had CVSO of compression type (typeⅡ), and 9 patients had CVSO of mixed type (typeⅢ). Logistic regression analysis showed that skull fracture (OR = 8.141; 95%CI: 3.224-20.840) and epidural hematoma of crossing venous sinus (OR = 3.179; 95%CI: 1.470-7.037) were the risk factors for CVSO, and the former was more significantly correlated with CVSO. Female gender was the risk factor for CVSO typeⅠ(OR =10.425; 95%CI: 1.831-30.053), epidural hematoma of crossing venous sinus was the risk factor for CVSO typeⅡ(OR = 5.766; 95%CI: 1.885-18.197), and skull fracture, epidural hematoma of crossing venous sinus, and the previous history of vein thrombosis was the risk factors for CVSO type Ⅲ(OR =18.005, 4.596, 11.394; 95%CI: 2.021-58.836, 1.144-19.525, 1.436-46.558). Conclusions In the early diagnosis of traumatic CVSO, the crossing venous sinus fracture line and epidural hematoma should be given attention. Attention should be paid to the history of venous thrombosis. MR venography and CT venography contributes to early diagnosis of CVSO.

Objective To investigate the awareness of osteoporosis and its influential factors in middle-aged and older people. Methods By using self-designed questionnaire, 354 middle-aged and old people were investigated as to their awarness of osteoporosis in Chajiao street community in Guangzhou. Among them, 58 people were measured the bone density in the calcaneal bone by Ultrasound. Results The average score of the questionnaire was 9.46 ± 5.13, and the accuracy was 39.4%. In the diagnosis and treatment, the accuracy was just 17.8%. The diet (the accuracy in 54%) and sport (the accuracy in 50.3%) were good. The statistical analyses showed the linear relationship between the T value of bone density and the age (P = 0.021), between the T value and the score (P = 0.047). Wilcoxon rank sum test found that the T value between female and male was significantly different (Z = -3.749, P < 0.000). With multiple linear regression analysis, the T value had a linear correlation with the score (F = 4.224, P = 0.045) positively. Conclusions Currently, the awareness of osteoporosis in the middle-aged and old people was inadequate. To better prevent osteoporosis, the propogation of knowledge and guidance provided by clinicians in osteoporosis should be improved necessarily and emergently.

Objective To investigate the effect of different pore sized hydroxyapatite for promoting bone vascularization in tissue engineering.Methods Male Wistar rats were randomly divided into three groups,named group A,B and C,which were im-planted hydroxyapatite bioceramics compositing 4 μg bone morphogenetic protein with different aperture of 200 -300,350 -450, 500-600 μm in the back subcutaneously.The size of each block was 5 mm×5 mm×1 mm in a weight about of 40.0 mg.After im-plantation,the animals were killed and the implants and the surrounding tissue were taken out at the first,second,third and forth week respectively.HE staining of histological analysis was used to detect the situation of local neovascularization.Results There was significant difference between second and third week in group A.Comparing the area of vascularization at different time points in group B and group C,there were significant difference in the comparison of intragroup (P <0.05 ).During the first week after surgery,there was only group C that had the area of vascularization.During the second and forth week after operation,the area of vascularization in group B and group C were significant higher than group A (P <0.05).The C group showed a great deal of new-born blood vessels and clear formation of bone trabeculae.Conclusion The hydroxyapatite bioceramics of 500-600 μm could better promote vascalarization of tissue engineering in bone.