OBJECTIVE To prepare a self-microemulsifying drug delivery system(SMEDDS) for the oral administration of nebivolol hydrochloride(NBH) and to conduct in vitro evaluation. METHODS The solubility of NBH was determined using various oil phases, surfactants, and co-surfactants. The composition of the blank self-microemulsifying formulation was determined using pseudo-ternary phase diagrams. A centralcomposite design-response surface method was employed to screen and optimize the formulation variables, and an excess amount of NBH raw material was incorporated to determine the drug loading capacity. RESULTS The optimized composition of the NBH-SMEDDS formulation consisted of medium-chain glycerides, capryl caproyl macrogol glycerides, and 2-(2-ethoxyethoxy) ethyl acetate at a ratio of 20∶48∶32, with a drug loading capacity of 20.05 mg. The particle size, self-emulsification time, and particle size distribution range of the formulation were in agreement with the predicted values. Dissolution testing demonstrated that the overall dissolution trend of NBH-SMEDDS in the medium was higher than that of NBH powder and NBH ordinary tablet. The stability of NBH-SMEDDS was found to be satisfactory under accelerated conditions for 1, 2, and 3 months. CONCLUSION The SMEDDS shows potential for enhancing the in vitro dissolution of NBH and demonstrates good stability.

OBJECTIVE To solve the problem of insolubility of itraconazole, improve its dissolution in vitro, and provide a reference for further industrial scale-up of the itraconazole multiparticle system. METHODS Itraconazole multiparticle system pellets were dissolved in an organic solvent and prepared in a fluidized bed by bottom spraying. Itraconazole and hydroxypropyl methylcellulose were sprayed onto the surface of the sucrose pellet core to form a uniform solid dispersion. The preparation parameters of the fluidized bed bottom spray coating were investigated by single factor method. The mass ratio of drug to carrier and core weight gain of the itraconazole multiparticle system were optimized by central composite design and response surface methodology with accumulative dissolution rate, application efficiency and adhesion rate as response values. Samples were prepared to verify the optimized prescription, the microscopic hierarchical structure of the itraconazole multiparticle system was observed by scanning electron microscope, and the solid dispersion in the itraconazole multiparticle system pellets was characterized by differential scanning calorimetry(DSC) and X-ray diffraction(XRD). The dissolution curves of itraconazole pellets and the physical mixture in 0.1 mol·L−1 HCl dissolution medium were compared to verify the solubilization effect. RESULTS Single factor method was used to determine the bottom spray coating parameters of the fluidized bed. The pumping speed was set as 3.0−5.0 mL·min−1, the atomization pressure was set as 1.5 bar, the inlet air volume was set as 110 m3·h−1, and the material temperature was set as 35 ℃. According to the central composite design and response surface methodology, the mass ratio of drug to carrier of the optimized prescription was 1∶1.5 and the core weight of the pill was 75%, and the response values reached the expected value. The result of scanning electron microscopy showed that the diameter of the itraconazole multiparticle system pellet was about 910 µm, the diameter of the sucrose pellet core was about 570 µm, the thickness of the drug loading layer was about 110 µm, and the thickness of encapsulation layer was about 11 µm. The results of DSC and XRD showed that itraconazole formed a uniform solid dispersion in the itraconazole multiparticle system pellets, which was amorphous. In the dissolution medium of 0.1 mol·L−1 HCl, the accumulative dissolution rate of the multiparticle system after 90 min was about 10 times that of the physical mixture, which showed that the solubilization effect was remarkable. CONCLUSION The dissolution of itraconazole in vitro can be significantly improved by processing itraconazole into pellets with multiparticle system and forming solid dispersion.

Objective:To explore the advantages of minimally invasive internal fixation assisted by an orthopedic robot in the treatment of tibial plateau fractures of Schatzker types Ⅱ and Ⅲ that can be indirectly reduced.Methods:A retrospective study was conducted of the 18 patients who had been treated for tibial plateau fractures of Schatzker types Ⅱ and Ⅲ at Department of Orthopaedics, The Fourth Hospital of Wuhan from December 2019 to December 2021. They were 12 males and 6 females with an age of (45.2±9.6) years. All fractures were closed. Of them, 6 were complicated with an avulsion fracture at the insertion point of the anterior cruciate ligament, 1 with tear of the medial collateral ligament, and 8 with tear of the lateral meniscus. All patients were treated with minimally invasive internal fixation using the "fence" screw technique after indirect reduction assisted by an orthopedic surgical robot. Those combined with avulsion fracture of the anterior cruciate ligament and meniscus tear underwent one-stage arthroscopic surgery, while those combined with tear of the medial collateral ligament underwent one-stage open repair. The fracture reduction was evaluated according to the Rasmussen radiological scoring system, and the knee joint function evaluated using the American Hospital for Special Surgery (HSS) scoring system.Results:All the 18 patients were fully followed up for (10.6±1.9) months. The X-ray films immediately after surgery showed good fracture reduction. The fractures healed after (11.3±1.2) weeks. At 6 months after surgery, the Rasmussen knee score was (16.8±1.0) points, giving 5 excellent and 13 good cases; the HSS score was (93.2±3.0) points, giving 17 excellent and 1 good cases. By the last follow-up, no serious complications occurred, such as common peroneal nerve injury, popliteal vascular injury, postoperative infection, or internal fixation failure.Conclusion:Since minimally invasive internal fixation assisted by an orthopedic robot can lead to fine clinical efficacy for tibial plateau fractures of Schatzker types Ⅱ and Ⅲ, this technique can be widely applied in clinical practice.

Objective:To investigate the diagnosis and strategy of individualized functional rhinoplasty based on the overall evaluation of the nasal cavity as a integration.Methods:A prospective study was carried out in the patients who underwent endoscopic functional rhinoplasty at the Department of Otorhinolaryngology, the First Affiliated Hospital of Chongqing Medical University from February 2018 to August 2021. The overall evaluation of the internal and external structure and function of the nasal cavity was performed before surgery, and the individualized surgical strategies were developed. According to the surgical strategy, nasal septum correction, inferior turbinate ablation, inferior turbinate fracture displacement, inferior turbinate submucous resection, dorsal extended cartilage graft, crooked nose correction, prosthesis or autologous cartilage implantation, hump reduction and osteotomy were performed to adjust the nasal function and aesthetics. Internal nasal valve (INV) angle, INV collapse grade, INV cross-sectional area, and external nasal valve effectiveness (ENVE) index were used to evaluate the structure of nasal valve area. Nasal obstruction symptom assessment (NOSE) scale and nasal resistance [including total nasal resistance (RT), nasal resistance differential ratio (R 1r)] was used to evaluate nasal ventilation function. Facial clinimetric evaluation questionnaire rhinoplasty module (FACE-Q RM), rhinoplasty outcome evaluation (ROE) scale, external nasal subunit measurement was used to evaluate nasal appearance, and self-rating depression scale (SDS) and self-rating anxiety scale (SAS) was used to evaluate psychological status. Finally, the correlation between patient satisfaction and subjective and objective parameters were analyzed. The data before and after operation were compared by paired t-test. Correlation was tested by Pearson analysis. Results:A total of 50 patients were included, including 18 males and 32 females, ranging in age from 23 to 52 years, mean age 35.7 years. All patients had symptoms of nasal congestion, of which 28 cases with crooked nose deformity, 12 cases with nasal valve stenosis, 6 cases with saddle nose deformity, and 4 cases with hump nose. Compared with preoperative, postoperative INV angle was significantly increased, INV collapse grade was decreased, INV cross-sectional area was increased, ENVE index was increased ( P<0.05). After operation, the NOSE score decreased, and nasal resistance showed that RT and R 1r decreased, indicating that nasal congestion symptoms were relieved significantly ( P<0.05). The postoperative FACE-Q RM and ROE scores increased, indicating that patients’ nasal appearance satisfaction increased ( P<0.05), external nasal subunit measurement showed that the upper nasal alar width and lower nasal alar angle were reduced ( P<0.05), the measured value of residual structure has no significant change. Postoperative SDS and SAS scores were significantly lower than preoperative ones, and the difference was statistically significant ( P<0.05).Overall satisfaction was improved( P<0.05). Pearson correlation analysis showed that patient satisfaction was positively correlated with INV angle, INV cross-sectional area, ENVE index, and subjective nasal shape score (FACE-Q RM, ROE), and negatively correlated with INV collapse grade, NOSE score, and nasal resistance measurement, but had no correlation with external nasal subunit measurement. Conclusion:Combined with the overall evaluation of nasal structure, nasal ventilation function and external nasal aesthetics, it is beneficial to develop the diagnosis and treatment strategy of individualized functional rhinoplasty, so as to improve patient satisfaction.

Objective:To investigate the diagnosis and strategy of individualized functional rhinoplasty based on the overall evaluation of the nasal cavity as a integration.Methods:A prospective study was carried out in the patients who underwent endoscopic functional rhinoplasty at the Department of Otorhinolaryngology, the First Affiliated Hospital of Chongqing Medical University from February 2018 to August 2021. The overall evaluation of the internal and external structure and function of the nasal cavity was performed before surgery, and the individualized surgical strategies were developed. According to the surgical strategy, nasal septum correction, inferior turbinate ablation, inferior turbinate fracture displacement, inferior turbinate submucous resection, dorsal extended cartilage graft, crooked nose correction, prosthesis or autologous cartilage implantation, hump reduction and osteotomy were performed to adjust the nasal function and aesthetics. Internal nasal valve (INV) angle, INV collapse grade, INV cross-sectional area, and external nasal valve effectiveness (ENVE) index were used to evaluate the structure of nasal valve area. Nasal obstruction symptom assessment (NOSE) scale and nasal resistance [including total nasal resistance (RT), nasal resistance differential ratio (R 1r)] was used to evaluate nasal ventilation function. Facial clinimetric evaluation questionnaire rhinoplasty module (FACE-Q RM), rhinoplasty outcome evaluation (ROE) scale, external nasal subunit measurement was used to evaluate nasal appearance, and self-rating depression scale (SDS) and self-rating anxiety scale (SAS) was used to evaluate psychological status. Finally, the correlation between patient satisfaction and subjective and objective parameters were analyzed. The data before and after operation were compared by paired t-test. Correlation was tested by Pearson analysis. Results:A total of 50 patients were included, including 18 males and 32 females, ranging in age from 23 to 52 years, mean age 35.7 years. All patients had symptoms of nasal congestion, of which 28 cases with crooked nose deformity, 12 cases with nasal valve stenosis, 6 cases with saddle nose deformity, and 4 cases with hump nose. Compared with preoperative, postoperative INV angle was significantly increased, INV collapse grade was decreased, INV cross-sectional area was increased, ENVE index was increased ( P<0.05). After operation, the NOSE score decreased, and nasal resistance showed that RT and R 1r decreased, indicating that nasal congestion symptoms were relieved significantly ( P<0.05). The postoperative FACE-Q RM and ROE scores increased, indicating that patients’ nasal appearance satisfaction increased ( P<0.05), external nasal subunit measurement showed that the upper nasal alar width and lower nasal alar angle were reduced ( P<0.05), the measured value of residual structure has no significant change. Postoperative SDS and SAS scores were significantly lower than preoperative ones, and the difference was statistically significant ( P<0.05).Overall satisfaction was improved( P<0.05). Pearson correlation analysis showed that patient satisfaction was positively correlated with INV angle, INV cross-sectional area, ENVE index, and subjective nasal shape score (FACE-Q RM, ROE), and negatively correlated with INV collapse grade, NOSE score, and nasal resistance measurement, but had no correlation with external nasal subunit measurement. Conclusion:Combined with the overall evaluation of nasal structure, nasal ventilation function and external nasal aesthetics, it is beneficial to develop the diagnosis and treatment strategy of individualized functional rhinoplasty, so as to improve patient satisfaction.

Objective:To discuss the effect of parthenolide(PTL)on the apoptosis of the chondrocytes under mechanical stretch stress by regulating the expression of piezo type mechanosensitive ion channel component 1(Piezo1),and to clarify the related mechanism.Methods:The chondrocytes were divided into 0%,5%,10%,15%,and 20%stretch groups according to the stretch variable.Additionally,the chondrocytes were divided into control group,20%stretch group,20%stretch+5 μmol·L-1 PTL group,20%stretch+10 μmol·L-1 PTL group,and 20%stretch+20 μmol·L-1 PTL group.The Piezo1 short hairpin RNA(shRNA)interference lentivirus(sh-Piezo1)or shRNA-NC lentivirus were used to infect the chondrocytes,and the chondrocytes were divided into sh-Piezo1 group and sh-NC group,and also set up blank control group.The chondrocytes were also devided into 20%stretch group,20%stretch+PTL group,20%stretch+sh-Piezo1 group,and 20%stretch+sh-Piezo1+PTL group.Hoechst 33258 fluorescence staining was used to observe the morphology of the nuclear in various groups;flow cytometry was used to detect the apoptotic rates of the cells in various groups;spectrophotometry was used to detect the cysteinyl aspartate specific proteinase(Caspase)-3 activities in the cells in various groups;CCK-8 method was used to detect the proliferation rates of the cells in various groups;Fluo-4/AM fluorescent probe method was used to detect the calicium ion(Ca2+)levels in the cells in various groups;real-time fluorescence quantitative PCR(RT-qPCR)method was used to detect the expression levels of Piezo1 mRNA in the cells in various groups;Western blotting method was used to detect the expression levels of Piezo1 protein in the cells in various groups.Results:The Hoechst 33258 fluorescence staining resuts showed that as the increasing of stretch,the number of the chondrocytes with fragmented and densely stained nuclei in 0%,5%,10%,15%,and 20%stretch groups were gradually increased.The flow cytometry results showed that compared with 0%stretch group,the apoptotic rates of the chondrocytes in 5%,10%,15%,and 20%stretch groups were significantly increased(P<0.01);compared with control group,the apoptotic rate of the chondrocytes in 20%stretch group was significantly increased(P<0.05);compared with 20%stretch group,the apoptotic rates of the chondrocytes in 20%stretch+5 μmol·L-1 PTL group,20%stretch+10 μmol·L-1 PTL group,and 20%stretch+20 μmol·L-1 PTL group were significantly decreased(P<0.05);compared with 20%stretch group,the apoptotic rates of chondrocytes in 20%stretch+PTL group and 20%stretch+sh-Piezo1 group were significantly decreased(P<0.05).The spectrophotometry results showed that compared with 0%stretch group,the Caspase-3 activities in the chondrocytes in 5%,10%,15%,and 20%stretch groups were significantly increased(P<0.01);compared with control group,the Caspase-3 activity in the chondrocytes in 20%stretch group was significantly increased(P<0.05);compared with 20%stretch group,the Caspase-3 activities in the chondrocytes in 20%stretch+5 μmol·L-1 PTL group,20%stretch+10 μmol·L-1 PTL group,and 20%stretch+20 μmol·L-1 PTL group were significantly decreased(P<0.05).Compared with 20%stretch group,the Caspase-3 activities in the chondrocytes in 20%stretch+PTL group and 20%stretch+sh-Piezo1 group were significantly decreased(P<0.05).The CCK-8 method results showed that compared with 0 μmol·L-1 PTL group,the proliferation rates of the chondrocytes in 40.00,80.00,and 160.00 μmol·L-1 PTL groups were significantly decreased(P<0.05),indicating that 20.00 μmol·L-1 PTL was the maximum non-toxic concentration.The Fluo-4/AM fluorescent probe method results showed that compared with control group,the Ca2+level in the chondrocytes in 20%stretch group was significantly increased(P<0.05);compared with 20%stretch group,the Ca2+levels in the chondrocytes in 20%stretch+5 μmol·L-1 PTL group,20%stretch+10 μmol·L-1 PTL group,and 20%stretch+20 μmol·L-1 PTL group were significantly decreased(P<0.05);compared with 20%stretch group,the Ca2+levels in the chondrocytes in 20%stretch+PTL group and 20%stretch+sh-Piezo1 group were significantly decreased(P<0.05).The RT-qPCR results showed that compared with blank control group and sh-NC group,the expression level of Piezo1 mRNA in the chondrocytes in sh-Piezo1 group was significantly decreased(P<0.05).The Western blotting results showed that compared with control group,the expression levels of Piezo1 protein in the chondrocytes in 20%stretch group was significantly increased(P<0.05);compared with 20%stretch group,the expression levels of Piezo1 protein in the chondrocytes in 20%stretch+5 μmol·L-1 PTL group,20%stretch+10 μmol·L-1 PTL group,and 20%stretch+20 μmol·L-1 PTL group were significantly decreased(P<0.05);compared with blank control group and sh-NC group,the expression level of Piezo1 protein in the chondrocytes in sh-Piezo1 group was significantly decreased(P<0.05).Conclusion:PTL can inhibit the apoptosis of the chondrocyte induced by high-intensity cyclic mechanical stretch stress,and its mechanism may be related to inhibiting the Piezo1-mediated Ca2+influx-induced apoptosis.

Objective:To investigate the correlation of relative cross-sectional area of lumbar paravertebral muscle and psoas with lumbar curvature and its clinical significance.Methods:This study was conducted as a retrospective cross-sectional study. Among the patients treated at the Department of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine from January to April 2023, 107 middle-aged and young patients with changes in lumbar physiological curvature or no apparent abnormalities were included in this study based on MRI findings. The relative cross-sectional area (RCSA) values of the left and right paravertebral muscles and psoas were measured at the lower margin of the L3 vertebral body and at the L3/L4, L4/L5, and L5/S1 intervertebral discs. Furthermore, the correlation between these RCSA values and lumbar curvature was analyzed.Results:The 107 patients were (30.51 ± 4.64) years old, and the proportion of females accounted for 71.96%. There were differences in RCSA between the lower margin of L3, L3/L4, L4/L5, and L5/S1 intervertebral discs (left psoas F = 30.21, P < 0.001; right psoas F = 31.63, P < 0.001; left paravertebral muscle F = 31.04, P < 0.001; right paravertebral muscle F = 26.55, P < 0.001). From L3 to S1, the RCSA of the psoas increased, while the RCSA of the paravertebral muscle decreased. The RCSA values of the total paravertebral muscle/RCSA values of the total psoas major muscle were positively correlated with lumbar curvature at the lower margin of the L3 vertebral body ( r = 0.40, P < 0.001). This correlation could be seen at both L3/L4 ( r = 0.31, P = 0.001) and L4/L5 ( r = 0.24, P = 0.012). However, after considering the influence of left and right muscle groups on lumbar curvature, there was no correlation between the muscle cross-sectional area at the L5/S1 disc position and lumbar curvature ( P > 0.05). Nevertheless, there was still a correlation between the muscle cross-sectional area at other lumbar segments ( P < 0.05). Conclusion:An increase in the RCSA of the psoas relative to the paraspinal muscle may lead to straightening of the lumbar spine curvature, whereas an increase in the RCSA of the paraspinal muscle relative to the psoas may result in an increase in lumbar spine curvature. Improving the quality of the paraspinal muscle may restore the physiological curvature of the lumbar spine, which holds clinical application value.

Objective:To investigate the effect of lattice superpulsed CO 2 laser combined with asiaticoside cream ointment on the repair of facial depression acne scar. Methods:A total of 124 patients with facial acne depression scar who visited the dermatology department of Zhengzhou People's Hospital from January 2019 to December 2020 were selected as subjects, including 60 males and 64 females, aged 16-38 (27.2±4.8) years. According to the random number table, the patients were divided into the control group ( n=62) and observation group ( n=62). The control group were treated with lattice superpulsed CO 2 laser, and the observation group were treated with lattice superpulsed CO 2 laser combined with asiaticoside cream ointment for 6 months. The therapeutic efficacy, Vancouver scar scale (VSS), ECCA score, skin barrier related indicators, pain duration, healing time, delayed duration and adverse reactions were compared between the two groups. Results:The total effective rate in the observation group (91.94%) was significantly higher than that in the control group (77.42%) (χ 2=5.04, P<0.05), pain duration, scab formation time, scab removal time, complete healing time, delay period and the incidence of adverse reactions were significantly lower than those in the control group [(2.76±1.04) h, (2.64±1.03) d, (6.18±1.47) d, (8.87±1.75) d, (7.89±2.16) d, 3.23% vs. (4.11±1.29) h, (3.87±1.14) d, (7.24±1.56) d, (11.05±1.93) d, (10.52±3.01) d, 12.90%, detection value = 6.42, 6.30, 3.90, 6.59, 5.59, 3.92, P<0.05]. After treatment, the VSS scale and ECCA score in the observation group were significantly lower than those in the control group (5.71±1.06, 39.12±10.64 vs. 6.42±1.17, 42.61±11.51, t=3.54, 2.26, P<0.05). After treatment, the water content of cuticle in the observation group was significantly higher than that in the control group [(40.02±14.14) vs. (34.35±11.50) AU, t=2.45, P<0.05], and transepidermal water loss, lactic acid stimulation test score and cuticle protein content were significantly lower than those in the control group [(19.07±5.70) g/(h·m 2), (2.62±1.27) score, (30.12±10.63) μg vs. (21.39±6.51) g/(h·m 2), (3.25±1.89) score, (35.10±11.19) μg, t=2.11, 2.18, 2.54, P<0.05]. Conclusions:Lattice superpulsed CO 2 laser combined with asiaticoside cream ointmentis can effectively treat acne scar and reduce adverse reactions, and the curative effect is better than single laser treatment.

Objective:To explore the clinical efficacy of robot guided balloon tibial osteoplasty for the treatment of Schatzker II and III tibial plateau fractures.Methods:A retrospective analysis was conducted on the data of 59 patients admitted from January 2017 to December 2022. According to the surgical method, they were divided into two groups: robot guided percutaneous balloon tibial osteoplasty with "Jail" screw fixation group (study group) and open reduction and internal fixation group (control group). There were 28 cases in the study group, including 13 males and 15 females, with an average age of 44.21±9.70 years. In the study group, 8 cases were diagnosed of Schatzker II and 20 cases of Schatzker III. There were 31 cases in the control group, including 16 males and 15 females, with an average age 47.94±13.73 years. In the control group 7 cases were diagnosed of Schatzker II and 24 cases of Schatzker III. Between the two groups, demographics, surgical challenges and outcomes were all compared, including age, fracture classification, fracture collapse volume, surgical time, intraoperative bone graft volume, incision length, postoperative drainage volume, length of stay, fracture reduction quality (proportion of collapse area reduction volume evaluated by postoperative CT, Rasmussen radiology score), knee joint hospital for special surgery (HSS) score at 6 months after surgery, pain visual analogue scale (VAS) scores at before and 3 days after surgery and the final follow-up, complications.Results:All the patients were followed up for 116.92±6.08 months. The surgical time was 88.50±21.32 min in the study group, and 65.16±18.10 min in the control group with significant difference ( t=4.55, P<0.001). Between the study group and the control group, the intraoperative bone graft volume (3.04±1.15 cm 3vs. 5.87±2.03 cm 3), incision length (3.34±1.02 cm vs. 17.65±2.33 cm), postoperative drainage volume (13.04±19.45 ml vs. 85.16±41.54 ml), and length of hospital stay (11.64±3.07 d vs. 18.77±4.78 d) were all found to be significantly differently ( t=-6.69, P<0.001; t=-31.02, P<0.001; t=-8.67, P<0.001; t=-7.06, P<0.001). After 6 months of surgery, Rasmussen's radiological score was 17.32 ± 1.06 in the study group and 17.58 ± 0.85 in the control group with no significant difference ( t=-1.04, P=0.150). After 6 months of surgery, the HSS score in the study group was 93.75±2.22, and 92.71±2.19 in the control group with significant difference ( t=1.81, P=0.038). The VAS score between the study and control group was 7.04±0.92 vs. 7.00±0.97 before the surgery, 2.71±0.85 vs. 4.74±0.93 three days after surgery, and 0.21±0.49 vs. 0.26±0.51 at the final follow-up with significant pain relief at either three days or the final follow up within either group ( F=1884.53, P<0.001; F=55.98, P<0.001). Significant difference between the two groups was found at three days after the surgery ( t=-10.28, P<0.001), while no significant difference was found before surgery or at the final follow-up ( P>0.05). The wounds in the study group healed well, while in the control group, 4 cases had poor wound healing. One case in the study group had intraoperative balloon rupture and contrast agent leakage, while two cases had bone graft material leakage. There were no intraoperative complications in the open group. Conclusion:Robot guided balloon tibial osteoplasty for Schatzker II and III tibial plateau fractures had achieved satisfactory reduction, minimal bleeding, minimal trauma, short hospital stay, good knee joint function recovery, and satisfactory clinical results. However, attention should be paid to the issue of contrast agent leakage caused by balloon rupture.

ObjectiveTo investigate the quality of disinfection in the SARS-CoV-2 nucleic acid sampling sites in Shanghai. MethodsSwab samples of medical staff’ hands and environments of different SARS-CoV-2 nucleic acid sampling sites were collected from July to September 2022， with the total number of bacterial colonies cultured and counted. ResultsA total of 728 swab samples were collected from 69 sampling sites. The median total number of bacterial colonies on hand surface， object surface and air samples were 0 CFU·cm^-2， 0 CFU·cm^-2， and1 CFU·（petri dish∙5 min）^-1， respectively， and P₉₅ was 13 CFU·cm^-2， 5.3 CFU·cm^-2， and 17.8 CFU·（culture vessel∙5 min）^-1， respectively. According to the GB 15982‒2012 Hygienic Standard for Disinfection in Hospitals class Ⅳ environment， 680 samples met the standard （93.4%）. Furthermore， 96.9%， 92.0%， and 92.2% of the samples in the sampling sites of tertiary/secondary hospitals， community health centers， and community convenience sampling sites met the standard， respectively. Quality of disinfection did not differ significantly across these sampling sites. ConclusionThe quality of disinfection in the SARS-CoV-2 nucleic acid sampling sites in Shanghai is generally good. Additionally， hand hygiene of medical staff and disinfection on object surface in some sampling sites need to be strengthened.