Objective:To analysis the prevalence and characteristics of comorbid insomnia and sleep disordered breathing (SDB) in community population.Methods:This is a cross-sectional study. Cluster sampling was applied. Community residents in Shantou and Meizhou were investigated during April to May, 2021. Essential information collection, sleep related health investigation, and sleep study were conducted. Insomnia was defined as the insomnia severity index (ISI)≥8. A type Ⅳ wearable intelligent sleep monitor was applied for sleep study. Comorbid insomnia and SDB was defined as both diagnosis of insomnia and SDB. Statistical analysis was conducted by SPSS 25. Prevalence and characteristics of insomnia only, SDB only and comorbid insomnia and SDB were analyzed. Logistic regression was conducted to analyze the relationship between sleep disorders and unrestored sleep, abnormal glucose metabolism, hyperlipidemia, and cardiovascular disease.Results:There were 3 730 residents completed the investigation. The median age was 55.0 (46.0, 63.0) years. The prevalence of insomnia only, SDB only, and comorbid insomnia and SDB were 26.0%, 20.2%, and 10.4% respectively. The incidence of unrestored sleep in insomnia only and comorbid insomnia and SDB were 2.900 times and 3.777 times of that in no insomnia or SDB (both P<0.001); the risk of hyperlipidemia was elevated in insomnia only, SDB only and comorbid insomnia and SDB ( OR=1.553, 1.415, and 1.868; all P<0.05); the risk of cardiovascular disease increased 40.8% in SDB only ( P=0.001), and 42.1% in comorbid insomnia and SDB ( P=0.007), after adjusted by age, sex, body mass index (BMI), smoking, drinking, abnormal glucose metabolism, and hyperlipidemia. Stratified analysis revealed that young female (age<60 years) with normal BMI (<25 kg/m 2) and comorbid insomnia and SDB were associated with higher risk of cardiovascular disease. Female with normal body weight and insomnia only or comorbid insomnia and SDB were associated with higher risk of hyperlipidemia. Conclusions:The prevalence of comorbid insomnia and SDB is high in community population. Patients with comorbid insomnia and SDB present with more significant unrestored sleep, and are correlated with higher risk of hyperlipidemia and cardiovascular diseases.

Objective:To explore the effects of tensile force on vascular lumen formation in three-dimensional printed tissue.Methods:The experimental research method was used. Human umbilical vein endothelial cells (HUVECs) were extracted from discarded umbilical cord tissue of 3 healthy women (aged 22 to 35 years) who gave birth in the Department of Gynaecology and Obstetrics of Suzhou Ruihua Orthopaedic Hospital from September 2020 to May 2021. Human skin fibroblasts (HSFs) were extracted from discarded normal skin tissue of 10 male patients (aged 20 to 45 years) who underwent wound repair in the Department of Hand Surgery of Suzhou Ruihua Orthopaedic Hospital from September 2020 to September 2022. After identification of the two kinds of cells, the 4 th to 6 th passage of cells were taken for the follow-up experiments. HUVECs and HSFs were used as seed cells, and polycaprolactone, gelatin, hyaluronic acid, and fibrin were used as scaffold materials, and the three-dimensional printed vascularized tissue was created by three-dimensional bioprinting technology. The printed tissue with polycaprolactone scaffold of 6 and 10 mm spacing, and without polycaprolactone scaffold were set as 6 mm spacing polycaprolactone group, 10 mm spacing polycaprolactone group, and non-polycaprolactone group, respectively. After 4 days of culture, the printed tissue in 10 mm spacing polycaprolactone group was selected to detect the cell survival by cell viability detection kit, and the cell survival rate was calculated. After 14 days of culture, the printed tissue in three groups were taken, and the shape change of tissue was observed by naked eyes; immunofluorescence staining was performed to observe the arrangement of filamentous actin, and lumen diameter, total length, and number of branches of vessel in the tissue. The tissue with micro-spring structure in the above-mentioned three groups was designed, printed, and cultured for 9 days, and the tensile force applied in the printed tissue was measured according to the force-displacement curve. The number of samples was all 3 in the above experiments. Data were statistically analyzed with one-way analysis of variance and Tukey test. Results:After 4 days of culture, the cell survival rate in printed tissue in 10 mm spacing polycaprolactone group was (91.3±2.2)%. After 14 days of culture, the shape change of printed tissue in non-polycaprolactone group was not obvious, while the shape changes of printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were obvious. After 14 days of culture, the arrangement of filamentous actin in the printed tissue in non-polycaprolactone group had no specific direction, while the arrangement of filamentous actin in the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group had a specific direction. After 14 days of culture, The vascular lumen diameters of the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were (6.0±1.3) and (10.8±1.3) μm, respectively, which were significantly larger than 0 μm in non-polycaprolactone group ( P<0.05), and the vascular lumen diameter of printed tissue in 10 mm spacing polycaprolactone group was significantly larger than that in 6 mm spacing polycaprolactone group ( P<0.05); the total length and number of branches of blood vessel in the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were significantly shorter or less than those in non-polycaprolactone group ( P<0.05), and the total length and number of branches of blood vessel in the printed tissue in 10 mm spacing polycaprolactone group were significantly shorter or less than those in 6 mm spacing polycaprolactone group. After 9 days of culture, the tensile forces applied in the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were (2 340±59) and (4 284±538) μN, respectively, which were significantly higher than 0 μN in non-polycaprolactone group ( P<0.05), and the tensile force applied in the printed tissue in 10 mm spacing polycaprolactone group was significantly higher than that in 6 mm spacing polycaprolactone group ( P<0.05). Conclusions:The three-dimensional printed scaffold structure can exert different tensile force in the printed tissue, and the vascular lumen diameter of the printed tissue can be regulated by adjusting the tensile force.

Objective:To investigate the predictive value of 18F-FDG PET-CT in the conversion from thoracoscopic lobectomy to thoracotomy for non-small cell lung cancer (NSCLC). Methods:The clinical data, CT and PET-CT images of 193 patients with primary NSCLC undergoing thoracoscopic surgery from January 2014 to June 2021 at China-Japan Friendship Hospital were retrospectively analyzed. All patients were divided into 45 cases who were converted to thoracotomy (the conversional group) and 148 cases who were not converted to thoracotomy (the non-conversional group). Univariate analysis was performed on clinicopathological characteristics and image parameters. Multivariate logistic regression was used to analyze the factors affecting the conversion to thoracotomy. Taking the final conversion to thoracotomy or not as the gold standard, the predictive effect of variables in the conversion to thoracotomy was analyzed through the receiver operating characteristic (ROC) curve. Delong test was used to compare the area under the curve (AUC) predicted by all variables.Results:In the conversional group, the proportion of peribronchial lymph node (PLN), peribronchial cuffs of soft (PCS), pleural calcification, pulmonary nodule calcification, PLN or PCS calcification or increased density on chest CT was higher than that in the non-conversional group (all P<0.05); and the maximum standardized uptake value (SUV max) of PET in the conversional group was higher compared with that in the non-conversional group ( P<0.001). Univariate logistic regression analysis suggested age ( OR = 4.663,95% CI 2.191- 9.923, P < 0.001) and PLN or PCS density of chest CT scan ( OR = 2.824, 95% CI 1.791-7.303, P < 0.001) were independent influencing factors of the conversion from thoracoscopic lobectomy to thoracotomy. ROC analysis showed that the effect of the conversion to thoracotomy predicted by the combination of 18F-FDG PET and chest CT [AUC = 0.891 (95% CI 0.831-0.951); the optimal cut-off value of SUV max and CT was 3.45, 70 Hu: the sensitivity was 84.4%, the specificity was 83.8%] was better than that by chest CT alone [AUC = 0.678 (95% CI 0.591-0.766); the optimal cut-off value of CT was 70 Hu: the sensitivity was 62.2%, the specificity was 62.8%; P < 0.001] and by age [AUC = 0.625 (95% CI 0.532-0.719); the optimal cut-off value was 65.5 years: the sensitivity was 75.6%, the specificity was 60.1%; P < 0.001]. Conclusions:PLN or PCS density on chest scan and age are valuable in predicting the conversion from thoracoscopic lobectomy to thoracotomy for NSCLC patients. The combination of PET and CT has an additional role in predicting the conversion to thoracotomy during thoracoscopic lobectomy.

Objective:To analyze the gray-scale ultrasound and contrast-enhanced ultrasound features in secondary hyperparathyroidism (SHPT) to construct a clinical and ultrasound-based model, and to investigate the relationship between this model and serum intact parathyroid hormone(iPTH) level in order to find proper indicators for evaluation of the severity of SHPT.Methods:From February 2016 to March 2021, a total of 59 SHPT patients with 181 parathyroid glands (PTGs) admitted to the First Affiliated Hospital of Sun Yat-Sen University were enrolled. Gray-scale ultrasound and contrast-enhanced ultrasound were performed in every participant. Patients were divided into low-iPTH group ( iPTH<800 ng/L) and high-iPTH group (iPTH≥800 ng/L) according to the serum iPTH level. The characteristics of gray-scale ultrasonic imaging and contrast-enhanced ultrasonic imaging were analyzed by 2 sonographers.Biochemical parameters were collected and combined with ultrasonic characteristics to construct the clinical and ultrasound-based model. The relationship between the model and serum iPTH level was analyzed by multivariate linear regression (stepwise). Independent influencing factors on serum iPTH level was investigated in SHPT patients without iPTH-reducing drugs using history.Results:There were 19 patients in low-iPTH group and 40 patients in high-iPTH group.Serum calcium, serum phosphorus, serum creatinine, PTG number, total PTG volume, blood scores, calcification and cysts scores, CEUS scores (washing-in phase and washing-out phase) were significantly different between two groups(all P<0.05). The multivariate linear regression (stepwise) showed that serum phosphorus, total PTG volume and blood scores were independently related with serum iPTH level (standardized β coefficient were 0.387, 0.254 and 0.242 respectively; all P<0.05). Conclusions:Serum phosphorus, total PTG volume and blood scores are independent influencing factors on serum iPTH level. Ultrasonography combined with clinical parameters can help evaluate the severity of SHPT more accurately.

Objective:To provide scientific basis for the prevention and control of pneumoconiosis and the formulation of relevant policies, this paper discusses the loss of health life and economic loss caused by coal worker's pneumoconiosis in a mining group.Methods:From March to October 2017, 1262 cases of coal worker's pneumoconiosis were diagnosed in a mining group from 1972 to 2013. The direct and indirect economic losses are calculated by the step-by-step model method. Direct economic losses include medical expenses, one-time disability allowance, disability allowance, funeral allowance, one-time work death allowance, living and nursing expenses, food allowance, pension for supporting relatives and transportation expenses, etc. Indirect economic losses includes loss of social productivity, additional training fee for new employees, transportation fee for accompanying family members, loss of social productivity of accompanying family members, loss of production suspension and production reduction, etc. Life table method was used to calculate the loss of social productivity caused by coal worker's pneumoconiosis.Results:All 1262 coal worker's pneumoconiosis patients were male. In the stage of pneumoconiosis, 95.40% (1204/1262) of the first stage of pneumoconiosis and 42.62% (538/1262) of the seventh stage of disability. The age of diagnosis (22.02-71.33) was 47.38 years on average. 1262 coal worker's pneumoconiosis patients caused a total of 9068.54 years of health life loss, of which YLD accounted for 93.56% (8484.69/9068.54) . The loss of YLD (0.06-33.30) years in 1262 coal worker's pneumoconiosis patients was 6.70 years per capita. The total economic loss of 1262 coal workers with pneumoconiosis was 2842185447.70 yuan, with a per capita of 2252127.93 yuan. The direct economic loss accounted for 81.59% (2318990168.46/2842185447.70) , which was 4.42 times of the indirect economic loss. Among the direct economic loss per capita, medical expenses accounted for a large proportion of 50.04% (919510.84/1837551.64) . The per capita indirect economic loss is 414576.29 yuan. The loss of social productivity accounted for 56.18% (232908.95/414576.29) .Conclusion:Coal worker's pneumoconiosis causes heavy economic burden and serious loss of social productivity.

Objective:To investigate the protective effect of somatostatin (SS) on acute kidney injury (AKI) of paraquat (PQ) poisoned mice and its mechanism.Methods:From December 2017 to April 2018, a total of 48 SPF male BALB/C mice were selected and randomly divided into 4 groups, with 12 mice in each group: Control group, SS group (20 mg/kg SS was injected 1 hour before and 3 hours after gavage with normal saline) , PQ group (2% PQ 60 mg/kg by gavage) and PQ+SS group (Intragastric administration was performed with 2% PQ solution of 60 mg/kg, and 20 mg/kg SS was administered 1 h before and 3 h after intragastric administration) , 12 mice in each group were observed for the general situation and behavioral effects. After 24 hours of modeling, mice were sacrificed.Then blood was extracted after eyeball was removed, and both kidneys were removed by laparotomy. Serum IL-6, TNF-α and MPO levels were determined by ELISA. The characteristic pathological changes of toxic renal tubular injury were observed under light microscope and scored accordingly. The changes of NF-κB expression were detected by Western-Blot, SOD, Caspase-3 and malondialdehyde (MDA) were detected by chemical colorimetry.Results:Mice in Control group and SS group showed normal general conditions and behaviors; Mice in PQ group were significantly worse than those in Control group, showing decreased feeding and activity, dry fur, hair shedding and listless spirit; The above symptoms in the mice of PQ+SS group were alleviated compared with the PQ group. Under the light microscope, the renal tissue structure of PQ group was obviously disordered and severely damaged, and the nephropathy score was (6.14±0.72) . The performance of PQ+SS group under light microscope was improved compared with PQ group, and nephropathy score (4.36±0.42) decreased ( P<0.05) . Compared with the Control group, serum TNF-α (39.89±3.32) pg/ml, IL-6 (77.29±4.77) pg/ml, renal NF-κB (2.29±0.097) , MPO (0.31±0.017) μg/ml, MDA (0.91±0.03) mmol/mg prot, and Caspase-3 (376.51±8.24) % levels were significantly increased in the PQ group, while the level of renal SOD (2.36±0.73) U/mg prot was significantly decreased ( P<0.05) . Compared with the PQ group, serum TNF-α (33.82±1.57) pg/ml, IL-6 (58.49±5.89) pg/ml, renal NF-κB (0.84±0.05) , MPO (0.22±0.01) μg/ml, MDA (0.72±0.05) mmol/mg prot, Caspase-3 (327.32±21.93) % decreased significantly, and renal SOD (4.90±0.81) U/mg prot increased significantly in the PQ+SS group ( P<0.05) . Conclusion:PQ poisoning can lead to AKI in mice, while SS can reduce AKI caused by PQ poisoning, improve the general survival state of PQ poisoned mice, and play a certain protective role in kidney injury caused by PQ poisoning, which may be achieved by inhibiting oxidative stress response, inflammatory response and apoptosis caused by poisoning.

Objective:To provide scientific basis for the prevention and control of pneumoconiosis and the formulation of relevant policies, this paper discusses the loss of health life and economic loss caused by coal worker's pneumoconiosis in a mining group.Methods:From March to October 2017, 1262 cases of coal worker's pneumoconiosis were diagnosed in a mining group from 1972 to 2013. The direct and indirect economic losses are calculated by the step-by-step model method. Direct economic losses include medical expenses, one-time disability allowance, disability allowance, funeral allowance, one-time work death allowance, living and nursing expenses, food allowance, pension for supporting relatives and transportation expenses, etc. Indirect economic losses includes loss of social productivity, additional training fee for new employees, transportation fee for accompanying family members, loss of social productivity of accompanying family members, loss of production suspension and production reduction, etc. Life table method was used to calculate the loss of social productivity caused by coal worker's pneumoconiosis.Results:All 1262 coal worker's pneumoconiosis patients were male. In the stage of pneumoconiosis, 95.40% (1204/1262) of the first stage of pneumoconiosis and 42.62% (538/1262) of the seventh stage of disability. The age of diagnosis (22.02-71.33) was 47.38 years on average. 1262 coal worker's pneumoconiosis patients caused a total of 9068.54 years of health life loss, of which YLD accounted for 93.56% (8484.69/9068.54) . The loss of YLD (0.06-33.30) years in 1262 coal worker's pneumoconiosis patients was 6.70 years per capita. The total economic loss of 1262 coal workers with pneumoconiosis was 2842185447.70 yuan, with a per capita of 2252127.93 yuan. The direct economic loss accounted for 81.59% (2318990168.46/2842185447.70) , which was 4.42 times of the indirect economic loss. Among the direct economic loss per capita, medical expenses accounted for a large proportion of 50.04% (919510.84/1837551.64) . The per capita indirect economic loss is 414576.29 yuan. The loss of social productivity accounted for 56.18% (232908.95/414576.29) .Conclusion:Coal worker's pneumoconiosis causes heavy economic burden and serious loss of social productivity.

Objective:To investigate the protective effect of somatostatin (SS) on acute kidney injury (AKI) of paraquat (PQ) poisoned mice and its mechanism.Methods:From December 2017 to April 2018, a total of 48 SPF male BALB/C mice were selected and randomly divided into 4 groups, with 12 mice in each group: Control group, SS group (20 mg/kg SS was injected 1 hour before and 3 hours after gavage with normal saline) , PQ group (2% PQ 60 mg/kg by gavage) and PQ+SS group (Intragastric administration was performed with 2% PQ solution of 60 mg/kg, and 20 mg/kg SS was administered 1 h before and 3 h after intragastric administration) , 12 mice in each group were observed for the general situation and behavioral effects. After 24 hours of modeling, mice were sacrificed.Then blood was extracted after eyeball was removed, and both kidneys were removed by laparotomy. Serum IL-6, TNF-α and MPO levels were determined by ELISA. The characteristic pathological changes of toxic renal tubular injury were observed under light microscope and scored accordingly. The changes of NF-κB expression were detected by Western-Blot, SOD, Caspase-3 and malondialdehyde (MDA) were detected by chemical colorimetry.Results:Mice in Control group and SS group showed normal general conditions and behaviors; Mice in PQ group were significantly worse than those in Control group, showing decreased feeding and activity, dry fur, hair shedding and listless spirit; The above symptoms in the mice of PQ+SS group were alleviated compared with the PQ group. Under the light microscope, the renal tissue structure of PQ group was obviously disordered and severely damaged, and the nephropathy score was (6.14±0.72) . The performance of PQ+SS group under light microscope was improved compared with PQ group, and nephropathy score (4.36±0.42) decreased ( P<0.05) . Compared with the Control group, serum TNF-α (39.89±3.32) pg/ml, IL-6 (77.29±4.77) pg/ml, renal NF-κB (2.29±0.097) , MPO (0.31±0.017) μg/ml, MDA (0.91±0.03) mmol/mg prot, and Caspase-3 (376.51±8.24) % levels were significantly increased in the PQ group, while the level of renal SOD (2.36±0.73) U/mg prot was significantly decreased ( P<0.05) . Compared with the PQ group, serum TNF-α (33.82±1.57) pg/ml, IL-6 (58.49±5.89) pg/ml, renal NF-κB (0.84±0.05) , MPO (0.22±0.01) μg/ml, MDA (0.72±0.05) mmol/mg prot, Caspase-3 (327.32±21.93) % decreased significantly, and renal SOD (4.90±0.81) U/mg prot increased significantly in the PQ+SS group ( P<0.05) . Conclusion:PQ poisoning can lead to AKI in mice, while SS can reduce AKI caused by PQ poisoning, improve the general survival state of PQ poisoned mice, and play a certain protective role in kidney injury caused by PQ poisoning, which may be achieved by inhibiting oxidative stress response, inflammatory response and apoptosis caused by poisoning.

Objective To analyze the influence factors of local efficacy by parametric contrast enhanced ultrasound (CEUS) of the hepatocellular carcinoma (HCC) patient treated with transcatheter arterial chemoembolization (TACE),and to investigate the application value of parametric CEUS in TACE.Methods From August 2011 to March 2014,a total of 61 HCC patients [60 men,1 women;age range:18-76 years,mean age:(53 ± 13)years old] who underwent one procedure of TACE were enrolled in this prospective study.All cases were scanned by CEUS 1-7 days before and after TACE (3 days,15 days and 30 days post-TACE).Analysis of tumor perfusion during the procedure of CEUS was performed with dedicated software (SonoLiver,TomTec,Germany and Bracco,Italy).Time-intensity curves were plotted and parameters were extracted.According to modified response evaluation criteria in solid tumors (mRECIST),we evaluated the response of TACE using contrast-enhanced computed tomography (CECT) and CEUS 30 days after TACE,which was as reference standard.Results There was a middle negative correlation between the reference standard and the PSV of the hepatic artery pre-TACE,and the correlation coefficient was 0.436 (P =0.011).There was a low negative correlation between the reference standard and the TTP of the reference region on 3 days post-TACE and the analysis region pre-TACE,and the correlation coefficient was -0.264 and-0.268 (P =0.047,P =0.037).Conclusions Our preliminary study suggests,some parameters of CEUS can predict the local response of TACE.

Objective: To explore the protective effect and mechanism of Somatostatin (SS) on the mice with Paraquat (PQ) poisoning, and to provide theoretical basis for clinical treatment of PQ poisoning. Methods: 48 SPF male BALB/c mice were randomly divided into control group, SS group, PQ group and PQ+SS group, with 12 mice in each group. 20 ml/kg SS solution was intraperitoneally injected into the SS group and PQ+SS group, and the same amount of normal saline was intraperitoneally injected into the PQ group and control group. After 1 hour of the above treatment, PQ group and PQ+SS group were given 60 mg/kg PQ solution by one-time gavage, while the control group and SS group were given the same amount of normal saline by gavage. After the above treatment for 3 hours, the SS group and PQ+SS group were intraperitoneally injected with SS solution (20 ml/kg) again, and the PQ group and the control group were intraperitoneally injected with the same amount of normal saline. 6 eyeballs were randomly selected from each group for blood collection, and the levels of TNF-α, MPO and il-6 in the blood of mice were detected by ELISA and other methods. The left lung was taken after blood collection to calculate the D/W ratio. The levels of SOD, caspase-3 and MDA were detected in some lung tissues by chemical colorimetry, and the amount of NF-κB was detected by Western blot. The lung histopathological changes were observed under light microscope. Results: The mice in the control group and SS group showed normal activity and good general condition; Mice in the PQ group ate less and moved less, responded slowly to stimulation, breathed shallow and fast with thickened breath sound, had messy and dull fur, and had varying degrees of cyanosis on their lips and limbs; The above performance of PQ+SS group was less than that of PQ group. Under the light microscope, the alveolar structure of PQ group was disordered and seriously damaged. The pathological changes of lung tissue in PQ+SS group were significantly improved compared with that in PQ group, and the pathological scores were decreased (all P<0.05) . Compared with the control group, there was no significant change in the levels of various indicators in the SS group (all P>0.05) . While the levels of inflammatory cytokines (IL-6, TNF-α, Protein expression of NF-κB) , oxidative cytokines (MPO, MDA) and apoptotic cytokines caspase-3 in PQ mice were significantly increased, and the levels of oxidative cytokines SOD and lung tissue D/W were significantly decreased (all P<0.05) . Compared with the PQ group, the PQ+SS group, the levels of inflammatory cytokines (IL-6, TNF-α, Protein expression of NF-κB) , oxidative cytokines (MPO, MDA) and apoptotic cytokines caspase-3 decreased, and the levels of oxidative cytokines SOD and lung tissue D/W increased (all P<0.05) . Conclusion PQ poisoning can cause lung injury in mice, while SS can alleviate lung injury in PQ poisoned mice, improve the general survival state of mice, and play a certain protective role in lung injury caused by PQ poisoning, which may be achieved by SS throμgh reducing the inflammatory response, oxidative stress response and lung tissue apoptosis in lung injury caused by PQ poisoning.