Objective:To determine the prevalence, risk factors, and longitudinal associations of loneliness during mid- to late pregnancy with anxiety and depressive symptoms in late pregnancy.Methods:In this prospective cohort study, 1 107 pregnant women at 24-28 weeks' gestation were enrolled between June 2021 and December 2022. Psychological status was assessed during mid-pregnancy (24-28 weeks) and late pregnancy (≥32 weeks) using standardized electronic questionnaires, including the Revised University of California Los Angeles Loneliness Scale (UCLA) Loneliness Scale-Short Form (Cronbach's α=0.82), Patient Health Questionnaire-9 ( α=0.86), and Generalized Anxiety Disorder-7 ( α=0.88). Multivariate logistic regression identified independent risk factors for loneliness. Cross-lagged path models analyzed the longitudinal predictions between loneliness and anxiety/depressive symptoms. Results:The prevalence of loneliness decreased significantly from 10.8% (120/1 107) in mid-pregnancy to 4.8% (37/777) in late pregnancy ( χ2=21.81, P<0.001). Multivariate analysis identified independent risk factors for loneliness: age <30 years ( OR=1.70, 95% CI: 1.15-2.50), annual household income <50 000 CNY ( OR=2.53, 95% CI: 1.28-5.02), unemployment during pregnancy ( OR=1.57, 95% CI: 1.03-2.39), history of alcohol consumption ( OR=1.63, 95% CI: 1.03-2.56), and the presence of mid-pregnancy depressive ( OR=2.76, 95% CI: 1.51-5.04) and anxiety symptoms ( OR=1.65, 95% CI: 1.01-2.71) (all P<0.05). Cross-lagged path models indicated bidirectional associations between loneliness and both anxiety ( β=0.32, P<0.01) and depressive symptoms ( β=0.28, P<0.01). However, the predictive effect of loneliness on subsequent depressive and anxiety symptoms ( β=0.28-0.32) was substantially stronger than the reverse prediction (mid-pregnancy anxiety on late-pregnancy loneliness: β=0.12; mid-pregnancy depression on late-pregnancy loneliness: β=0.11). Loneliness demonstrated high temporal stability (autoregressive effects β=0.29-0.32). Conclusion:Loneliness in mid-pregnancy exhibits a symmetric bidirectional association with anxiety and depressive symptoms in late pregnancy, suggesting it may be a core driver in the development of these emotional symptoms. Younger maternal age (<30 years), low household income (<50 000 CNY/year), unemployment during pregnancy, and a history of alcohol consumption were associated with a higher risk of loneliness and should be prioritized for psychological screening and intervention.

Objective To investigate the effect of a modified chest drainage management protocol on rapid recovery in patients undergoing thoracoscopic lung resection.Methods A retrospective analysis was conducted on clinical data of 218 patients who underwent segmentectomy,lobectomy,or combined lobectomy surgeries between July 2022 and December 2023 in our department.One medical group utilized the traditional chest drainage management protocol(control group,109 cases),while the other medical group employed the modified chest drainage management protocol(modified group,109 cases).The control group had a large chest tube(20-24F)placed at the mid-axillary line of the 7th intercostal space leading to the apex of the pleural cavity(removed when drainage volume＜300 ml/24 h and air leak＜20 ml/min).In contrast,the modified group had a large tube placed from the anterior axillary line between the 3rd and 4th intercostal spaces leading to the apex of the pleural cavity(removed when air leak＜20 ml/min),and a small tube(7F)placed at the posterior axillary line between the 7th and 8th intercostal spaces near the diaphragm surface(removed when drainage volume＜300 ml/24 h).Comparisons were made between the two groups regarding duration of large tube placement and total duration tube placement,total drainage volume,postoperative hospital stay,and postoperative complications.The pain scores,number of cases with moderate to severe pain(pain score ≥4),analgesic pump drug usage,and functional activity score(FAS)were recorded on the 1st and 2nd day after surgery.Results The duration of large tube placement was shorter in the modified group than in the control group[(2.1±1.6)dvs.(2.7±1.8)d,t=-2.715,P=0.007].and the total duration of tube placement was longer in the modified group than in the control group[(3.3±2.0)dvs.(2.7±1.8)d,t=2.308,P=0.022].without increasing postoperative hospital stay[(4.2±2.2)dvs.(4.1±2.1)d,t=0.247,P=0.805].On the postoperative day 2,the modified group showed lower pain scores during activity than the control group[(2.1±1.1)points vs.(2.6±1.3)points,t=-2.885,P=0.004].fewer cases with moderate to severe pain(5 cases vs.14 cases,x2=4.670,P=0.031),and less analgesic pump drug usage[(17.9±16.2)ml vs.(27.4±29.4)ml,t=-2.951,P=0.004].No significant differences were observed in other indicators between the two groups(P＞0.05).Additionally,the proportion of patients with FAS grade A(no activity limitation due to pain)was higher in the modified group than in the control group on the postoperative day 2[61.5％(67/109)vs.46.8％(51/109),Z=-2.170,P=0.030].There were no significant differences in postoperative complications and incision healing rates between the two groups(P＞0.05).Conclusion The modified chest drainage management protocol not only ensures adequate drainage but also reduces the degree of pain and improves activity status,aligning with the principles of enhanced recovery after surgery(ERAS).

Objective To investigate the effect of a modified chest drainage management protocol on rapid recovery in patients undergoing thoracoscopic lung resection.Methods A retrospective analysis was conducted on clinical data of 218 patients who underwent segmentectomy,lobectomy,or combined lobectomy surgeries between July 2022 and December 2023 in our department.One medical group utilized the traditional chest drainage management protocol(control group,109 cases),while the other medical group employed the modified chest drainage management protocol(modified group,109 cases).The control group had a large chest tube(20-24F)placed at the mid-axillary line of the 7th intercostal space leading to the apex of the pleural cavity(removed when drainage volume＜300 ml/24 h and air leak＜20 ml/min).In contrast,the modified group had a large tube placed from the anterior axillary line between the 3rd and 4th intercostal spaces leading to the apex of the pleural cavity(removed when air leak＜20 ml/min),and a small tube(7F)placed at the posterior axillary line between the 7th and 8th intercostal spaces near the diaphragm surface(removed when drainage volume＜300 ml/24 h).Comparisons were made between the two groups regarding duration of large tube placement and total duration tube placement,total drainage volume,postoperative hospital stay,and postoperative complications.The pain scores,number of cases with moderate to severe pain(pain score ≥4),analgesic pump drug usage,and functional activity score(FAS)were recorded on the 1st and 2nd day after surgery.Results The duration of large tube placement was shorter in the modified group than in the control group[(2.1±1.6)dvs.(2.7±1.8)d,t=-2.715,P=0.007].and the total duration of tube placement was longer in the modified group than in the control group[(3.3±2.0)dvs.(2.7±1.8)d,t=2.308,P=0.022].without increasing postoperative hospital stay[(4.2±2.2)dvs.(4.1±2.1)d,t=0.247,P=0.805].On the postoperative day 2,the modified group showed lower pain scores during activity than the control group[(2.1±1.1)points vs.(2.6±1.3)points,t=-2.885,P=0.004].fewer cases with moderate to severe pain(5 cases vs.14 cases,x2=4.670,P=0.031),and less analgesic pump drug usage[(17.9±16.2)ml vs.(27.4±29.4)ml,t=-2.951,P=0.004].No significant differences were observed in other indicators between the two groups(P＞0.05).Additionally,the proportion of patients with FAS grade A(no activity limitation due to pain)was higher in the modified group than in the control group on the postoperative day 2[61.5％(67/109)vs.46.8％(51/109),Z=-2.170,P=0.030].There were no significant differences in postoperative complications and incision healing rates between the two groups(P＞0.05).Conclusion The modified chest drainage management protocol not only ensures adequate drainage but also reduces the degree of pain and improves activity status,aligning with the principles of enhanced recovery after surgery(ERAS).

Objective:To determine the prevalence, risk factors, and longitudinal associations of loneliness during mid- to late pregnancy with anxiety and depressive symptoms in late pregnancy.Methods:In this prospective cohort study, 1 107 pregnant women at 24-28 weeks' gestation were enrolled between June 2021 and December 2022. Psychological status was assessed during mid-pregnancy (24-28 weeks) and late pregnancy (≥32 weeks) using standardized electronic questionnaires, including the Revised University of California Los Angeles Loneliness Scale (UCLA) Loneliness Scale-Short Form (Cronbach's α=0.82), Patient Health Questionnaire-9 ( α=0.86), and Generalized Anxiety Disorder-7 ( α=0.88). Multivariate logistic regression identified independent risk factors for loneliness. Cross-lagged path models analyzed the longitudinal predictions between loneliness and anxiety/depressive symptoms. Results:The prevalence of loneliness decreased significantly from 10.8% (120/1 107) in mid-pregnancy to 4.8% (37/777) in late pregnancy ( χ2=21.81, P<0.001). Multivariate analysis identified independent risk factors for loneliness: age <30 years ( OR=1.70, 95% CI: 1.15-2.50), annual household income <50 000 CNY ( OR=2.53, 95% CI: 1.28-5.02), unemployment during pregnancy ( OR=1.57, 95% CI: 1.03-2.39), history of alcohol consumption ( OR=1.63, 95% CI: 1.03-2.56), and the presence of mid-pregnancy depressive ( OR=2.76, 95% CI: 1.51-5.04) and anxiety symptoms ( OR=1.65, 95% CI: 1.01-2.71) (all P<0.05). Cross-lagged path models indicated bidirectional associations between loneliness and both anxiety ( β=0.32, P<0.01) and depressive symptoms ( β=0.28, P<0.01). However, the predictive effect of loneliness on subsequent depressive and anxiety symptoms ( β=0.28-0.32) was substantially stronger than the reverse prediction (mid-pregnancy anxiety on late-pregnancy loneliness: β=0.12; mid-pregnancy depression on late-pregnancy loneliness: β=0.11). Loneliness demonstrated high temporal stability (autoregressive effects β=0.29-0.32). Conclusion:Loneliness in mid-pregnancy exhibits a symmetric bidirectional association with anxiety and depressive symptoms in late pregnancy, suggesting it may be a core driver in the development of these emotional symptoms. Younger maternal age (<30 years), low household income (<50 000 CNY/year), unemployment during pregnancy, and a history of alcohol consumption were associated with a higher risk of loneliness and should be prioritized for psychological screening and intervention.

Wild castor grows in the high-altitude tropical desert of the African Plateau,a region known for high ultraviolet radiation,strong light,and extremely dry condition.To investigate the potential genetic basis of adaptation to both highland and tropical deserts,we generated a chromosome-level genome sequence assembly of the wild castor accession WT05,with a genome size of 316 Mb,a scaffold N50 of 31.93 Mb,and a contig N50 of 8.96 Mb,respectively.Compared with cultivated castor and other Euphorbiaceae species,the wild castor exhibits positive selection and gene family expansion for genes involved in DNA repair,photosynthesis,and abiotic stress responses.Genetic variations associated with positive selection were identified in several key genes,such as LIG1,DDB2,and RECGI,involved in nucleotide excision repair.Moreover,a study of genomic diversity among wild and cultivated accessions revealed genomic regions containing selection signatures associated with the adaptation to extreme environments.The identification of the genes and alleles with selection signatures provides insights into the genetic mechanisms under-lying the adaptation of wild castor to the high-altitude tropical desert and would facilitate direct improvement of modern castor varieties.

Objective To observe the effect of the nutrition management according to the JCI(Joint Commission on Accreditation of Healthcare Organizations)management standard for critically ill pediatric patients with mechanical ventilation.Methods A total of 330 cases with mechanical ventilation were en-rolled in the control group from Hunan Province Children's Hospital PICU between Jan.2012 and Dec.2012, and these pediatric patients were managed with the conventional nutrient management.A total of 359 pediatric patients with mechanical ventilation were admitted to the experimental group from Jan.2013 to Dec.2013 and these patients were managed with nutrient management based on JCI standards.The length of mechanical venti-lation,stay in ICU,stay in hospital were compared between two groups,and the incidence of ventilator-associ-ated pneumonia,abandonment rate and mortality were also compared between experimental group and control group.Results The length of mechanical ventilation in control group[(8.39 ±1.34)days]was longer than that of experimental group[(5.69 ±1.12)days].The length of stay in PICU for control group[(12.32 ± 1.37)days]was more than that in experimental group[(9.42 ±1.53)days].The length of stay in hospital for control group [(15.37 ±2.16 )days]was higher than that of experimental group [(12.63 ±2.29 ) days].The incidence of ventilator-associated pneumonia(9.7%)in control group was higher than that of ex-perimental group,and the giving up or mortality rate in control group(8.48%)was higher than that of exper-imental group(4.35%).And there were significant differences by statistical analysis(P ﹤0.01 ,respective-ly).Conclusion According to the nutritional management in JCI standard,the length of mechanical ventila-tion,stay in PICU and stay in hospital time,the incidence of ventilator-associated pneumonia,and the aban-doned or mortality rate were reduced for critically ill pediatric patients with mechanical ventilation.

Objective To study the effects of naked DN A encoding vascular endothelial growth factor 165 (VEGF 165 )on cerebra l infarction in rats. Methods Following establishme nt of a permanent middle cerebral artery occlusion (MACO) model by nylon suture embolization in Wistar rats, the puCCAGGS/hVEGF 165 was directly injected i nto the ischemic tissues through skull hole. Seven days later, the rats were sac rificed. The infarct volume was measured by 2% TTC staining technique, then the expression of VEGF 165 gene and vascular proliferation were measured by use of RT-PCR and immumohistochemistry methods. Results Expression of VEGF 165 mRNA and VEGF protein in the therapy group increas ed. Compared with the control group, the number of vessels of the therapy group was significantly higher (50.76/HPF vs 40.67/HPF)( P

Objective To evaluate the effect of calcitonic gene related peptide(CGRP) and endothelin(ET) on acute and delayed cerebral vasospasm(CVS) after subarachnoid hemorrhage(SAH).Methods The SAH model in rabbit were established by single injection of autologous arterial blood(0.5 ml/kg) to cisterna magna on percutaneous suboccpital route. Transcranial Dopper(TCD) was performed to detect the spastic of rabbit basilar artery(BA). The CGRP and ET concentrations in cerebrospinal fluid were examinated quntitatively by radioimmunologlc techniques at 30 minutes, 3 days, and 5 days after SAH.Results The results of TCD showed that rabbit basilar artery was spastic at 30 minutes, 3 days and 5 days after SAH. At 30 minutes after SAH, CGRP concentration significantly increased upto about 18 fold( P