Objective:To understand the current status of the actual protective effect of respiratory protective equipment (RPE) for workers exposed to trichloroethylene (TCE), and to explore the factors affecting the actual protective effect.Methods:From July to December 2023, a total of 75 workers occupationally exposed to TCE from 21 hardware and electronics manufacturing facilities in a province were selected as research objects by convenient sampling method. Workplace protection factor (WPF) was used as an index to evaluate the actual protective effect of workers' RPE. The concentration of TCE inside and outside the RPE was detected to calculate WPE, and the temperature, humidity and wind speed near the working place were measured, as well as the forced vital capacity, respiratory rate, heart rate and other indicators of the worker were measured. The log-transformed WPF value (lgWPF) followed a normal distribution. One-sample t-test was used to compare the difference between the mean lgWPF and the log value of the assigned protection factor (APF) of the half mask (lgAPF=1). Multiple linear regression model was used to investigate the influencing factors of lgWPF. Results:The lgWPF of 75 TCE-exposed workers ranged from 0.40 to 1.32 (0.84±0.22). The mean of lgWPF was lower than that of lgAPF, and the difference was statistically significant ( t=-6.37, P<0.001). After adjusting for confounding factors, the results of multiple linear regression showed that humidity, forced vital capacity and respiratory rate were negatively correlated with lgWPF ( β=-0.008, -0.079, -0.021, P<0.05) . Conclusion:The actual protective efficacy of RPE among workers exposed to TCE is suboptimal. High humidity, elevated forced vital capacity, and increased respiratory rate may be contributing factors to the diminished protective performance of RPE.

Objective:To explore the role of LncRNA NKILA/NF-κB signal pathway in the injury of keratinocytes in oral lichen planus(OLP).Methods:Immortalized human epidermal cells(HaCaTs)were induced by bacterial lipopolysaccharide(LPS)to establish an in vitro cell model of OLP.HaCaTs stably overexpressing NKILA were constructed by lentivirus method.HaCaTs were divided into 4 groups:Control group,Control+LPS group,empty vector infected with lentivirus(NC)+LPS group,overexpressed NKILA(OE)+LPS group.Cell proliferation,apoptosis,total superoxide dismutase(SOD)activity,lipid malondialdehyde oxide(MDA),reactive oxygen species(ROS),expression of related inflammatory factors,p65(nuclear,mass)and NF-κB signaling pathway related protein expression and p65 expression and localization were respectively detected.Results:Compared with Control group,the expression of NKILA,cell proliferation activity and SOD enzyme activity in Control+LPS group were significantly de-creased,while the apoptosis rate,MDA,ROS,IL-6,IL-1β,TNF-α and p65(nuclear and plasma)expression levels were signifi-cantly up-regulated(P＜0.05).Compared with Control+LPS group,the cell proliferation activity and SOD activity were increased in OE+LPS group,and the expression levels of cell apoptosis,MDA,ROS,IL-6,IL-1β,TNF-α and p65(nuclear and plasma)were significantly decreased(P＜0.05),and the localization of p65 protein in the nucleus was significantly decreased in OE+LPS group.Conclusion:LncRNA NKILA may reduce the damage of keratinocytes in oral lichen planus by inhibiting NF-κB signal pathway.

Objective To establish the fingerprint of Xuemai Shutong granules by UPLC-ELSD and determine the contents of 9 components in the preparation simultaneously.Methods The UPLC-ELSD was used to establish the fingerprint of Xuemai Shutong granules,and determine the content of its 9 components.The similarity evaluation system,systematic,cluster analysis,principal component analysis and orthogonal partial least squares discriminant analysis were used to evaluate the quality of different batches of preparation.Results The similarity degrees of UPLC-ELSD fingerprints of 11 batches of Xuemai Shutong granules were from 0.929 to 0.978,17 common peaks were calibrated,of which 11 peaks were identified:peak 3(notoginsenoside R1),peak 4[ginsenoside Rg,(Re)],peak 5(notoginsenoside R2),peak 6(ginsenoside Rb,),peak 9(astragaloside Ⅳ),peak 10(ginsenoside Rk3),peak 11(ginsenoside Rh4),peak 12[20(S)-ginsenoside Rg3],peak 13[20(R)-ginsenoside Rg3],peak 14(ginsenoside Rk1),peak 15(ginsenoside Rg5).The stoichiometric analysis divided 11 batches of samples into 2 classes,and the 2 principal components in PCA analysis reflected the information of 17common peaks,10 peaks which affected the quality difference are screened out.The linear relationship of the 9 components was good in their respective quality ranges in the content analysis(r＞0.999 2),the average recovery rate were between 95.02％-97.78％and the RSD were 0.69％-1.70％(n=6).The contents of notoginsenoside R1,notoginsenoside R2,ginsenoside Rb1,astragaloside Ⅳ,ginsenoside Rh4,20(S)-ginsenoside Rg3,20(R)-ginsenoside Rg3,ginsenoside Rk1 ginsenoside Rg5 in the 11 batches of Xuemai Shutong granules were 0.087 5-0.187 6,0.494 3-0.688 6,0.448 1-0.705 5,0.192 2-0.270 8,1.492 5-2.077 6,0.316 0-0.463 8,0.254 5-0.382 0,0.117 6-0.163 9,3.407 7-4.706 4 mg·g-1,respectively.Conclusions The established fingerprint and content determination method was accurate and reliable,which can improve the quality standard of Xuemai Shutong granules,and provide reference for its overall quality evaluation.

Objective:To systematically evaluate the psychological experience of women with fetal loss during subsequent pregnancy and to inform future care for women with fetal loss during subsequent pregnancy.Methods:Qualitative studies on the psychological experience of women with fetal loss during subsequent pregnancy was electronically searched in Chinese and English databases such as VIP, China Biology Medicine disc, China National Knowledge Infrastructure, Wanfang Database, Cochrane Library, PubMed, Embase, Web of Science, PsycINFO. The search period was from database establishment to August 15, 2024. Literature quality was assessed using the quality evaluation criteria for qualitative research of the Australia Joanna Briggs Institute Evidence-Based Health Care Center, and data integration and analysis was performed using the aggregative synthesis approach.Results:A total of 11 articles were included. Thirty-four findings were distilled, similar findings were grouped into nine new categories, and three integrative findings were consolidated for the coexistence of positive and negative emotions, the need for multifaceted social support, and strategies to cope with negative emotions during subsequent pregnancy.Conclusions:Women with fetal loss have a complex psychological experience during subsequent pregnancy. Medical and nursing staff should focus on this group of people, identify the psychological state of women in a timely and accurate manner, and provide them with targeted support to help them get through their pregnancy.

Objective To establish the fingerprint of Xuemai Shutong granules by UPLC-ELSD and determine the contents of 9 components in the preparation simultaneously.Methods The UPLC-ELSD was used to establish the fingerprint of Xuemai Shutong granules,and determine the content of its 9 components.The similarity evaluation system,systematic,cluster analysis,principal component analysis and orthogonal partial least squares discriminant analysis were used to evaluate the quality of different batches of preparation.Results The similarity degrees of UPLC-ELSD fingerprints of 11 batches of Xuemai Shutong granules were from 0.929 to 0.978,17 common peaks were calibrated,of which 11 peaks were identified:peak 3(notoginsenoside R1),peak 4[ginsenoside Rg,(Re)],peak 5(notoginsenoside R2),peak 6(ginsenoside Rb,),peak 9(astragaloside Ⅳ),peak 10(ginsenoside Rk3),peak 11(ginsenoside Rh4),peak 12[20(S)-ginsenoside Rg3],peak 13[20(R)-ginsenoside Rg3],peak 14(ginsenoside Rk1),peak 15(ginsenoside Rg5).The stoichiometric analysis divided 11 batches of samples into 2 classes,and the 2 principal components in PCA analysis reflected the information of 17common peaks,10 peaks which affected the quality difference are screened out.The linear relationship of the 9 components was good in their respective quality ranges in the content analysis(r＞0.999 2),the average recovery rate were between 95.02％-97.78％and the RSD were 0.69％-1.70％(n=6).The contents of notoginsenoside R1,notoginsenoside R2,ginsenoside Rb1,astragaloside Ⅳ,ginsenoside Rh4,20(S)-ginsenoside Rg3,20(R)-ginsenoside Rg3,ginsenoside Rk1 ginsenoside Rg5 in the 11 batches of Xuemai Shutong granules were 0.087 5-0.187 6,0.494 3-0.688 6,0.448 1-0.705 5,0.192 2-0.270 8,1.492 5-2.077 6,0.316 0-0.463 8,0.254 5-0.382 0,0.117 6-0.163 9,3.407 7-4.706 4 mg·g-1,respectively.Conclusions The established fingerprint and content determination method was accurate and reliable,which can improve the quality standard of Xuemai Shutong granules,and provide reference for its overall quality evaluation.

Objective:To explore the role of LncRNA NKILA/NF-κB signal pathway in the injury of keratinocytes in oral lichen planus(OLP).Methods:Immortalized human epidermal cells(HaCaTs)were induced by bacterial lipopolysaccharide(LPS)to establish an in vitro cell model of OLP.HaCaTs stably overexpressing NKILA were constructed by lentivirus method.HaCaTs were divided into 4 groups:Control group,Control+LPS group,empty vector infected with lentivirus(NC)+LPS group,overexpressed NKILA(OE)+LPS group.Cell proliferation,apoptosis,total superoxide dismutase(SOD)activity,lipid malondialdehyde oxide(MDA),reactive oxygen species(ROS),expression of related inflammatory factors,p65(nuclear,mass)and NF-κB signaling pathway related protein expression and p65 expression and localization were respectively detected.Results:Compared with Control group,the expression of NKILA,cell proliferation activity and SOD enzyme activity in Control+LPS group were significantly de-creased,while the apoptosis rate,MDA,ROS,IL-6,IL-1β,TNF-α and p65(nuclear and plasma)expression levels were signifi-cantly up-regulated(P＜0.05).Compared with Control+LPS group,the cell proliferation activity and SOD activity were increased in OE+LPS group,and the expression levels of cell apoptosis,MDA,ROS,IL-6,IL-1β,TNF-α and p65(nuclear and plasma)were significantly decreased(P＜0.05),and the localization of p65 protein in the nucleus was significantly decreased in OE+LPS group.Conclusion:LncRNA NKILA may reduce the damage of keratinocytes in oral lichen planus by inhibiting NF-κB signal pathway.

Objective:To systematically evaluate the psychological experience of women with fetal loss during subsequent pregnancy and to inform future care for women with fetal loss during subsequent pregnancy.Methods:Qualitative studies on the psychological experience of women with fetal loss during subsequent pregnancy was electronically searched in Chinese and English databases such as VIP, China Biology Medicine disc, China National Knowledge Infrastructure, Wanfang Database, Cochrane Library, PubMed, Embase, Web of Science, PsycINFO. The search period was from database establishment to August 15, 2024. Literature quality was assessed using the quality evaluation criteria for qualitative research of the Australia Joanna Briggs Institute Evidence-Based Health Care Center, and data integration and analysis was performed using the aggregative synthesis approach.Results:A total of 11 articles were included. Thirty-four findings were distilled, similar findings were grouped into nine new categories, and three integrative findings were consolidated for the coexistence of positive and negative emotions, the need for multifaceted social support, and strategies to cope with negative emotions during subsequent pregnancy.Conclusions:Women with fetal loss have a complex psychological experience during subsequent pregnancy. Medical and nursing staff should focus on this group of people, identify the psychological state of women in a timely and accurate manner, and provide them with targeted support to help them get through their pregnancy.

Objective:To understand the current status of the actual protective effect of respiratory protective equipment (RPE) for workers exposed to trichloroethylene (TCE), and to explore the factors affecting the actual protective effect.Methods:From July to December 2023, a total of 75 workers occupationally exposed to TCE from 21 hardware and electronics manufacturing facilities in a province were selected as research objects by convenient sampling method. Workplace protection factor (WPF) was used as an index to evaluate the actual protective effect of workers' RPE. The concentration of TCE inside and outside the RPE was detected to calculate WPE, and the temperature, humidity and wind speed near the working place were measured, as well as the forced vital capacity, respiratory rate, heart rate and other indicators of the worker were measured. The log-transformed WPF value (lgWPF) followed a normal distribution. One-sample t-test was used to compare the difference between the mean lgWPF and the log value of the assigned protection factor (APF) of the half mask (lgAPF=1). Multiple linear regression model was used to investigate the influencing factors of lgWPF. Results:The lgWPF of 75 TCE-exposed workers ranged from 0.40 to 1.32 (0.84±0.22). The mean of lgWPF was lower than that of lgAPF, and the difference was statistically significant ( t=-6.37, P<0.001). After adjusting for confounding factors, the results of multiple linear regression showed that humidity, forced vital capacity and respiratory rate were negatively correlated with lgWPF ( β=-0.008, -0.079, -0.021, P<0.05) . Conclusion:The actual protective efficacy of RPE among workers exposed to TCE is suboptimal. High humidity, elevated forced vital capacity, and increased respiratory rate may be contributing factors to the diminished protective performance of RPE.

Objective To evaluate the intraoperative identification of ectopic parathyroid tissue in the central neck region using autofluorescence point-spectral analysis(AFPSA)combined with immune colloidal gold technique(ICGT),for guiding total parathyroidectomy(TPTX)or clean parathyroidectomy(CPTX)in the management of secondary hyperparathyroidism(SHPT).Methods Retrospectively collected and compared the clinical data of 64 patients with SHPT from October 2019 to June 2023.In the observation group,TPTX was performed as the initial procedure in 36 cases,followed by sampling of suspicious targets using AFPSA in the central neck area and subsequent detection through ICGT.CPTX was then conducted if a positive result was obtained.On the other hand,the control group consisted of 28 cases where only TPTX was performed without any additional tests during surgery.The surgical data,parathyroid hormone(PTH)levels,blood calcium levels,blood phosphorus levels,alkaline phosphatase(ALP)levels,regression of clinical symptoms,changes in parathyroid function and occurrence of hypocalcemia were compared between these two groups.Results In the observation group,there were 9 cases of AFPSA-ICGT positivity,including 2 left-sided cases,4 right-sided cases,and 3 thymic cases;among these posi-tive cases,there were a total of 10 locations with mildly hyperplastic or nonhyperplastic microscopic parathyroid tissue.The difference in the number of total parathyroid glands removed(including ectopic)between the two groups was statistically significant(P<0.05).At both 3 and 6 months postoperatively,ALP levels in the observation group were significantly lower than those in the control group(P<0.01 and P<0.001 respectively);at 6 months postoperatively,differences in PTH and blood phosphorus levels between the two groups were also statistically significant(P<0.05 and P<0.001 respectively).Joint bone pain and skin itching recurred in some patients within the control group at six months after surgery(P<0.05),whereas recurrence of SHPT was less frequent within the observation group compared to controls(P<0.05);however,no statistically significant differences were observed regarding postoperative hypoparathyroidism or hyperparathyroidism as well as hypocalcemia between either groups.Conclusion The AFPSA-ICGT intraoperative test can be utilized to guide surgery for SHPT,enabling accurate and efficient identification as well as safe targeting of parathyroid tissues that may not exhibit obvious hyperplasia in the central cervical region.

OBJECTIVE: To explore the clinical application value of mineralized collagen (MC) bone scaffolds in repairing various types of skull defects, and to assess the suitability and repair effectiveness of porous MC (pMC) scaffolds, compact MC (cMC) scaffolds, and biphasic MC composite (bMC) scaffolds. METHODS: A retrospective analysis was conducted on the clinical data of 105 patients who underwent skull defect repair with pMC, cMC, or bMC between October 2014 and April 2022. The cohort included 63 males and 42 females, ranging in age from 3 months to 55 years, with a median age of 22.7 years. Causes of defects included craniectomy after traumatic surgery in 37 cases, craniotomy in 58 cases, tumor recurrence or intracranial hemorrhage surgery in 10 cases. Appropriate MC scaffolds were selected based on the patient's skull defect size and age: 58 patients with defects <3 cm² underwent skull repair with pMC (pMC group), 45 patients with defects ≥3 cm² and aged ≥5 years underwent skull repair with cMC (cMC group), and 2 patients with defects ≥3 cm² and aged <5 years underwent skull repair with bMC (bMC group). Postoperative clinical follow-up and imaging examinations were conducted to evaluate bone regeneration, the biocompatibility of the repair materials, and the occurrence of complications. RESULTS: All 105 patients were followed up 3-24 months, with an average of 13 months. No material-related complication occurred in any patient, including skin and subcutaneous tissue infection, excessive ossification, and rejection. CT scans at 6 months postoperatively showed bone growth in all patients, and CT scans at 12 months postoperatively showed complete or near-complete resolution of bone defects in all patients, with 58 cases repaired in the pMC group. The CT values of the defect site and the contralateral normal skull bone in the pMC group at 12 months postoperatively were (1 123.74±93.64) HU and (1 128.14±92.57) HU, respectively, with no significant difference ( t=0.261, P=0.795). CONCLUSION MC exhibits good biocompatibility and osteogenic induction ability in skull defect repair. pMC is suitable for repairing small defects, cMC is suitable for repairing large defects, and bMC is suitable for repairing pediatric skull defects.
Humans ; Tissue Scaffolds ; Male ; Female ; Collagen ; Retrospective Studies ; Adult ; Child ; Adolescent ; Middle Aged ; Child, Preschool ; Skull/surgery* ; Young Adult ; Infant ; Plastic Surgery Procedures/methods* ; Tissue Engineering/methods* ; Craniotomy/methods* ; Bone Regeneration ; Treatment Outcome ; Porosity ; Biocompatible Materials