High-performance phototheranostics with combined photothermal therapy and photoacoustic imaging have been considered promising approaches for efficient cancer diagnosis and treatment. However, developing phototheranostic materials with efficient photothermal conversion efficiency (PCE), especially over the second near-infrared window (NIR-II, 1000-1700 nm), remains challenging. Herein, we report an ultraefficient NIR-II-activated nanomedicine with phototheranostic and vaccination capability for highly efficient in vivo tumor elimination and metastasis inhibition. The NIR-II nanomedicine of a semiconducting biradical oligomer with a motor-flexible design was demonstrated with a record-breaking PCE of 87% upon NIR-II excitation. This nanomedicine inherently features extraordinary photothermal stability, good biocompatibility, and excellent photoacoustic performance, contributing to high-contrast photoacoustic imaging in living mice and high-performance photothermal elimination of tumors. Moreover, a whole-cell vaccine based on a NIR-II nanomedicine with NIR-II-activated performance was further designed to remotely activate the antitumor immunologic memory and effectively inhibit tumor occurrence and metastasis in vivo, with good biosafety. Thus, this work paves a new avenue for designing NIR-II active semiconducting biradical materials as a promising theranostics platform and further promotes the development of NIR-II nanomedicine for personalized cancer treatment.

Objective:To prepare mesothelin-loaded paclitaxel (PTX) phase change nanoparticles and evaluate their targeting effect and therapeutic effect on ovarian cancer.Methods:PTX-loaded phase-change nanoparticles PTX-NPs were prepared by the thin-film hydration method, and targeted mesothelin-loaded PTX phase-change nanoparticles Ab-PTX-NPs were prepared by attaching anti-mesothelin antibody to the nanoparticles using the biotin-affinity method. Zeta potential and particle size were determined by applying a zeta potential and a particle size analyzer, and the encapsulation rate and the amount of drug loading of PTX was measured by applying a UV spectrophotometer. Flow cytometry was used to detect the connectivity of anti-mesothelin antibody with PTX-NPs. The phase transition of Ab-PTX-NPs was induced by low-power focused ultrasound, and its ultrasonography imaging was observed; laser scanning confocal microscopy and flow cytometry were used to detect the targeting ability of Ab-PTX-NPs on ovarian cancer SKOV3 cells. The targeting and killing ability of Ab-PTX-NPs on ovarian cancer SKOV3 cells was observed by in vitro targeting assay and apoptosis detection assay. The ovarian cancer model of BALB/c nude mice was constructed to observe the distribution of Ab-PTX-NPs in vivo as well as the effects on blood biochemistry and important organs of nude mice. Results:Ab-PTX-NPs were successfully prepared with a zeta potential of -(8.37±2.71) mV, a diameter of (690.46±28.75) nm, an encapsulation rate of (88.2±4.4)% for PTX, a drug loading capacity of (27.3±0.9)%, and a linkage rate of (94.9±2.8)% between anti-mesothelin antibody and PTX-NPs. Low-intensity focused ultrasound could successfully induce phase transition of Ab-PTX-NPs to realize ultrasonography imaging, and 6 W was the optimal excitation power for low-intensity focused ultrasound. Ab-PTX-NPs showed excellent targeting and killing ability to SKOV3 cells, and the apoptosis and necrosis rate of SKOV3 cells in the Ab-PTX-NPs group reached 79.6%. In vivo imaging showed that the fluorescence intensity at the tumor site of nude mice in the Ab-PTX-NPs group was significantly higher than that in the PTX-NPs group. Biosafety assay showed that 15 d after Ab-PTX-NPs administration, the serum aspartate aminotransferase, alanine aminotransferase, creatine kinase, low-density lipoprotein, blood creatinine, and urea nitrogen concentrations of nude mice were (174.163±20.596)U/L, (33.297±2.573)U/L, (1 959.978±72.212)U/L, (22.033±5.030)μmol/L, (0.393±0.058)mmol/L, and (26.405±4.957)mmol/L, which were not significantly different from those of the phosphate buffer solution (PBS) group, the NPs group, and the PTX-NPs group. The organs such as the heart, the liver, the spleen, the lungs and the kidneys remained intact, and what was seen by the naked eye and microscope was similar with those of the PBS group, NPs group and PTX-NPs group. Conclusion:Ab-PTX-NPs were successfully prepared, which had good ovarian cancer targeting ability and killing effect and effectively reduced the toxicity of PTX.

Acute respiratory distress syndrome(ARDS)is a common respiratory emergency,but current clinical treatment remains at the level of symptomatic support and there is a lack of effective targeted treatment measures.Our previous study confirmed that inhalation of hydrogen gas can reduce the acute lung injury of ARDS,but the application of hydrogen has flammable and explosive safety concerns.Drinking hydrogen-rich liquid or inhaling hydrogen gas has been shown to play an important role in scavenging reactive oxygen species and maintaining mitochondrial quality control balance,thus improving ARDS in patients and animal models.Coral calcium hydrogenation(CCH)is a new solid molecular hydrogen carrier prepared from coral calcium(CC).Whether and how CCH affects acute lung injury in ARDS re-mains unstudied.In this study,we observed the therapeutic effect of CCH on lipopolysaccharide(LPS)induced acute lung injury in ARDS mice.The survival rate of mice treated with CCH and hydrogen inhalation was found to be comparable,demonstrating a significant improvement compared to the untreated ARDS model group.CCH treatment significantly reduced pulmonary hemorrhage and edema,and improved pulmonary function and local microcirculation in ARDS mice.CCH promoted mitochon-drial peripheral division in the early course of ARDS by activating mitochondrial thioredoxin 2(Trx2),improved lung mitochondrial dysfunction induced by LPS,and reduced oxidative stress damage.The results indicate that CCH is a highly efficient hydrogen-rich agent that can attenuate acute lung injury of ARDS by improving the mitochondrial function through Trx2 activation.

Acute respiratory distress syndrome (ARDS) is a common respiratory emergency, but current clinical treatment remains at the level of symptomatic support and there is a lack of effective targeted treatment measures. Our previous study confirmed that inhalation of hydrogen gas can reduce the acute lung injury of ARDS, but the application of hydrogen has flammable and explosive safety concerns. Drinking hydrogen-rich liquid or inhaling hydrogen gas has been shown to play an important role in scavenging reactive oxygen species and maintaining mitochondrial quality control balance, thus improving ARDS in patients and animal models. Coral calcium hydrogenation (CCH) is a new solid molecular hydrogen carrier prepared from coral calcium (CC). Whether and how CCH affects acute lung injury in ARDS remains unstudied. In this study, we observed the therapeutic effect of CCH on lipopolysaccharide (LPS) induced acute lung injury in ARDS mice. The survival rate of mice treated with CCH and hydrogen inhalation was found to be comparable, demonstrating a significant improvement compared to the untreated ARDS model group. CCH treatment significantly reduced pulmonary hemorrhage and edema, and improved pulmonary function and local microcirculation in ARDS mice. CCH promoted mitochondrial peripheral division in the early course of ARDS by activating mitochondrial thioredoxin 2 (Trx2), improved lung mitochondrial dysfunction induced by LPS, and reduced oxidative stress damage. The results indicate that CCH is a highly efficient hydrogen-rich agent that can attenuate acute lung injury of ARDS by improving the mitochondrial function through Trx2 activation.

The classification of stoma skin barriers varies based on their specific features. The curvature design of convex skin barriers provides a secure and effective seal for patients with flat, retracted stomas or peristomal skin folds. The secure sealing ability of convex skin barriers is attributed to several critical structural components. Although convex skin barriers offer many clinical advantages, there is currently no unified standard for measuring their characteristics, resulting in confusion among healthcare professionals when selecting stoma care products. To address this issue, the 2021 International Stoma Care Expert Meeting proposed the Expert Consensus on Characteristics of Convex Skin Barriers and Clinical Application, which clearly defines five essential properties and clinical application guidelines for convex barriers. However, as most consensus contributors are from Europe and North America, its applicability in Chinese healthcare settings may be limited. Therefore, this paper provides a detailed interpretation of the five characteristics and clinical application statements of convex skin barriers, aiming to offer practical guidance to clinical nurses in selecting appropriate convex products and managing stoma-related complications.

Objective To explore the optimal body position of patients during rigid laryngoscopy.Methods 120 outpatients who underwent rigid laryngoscopy from December 2023 to March 2024 were divided into the conventional body position group(58 cases)and the anterior tilted position group(62 cases)by the random number table method.Patients in the conventional body position group were examined in the conventional body position(upright lower head position)and patients in the anterior tilted position group were examined in the anterior tilted position(body tilted forward by 60° and jaw lifted).The vocal folds were scored on the Friedman scale,the visual analogue scale(VAS)score was used to evaluate the comfortable degree of patients during the examination,the incidence of gag reflex sensitivity and the rate of complete pharyngeal exposure were compared between the two groups of patients.Results In the conventional body position group,there were 26 cases of Friedman's difficult exposure and 32 cases of easy exposure.The VAS scores of difficult exposure and easy exposure patients were 2.5(1.0,5.8)and 1.0(1.0,3.0),respectively;The incidence of gag reflex sensitivity was 42.3%and 34.4%,respectively;and the rates of complete pharyngeal exposure were 76.9%and 100.0%,respectively.In the anterior tilted position group,there were 28 cases of Friedman difficult exposure and 34 cases of easy exposure.The VAS scores of patients with difficult and easy exposure were 1.5(1.0,7.0)and 2.0(1.0,4.0),respectively;The incidence of gag reflex sensitivity was 46.4%and 29.4%,respectively;And the rates of complete pharyngeal exposure were 82.1%and 91.2%,respectively;The differences were not statistically significant(P>0.05).Conclusion When rigid laryngoscopy is performed in the upright lower head position or anteriorly tilted position,there is no significant difference in the comfortable degree scores,incidence of gag reflex sensitivity,and the rate of complete pharyngeal exposure in the patients in the two positions,and the examiners can choose the appropriate position according to their own examination habits.

After ostomy surgery, patients lose the ability to control their anal sphincter, relying on ostomy pouches for excretion. Convex baseplates offer several advantages, including preventing leakage, reducing the risk of stoma and peripheral skin complications, and adapting to the dynamic stoma shapes caused by peristaltic expansion and contraction of the stoma. This article reviews the structure and features of convex baseplates, usage considerations, existing challenges, and future prospects, aiming to provide a reference for the standardized clinical use of convex baseplates and to improve patient health outcomes.

Objective To explore the optimal body position of patients during rigid laryngoscopy.Methods 120 outpatients who underwent rigid laryngoscopy from December 2023 to March 2024 were divided into the conventional body position group(58 cases)and the anterior tilted position group(62 cases)by the random number table method.Patients in the conventional body position group were examined in the conventional body position(upright lower head position)and patients in the anterior tilted position group were examined in the anterior tilted position(body tilted forward by 60° and jaw lifted).The vocal folds were scored on the Friedman scale,the visual analogue scale(VAS)score was used to evaluate the comfortable degree of patients during the examination,the incidence of gag reflex sensitivity and the rate of complete pharyngeal exposure were compared between the two groups of patients.Results In the conventional body position group,there were 26 cases of Friedman's difficult exposure and 32 cases of easy exposure.The VAS scores of difficult exposure and easy exposure patients were 2.5(1.0,5.8)and 1.0(1.0,3.0),respectively;The incidence of gag reflex sensitivity was 42.3%and 34.4%,respectively;and the rates of complete pharyngeal exposure were 76.9%and 100.0%,respectively.In the anterior tilted position group,there were 28 cases of Friedman difficult exposure and 34 cases of easy exposure.The VAS scores of patients with difficult and easy exposure were 1.5(1.0,7.0)and 2.0(1.0,4.0),respectively;The incidence of gag reflex sensitivity was 46.4%and 29.4%,respectively;And the rates of complete pharyngeal exposure were 82.1%and 91.2%,respectively;The differences were not statistically significant(P>0.05).Conclusion When rigid laryngoscopy is performed in the upright lower head position or anteriorly tilted position,there is no significant difference in the comfortable degree scores,incidence of gag reflex sensitivity,and the rate of complete pharyngeal exposure in the patients in the two positions,and the examiners can choose the appropriate position according to their own examination habits.

After ostomy surgery, patients lose the ability to control their anal sphincter, relying on ostomy pouches for excretion. Convex baseplates offer several advantages, including preventing leakage, reducing the risk of stoma and peripheral skin complications, and adapting to the dynamic stoma shapes caused by peristaltic expansion and contraction of the stoma. This article reviews the structure and features of convex baseplates, usage considerations, existing challenges, and future prospects, aiming to provide a reference for the standardized clinical use of convex baseplates and to improve patient health outcomes.

The classification of stoma skin barriers varies based on their specific features. The curvature design of convex skin barriers provides a secure and effective seal for patients with flat, retracted stomas or peristomal skin folds. The secure sealing ability of convex skin barriers is attributed to several critical structural components. Although convex skin barriers offer many clinical advantages, there is currently no unified standard for measuring their characteristics, resulting in confusion among healthcare professionals when selecting stoma care products. To address this issue, the 2021 International Stoma Care Expert Meeting proposed the Expert Consensus on Characteristics of Convex Skin Barriers and Clinical Application, which clearly defines five essential properties and clinical application guidelines for convex barriers. However, as most consensus contributors are from Europe and North America, its applicability in Chinese healthcare settings may be limited. Therefore, this paper provides a detailed interpretation of the five characteristics and clinical application statements of convex skin barriers, aiming to offer practical guidance to clinical nurses in selecting appropriate convex products and managing stoma-related complications.