Microwave thermotherapy(MWTT),as a treatment for tumors,lacks specificity and requires sensitizers.Most reported microwave sensitizers are single metal-organic frameworks(MOFs),which must be loaded with ionic liquids to enhance the performance in MWTT.Meanwhile,MWTT is rarely combined with other treatment modalities.Here,we synthesized a novel Fe-Cu bimetallic organic framework FeCuMOF(FCM)by applying a hydrothermal method and further modified it with methyl polyethylene glycol(mPEG).The obtained FCM@PEG(FCMP)showed remarkable heating performance under low-power microwave irradiation;it also acted as a novel nanospheres enzyme to catalyze H2O2 decompo-sition,producing abundant reactive oxygen species(ROS)to deplete glutathione(GSH)and prevent ROS clearance from tumor cells during chemodynamic treatment.The FCMP was biodegradable and demonstrated excellent biocompatibility,allowing it to be readily metabolized without causing toxic effects.Finally,it was shown to act as a suitable agent for T2 magnetic resonance imaging(MRI)in vitro and in vivo.This new bimetallic nanostructure could successfully realize two tumor treatment modalities(MWTTand chemodynamic therapy)and dual imaging modes(T2 MRI and microwave thermal imaging).Our findings represent a breakthrough for integrating the diagnosis and treatment of tumors and pro-vides a reference for developing new microwave sensitizers.

[摘 要] 目的：探讨山柰酚诱导人非小细胞肺癌（NSCLC）NCI-H1650细胞发生自噬及其机制。方法：常规培养NCI-H1650细胞，用不同浓度山柰酚处理细胞，用CCK-8法、MTT法以及EdU法检测山柰酚对NCI-H1650细胞增殖能力的影响，用自噬双标记腺病毒mCherry-EGFR-LC3感染实验检测山柰酚对NCI-H1650细胞发生自噬的影响，用WB法检测山柰酚处理后NCI-H1650细胞中自噬相关蛋白及Met/PI3K/Akt/mTOR信号通路相关蛋白的表达，用qPCR法检测山柰酚处理后NCI-H1650细胞中Met mRNA的表达。采用荧光素酶标记A549-luc细胞建立裸鼠移植瘤模型后用山柰酚进行处理，用活体动物成像技术观察移植瘤生长情况，用WB法检测移植瘤组织中自噬相关蛋白以及Met/PI3K/Akt/mTOR信号通路相关蛋白的表达。结果：山柰酚能显著抑制NCI-H1650细胞的增殖能力（P<0.05），山柰酚处理后NCI-H1650细胞内的自噬小体数量明显增加（P<0.05）、自噬标志蛋白LC3B和beclin1表达均明显上调（均P<0.05）、P62表达明显下调（P<0.05），山柰酚可明显抑制NCI-H1650细胞中Met mRNA和蛋白的表达（均P<0.05）、抑制p-PI3K p85、PI3K p85、p-Akt和p-mTOR蛋白表达（均P<0.05）。山柰酚抑制A549细胞裸鼠移植瘤的生长（P<0.05）和影响其体内自噬、Met/PI3K/Akt/mTOR通路相关蛋白的表达（均P<0.05）。结论：山柰酚通过影响Met/PI3K/Akt/mTOR通路诱导NSCLC NCI-H1650细胞发生自噬，进而抑制其增殖能力。

Neonates born through meconium-stained amniotic fluid (MSAF) may develop complications including meconium aspiration syndrome, persistent pulmonary hypertension of newborn and death. The approach to the resuscitation of these neonates has significantly evolved for the past few decades. Initially, under direct visualization technique, neonates with MSAF were commonly suctioned below the vocal cords soon after delivery. Since 2015, Neonatal Resuscitation Program (NRP^®) of the American Academy of Pediatrics has recommended against "routine" endotracheal suctioning of non-vigorous neonates with MSAF but favored immediate resuscitation with positive pressure ventilation via face-mask bagging. However, the China neonatal resuscitation 2021 guidelines continue to recommend routine endotracheal suctioning of non-vigorous neonates born with MSAF at birth. This review article discusses the differences and the rationales in the approach in the resuscitation of neonates with MSAF between Chinese and American NRP^® guidelines over the past 60 years.
Female ; Infant, Newborn ; Humans ; Child ; Meconium Aspiration Syndrome/therapy* ; Meconium ; Resuscitation ; Amniotic Fluid ; Intubation, Intratracheal/methods* ; Infant, Newborn, Diseases ; China

Radical gastrectomy combined with perioperative comprehensive treatment is the main curable strategy for gastric cancer patients, and postoperative complications are the issue that gastric surgeons have to face. Complications not only affect the short-term postoperative recovery, but also facilitate tumor recurrence or metastasis, thus resulting in poor prognosis. Therefore, unifying the diagnostic criteria for postoperative complications, bringing the surgeons' attention to complications, and understanding the potential mechanism of complications undermining long-term survival, will be helpful to the future improvement of the clinical diagnosis and treatment as well as prognosis for gastric cancer patients in China. Meanwhile, surgeons should constantly hone their operative skills, improve their sense of responsibility and empathy, and administer individualized perioperative management based on patients' general conditions, so as to minimize the occurrence of postoperative complications and their influence on prognosis.
Humans ; Stomach Neoplasms/pathology* ; Empathy ; Neoplasm Recurrence, Local/surgery* ; Prognosis ; Gastrectomy/methods* ; Postoperative Complications/etiology* ; Surgeons ; Retrospective Studies

Humans ; Herpesvirus 4, Human ; Epstein-Barr Virus Infections/complications* ; Cholangiocarcinoma/pathology* ; Carcinoma, Squamous Cell ; Bile Ducts, Intrahepatic/pathology* ; Bile Duct Neoplasms/pathology*

Objective: To investigate the histopathological and immunohistochemical characteristics of benign apocrine cystic papillary hyperplasia of the breast with loss of myoepithelial cell layer. Methods: The clinical data, histopathological features and immunohistochemical profile of patients with benign apocrine cystic papillary hyperplasia of breast with loss of myoepithelial cell layer from January 2016 to December 2021 were examined, in which six patients were identified. Results: All six patients were female, aged 36-61 years (median 46 years), who presented with a breast mass; three cases were from the left breast and three cases were from the right breast. Microscopic examination of all cases showed breast hyperplasia with apocrine cysts, accompanied by different degrees of micropapillary and papillary hyperplasia of apocrine cells. One case was associated with lobular carcinoma in situ, and one case was associated with apocrine ductal carcinoma in situ with intraductal dissemination in adenosis. Immunohistochemical staining of CK5/6, p63, SMA, SMMHC, Calponin and CD10 showed complete absence of myoepithelial cell layer surrounding ducts in apocrine cystic papillary hyperplasia. Conclusions: The myoepithelial cells of apocrine cystic papillary hyperplasia of the breast may undergo abnormal changes and may even be completely lost. The diagnosis should be comprehensively considered along with cytomorphological and histological features to avoid overdiagnosis.
Female ; Humans ; Epithelial Cells/pathology* ; Hyperplasia/pathology* ; Papilloma/pathology* ; Adult ; Middle Aged ; Mammary Glands, Human/pathology* ; Breast Neoplasms/pathology* ; Carcinoma, Lobular/complications* ; Carcinoma, Ductal/complications*

Humans ; B7-H1 Antigen ; Neoplasms/genetics*