Intestinal epithelium-derived BATF3 promotes colitis-associated colon cancer through facilitating CXCL5-mediated neutrophils recruitment

Inflammation is a critical player in the development and progression of colon cancer. Basic leucine zipper transcription factor ATF-like 3 (BATF3) plays an important role in infection and tumor immunity through regulating the development of conventional type 1 dendritic cells (cDC1s). However, the function of BATF3 in colitis and colitis-associated colon cancer (CAC) remains unclear. Here, BATF3 wild-type and knockout mice were used to construct an AOM/DSS-induced CAC model. In addition, DSS-induced chronic colitis, bone marrow cross-transfusion (BMT), neutrophil knockout, and other animal models were used for in-depth research. We found that BATF3 deficiency in intestinal epithelial cells rather than in cDC1s inhibited CAC, which was depended on inflammatory stimulation. Mechanistically, BATF3 directly promoted transcription of CXCL5 by forming a heterodimer with JunD, and accelerated the recruitment of neutrophils through the CXCL5-CXCR2 axis, ultimately increasing the occurrence and development of CAC. Tissue microarray and TCGA data also indicated that high expression of BATF3 was positively correlated with poor prognosis of colorectal cancer and other inflammation-related tumors. In summary, our results demonstrate that intestinal epithelial-derived BATF3 relies on inflammatory stimulation to promote CAC, and BATF3 is expected to be a novel diagnostic indicator for colitis and CAC.

[Observation and analysis of systemic reactions to house dust mite subcutaneous immunotherapy in 362 patients with allergic rhinitis]

Objective: To investigate the frequency and severity of systemic reactions (SRs) to standardized house dust mite subcutaneous immunotherapy (SCIT) in patients with perennial allergic rhinitis (AR), and to analyze the clinical risk factors. Methods: The clinical data of 362 patients including 209 males and 153 females, aged from 5 to 55 years old receiving SCIT at the Department of Otorhinolaryngology, the Third People's Hospital of Changzhou were collected from May 2014 to July 2017. The SRs were classified as early-onset and delayed-onset, and 4 grades (grade Ⅰ to Ⅳ) to assess severity. The records of SRs were retrospectively analyzed, including the numbers/frequencies, symptoms and signs, onset of reaction and treatment. And the relationships between SRs and patient's age, gender, allergen injection dose, accompanied allergic diseases were explored. All the statistical analyses were conducted using SPSS 19.0. Results: There were 57 cases (15.75%) of SRs in 362 patients. All the patients received a total of 12 308 injections and 111 SRs (0.90%) were observed. Among them, 31 (27.93%) were early-onset reactions and 80 (72.07%) were delayed-onset reactions; most of the SRs were grade Ⅰ reactions (n=83, 74.78%), followed by grade Ⅱ (n=25, 22.52%), grade Ⅲ (n=3, 2.70%), and no fatal reactions occurred. The incidence of SRs in patients>14 years old was higher than that in patients ≤14 years old according to the number of cases and injections (35.14% vs 13.54%, 2.34% vs 0.76%, χ(2) value was 11.679, 28.162, respectively, all P<0.05), but no significant differences of SRs were observed in gender (18.66% vs 11.76%, 5.98% vs 5.62%, χ(2) value was 3.166, 0.095, respectively, all P>0.05). Fifteen SRs (13.51%) occurred during the build-up phase and 96 (86.49%) during the maintenance phases. SRs could occur in lots of dose phases, and 95 (85.59%) were distributed at high concentrations more than 40 000 SQ-U. The incidence of SRs in patients with multiple allergic diseases was significantly higher than that in patients with AR alone, with asthma or atopic dermatitis (30.67% vs 11.85%, χ(2)=15.875, P<0.001). Meanwhile, the incidence of SRs in patients with pure AR was also significantly lower than that in patients with other allergic diseases (5.26% vs 20.56%, χ(2)=13.783, P<0.001). Conclusions: The incidence of SRs is less than 1% according to the injection times, the severity of SRs is mostly slight, and the safety and tolerance are good during standardized house dust mite SCIT in perennial AR patients. Delayed-onset SRs are more common. The incidence of SRs is significantly correlated with age, high dose of allergen vaccine injection, and concomitant other allergic diseases (asthma, atopic dermatitis, etc).

MicroRNA-326 inhibits cell proliferative capacity and invasiveness through inhibiting the expression of ETS1 in nasopharyngeal carcinoma

OBJECTIVE

This study aims to detect microRNA-326 expression in nasopharyngeal carcinoma (NPC) tissues and cell lines and to explore the potential mechanism of microRNA-326 inhibiting the proliferative capacity and invasiveness of NPC cells.

PATIENTS AND METHODS

Quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) was performed to examine microRNA-326 expression in 40 cases of NPC tissue samples and cell lines. Meanwhile, microRNA-326 mimics were transfected into NPC cells to up-regulate microRNA-326 level. Next, the influence of microRNA-326 mimics on the proliferation and invasiveness of NPC cells was observed by Cell Counting Kit-8 (CCK-8) assay and transwell assay, respectively. Bioinformatics analysis was applied to search for target genes which may have direct effects on microRNA-326. An EST1 luciferase reporter vector containing microRNA-326 binding site was constructed and the binding relation between ETS1 and microRNA-326 was detected by Dual-Luciferase reporting assay. Lastly, the underlying mechanism of microRNA-326 and ETS1 in NPC was further verified via cell reverse experiments.

RESULTS

Compared with control group, microRNA-326 expression was found remarkably decreased both in NPC tissue specimens and cell lines. The low expression of microRNA-326 could predict poor prognosis of patients with NPC. In vitro cell experiments revealed that overexpression of microRNA-326 remarkably inhibited the proliferative capacity and invasiveness of NPC cells. Bioinformatics analysis and Dual-Luciferase assay results suggested that microRNA-326 may bind to ETS1. Cell reverse assay indicated that inhibiting ETS1 expression partially reversed the changes in cell biological behavior induced by the down-regulation of microRNA-326 in CNE1 and 5-8F cell lines.

CONCLUSIONS

Overexpression of microRNA-326 in NPC cells could remarkably inhibit the proliferative capacity and invasiveness of NPC cells. In addition, microRNA-326 may participate in the development of NPC by inhibiting ETS1 expression.

A WRKY transcription factor, TaWRKY40-D, promotes leaf senescence associated with jasmonic acid and abscisic acid pathways in wheat

Leaf senescence is a complex and precise regulatory process that is correlated with numerous internal and environmental factors. Leaf senescence is tightly related to the redistribution of nutrients, which significantly affects productivity and quality, especially in crops. Evidence shows that the mediation of transcriptional regulation by WRKY transcription factors is vital for the fine-tuning of leaf senescence. However, the underlying mechanisms of the involvement of WRKY in leaf senescence are still unclear in wheat. Using RNA sequencing data, we isolated a novel WRKY transcription factor, TaWRKY40-D, which localizes in the nucleus and is basically induced by the progression of leaf senescence. TaWRKY40-D is a promoter of natural and dark-induced leaf senescence in transgenic Arabidopsis thaliana and wheat. We also demonstrated a positive response of TaWRKY40-D in wheat upon jasmonic acid (JA) and abscisic acid (ABA) treatment. Consistent with this, the detached leaves of TaWRKY40-D VIGS (virus-induced gene silencing) wheat plants showed a stay-green phenotype, while TaWRKY40-D overexpressing Arabidopsis plants showed premature leaf senescence after JA and ABA treatment. Moreover, our results revealed that TaWRKY40-D positively regulates leaf senescence, possibly by altering the biosynthesis and signalling of JA and ABA pathway genes. Together, our results suggest a new regulator of JA- and ABA-related leaf senescence, as well as a new candidate gene that can be used for molecular breeding in wheat.

Normal range of serum potassium, prevalence of dyskalaemia and associated factors in Chinese older adults: a cross-sectional study

OBJECTIVE

To investigate the normal range of serum potassium, the prevalence of dyskalaemia and the associated factors in Chinese older adults.

DESIGN

A cross-sectional study conducted from September 2017 to March 2018.

SETTING

Forty-eight community elderly care facilities in four regions in northern China.

PARTICIPANTS

A total of 1266 (308 apparently healthy and 958 unhealthy) participants 55 years or older and with fasting serum potassium measured.

MAIN OUTCOME MEASURES AND METHODS

Serum potassium <3.5 mEq/L and >5.5 mEq/L (guidelines definition) and <2.5th and >97.5th percentiles of the distribution among healthy participants (our study definition) were both used to define hypokalaemia and hyperkalaemia, respectively. Multivariable generalised estimating equation models were used to adjust for clustering effect in the analyses of factors associated with risk of dyskalaemia and with variations in serum potassium.

RESULTS

The study participants had a mean age of 70 (8.8) years. Among apparently healthy participants, the 2.5th and 97.5th percentiles of serum potassium distribution were 3.7 mEq/L and 5.3 mEq/L, respectively. Using the study definition, the prevalence of hyperkalaemia was 4.3% (95% CI 3.2% to 5.4%) and of hypokalaemia was 4.0% (95% CI 2.9% to 5.1%). Multivariable analyses showed that risk of hyperkalaemia was associated with unhealthy conditions (OR=2.21; 95% CI 1.17 to 4.18); risk of hypokalaemia was associated with unhealthy conditions (OR=2.56; 95% CI 1.05 to 6.23), older age (OR=1.70 per 10-year increase; 95% CI 1.04 to 2.79) and region (OR=16.87; 95% CI 6.41 to 44.38); and higher serum potassium was associated with male gender (mean difference (MD)=0.12; 95% CI 0.05 to 0.19) and estimated glomerular filtration rate <60 mL/min/1.73 m² (MD=0.29; 95% CI 0.12 to 0.46). Using the guidelines definition, hyperkalaemia accounted for 2.7% (1.8%, 3.6%) and hypokalaemia 1.8% (1.1%, 2.5%). Analyses of the associated factors showed similar trends.

CONCLUSIONS

The study suggested a narrower normal range of serum potassium for defining dyskalaemia, which was common in older Chinese and more prevalent in unhealthy ones.

TRIAL REGISTRATION NUMBER

NCT03290716; Pre-results.

[Comparison of different critical care scoring systems in prognosis evaluation of heat stroke]

Objective: To evaluate the prognostic value of different critical care scoring systems in 28-day survival rate of patients with heat stroke. Methods: A retrospective analysis was conducted on the clinical data of 71 patients with heat stroke admitted to the department of emergency medicine of Beijing Luhe Hospital. Capital Medical University from July 2015 to September 2018. The general information and the worst values of vital signs and related pathophysiological indicators within 24 hours were collected and the sequential organ failure assessment (SOFA) , multiple organ dysfunction (MODS) , simplified acute physiological scoreⅡ (SAPS Ⅱ) and acute physiology and chronic health evaluationⅡ (APACHE Ⅱ) were calculated. The patients were divided into the survival group (n=45) and the non-survival group (n=26) according to 28-day prognosis, and the clinical data and scores of the two groups were compared.The ROC curve was drawn to analyze the evaluation value of each scoring system on the survival rate of patients at 28-day. Kaplan-Meier method was used to plot the survival curve of patients. Results: There were no significant differences in age, sex, vital signs and laboratory parameters between two groups (P>0.05) . In non-survival patients, SOFA, SAPS Ⅱ, APACHE Ⅱ scores were significantly elevated in the survival group (P<0.05) . ROC curve analysis showed that the area under ROC curve (AUC) of SOFA score for predicting 28-day survival rate was the highest, which was significantly higher than the APACHE Ⅱ, SAPS Ⅱ, MODS score. When the best cut-off value of SOFA score was 9.0, the sensitivity was 84.6%, and the specificity was 71.1%. Kaplan-Meier survival analysis showed that 28-day survival rate after hospital discharge in patients with SOFA score<9 (n=27) was significantly higher than that in patients with SOFA score ≥9.0 (χ(2)=1.0, P<0.01) . Conclusion: SOFA, APACHE Ⅱ, SAPS Ⅱ on admission have been proved to have good prognostic ability to predict 28-day prognosis in heat stroke patients. Among them, SOFA score system has more accurate prediction value.

Development of a prognostic model based on an immunogenomic landscape analysis of colorectal cancer

Screening and therapeutic programs for colorectal cancer (CRC) are invasive or not effective and unable to meet patient needs. Major advances in immunogenomics may change this status but need more exploration. Differentially expressed genes and immune-related genes (IRGs) were identified by computational methods. A prognostic model was established and validated based on survival-related IRGs via stepwise multivariate Cox regression analysis. Nine IRGs were selected and identified as survival-related genes. A 7-gene prognostic model could offer a preliminary and valid determination of risk in CRC patients. The area under the curve of the receiver operating characteristic was 0.672. The 7-gene prognostic model might be used as a novel prognostic tool in CRC patients.

Relapsing polychondritis with isolated tracheal involvement and airway-only symptoms

Relapsing polychondritis (RP) is a rare autoimmune disorder, characterized by the inflammation of cartilaginous structures and proteoglycan-rich tissues. Due to its rarity and the notoriously variable presentations, the diagnosis of RP could be challenging. We report an unusual case of RP with isolated tracheal involvement and very non-specific symptoms of exertional dyspnoea and dry cough. The initial chest radiograph showed long-segment narrowing of the trachea, and the computed tomography of the chest revealed thickened cartilaginous walls of the trachea, while the posterior membranous portion was spared. The tracheal narrowing was readily observed under bronchoscopy. The patient was treated with oral prednisolone. Although the subsequent course was transiently complicated by an episode of severe Pneumocystis jirovecii pneumonia with acute respiratory distress syndrome, the patient overall responded well to systemic corticosteroid therapy. No new symptoms developed during a two-year follow-up.

A targeting black phosphorus nanoparticle based immune cells nano-regulator for photodynamic/photothermal and photo-immunotherapy

Photo-immunotherapy is a novel therapeutic approach against malignant tumors with minimal invasiveness. Herein, a targeting multifunctional black phosphorus (BP) nanoparticle, modified by PEGylated hyaluronic acid (HA), was designed for photothermal/photodynamic/photo-immunotherapy. In vitro and in vivo assays indicated that HA-BP nanoparticles possess excellent biocompatibility, stability, and sufficient therapeutic efficacy in the combined therapy of photothermal therapy (PTT) and photodynamic therapy (PDT) for cancer therapy. Moreover, the results of in vitro showed that HA-BP down-regulated the expression of CD206 (M2 macrophage marker) by 42.3% and up-regulated the ratio of CD86（M1 macrophage marker）by 59.6%, indicating that HA-BP nanoparticles have functions in remodeling tumor associated macrophages (TAMs) phenotype (from pro-tumor M2 TAMs to anti-tumor M1 macrophages). Fluorescence (FL) and photoacoustic (PA) multimodal imaging confirmed the selective accumulation of HA-BP in tumor site via both CD44⁺ mediated active targeting and passive EPR effect. In vitro and in vivo studies suggested that the combined therapy of PDT, PTT and immunotherapy using HA-BP could not only significantly inhibit original tumor but also induce immunogenic cell death (ICD) and release Damage-associated molecular patterns (DAMPs), which could induce maturation of dendritic cells (DCs) and activate effector cells that robustly evoke the antitumor immune responses for cancer treatment. This study expands the biomedical application of BP nanoparticles and displays the potential of modified BP as a multifunctional therapeutic platform for the future cancer therapy.

•

Novel HA-BP NPs were synthesized for photothermal/photodynamic/photo-immunotherapy.

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HA-BP NPs with size around 50 nm possess remarkable enhancement of tumor targeting and accumulation ability.

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HA-BP NPs could promote M2 to M1 macrophage polarization and further enhance invasion of activated CD4⁺ and CD8⁺ T cells.

[Intrauterine balloon tamponade combined with temporary abdominal aortic balloon occlusion in the management of women with placenta accreta spectrum:a randomized controlled trial]

Objective: To access the effectiveness and safety of the intrauterine balloon tamponade verse gauze packing combined with temporary abdominal aortic balloon occlusion in the management of placenta accreta spectrum (PAS). Methods: This was an open-label, randomized controlled trial conducted in Nanjing Drum Tower Hospital. The patients suspected with PAS for uterine preservation surgery under the multidisciplinary team care were recruited between Aug 2015 and Jan 2018. When bleeding could not be achieved after fetus delivered, and a temporary abdominal aortic balloon occlusion and the compression sutures as needed, the women were randomly allocated 1∶1 into balloon tamponade (n=81) or gauze packing (n=80) group. The primary outcome was successful bleeding arrests by avoiding second line surgeries. The secondary outcomes included the volume of blood loss during and after cesarean section, the rate of PPH, incidence and amount of blood transfusion, hysterectomy, postpartum pain, ICU admission, need for re-laparotomy, and the length of hospital stay, readmission, and interventional radiology complications. Results: All the women [100% (81/81)] in the balloon group were obtained hemostasis without further intervention, significantly higher than 88% (70/80) in the gauze group (P=0.001). Before uterine tamponade, blood loss were 820 ml (620-1 230) ml and 850 ml (605-1 442) ml, while placenta bed were sutured in 96%（78/81, 77/80） respectively (P>0.05).The proportion of blood loss≥1 000 ml was higher in the gauze group than that in the balloon group (P=0.006). Maternal adverse events involving total blood loss, puerperal morbidity and postpartum pain occurred more frequently in the gauze group (P<0.05). The following outcome showed no statistically significant difference between the two groups: the vascular occlusion time, the dose of radiation, and interventional radiology complication (P>0.05). The median volume infused into the lower and upper balloons is 70 ml (50-100 ml) and 180 ml (100-240 ml). Conclusions: Incrauterine balloon tamponade is as effective as gauze packing in hemostasis following the placenta delivery in PAS. Compared with gauze packing, the uterine balloon tamponade is more effective.

Pathology without microscope: From a projection screen to a virtual slide

We have witnessed successive stages since the Seventies in the advancements towards digital pathology. We agree with Dr Pallua et al on the tremendous changes that are taking place in pathology, all leading toward greater role of digitalization in the field of pathology, both in terms of consultation and teaching. In particular, distance teaching using digital pathology will grow into a mainstream mode of pathology teaching, something that has been reinforced by COVID-19.

Thermosensitive Exosome-Liposome Hybrid Nanoparticle-Mediated Chemoimmunotherapy for Improved Treatment of Metastatic Peritoneal Cancer

Metastatic peritoneal carcinoma (mPC) is a deadly disease without effective treatment. To improve treatment of this disease, a recently developed hyperthermic intraperitoneal chemotherapy (HIPEC) has emerged as the standard of care. However, the efficacy of this approach is limited by inefficient drug penetration and rapidly developed drug resistance. Herein, a nanotechnology approach is reported that is designed to improve drug delivery to mPC and to augment the efficacy of HIPEC through delivery of chemoimmunotherapy. First, the drug delivery efficiency of HIPEC is determined and it is found that chemotherapy agents cannot be efficiently delivered to large tumors nodules. To overcome the delivery hurdle, genetically engineered exosomes-thermosensitive liposomes hybrid NPs, or gETL NPs, are then synthesized, and it is demonstrated that the NPs after intravenous administration efficiently penetrates into mPC tumors and releases payloads at the hypothermia condition of HIPEC. Last, it is shown that, when granulocyte-macrophage colony-stimulating factor (GM-CSF) and docetaxel are co-delivered, gETL NPs effectively inhibit tumor development and the efficacy is enhanced when HIPEC is co-administered. The study provides a strategy to improve drug delivery to mPCs and offers a promising approach to improve treatment of the disease through combination of locoregional delivery of HIPEC and systemic delivery of chemoimmunotherapy via gETL NPs.

[Safety and efficacy of bivalirudin versus unfractionated heparin during perioperative period of percutaneous coronary intervention]

Objective: To compare the safety and efficacy of bivalirudin versus unfractionated heparin during perioperative period of percutaneous coronary intervention(PCI) in real-world. Methods: A total of 13 097 serial patients who underwent PCI from January 2016 to November 2018 in the Northern Theater Command were enrolled in the present study. Patients were stratified as the bivalirudin group or the heparin group according to antithrombotic therapy during PCI. The primary efficiency endpoint was 30-day net adverse clinical event(NACE), defined as all-cause death, re-infarction, urgent target lesion revascularization (uTLR), stroke or any bleeding. The second efficiency endpoint was 30-day major cardiac and cerebral events (MACCE), defined as all-cause death, re-infarction, uTLR and stroke. Additional end points included the rates of stent thrombosis at 30 days. Propensity scores included clinical and demographic variables, with 1∶2 matching. Compared the incidence of events above between the two groups before and after matching. Results: Among the 13 097 included patients(age was (61±10) years old), 3 421 (26.1%) were female. And 2 734 patients were divided into the bivalirudin group, and 10 363 patients to the heparin group(5 468 after matching). Before propensity score matching, patients in bivalirudin group were older and received higher levels of CRUSADE score than heparin group. These patients were more likely to have hypertension and more with ST-segment elevation acute coronary syndromes（all P＜0.05）. After propensity score matching, the incidence of 30-day NACE(3.8%(103/2 734) vs.5.0%(271/5 468), P=0.015) and any bleeding (2.0%(54/2 734) vs. 2.8%(151/5 468), P=0.032) in the bivalirudin group were lower than that in the heparin group, but the incidence of MACCE (1.9%(51/2 734) vs. 2.3%(127/5 468), P=0.180) and stent thrombosis (0.1%(2/2 734) vs. 0.1%(3/5 468), P=1.000) were comparable between the two groups. Conclusion: The risk of bleeding and the incidence of NACE are significantly lower for patients using bivalirudin during perioperative period of PCI compared to heparin, without significant differences in ischemic events.

Having caregiving responsibilities affects management of fragility fractures and bone health

In this secondary analysis of six qualitative studies, we found that approximately one-quarter of individuals with fragility fracture were serving as informal caregivers. The caregiving role appeared to be a cause of the fracture for some and was prioritized over bone health, acting as a barrier to bone health management.

INTRODUCTION

Among fragility fracture patients serving as informal caregivers, our objective was to examine how caregiving responsibilities were associated with, and possibly impacted by, the fracture experience and the resulting management of bone health.

METHODS

We conducted a secondary analysis (amplified analysis) of six qualitative studies to understand caregiver responsibilities and the relationship between these responsibilities and patients' management of the fracture and bone health. The primary studies and the secondary analysis were conducted from a phenomenological approach. Eligible individuals in the primary studies were English-speaking men and women who were 45+ years old recruited from three settings (local, provincial, and national).

RESULTS

Without being prompted to talk about their experience of caregiving, 33 of 145 (23%) individuals reported they were providing care to a family member or friend at the time of their fracture or during recovery post-fracture. The experience of having caregiving responsibilities was related to the fracture and bone health in two ways: (1) the caregiving role appeared to be a cause of the fracture in some participants and (2) caregiving was prioritized over participants' own bone health and was a barrier to bone health management.

CONCLUSION

Fragility fracture is associated with, and potentially leads to an impairment of, an important social role in patients providing physical and emotional support and supervision for dependents as caregivers. Further, an important cause of fragility fracture can occur in the act of caregiving.

Prediction of Double-Lumen Tube Size By Ultrasonography for Asian Women: A Prospective Observational Study

OBJECTIVE

To assess the agreement of the diameter of the cricoid cartilage by computed tomography and ultrasonography and to compare the accuracy of the left double-lumen tubes (DLTs) and right DLTs predicted by ultrasonography for Asian women.

DESIGN

Prospective observational study.

SETTING

Academic, tertiary care hospital.

PARTICIPANTS

Fifty female patients intubated with a left DLT and 50 female patients intubated with a right DLT.

INTERVENTIONS

No intervention.

MEASUREMENTS AND MAIN RESULTS

A radiologist measured the transverse cricoid diameter by computed tomography (CT), and an independent echographer measured the transverse cricoid diameter using ultrasonography. The size of the DLT was selected based on the cricoid diameter by ultrasonography. The agreement of the transverse cricoid diameter was assessed by computed tomography and ultrasonography. The accuracy of the DLT, the tracheal segment, and the bronchial segment were compared between the left intubation group and right intubation group. There was a good agreement between the transverse cricoid diameter measured by ultrasonography and CT (r = 0.946, p < 0.001). The overall accuracy of the DLTs was similar between the groups (86.0% v 92.0%, p = 0.318). There were no significant differences in the accuracy of the tracheal segment (96.0% v 94.0%; p = 1.000) and the bronchial segment (90.0% v 98.0%, p = 0.056).

CONCLUSIONS

The transverse diameter of the cricoid cartilage in most Asian women can be accurately measured by ultrasonography. The size of the DLT for Asian women can be predicted by ultrasonography measurement of the cricoid diameter.

LncRNA RUSC1-AS1 promotes the proliferation of hepatocellular carcinoma cells through modulating NOTCH signaling

The long non-coding RNA (lncRNA) RUSC1-AS1 has been reported to be dysregulated in the progression of many cancers. Also, RUSC1-AS1 had been detected to be highly expressed in laryngeal squamous cell carcinoma and breast cancer cells, suggesting that RUSC1-AS1 may be a biomarker for cancers. However, the biological role and regulatory mechanism of RUSC1-AS1 in hepatocellular carcinoma (HCC) remain unknown. In this study, we found that RUSC1-AS1 was upregulated in HCC tissues and cells, and predicted unfavorable prognosis of HCC patients. The function assays including colony formation, EdU, TUNEL assay revealed that RUSC1-AS1 facilitated HCC cell proliferation and inhibited HCC cell apoptosis. Furthermore, mechanism assays including luciferase reporter assay and RIP assay demonstrated that RUSC1-AS1 could directly bind to hsa-miR-7-5p. Besides, hsa-miR-7-5p targeted and negatively regulated NOTCH3 expression. Moreover, RUSC1-AS1 sponged hsa-miR-7-5p to upregulate NOTCH3 and to trigger the NOTCH signaling pathway. The rescue assays depicted that RUSC1-AS1 regulated HCC cell proliferation and apoptosis through modulating NOTCH signaling. In conclusion, lncRNA RUSC1-AS1 promoted the proliferation and reduced the apoptosis of HCC cells through activation of NOTCH signaling via hsa-miR-7-5p/NOTCH3 axis.

MicroRNA-95-3p promoted the development of prostatic cancer via regulating DKK3 and activating Wnt/β-catenin pathway

OBJECTIVE

Previous studies have shown that microRNA-95-3p (miR-95-3p) plays a crucial role in multiple human cancers except for prostatic cancer (PCa). Therefore, the function of miR-95-3p was investigated in PCa in the present work.

PATIENTS AND METHODS

The expression of miR-95-3p was measured by Real Time-quantitative Polymerase Chain Reaction (RT-qPCR) assay. Western blot assay was used to examine the protein expression of epithelial-mesenchymal transition (EMT) markers. In addition, the function of miR-95-3p was detected through MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) and transwell assays. Dual Luciferase assay was applied to confirm the relationship between miR-95-3p and dickkopf-3 (DKK3). The tumor growth was observed through xenograft tumor formation assay.

RESULTS

The upregulation of miR-95-3p was detected in PCa tissues and cell lines, which predicted poor prognosis of PCa patients. Moreover, miR-95-3p promoted cell proliferation, migration and invasion in PCa by targeting DKK3 and activating the Wnt/β-catenin pathway. MiR-95-3p also promoted the tumor growth of PCa in vivo. Besides that, downregulation of DKK3 was identified in PCa and low DKK3 expression predicted poor prognosis of PCa patients.

CONCLUSIONS

MiR-95-3p promoted the development of PCa via targeting DKK3 and activating the Wnt/β-catenin pathway.

Juvenile hormone regulates the shift from migrants to residents in adult oriental armyworm, Mythimna separata

In migratory insects, increasing evidence has demonstrated juvenile hormone (JH) is involved in regulating adult reproduction and flight. Our previous study demonstrated that the switch from migrants to residents in Mythimna separata could be induced by adverse environmental conditions during a sensitive period in adulthood (the first day post-emergence), but the role of JH in this switch is not clear. Here, we found a significantly different pattern of JH titers between migrants and residents, with migrants showing a slower release of JH during adulthood than residents. Application of JH analogue (JHA) in the 1-day-old adults, significantly accelerated adult reproduction and suppressed flight capacity. The pre-oviposition period and period of first oviposition of migrants treated with JHA were significantly shorter, while the total lifetime fecundity and mating percentage increased. The flight capacity and dorso-longitudinal muscle size of the migrants were decreased significantly when treated with JHA. The effect of JHA on reproduction and flight capacity indicate that JH titers during the sensitive period (first day post-emergence) regulates the shift from migrants to residents in M. separata.

Age-related Change of the Dimensions of the Cricoid Cartilage in Adults

OBJECTIVES

To measure the dimensions of the cricoid cartilage in adults and to investigate the age-related change of the dimensions of the cricoid cartilage.

METHODS

After performing the multiplanar reconstruction and correcting the slant of the cervical computed tomography scans, the transverse and anteroposterior internal diameters of the inlet (TD-in and APD-in) and outlet (TD-out and APD-out) of the cricoid cartilage were measured, respectively. The angle between the arch and lamina of the cricoid cartilage in the middle sagittal plane was measured. The ratios of transverse to anteroposterior diameter for the inlet (Ratio-in) and outlet (Ratio-out) of the cricoid cartilage were calculated, respectively.

RESULTS

A total of 1200 adults were included in this study, with 600 males and 600 females. The TD-in is the smallest cricoid diameter and the APD-in is the largest cricoid diameter. The mean cricoid diameters and the cricoid angle in males were larger than those in females. The cricoid inlet is oval shaped and the cricoid cartilage is "funnel-shaped" in the middle sagittal plane. The shape of the outlet of the cricoid cartilage varies greatly among individuals. In males, the APD-in and APD-out were negatively correlated with age while the Ratio-in and Ratio-out was positively correlated with age. In females, the APD-out were negatively correlated with age while the Ratio-out was negatively correlated with age.

CONCLUSIONS

The dimensions of the cricoid cartilage change as age advances in adult population and the sexual dimorphism of the cricoid outlet occurs after 50 years old.

pH-Responsive Antibacterial Resin Adhesives for Secondary Caries Inhibition

Secondary caries caused by dental plaque is one of the major reasons for the high failure rate of resin composite restoration. Although antimicrobial agent-modified dental restoration systems have been researched for years, few reported intelligent anticaries materials could respond to the change of the oral environment and help keep oral eubiosis. Herein, we report tertiary amine (TA)-modified resin adhesives (TA@RAs) with pH-responsive antibacterial effect to reduce the occurrence of secondary caries. Two kinds of newly designed TA monomers were synthesized: DMAEM (dodecylmethylaminoethyl methacrylate) and HMAEM (hexadecylmethylaminoethyl methacrylate). In the minimum inhibitory concentration and minimum bactericidal concentration test against Streptococcus mutans, Streptococcus sanguinis, and Streptococcus gordonii, they exhibited antibacterial effect only in acidic medium, which preliminarily verified the acid-activated effect of TAs. Then DMAEM and HMAEM were incorporated into adhesive resin at the mass fraction of 5%, yielding TA@RAs. In vivo and in vitro tests showed that the mechanical properties and biocompatibility of the adhesive were not affected. A S. mutans biofilm model in acidic and neutral medium was used and confirmed that TA@RAs could respond to the critical pH value of de-/remineralization and acquire reversible antibiofilm effect via the protonation and deprotonation of TAs. Meanwhile, the stability of antibacterial effect was confirmed via a 5-d pH-cycling experiment and a saliva-derived biofilm aging model. Furthermore, 16S rRNA gene sequencing showed that TA@RAs could increase the diversity of the saliva-derived biofilms, which implied that the novel materials could help regulate the microbial community to a healthy one. Finally, an in vitro demineralization model and in vivo secondary caries model were applied and demonstrated that TA@RAs could prevent secondary dental caries effectively. In summary, the reversible pH-responsive and non-drug release antibacterial resin adhesives ingeniously overcome the defect of the present materials and hold great promise for clinical application.