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1.
Dalton Trans ; 2024 May 09.
Article in English | MEDLINE | ID: mdl-38721861

ABSTRACT

Two new salts of a mononuclear tripodal Fe(II) complex were prepared, using ClO4- and Cl-. The ClO4- sample (1) remained HS at low temperatures, similar to the previously reported BF4- analogue. Crystallising with the Cl- anion (2) led to a markedly different crystal packing arrangement, and engendered SCO activity. This has been correlated to the lower crystal packing density in 2 and the coordination complex conformational differences arising due to the packing motifs of 1 and 2. Further, solvent ordering effects have been proposed to facilitate spin transition behaviour in 2.

2.
Ann Geriatr Med Res ; 2024 May 10.
Article in English | MEDLINE | ID: mdl-38724449

ABSTRACT

Objectives: This study aimed to survey knowledge and perceptions of social prescribing (SP) amongst health and community care workers. Study design: Cross sectional online survey conducted in November 2023. Methods: The survey on basic demographics, awareness, knowledge, and practices of SP was completed by 123 health and community care workers. Results: The mean age of respondents was 39.0 years. Nearly two-thirds had heard of SP. A lower proportion of acute hospital doctors (55.6%) and nurses (56.8%) had heard of SP compared with primary and subacute care doctors (75.0%). The majority agreed that SP is beneficial for patients' mental health and reducing healthcare utilisation. Primary care physicians, community nurses and active ageing centres were the top three professionals selected as most responsible for SP by survey respondents. The most commonly cited barriers to SP were seniors' reluctance (63.4%), lacking knowledge on how to refer (59.3%), lack of time (44.7%) and cost to seniors (44.7%). Conclusion: Overall, health and community care workers demonstrated positive attitudes toward SP and were keen to refer patients for SP. However, additional efforts are needed to improve knowledge about how to refer for and provide training on SP.

3.
Biomed Environ Sci ; 37(4): 387-398, 2024 Apr 20.
Article in English | MEDLINE | ID: mdl-38727161

ABSTRACT

Objective: Recombinase-aided polymerase chain reaction (RAP) is a sensitive, single-tube, two-stage nucleic acid amplification method. This study aimed to develop an assay that can be used for the early diagnosis of three types of bacteremia caused by Staphylococcus aureus (SA), Pseudomonas aeruginosa (PA), and Acinetobacter baumannii (AB) in the bloodstream based on recombinant human mannan-binding lectin protein (M1 protein)-conjugated magnetic bead (M1 bead) enrichment of pathogens combined with RAP. Methods: Recombinant plasmids were used to evaluate the assay sensitivity. Common blood influenza bacteria were used for the specific detection. Simulated and clinical plasma samples were enriched with M1 beads and then subjected to multiple recombinase-aided PCR (M-RAP) and quantitative PCR (qPCR) assays. Kappa analysis was used to evaluate the consistency between the two assays. Results: The M-RAP method had sensitivity rates of 1, 10, and 1 copies/µL for the detection of SA, PA, and AB plasmids, respectively, without cross-reaction to other bacterial species. The M-RAP assay obtained results for < 10 CFU/mL pathogens in the blood within 4 h, with higher sensitivity than qPCR. M-RAP and qPCR for SA, PA, and AB yielded Kappa values of 0.839, 0.815, and 0.856, respectively ( P < 0.05). Conclusion: An M-RAP assay for SA, PA, and AB in blood samples utilizing M1 bead enrichment has been developed and can be potentially used for the early detection of bacteremia.


Subject(s)
Bacteremia , Mannose-Binding Lectin , Humans , Mannose-Binding Lectin/blood , Bacteremia/diagnosis , Bacteremia/microbiology , Bacteremia/blood , Recombinases/metabolism , Acinetobacter baumannii/genetics , Acinetobacter baumannii/isolation & purification , Staphylococcus aureus/isolation & purification , Staphylococcus aureus/genetics , Pseudomonas aeruginosa/isolation & purification , Pseudomonas aeruginosa/genetics , Polymerase Chain Reaction/methods , Sensitivity and Specificity , Bacteria/genetics , Bacteria/isolation & purification
4.
J Med Educ Curric Dev ; 11: 23821205241252277, 2024.
Article in English | MEDLINE | ID: mdl-38711831

ABSTRACT

OBJECTIVE: The aim of this study is to explore the application effectiveness and value of combining problem-based learning (PBL) and case-based learning (CBL) in clinical electroencephalography (EEG) education. METHODS: A total of 104 standardized training for residents and refresher physicians from the Neurology Department of the First Affiliated Hospital of Chongqing Medical University, Neurology Department of Chongqing Yubei Hospital, and Neurology Department of Banan Hospital of Chongqing Medical University were enrolled. According to randomization principles, 52 participants were assigned into the PBL-CBL combination group and 52 subjects were assigned into the control group. We used statistical methods to compare the differences between the 2 groups in basic theory, case analysis, practical assessment scores, and teaching satisfaction. RESULTS: In terms of basic theory, case analysis, practical assessment scores, and teaching satisfaction, there were significant differences between the 2 groups, and the PBL-CBL combination group was superior to the control group (P < .05). CONCLUSION: In clinical EEG education, the teaching model of combining PBL and CBL has certain application effects and value.

5.
Biodes Res ; 6: 0032, 2024.
Article in English | MEDLINE | ID: mdl-38716149

ABSTRACT

Messenger RNA (mRNA) therapeutics hold great potential in the prevention and treatment of many diseases owing to several unique advantages. Delivery of mRNA into target cells is a critical step in mRNA therapy. Efficient and safe delivery systems remain an urgent need. Here, we provide an overview of the current applications of protein nanocages (PNCs), which include different types of PNCs, such as viral capsids, nonviral PNCs, and artificial PNCs, in mRNA delivery. PNCs have the features of uniform size, controllable assembly, modifiable inner and outer surfaces, good biocompatibility, and biodegradability, making them ideal candidates for mRNA delivery. In this review, the properties, loading strategies, and delivery outcomes of each tested PNC are introduced. The challenges faced by PNC-based mRNA carriers are discussed. We also share our perspectives on possible strategies to address these challenges, emphasizing the opportunities brought by emerging technologies and disciplinary convergence.

6.
Chemistry ; : e202401501, 2024 May 28.
Article in English | MEDLINE | ID: mdl-38806409

ABSTRACT

Visible-light-mediated [2+2] photocycloaddition reaction can be considered an ideal solution due to its green and sustainable properties, and is one of the most efficient methods to synthesize four-membered ring motifs. Although research on the [2+2] photocycloaddition of alkynes is challenging because of the diminished reactivity of alkynes, and the more significant ring strain of the products, remarkable achievements have been made in this field. In this article, we highlight the recent advances in visible-light-mediated [2+2] photocycloaddition reactions of alkynes, with focus on the reaction mechanism and the late-stage synthetic applications. Advances in obtaining cyclobutenes, azetines, and oxetene active intermediates continue to be breakthroughs in this fascinating field of research.

7.
Nucl Med Biol ; 136-137: 108929, 2024 May 23.
Article in English | MEDLINE | ID: mdl-38796925

ABSTRACT

Heat shock protein 90 (HSP90) plays a crucial role in cancer cell growth and metastasis by stabilizing overexpressed signaling proteins. Inhibiting HSP90 has emerged as a promising anti-cancer strategy. In this study, we aimed to develop and characterize a HSP90-targeted molecular imaging probe, [64Cu]Cu-DOTA-BDA-GM, based on a specific HSP90 inhibitor, geldanamycin (GM), for PET imaging of cancers. GM is modified at the C-17 position with 1,4-butane-diamine (BDA) and linked to 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) for 64Cu radiolabeling. We evaluated the probe's specific binding to HSP90-expressing cells using Chinese hamster ovary (CHO) cells and breast cancer cells including MDA-MB-231, MDA-MB-435S, MCF7, and KR-BR-3 cell lines. A competition study with non-radioactive GM-BDA yielded an IC50 value of 1.35 ± 0.14 nM, underscoring the probe's affinity for HSP90. In xenograft models of MDA-MB-231 breast cancer, [64Cu]Cu-DOTA-BDA-GM showcased targeted tumor localization, with significant radioactivity observed up to 18 h post-injection. Blocking studies using unlabeled GM-BDA and treatment with the anticancer drug Vorinostat (SAHA), which can affect the expression and activity of numerous proteins, such as HSPs, confirmed the specificity and sensitivity of the probe in cancer targeting. Additionally, PET/CT imaging in a lung metastasis mouse model revealed increased lung uptake of [64Cu]Cu-DOTA-BDA-GM in metastatic sites, significantly higher than in non-metastatic lungs, illustrating the probe's ability to detect metastatic breast cancer. In conclusion, [64Cu]Cu-DOTA-BDA-GM represents a sensitive and specific approach for identifying HSP90 expression in breast cancer and metastases, offering promising implications for clinical diagnosis and monitoring.

8.
Nucleic Acids Res ; 2024 May 27.
Article in English | MEDLINE | ID: mdl-38797520

ABSTRACT

Whole-genome bisulfite sequencing (BS-Seq) measures cytosine methylation changes at single-base resolution and can be used to profile cell-free DNA (cfDNA). In plasma, ultrashort single-stranded cfDNA (uscfDNA, ∼50 nt) has been identified together with 167 bp double-stranded mononucleosomal cell-free DNA (mncfDNA). However, the methylation profile of uscfDNA has not been described. Conventional BS-Seq workflows may not be helpful because bisulfite conversion degrades larger DNA into smaller fragments, leading to erroneous categorization as uscfDNA. We describe the '5mCAdpBS-Seq' workflow in which pre-methylated 5mC (5-methylcytosine) single-stranded adapters are ligated to heat-denatured cfDNA before bisulfite conversion. This method retains only DNA fragments that are unaltered by bisulfite treatment, resulting in less biased uscfDNA methylation analysis. Using 5mCAdpBS-Seq, uscfDNA had lower levels of DNA methylation (∼15%) compared to mncfDNA and was enriched in promoters and CpG islands. Hypomethylated uscfDNA fragments were enriched in upstream transcription start sites (TSSs), and the intensity of enrichment was correlated with expressed genes of hemopoietic cells. Using tissue-of-origin deconvolution, we inferred that uscfDNA is derived primarily from eosinophils, neutrophils, and monocytes. As proof-of-principle, we show that characteristics of the methylation profile of uscfDNA can distinguish non-small cell lung carcinoma from non-cancer samples. The 5mCAdpBS-Seq workflow is recommended for any cfDNA methylation-based investigations.

9.
Science ; 384(6698): 885-890, 2024 May 24.
Article in English | MEDLINE | ID: mdl-38781365

ABSTRACT

Men or mice with homozygous serine/threonine kinase 33 (STK33) mutations are sterile owing to defective sperm morphology and motility. To chemically evaluate STK33 for male contraception with STK33-specific inhibitors, we screened our multibillion-compound collection of DNA-encoded chemical libraries, uncovered potent STK33-specific inhibitors, determined the STK33 kinase domain structure bound with a truncated hit CDD-2211, and generated an optimized hit CDD-2807 that demonstrates nanomolar cellular potency (half-maximal inhibitory concentration = 9.2 nanomolar) and favorable metabolic stability. In mice, CDD-2807 exhibited no toxicity, efficiently crossed the blood-testis barrier, did not accumulate in brain, and induced a reversible contraceptive effect that phenocopied genetic STK33 perturbations without altering testis size. Thus, STK33 is a chemically validated, nonhormonal contraceptive target, and CDD-2807 is an effective tool compound.


Subject(s)
Contraceptive Agents, Male , Protein Serine-Threonine Kinases , Male , Animals , Mice , Contraceptive Agents, Male/pharmacology , Protein Serine-Threonine Kinases/antagonists & inhibitors , Protein Serine-Threonine Kinases/metabolism , Protein Serine-Threonine Kinases/chemistry , Protein Serine-Threonine Kinases/genetics , Humans , Protein Kinase Inhibitors/pharmacology , Protein Kinase Inhibitors/chemistry , Testis/drug effects , Blood-Testis Barrier/drug effects , Small Molecule Libraries/chemistry , Small Molecule Libraries/pharmacology
10.
PeerJ ; 12: e17391, 2024.
Article in English | MEDLINE | ID: mdl-38784388

ABSTRACT

Objective: To evaluate the efficacy and safety of cetuximab instead of cisplatin in combination with downstaging radiotherapy for papillomavirus (HPV) positive oropharyngeal squamous cell carcinoma (HPV+ OPSCC). Design: Meta-analysis and systematic evaluation. Data sources: The PubMed, Embase, Web of Science, and Cochrane library databases were searched up to June 8, 2023, as well as Clinicaltrials.gov Clinical Trials Registry, China Knowledge Network, Wanfang Data Knowledge Service Platform, and Wiprojournal.com. Eligibility criteria for selecting studies: Randomized controlled trials reporting results of standard regimens of cetuximab + radiotherapy vs cisplatin + radiotherapy in treating HPV+ OPSCC were included. The primary outcomes of interest were overall survival (OS), progression-free survival (PFS), local regional failure rate (LRF), distant metastasis rate (DM), and adverse events (AE). Data extraction and synthesis: Two reviewers independently extracted data and assessed the risk of bias of the included studies. The HR and its 95% CI were used as the effect analysis statistic for survival analysis, while the OR and its 95% CI were used as the effect analysis statistic for dichotomous variables. These statistics were extracted by the reviewers and aggregated using a fixed-effects model to synthesise the data. Results: A total of 874 relevant papers were obtained from the initial search, and five papers that met the inclusion criteria were included; a total of 1,617 patients with HPV+ OPSCC were enrolled in these studies. Meta-analysis showed that OS and PFS were significantly shorter in the cetuximab + radiotherapy group of patients with HPV+ OPSCC compared with those in the conventional cisplatin + radiotherapy group (HR = 2.10, 95% CI [1.39-3.15], P = 0.0004; HR = 1.79, 95% CI [1.40-2.29], P < 0.0001); LRF and DM were significantly increased (HR = 2.22, 95% CI [1.58-3.11], P < 0.0001; HR = 1.66, 95% CI [1.07-2.58], P = 0.02), but there was no significant difference in overall grade 3 to 4, acute and late AE overall (OR = 0.86, 95% CI [0.65-1.13], P = 0.28). Conclusions: Cisplatin + radiotherapy remains the standard treatment for HPV+ OPSCC. According to the 7th edition AJCC/UICC criteria, low-risk HPV+ OPSCC patients with a smoking history of ≤ 10 packs/year and non-pharyngeal tumors not involved in lymphatic metastasis had similar survival outcomes with cetuximab/cisplatin + radiotherapy. However, further clinical trials are necessary to determine whether cetuximab + radiotherapy can replace cisplatin + radiotherapy for degraded treatment in individuals who meet the aforementioned characteristics, particularly those with platinum drug allergies. Prospero registration number: CRD42023445619.


Subject(s)
Cetuximab , Chemoradiotherapy , Cisplatin , Oropharyngeal Neoplasms , Papillomavirus Infections , Humans , Cetuximab/therapeutic use , Cetuximab/adverse effects , Cetuximab/administration & dosage , Oropharyngeal Neoplasms/virology , Oropharyngeal Neoplasms/pathology , Oropharyngeal Neoplasms/mortality , Oropharyngeal Neoplasms/radiotherapy , Oropharyngeal Neoplasms/therapy , Oropharyngeal Neoplasms/drug therapy , Cisplatin/therapeutic use , Cisplatin/administration & dosage , Papillomavirus Infections/virology , Papillomavirus Infections/mortality , Prognosis , Squamous Cell Carcinoma of Head and Neck/virology , Squamous Cell Carcinoma of Head and Neck/radiotherapy , Squamous Cell Carcinoma of Head and Neck/drug therapy , Squamous Cell Carcinoma of Head and Neck/pathology , Squamous Cell Carcinoma of Head and Neck/mortality , Squamous Cell Carcinoma of Head and Neck/therapy , Neoplasm Staging , Papillomaviridae , Antineoplastic Agents, Immunological/therapeutic use , Antineoplastic Agents, Immunological/adverse effects , Progression-Free Survival , Human Papillomavirus Viruses
12.
BMC Pulm Med ; 24(1): 249, 2024 May 20.
Article in English | MEDLINE | ID: mdl-38769572

ABSTRACT

BACKGROUND: Assessing mechanical properties of the respiratory system (Cst) during mechanical ventilation necessitates an end-inspiration flow of zero, which requires an end-inspiratory occlusion maneuver. This lung model study aimed to observe the effect of airflow obstruction on the accuracy of respiratory mechanical properties during pressure-controlled ventilation (PCV) by analyzing dynamic signals. METHODS: A Hamilton C3 ventilator was attached to a lung simulator that mimics lung mechanics in healthy, acute respiratory distress syndrome (ARDS) and chronic obstructive pulmonary disease (COPD) models. PCV and volume-controlled ventilation (VCV) were applied with tidal volume (VT) values of 5.0, 7.0, and 10.0 ml/kg. Performance characteristics and respiratory mechanics were assessed and were calibrated by virtual extrapolation using expiratory time constant (RCexp). RESULTS: During PCV ventilation, drive pressure (DP) was significantly increased in the ARDS model. Peak inspiratory flow (PIF) and peak expiratory flow (PEF) gradually declined with increasing severity of airflow obstruction, while DP, end-inspiration flow (EIF), and inspiratory cycling ratio (EIF/PIF%) increased. Similar estimated values of Crs and airway resistance (Raw) during PCV and VCV ventilation were obtained in healthy adult and mild obstructive models, and the calculated errors did not exceed 5%. An underestimation of Crs and an overestimation of Raw were observed in the severe obstruction model. CONCLUSION: Using the modified dynamic signal analysis approach, respiratory system properties (Crs and Raw) could be accurately estimated in patients with non-severe airflow obstruction in the PCV mode.


Subject(s)
Airway Resistance , Pulmonary Disease, Chronic Obstructive , Respiration, Artificial , Respiratory Distress Syndrome , Humans , Airway Resistance/physiology , Pulmonary Disease, Chronic Obstructive/physiopathology , Pulmonary Disease, Chronic Obstructive/therapy , Respiration, Artificial/methods , Respiratory Distress Syndrome/therapy , Respiratory Distress Syndrome/physiopathology , Tidal Volume , Respiratory Mechanics/physiology , Lung/physiopathology , Lung/physiology , Lung Compliance/physiology , Models, Biological , Adult
13.
Zhongguo Gu Shang ; 37(5): 464-9, 2024 May 25.
Article in Chinese | MEDLINE | ID: mdl-38778529

ABSTRACT

OBJECTIVE: To investigate the application effect and imaging changes of metal cushion block combined with Jumbo cup in the reconstruction of acetabular bone defect after revision of artificial hip joint. METHODS: Retrospective analysis was made on the clinical data of 83 patients who underwent revision acetabular bone defect reconstruction of the artificial hip joint in our hospital from September 2019 to October 2021. They were divided into group A and group B according to different surgical methods. There were 42 patients in group A, including 26 males and 16 females, aged from 44 to 72 years old with an average of (60.57±4.62) years, who underwent revision with metal cushion block and Jumbo cup. There were 41 patients in group B, including 22 males and 19 females, aged from 42 to 71 years old with an average of (58.74±4.25) years, who underwent revision with metal cushion block and bone cement mortar cup. The operation related indexes, Harris hip function score and visual analogue scale (VAS) of pain before operation, 1 month and 12 month after operation were compared between two groups. The results of X-ray imaging examination (hip rotation center height, acetabular abduction angle, femoral eccentricity and imaging standard qualification rate) before and 12 month after operation were evaluated, and the incidence of complications was compared between two groups. RESULTS: There was no significant difference in operation time, intraoperative bleeding volume and postoperative drainage volume between two groups (P>0.05). Both groups were followed up for 12 to 36 months with an average of (25.36±3.59) months. The scores of pain, function, deformity and Harris' total score in the two groups at 1 month after operation were higher than those before operation (P<0.05), and the scores of pain, function, deformity, joint activity and Harris' total score in two groups at 1 year after operation were higher than those before operation and 1 month after operation (P<0.05), and the above scores in group A were higher than those in group B at 1 year after operation (P<0.05). The VAS of two groups decreased successively at 1 month and 1 year after operation (P<0.05), but there was no significant difference in both groups at each time point (P>0.05). The femoral eccentricity increased in both groups at 1 year after operation (P<0.05), and group A was higher than group B (P<0.05). The height of rotation center and acetabular abduction angle decreased in both groups at 1 year after operation (P<0.05), and the height of rotation center in group A was lower than that in group B (P<0.05), but there was no significant difference in acetabular abduction angle between two groups (P>0.05). The imaging qualification rate of group A was higher than that of group B (P<0.05). There was no significant difference in the incidence of adverse reactions between two groups (P>0.05). CONCLUSION: Metal cushion block combined with Jumbo cup in the treatment of acetabular bone defects can provide the hip joint function, and restore the hip joint rotation center, femoral eccentricity and acetabular abduction angle, with obvious clinical effect.


Subject(s)
Acetabulum , Arthroplasty, Replacement, Hip , Humans , Male , Female , Middle Aged , Aged , Acetabulum/surgery , Adult , Retrospective Studies , Arthroplasty, Replacement, Hip/methods , Hip Prosthesis , Reoperation , Plastic Surgery Procedures/methods , Metals
14.
Zhongguo Gu Shang ; 37(5): 519-26, 2024 May 25.
Article in Chinese | MEDLINE | ID: mdl-38778538

ABSTRACT

OBJECTIVE: To explore the molecular mechanism of chronic osteomyelitis and to clarify the role of MAPK signal pathway in the pathogenesis of chronic osteomyelitis, by collecting and analyzing the transcriptional information of bone tissue in patients with chronic osteomyelitis. METHODS: Four cases of traumatic osteomyelitis in limbs from June 2019 to June 2020 were selected, and the samples of necrotic osteonecrosis from chronic osteomyelitis (necrotic group), and normal bone tissue (control group) were collected. Transcriptome information was collected by Illumina Hiseq Xten high throughput sequencing platform, and the gene expression in bone tissue was calculated by FPKM. The differentially expressed genes were screened by comparing the transcripts of the Necrotic group and control group. Genes were enriched by GO and KEGG. MAP3K7 and NFATC1 were selected as differential targets in the verification experiments, by using rat osteomyelitis animal model and immunohistochemical analysis. RESULTS: A total of 5548 differentially expressed genes were obtained by high throughput sequencing by comparing the necrotic group and control group, including 2701 up-regulated and 2847 down-regulated genes. The genes enriched in MAPK pathway and osteoclast differentiation pathway were screened, the common genes expressed in both MAPK and osteoclast differentiation pathway were (inhibitor of nuclear factor κ subunit Beta, IκBKß), (mitogen-activated protein kinase 7, MAP3K7), (nuclear factor of activated t cells 1, NFATC1) and (nuclear factor Kappa B subunit 2, NFκB2). In rat osteomyelitis model, MAP3K7 and NFATC1 were highly expressed in bone marrow and injured bone tissue. CONCLUSION: Based on the transcriptome analysis, the MAPK signaling and osteoclast differentiation pathways were closely related to chronic osteomyelitis, and the key genes IκBKß, MAP3K7, NFATC1, NFκB2 might be new targets for clinical diagnosis and therapy of chronic osteomyelitis.


Subject(s)
Osteomyelitis , Transcriptome , Osteomyelitis/genetics , Animals , Humans , Chronic Disease , Male , Rats , NFATC Transcription Factors/genetics , NFATC Transcription Factors/metabolism , Gene Expression Profiling , Bone and Bones/metabolism , Rats, Sprague-Dawley , Female , MAP Kinase Signaling System/genetics
16.
Cell Biol Toxicol ; 40(1): 36, 2024 May 21.
Article in English | MEDLINE | ID: mdl-38771396

ABSTRACT

Purinergic receptor P2Y11, a G protein-coupled receptor that is stimulated by extracellular ATP, has been demonstrated to be related to the chemotaxis of granulocytes, apoptosis of neutrophils, and secretion of cytokines in vitro. P2Y11 mutations were associated with narcolepsy. However, little is known about the roles of P2RY11 in the occurrence of narcolepsy and inflammatory response in vivo. In this study, we generated a zebrafish P2Y11 mutant using CRISPR/Cas9 genome editing and demonstrated that the P2Y11 mutant replicated the narcolepsy-like features including reduced HCRT expression and excessive daytime sleepiness, suggesting that P2Y11 is essential for HCRT expression. Furthermore, we accessed the cytokine expression in the mutant and revealed that the P2RY11 mutation disrupted the systemic inflammatory balance by reducing il4, il10 and tgfb, and increasing il6, tnfa, and il1b. In addition, the P2RY11-deficient larvae with caudal fin injuries exhibited significantly slower migration and less recruitment of neutrophils and macrophages at damaged site, and lower expression of anti-inflammatory cytokines during tissue damage. All these findings highlight the vital roles of P2RY11 in maintaining HCRT production and secreting anti-inflammatory cytokines in the native environment, and suggested that P2RY11-deficient zebrafish can serve as a reliable and unique model to further explore narcolepsy and inflammatory-related diseases with impaired neutrophil and macrophage responses.


Subject(s)
Cytokines , Inflammation , Macrophages , Neutrophils , Zebrafish Proteins , Zebrafish , Animals , Neutrophils/metabolism , Neutrophils/immunology , Macrophages/metabolism , Inflammation/metabolism , Inflammation/pathology , Inflammation/genetics , Zebrafish Proteins/genetics , Zebrafish Proteins/metabolism , Cytokines/metabolism , Mutation/genetics , Receptors, Purinergic P2/genetics , Receptors, Purinergic P2/metabolism , Receptors, Purinergic P2/deficiency
17.
Opt Lett ; 49(9): 2341-2344, 2024 May 01.
Article in English | MEDLINE | ID: mdl-38691714

ABSTRACT

In the fields of biomedicine and microfluidics, the non-contact capture, manipulation, and spin of micro-particles hold great importance. In this study, we propose a programmable non-contact manipulation technique that utilizes photoacoustic effect to spin and transport living shrimp eggs. By directing a modulated pulsed laser toward a liquid-covered stainless-steel membrane, we can excite patterned Lamb waves within the membrane. These Lamb waves occur at the interface between the membrane and the liquid, enabling the manipulation of nearby particles. Experimental results demonstrate the successful capture, spin, and transport of shrimp eggs in diameter of 220 µm over a distance of about 5 mm. Calculations indicate that the acoustic radiation force and torque generated by our photoacoustic manipulation system are more than 299.5 nN and 41.0 nN·mm, respectively. The system surpasses traditional optical tweezers in terms of force and traditional acoustic tweezers in terms of flexibility. Consequently, this non-contact manipulation system significantly expands the possibilities for applications in various fields, including embryo screening, cell manipulation, and microfluidics.


Subject(s)
Ovum , Photoacoustic Techniques , Animals , Photoacoustic Techniques/methods , Pressure , Optical Tweezers , Penaeidae
19.
J Comput Biol ; 2024 May 20.
Article in English | MEDLINE | ID: mdl-38758925

ABSTRACT

Single-cell RNA sequencing (scRNA-seq) technology provides a means for studying biology from a cellular perspective. The fundamental goal of scRNA-seq data analysis is to discriminate single-cell types using unsupervised clustering. Few single-cell clustering algorithms have taken into account both deep and surface information, despite the recent slew of suggestions. Consequently, this article constructs a fusion learning framework based on deep learning, namely scGASI. For learning a clustering similarity matrix, scGASI integrates data affinity recovery and deep feature embedding in a unified scheme based on various top feature sets. Next, scGASI learns the low-dimensional latent representation underlying the data using a graph autoencoder to mine the hidden information residing in the data. To efficiently merge the surface information from raw area and the deeper potential information from underlying area, we then construct a fusion learning model based on self-expression. scGASI uses this fusion learning model to learn the similarity matrix of an individual feature set as well as the clustering similarity matrix of all feature sets. Lastly, gene marker identification, visualization, and clustering are accomplished using the clustering similarity matrix. Extensive verification on actual data sets demonstrates that scGASI outperforms many widely used clustering techniques in terms of clustering accuracy.

20.
Ann Diagn Pathol ; 72: 152321, 2024 May 06.
Article in English | MEDLINE | ID: mdl-38759563

ABSTRACT

Retroperitoneal Ewing sarcomas (RES) are very rare and mostly described in case reports. The purpose of this study was to retrospectively analyze the clinicopathology, molecular characteristics, biological behavior, and therapeutic information of 13 cases of primary RES with immunohistochemical staining, fluorescence in situ hybridization, RT-PCR and NGS sequencing detection techniques. The thirteen patients included eight males and five females with a mean age of 34 years. Morphologically, the tumors were comprised of small round or epithelial-like cells with vacuolated cytoplasm (6/13,46 %) arranged in diffuse, nested (8/13,62 %) and perivascular (7/13,54 %) patterns. Unusual morphologic patterns, such as meningioma-like swirling structures and sieve-like structures were relatively novel findings. Immunohistochemical studies showed CD99 (12/13; 92 %), CD56 (11/13; 85 %), NKX2.2 (9/13; 69 %), PAX7 (10/11;91 %) and CD117(6/9;67 %) to be positive.12 cases (92 %) demonstrated EWSR1 rearrangement and 3 cases displayed EWSR1::FLI1 fusion by FISH. ERCC4 splice-site variant, a novel pathogenic variant, was discovered for the first time via RNA sequencing. With a median follow-up duration of 14 months (6 to 79 months), 8/13 (62 %) patients died, while 5/13(38 %) survived. Three cases recurred, and five patients developed metastasis to the liver (2 cases), lung (2 cases) and bone (1 case). RES is an aggressive, high-grade tumor, prone to multiple recurrences and metastases, with distinctive morphologic, immunohistochemical, and molecular genetic features. ERCC4 splicing mutation, which is a novel pathogenic variant discovered for the first time, with possible significance for understanding the disease, as well as the development of targeted drugs.

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