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1.
Orthop Surg ; 2024 Apr 25.
Article in English | MEDLINE | ID: mdl-38664914

ABSTRACT

OBJECTIVE: S2 alar-iliac (S2AI) screw had been widely used in the pelvic fusion for degenerative lumbar scoliosis (DLS) patients. However, whether S2AI screw trajectory was influenced by sagittal profile in DLS patients had not been comprehensively investigated. The objective of this study was to evaluate the associations between the optimal S2 alar-iliac (S2AI) screw trajectory and sagittal spinopelvic parameters in DLS patients. METHODS: Computed tomography (CT) scans of pelvis were performed in 47 DLS patients for three-dimensional reconstruction of S2AI screw trajectory from September 2019 to November 2021. Five S2AI screw trajectory parameters were measured in CT reconstruction images, including: 1) angle in the transverse plane (Tsv angle); 2) angle in the sagittal plane (Sag angle); 3) maximal screw length; 4) screw width; and 5) skin distance. The lumbar Cobb angle, lumbar apical vertebral translation (AVT); global kyphosis (GK); thoracic kyphosis (TK); lumbar lordosis (LL); sagittal vertical axis (SVA); sacral slope (SS); pelvic tilt (PT); and pelvic incidence (PI) were measured in standing X-ray films of the whole spine and pelvis. RESULTS: Both Tsv angle and Sag angle had significant positive associations with SS (p < 0.05) but negative associations with both PT (p < 0.05) and LL (p < 0.05) in all cases. Patients with SS less than 15° had both smaller Tsv angle and Sag angle than those with SS equal to or more than 15° (p < 0.05). The decreased LL would lead to the backward rotation of the pelvis, resulting in a more cephalic and less divergent trajectory of S2AI screw in DLS patients. CONCLUSIONS: For DLS patients with lumbar kyphosis, spine surgeons should avoid both excessive Tsv and Sag angles for S2AI screw insertion, especially when using free-hand technique.

2.
Int J Surg ; 110(4): 2151-2161, 2024 Apr 01.
Article in English | MEDLINE | ID: mdl-38619177

ABSTRACT

BACKGROUND: The liver is the most common site of metastasis from gastrointestinal stromal tumors (GISTs). The authors aimed to evaluate imatinib (IM) combined with hepatic resection (HR) or other local treatments such as radiofrequency ablation (RFA) and transarterial chemoembolization (TACE), compared to IM monotherapy in long-term survival benefits in patients suffering from GIST liver metastases. METHODS: Our research encompassed 238 patients diagnosed with liver metastases of GISTs from January 2002 to April 2022 at the First Affiliated Hospital of Sun Yat-Sen University. The oncological outcomes of concern included overall survival (OS), progression-free survival (PFS), and liver-specific PFS. RESULTS: Of all 238 patients, 126 were treated with IM alone (IM group), 81 with IM combined with HR (IM+HR group), and 31 with IM combined with RFA/TACE (IM+RFA/TACE group). The median follow-up time was 44.83 months. The median OS in the IM group was 132.60 months and was not reached in either the IM+HR group or the IM+RFA/TACE group. The 10-year OS rate in the IM+HR group was significantly superior to the IM group and the IM+RFA/TACE group (91.9% vs. 61.1% vs. 55.2%, respectively, P =0.015), and the liver-specific PFS ( P =0.642) and PFS ( P =0.369) in the three groups showed a beneficial trend in the combined treatment group. Multivariate analyses showed that age less than or equal to 60 years (HR 0.280, P< 0.001) and IM+HR (HR 0.361, P =0.047) were independently associated with better OS. Achieving no evidence of disease through surgical intervention was independently correlated with enhanced OS (HR 0.099, P =0.034), liver-specific PFS (HR 0.388, P =0.014), and PFS (HR 0.402, P =0.004). CONCLUSIONS: In patients with GIST liver metastases, IM combined with HR might improve OS in selected patients compared with IM alone and IM combined with RFA/TACE. Achieving no evidence of disease status with surgical treatment of patients results in significant prolonging of OS, liver-specific PFS, and PFS.


Subject(s)
Antineoplastic Agents , Gastrointestinal Stromal Tumors , Hepatectomy , Imatinib Mesylate , Liver Neoplasms , Humans , Gastrointestinal Stromal Tumors/therapy , Gastrointestinal Stromal Tumors/drug therapy , Gastrointestinal Stromal Tumors/pathology , Gastrointestinal Stromal Tumors/surgery , Gastrointestinal Stromal Tumors/secondary , Imatinib Mesylate/therapeutic use , Imatinib Mesylate/administration & dosage , Male , Female , Middle Aged , Liver Neoplasms/secondary , Liver Neoplasms/therapy , Liver Neoplasms/drug therapy , Retrospective Studies , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/therapeutic use , Adult , Aged , Combined Modality Therapy , Radiofrequency Ablation , Gastrointestinal Neoplasms/pathology , Gastrointestinal Neoplasms/therapy , Gastrointestinal Neoplasms/drug therapy , Chemoembolization, Therapeutic/methods , Treatment Outcome
3.
World J Clin Cases ; 12(10): 1778-1784, 2024 Apr 06.
Article in English | MEDLINE | ID: mdl-38660078

ABSTRACT

BACKGROUND: Rectocutaneous fistulae are common. The infection originates within the anal glands and subsequently extends into adjacent regions, ultimately resulting in fistula development. Cellular angiofibroma (CAF), also known as an angiomyofibroblastoma-like tumor, is a rare benign soft tissue neoplasm predominantly observed in the scrotum, perineum, and inguinal area in males and in the vulva in females. We describe the first documented case CAF that developed within a rectocutaneous fistula and manifested as a perineal mass. CASE SUMMARY: In the outpatient setting, a 52-year-old male patient presented with a 2-year history of a growing perineal mass, accompanied by throbbing pain and minor scrotal abrasion. Physical examination revealed a soft, well-defined, non-tender mass at the left buttock that extended towards the perineum, without a visible opening. The initial assessment identified a soft tissue tumor, and the laboratory data were within normal ranges. Abdominal and pelvic computed tomography (CT) revealed swelling of the abscess cavity that was linked to a rectal cutaneous fistula, with a track-like lesion measuring 6 cm × 0.7 cm in the left perineal region and attached to the left rectum. Rectoscope examination found no significant inner orifices. A left medial gluteal incision revealed a thick-walled mass, which was excised along with the extending tract, and curettage was performed. Histopathological examination confirmed CAF diagnosis. The patient achieved total resolution during follow-up assessments and did not require additional hospitalization. CONCLUSION: CT imaging supports perineal lesion diagnosis and management. Perineal angiofibromas, even with a cutaneous fistula, can be excised transperineally.

4.
Adv Sci (Weinh) ; : e2402635, 2024 Apr 19.
Article in English | MEDLINE | ID: mdl-38639419

ABSTRACT

Solution-based methods for fabricating all-inorganic perovskite film arrays often suffer from limited control over nucleation and crystallization, resulting in poor homogeneity and coverage. To improve film quality, advanced vapor deposition techniques are employed for continuous film. Here, the vapor deposition strategy to the all-inorganic perovskite films array, enabling area-selective deposition of perovskite through substrate modulation is expanded. It can yield a high-quality perovskite film array with different pixel shapes, various perovskite compositions, and a high resolution of 423 dpi. The resulting photodetector arrays exhibit remarkable optoelectronic performance with an on/off ratio of 13 887 and responsivity of 47.5 A W-1. The device also displays long-term stability in a damp condition for up to 12 h. Moreover, a pulse monitoring sensor based on the perovskite films array demonstrates stable monitoring for pulse signals after being worn for 12 h and with a low illumination of 0.055 mW cm-2, highlighting the potential application in wearable optoelectronic devices.

5.
J Cell Sci ; 2024 Apr 19.
Article in English | MEDLINE | ID: mdl-38639717

ABSTRACT

Activation of the Wnt/ß-catenin signaling pathway by CHIR99021, a specific inhibitor of GSK3ß, induces Tcf7l1 protein degradation, which facilitates the maintenance of an undifferentiated state in mouse embryonic stem cells (mESCs). However, the precise mechanism is still inconclusive. Here, we showed that the overexpression of transducin-ß-like protein 1 (Tbl1) or its family member Tblr1 can decrease Tcf7l1 protein levels, while the knockdown of each increases Tcf7l1 levels without affecting Tcf7l1 transcription. Interestingly, only Tbl1, not Tblr1, interacts with Tcf7l1. Mechanistically, Tbl1 translocates from the cytoplasm into the nucleus in association with ß-catenin after the addition of CHIR99021 and functions as an adaptor to promote the ubiquitination of the Tcf7l1 protein. Functional assays further revealed that enforced expression of Tbl1 is capable of delaying mESC differentiation. In contrast, the knockdown of Tbl1 attenuated the effect of CHIR99021 on Tcf7l1 protein stability and mESC self-renewal. Our results provide insight into the regulatory network of the Wnt/ß-catenin signaling pathway in promoting the maintenance of naïve pluripotency.

6.
Biochem Biophys Res Commun ; 712-713: 149933, 2024 Apr 16.
Article in English | MEDLINE | ID: mdl-38640730

ABSTRACT

BEND family transcription factors directly interact with DNA through BEN domains and have been found across metazoan species. Interestingly, certain insect and mammalian viruses have also hijacked Bend genes into their genome. However, the phylogenetic classification and evolution of these viral BEN domains remain unclear. Building on our previous finding that in silico method accurately determine the 3D model of BEN domains, we used AlphaFold2 to predict the tertiary structures of poxviral BEN domains for comprehensive homologous comparison. We revealed that the majority of poxviral BEN modules exhibit characteristics of type II BEN. Additionally, electrostatic surface potential analysis found various poxviral BEN domains, including the first BEN of OPG067 in Orthopoxvirus, the third BEN of OPG067 in Yatapoxvirus and the third BEN of MC036R in MCV, have positively charged protein surfaces, indicating a structural basis for DNA loading. Notably, MC036R shares structural resemblance with human BEND3, as they both contain four BEN domains and an intrinsically disordered region. In summary, our discoveries provide deeper insights into the functional roles of BEN proteins within poxviruses.

7.
Int J STD AIDS ; : 9564624241248676, 2024 Apr 21.
Article in English | MEDLINE | ID: mdl-38644514

ABSTRACT

This paper seeks to determine the effect of combination anti-PD-1 and antiretroviral therapy (ART) on people living with HIV (PLWH) with advanced gastric cancer. In our case, a PLWH with recurrent locally advanced gastric cancer was treated with anti-PD-1 inhibitor and ART. A significant reduction in tumor lesions (as demonstrated by contrast-enhanced CT imaging) and a better quality of life were achieved following treatment. There have been limited studies on the treatment of PLWH with advanced gastric cancer. Chemotherapy is most often used, however, with unsatisfactory outcomes. to date, there have been no published reports on the use of PD-1 inhibitors in PLWH with advanced gastric cancer. Our report provides a valuable reference for future management of such patients.

8.
Zhongguo Zhong Yao Za Zhi ; 49(4): 932-941, 2024 Feb.
Article in Chinese | MEDLINE | ID: mdl-38621900

ABSTRACT

This study explored the biosynthesis of bufadienolides(BDs) in Bufo bufo gargarizans to solve the dilemma of the decreasing resources of B. bufo gargarizans and provide a theoretical basis for the sustainable utilization of the resources. Ultra-high performance liquid chromatography-Orbitrap-mass spectrometry(UHPLC-Orbitrap-MS) was employed to detect the synthesis sites of BDs in B. bufo gargarizans, and the results were verified by desorption electrospray ionization-mass spectrometry imaging(DESI-MSI) and homogenate incubation experiments. BDs in B. bufo gargarizans had the highest content in the liver and the highest concentration in the gallbladder, in addition to the parotid gland and skin, which suggested that the liver could synthesize BDs. The results of DESI-MSI also showed that BDs were mainly enriched in the liver rather than the immature parotid gland. The incubation experiment of liver homogenates demonstrated the liver of B. bufo gargarizans had the ability to synthesize BDs. This study showed that the liver was a major organ for the synthesis of BDs in B. bufo gargarizans during metamorphosis, development, and growth, which provided strong theoretical support for the biosynthesis of BDs and the sustainable utilization of B. bufo gargarizans resources.


Subject(s)
Bufanolides , Animals , Bufo bufo , Tissue Distribution , Bufonidae , Spectrometry, Mass, Electrospray Ionization
9.
Pediatr Neonatol ; 2024 Apr 15.
Article in English | MEDLINE | ID: mdl-38627111

ABSTRACT

BACKGROUND: Previous research has indicated a negative correlation between exclusive breastfeeding and the incidence of Kawasaki disease (KD). However, the validation of this discovery through meta-analytical studies has been lacking. Furthermore, uncertainties persist regarding whether breastfeeding reduces the risk of coronary artery lesions (CAL) or resistance to intravenous immunoglobulin (IVIG). METHODS: A systematic exploration of the MEDLINE, Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, EMBASE, and ClinicalTrials.gov databases was conducted to identify longitudinal or randomized controlled trials investigating the efficacy of breastfeeding in preventing KD. The primary focus was on the incidence of KD, with secondary emphasis placed on the incidence of CAL and IVIG resistance. Data were pooled using a frequentist-restricted maximum-likelihood random-effects model. RESULTS: Of the 179 potentially eligible studies identified, five (n = 1,982,634) were included. The analysis revealed a significantly lower risk of KD (expressed as odds ratio, with 95% confidence intervals and p-values) in comparisons between exclusive breastfeeding and formula feeding (0.62, 0.43-0.91, p = 0.014), exclusive breastfeeding/partial breastfeeding and formula feeding (0.66, 0.46- 0.96, p = 0.03), and exclusive breastfeeding and partial breastfeeding/formula feeding (0.81, 0.74- 0.90, p < 0.01). However, no significant difference was observed in the risk of developing KD when comparing partial breastfeeding to formula feeding exclusively. Regarding secondary outcomes, no statistically significant difference was found in the risk of CAL or IVIG resistance across any comparison formats. CONCLUSIONS: Our study suggests that breastfeeding correlated with a reduced risk of KD but not with a reduced risk of CAL or IVIG resistance. These findings advocate for the implementation of breastfeeding policies in clinical practice.

10.
Yi Chuan ; 46(3): 242-255, 2024 Mar 20.
Article in English | MEDLINE | ID: mdl-38632102

ABSTRACT

To understand the genome-wide information of the GRF family genes in broomcorn millet and their expression profile in the vegetative meristems, bioinformatic methods and transcriptome sequencing were used to analyze the characteristics, physical and chemical properties, phylogenetic relationship, chromosome distribution, gene structure, cis-acting elements and expression profile in stem meristem for the GRF family members. The results showed that the GRF gene family of millet contains 21 members, and the PmGRF gene is unevenly distributed on 12 chromosomes. The lengths of PmGRF proteins vary from 224 to 618 amino acids, and the isoelectric points are between 4.93-9.69. Each member of the family has 1-4 introns and 2-5 exons. The protein PmGRF13 is localized in both the nucleus and chloroplast, and the rest PmGRF proteins are located in the nucleus. Phylogenetic analysis showed that the 21 GRF genes were divided into 4 subfamilies (A,B,C and D) in broomcorn millet. The analysis of cis-acting elements showed that there were many cis-acting elements involved in light response, hormone response, drought induction, low temperature response and other environmental stress responses in the 2000 bp sequence upstream of the GRF genes. Transcriptome sequencing and qRT-PCR analyses showed that the expression levels of PmGRF3 and PmGRF12 in the dwarf variety Zhang778 were significantly higher than those of the tall variety Longmi12 in the internode and node meristems at the jointing stage, while the expression patterns of PmGRF4, PmGRF16 and PmGRF21 were reverse. In addition, the expression levels of PmGRF2 and PmGRF5 in the internode of Zhang778 were significantly higher than Longmi12. The other GRF genes were not or insignificantly expressed. These results indicated that seven genes, PmGRF2, PmGRF3, PmGRF4, PmGRF5, PmGRF12, PmGRF16 and PmGRF21, were related to the formation of plant height in broomcorn millet.


Subject(s)
Panicum , Phylogeny , Panicum/chemistry , Panicum/genetics , Transcription Factors/genetics , Meristem , Genome, Plant
11.
Proc Natl Acad Sci U S A ; 121(17): e2314353121, 2024 Apr 23.
Article in English | MEDLINE | ID: mdl-38635634

ABSTRACT

Auxin regulates plant growth and development through downstream signaling pathways, including the best-known SCFTIR1/AFB-Aux/IAA-ARF pathway and several other less characterized "noncanonical" pathways. Recently, one SCFTIR1/AFB-independent noncanonical pathway, mediated by Transmembrane Kinase 1 (TMK1), was discovered through the analyses of its functions in Arabidopsis apical hook development. Asymmetric accumulation of auxin on the concave side of the apical hook triggers DAR1-catalyzed release of the C-terminal of TMK1, which migrates into the nucleus, where it phosphorylates and stabilizes IAA32/34 to inhibit cell elongation, which is essential for full apical hook formation. However, the molecular factors mediating IAA32/34 degradation have not been identified. Here, we show that proteins in the CYTOKININ INDUCED ROOT WAVING 1 (CKRW1)/WAVY GROWTH 3 (WAV3) subfamily act as E3 ubiquitin ligases to target IAA32/34 for ubiquitination and degradation, which is inhibited by TMK1c-mediated phosphorylation. This antagonistic interaction between TMK1c and CKRW1/WAV3 subfamily E3 ubiquitin ligases regulates IAA32/34 levels to control differential cell elongation along opposite sides of the apical hook.


Subject(s)
Arabidopsis Proteins , Arabidopsis , F-Box Proteins , Ubiquitin-Protein Ligases/genetics , Ubiquitin-Protein Ligases/metabolism , Arabidopsis Proteins/genetics , Arabidopsis Proteins/metabolism , Arabidopsis/metabolism , Indoleacetic Acids/metabolism , Signal Transduction , Ubiquitins/metabolism , Gene Expression Regulation, Plant , F-Box Proteins/genetics , F-Box Proteins/metabolism
12.
Environ Sci Technol ; 58(14): 6149-6157, 2024 Apr 09.
Article in English | MEDLINE | ID: mdl-38556993

ABSTRACT

The global management for persistent, mobile, and toxic (PMT) and very persistent and very mobile (vPvM) substances has been further strengthened with the rapid increase of emerging contaminants. The development of a ready-to-use and publicly available tool for the high-throughput screening of PMT/vPvM substances is thus urgently needed. However, the current model building with the coupling of conventional algorithms, small-scale data set, and simplistic features hinders the development of a robust model for screening PMT/vPvM with wide application domains. Here, we construct a graph convolutional network (GCN)-enhanced model with feature fusion of a molecular graph and molecular descriptors to effectively utilize the significant correlation between critical descriptors and PMT/vPvM substances. The model is built with 213,084 substances following the latest PMT classification criteria. The application domains of the GCN-enhanced model assessed by kernel density estimation demonstrate the high suitability for high-throughput screening PMT/vPvM substances with both a high accuracy rate (86.6%) and a low false-negative rate (6.8%). An online server named PMT/vPvM profiler is further developed with a user-friendly web interface (http://www.pmt.zj.cn/). Our study facilitates a more efficient evaluation of PMT/vPvM substances with a globally accessible screening platform.


Subject(s)
Algorithms , High-Throughput Screening Assays
13.
Parkinsonism Relat Disord ; 123: 106949, 2024 Mar 29.
Article in English | MEDLINE | ID: mdl-38564831

ABSTRACT

INTRODUCTION: Gait initiation (GI) includes automatic and voluntary movements. However, research on their impact on the first step in patients with Parkinson's disease (PD) and their relationship to freezing of gait (FOG) is lacking. We examined the effects of automatic movements (anticipatory postural adjustments [APAs]) and voluntary movements (limits of stability [LOS]) on the first step (first-step duration and first-step range of motion), along with their early recognition and prediction of slight FOG. METHODS: Twenty-three patients with PD and slight freezing (PD + FOG) and 25 non-freezing patients with PD (PD-FOG) were tested while off medications and compared with 24 healthy controls (HC). All participants completed a 7-m Stand and Walk Test (7 m SAW) and wore inertial sensors to quantify the APAs and first step. LOS was quantified by dynamic posturography in different directions using a pressure platform. We compared differences among all three groups, analysed correlations, and evaluated their predictive value for slight FOG. RESULTS: In PD + FOG, APAs and LOS were worse than those in the PD-FOG and HC groups (p < 0.001), and the first step was worse than that in HC (p < 0.001). APAs were correlated mainly with the first-step duration. APAs and LOS were correlated with the first-step range of motion. APAs have been recognized as independent predictors of FOG, and their combination with LOS enhances predictive sensitivity. CONCLUSION: APAs and LOS in patients with PD directly affect the first step during GI. In addition, the combination of APAs and LOS helped predict slight FOG.

14.
Br J Sociol ; 2024 Apr 03.
Article in English | MEDLINE | ID: mdl-38568931

ABSTRACT

Social and spatial mobility have been subject to substantial recent sociological and policy debate. Complementing other recent work, in this paper we explore these patterns in relation to higher education. Making use of high-quality data from the higher education statistics agency (HESA), we ran a set of multilevel models to test whether the local authority areas where young people grow up influence social and spatial mobility into a higher professional or managerial job on graduation. We found entry to these patterns reflect pre-existing geographies of wealth and income, with more affluent rural and suburban areas in South-East England having higher levels of entry to these occupations. Graduates clustered from major cities tended to be spatially immobile and those from peripheral areas further away from these cities show a higher density of long-distance moves following graduation. We also explored the intersection between social and spatial mobility for graduates with the economic geography of Britain, showing that access to high-class occupations is not necessarily associated with long-distance moves across most British districts. Our evidence further suggests that the 'London effect', where working-class students have higher school attainment than their peers elsewhere, may not continue through to graduate employment.

15.
Opt Express ; 32(6): 8506-8519, 2024 Mar 11.
Article in English | MEDLINE | ID: mdl-38571108

ABSTRACT

In this paper, a 1 × 2 photonic switch is designed based on a silicon-on-insulator (SOI) platform combined with the phase change material (PCM), Sb2S3, assisted by the direct binary search (DBS) algorithm. The designed photonic switch exhibits an impressive operating bandwidth ranging from 1450 to 1650 nm. The device has an insertion loss (IL) from 0.44 dB to 0.70 dB (of less than 0.7 dB) and cross talk (CT) from -26 dB to -20 dB (of less than -20 dB) over an operating bandwidth of 200 nm, especially an IL of 0.52 dB and CT of -24 dB at 1550 nm. Notably, the device is highly compact, with footprints of merely 3 × 4 µm2. Furthermore, we have extended the device's functionality for multifunctional operation in the C-band that can serve as both a 1 × 2 photonic switch and a 3 dB photonic power splitter. In the photonic switch mode, the device demonstrates an IL of 0.7 dB and a CT of -13.5 dB. In addition, when operating as a 3 dB photonic power splitter, the IL is less than 0.5 dB.

16.
Opt Express ; 32(6): 9456-9467, 2024 Mar 11.
Article in English | MEDLINE | ID: mdl-38571180

ABSTRACT

Traditional optical information recognition (OIR), particle capture and manipulation require many optical devices or mechanical moving system components to achieve a specific function, which is difficult to achieve integration. This paper proposes a new method to realize these functions by using multi-focus metalens combining spectrum and polarization selection. The design incorporates three spectral bands, namely 500 nm, 580 nm, and 660 nm, within the visible light range. Additionally, it utilizes either left-handed or right-handed circularly polarized (LCP/RCP) light, resulting in six distinct focus focusing effects on a single focal plane. By analyzing the normalized light intensity (NLI) at the corresponding focus position, the OIR of any wavelength and polarization detection in the design can be realized, and the particle capture at different focusing positions can be realized. Our work can provide a new idea for the high integration of on-chip light recognition and operation and inspire the design of a highly integrated optical system with a smaller size and more substantial function.

17.
Stem Cell Res Ther ; 15(1): 96, 2024 Apr 03.
Article in English | MEDLINE | ID: mdl-38570892

ABSTRACT

BACKGROUND: Ovarian ageing is one of the major issues that impacts female fertility. Mesenchymal stem cell (MSC)-based therapy has made impressive progress in recent years. However, the efficacy and safety of MSCs, as nonautologous components, remain to be further verified. METHODS: Two common sources of MSCs, umbilical cord-derived MSCs (UC-MSCs) and adipose tissue-derived MSCs (AD-MSCs), were orthotopically transplanted into a mouse model of ovarian ageing to evaluate their therapeutic effects. The safety of the treatment was further evaluated, and RNA sequencing was performed to explore the underlying mechanisms involved. RESULTS: After orthotopic transplantation of MSCs into the ovary, the oestrous cycle, ovarian weight, number and proportion of primary follicles, granulosa cell proliferation, and angiogenesis were improved. The effects of AD-MSCs were superior to those of UC-MSCs in several indices, such as post-transplant granulosa cell proliferation, ovarian weight and angiogenesis. Moreover, the tumorigenesis, acute toxicity, immunogenicity and biodistribution of MSCs were evaluated, and both AD-MSCs and UC-MSCs were found to possess high safety profiles. Through RNA sequencing analysis, enhancement of the MAPK cascade was observed, and long-term effects were mainly linked to the activation of immune function. CONCLUSIONS: Orthotopic transplantation of MSCs displays significant efficacy and high safety for the treatment of ovarian ageing in mice.


Subject(s)
Mesenchymal Stem Cell Transplantation , Mesenchymal Stem Cells , Mice , Animals , Female , Ovary/metabolism , Tissue Distribution , Cell Proliferation , Mesenchymal Stem Cells/metabolism , Disease Models, Animal , Umbilical Cord
18.
Front Psychol ; 15: 1352342, 2024.
Article in English | MEDLINE | ID: mdl-38577126

ABSTRACT

Academic procrastination is a common concern among adolescents, but the correlation between shyness and academic procrastination and the internal mechanisms have not yet been thoroughly investigated. Based on a questionnaire survey with 1,279 Chinese middle school students, this study examined the effect of shyness on academic procrastination and its underlying mechanism of self-regulation and self-focused attention. Results revealed that: (1) shyness significantly predicted academic procrastination. (2) Self-regulation mediated the relationship between shyness and academic procrastination. (3) Self-focused attention played a moderating role in the first half of this mediation process. Specifically, higher level of self-focused attention strengthened the predictive effect of shyness on self-regulation. These results underscored the latent risks and protective factors associated with shyness, self-regulation, and self-focused attention in adolescent academic procrastination. In future research and interventions, attention may be directed towards improving individual internal factors to assist adolescents in effectively addressing issues related to academic procrastination.

19.
Chem Sci ; 15(14): 5163-5173, 2024 Apr 03.
Article in English | MEDLINE | ID: mdl-38577356

ABSTRACT

Organic photoluminescent macrocyclic hosts have been widely advanced in many fields. Phosphorescent hosts with the ability to bind organic guests have rarely been reported. Herein, acyclic cucurbituril modified with four carboxylic acids (ACB-COOH) is mined to present uncommon purely organic room-temperature phosphorescence (RTP) at 510 nm with a lifetime of 1.86 µs. Its RTP properties are significantly promoted with an extended lifetime up to 2.12 s and considerable quantum yield of 6.29% after assembly with a polyvinyl alcohol (PVA) matrix. By virtue of the intrinsic self-crimping configuration of ACB-COOH, organic guests, including fluorescence dyes (Rhodamine B (RhB) and Pyronin Y (PyY)) and a drug molecule (morphine (Mor)), could be fully encapsulated by ACB-COOH to attain energy transfer involving phosphorescent acyclic cucurbituril. Ultimately, as-prepared systems are successfully exploited to establish multicolor afterglow materials and visible sensing of morphine. As an expansion of phosphorescent acyclic cucurbituril, the host afterglow color can be readily regulated by attaching different aromatic sidewalls. This study develops the fabrication strategies and application scope of a supramolecular phosphorescent host and opens up a new direction for the manufacture of intelligent long-lived luminescent materials.

20.
Sheng Wu Gong Cheng Xue Bao ; 40(4): 1157-1169, 2024 Apr 25.
Article in Chinese | MEDLINE | ID: mdl-38658155

ABSTRACT

Cytokinin response factors (CRFs), as unique transcription factors in plants, play crucial roles in regulating development, phytohormone signaling pathway, and stress responses. In this study, we identified nine CRF genes from the rice genome by conducting a BLAST analysis using the protein sequences of twelve Arabidopsis AtCRFs. These genes are located on seven different rice chromosomes. We conducted a comprehensive analysis of the conserved domains, physicochemical properties, secondary structures, and phylogenetic relationships of rice CRF proteins using various online tools and local software. Additionally, we analyzed the exon-intron structures and cis-acting elements of OsCRFs, and found an abundance of elements relevant to phytohormone response and stress response on the promoters of rice CRF genes. Spatial-temporal expression pattern analysis revealed that four of the OsCRFs were barely expressed in all tested samples, while the other five were highly expressed in the leaf, panicle, or seed of rice. Microarray data showed that OsCRF genes are regulated to varying degrees by abscisic acid, auxin, cytokinin, and jasmonic acid. Furthermore, through analyzing the RNA-seq data, we found that OsCRFs are primarily involved in plant response to temperature stress (chilling and heat), with several OsCRFs also implicated in drought response, while hardly any respond to salt stress. This study provides an important basis for the functional characterization of rice CRF family genes.


Subject(s)
Cytokinins , Gene Expression Regulation, Plant , Oryza , Phylogeny , Plant Proteins , Oryza/genetics , Oryza/metabolism , Plant Proteins/genetics , Plant Proteins/metabolism , Cytokinins/metabolism , Plant Growth Regulators/metabolism , Plant Growth Regulators/pharmacology , Transcription Factors/genetics , Transcription Factors/metabolism , Multigene Family , Stress, Physiological/genetics , Gene Expression Profiling , Abscisic Acid/pharmacology , Abscisic Acid/metabolism
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