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2.
Support Care Cancer ; 32(4): 264, 2024 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-38564034

RESUMO

OBJECTIVE: This paper aims to provide an evidence-based summary of the most effective strategies for comprehensive healthcare of chemotherapy-induced peripheral neuropathy (CIPN) in cancer patients. METHOD: Following the "6S" model, relevant evidence on CIPN management was collected from reputable evidence-based resource websites and databases nationally and internationally. The included articles were evaluated for methodological quality, and evidence was extracted using the Australian JBI Evidence-based Health Care Center's literature evaluation standard (2016 edition). RESULTS: A total of 60 articles were included in this study, comprising 2 guidelines, 5 expert consensus statements, and 53 systematic reviews. The findings of these articles were summarized across 7 dimensions, including risk factor screening, assessment, diagnosis, prevention, treatment, management, and health education, resulting in the identification of 42 relevant pieces of evidence. CONCLUSIONS: This study provides a comprehensive synthesis of evidence-based recommendations for managing CIPN in cancer patients, offering guidance for healthcare professionals engaged in clinical practice. However, when implementing these recommendations, it is crucial to consider the individual patient's clinical circumstances, preferences, and expert judgment, ensuring feasibility and applicability in real-world clinical settings.


Assuntos
Antineoplásicos , Neoplasias , Doenças do Sistema Nervoso Periférico , Humanos , Austrália , Assistência Integral à Saúde , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/terapia , Neoplasias/tratamento farmacológico , Antineoplásicos/efeitos adversos
3.
World J Clin Cases ; 12(10): 1772-1777, 2024 Apr 06.
Artigo em Inglês | MEDLINE | ID: mdl-38660073

RESUMO

BACKGROUND: Purpureocillium lilacinum (P. lilacinum) is a saprophytic fungus widespread in soil and vegetation. As a causative agent, it is very rarely detected in humans, most commonly in the skin. CASE SUMMARY: In this article, we reported the case of a 72-year-old patient with chronic lymphocytic leukemia who was admitted with cough and fever. Computed tomography revealed an infection in the right lower lobe. Bronchoalveolar lavage fluid culture and metagenomic next-generation sequencing were ultimately confirmed to have a pulmonary infection with P. lilacinum. She was eventually discharged with good outcomes after treatment with isavuconazole. CONCLUSION: Pulmonary infection with P. lilacinum was exceedingly rare. While currently there are no definitive therapeutic agents, there are reports of high resistance to amphotericin B and fluconazole and good sensitivity to second-generation triazoles. The present report is the first known use of isavuconazole for pulmonary P. lilacinum infection. It provides new evidence for the characterization and treatment of clinical P. lilacinum lung infections.

4.
Eur J Pharmacol ; 971: 176522, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38522640

RESUMO

Global burden of hepatocellular carcinoma (HCC) is increasing. Chemotherapy and immunotherapy are the prevailing options for therapy. Developing new therapeutic strategies for HCC patients is still highly desirable. Recent studies demonstrate that cryptotanshinone is capable of inhibiting tumor growth in HCC and induces antitumor immunity in vitro. In our previous research, we discovered a new cryptotanshinone derivative 11 as an effective immunoregulatory enzyme indoleamine 2, 3-dioxygenase 1 (IDO1) inhibitor. This study aims to evaluate its in vitro and in vivo antitumor activity against hepatocellular carcinoma. 11 displayed robust anti-proliferative activity against HCC cell lines and promoted apoptosis of HCC cell line through the mitochondrial-mediated apoptotic pathway. In H22 tumor-bearing mice models, 11 exhibited significant in vivo anti-tumor activity with different administration routes. And no obvious toxicity was observed. RNA-seq analysis demonstrated the differential expressed genes and alteration of key pathways associated with immune responses after administration of 11. Up-regulation of anti-tumor cytokines and down-regulation of cytokines that promote tumor growth were indicated and further validated. Our study demonstrates that 11 exhibits promising anti-tumor activity both in vitro and in vivo against hepatocellular carcinoma cancer. It is a lead compound for HCC immunotherapy and is worthy for further development.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Fenantrenos , Humanos , Animais , Camundongos , Carcinoma Hepatocelular/genética , Neoplasias Hepáticas/genética , Linhagem Celular Tumoral , Ensaios Antitumorais Modelo de Xenoenxerto , Citocinas/farmacologia , Apoptose
5.
Zhongguo Gu Shang ; 37(3): 228-34, 2024 Mar 25.
Artigo em Chinês | MEDLINE | ID: mdl-38515408

RESUMO

OBJECTIVE: To compare clinical efficacy and complication rate of percutaneous endoscopic transforaminal discectomy(PETD),percutaneous endoscopic interlaminar discectomy (PEID) and unilateral biportal endoscopic (UBE) in treating single-segment lumbar disc herniation(LDH). METHODS: From October 2019 to August 2021,121 LDH patients with single-segment treated by spinal endoscopy were retrospectively analyzed and divided into three groups. In PETD group,there were 48 patients,including 19 males and 29 females,aged from 18 to 72 years old with an average of (44.0±13.9) years old;3 patients with L3,4 segments,27 patients with L4,5 segments,and 18 patients with L5S1 segments. In PEID group,there were 43 patients,including 23 males and 20 females,aged from 20 to 69 years old with an average of (40.1±12.1) years old;1 patient with L3,4 segments,15 patients with L4,5 segments,and 27 patients with L5S1 segments. In UBE group,there were 30 patients,including 12 males and 18 females,aged from 29 to 72 years old with an average of (41.2±15.0) years old;1 patient with L3,4 segments,18 patients with L4,5 segments,and 11 patients with L5S1 segments. Operation time,blood loss,fluoroscopy times and complications among three groups were observed and compared. Before opertaion,3 months after operation and at the latest follow-up,visual analogue scale (VAS) was used to evaluate low back pain and lower extremity pain,Oswestry disfunction index (ODI) was used to evaluate lumbar function,and modified MacNab was used to evaluate clinical efficacy at the latest follow-up. RESULTS: All patients were performed endoscopic spinal surgery completly and were followed up for at least 12 months. One patient occurred dural sac rupture both in PETD and PEID group,and dural sac rupture was small,and there was no obvious discomfort after operation. Two patients were occurred intraoperative rupture of dural sac in UBE group. One patient was occurred cerebrospinal fluid leakage after operation,and was improved after rest in supine position and fluid rehydration. One patient without no significant postoperative discomfort. (1)There were no significant difference in operating time,blood loss and hospital stay between PETD and PEID group (P>0.05),while UBE group was higher than those of PETD and PEID group (P<0.05). There was no statistical significance in fluoroscopy times between PEID and UBE group (P>0.05),but PETD group was higher than that of PEID and UBE group (P<0.05). (2)VAS of low back pain at 3 months after operation in UBE group was higher than that in PETD and PEID group (P<0.05),but there was no significant difference between PETD and PEID group (P>0.05). At the latest follow-up,there was no significant difference in VAS of low back pain among three groups (P>0.05). (3)Lower extremity pain of VAS and ODI among 3 groups after operation were significantly improved at all time points compared with those before opertaion(P<0.05),and there were no statistical significance between groups (P>0.05),and there were no statistical significance in interaction between different time points and operation groups (P>0.05). (4) At the latest follow-up,according to the modified MacNab standard,the results of PETD group were excellent in 27 patients,good in 16 patients,moderate in 4 patients,poor in 1 patient;in PEID group,27 patients got excellent result,12 good,3 moderate,and 1 poor;in UBE group,16 patients got excellent,10 good,2 moderate,and 2 poor. There was no significant difference among three groups (χ2=0.308,P>0.05). Recurrence of lumbar disc herniation occurred in 1 patient among each three groups,symptoms were improved in 2 patients after symptomatic treatment,and 1 patient was treated in other hospitals. CONCLUSION: PETD,PEID and UBE techniques could achieve good early clinical effects in treating lumbar disc herniation with similar complication rates. Both of PETD and PEID are single-channel minimally invasive surgery,with mild intraoperative tissue damage and quick postoperative recovery; while intraoperative fluoroscopy of PETD was relatively more frequent, and PEID was more suitable for L5S1 segment;UBE is a two-channel surgery,in which the intraoperative soft tissue damage is more severe,but exposure is broad,which is more suitable for complex cases.


Assuntos
Discotomia Percutânea , Deslocamento do Disco Intervertebral , Dor Lombar , Masculino , Feminino , Humanos , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Deslocamento do Disco Intervertebral/cirurgia , Deslocamento do Disco Intervertebral/etiologia , Dor Lombar/etiologia , Estudos Retrospectivos , Vértebras Lombares/cirurgia , Endoscopia/efeitos adversos , Endoscopia/métodos , Discotomia Percutânea/efeitos adversos , Resultado do Tratamento
6.
Clin Pharmacol Drug Dev ; 13(5): 499-505, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38478175

RESUMO

Nifedipine is a potent antihypertensive medication classified as a dihydropyridine calcium channel blocker. The objective of this trial was to assess the bioequivalence of a 30-mg nifedipine controlled-release tablet and a reference drug in a cohort of healthy Chinese individuals. Two independent open-label, randomized, single-dose, crossover studies were conducted, 1 under fasting conditions (N = 44, with 1 participant dropping out midway) and the other under fed conditions (N = 44, with 4 participants dropping out midway). Plasma concentrations of nifedipine were determined using liquid chromatography-mass spectrometry, and pharmacokinetic (PK) parameters were calculated using noncompartmental analysis with Phoenix WinNonlin 8.0 software. In both fasting and fed studies, reasonable bioequivalence was observed for the PK parameters of both the test product and the reference drug. A good safety profile was demonstrated for both the test product and reference drug, with no serious adverse events reported, and both were similarly well tolerated. An important observation with food coadministration was that systemic exposure to nifedipine (based on area under the curve, AUC0-∞) was reduced by approximately 12%. The bioequivalence of the test product and reference drug under fasting/fed conditions in healthy subjects in China was demonstrated by the study results.


Assuntos
Área Sob a Curva , Bloqueadores dos Canais de Cálcio , Estudos Cross-Over , Preparações de Ação Retardada , Jejum , Interações Alimento-Droga , Nifedipino , Comprimidos , Equivalência Terapêutica , Humanos , Nifedipino/farmacocinética , Nifedipino/administração & dosagem , Nifedipino/efeitos adversos , Adulto , Masculino , Feminino , Adulto Jovem , Bloqueadores dos Canais de Cálcio/farmacocinética , Bloqueadores dos Canais de Cálcio/administração & dosagem , Bloqueadores dos Canais de Cálcio/efeitos adversos , Voluntários Saudáveis , Povo Asiático , China , Pessoa de Meia-Idade , Administração Oral , População do Leste Asiático
7.
BMC Bioinformatics ; 25(1): 91, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38429654

RESUMO

BACKGROUND: Uncovering functional genetic variants from an allele-specific perspective is of paramount importance in advancing our understanding of gene regulation and genetic diseases. Recently, various allele-specific events, such as allele-specific gene expression, allele-specific methylation, and allele-specific binding, have been explored on a genome-wide scale due to the development of high-throughput sequencing methods. RNA secondary structure, which plays a crucial role in multiple RNA-associated processes like RNA modification, translation and splicing, has emerged as an essential focus of relevant research. However, tools to identify genetic variants associated with allele-specific RNA secondary structures are still lacking. RESULTS: Here, we develop a computational tool called 'AStruct' that enables us to detect allele-specific RNA secondary structure (ASRS) from RT-stop based structuromic probing data. AStruct shows robust performance in both simulated datasets and public icSHAPE datasets. We reveal that single nucleotide polymorphisms (SNPs) with higher AStruct scores are enriched in coding regions and tend to be functional. These SNPs are highly conservative, have the potential to disrupt sites involved in m6A modification or protein binding, and are frequently associated with disease. CONCLUSIONS: AStruct is a tool dedicated to invoke allele-specific RNA secondary structure events at heterozygous SNPs in RT-stop based structuromic probing data. It utilizes allelic variants, base pairing and RT-stop information under different cell conditions to detect dynamic and functional ASRS. Compared to sequence-based tools, AStruct considers dynamic cell conditions and outperforms in detecting functional variants. AStruct is implemented in JAVA and is freely accessible at: https://github.com/canceromics/AStruct .


Assuntos
Regulação da Expressão Gênica , RNA , RNA/genética , RNA/química , Alelos , Splicing de RNA , Sequenciamento de Nucleotídeos em Larga Escala/métodos
8.
J Am Chem Soc ; 146(11): 7616-7627, 2024 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-38446772

RESUMO

Natural products and their analogues are significant sources of therapeutic lead compounds. However, synthetic strategies for generating large collections of these molecules remain a significant challenge. The most difficult step in their synthesis is the design of a common intermediate that can be easily transformed into natural products belonging to different families. This study demonstrates the evolution of synthetic tactics designed to assemble the functionalized piperidines present in indole alkaloids from a common intermediate. More importantly, we also report a previously unknown Ir- and Er-catalyzed dehydrogenative spirocyclization reaction that enables direct access to spirocyclic oxindole alkaloids. As a practical application, the asymmetric total syntheses of 29 natural alkaloids belonging to different families were accomplished by following a uniform synthetic route. The proposed methodology extends the capability of the iridium-catalyzed dehydrogenative coupling reaction to the realm of indole-alkaloid synthesis and provides new opportunities for the efficient preparation of natural product-like molecules.


Assuntos
Alcaloides , Produtos Biológicos , Humanos , Estereoisomerismo , Alcaloides Indólicos , Oxindóis
9.
PNAS Nexus ; 3(1): pgad422, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38169910

RESUMO

Convergent cross-mapping (CCM) has attracted increased attention recently due to its capability to detect causality in nonseparable systems under deterministic settings, which may not be covered by the traditional Granger causality. From an information-theoretic perspective, causality is often characterized as the directed information (DI) flowing from one side to the other. As information is essentially nondeterministic, a natural question is: does CCM measure DI flow? Here, we first causalize CCM so that it aligns with the presumption in causality analysis-the future values of one process cannot influence the past of the other, and then establish and validate the approximate equivalence of causalized CCM (cCCM) and DI under Gaussian variables through both theoretical derivations and fMRI-based brain network causality analysis. Our simulation result indicates that, in general, cCCM tends to be more robust than DI in causality detection. The underlying argument is that DI relies heavily on probability estimation, which is sensitive to data size as well as digitization procedures; cCCM, on the other hand, gets around this problem through geometric cross-mapping between the manifolds involved. Overall, our analysis demonstrates that cross-mapping provides an alternative way to evaluate DI and is potentially an effective technique for identifying both linear and nonlinear causal coupling in brain neural networks and other settings, either random or deterministic, or both.

10.
BMC Oral Health ; 24(1): 82, 2024 Jan 16.
Artigo em Inglês | MEDLINE | ID: mdl-38229133

RESUMO

Required for meiotic nuclear division 5 homolog A (RMND5A), a novel ubiquitin E3 Ligase, has been reported to correlate with poor prognosis of several cancers. However, its role in endothelial cells has not been reported. In this study, overexpression of RMND5A in human umbilical vein endothelial cells (HUVECs) was performed via lentiviral infection, followed by MTT, would healing and tube formation assay as well as signaling analysis. Moreover, crosstalk between HUVECs and oral squamous cell carcinoma (OSCC) cells was investigated by indirect co-culture with condition medium or tumor cell derived exosomes. Our results showed that overexpression of RMND5A reduced the proliferation, migration and tube formation ability of HUVECs by inhibiting the activation of ERK and NF-κB pathway. Interestingly, OSCC cells can inhibit RMND5A expression of endothelial cells via exosomal miR-21. In summary, our present study unveils that OSCC cells can activate endothelial cells via exosomal miR-21/RMND5A pathway to promote angiogenesis, which may provide novel therapeutic targets for the treatment of OSCC.


Assuntos
Carcinoma de Células Escamosas , MicroRNAs , Neoplasias Bucais , Humanos , MicroRNAs/genética , MicroRNAs/metabolismo , Carcinoma de Células Escamosas/patologia , Proliferação de Células , Neoplasias Bucais/patologia , Comunicação Celular , Células Endoteliais da Veia Umbilical Humana/metabolismo , Células Endoteliais da Veia Umbilical Humana/patologia , Movimento Celular
11.
NAR Cancer ; 6(1): zcad063, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38213995

RESUMO

Cis-regulatory elements (CREs) and super cis-regulatory elements (SCREs) are non-coding DNA regions which influence the transcription of nearby genes and play critical roles in development. Dysregulated CRE and SCRE activities have been reported to alter the expression of oncogenes and tumor suppressors, thereby regulating cancer hallmarks. To address the strong need for a comprehensive catalogue of dysregulated CREs and SCREs in human cancers, we present TSCRE (http://tscre.zsqylab.com/), an open resource providing tumor-specific and cell type-specific CREs and SCREs derived from the re-analysis of publicly available histone modification profiles. Currently, TSCRE contains 1 864 941 dysregulated CREs and 68 253 dysregulated SCREs identified from 1366 human patient samples spanning 17 different cancer types and 9 histone marks. Over 95% of these elements have been validated in public resources. TSCRE offers comprehensive annotations for each element, including associated genes, expression patterns, clinical prognosis, somatic mutations, transcript factor binding sites, cancer-type specificity, and drug response. Additionally, TSCRE integrates pathway and transcript factor enrichment analyses for each study, enabling in-depth functional and mechanistic investigations. Furthermore, TSCRE provides an interactive interface for users to explore any CRE and SCRE of interest. We believe TSCRE will be a highly valuable platform for the community to discover candidate cancer biomarkers.

12.
BMC Health Serv Res ; 24(1): 116, 2024 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-38254152

RESUMO

BACKGROUND: Patient follow-up is an essential component of hospital management. In the current information era, the patient follow-up scheme is expected to be replaced by Internet technology. This study constructed a cloud follow-up platform for gynecological chemotherapy patients and assessed its cost-effectiveness and patients' feedback. METHODS: A total of 2,538 patients were followed up using a cloud follow-up system between January and October 2021. Prior to this, 690 patients were followed manually via telephone calls. Patients' characteristics, follow-up rate, satisfaction, and session duration were compared between the cloud follow-up and manual follow-up groups. In addition, the read rate of health education materials in the cloud follow-up group was analyzed. RESULTS: General information, including age, education attainment, cancer stage, and disease category, and follow-up rate (cloud: 6,957/7,614, 91.4%; manual: 1,869/2,070, 90.3%; P = 0.13) did not significantly differ between the two groups. The follow-up satisfaction of the cloud follow-up patients was significantly better than that of the manual follow-up group (cloud: 7,192/7,614, 94.5%; manual: 1,532/2,070, 74.0%; P<0.001). The time spent on the follow-up was approximately 1.2 h for 100 patients in the cloud follow-up group and 10.5 h in the manual follow-up group. Multivariate analysis indicated that the cloud follow-up group had significantly greater follow-up satisfaction (odds ratio: 2.239, 95% CI: 1.237 ~ 5.219). Additionally, the average follow-up duration of the cloud follow-up group decreased by 9.287 h (coefficient: -9.287, 95% CI: -1.439~-0.165). The read rate of health education materials was 72.9% in the cloud follow-up group. CONCLUSIONS: The follow-up effect of the cloud follow-up group was not inferior to that of the manual follow-up group. The cloud follow-up was more effective for prevention and control requirements in the post-epidemic era. Cloud follow-up can save medical resources, improve cost-effectiveness, provide sufficient health education resources for patients, and improve their satisfaction.


Assuntos
Epidemias , Ginecologia , Humanos , Seguimentos , Escolaridade , Educação em Saúde
13.
Cancer Cell ; 42(3): 464-473.e3, 2024 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-38242125

RESUMO

The AJCC/UICC TNM classification describes anatomic extent of tumor progression and guides treatment decisions. Our comprehensive analysis of 8,834 newly diagnosed patients with non-metastatic Epstein-Barr virus related nasopharyngeal carcinoma (NPC) from six Chinese centers indicates certain limitations in the current staging system. The 8th edition of the AJCC/UICC TNM classification inadequately differentiates patient outcomes, particularly between T2 and T3 categories and within the N classification. We propose reclassifying cases of T3 NPC with early skull-base invasion as T2, and elevating N1-N2 cases with grade 3 image-identified extranodal extension (ENE) to N3. Additionally, we suggest combining T2N0 with T1N0 into a single stage IA. For de novo metastatic (M1) NPC, we propose subdivisions of M1a, defined by 1-3 metastatic lesions without liver involvement, and M1b, characterized by >3 metastatic lesions or liver involvement. This proposal better reflects responses of NPC patients to the up-to-date treatments and their evolving risk profiles.


Assuntos
Carcinoma , Infecções por Vírus Epstein-Barr , Neoplasias Nasofaríngeas , Humanos , Carcinoma Nasofaríngeo/patologia , Estadiamento de Neoplasias , Herpesvirus Humano 4 , Prognóstico , Neoplasias Nasofaríngeas/diagnóstico , Neoplasias Nasofaríngeas/patologia , Infecções por Vírus Epstein-Barr/patologia , Carcinoma/patologia , Estudos Retrospectivos
15.
World Neurosurg ; 181: 90-92, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36627020

RESUMO

Both spinal dural arteriovenous fistula (SDAVF) and spinal cavernous malformation (SCM) are uncommon vascular malformations. To our knowledge, such a case of SDAVF concomitant with SCM has not been reported. We encountered a case of a 55-year-old man who had weakness and numbness in both lower extremities. Magnetic resonance imaging showed a round-shape lesion identified as a cavernous malformation in the middle segment of the thoracic spine, with spinal edema and obvious flow voids. Diagnostic angiography revealed an SDAVF fed by the right T7 radicular artery with venous drainage. The intramedullary venous hypertension due to fistula was suspected of inducing the formation of SCM. This case may provide new insight into the pathogenesis of SCM.


Assuntos
Malformações Vasculares do Sistema Nervoso Central , Anormalidades Musculoesqueléticas , Masculino , Humanos , Pessoa de Meia-Idade , Medula Espinal/diagnóstico por imagem , Medula Espinal/cirurgia , Medula Espinal/irrigação sanguínea , Coluna Vertebral , Angiografia , Imageamento por Ressonância Magnética/métodos , Malformações Vasculares do Sistema Nervoso Central/complicações , Malformações Vasculares do Sistema Nervoso Central/diagnóstico por imagem , Malformações Vasculares do Sistema Nervoso Central/cirurgia
17.
Sci China Life Sci ; 67(2): 221-229, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38157107

RESUMO

The exponential growth of bioinformatics tools in recent years has posed challenges for scientists in selecting the most suitable one for their data analysis assignments. Therefore, to aid scientists in making informed choices, a community-based platform that indexes and rates bioinformatics tools is urgently needed. In this study, we introduce BioTreasury ( http://biotreasury.rjmart.cn ), an integrated community-based repository that provides an interactive platform for users and developers to share their experiences in various bioinformatics tools. BioTreasury offers a comprehensive collection of well-indexed bioinformatics software, tools, and databases, totaling over 10,000 entries. In the past two years, we have continuously improved and maintained BioTreasury, adding several exciting features, including creating structured homepages for every tool and user, a hierarchical category of bioinformatics tools and classifying tools using large language model (LLM). BioTreasury streamlines the tool submission process with intelligent auto-completion. Additionally, BioTreasury provides a wide range of social features, for example, enabling users to participate in interactive discussions, rate tools, build and share tool collections for the public. We believe BioTreasury can be a valuable resource and knowledge-sharing platform for the biomedical community. It empowers researchers to effectively discover and evaluate bioinformatics tools, fostering collaboration and advancing bioinformatics research.


Assuntos
Biologia Computacional , Software , Bases de Dados Factuais
18.
Plants (Basel) ; 12(22)2023 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-38005763

RESUMO

The ground cover rice production system (GCRPS) has been proposed as a potential solution to alleviate seasonal drought and early low-temperature stress in hilly mountainous areas; clarifying its impact on crop growth is crucial to enhance rice productivity in these areas. A two-year (2021-2022) field experiment was conducted in the hilly mountains of southwest China to compare the effects of the traditional flooding paddy (Paddy) and GCRPS under three different nitrogen (N) management practices (N1, zero-N fertilizer; N2, 135 kg N ha-1 as a urea-based fertilizer; and N3, 135 kg N ha-1 with a 3:2 base-topdressing ratio as urea fertilizer for the Paddy or a 1:1 basal application ratio as urea and manure for GCRPS) on soil water storage, soil mineral N content and crop growth parameters, including plant height, tiller numbers, the leaf area index (LAI), aboveground dry matter (DM) dynamics and crop yield. The results showed that there was a significant difference in rainfall between the two growth periods, with 906 mm and 291 mm in 2021 and 2022, respectively. While GCRPS did not significantly affect soil water storage, soil mineral N content, and plant height, it led to a reduction in partial tiller numbers (1.1% to 31.6%), LAI (0.6% to 20.4%), DM (4.4% to 18.8%), and crop yield (7.4% to 22.0%) in 2021 (wet year) compared to the Paddy. However, in 2022 (dry year), GCRPS led to an increase in tiller numbers (13.7% to 115.4%), LAI (17.3% to 81.0%), DM (9.0% to 62.6%), and crop yield (2.9% to 9.2%) compared to the Paddy. Structural equation modeling indicated that GCRPS significantly affected tiller numbers, plant height, LAI, DM, and productive tiller numbers, which indirectly influenced crop yield by significantly affecting tiller numbers and productive tiller numbers in 2022. Overall, the effects of GCRPS on soil water and N dynamics were not significant. In 2021, with high rainfall, no drought, and no early, low-temperature stress, the GCRPS suppressed crop growth and reduced yield, while in 2022, with drought and early low-temperature stress and low rainfall, the GCRPS promoted crop growth and increased yield, with tiller numbers and productive tiller numbers being the key factors affecting crop yield.

19.
Biotechnol Prog ; : e3401, 2023 Nov 21.
Artigo em Inglês | MEDLINE | ID: mdl-37987143

RESUMO

Surfactants are commonly used in the therapeutic protein manufacturing process as stabilizer. Polysorbate-20 (PS-20) is one of the most commonly used surfactants to mitigate protein aggregation in the therapeutic protein formulation. It has been observed that polysorbate can be adsorbed by sterile filters during the final filtration process, which poses risk of uneven distribution and potentially reduced polysorbate concentration in final products. In this study, we evaluated the PS-20 adsorption behavior using commonly used sterilizing-grade microfiltration (MF) membranes via a customized filtration set-up. The effect of membrane properties, including the membrane materials, modification, and layer configuration were studied. In addition, the effect of PS-20 concentration was evaluated and the PS-20 adsorption amount by each type of membranes was determined quantitatively and showed good agreement with the in-process adsorption results. Finally, the selection of sterile filters and strategy of pre-flush are discussed for ensuring accurate PS-20 content in the final therapeutic protein drug product.

20.
Stroke Vasc Neurol ; 2023 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-37949480

RESUMO

BACKGROUND: Surgical resection of the lesions remains the main treatment method for most symptomatic spinal cord cavernous malformations (SCCMs) to eliminate the occupation and associated subsequent lifelong haemorrhagic risk. However, the timing of surgical intervention remains controversial, especially for patients in the acute stage after severe haemorrhage. METHODS: Patients diagnosed with SCCMs who were surgically treated between January 2002 and December 2021 were selected and retrospectively reviewed. The Modified McCormick Scale (MMS) was used to evaluate neurological and disability status. All medical information was reviewed, and all patients were followed up for at least 6 months. RESULTS: A total of 279 patients were ultimately included. With regard to long-term outcomes, 110 (39.4%) patients improved, 159 (57.0%) remained unchanged and 10 (3.6%) worsened. For patients with an MMS score of 2-5 on admission, in univariate and multivariate analyses, a ≤6 weeks period between onset and surgery (adjusted OR 3.211, 95% CI 1.504 to 6.856, p=0.003) was a significant predictor of improved MMS. Among 69 patients who first presented with severe haemorrhage, undergoing surgery within 6 weeks of the onset of severe haemorrhage (adjusted OR 4.901, 95% CI 1.126 to 21.325, p=0.034) was significantly associated with improvement of MMS score. CONCLUSION: Surgical timing can influence the long-term outcome of SCCMs. For patients with symptomatic SCCMs, especially those with severe haemorrhage, early surgical intervention within 6 weeks can provide more benefit.

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