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1.
Biomaterials ; 313: 122765, 2025 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-39244824

RESUMEN

Accurate and early detection of atherosclerosis (AS) is imperative for their effective treatment. However, fluorescence probes for efficient diagnosis of AS often encounter insufficient deep tissue penetration, which hinders the reliable assessment of plaque vulnerability. In this work, a reactive oxygen species (ROS) activated near-infrared (NIR) fluorescence and photoacoustic (FL/PA) dual model probe TPA-QO-B is developed by conjugating two chromophores (TPA-QI and O-OH) and ROS-specific group phenylboronic acid ester. The incorporation of ROS-specific group not only induces blue shift in absorbance, but also inhibits the ICT process of TPA-QO-OH, resulting an ignorable initial FL/PA signal. ROS triggers the convertion of TPA-QO-B to TPA-QO-OH, resulting in the concurrent amplification of FL/PA signal. The exceptional selectivity of TPA-QO-B towards ROS makes it effectively distinguish AS mice from the healthy. The NIR emission can achieve a tissue penetration imaging depth of 0.3 cm. Moreover, its PA775 signal possesses the capability to penetrate tissues up to a thickness of 0.8 cm, ensuring deep in vivo imaging of AS model mice in early stage. The ROS-triggered FL/PA dual signal amplification strategy improves the accuracy and addresses the deep tissue penetration problem simultaneously, providing a promising tool for in vivo tracking biomarkers in life science and preclinical applications.


Asunto(s)
Colorantes Fluorescentes , Técnicas Fotoacústicas , Placa Aterosclerótica , Especies Reactivas de Oxígeno , Animales , Especies Reactivas de Oxígeno/metabolismo , Técnicas Fotoacústicas/métodos , Placa Aterosclerótica/diagnóstico por imagen , Placa Aterosclerótica/metabolismo , Colorantes Fluorescentes/química , Ratones , Imagen Óptica/métodos , Ratones Endogámicos C57BL , Humanos , Masculino
2.
Oncol Rep ; 52(5)2024 11.
Artículo en Inglés | MEDLINE | ID: mdl-39364757

RESUMEN

Chemotherapy remains a prevalent treatment for a wide range of tumors; however, the majority of patients undergoing conventional chemotherapy experience varying levels of chemoresistance, ultimately leading to suboptimal outcomes. The present article provided an in­depth review of chemotherapy resistance in tumors, emphasizing the underlying factors contributing to this resistance in tumor cells. It also explored recent advancements in the identification of key molecules and molecular mechanisms within the primary chemoresistant pathways.


Asunto(s)
Antineoplásicos , Resistencia a Antineoplásicos , Neoplasias , Humanos , Neoplasias/tratamiento farmacológico , Neoplasias/patología , Antineoplásicos/uso terapéutico , Antineoplásicos/farmacología , Transducción de Señal/efectos de los fármacos
3.
World J Gastroenterol ; 30(34): 3926-3928, 2024 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-39350788

RESUMEN

Per-oral endoscopic myotomy (POEM) is an innovative minimally invasive technique and has emerged as the preferred modality for treating achalasia and spastic esophageal disorders in numerous specialized centers worldwide. Gastroesophageal reflux (GER) is a common complication following POEM procedures. Recently, an article in the World Journal of Gastroenterology, providing a comprehensive update on post-POEM GER. In this article, the authors present novel insights and strategies that offer valuable implications for endoscopy.


Asunto(s)
Acalasia del Esófago , Reflujo Gastroesofágico , Miotomía , Humanos , Reflujo Gastroesofágico/etiología , Reflujo Gastroesofágico/cirugía , Reflujo Gastroesofágico/diagnóstico , Acalasia del Esófago/cirugía , Acalasia del Esófago/diagnóstico , Miotomía/métodos , Miotomía/efectos adversos , Resultado del Tratamiento , Cirugía Endoscópica por Orificios Naturales/efectos adversos , Cirugía Endoscópica por Orificios Naturales/métodos , Esofagoscopía/efectos adversos , Esofagoscopía/métodos , Complicaciones Posoperatorias/etiología , Esfínter Esofágico Inferior/cirugía , Esfínter Esofágico Inferior/fisiopatología , Esófago/cirugía , Esófago/patología , Esófago/diagnóstico por imagen
4.
Cell Rep ; 43(10): 114800, 2024 Oct 03.
Artículo en Inglés | MEDLINE | ID: mdl-39365703

RESUMEN

Lavender essential oil (LEO) has been shown to relieve pain in humans, but the underlying neural mechanisms remain unknown. Here, we found that inhalation exposure to 0.1% LEO confers antinociceptive effects in mice with complete Freund adjuvant (CFA)-induced inflammatory pain through activation of projections from the anterior piriform cortex (aPir) to the insular cortex (IC). Specifically, in vivo fiber photometry recordings and viral tracing data show that glutamatergic projections from the aPir (aPirGlu) innervate GABAergic neurons in the IC (ICGABA) to inhibit local glutamatergic neurons (ICGlu) that are hyperactivated in inflammatory pain. Optogenetic or chemogenetic activation of this aPirGlu→ICGABA→Glu pathway can recapitulate the antinociceptive effects of LEO inhalation in CFA mice. Conversely, artificial inhibition of IC-projecting aPirGlu neurons abolishes LEO-induced antinociception. Our study thus depicts an LEO-responsive olfactory system circuit mechanism for alleviating inflammatory pain via aPir→IC neural connections, providing evidence to support development of aroma-based treatments for alleviating pain.

5.
ESC Heart Fail ; 2024 Oct 02.
Artículo en Inglés | MEDLINE | ID: mdl-39358863

RESUMEN

BACKGROUND: There is conflicting evidence regarding whether heart failure (HF) increases the risk of developing cancer. OBJECTIVE: This study aimed to assess the association between HF and incident cancer, considering gender differences and HF phenotypes. METHODS: This retrospective study was conducted on data of adult individuals, free of cancer at baseline, from the First Affiliated Hospital of Wenzhou Medical University between January 2009 and February 2023. The patients with HF were categorized as HF with preserved ejection fraction (HFpEF) and HF with reduced ejection fraction (HFrEF). The primary outcome was incident cancer, including obesity-related, tobacco-related, lung, colorectal and breast cancers. RESULTS: Of 33 033 individuals enrolled, 16 722 were diagnosed with HF, including 10 086 (60.3%) with HFpEF and 6636 (39.7%) with HFrEF. During a median follow-up period of 4.6 years (inter-quartile range: 2.6-7.3), incident cancer was diagnosed in 10.5% (1707 patients) of the non-HF group and 15.1% (2533 individuals) of the HF group. After adjusting for potential confounding factors, patients with HF had a 58% increased risk of cancer than those without HF [adjusted hazard ratio (HR) 1.58, 95% confidence interval (CI) 1.48-1.69, P < 0.001]. This risk was consistent across genders (female: adjusted HR 1.95, 95% CI 1.74-2.18, P < 0.001; male: adjusted HR 1.41, 95% CI 1.30-1.54, P < 0.001) and HF phenotypes (HFpEF: adjusted HR 1.69, 95% CI 1.57-1.81, P < 0.001; HFrEF: adjusted HR 1.32, 95% CI 1.20-1.46, P < 0.001). CONCLUSIONS: Both HFpEF and HFrEF are associated with an increased risk of incident cancer. This correlation maintains its validity across genders.

6.
Proc Natl Acad Sci U S A ; 121(41): e2413241121, 2024 Oct 08.
Artículo en Inglés | MEDLINE | ID: mdl-39361652

RESUMEN

Gut microbiota plays a vital role in host metabolism; however, the influence of gut microbes on polyamine metabolism is unknown. Here, we found germ-free models possess elevated polyamine levels in the colon. Mechanistically, intestinal Lactobacillus murinus-derived small RNAs in extracellular vesicles down-regulate host polyamine metabolism by targeting the expression of enzymes in polyamine metabolism. In addition, Lactobacillus murinus delays recovery of dextran sodium sulfate-induced colitis by reducing polyamine levels in mice. Notably, a decline in the abundance of small RNAs was observed in the colon of mice with colorectal cancer (CRC) and human CRC specimens, accompanied by elevated polyamine levels. Collectively, our study identifies a specific underlying mechanism used by intestinal microbiota to modulate host polyamine metabolism, which provides potential intervention for the treatment of polyamine-associated diseases.


Asunto(s)
Colitis , Microbioma Gastrointestinal , Lactobacillus , Poliaminas , Animales , Poliaminas/metabolismo , Ratones , Lactobacillus/metabolismo , Lactobacillus/genética , Humanos , Porcinos , Colitis/metabolismo , Colitis/microbiología , Colitis/inducido químicamente , Neoplasias Colorrectales/metabolismo , Neoplasias Colorrectales/microbiología , Sulfato de Dextran , Colon/metabolismo , Colon/microbiología , Vesículas Extracelulares/metabolismo
7.
Heliyon ; 10(18): e37947, 2024 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-39318802

RESUMEN

Objective: Prolonged length of stay (LOS) increases the economic burden on patients, therefore, optimizing LOS is a critical clinical challenge for physicians. This study aims to examine the correlation between the postoperative LOS and surgery-related adverse events after bullectomy. We defined prolonged postoperative LOS after bullectomy and analyzed the preoperative risk factors linked to prolonged LOS. Methods: In this retrospective study, we analyzed patient data from thoracoscopic bullectomy performed at our hospital between January 2018 and December 2023. The receiver operating characteristic (ROC) curve was used to identify the optimal cut-off values defining prolonged LOS after bullectomy. It was then characterized as prolonged LOS. Patients were divided into prolonged and normal LOS groups based on their postoperative duration. Further, univariate and multivariate logistic regression analyses were performed to identify preoperative risk factors associated with prolonged postoperative LOS after bullectomy. Results: Among the 152 patients analyzed, binary logistic regression revealed a significant effect of surgery-related adverse events after bullectomy on the LOS (P < 0.001). A postoperative LOS exceeding 3 days was considered prolonged. Among the 152 patients, 38.2 % (58/152) experienced a prolonged LOS out of which 20.4 % (31/152) developed surgery-related adverse events. Multivariate regression analysis revealed that preoperative risk factors associated with prolonged LOS included age ≥60 years (OR = 3.052, 95%CI 1.226-7.586, P = 0.016), current smoking status (OR = 2.754, 95%CI 1.482-6.346, P = 0.025), and ASA grade 3 (OR = 4.783, 95%CI 2.356-9.131, P = 0.003). Conclusion: In summary, the postoperative length of stay beyond 3 days after bullectomy was considered prolonged. The preoperative risk factors associated with prolonged postoperative stays after bullectomy included age (over 60), current smoking, and grade 3 ASA. Therefore, quick identification and intervention in patients with these high-risk factors may promote rapid recovery.

8.
Molecules ; 29(17)2024 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-39274999

RESUMEN

Multifunctional thermal regulation materials with good thermal properties, efficient magnetic performance, and satisfactory interface bonding on fabrics are highly desirable for protective fabrics, building winter protection materials, medical thermal regulation materials, and special-environment work clothing. Herein, a new class of magnetic phase-change PW@CaCO3@Fe3O4 microcapsules was successfully produced by controlling the content of magnetic Fe3O4 through a self-assembly method. The microstructure, chemical composition, phase-change behavior, and magnetic properties of the products were sequentially characterized and analyzed. The findings revealed that the obtained microcapsules possessed regular spherical structure with uniform size and excellent thermal properties. Furthermore, PW@CaCO3 with Fe3O4 (i.e., 8% mass fraction) showed the highest thermal regulation and magnetic properties and reached an enthalpy value of 94.25 J·g-1, which is clearly superior to the value of 77.51 J·g-1 for PW@CaCO3 microcapsules. At the same time, the encapsulation efficiency of 38.7% and saturation magnetization of 2.50 emu·g-1 were the best among the four given samples. Therefore, the good paramagnetic feature had a significant synergistic effect on the thermal properties of the PW@CaCO3 microcapsules under study. More importantly, multifunctional fabrics loaded with PW@CaCO3@Fe3O4 microcapsules still showed an enthalpy value of 25.81 J·g-1 after several washes and have the potential to be used widely in the field of temperature control. The thermal regulation fabrics in this study exhibited excellent thermal properties and fastness, which contribute to their practical applications in advancing multifunctional textiles and high-technology modern fabrics.

9.
Brain Res Bull ; 217: 111089, 2024 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-39341510

RESUMEN

Here we assess whether neuropathic pain hypersensitivity is attenuated by spinal administration of the imidazoline I1-receptor agonist LNP599 and whether the attenuation involves co-activation of α2-adrenoceptors. Spared nerve injury (SNI) model of neuropathy was used to induce mechanical hypersensitivity in male and female rats with a chronic catheter for intrathecal drug administrations. Mechanical sensitivity and heat nociception were assessed behaviorally in the injured limb. Additionally, GTPγS radioligand binding assay, ß-arrestin recruitment and intracellular cAMP levels were used for receptor profiling in vitro. LNP599 (imidazoline I1 receptor agonist) and clonidine (α2-adrenoceptor agonist) produced equal dose-related mechanical antihypersensitivity effects in both sexes. LNP599 attenuated heat nociception preferentially in males, while clonidine reduced heat nociception equally in males and females. Carbophenyline (another imidazoline I1 receptor agonist) had no significant effect on mechanical hypersensitivity or heat nociception in males or females. Mechanical antihypersensitivity and heat antinociception induced by LNP599 in SNI males was prevented by pretreatments with yohimbine or atipamezole (two α2-adrenoceptor antagonists) but not by efaroxan (a mixed imidazoline I1 receptor/α2-adrenoceptor antagonist). In vitro assays indicated that LNP599 does not activate α2A- or other subtypes of α2-adrenoceptors. However, LNP599 was a weak partial agonist for 5-HT2B receptors and bound to sigma-1 and sigma-2 receptors that all are involved in modulation of spinal nociception. The results indicate that the suppression of neuropathic pain hypersensitivity by LNP599 is not due to action on spinal imidazoline I1 receptors, but rather due to indirect activation of spinal α2-adrenoceptors.


Asunto(s)
Hiperalgesia , Imidazoles , Receptores de Imidazolina , Neuralgia , Ratas Sprague-Dawley , Receptores Adrenérgicos alfa 2 , Animales , Masculino , Receptores Adrenérgicos alfa 2/metabolismo , Receptores Adrenérgicos alfa 2/efectos de los fármacos , Receptores de Imidazolina/metabolismo , Receptores de Imidazolina/agonistas , Femenino , Hiperalgesia/tratamiento farmacológico , Hiperalgesia/metabolismo , Ratas , Imidazoles/farmacología , Neuralgia/tratamiento farmacológico , Neuralgia/metabolismo , Agonistas de Receptores Adrenérgicos alfa 2/farmacología , Agonistas de Receptores Adrenérgicos alfa 2/administración & dosificación , Clonidina/farmacología , Modelos Animales de Enfermedad , Benzofuranos/farmacología , Inyecciones Espinales , Nocicepción/efectos de los fármacos
11.
Sci Adv ; 10(39): eadp8636, 2024 Sep 27.
Artículo en Inglés | MEDLINE | ID: mdl-39331713

RESUMEN

Alcohol use disorder is highly prevalent worldwide, with characteristically severe pain sensitivity during withdrawal. Here, we established a mouse model of hyperalgesia during ethanol withdrawal (EW) before addiction to investigate the window for onset and underlying mechanisms. Viral tracing with in vivo microendoscopic and two-photon calcium imaging identified a circuit pathway from dorsal hippocampal CA1 glutamatergic neurons (dCA1Glu) to anterior cingulate cortex glutamatergic neurons (ACCGlu) activated in EW mice with hyperalgesia. Chemogenetic inhibition of this pathway can alleviate hyperalgesia in EW mice, whereas artificial activation recapitulates EW-induced hyperalgesia in naïve mice. These findings demonstrate that the dCA1Glu → ACCGlu neuronal pathway participates in driving EW-induced hyperalgesia before ethanol dependence in mice.


Asunto(s)
Etanol , Hiperalgesia , Neuronas , Síndrome de Abstinencia a Sustancias , Animales , Hiperalgesia/etiología , Ratones , Etanol/efectos adversos , Neuronas/metabolismo , Modelos Animales de Enfermedad , Giro del Cíngulo/fisiopatología , Masculino , Alcoholismo/complicaciones , Vías Nerviosas , Ratones Endogámicos C57BL , Región CA1 Hipocampal/metabolismo , Región CA1 Hipocampal/patología , Ácido Glutámico/metabolismo
12.
J Clin Med ; 13(18)2024 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-39336885

RESUMEN

Background/Objectives: This study aims to compare the health-related quality of life (HRQOL) between healthcare providers without chronic diseases and participants with chronic diseases presenting with one of the four different primary diagnoses on the health-related quality of life with six domains (HRQ-6D) scale. Methods: This is a cross-sectional study to compare the HRQOL between healthcare providers without chronic diseases and participants with chronic diseases. Data collection was performed from May 2022 to May 2023. Data for the comparison group were taken from healthcare providers without chronic diseases, and for the participant group with chronic diseases, the data were collected from actual patients with one of four types of primary diagnoses who were recruited from specialist cardiology, oncology, psychiatry, and nephrology clinics. All the participants of this study filled in the HRQ-6D. Results: There were 238 (58.6%) healthcare providers without chronic diseases who participated in this study, as well as 41 (10.1%) patients with end-stage renal disease (ESRD), 48 (11.8%) patients with cancer, and 40 (9.9%) patients who were depressed, and the remaining patients had heart disease. The means (SD) of HRQ-6D scores among healthcare providers without chronic diseases for pain, physical strength, emotion, mobility, self-care, perception of future health, and overall HRQ-6D score were 75.3% (19.8), 74.5% (21.1), 85.6% (18.4%), 93.0% (12.3), 91.6% (13.9), 74.2% (23.3), and 82.4% (13.6), respectively. In comparisons between healthcare providers without chronic diseases and participants with chronic diseases, all mean differences of the overall HRQ-6D score and its domains and dimensions were statistically significant (p < 0.001). Conclusions: The overall score of the HRQ-6D, as well as its domains and dimensions are sensitive in detecting the study participants with chronic diseases from among those without chronic diseases. Therefore, the HRQ-6D is a reliable and valid scale to measure HRQOL. Future studies may use this scale for interventional, observational, and cost-effectiveness studies.

13.
J Am Heart Assoc ; 13(19): e036663, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39291501

RESUMEN

BACKGROUND: Apical hypertrophic cardiomyopathy (ApHCM) is a variant of hypertrophic cardiomyopathy, with distinct clinical characteristics and outcomes. We aimed to clarify the natural history of patients with ApHCM and identify the risk of end-stage heart failure incidence. METHODS AND RESULTS: This retrospective study was conducted on patients with hypertrophic cardiomyopathy in China between January 2009 and February 2024. Patients were stratified into ApHCM and non-ApHCM groups. The primary outcome was a composite of major adverse cardiovascular events, including all-cause deaths, heart failure hospitalization, sudden cardiac death, and ventricular tachycardia. The secondary outcome was the incidence of end-stage heart failure, defined as left ventricular ejection fraction <50%. Kaplan-Meier and univariable and multivariable Cox proportional analyses were applied. Adjustment variables were included for important baseline characteristics, comorbidities, and medication use. Of 5653 patients enrolled with hypertrophic cardiomyopathy, 584 (10.3%) had ApHCM and 5069 (89.7%) had non-ApHCM. During the median follow-up period of 4.6 years (1.6-8.0 years), major adverse cardiovascular events occurred in 32.2% (n=1808), with a lower incidence in patients with ApHCM than non-ApHCM (20.4% versus 33.3%, P<0.001). Non-ApHCM was an independent predictor of major adverse cardiovascular events (hazard ratio [HR], 1.65 [95% CI, 1.36-1.99]; P<0.001). In the serial cohort, patients with ApHCM exhibited a lower incidence of end-stage heart failure than those with non-ApHCM (12.4% versus 2.7%, P<0.001). Non-ApHCM was associated with a higher risk of end-stage heart failure development (HR, 2.31 [95% CI, 1.28-4.15]; P<0.001). In subgroup and sensitivity analysis, the results were consistent for our main and secondary outcomes. CONCLUSIONS: ApHCM is relatively common in hypertrophic cardiomyopathy and shows lower rates of all-cause mortality and heart failure hospitalizations than non-ApHCM.


Asunto(s)
Cardiomiopatía Hipertrófica , Insuficiencia Cardíaca , Humanos , Masculino , Femenino , Cardiomiopatía Hipertrófica/mortalidad , Cardiomiopatía Hipertrófica/complicaciones , Cardiomiopatía Hipertrófica/fisiopatología , Cardiomiopatía Hipertrófica/epidemiología , Cardiomiopatía Hipertrófica/diagnóstico , Cardiomiopatía Hipertrófica/terapia , Persona de Mediana Edad , Estudios Retrospectivos , China/epidemiología , Incidencia , Insuficiencia Cardíaca/epidemiología , Insuficiencia Cardíaca/mortalidad , Insuficiencia Cardíaca/fisiopatología , Insuficiencia Cardíaca/diagnóstico , Anciano , Volumen Sistólico/fisiología , Factores de Riesgo , Función Ventricular Izquierda/fisiología , Adulto , Muerte Súbita Cardíaca/epidemiología , Muerte Súbita Cardíaca/etiología , Pronóstico , Medición de Riesgo , Causas de Muerte
14.
Zhongguo Zhong Yao Za Zhi ; 49(16): 4279-4284, 2024 Aug.
Artículo en Chino | MEDLINE | ID: mdl-39307764

RESUMEN

In 2019, the newly revised Drug Administration Law of the People's Republic of China was issued and implemented,clearly proposing that China should establish a pharmacovigilance system. As a new traditional Chinese medicine(TCM) dosage form created in China, TCM injections have been widely used in clinic, and its pharmacovigilance has attracted much attention. In response to this situation, the project team convened a group of clinical, pharmaceutical and evidence-based medicine experts from all over the country to form an expert group, which formulated the Pharmacovigilance guidelines for clinical application of traditional Chinese medicine injections in strict accordance with the requirements of the group standards of the Chinese Association of Chinese Medicine.From the perspective of clinical application and considering the key elements of pharmacovigilance for clinical application of TCM injections, the guidelines put forward suggestions on the decision making of pharmacovigilance for clinical application of TCM injections from four key links, namely the monitoring and reporting, signal recognition, risk assessment and risk control, according to China's pharmacovigilance regulations and learning from foreign pharmacovigilance guidelines.


Asunto(s)
Medicamentos Herbarios Chinos , Medicina Tradicional China , Farmacovigilancia , Humanos , Medicina Tradicional China/normas , Medicina Tradicional China/efectos adversos , China , Medicamentos Herbarios Chinos/efectos adversos , Medicamentos Herbarios Chinos/normas , Medicamentos Herbarios Chinos/administración & dosificación , Inyecciones
15.
Microbiol Spectr ; : e0108824, 2024 Sep 27.
Artículo en Inglés | MEDLINE | ID: mdl-39329474

RESUMEN

Bacteria within the family Paracoccaceae show promising potential for applications in various fields, garnering significant research attention. Three Gram stain-negative bacteria, strains CPCC 101601T, CPCC 101403T, and CPCC 100767, were isolated from diverse environments: freshwater, rhizosphere soil of Broussonetia papyrifera, and the phycosphere, respectively. Analysis of their 16S rRNA gene sequences, compared with those in the GenBank database, indicated that they belong to the family Paracoccaceae, with nucleotide similarities of 92.5%-99.9% to all of the Paracoccaceae members with valid taxonomic names. Phylogenetic studies based on 16S rRNA gene and whole-genome sequences identified CPCC 101601T as a member of the genus Pseudogemmobacter, CPCC 101403T belonging to the genus Paracoccus, and CPCC 100767 as part of the genus Gemmobacter. Notably, genomic analysis using average nucleotide identity (ANI; <95%) and digital DNA-DNA hybridization (dDDH; <70%) with their closely related strains suggested that CPCC 101601T and CPCC 101403T represent new species within their respective genera. Conversely, CPCC 100767 exhibited high ANI (98.5%) and dDDH (87.4%) values with Gemmobacter fulvus con5T, indicating it belongs to this already recognized species. The in-depth genomic analysis revealed that strains CPCC 101601T, CPCC 101403T, and CPCC 100767 harbor key genes related to the pathways for denitrifying, MA utilization, and polyhydroxyalkanoate biosynthesis. Moreover, genotyping and phenotyping analysis confirmed that strain CPCC 100767 has the ability to convert atmospheric nitrogen into ammonia and produce 5-aminolevulinic acid, whereas CPCC 101601T can only perform the former bioprocess.IMPORTANCEBased on polyphasic taxonomic study, two new species, Pseudogemmobacter lacusdianii and Paracoccus broussonetiae, affiliated with the family Paracoccaceae were identified. This expands our understanding of the family Paracoccaceae and provides new microbial materials for further studies. Modern genomic techniques such as average nucleotide identity and digital DNA-DNA hybridization were utilized to determine species affiliations. These methods offer more precise results than traditional classification mainly based on 16S rRNA gene analysis. Beyond classification of these strains, the research delved into their genomes and discovered key genes related to denitrification, MA utilization, and polyhydroxyalkanoate biosynthesis. The identification of these genes provides a molecular basis for understanding the environmental roles of these strains. Particularly, strain CPCC 100767 demonstrated the ability to convert atmospheric nitrogen into ammonia and produce 5-aminolevulinic acid. These bioprocess capabilities are of significant practical value, such as in agricultural production for use as biofertilizers or biostimulants.

16.
Zhongguo Zhong Yao Za Zhi ; 49(16): 4347-4358, 2024 Aug.
Artículo en Chino | MEDLINE | ID: mdl-39307772

RESUMEN

Bitterness, as one of the most important physiological sensations in animals, is primarily recognized through the mediation of bitter taste receptors. In recent years, it has been found that these receptors are not only expressed in taste bud cells on the tongue but also in the respiratory, cardiovascular, digestive, reproductive, and nervous systems. They are involved in regulating various fundamental physiological processes and are now considered important targets for the treatment of various diseases. This paper reviewed the structure, classification, distribution, and signaling pathways of bitter taste receptors, their relationship with different diseases, and the role of bitter taste receptors agonists, aiming to provide a basis for scientific research on bitter taste receptors.


Asunto(s)
Receptores Acoplados a Proteínas G , Gusto , Humanos , Receptores Acoplados a Proteínas G/metabolismo , Receptores Acoplados a Proteínas G/genética , Animales , Papilas Gustativas/metabolismo , Transducción de Señal
17.
Ann Surg Oncol ; 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39230851

RESUMEN

BACKGROUND: Surgical resection is the primary treatment for gastrointestinal (GI) cancers, but postoperative skeletal muscle loss (SML) is common and linked to poor prognosis. This study aims to identify patterns of muscle change, examine its association with quality of life (QoL), and explore predictors of SML in the first 3 months. PATIENTS AND METHODS: A prospective cohort study was conducted on patients newly diagnosed with GI cancer and undergoing surgery in China between September 2021 and May 2022. Skeletal muscle mass (SMM) and QoL were assessed at admission, 7 days, 1 month, and 3 months post-surgery. Demographic, clinical data, and biomarkers were collected. Missing data were imputed using multiple imputation. Data were analyzed using growth mixture modelling, bivariate analyses, and logistic regression. RESULTS: A total of 483 patients completed baseline assessment. Of the 242 patients with complete muscle assessments, 92% experienced SML. Three distinct patterns of muscle change were identified: 57% had normal preoperative SMM with mild postoperative SML, 16% had low preoperative SMM with moderate SML, and 27% had normal preoperative mass but severe postoperative SML. Moderate/severe SML was associated with more postoperative complications, poorer health, and higher symptom burden. Independent predictors included advanced age, preoperative sarcopenia, advanced cancer stage, and low prognostic nutrition index (PNI ≤ 45). The results did not change when using imputed values. CONCLUSIONS: Although SML is prevalent, patterns of muscle change are heterogeneous among patients. Advanced age, preoperative sarcopenia, advanced cancer stage, and cancer-related inflammation are predictors for moderate/severe SML, highlighting the need for early detection and management.

19.
Arch Environ Occup Health ; 79(3-4): 153-165, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39219509

RESUMEN

This study aimed to explore the isomer-specific, sex-specific, and joint associations of PFAS and red blood cell indices. We used data of 1,238 adults from the Isomers of C8 Health Project in China. Associations of PFAS isomers and red blood cell indices were explored using multiple linear regression models, Bayesian Kernel Machine Regression models and subgroup analysis across sex. We found that serum concentration of linear (n-) and branched (Br-) isomers of perfluorooctane sulfonate (PFOS) and perfluorohexanesulfonic acid (PFHxS) were significantly associated with red blood cell indices in single-pollutant models, with stronger associations observed for n-PFHxS than Br-PFHxS, in women than in men. For instance, the estimated percentage change in hemoglobin concentration for n-PFHxS (3.65%; 95% CI: 2.95%, 4.34%) was larger than that for Br-PFHxS (0.96%; 95% CI: 0.52%, 1.40%). The estimated percentage change in red blood cell count for n-PFHxS in women (2.55%; 95% CI: 1.81%, 3.28%) was significantly higher than that in men (0.12%; 95% CI: -1.04%, 1.29%) (Pinter < 0.001). Similarly, sex-specific positive association of PFAS mixture and outcomes was observed. Therefore, the structure, susceptive population, and joint effect of PFAS isomers should be taken into consideration when evaluating the health risk of chemicals.


Asunto(s)
Ácidos Alcanesulfónicos , Contaminantes Ambientales , Índices de Eritrocitos , Fluorocarburos , Humanos , Femenino , Masculino , China , Fluorocarburos/sangre , Ácidos Alcanesulfónicos/sangre , Adulto , Persona de Mediana Edad , Contaminantes Ambientales/sangre , Isomerismo , Ácidos Sulfónicos/sangre , Exposición a Riesgos Ambientales/análisis , Factores Sexuales
20.
Mol Pharm ; 2024 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-39288012

RESUMEN

Biopharmaceutical resins are pivotal inert matrices used across industry and academia, playing crucial roles in a myriad of applications. For biopharmaceutical process research and development applications, a deep understanding of the physical and chemical properties of the resin itself is frequently required, including for drug purification, drug delivery, and immobilized biocatalysis. Nevertheless, the prevailing methodologies currently employed for elucidating these important aspects of biopharmaceutical resins are often lacking, frequently require significant sample alteration, are destructive or ionizing in nature, and may not adequately provide representative information. In this work, we propose the use of unsupervised machine learning technologies, in the form of both non-negative matrix factorization (NMF) and k-means segmentation, in conjugation with Raman hyperspectral imaging to rapidly elucidate the molecular and spatial properties of biopharmaceutical resins. Leveraging our proposed technology, we offer a new approach to comprehensively understanding important resin-based systems for application across biopharmaceuticals and beyond. Specifically, focusing herein on a representative resin widely utilized across the industry (i.e., Immobead 150P), our findings showcase the ability of our machine learning-based technology to molecularly identify and spatially resolve all chemical species present. Further, we offer a comprehensive evaluation of optimal excitation for hyperspectral imaging data collection, demonstrating results across 532, 638, and 785 nm excitation. In all cases, our proposed technology deconvoluted, both spatially and spectrally, resin and glass substrates via NMF. After NMF deconvolution, image segmentation was also successfully accomplished in all data sets via k-means clustering. To the best of our knowledge, this is the first report utilizing the combination of two unsupervised machine learning methodologies, combining NMF and k-means, for the rapid deconvolution and segmentation of biopharmaceutical resins. As such, we offer a powerful new data-rich experimentation tool for application across multidisciplinary fields for a deeper understanding of resins.

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