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Timely and facile monitoring of Mycobacterium tuberculosis (M. tuberculosis) plays an important role for preventing and controlling tuberculosis infection. Mycobacterium smegmatis (M. smegmatis) has long been employed as a safe surrogate for the investigation of M. tuberculosis. In this work, an aqueous soluble tail protein derived from our previously isolated mycobacteriophage was prepared with a recombinant expression technique and noted as GP89, which shows noticeable binding capacity to Mycobacterium genus. GP89 was sprayed as a capture agent onto a nitrocellulose membrane for forming the test line of a lateral flow assay (LFA) strip. Moreover, an aptamer binding M. tuberculosis and M. smegmatis was labeled with fluorescent microspheres to act as the signal tracer of the LFA method. With the GP89 based LFA, M. tuberculosis and M. smegmatis can be detected with the aid of a handheld UV flashlight or a portable fluorescent strip reader within 10 min. The concentration range for quantitating M. tuberculosis and M. smegmatis are both 1.0 × 102 CFU mL-1 - 1.0 × 106 CFU mL-1, and the detection limits for the two mycobacteria are 2.0 and 24 CFU mL-1 (S/N = 3), respectively. The test strip was applied to detect M. tuberculosis and M. smegmatis in different samples such as physiological salt solution, urine, and saliva. This study offers a promising screening tool for diagnosing M. tuberculosis infection in resource-limited institutes.
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Costly third-party punishment (TPP) is an effective way to enforce fairness norms and promote cooperation. Recent studies have shown that the third party considers not only the proposer's suggested allocation but also the receiver's response to the allocation, which was typically ignored in traditional TPP studies when making punishment decisions. However, it remains unclear whether and how the varying unfair allocations and receivers' responses are integrated into third-party punishment. The current study addressed these issues at behavioral and electrophysiological levels by employing a modified third-party punishment task involving proposers' highly or moderately unfair allocations and the receivers' acceptance or rejection responses. At the behavioral level, participants punished proposers more often when receivers rejected relative to accepted unfair allocations. This effect was further modulated by the unfairness degree of allocations, indicated by a more pronounced rejection-sensitive effect when participants observed the moderately unfair offers. Electrophysiologically, when the receiver rejected the moderately unfair allocations, a stronger late-stage component P300/LPP, which was considered to be involved in allocations of attention resources, was found. Meanwhile, separated from the P300/LPP, the P200 associated with early attention capture demonstrated a rejection-sensitive effect. Together, in the costly TPP studies, the receiver is typically designated as passive and silent, and her/his responses to unfairness are conventionally ignored. However, our results indicate that except for the proposer's distribution behavior, the receiver's response does have an impact on third-party punishment in a way that interacts with the unfairness of allocations.
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Punição , Humanos , Masculino , Feminino , Adulto Jovem , Adulto , Eletroencefalografia/métodos , Tomada de Decisões/fisiologia , Potenciais Evocados/fisiologia , Comportamento Cooperativo , Encéfalo/fisiologia , Atenção/fisiologiaRESUMO
BACKGROUND: The prevalence of genetic mutations in thyroid cancer varies significantly among different ethnic backgrounds. The present study aimed to investigate the clinical potential of BRAF V600E in a large group of homogenous Han Chinese patients. METHODS: From 2018 to 2021, 6232 thyroid disease patients who underwent thyroidectomy at our hospital were enrolled. We measured the diagnostic value of BRAF and plotted ROC curves. Patients with full clinical-pathological data were selected and divided into the BRAF mutation and wild type groups. We conducted univariate and multivariate analyses to quantify the differences in potential predictive factors of papillary thyroid carcinoma (PTC) patients between the groups. Kaplan-Meier survival analysis was used to estimate overall recurrence and recurrence rate. RESULTS: The prevalence of BRAF V600E mutation was 86.0% in PTCs. The sensitivity and specificity of BRAF mutation for diagnosing PTC from suspicious lesions were 85.5% and 100%, respectively. The sensitivity and specificity of BRAF analysis in the indeterminate cytology group were 72.5% and 100%, respectively. BRAF mutation showed an independent association with older age, negative HT, larger tumor size, extrathyroidal extension, and multifocality in PTCs. In micro-PTCs (tumor size ≤ 1), the mutation was also positively correlated with progressive phenotypes of extrathyroidal extension and multifocality. BRAF mutation was associated with poorer recurrence-free probability in Kaplan-Meier survival analysis. CONCLUSIONS: This large single-center study reveals that BRAF V600E is highly prevalent in the Han Chinese population and demonstrates BRAF V600E mutation testing has high diagnostic accuracy and its strong association with the progress of aggressiveness in PTCs and a higher probability of recurrence. BRAF mutation can serve as an accurate marker for diagnosis and decision-making with great value.
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Mutação , Recidiva Local de Neoplasia , Proteínas Proto-Oncogênicas B-raf , Neoplasias da Glândula Tireoide , Tireoidectomia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Biomarcadores Tumorais/genética , China/epidemiologia , População do Leste Asiático/genética , Seguimentos , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/epidemiologia , Prognóstico , Proteínas Proto-Oncogênicas B-raf/genética , Estudos Retrospectivos , Taxa de Sobrevida , Câncer Papilífero da Tireoide/genética , Câncer Papilífero da Tireoide/patologia , Câncer Papilífero da Tireoide/cirurgia , Neoplasias da Glândula Tireoide/genética , Neoplasias da Glândula Tireoide/patologia , Neoplasias da Glândula Tireoide/cirurgiaRESUMO
Objective: To determine the comparative effects and safety of traditional Chinese medicine (TCM) interventions based on meridian theory for pain relief in patients with primary dysmenorrhea (PD). Methods: This is a systematic review with network meta-analysis. Randomized controlled trials (RCTs) comparing meridian-based TCM interventions with waitlist, placebo, western medicine, and conventional therapies for PD pain. A SUCRA was used to estimate the probability ranking for the effects of interventions. Results: 57 RCTs involving 3,903 participants and 15interventions were included. Thirty-two RCTs were rated as low risk of bias. A network diagram was drawn with 105 pairs of comparisons. Compared with NSAIDs and waitlist, significantly better effects were found in acupressure [SMD = -1.51, 95%CI (-2.91, -0.12)/SMD = -2.31, 95%CI (-4.61, -0.02)], warm needling [SMD = -1.43, 95%CI (-2.68, -0.18)/SMD = -2.23, 95%CI (-4.43, -0.03)], moxibustion [SMD = -1.21, 95%CI (-1.85, -0.57)/SMD = -2.10, 95%CI (-3.95, -0.07)], and acupuncture [SMD = -1.09, 95%CI (-1.62, -0.55)/SMD = -1.89, 95%CI (-3.67, -0.11)]. No adverse events were detected. Conclusion: For PD pain, the effects of acupressure, acupuncture, warm needling, and moxibustion were superior to those of NSAIDs and waitlist. Oral contraceptive pill, electro-acupuncture, acupressure, and warm needling demonstrated higher probabilities of being better interventions. More high-quality clinical trials are needed to provide more robust evidence of this network. Systematic review registration: PROSPERO CRD42022373312.
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Despite many luminescent advantages including outstanding absorption coefficient and high quantum yield, pyrene and its derivatives have been suffering from a dramatic aggregation-caused quenching (ACQ) effect. Although the dramatic ACQ effect of pyrene-based fluorophores has been restrained in pyrene-doped metal-organic frameworks (MOFs), the low loading of fluorescent (FL) units substantially impedes the improved luminescent behaviors. Herein, pyrene-based MOFs hydrogel was synthesized with a high loading of pyrene as the unique organic linker blocks instead of a dopant in MOFs. The gel matrix contributed to rigidifying the location of the FL emitters and achieving intensive FL emission and high luminescent stability and therefore efficiently overcoming the ACQ effect. Furthermore, the protonation of pyrene in the MOFs hydrogel remarkably decreased the luminescent intensity, which endowed the FL hydrogel with highly pH-responsive activity in the broad range (pH 4-10). Interestingly, glucose oxidase was immobilized into ZIF-8 as a highly efficient luminescent quencher, which contributed to catalyzing the form of gluconic acid and thus drastically quenching the FL signal of the MOFs hydrogel. Furthermore, the emitter-quencher pair of pyrene-based MOFs hydrogel and glucose oxidase was successfully employed to develop an ultrasensitive FL immunoassay platform for cardiac troponin I (as a model analyte). The limit of detection for cardiac troponin I was 5.2 pg/mL (3σ). The proof-of-principle study demonstrated the thrilling auxiliary effect of tailorable MOFs hydrogel on boosting the feasibility of aqueous insoluble FL chromophores for trace analysis.
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Hidrogéis , Estruturas Metalorgânicas , Pirenos , Troponina I , Pirenos/química , Estruturas Metalorgânicas/química , Troponina I/análise , Troponina I/sangue , Concentração de Íons de Hidrogênio , Humanos , Hidrogéis/química , Imunoensaio/métodos , Corantes Fluorescentes/química , FluorescênciaRESUMO
INTRODUCTION: A meta-analysis was conducted on the perioperative and oncological outcomes of robot-assisted and laparoscopic lateral lymph node dissection in rectal cancer. There are few articles and reports on this topic, and a lack of high-quality research results in unreliable research conclusions. This study includes prospective and retrospective studies to obtain more reliable findings. MATERIALS AND METHODS: Databases were searched, including PubMed, EMBASE, Cochrane, and Web of Science. The search was conducted from the time of database construction to March 2024. The quality of the literature was evaluated using the NOS scoring system. Meta-analysis was performed using R language software. Statistical heterogeneity was assessed using the I2 statistic, and sensitivity analysis was performed. RESULTS: Six relevant literatures that met the criteria were finally included, and 652 patients were included, including 316 (48.5%) in the robot-assisted lateral lymph node dissection for rectal cancer group (RLLND) and 336 (51.5%) in the laparoscopic lateral lymph node dissection for rectal cancer group (LLLND). Analysis of the results showed that compared with the laparoscopic group, the robotic group had less mean intraoperative blood loss (MD = - 22, 95% CI - 40.03 to - 3.97, P < 0.05), longer operative time (MD = 51.57, 95%CI 7.69 to 95.45, P < 0.05), and a shorter mean hospital stay (MD = - 1.25, 95%CI - 2.46 to - 0.05, P < 0.05), a low rate of urinary complications (OR 0.39, 95%CI 0.23 to 0.64, P < 0.01), a low overall rate of postoperative complications (OR 0.6, 95%CI 0.42 to 0.87, P < 0.01), and a high number of lateral lymph node dissection (MD = 1.18, 95% CI 0.14 to 2.23, P < 0.05), and there was no statistically significant difference between the two groups in terms of postoperative anastomotic leakage, postoperative intestinal obstruction, and total number of lymph nodes obtained (P > 0.05). CONCLUSION: Compared with laparoscopy, robotic lateral lymph node dissection for rectal cancer reduces intraoperative blood loss, shortens the average length of hospital stay, reduces urologic complications, decreases overall postoperative complications, and collects more lateral lymph nodes. However, the surgical time is prolonged.
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Laparoscopia , Excisão de Linfonodo , Neoplasias Retais , Procedimentos Cirúrgicos Robóticos , Humanos , Neoplasias Retais/cirurgia , Neoplasias Retais/patologia , Excisão de Linfonodo/métodos , Procedimentos Cirúrgicos Robóticos/métodos , Laparoscopia/métodos , Laparoscopia/efeitos adversos , Duração da Cirurgia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Perda Sanguínea Cirúrgica/estatística & dados numéricos , Resultado do Tratamento , Tempo de Internação/estatística & dados numéricosRESUMO
Infection control measures to prevent viral and bacterial infection spread are critical to maintaining a healthy environment. Pathogens such as viruses and pyogenic bacteria can cause infectious complications. Viruses such as SARS-CoV-2 are known to spread through the aerosol route and on fomite surfaces, lasting for a prolonged time in the environment. Developing technologies to mitigate the spread of pathogens through airborne routes and on surfaces is critical, especially for patients at high risk for infectious complications. Multifunctional coatings with a broad capacity to bind pathogens that result in inactivation can disrupt infectious spread through aerosol and inanimate surface spread. This study uses C-POLAR, a proprietary cationic, polyamine, organic polymer with a charged, dielectric property coated onto air filtration material and textiles. Using both SARS-CoV-2 live viral particles and bovine coronavirus models, C-POLAR-treated material shows a dramatic 2-log reduction in circulating viral inoculum. This reduction is consistent in a static room model, indicating simple airflow through a static C-POLAR hanging can capture significant airborne particles. Finally, Gram-positive and Gram-negative bacteria are applied to C-POLAR textiles using a viability indicator to demonstrate eradication on fomite surfaces. These data suggest that a cationic polymer surface can capture and eradicate human pathogens, potentially interrupting the infectious spread for a more resilient environment. IMPORTANCE: Infection control is critical for maintaining a healthy home, work, and hospital environment. We test a cationic polymer capable of capturing and eradicating viral and bacterial pathogens by applying the polymer to the air filtration material and textiles. The data suggest that the simple addition of cationic material can result in the improvement of an infectious resilient environment against viral and bacterial pathogens.
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COVID-19 , Cátions , Polímeros , SARS-CoV-2 , SARS-CoV-2/efeitos dos fármacos , Polímeros/farmacologia , Polímeros/química , Humanos , Animais , COVID-19/prevenção & controle , Cátions/química , Cátions/farmacologia , Bovinos , Têxteis/microbiologia , Têxteis/virologia , Coronavirus Bovino/efeitos dos fármacos , Fômites/microbiologia , Fômites/virologia , Bactérias/efeitos dos fármacos , Bactérias/crescimento & desenvolvimento , Aerossóis , Bactérias Gram-Negativas/efeitos dos fármacosRESUMO
Multimodal immunochromatographic sensors (ICSs) have acquired extensive attention since they not only provide reliable results by comparing the different output signals but also flexibly respond to various application environments. Herein, an ICS with triple signal outputs including colorimetry, temperature, and pressure was developed for sensitive detection of chlorothalonil. The multivalent Pt/Ti3C2Tx nanoparticles as signal tags were facilely synthesized by loading PtNPs onto single-layer Ti3C2Tx nanosheets with high surface area. The acquired Pt/Ti3C2TxNPs accelerated the rate-limiting step of the aerogenesis reaction of H2O2 for producing intensive pressure signals due to their significant catalase-mimic activity. Meanwhile, they showed desirable photothermal conversion efficiency in the near-infrared region for producing significant temperature signals. Furthermore, their deep color also allowed facile colorimetry by using the naked eye. Based on a competitive immunoassay, chlorothalonil was detected as a model analyte on this trimodal ICS platform. The detection limits for pressure, temperature, and colorimetric modes were 0.04, 0.09, and 5 ng mL-1, respectively. The recoveries for detecting chlorothalonil supplemented in Astragalus and Honeysuckle with pressure mode were 84.0-110% and 108-114%, respectively. Therefore, the ICS presented a portable, sensitive, accurate, and flexible multimodal strategy suitable for point-of-care testing.
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Colorimetria , Nanocompostos , Nitrilas , Platina , Temperatura , Nanocompostos/química , Platina/química , Imunoensaio/métodos , Nitrilas/química , Pressão , Titânio/química , Limite de DetecçãoRESUMO
Serious adverse drug reactions of gentamicin (GM) significantly limit its clinical use, thus there is an urgent demand to develop reliable strategies to detect its concentration. In this study, we have developed a novel highly sensitive and portable lateral flow immunoassay (LFIA) based on CoFe PBAs/WS2 nanozyme mediated chemiluminescence (CL) and photothermal (PT) dual-mode POCT biosensor for the detection of GM, which successfully combines sensitive laboratory analyses with portable in situ analyses in the field. In this proof-of-principle work, the dynamic detection ranges of CL-LFIA and PT-LFIA mode were 1 pg mL-1 to 100 ng mL-1 and 50 pg mL-1 to 100 ng mL-1 with the limits of detection of 0.33 and 16.67 pg mL-1, respectively. The whole detection of CL-LFIA and PT-LFIA could be completed within 15 min and 30 min, respectively. The recoveries of GM spiked into complex matrices including milk, urine, and serum for CL-LFIA and PT-LFIA were 90.94%-109.74% and 94.49%-109.31%, respectively, indicating the reliability and applicability of the dual-mode LFIA in real samples. The dual-mode POCT biosensor could effectively overcome the false problems with improving accuracy and sensitivity, enabling user to precisely detect GM by laboratory analysis or on-site analysis depending on the source condition. Due to the complementary properties of CL-LFIA and PT-LFIA, the developed POCT biosensor can effectively ensure high-performance detection, showing the potential application of accurately detecting drug concentration in clinical practice.
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Técnicas Biossensoriais , Gentamicinas , Limite de Detecção , Medições Luminescentes , Testes Imediatos , Gentamicinas/análise , Gentamicinas/sangue , Técnicas Biossensoriais/métodos , Imunoensaio/métodos , Medições Luminescentes/métodos , Humanos , Animais , Antibacterianos/análise , Antibacterianos/sangue , Antibacterianos/urina , Leite/química , Cobalto/químicaRESUMO
In traditional Chinese medicinal practices, Gegen (GG) and Tianma (TM) are widely utilized for headache relief, but their material basis has not been comprehensively characterized. This research utilized ultra performance liquid chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS) for precise determination of Gegen-Tianma's (GGTM) material composition, and employed desorption electrospray ionization-mass spectrometry imaging (DESI-MSI) to pinpoint the brain-absorbed components and various metabolites post oral administration to rats. A total of 80 chemical constituents were identified from GGTM, 11 prototypes and 18 metabolites were identified from plasma. The brain tissue was identified in total 4 prototypes and 5 metabolites, these constituents were basically located in the prefrontal cortex and thalamus. The absorption patterns of components in the rat brain aligned with the varied distribution of metabolites within the brain. This study provides a solid theoretical basis for in-depth exploration of potential drug targets and elucidation of the specific mechanism of action of GGTM in the treatment of migraine.
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Encéfalo , Medicamentos de Ervas Chinesas , Ratos Sprague-Dawley , Espectrometria de Massas por Ionização por Electrospray , Animais , Medicamentos de Ervas Chinesas/farmacocinética , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/análise , Ratos , Cromatografia Líquida de Alta Pressão/métodos , Masculino , Encéfalo/metabolismo , Espectrometria de Massas por Ionização por Electrospray/métodos , Administração Oral , Córtex Pré-Frontal/metabolismo , Distribuição TecidualRESUMO
Ainsliaea fragrans Champ, a strong heat-clearing and detoxifying traditional Chinese medicine, has been effectively used for treating chronic cervicitis, endometritis, pelvic inflammatory diseases, and other conditions caused by damp heat. It shows a good effect in the treatment of cervicitis and has broad clinical application prospects. Nevertheless, there is no comprehensive study on its in vivo and in vitro chemical analysis. UHPLC-QTOF-MS/MS combined with the non-targeted characteristic filter analysis were used to conjecture and characterize the chemical components and in vivo metabolites of rats following oral administration of Ainsliaea fragrans Champ. In this study, A total of 85 compounds were identified in Ainsliaea fragrans Champ, including 29 flavonoids, 14 sesquiterpenoids, 25 chlorogenic acids, and 17 other compounds. In the plasma of rats after administration of Ainsliaea fragrans Champ, 160 compounds were deduced (19 prototype compounds and 141 metabolites). The 141 metabolites consist of 50 flavonoids, 80 phenolic acids and 11 Chlorogenic acids. The related metabolic pathways mainly involved demethylation, reduction, sulfonation, decarboxylation, hydroxylation, methylation, and glucuronide conjunction. In summary, the chemical components and metabolites of Ainsliaea fragrans Champ were comprehensively identified by using a rapid and accurate analysis method, which laid a foundation for dissecting its bioactive substances. In addition, it provides a scientific basis for the in-depth study of the material basis of Ainsliaea fragrans Champ efficacy and theoretical support for illustrating the mechanism of medical action and its clinical application.
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Medicamentos de Ervas Chinesas , Flavonoides , Ratos Sprague-Dawley , Espectrometria de Massas em Tandem , Animais , Cromatografia Líquida de Alta Pressão/métodos , Espectrometria de Massas em Tandem/métodos , Ratos , Medicamentos de Ervas Chinesas/administração & dosagem , Medicamentos de Ervas Chinesas/metabolismo , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacocinética , Administração Oral , Flavonoides/sangue , Flavonoides/química , Feminino , Ácido Clorogênico/sangue , Ácido Clorogênico/química , Ácido Clorogênico/administração & dosagem , Ácido Clorogênico/metabolismo , Asteraceae/química , Hidroxibenzoatos/sangue , Hidroxibenzoatos/análise , Hidroxibenzoatos/metabolismoRESUMO
Importance: Choledocholithiasis, or bile duct gallstones, is effectively treated with surgery, which does not prevent relapse. A common adjuvant therapy is the stimulation of the Yanglingquan point (GB34). Acupoint catgut embedding (ACE), an acupoint stimulation therapy, may be a better treatment for choledocholithiasis. Objectives: To investigate the effect of ACE in stimulating GB34 on bile metabolism and its possible mechanism via metabonomics. Methods: In this study, we used ultrahigh performance liquid chromatographyquadrupole time-of-flight mass spectrometry (UHPLC-MS/MS) to analyze the changes in bile metabolites, metabolic pathways, and liver function indicators in 16 patients with choledocholithiasis before and after ACE stimulation. Results: We identified 10 metabolites that exhibited significant differences in the bile before and after ACE, six of which significantly increased and four that significantly decreased. Moreover, six liver function indicators showed a downward trend. We identified related metabolic pathways as glycerophospholipid metabolism, steroid biosynthesis, and the citrate cycle (TCA cycle). Conclusions and Relevance: This study shows that ACE stimulation of GB34 can effectively help treat choledocholithiasis, which may be clinically applicable to ACE.
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Pontos de Acupuntura , Bile , Categute , Coledocolitíase , Humanos , Coledocolitíase/cirurgia , Coledocolitíase/metabolismo , Coledocolitíase/terapia , Masculino , Feminino , Pessoa de Meia-Idade , Bile/metabolismo , Bile/química , Adulto , Terapia por Acupuntura/métodos , IdosoRESUMO
BACKGROUND Spinal cord arteriovenous fistula that only manifests as lower back pain is easily misdiagnosed as myofasciitis, lumbar spondylosis, and other diseases, and incorrect treatment such as glucocorticoid blockade might be given, leading to worsening of the condition. CASE REPORT We analyze the clinical characteristics of a patient with spinal dural arteriovenous fistula who presented with chronic-onset low back pain. A patient with spinal dural arteriovenous fistula presented with chronic-onset low back pain as the only symptom, and was misdiagnosed as having myofasciitis. We assessed the paraclinical data, clinical reasoning, and course of treatment. The patient was an elderly man with low back pain for 1 year. He was diagnosed with myofasciitis in a local hospital and received local blocking treatment using glucocorticoid, and left lower-limb weakness appeared after that. After he was admitted to our hospital, enhanced thoracic and lumbar magnetic resonance imaging and selective spinal angiography were performed, and the results indicated the diagnosis of spinal dural arteriovenous fistula. After surgical treatment, the low back pain and lower-limb weakness were alleviated, and the patient is still under follow-up. CONCLUSIONS The possibility of spinal dural arteriovenous fistula should not be overlooked among patients with chronic low back pain, and caution should be taken when using glucocorticoids for treatment of chronic low back pain.
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Malformações Vasculares do Sistema Nervoso Central , Dor Lombar , Humanos , Masculino , Dor Lombar/etiologia , Malformações Vasculares do Sistema Nervoso Central/complicações , Malformações Vasculares do Sistema Nervoso Central/terapia , Malformações Vasculares do Sistema Nervoso Central/diagnóstico , Idoso , Imageamento por Ressonância Magnética , Diagnóstico DiferencialRESUMO
The study investigated the lipid oxidation of pumpkin seed kernels (PSK) under different storage conditions (room temperature, vacuum-room temperature, refrigeration, and vacuum-refrigeration) using HPLC-MS and GC-MS. Experimental results found the vacuum-refrigeration group showed the lowest PV (0.24 g/100 g), diene (8.68), hexanal (356.64 ± 16.06 ng/g), and nonanal (132.05 ± 8.38 ng/g) after a 9-month storage. A total of 586 lipids, including 6 classes and 27 subclasses, were detected, 46 of which showed significant differences. Refrigeration samples had the highest diacylglycerol content, while room temperature samples demonstrated the highest triacylglycerol and phosphatidylcholine content. Differential lipid metabolite analyses indicated that storage conditions mainly affected glycerolipid metabolism, glycerophospholipid metabolism, and sphingolipid metabolism pathways in PSK, while glycerolipid and glycerophospholipid metabolism were still dominant. It revealed that refrigeration was more effective than vacuum in inhibiting the oxidation of PSK. These findings could offer valuable references for the storage, transportation, preservation, and the development and utilization of PSK.
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Cucurbita , Armazenamento de Alimentos , Lipidômica , Oxirredução , Sementes , Cucurbita/química , Cucurbita/metabolismo , Sementes/química , Sementes/metabolismo , Lipídeos/química , Lipídeos/análise , Cromatografia Gasosa-Espectrometria de Massas , Metabolismo dos Lipídeos , Cromatografia Líquida de Alta PressãoRESUMO
In this study, the collision induced dissociation tandem mass spectrometry (CID-MS/MS) fragmentation pathway of chemical components in rhubarb was wholly explored using 34 standards by UHPLC-QTOF-MS/MS in negative ion mode. In consequently, the diagnostic product ions for speedy screening and categorization of chemical components in rhubarb were ascertained based on their MS/MS splitting decomposition patterns and intensity analysis. According to these findings, a fresh two-step data mining strategy had set up. The initial key step involves the use of characteristic product ions and neutral loss to screen for different types of substituents and basic skeletons of compounds. The subsequent key step is to screen and classify different types of compounds based on their characteristic product ions. This method can be utilized for rapid research, classification, and identification of compounds in rhubarb. A total of 356 compounds were rapidly identified or tentatively characterized in three rhubarb species extracts, including 150 acylglucoside, 125 anthraquinone, 65 flavanols and 15 other compounds. This study manifests that the analytical strategy is feasible for the analysis of complex natural products in rhubarb.
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Antraquinonas , Rheum , Espectrometria de Massas em Tandem , Cromatografia Líquida de Alta Pressão/métodos , Rheum/química , Espectrometria de Massas em Tandem/métodos , Antraquinonas/química , Antraquinonas/análise , Extratos Vegetais/química , Extratos Vegetais/análise , Glucosídeos/análise , Glucosídeos/químicaRESUMO
Background: Sex-based differences are known to be a significant feature of chronic stress; however, the morphological mechanisms of the brain underlying these differences remain unclear. The present study aimed to use magnetic resonance imaging (MRI) and voxel-based morphometry (VBM) to investigate the effects of sex on gray matter volume (GMV) changes under conditions of chronic stress. Methods: A total of 32 subjects were included for analysis in the present study: 16 participants experiencing chronic stress and 16 healthy controls. T1-weighted (T1WI) images from a 3 T MRI scanner were extracted from the OpenfMRI database. Images were segmented into gray matter using VBM analysis. A two-way analysis of variance (ANOVA) with a 2 × 2 full factorial design was used to evaluate the main and interaction effects of chronic stress and sex on GMV changes, and then post hoc testing was used to verify each simple effect. Results: Two-way ANOVA showed a chronic stress × sex interaction effect on GMV. Simple effects analysis indicated that the GMV of the bilateral pre- and post-central gyri, the right cuneus and superior occipital gyrus was decreased in males, whereas that of the bilateral pre- and post-central gyri, the right superior occipital gyrus and the left middle frontal gyrus and orbital middle frontal gyrus was increased in females, under chronic stress. Additionally, in the control group, the GMV of the bilateral pre- and post-central gyri, the right cuneus and superior occipital gyrus was greater in males than females. While in the chronic stress group, the above sex-based differences were no longer significant. Conclusions: This study preliminarily shows that there are significant differences in gray matter volume changes between males and females under chronic stress. These findings provide a basis for future studies investigating the volumetric mechanisms of sex differences under chronic stress.
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Posttraumatic stress disorder (PTSD) recently becomes one of the most important mental health concerns. However, no previous study has comprehensively reviewed the application of big data and machine learning (ML) techniques in PTSD. We found 873 studies meet the inclusion criteria and a total of 31 of those in a sample of 210,001 were included in quantitative analysis. ML algorithms were able to discriminate PTSD with an overall accuracy of 0.89. Pooled estimates of classification accuracy from multi-dimensional data (0.96) are higher than single data types (0.86 to 0.90). ML techniques can effectively classify PTSD and models using multi-dimensional data perform better than those using single data types. While selecting optimal combinations of data types and ML algorithms to be clinically applied at the individual level still remains a big challenge, these findings provide insights into the classification, identification, diagnosis and treatment of PTSD.
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This study aims to explore the potential metabolic pathways and targets of Puerariae Thomsonii Radix in the clinical treatment of mild dyslipidemia. UPLC-Q-TOF-MS and EASY-nLC-timsTOF-Pro2 were employed to perform metabolomic and proteomic analyses of the plasma samples collected from the patients with mild dyslipidemia at baseline and after 12 weeks of treatment with Puerariae Thomsonii Radix. The multivariate statistical analysis was carried out for comparison between groups, and the correlation analysis was performed for the metabolites and proteins closely related to mild dyslipidemia with the blood lipid indexes. The possible pathways and targets for mitigating mild dyslipidemia were screened out by the Gene Ontology(GO) and Kyoto Encyclopedia of Genes and Genomes(KEGG) enrichment analysis. The results showed that 56 differential metabolites and 78 differential proteins in the plasma of patients were associated with Puerariae Thomsonii Radix treatment. In addition, changes were detected for the proteins or metabolites(ApoB-100, 9,10-DHOME, GAPDH, PGK1, PGAM1, ENO1, etc.) involved in lipoprotein, lipid, and glucose metabolism and the proteins or metabolites(oxidized phospholipid, PLA2G7, LTA4H, etc.) related to inflammation and oxidative stress. Puerariae Thomsonii Radix may down-regulate the overexpression of ApoB-100, activate the peroxisome proliferator-activated receptor α/γ(PPARα/γ), promote the catabolism of fat and glycerol, and alleviate the oxidative stress mediated by oxidized phospholipids and leukotriene B4(LTB4) in the treatment of mild dyslipidemia.
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Medicamentos de Ervas Chinesas , Dislipidemias , Metabolômica , Proteômica , Pueraria , Humanos , Dislipidemias/tratamento farmacológico , Dislipidemias/genética , Dislipidemias/metabolismo , Medicamentos de Ervas Chinesas/administração & dosagem , Medicamentos de Ervas Chinesas/farmacologia , Pueraria/química , Masculino , Feminino , Pessoa de Meia-Idade , AdultoRESUMO
Sediment re-suspension plays a crucial role in releasing endogenous nitrogen and greenhouse gases in shallow urban waters. However, the impacts of repeated re-suspension and photo-induced processes on migration and transformation from endogenous nitrogen, as well as the emission of greenhouse gases, remain unclear. This study simulated three conditions: re-suspension (Rs), re-suspension combined with ultravioletirradiation (Rs + UV), and ultraviolet irradiation (UV). The findings revealed that both repeated sediment re-suspension and exposure to UV light altered the characteristics of surface sediments. Decrease of convertible nitrogen in sediments, leading to the release of ion-exchangeable nitrogen (IEF-N) into NH4+-N and NO3--N, influenced greenhouse gas production differently under various conditions. The study observed the highest concentration of dissolved N2O in under UV irradiation, positively correlated with NO2--N and NO3--N. Re-suspension increased the turbidity of the overlying water and accelerated nitrification, resulting in the highest NO3--N concentration and the lowest dissolved N2O concentration. Additionally, in the Rs + UV dissolved N2O maintained the higher concentrations than in Rs, with greatest amount of N conversion in surface sediments, and a 59.45% reduction in IEF-N. The production of N2O during re-suspension was mainly positively correlated with NH4+-N in the overlying water. Therefore, this study suggest that repeated re-suspension and light exposure significantly influence nitrogen migration and transformation processes in sediment, providing a theoretical explanation for the eutrophication of water and greenhouse gas emissions.
Assuntos
Nitrogênio , Nitrogênio/análise , Raios Ultravioleta , Poluentes Químicos da Água/análiseRESUMO
Background: Cognitive models of post-traumatic stress disorder (PTSD) highlighted the effect of maladaptive cognitive processing in the development and maintenance of PTSD. PTSD is related to attentional bias (AB) toward threatening stimuli and greater attentional bias variability (ABV). Attentional bias modification (ABM) and attention control training (ACT) have demonstrated the effect of improving PTSD, but the results of randomized controlled trials (RCTs) are controversial. Objectives: The current study aimed to evaluate the extent of evidence supporting the efficacy of ABM in the treatment of PTSD. Design: Systematic review and meta-analysis. Methods: We searched PUBMED, PsycINFO, EMBASE, ClinicalTrials.gov, and the Cochrane Central Register of Controlled Trials for articles published between 1980 and 2022. RCTs of ABM for adult participants with PTSD symptoms were identified. The primary outcome was changes in PTSD severity, and the second outcome was changes in AB and ABV. Trial quality was assessed using the Cochrane Risk of Bias Tool. Publication bias was assessed using the Doi plot and Luis Furuya-Kanamori (LFK) index. Results: Eight RCTs comparing the effect of ABM to ACT were included in the review, and six studies were meta-analyzed. Meta-analysis favored ACT in improving PTSD symptoms and ABV, and the effect size was large. ABM and ACT demonstrated similar effects in improving AB. Conclusion: ACT should not only be seen as a control training condition but also has therapeutic values. However, since the current meta-analysis only included a limited number of studies, further research was still needed to examine the clinical value of ACT in PTSD treatment.
Attentional bias modification and attention control training in PTSD We summarized and analyzed studies on attentional bias modification (ABM) and attention control training (ACT) in PTSD. Our findings indicated that ACT was a more effective treatment condition. This study highlights the therapeutic value of ACT.