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1.
FASEB J ; 38(1): e23354, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-38085162

RESUMO

Head and neck squamous cell carcinoma (HNSCC) is the sixth most common malignancy worldwide, and the development of novel therapeutic strategies for HNSCC requires a profound understanding of tumor cells and the tumor microenvironment (TME). Additionally, HNSCC has a poor prognosis, necessitating the use of genetic markers for predicting clinical outcomes in HNSCC. In this study, we performed single-cell sequencing analysis on tumor tissues from seven HNSCC patients, along with one adjacent normal tissue. Firstly, the analysis of epithelial cell clusters revealed two clusters of malignant epithelial cells, characterized by unique gene expression patterns and dysregulated signaling pathways compared to normal epithelial cells. Secondly, the examination of the TME unveiled extensive crosstalk between fibroblasts and malignant epithelial cells, potentially mediated through ligand-receptor interactions such as COL1A1-SDC1, COL1A1-CD44, and COL1A2-SDC1. Furthermore, transcriptional heterogeneity was observed in immune cells present in the TME, including macrophages and dendritic cells. Finally, leveraging the gene expression profiles of malignant epithelial cells, we developed a prognostic model comprising six genes, which we validated using two independent datasets. These findings shed light on the heterogeneity within HNSCC tumors and the intricate interplay between malignant cells and the TME. Importantly, the developed prognostic model demonstrates high efficacy in predicting the survival outcomes of HNSCC patients.


Assuntos
Carcinoma , Neoplasias de Cabeça e Pescoço , Humanos , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Prognóstico , Neoplasias de Cabeça e Pescoço/genética , Células Epiteliais , Microambiente Tumoral/genética
2.
Int Microbiol ; 27(2): 535-544, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37505307

RESUMO

Cajaninstilbene acid (CSA), longistylin A (LLA), and longistylin C (LLC) are three characteristic stilbenes isolated from pigeon pea. The objective of this study was to evaluate the antibacterial activity of these stilbenes against Staphylococcus aureus and even methicillin-resistant Staphylococcus aureus (MRSA) and test the possibility of inhibiting biofilm formation. The minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of these stilbenes were evaluated. And the results showed that LLA was most effective against tested strains with MIC and MBC values of 1.56 µg/mL followed by LLC with MIC and MBC values of 3.12 µg/mL and 6.25 µg/mL as well as CSA with MIC and MBC values of 6.25 µg/mL and 6.25-12.5 µg/mL. Through growth curve and cytotoxicity analysis, the concentrations of these stilbenes were determined to be set at their respective 1/4 MIC in the follow-up research. In an anti-biofilm formation assay, these stilbenes were found to be effectively inhibited bacterial proliferation, biofilm formation, and key gene expressions related to the adhesion and virulence of MRSA. It is the first time that the anti-S. aureus and MRSA activities of the three stilbenes have been systematically reported. Conclusively, these findings provide insight into the anti-MRSA mechanism of stilbenes from pigeon pea, indicating these compounds may be used as antimicrobial agents or additives for food with health functions, and contribute to the development as well as application of pigeon pea in food science.


Assuntos
Cajanus , Staphylococcus aureus Resistente à Meticilina , Estilbenos , Antibacterianos/farmacologia , Estilbenos/farmacologia , Testes de Sensibilidade Microbiana , Anticorpos/farmacologia , Biofilmes
3.
BMC Infect Dis ; 24(1): 442, 2024 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-38671376

RESUMO

BACKGROUND: Urinary tract infection (UTI) is a common cause of sepsis. Elderly patients with urosepsis in intensive care unit (ICU) have more severe conditions and higher mortality rates owing to factors such as advanced age, immunosenescence, and persistent host inflammatory responses. However, comprehensive studies on nomograms to predict the in-hospital mortality risk in elderly patients with urosepsis are lacking. This study aimed to construct a nomogram predictive model to accurately assess the prognosis of elderly patients with urosepsis and provide therapeutic recommendations. METHODS: Data of elderly patients with urosepsis were extracted from the Medical Information Mart for Intensive Care (MIMIC) IV 2.2 database. Patients were randomly divided into training and validation cohorts. A predictive nomogram model was constructed from the training set using logistic regression analysis, followed by internal validation and sensitivity analysis. RESULTS: This study included 1,251 patients. LASSO regression analysis revealed that the Glasgow Coma Scale (GCS) score, red cell distribution width (RDW), white blood count (WBC), and invasive ventilation were independent risk factors identified from a total of 43 variables studied. We then created and verified a nomogram. The area under the receiver operating characteristic curve (AUC), net reclassification improvement (NRI), integrated discrimination improvement (IDI), and decision curve analysis (DCA) of the nomogram were superior to those of the traditional SAPS-II, APACHE-II, and SOFA scoring systems. The Hosmer-Lemeshow test results and calibration curves suggested good nomogram calibration. The IDI and NRI values showed that our nomogram scoring tool performed better than the other scoring systems. The DCA curves showed good clinical applicability of the nomogram. CONCLUSIONS: The nomogram constructed in this study is a convenient tool for accurately predicting in-hospital mortality in elderly patients with urosepsis in ICU. Improving the treatment strategies for factors related to the model could improve the in-hospital survival rates of these patients.


Assuntos
Mortalidade Hospitalar , Unidades de Terapia Intensiva , Nomogramas , Sepse , Infecções Urinárias , Humanos , Idoso , Feminino , Masculino , Infecções Urinárias/mortalidade , Unidades de Terapia Intensiva/estatística & dados numéricos , Sepse/mortalidade , Idoso de 80 Anos ou mais , Fatores de Risco , Prognóstico , Curva ROC , Estudos Retrospectivos
4.
Arch Gynecol Obstet ; 2024 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-38236281

RESUMO

OBJECTIVE: Gestational diabetes mellitus (GDM) is a prevalent complication during pregnancy associated with numerous adverse outcomes. There is emerging evidence suggesting the potential of probiotics as a therapeutic measure for GDM; however, existing studies have yielded contradictory results. This meta-analysis assessed the efficacy of probiotics on blood glucose management and pregnancy outcomes in patients with GDM. METHODS: A comprehensive search of the PubMed, Embase, and Cochrane databases was conducted up to August 22, 2023, to identify relevant studies. The primary outcomes focused on fasting blood glucose (FBG), fasting serum insulin (FSI), homeostasis model assessment of insulin resistance (HOMA-IR), and quantitative insulin sensitivity check index (QUICKI). The secondary outcomes included various maternal and neonatal outcomes. RESULTS: This meta-analysis included 15 randomized controlled trials (RCTs), encompassing 1006 patients with GDM. The results showed that, compared to a placebo, probiotics demonstrated a significant reduction in FBG (MD - 2.58, 95% CI - 4.38 to - 0.79, p < 0.01), FSI (MD - 2.29, 95% CI - 3.40 to - 1.18, p < 0.01), HOMA-IR (MD - 0.56, 95% CI - 0.81 to - 0.32, p < 0.01), and birth weight (MD - 101.20, 95% CI - 184.62 to - 17.77, p = 0.02). Furthermore, it resulted in fewer neonatal intensive care unit (NICU) admissions (RR 0.60, 95% CI 0.40-0.89, p = 0.01), instances of hyperbilirubinemia (RR 0.31, 95% CI 0.16-0.61, p < 0.01), and elevated QUICKI (MD 0.01, 95% CI 0.00-0.01, p < 0.01). No significant impact was observed in the other analyzed outcomes. CONCLUSIONS: In conclusion, probiotics improve FBG, FSI, and HOMA-IR, and reduce the occurrence of neonatal hyperbilirubinemia, NICU admissions, and birth weight in the offspring of patients with GDM. However, the quality of the evidence, as per the GRADE approach, varies from high to low, necessitating further studies to consolidate these findings.

5.
BMC Cardiovasc Disord ; 23(1): 173, 2023 03 30.
Artigo em Inglês | MEDLINE | ID: mdl-36997869

RESUMO

BACKGROUND: This study aimed to investigate the correlation between the high-risk characteristics of high-resolution MRI carotid vulnerable plaques and the clinical risk factors and concomitant acute cerebral infarction (ACI). METHODS: Forty-five patients diagnosed with a single vulnerable carotid plaque by MRI were divided into two groups based on whether they had ipsilateral ACI. The clinical risk factors and the observation values or frequency of occurrence of high-risk MRI phenotypes of plaque volume, LRNC, IPH and ulcer were statistically compared between the two groups. RESULTS: A total of 45 vulnerable carotid artery plaques were found in 45 patients, 23 patients with ACI and 22 patients without ACI. There were no significant differences in age, sex, smoking, serum TC, TG and LDL between the two groups (all P > 0.05), but the ACI group had significantly more patients with hypertension (P < 0.05) and the without ACI group coronary heart disease (P < 0.05). The volume of vulnerable carotid plaque in the group with ACI (1004.19 ± 663.57 mm3) was significantly larger than that in the group without ACI (487.21 ± 238.64 mm3) (P < 0.05). The phenotype of vulnerable carotid artery plaque was 13 cases of LRNC, 8 cases of LRNC + IPH, 5 cases of LRNC + Ulcer, and 19 cases of LRNC + IPH + Ulcer. There was no significant difference in this distribution between the two groups (all P > 0.05) with the exception of LRNC + IPH + Ulcer. The 14 cases of LRNC + IPH + LRNC + IPH + Ulcer (60.87%) in the group with ACI and was significantly greater than the 5 (22.73%) in patients without ACI (P < 0.05). CONCLUSION: It is preliminarily thought that hypertension is the main clinical risk factor for vulnerable carotid plaques with ACI and the combination of plaque volume with vulnerable carotid plaque and LRNC + IPH + Ulcer is a high-risk factor for complicated ACI. It has high clinical therapeutic value due to the accurate diagnosis of responsible vessels and plaques with high-resolution MRI.


Assuntos
Isquemia Encefálica , Estenose das Carótidas , Hipertensão , Placa Aterosclerótica , Acidente Vascular Cerebral , Humanos , Úlcera/complicações , Acidente Vascular Cerebral/etiologia , Artérias Carótidas/diagnóstico por imagem , Imageamento por Ressonância Magnética/efeitos adversos , Isquemia Encefálica/complicações , Placa Aterosclerótica/complicações , Fatores de Risco , Estenose das Carótidas/complicações , Estenose das Carótidas/diagnóstico por imagem , Doença Aguda , Infarto Cerebral/etiologia , Infarto Cerebral/complicações , Hipertensão/complicações , Hipertensão/diagnóstico
6.
Am J Emerg Med ; 74: 146-151, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37837823

RESUMO

PURPOSE: This study's objective was to investigate the association between exposure to different intensities of central venous pressure (CVP) over time in patients with septic shock with 28-day mortality and acute kidney injury (AKI). MATERIALS AND METHODS: We obtained data from the AmsterdamUMCdb, which includes data on patients ≥18 years old with septic shock undergoing CVP monitoring. The primary outcome was mortality by day 28. Piecewise exponential additive mixed models were used to estimate the strength of the association over time. RESULTS: 9668 patients were included in the study. They exhibited 8.2% overall mortality at 28 days and 41.1% AKI incidence. Daily time-weighted average CVP was strongly associated with increased mortality at 28 days, primarily within 24 h of ICU admission. The mortality rate of patients was lowest when the CVP was 6-12 cmH2O. When the time of high CVP (TWA-CVP >12 cmH2O) exposure within the first 24 h was >5 h, the risk of death increased by 2.69-fold. Additionally, patients exposed to high CVP had a significantly increased risk of developing AKI. CONCLUSIONS: The optimal CVP range for patients with septic shock within 24 h of ICU admission is 6-12 cmH2O. Mortality increased when patients were exposed to high CVP for >5 h.


Assuntos
Injúria Renal Aguda , Choque Séptico , Humanos , Adolescente , Pressão Venosa Central , Estudos Retrospectivos , Injúria Renal Aguda/etiologia , Hospitalização
7.
J Asian Nat Prod Res ; 25(4): 349-356, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35796599

RESUMO

Two new withaphysalin-type withanolides (18-O-ethylwithaphysalin R and 5-O-ethylphysaminimin C, 1 and 2), along with twelve known withanolides (3-14), were purified and identified from Physalis peruviana L. The chemical structures of these new isolates were elucidated through analyzing spectroscopic and HRESIMS data. All the obtained metabolites were appraised for their potential antiproliferative activity against the human breast cancer cell line MCF-7. Compound 7 was discovered to exhibit potent activity with an IC50 value of 3.51 µM and compounds 2, 6 and 14 showed weak cytotoxic effect.


Assuntos
Antineoplásicos , Physalis , Vitanolídeos , Humanos , Physalis/química , Vitanolídeos/química , Extratos Vegetais/química
8.
Am J Otolaryngol ; 42(2): 102787, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33316724

RESUMO

OBJECTIVES: Transoral laser microsurgery (TLM) has gradually gained approval in the treatment of early glottic cancer. However, the oncological outcomes of TLM for glottic cancer with anterior commissure (AC) involvement are still a controversial topic. We aimed to systematically review the literature on glottic cancer (Tis-T2) with patients who received TLM as first choice therapy and to evaluate several prognostic outcomes in patients with or without AC involvement. METHODS: A systematic literature retrieval was conducted in PubMed, Medline (Ovid) and Web of Science. Risk ratio (RR) between AC involvement (AC+) or without AC involvement (AC-) was assessed and 95% confidence interval(95%CI) was calculated, which was performed on RevMan 5.3. RESULTS: A total of 20 literatures were included when comparing the local recurrence (LR) rate of patients with or without AC involvement, and the results suggested LR matters in group AC+ over group AC- (RR = 2.39, 95%CI = 1.99-2.86, p < 0.00001). The 5-year overall survival(5yOS) rate included 10 studies, and there was no significant difference between AC+ and AC- (RR = 0.98, 95%CI = 0.93-1.02, p = 0.35). The laryngeal preservation rate (LPR) of AC+ was lower than that of AC- (RR = 0.97, 95%CI = 0.94-1.00, p = 0.04). CONCLUSION: The results indicate that the prognosis of early glottic cancer with AC involvement is more likely to have higher local recurrence and lower LPR but no statistical difference in 5yOS rate.


Assuntos
Glote/cirurgia , Neoplasias Laríngeas/patologia , Neoplasias Laríngeas/cirurgia , Laringe/patologia , Terapia a Laser/métodos , Microcirurgia/métodos , Procedimentos Cirúrgicos Bucais/métodos , Feminino , Humanos , Neoplasias Laríngeas/mortalidade , Masculino , Recidiva Local de Neoplasia/epidemiologia , Estadiamento de Neoplasias , Prognóstico , Taxa de Sobrevida
9.
BMC Surg ; 21(1): 108, 2021 Mar 03.
Artigo em Inglês | MEDLINE | ID: mdl-33658017

RESUMO

BACKGROUND: Tracheobronchial foreign body aspiration (TFBA) is a critical disease in children and is extremely dangerous, even life-threatening. The factors affecting the occurrence and prognosis of TFBA are complex. The purpose of this study is to examine the external and intrinsic factors affecting clinical features of TFBA in West China and propose potential effective intervention measures. METHODS: We retrospectively analyzed the clinical data of pediatric patients diagnosed with TFBA with foreign bodies (FBs) removed by rigid bronchoscopy under general anesthesia at the otolaryngology department from December 2017 to November 2018. The data included age, sex, clinical symptoms, type and location of FB, guardians, prehospital duration and residence of these pediatric patients. RESULTS: The ratio of males (72) to females (53) was 1.4:1. Children aged from 1 to 3 years accounted for 76% (95/125) of patients. Cough, continuous fever and dyspnea were the primary symptoms. The right primary bronchus was the most common location of FB detection by rigid bronchoscopy (67 cases, 53.6%). Organic FBs were most common in our study. Guardians of patients significantly differed in the rural (parents 16, grandparents 31) and urban (parents 52, grandparents 26) groups (χ2 = 12.583, p = 0.000). More children in the rural group than in the urban group had a treatment delay longer than 72 h. More children in the group with no history of FB aspiration (12, 25%) than in the group with prior FB aspiration had a treatment delay longer than 72 h. CONCLUSION: Pediatric TFBA is a common emergency in otolaryngology. Age, sex, tracheobronchial anatomy and other physiological elements were defined as intrinsic factors, while guardians, residence, FB species and prehospital time were defined as external factors of TFBA. External and intrinsic factors both influence the occurrence and progression of TFBA. It is extremely important to take effective measures to control external factors, which can decrease morbidity and mortality.


Assuntos
Brônquios , Corpos Estranhos , Traqueia , Broncoscopia , Pré-Escolar , China , Feminino , Corpos Estranhos/diagnóstico , Corpos Estranhos/cirurgia , Humanos , Lactente , Masculino , Prognóstico , Estudos Retrospectivos
10.
BMC Surg ; 21(1): 340, 2021 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-34496808

RESUMO

BACKGROUND: Subglottic paragangliomas (PGs) are exceptionally rare and unpredictable, occasionally presenting at an atypical location. There are three different clinical forms of subglottic PGs: intraluminal (tracheal PGs), extraluminal (thyroid PGs) and the mixed type (both intraluminal and extraluminal, mixed-subglottic PGs). These tumors are usually misdiagnosed as other relatively common primary thyroid or laryngotracheal tumors, and the treatment is troublesome. CASE PRESENTATION: A 22-year-old male patient with subglottic PGs has been successively misdiagnosed as thyroid tumors and subglottic hemangiomas, and lastly underwent local extended lumpectomy and laryngotracheal reconstruction with a pedicled thoracoacromial artery perforator flap (PTAPF). The patient was decannulated successfully after the second-stage tracheal reconstruction with a local flap, and no evidence of local recurrence and distant metastasis of the tumor until now. CONCLUSION: Subglottic PGs can be easily misdiagnosed as laryngotracheal or thyroid tumors when presented at an atypical location. It is essential for otolaryngologists and head and neck surgeons to remain vigilant against these tumors. If the tumor is not diagnosed or removed completely, patients may encounter a risk of lethal paroxysm, which is incredibly troublesome.


Assuntos
Neoplasias Laríngeas , Paraganglioma , Procedimentos de Cirurgia Plástica , Neoplasias da Glândula Tireoide , Adulto , Humanos , Neoplasias Laríngeas/diagnóstico , Neoplasias Laríngeas/cirurgia , Masculino , Recidiva Local de Neoplasia , Paraganglioma/diagnóstico , Paraganglioma/cirurgia , Neoplasias da Glândula Tireoide/cirurgia , Adulto Jovem
11.
BMC Surg ; 20(1): 173, 2020 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-32736545

RESUMO

BACKGROUND: Laryngeal rhabdomyosarcomas (RMSs) mainly occurred in children, while were extremely rare in adults. Consequently, less information was available to guide clinicians to manage adult RMSs in larynx. CASE PRESENTATION: A 42-year-old man presented with a 2-year history of gradually worsening hoarseness. Then, he underwent a surgery with suspension laryngoscope with initially being diagnosed as vocal cord cyst. Unexpectedly, the lesion was proved to be embryonal rhabdomyosarcoma (ERMS), pathologically. Next, he underwent chemoradiotherapy, while the tumor relapsed 18 months after the last treatment. Subsequently, a vertical hemilaryngectomy and a right selective neck dissection was performed, and the chemotherapy according to the anticancer drug sensitivity in vitro was arranged. Until the last check-up 18 months after chemotherapy, the patient did not display clinical or radiological signs of local recurrence and metastases. CONCLUSIONS: Misdiagnosis and missed diagnosis of laryngeal RMSs might appear when tumors presented as smooth protuberance. We reported the first case of laryngeal RMSs in an adult with the multidisciplinary strategy based on the chemosensitivity assay in vitro. Furthermore, a systematic review of the literature was also discussed, highlighting the initial diagnostic pitfalls and subsequent management problems that may occur with this uncommon tumor.


Assuntos
Neoplasias Laríngeas , Laringe , Recidiva Local de Neoplasia/terapia , Rabdomiossarcoma Embrionário , Adulto , Quimiorradioterapia , Terapia Combinada , Erros de Diagnóstico , Feminino , Humanos , Neoplasias Laríngeas/diagnóstico , Neoplasias Laríngeas/cirurgia , Neoplasias Laríngeas/terapia , Laringectomia , Laringe/cirurgia , Masculino , Esvaziamento Cervical , Rabdomiossarcoma Embrionário/diagnóstico , Rabdomiossarcoma Embrionário/cirurgia , Rabdomiossarcoma Embrionário/terapia
12.
Chem Pharm Bull (Tokyo) ; 67(11): 1255-1258, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31685754

RESUMO

One new 3,24-dinor-2,4-seco-ursane triterpene, rosanortriterpene C (1), together with four known compounds including 24-norursane-type nortriterpenes (2-3), 24-noroleanane-type nortriterpene (4), ursane-type triterpene (5), was isolated from the fruits of Rosa laevigata var. leiocapus. The new structure was elucidated through comprehensive spectroscopic analysis, including one dimensional (1D) and 2D NMR data, as well as electrospray ionization high resolution (HR-ESI) MS and IR spectrometry. Compounds 1-5 showed moderate anti-inflammatory activities against the production of nitric oxide (NO) in RAW264.7 cells stimulated by lipopolysaccharide (LPS) with IC50 values of 10.35 ± 0.92, 14.28 ± 1.20, 5.04 ± 1.43, 29.29 ± 3.64, and 14.37 ± 0.59 µM, respectively.


Assuntos
Anti-Inflamatórios/farmacologia , Frutas/química , Rosa/química , Triterpenos/farmacologia , Animais , Anti-Inflamatórios/química , Anti-Inflamatórios/isolamento & purificação , Relação Dose-Resposta a Droga , Lipopolissacarídeos/antagonistas & inibidores , Lipopolissacarídeos/farmacologia , Camundongos , Conformação Molecular , Óxido Nítrico/antagonistas & inibidores , Óxido Nítrico/biossíntese , Células RAW 264.7 , Relação Estrutura-Atividade , Triterpenos/química , Triterpenos/isolamento & purificação
13.
J Huazhong Univ Sci Technolog Med Sci ; 35(2): 291-294, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25877367

RESUMO

The reliability and validity of risk assessment scale (RAS) of pressure sore during 3S surgery were investigated. RAS of pressure sore was designed independently during 3S surgery. Five operating room nursing experts were selected to consult and detect face validity. Convenient and purposive sampling of 707 samples was conducted. Cronbach's alpha was used to measure content reliability and evaluate the internal consistence of RAS. The structural reliability was investigated by exploratory factor analysis method. The results showed that the content validity index was 0.92, and Cronbach's alpha of content reliability was 0.71. Structural validity, detected by Bartlett sphericity test, was 135.3 for 707 samples with the difference being statistically significant (P<0.01). KMO value was 0.729. The accumulative variance contribution ratio of common factor was 64.63%. The exploratory factor analysis showed the factor load of every clause was larger than 0.596. It was concluded that RAS of pressure sore for 3S surgery has better validity and reliability, and it could be used for evaluating and screening the high risk patients with pressure sores during surgery in order to efficiently reduce the occurrence of pressure sore during surgery. RAS of pressure sore for 3S surgery is worth to be popularized.


Assuntos
Período Intraoperatório , Úlcera por Pressão/etiologia , Medição de Risco , Humanos , Reprodutibilidade dos Testes , Inquéritos e Questionários
14.
Front Oncol ; 14: 1384913, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38884096

RESUMO

Hyalinizing clear cell carcinomas (HCCCs) are infrequent, malignant tumors characterized by their low-grade nature. They typically originate from minor salivary glands. However, these tumors can potentially emerge in any location with minor salivary glands, including the nasopharynx. This report presents two cases of HCCC in females aged 61 and 72 years, with both tumors approximately 4 cm in size. In the first case, a 72-year-old female presented with recurrent bilateral epistaxis. Imaging studies revealed a nasopharyngeal mass, surgically excised, and histopathological analysis confirmed HCCC. Postoperatively, the patient received combined chemotherapy and radiotherapy, achieving a recurrence-free status 2.5 years later. The second case involves a 61-year-old female with a two-year history of bloody nasal discharge. Imaging studies identified a nasopharyngeal lesion, surgically removed, and histopathological examination confirmed HCCC. This patient underwent radiotherapy followed by combination chemotherapy with paclitaxel and carboplatin, displaying no signs of recurrence upon reevaluation after 10 months. These cases highlight the successful management of HCCC through a comprehensive, multimodal approach, integrating surgical intervention and adjuvant therapy. The favorable outcomes emphasize the significance of a thorough treatment strategy for HCCC in the nasopharynx, providing valuable insights for clinicians. Further studies are essential to enhance our understanding of this rare entity and refine treatment protocols for optimized patient outcomes.

15.
Nat Prod Res ; 38(1): 169-173, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-36190791

RESUMO

The rhizome of Rohdea chinensis (Baker) N.Tanaka (RRc) is a famous folk medicine for the treatment of carbuncles and pharyngitis. Steroidal saponins (SSs) were considered to be the most abundant active constituents in RRc. However, to date, the in-depth study of SSs is still lacking. This study was aimed to investigate the SSs profiles of RRc extract by HPLC-ESI-QTOF-MS/MS. Analysis was performed on an Agilent poroshell 120 EC-C18 column (2.1 mm × 100 mm, i.d., 2.7 µm) with 0.1% formic acid aqueous solution and acetonitrile as the mobile phase under gradient conditions. The results showed that 32 SSs including 20 furospirostanol, 11 spirostanol and 1 pseudo-spirostanol saponins were identified, 5 of which were reported in this plant for the first time. This is the first report on the analysis of SSs in RRc. This novel analysis method may stimulate further research regarding the identification of SSs in other plant species.


Assuntos
Asparagaceae , Saponinas , Espirostanos , Espectrometria de Massas em Tandem/métodos , Espectrometria de Massas por Ionização por Electrospray/métodos , Cromatografia Líquida de Alta Pressão/métodos , Saponinas/química
16.
Tissue Eng Part B Rev ; 30(2): 176-197, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37603497

RESUMO

The potential of urine-derived stem cells (USCs) for tissue engineering and regenerative medicine has attracted much attention during the last few decades. However, it has been suggested that the effects of the USCs may be endowed by their paracrine extracellular vesicles (EVs) rather than their differentiation. Compared with the USCs, the USC-EVs can cross the barriers more easily and safely, and their inclusions may mediate intercellular communication and promote the tissue repair. This article has summarized the current knowledge and applications about the USC-EVs in tissue engineering and regenerative medicine, and discussed the prospects and challenges for using them as an alternative to cell therapy. Impact statement Urine-derived stem cells (USCs) represent a newly discovered type of stem cells, and studies have proved that the beneficial effects of the USCs may be manifested through their paracrine extracellular vesicles (EVs) rather than through their own differentiation, which opens up new avenues for tissue engineering and regenerative medicine strategies. Therefore, this review aims to summarize the latest research progress and potential clinical applications of the USC-EVs, highlighting the promising potential of the USC-EVs as a therapeutic option in kidney regeneration, genital regeneration, nerve regeneration, bone and cartilage regeneration, and wound healing.


Assuntos
Vesículas Extracelulares , Medicina Regenerativa , Humanos , Engenharia Tecidual , Rim , Regeneração , Células-Tronco
17.
Adv Sci (Weinh) ; 11(4): e2306289, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38044313

RESUMO

Rapid and effective control of non-compressible massive hemorrhage poses a great challenge in first-aid and clinical settings. Herein, a biopolymer-based powder is developed for the control of non-compressible hemorrhage. The powder is designed to facilitate rapid hemostasis by its excellent hydrophilicity, great specific surface area, and adaptability to the shape of wound, enabling it to rapidly absorb fluid from the wound. Specifically, the powder can undergo sequential cross-linking based on "click" chemistry and Schiff base reaction upon contact with the blood, leading to rapid self-gelling. It also exhibits robust tissue adhesion through covalent/non-covalent interactions with the tissues (adhesive strength: 89.57 ± 6.62 KPa, which is 3.75 times that of fibrin glue). Collectively, this material leverages the fortes of powder and hydrogel. Experiments with animal models for severe bleeding have shown that it can reduce the blood loss by 48.9%. Studies on the hemostatic mechanism also revealed that, apart from its physical sealing effect, the powder can enhance blood cell adhesion, capture fibrinogen, and synergistically induce the formation of fibrin networks. Taken together, this hemostatic powder has the advantages for convenient preparation, sprayable use, and reliable hemostatic effect, conferring it with a great potential for the control of non-compressible hemorrhage.


Assuntos
Coagulantes , Hemostáticos , Animais , Pós , Aderências Teciduais , Hemorragia , Hemostáticos/farmacologia
18.
Nat Prod Res ; 38(1): 28-36, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-35867026

RESUMO

Two new phenolic glycosides (1 and 2), one known analogue (3), along with a new diterpene glucoside (4) were obtained from ethanolic extract of the stems of Eurya chinensis R. Br. The structures of these isolated compounds were identified by extensive analysis of HRESIMS and NMR spectroscopic data. The cytotoxicities of these compounds were evaluated on MCF-7, A549, HepG2, CaCo2 and 5-8 F cell lines by MTT method, but no obvious activities were observed.


Assuntos
Diterpenos , Ericales , Humanos , Glicosídeos/farmacologia , Glicosídeos/química , Estrutura Molecular , Células CACO-2 , Glucosídeos , Diterpenos/química
19.
Nutrients ; 15(16)2023 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-37630712

RESUMO

Fermented oats are gaining popularity due to their nutritional value and the increasing consumer demand for health-conscious foods. These oats are believed to offer enhanced phytochemical and nutritional profiles compared to unfermented oats. The increased nutritional content of fermented oats is associated with various health benefits, including anti-inflammatory and antioxidant activities, which could potentially reduce the risk of chronic diseases. Further investigations are warranted to elucidate the nutritional benefits of fermented oats in human nutrition. This mini review provides a comprehensive overview of fermented oat products available on the market and the various production methods employed for fermenting oats. Furthermore, this review investigates how fermentation affects the chemical composition and biological functions of oats. Additionally, this manuscript presents some future perspectives on fermented oat products by discussing potential research directions and opportunities for further development. The findings presented in this review contribute to the expanding body of knowledge on fermented oats as a promising functional food, paving the way for future studies and applications in the field of nutrition and health.


Assuntos
Avena , Alimento Funcional , Humanos , Grão Comestível , Fermentação , Conhecimento
20.
Sci Rep ; 13(1): 12697, 2023 08 04.
Artigo em Inglês | MEDLINE | ID: mdl-37542106

RESUMO

Septic patients in the intensive care unit (ICU) often develop sepsis-associated delirium (SAD), which is strongly associated with poor prognosis. The aim of this study is to develop a machine learning-based model for the early prediction of SAD. Patient data were extracted from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database and the eICU Collaborative Research Database (eICU-CRD). The MIMIC-IV data were divided into a training set and an internal validation set, while the eICU-CRD data served as an external validation set. Feature variables were selected using least absolute shrinkage and selection operator regression, and prediction models were built using logistic regression, support vector machines, decision trees, random forests, extreme gradient boosting (XGBoost), k-nearest neighbors and naive Bayes methods. The performance of the models was evaluated in the validation set. The model was also applied to a group of patients who were not assessed or could not be assessed for delirium. The MIMIC-IV and eICU-CRD databases included 14,620 and 1723 patients, respectively, with a median time to diagnosis of SAD of 24 and 30 h. Compared with Non-SAD patients, SAD patients had higher 28-days ICU mortality rates and longer ICU stays. Among the models compared, the XGBoost model had the best performance and was selected as the final model (internal validation area under the receiver operating characteristic curves (AUROC) = 0.793, external validation AUROC = 0.701). The XGBoost model outperformed other models in predicting SAD. The establishment of this predictive model allows for earlier prediction of SAD compared to traditional delirium assessments and is applicable to patients who are difficult to assess with traditional methods.


Assuntos
Delírio , Encefalopatia Associada a Sepse , Humanos , Teorema de Bayes , Unidades de Terapia Intensiva , Aprendizado de Máquina , Delírio/diagnóstico , Delírio/etiologia
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