Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
País de afiliación
Intervalo de año de publicación
1.
J Med Virol ; 95(1): e28337, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36418241

RESUMEN

Viral reactivation is widespread in patients with severe pneumonia, yet the landscape of viral reactivation in the lungs is not well-known. This study aims to assess the landscape and clinical features of viral reactivation in the early onset of severe pneumonia in ICU patients. The clinical data from 97 patients were collected retrospectively from the intensive care units of five teaching hospitals between June 2018 and July 2021. Metagenomic next-generation sequencing (mNGS) of the bronchoalveolar lavage fluid (BALF) was performed at the onset of severe pneumonia. Cytomegalovirus (CMV), herpes simplex virus-1 (HSV-1), and Epstein-Barr virus (EBV) were the most common reactivated viruses in the lower respiratory tract of patients with severe pneumonia. After adjusting for the risk of confounding and competition of age, sex, sequential organ failure assessment, acute physiology chronic health assessment II and immunosuppression status, viral reactivation resulted in an overall 2.052-fold increase in 28-day all-cause mortality (95% CI: 1.004-4.194). This study showed that CMV, HSV-1, and EBV were the most common reactivated viruses in the lungs of patients with severe pneumonia. The existence of viral reactivations was associated with an increased risk of mortality. The simultaneous reactivation of multiple viruses needs to be considered in the design of clinical trials.


Asunto(s)
Infecciones por Citomegalovirus , Infecciones por Virus de Epstein-Barr , Herpesvirus Humano 1 , Neumonía Viral , Neumonía , Humanos , Estudios Retrospectivos , Herpesvirus Humano 4/fisiología , Citomegalovirus/fisiología , Pulmón
2.
Crit Care ; 27(1): 248, 2023 06 23.
Artículo en Inglés | MEDLINE | ID: mdl-37353839

RESUMEN

PURPOSE: The significance of detecting human herpesvirus 7 (HHV-7) in the lower respiratory tract of patients with severe pneumonia is unclear. This study aims to evaluate the clinical characteristics and prognosis of detecting HHV-7 in the lower respiratory tract of patients with severe pneumonia. METHODS: Patients with severe pneumonia requiring invasive mechanical ventilation and underwent commercial metagenomic next-generation sequencing (mNGS) testing of bronchoalveolar lavage fluid from January 2019 to March 2023 were enrolled in 12 medical centers. Clinical data of patients were collected retrospectively, and propensity score matching was used for subgroup analysis and mortality assessment. RESULTS: In a total number of 721 patients, 45 cases (6.24%) were identified with HHV-7 positive in lower respiratory tract. HHV-7 positive patients were younger (59.2 vs 64.4, p = 0.032) and had a higher rate of co-detection with Cytomegalovirus (42.2% vs 20.7%, p = 0.001) and Epstein-Barr virus (35.6% vs 18.2%, p = 0.008). After propensity score matching for gender, age, SOFA score at ICU admission, and days from ICU admission to mNGS assay, there was no statistically significant difference in the 28-day mortality rate between HHV-7 positive and negative patients (46.2% vs 36.0%, p = 0.395). Multivariate Cox regression analysis adjusting for gender, age, and SOFA score showed that HHV-7 positive was not an independent risk factor for 28-day mortality (HR 1.783, 95%CI 0.936-3.400, p = 0.079). CONCLUSION: HHV-7 was detected in the lungs of 6.24% of patients with severe pneumonia. The presence of HHV-7 in patients with severe pneumonia requiring invasive mechanical ventilation is associated with a younger age and co-detected of Cytomegalovirus and Epstein-Barr virus. While HHV-7 positivity was not found to be an independent risk factor for mortality in this cohort, this result may have been influenced by the relatively small sample size of the study.


Asunto(s)
Infecciones por Virus de Epstein-Barr , Herpesvirus Humano 7 , Neumonía , Humanos , Estudios Retrospectivos , Incidencia , Herpesvirus Humano 4 , Neumonía/epidemiología , Pulmón , Citomegalovirus
3.
Ren Fail ; 45(2): 2285873, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38044852

RESUMEN

OBJECTIVE: Peritoneal dialysis-related peritonitis (PDRP) presents a significant challenge for nephrologists. Continuous intraperitoneal cefazolin and ceftazidime are recommended for the treatment of peritonitis. However, some pharmacokinetic studies have shown that doses of 15-20 mg/kg/d may not achieve sufficient therapeutic levels. In this study, we investigated the pharmacokinetics of ceftazidime and cefazolin in patients with continuous ambulatory peritoneal dialysis-related peritonitis and compared the pharmacokinetic characteristics between traditional and modified treatment groups. METHODS: From February 2017 to December 2019, 42 PDRP patients (17 males, 25 females; mean age: 50.7 ± 12.1 years; mean body weight: 60.9 ± 11.8 kg) were recruited for the study, all participants were anuric. Twenty patients were enrolled in the traditional group and treated with cefazolin (1.0 g) and ceftazidime (1.0 g) via intraperitoneal administration once daily for 14 days. Twenty-two patients were enrolled in the modified group and received the same dose of antibiotics twice daily for the initial five days, followed by once daily for the subsequent nine days. Serum and dialysate samples were collected after days 1, 2, 3, 5, 7, 10, and 14 and analyzed via liquid chromatography-mass spectrometry. RESULTS: In the traditional group, the highest and lowest serum concentrations of ceftazidime were 35.9 and 21.7 µg/mL, respectively. The highest concentration of cefazolin was 54.6 µg/mL on day 5 and the lowest concentration was 30.4 µg/mL on day 1. In the modified group, the highest and lowest serum concentrations of ceftazidime were 102.2 and 54.8 µg/mL, respectively. The highest concentration of cefazolin was 141.7 µg/mL and the lowest concentration was 79.8 µg/mL. All antibiotic concentrations were above the minimum inhibitory concentration (MIC) level (8 µg/mL of ceftazidime and 2 µg/mL of cefazolin) throughout the treatment period. However, on day 1, the concentration of ceftazidime in the third bag of dialysate effluent from the traditional group fell below the MIC level. Despite remaining above the MIC, cefazolin concentration was consistently lower in the third bag of dialysate effluent from the traditional group throughout the treatment period. CONCLUSIONS: Intraperitoneal administration of cefazolin and ceftazidime at a dose of 1 g twice daily for 5 days and then once daily for the rest of the treatment period ensured adequate therapeutic levels of antibiotics for treating anuric PDRP patients.


Asunto(s)
Anuria , Diálisis Peritoneal Ambulatoria Continua , Peritonitis , Masculino , Femenino , Humanos , Adulto , Persona de Mediana Edad , Cefazolina , Ceftazidima/farmacocinética , Ceftazidima/uso terapéutico , Diálisis Peritoneal Ambulatoria Continua/efectos adversos , Diálisis Peritoneal Ambulatoria Continua/métodos , Estudios Prospectivos , Antibacterianos/uso terapéutico , Peritonitis/tratamiento farmacológico , Peritonitis/etiología , Soluciones para Diálisis , Anuria/etiología
4.
Clin Infect Dis ; 71(Suppl 4): S337-S362, 2020 12 23.
Artículo en Inglés | MEDLINE | ID: mdl-33367581

RESUMEN

The Chinese guidelines for IAI presented here were developed by a panel that included experts from the fields of surgery, critical care, microbiology, infection control, pharmacology, and evidence-based medicine. All questions were structured in population, intervention, comparison, and outcomes format, and evidence profiles were generated. Recommendations were generated following the principles of the Grading of Recommendations Assessment, Development, and Evaluation system or Best Practice Statement (BPS), when applicable. The final guidelines include 45 graded recommendations and 17 BPSs, including the classification of disease severity, diagnosis, source control, antimicrobial therapy, microbiologic evaluation, nutritional therapy, other supportive therapies, diagnosis and management of specific IAIs, and recognition and management of source control failure. Recommendations on fluid resuscitation and organ support therapy could not be formulated and thus were not included. Accordingly, additional high-quality clinical studies should be performed in the future to address the clinicians' concerns.


Asunto(s)
Fístula , Infecciones Intraabdominales , Cirujanos , China , Cuidados Críticos , Humanos , Infecciones Intraabdominales/diagnóstico , Infecciones Intraabdominales/tratamiento farmacológico
5.
Eur J Clin Pharmacol ; 76(7): 913-922, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32355990

RESUMEN

PURPOSE: To analyze the clinical features and risk factors of tigecycline-associated hypofibrinogenaemia and study whether cefoperazone/sulbactam combined with tigecycline aggravates coagulopathy or hypofibrinogenaemia. METHODS: A retrospective case-control study of patients with severe infection who were treated with tigecycline was conducted. Patients were assigned to the hypofibrinogenaemia group (< 2.0 g/L) and normal fibrinogen (normal) group (≥ 2.0 g/L) to assess the clinical features of patients with tigecycline-associated hypofibrinogenaemia. The traits of patients treated with cefoperazone/sulbactam in the hypofibrinogenaemia group were also analyzed. RESULTS: In total, 127 patients were enrolled in the study, including 71 patients with hypofibrinogenaemia and 56 patients with normal fibrinogen levels. Hypofibrinogenaemia developed at a median of 6 (4-8) days after tigecycline treatment, and the fibrinogen level returned to normal at a median of 3 (3-5) days after tigecycline discontinuation. In the multivariate analysis, intra-abdominal infection (p = 0.005), fibrinogen level at tigecycline initiation (p < 0.001), maintenance dose (p = 0.039), and treatment duration (p = 0.002) were found to be related to hypofibrinogenaemia. Treatment with cefoperazone/sulbactam was not associated with hypofibrinogenaemia (p = 0.681), but patients treated with cefoperazone/sulbactam had a higher incidence of coagulopathy (p = 0.009) and needed more blood products (p = 0.003) than those treated without cefoperazone/sulbactam. CONCLUSION: Tigecycline-associated hypofibrinogenaemia often developed on the 6th (4th-8th) day of tigecycline use and was associated with intra-abdominal infection, fibrinogen level at tigecycline initiation, maintenance dose, and treatment duration of tigecycline but not cefoperazone/sulbactam.


Asunto(s)
Afibrinogenemia/inducido químicamente , Antibacterianos/efectos adversos , Tigeciclina/efectos adversos , Adulto , Afibrinogenemia/sangre , Afibrinogenemia/epidemiología , Anciano , Anciano de 80 o más Años , Infecciones Bacterianas/sangre , Infecciones Bacterianas/tratamiento farmacológico , Infecciones Bacterianas/epidemiología , Pruebas de Coagulación Sanguínea , Estudios de Casos y Controles , Cefoperazona/uso terapéutico , Enfermedad Crítica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Sulbactam/uso terapéutico
7.
Front Aging Neurosci ; 16: 1349196, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38419646

RESUMEN

Background: Olfactory testing is emerging as a potentially effective screening method for identifying mild cognitive impairment in the elderly population. Objective: Olfactory impairment is comorbid with mild cognitive impairment (MCI) in older adults but is not well-documented in subdomains of either olfactory or subtypes of cognitive impairments in older adults. This meta-analysis was aimed at synthesizing the differentiated relationships with updated studies. Methods: A systematic search was conducted in seven databases from their availability to April 2023. A total of 38 publications were included, including 3,828 MCI patients and 8,160 healthy older adults. Two investigators independently performed the literature review, quality assessment, and data extraction. The meta-analyses were conducted with Stata to estimate the average effects and causes of the heterogeneity. Results: Compared to normal adults, MCI patients had severe impairments in olfactory function and severe deficits in specific domains of odor identification and discrimination. Olfactory impairment was more severe in patients with amnestic mild cognitive impairment than in patients with non-amnestic MCI. Diverse test instruments of olfactory function caused large heterogeneity in effect sizes. Conclusion: Valid olfactory tests can be complementary tools for accurate screening of MCI in older adults.

8.
Infect Drug Resist ; 17: 1003-1010, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38500637

RESUMEN

Background: Chromobacterium violaceum (C. violaceum) is a Gram-negative bacterium capable of causing severe infections in both humans and specific animals. Despite its infrequency, C. violaceum infections exhibit a notably high mortality rate. The timely and precise detection of this pathogen stands as a critical factor in achieving effective diagnosis and treatment. Traditional diagnostic approaches possess limitations, particularly in terms of their time-consuming nature and the range of pathogens they can identify. Metagenomic next-generation sequencing (mNGS) testing has emerged as a highly promising diagnostic tool for infectious diseases. Methods: Within this case report, we present a patient who developed a C. violaceum infection subsequent to a lower limb infection, leading to the progression of sepsis, a liver abscess, septic shock, multi-organ dysfunction, and altered mental status. Samples of the patient's blood and tissue from the lower limb skin are collected, and the infection is swiftly diagnosed through mNGS, allowing for the immediate initiation of suitable treatment. Results: The mNGS results revealed the patient's infection with C. violaceum. Subsequent conventional bacterial culture results were concordant with the mNGS findings. Following comprehensive management measures, including prompt and effective anti-infective treatment, the patient achieved cure and was successfully discharged. Conclusion: This case underscores the significance of employing advanced diagnostic methodologies like mNGS for the early detection of uncommon pathogens such as C. violaceum. The expedited diagnosis and timely intervention hold the potential to substantially enhance patient outcomes in cases of severe infections instigated by this bacterium.

9.
Int J Antimicrob Agents ; 63(5): 107152, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38513747

RESUMEN

INTRODUCTION: Ceftazidime-avibactam (CAZ-AVI) is a new option to treat KPC- and OXA-48 carbapenem-resistant Klebsiella pneumoniae (CRKP) infections. However, clinical evidence is limited regarding its use in treating CRKP infections, especially in solid organ transplantation (SOT) recipients. In this study, we assessed the efficacy of CAZ-AVI in treating CRKP infections in both the general population and the SOT recipients in comparison with other antibiotic regimens. METHODS: This is a single-centre retrospective cohort study of patients admitted between January 1, 2018 and June 30, 2021 with the diagnosis of CRKP infections receiving either CAZ-AVI or other regimens ≥ 72 hours and clinical outcomes were analysed. RESULTS: Of 200 patients with CRKP infections, 67 received CAZ-AVI, 133 received other regimens, and 50 were SOT recipients. In the SOT cohort, 30 patients received CAZ-AVI, and 20 received other regimens. The overall 30-day mortality was 38% in the SOT cohort. Compared with patients receiving other regimens, CAZ-AVI therapy resulted in lower 30-day mortality (23.3% vs. 60%, P = 0.014) and 90-day mortality (35.7% vs. 86.7%, P = 0.003), higher clinical cure (93.3% vs. 40%, P < 0.001) and microbiological clearance. Similar promising results of CAZ-AVI were also shown in the whole population cohort. Moreover, clinical outcomes of SOT recipients receiving CAZ-AVI were not inferior to those without SOT. CONCLUSIONS: CAZ-AVI therapy was associated with better clinical outcomes in CRKP infections in both the general population and SOT recipients. Considering the limitations of the present study, well-conducted RCTs are still warranted to confirm these findings.


Asunto(s)
Antibacterianos , Compuestos de Azabiciclo , Ceftazidima , Combinación de Medicamentos , Infecciones por Klebsiella , Klebsiella pneumoniae , Trasplante de Órganos , Humanos , Ceftazidima/uso terapéutico , Compuestos de Azabiciclo/uso terapéutico , Masculino , Femenino , Estudios Retrospectivos , Persona de Mediana Edad , Klebsiella pneumoniae/efectos de los fármacos , Infecciones por Klebsiella/tratamiento farmacológico , Infecciones por Klebsiella/mortalidad , Infecciones por Klebsiella/microbiología , Antibacterianos/uso terapéutico , Anciano , Trasplante de Órganos/efectos adversos , Enterobacteriaceae Resistentes a los Carbapenémicos/efectos de los fármacos , Receptores de Trasplantes , Adulto , Carbapenémicos/uso terapéutico , Resultado del Tratamiento , Pruebas de Sensibilidad Microbiana
10.
Front Immunol ; 14: 1099468, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36825017

RESUMEN

Immunosuppressed patients can contract parvovirus B19, and some may experience hemophagocytic lymphohistiocytosis (HLH). Herein, we describe the first report of hemophagocytic lymphohistiocytosis in a heart-lung transplant patient with concomitant parvovirus B19 infection. The patient was treated with intravenous immune globulin (IVIG) and the features of HLH were remission. This instance emphasizes the significance of parvovirus B19 monitoring in transplant patients with anemia; if HLH complicates the situation, IVIG may be an adequate remedy. Finally, a summary of the development in diagnosing and managing parvovirus B19 infection complicated by HLH is provided.


Asunto(s)
Eritema Infeccioso , Trasplante de Corazón-Pulmón , Linfohistiocitosis Hemofagocítica , Infecciones por Parvoviridae , Parvovirus B19 Humano , Humanos , Linfohistiocitosis Hemofagocítica/diagnóstico , Linfohistiocitosis Hemofagocítica/tratamiento farmacológico , Eritema Infeccioso/complicaciones , Inmunoglobulinas Intravenosas/uso terapéutico , Trasplante de Corazón-Pulmón/efectos adversos , Infecciones por Parvoviridae/complicaciones , Infecciones por Parvoviridae/diagnóstico
11.
Clin Rheumatol ; 41(11): 3383-3389, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-35882716

RESUMEN

OBJECTIVES: To identify biomarkers that reflect disease activity scores and to investigate the role of macrophage-associated chemokines in initial axial spondyloarthritis (axSpA). METHOD: Patients with axSpA were enrolled. The SpondyloArthritis Research Consortium of Canada (SPARCC) method was used to score bone marrow oedema (BMO) in the inflammatory lesions on magnetic resonance imaging (MRI). Radiographic assessment of the spine was performed using the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS). Clinical variables, including inflammatory markers, serum CC chemokine ligand 2 (CCL2), CCL3, CCL7, CCL8 and C-X3-C motif ligand 1 (CX3CL1), were measured. Correlation analysis between serum levels of these macrophage-associated chemokines and clinical data was performed. RESULTS: There were no significant differences between the axSpA group and the healthy control group in terms of serum levels of CCL2, CCL3 or CCL8. Compared to the healthy control group, the serum levels of CCL7 and CX3CL1 were significantly higher in ankylosing spondylitis (AS) (p = 0.045, p = 0.017, respectively). In the AS subgroup, the serum level of CX3CL1 had a positive correlation with SPARCC scores. CONCLUSIONS: In AS, serum CCL7 and CX3CL1 levels are elevated. The serum level of CX3CL1 is associated with MRI-determined oedema in AS. CX3CL1 may be useful as a biomarker to predict active inflammation in the sacroiliac joint (SIJ) in AS. Key Points • Serum levels of CX3CL1 are associated with MRI-determined oedema in AS. • CX3CL1 may be a useful biomarker to predict active inflammation in the sacroiliac joint in AS.


Asunto(s)
Espondiloartritis Axial , Espondiloartritis , Espondilitis Anquilosante , Biomarcadores , Quimiocinas , Quimiocinas CC , Edema/diagnóstico por imagen , Edema/patología , Humanos , Inflamación/patología , Ligandos , Macrófagos , Imagen por Resonancia Magnética/métodos , Articulación Sacroiliaca/diagnóstico por imagen , Articulación Sacroiliaca/patología , Índice de Severidad de la Enfermedad , Espondiloartritis/complicaciones , Espondilitis Anquilosante/complicaciones
12.
Infect Drug Resist ; 15: 6755-6761, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36447788

RESUMEN

Hemorrhagic fever with renal syndrome (HFRS), caused by hanta viruses (HTNV), can be complicated by severe complications. Seventeen percent of the HFRS patients with abdominal pain had acute pancreatitis (AP). The reported prevalence of AP among HFRS patients has a conspicuous high mortality rate. Of note, acute capillary cholangitis (ACC) among HFRS patients presenting with abdominal pain appears extremely rare, particularly independent of HFRS patients complicated with AP. The main pathophysiological mechanism of HFRS complicated with AP and ACC may be that it preferentially damages the microvascular and induces plasma leakage. To date, the management of severe HFRS cases is mainly based on supportive treatment, including extracorporeal blood purification and mechanical ventilation. Here, we describe an exceptionally rare case of a 34-year man who developed HFRS with AP and ACC while improving from HTNV infection via antiviral and supportive treatment.

13.
Front Immunol ; 12: 618830, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33717113

RESUMEN

Encephalitis caused by Epstein-Barr virus infection is uncommon, but most patients have a good outcome after symptomatic treatment. The infiltration of mononuclear cells in blood vessels and necrosis resulting from the immune response to Epstein-Barr virus infection in a very small number of patients seem to be the main cause of death. We describe a fatal case of Epstein-Barr virus encephalitis diagnosed by next-generation sequencing in an immune-competent adult but progressed to brainstem hemorrhage.


Asunto(s)
Tronco Encefálico/patología , Hemorragia Cerebral/etiología , Encefalitis Viral/complicaciones , Encefalitis Viral/etiología , Infecciones por Virus de Epstein-Barr/complicaciones , Infecciones por Virus de Epstein-Barr/etiología , Herpesvirus Humano 4 , Biomarcadores , Hemorragia Cerebral/diagnóstico , Encefalitis Viral/diagnóstico , Infecciones por Virus de Epstein-Barr/diagnóstico , Resultado Fatal , Humanos , Masculino , Persona de Mediana Edad , Evaluación de Síntomas , Tomografía Computarizada por Rayos X
14.
Front Immunol ; 12: 810677, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35095902

RESUMEN

Hemophagocytic lymphocytosis (HLH) is a rare disease caused by inborn errors of immunity (IEI), secondary to infection, lymphoma or autoimmune disorders, but we often overlook the fact that HLH can be secondary to inborn errors of metabolism (IEM). Here, we describe a patient who was diagnosed with glutaric aciduria type IIC complicated by features suggestive of possible HLH. The diagnosis of glutaric aciduria type IIC, a IEM, was confirmed by whole exome sequencing. The patient was treated with coenzyme Q10 and riboflavin which effectively improved her liver function. During treatment, the patient developed severe anemia and thrombocytopenia. Persistent fever, splenomegaly, cytopenias, increased ferritin, hypertriglyceridemia, hypofibrinogenemia, and hemophagocytosis in the bone marrow pointed to the diagnosis of HLH; however, the patient eventually died of gastrointestinal bleeding. After other potential causes were ruled out, the patient was diagnosed with glutaric aciduria type IIC complicated by features suggestive of possible HLH. When cytopenias occurs in IEM patients, HLH is a possible complication that cannot be ignored. This case suggests a possible relationship between IEM and risk for immune dysregulation.


Asunto(s)
Linfohistiocitosis Hemofagocítica/complicaciones , Linfohistiocitosis Hemofagocítica/diagnóstico , Deficiencia Múltiple de Acil Coenzima A Deshidrogenasa/complicaciones , Deficiencia Múltiple de Acil Coenzima A Deshidrogenasa/diagnóstico , Adulto , Biomarcadores , Susceptibilidad a Enfermedades , Flavoproteínas Transportadoras de Electrones/genética , Índices de Eritrocitos , Femenino , Predisposición Genética a la Enfermedad , Humanos , Proteínas Hierro-Azufre/genética , Linfohistiocitosis Hemofagocítica/etiología , Imagen por Resonancia Magnética , Oxidorreductasas actuantes sobre Donantes de Grupo CH-NH/genética , Fenotipo , Tomografía Computarizada por Rayos X
15.
Front Immunol ; 12: 768065, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35069540

RESUMEN

Balamuthia mandrillaris is one cause of a rare and severe brain infection called granulomatous amoebic encephalitis (GAE), which has a mortality rate of >90%. Diagnosis of Balamuthia GAE is difficult because symptoms are non-specific. Here, we report a case of Balamuthia amoebic encephalomyelitis (encephalitis and myelitis) in a woman with breast cancer. She sustained trauma near a garbage dump 2 years ago and subsequently developed a skin lesion with a Mycobacterium abscessus infection. She experienced dizziness, lethargy, nausea and vomiting, inability to walk, and deterioration of consciousness. Next-generation sequencing of cerebrospinal fluid (CSF) samples revealed B. mandrillaris, and MRI of both brain and spinal cord showed abnormal signals. T-cell receptor (TCR) sequencing of the CSF identified the Top1 TCR. A combination of amphotericin B, flucytosine, fluconazole, sulfamethoxazole, trimethoprim, clarithromycin, pentamidine, and miltefosine was administrated, but she deteriorated gradually and died on day 27 post-admission.


Asunto(s)
Amebiasis , Neoplasias de la Mama , Encefalomielitis , Adulto , Amebiasis/tratamiento farmacológico , Amebiasis/genética , Amebiasis/inmunología , Balamuthia mandrillaris/genética , Balamuthia mandrillaris/inmunología , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/genética , Neoplasias de la Mama/inmunología , Neoplasias de la Mama/parasitología , Encefalomielitis/tratamiento farmacológico , Encefalomielitis/genética , Encefalomielitis/inmunología , Encefalomielitis/parasitología , Resultado Fatal , Femenino , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Imagen por Resonancia Magnética
16.
Front Microbiol ; 12: 833054, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35222317

RESUMEN

OBJECT: To reveal convergent IGH signatures and the association with severity of coronavirus disease 2019 (COVID-19) patients. METHOD: A total of 25 COVID-19 inpatients were classified into three clinical conditions: mild, severe, and critical. We analyzed convergent IGH signatures by ImmuHub® B-cell receptor (BCR) profiling system. RESULTS: IGH singleton frequency in patients is significantly lower than that of healthy donors (HDs). The clonality index of IGH in patients is significantly higher than that in HDs. Nevertheless, no significant difference was observed among the three groups. The difference in IGH clonality (top five clones) between post- and pretreatment was significant in the improvement and deterioration groups. Three common public motifs were shared by all COVID-19 patients: ARDYGG, RWYFDY, and YYYYGMDV. CONCLUSION: B cells could recognize severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and produce clonal expansion. Patients who had better outcomes after treatment had higher IGH clonality. Three common public motifs-ARDYGG, RWYFDY, and YYYYGMDV-might be used for vaccine development (ChiCTR2000029626).

17.
Front Cell Infect Microbiol ; 10: 606340, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33537243

RESUMEN

The macrophage stimulating protein (MSP)-Recepteur d'origine nantais (RON) signaling pathway regulates macrophage function. Here, we verified RON receptor expression in bone marrow-derived dendritic cells (BMDCs) by real time-PCR, Western blot, and flow cytometry. Flow cytometry was used to detect the changes in MHC II and CD86 expression following the inhibition of RON in BMDCs and splenic dendritic cells (DCs). Immunoprecipitation and Western blot were used to detect the level of MHC II and CD86 ubiquitination. An enzyme-linked immunosorbent assay was used to detect cytokine release, and a mixed lymphocyte reaction was performed to evaluate DC maturity. The results show that the inhibition of RON leads to an increase in March-1 transcription, which intensifies the ubiquitination of MHC II and CD86 and ultimately leads to a decreased level of these two molecules. The mixed lymphocyte reaction provided evidence that RON inhibition decreased the ability of DCs to promote the proliferation of T cells. The MSP-RON signaling pathway may play an important role in lipopolysaccharide (LPS)-stimulated DC maturation through March-I and may protect DC differentiation following LPS stimulation.


Asunto(s)
Lipopolisacáridos , Transducción de Señal , Diferenciación Celular , Células Dendríticas
18.
Front Immunol ; 11: 569082, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33117355

RESUMEN

Macrophage-stimulating protein (MSP), a soluble protein mainly synthesized by the liver, is the only known ligand for recepteur d'origine nantais (RON), which is a member of the MET proto-oncogene family. Recent studies show that the MSP-RON signaling pathway not only was important in tumor behavior but also participates in the occurrence or development of many immune system diseases. Activation of RON in macrophages results in the inhibition of nitric oxide synthesis as well as lipopolysaccharide (LPS)-induced inflammatory response. MSP-RON is also associated with chronic inflammatory responses, especially chronic liver inflammation, and might serve as a novel regulator of inflammation, which may affect the metabolism in the body. Another study provided evidence of the relationship between MSP-RON and autoimmune diseases, suggesting a potential role for MSP-RON in the development of drugs for autoimmune diseases. Moreover, MSP-RON plays an important role in maintaining the stability of the tissue microenvironment and contributes to immune escape in the tumor immune microenvironment. Here, we summarize the role of MSP-RON in immunity, based on recent findings, and lay the foundation for further research.


Asunto(s)
Factor de Crecimiento de Hepatocito/metabolismo , Inmunidad Innata , Inflamación/etiología , Inflamación/metabolismo , Proteínas Proto-Oncogénicas/metabolismo , Proteínas Tirosina Quinasas Receptoras/metabolismo , Transducción de Señal , Enfermedad Aguda , Animales , Biomarcadores , Microambiente Celular/genética , Microambiente Celular/inmunología , Enfermedad Crónica , Susceptibilidad a Enfermedades , Humanos , Sistema Inmunológico/inmunología , Sistema Inmunológico/metabolismo , Macrófagos/inmunología , Macrófagos/metabolismo , Unión Proteica , Proto-Oncogenes Mas
19.
J Zhejiang Univ Sci B ; 21(5): 378-387, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32425003

RESUMEN

OBJECTIVE: This study summarizes and compares clinical and laboratory characteristics of 34 patients admitted to the intensive care unit (ICU) for complications from coronavirus disease 2019 (COVID-19) at the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China from Jan. 22 to Mar. 5, 2020. METHODS: A total of 34 patients were divided into two groups, including those who required noninvasive ventilation (NIV) and invasive mechanical ventilation (IMV) with additional extracorporeal membrane oxygenation (ECMO) in 11 patients. Clinical features of COVID-19 patients were described and the parameters of clinical characteristics between the two groups were compared. RESULTS: The rates of the acute cardiac and kidney complications were higher in IMV cases than those in NIV cases. Most patients had lymphocytopenia on admission, with lymphocyte levels dropping progressively on the following days, and the more severe lymphopenia developed in the IMV group. In both groups, T lymphocyte counts were below typical lower limit norms compared to B lymphocytes. On admission, both groups had higher than expected amounts of plasma interleukin-6 (IL-6), which over time declined more in NIV patients. The prothrombin time was increased and the levels of platelet, hemoglobin, blood urea nitrogen (BUN), D-dimer, lactate dehydrogenase (LDH), and IL-6 were higher in IMV cases compared with NIV cases during hospitalization. CONCLUSIONS: Data showed that the rates of complications, dynamics of lymphocytopenia, and changes in levels of platelet, hemoglobin, BUN, D-dimer, LDH and IL-6, and prothrombin time in these ICU patients were significantly different between IMV and NIV cases.


Asunto(s)
Infecciones por Coronavirus/complicaciones , Infecciones por Coronavirus/terapia , Ventilación no Invasiva , Neumonía Viral/complicaciones , Neumonía Viral/terapia , Respiración con Presión Positiva , Lesión Renal Aguda/virología , Anciano , Anciano de 80 o más Años , Betacoronavirus , Nitrógeno de la Urea Sanguínea , COVID-19 , China , Oxigenación por Membrana Extracorpórea , Femenino , Productos de Degradación de Fibrina-Fibrinógeno/análisis , Cardiopatías/virología , Hemoglobinas/análisis , Hospitalización , Humanos , Unidades de Cuidados Intensivos , Interleucina-6/sangre , L-Lactato Deshidrogenasa/sangre , Linfopenia/virología , Masculino , Persona de Mediana Edad , Pandemias , Tiempo de Protrombina , Estudios Retrospectivos , SARS-CoV-2
20.
Zhongguo Wei Zhong Bing Ji Jiu Yi Xue ; 21(11): 679-81, 2009 Nov.
Artículo en Zh | MEDLINE | ID: mdl-19930887

RESUMEN

OBJECTIVE: To discuss and evaluate whether a remote critical care program network can improve clinical and economic performance across multiple intensive care units (ICUs). METHODS: The consultative center composed of intensivists and physician extenders to provide remote consultations for the critical patients. Supporting software, including electronic data display and communication interface were available both in the ICU center and at the remote sites. Clinical and economic performance after 1 year application of the program was compared with the performance before the intervention. RESULTS: During January 2008 to July 2009, there had been 63 hospitals in Zhejiang Province joined the network. A total of 1 617 patients had received remote critical care consultations. One hundred and seventy-three remote teaching ward rounds and 72 lectures had been conducted on the network during this period. The before-and after-data comparison for 23 hospitals which had joined the network for longer than 1 year showed that, the program had decreased ICUs raw mortality by 11.6% (12.9% vs. 14.6%), and reduced transfer rate by 38.3% (2.9% vs. 4.7%), and ICUs bed occupancy rate increased by 6.1% (83.4% vs. 78.6%). CONCLUSION: The application of a remote critical care program was associated with improved clinical outcomes of critically ill patients and hospital financial performance.


Asunto(s)
Cuidados Críticos , Telemedicina , Humanos , Unidades de Cuidados Intensivos , Pronóstico
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA