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1.
Indian J Med Microbiol ; 49: 100611, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38735644

RESUMEN

Non-O1/non-O139 Vibrio cholerae, a comparably poorly studied pathogen is culpable of sporadic but serious infections. We report a case of non O1 non O139 Vibrio cholerae septicemia in a middle aged male recently diagnosed with carcinoma pancreas. He underwent biliary tract interventional procedure for hematemesis three weeks before the presentation. Now, he presented with fever, abdominal pain, hematemesis and melena. Endoscopy revealed severe portal hypertensive gastropathy and mild hemobilia. Blood culture grew Vibrio cholerae, identified as non O1 non O139 by serogrouping. He recovered successfully with timely diagnosis, appropriate antibiotics and supportive measures.


Asunto(s)
Antibacterianos , Neoplasias Pancreáticas , Sepsis , Vibrio cholerae no O1 , Humanos , Masculino , Neoplasias Pancreáticas/complicaciones , Neoplasias Pancreáticas/microbiología , Vibrio cholerae no O1/aislamiento & purificación , Vibrio cholerae no O1/clasificación , Vibrio cholerae no O1/patogenicidad , Vibrio cholerae no O1/genética , Sepsis/microbiología , Sepsis/diagnóstico , Persona de Mediana Edad , Antibacterianos/uso terapéutico , Cólera/microbiología , Cólera/diagnóstico , Cólera/complicaciones , Vibriosis/diagnóstico , Vibriosis/microbiología
2.
Molecules ; 28(24)2023 Dec 05.
Artículo en Inglés | MEDLINE | ID: mdl-38138443

RESUMEN

Cholera is an exceptionally aggressive infectious disease characterized by the potential to induce acute, copious, watery diarrhea of considerable severity and renal inflammation. Diabetic nephropathy is a serious complication of diabetes mellitus that can lead to kidney failure through inflammation; thus, anti-inflammatory agents are promising therapies for diabetic nephropathy. Previous studies have shown that the essential oil of Zanthoxylum myriacanthum var. pubescens Huang, Maqian essential oil (MQEO), exhibits potent antibacterial, anti-inflammatory, and renoprotective activities in diabetic mice and has emerged as a potential therapeutic drug for the treatment of diabetic nephropathy complications. Therefore, the present study was carried out to screen the potential inhibition of cholera toxin and the diabetic renoprotective activity of MQEO through computational approaches. Twelve chemical constituents derived from MQEO were docked with cholera toxin and the target proteins involved in diabetic nephropathy, namely, TXNIP, Nrf2, and DPP IV, and, subsequently, the predictions of molecular dynamic simulations, the drug-likeness properties, and the ADMET properties were performed. α-terpineol showed high binding affinities toward the cholera toxin protein. For TXNIP, among all the chemical constituents, α-phellandrene and p-cymene showed strong binding affinities with the TXNIP protein and displayed relatively stable flexibility at the hinge regions of the protein, favorable physicochemical properties in the absence of hepatotoxicity, and low cytotoxicity. For Nrf2, α-terpineol exhibited the highest binding affinity and formed a very stable complex with Nrf2, which displayed high pharmacokinetic properties. All compounds had low free-binding energies when docked with the DPP IV protein, which suggests potent biological activity. In conclusion, based on a computational approach, our findings reveal that MQEO constituents have inhibitory activity against cholera toxin and are promising therapeutic agents for suppressing diabetic inflammation and for the treatment of diabetic nephropathy complications.


Asunto(s)
Cólera , Diabetes Mellitus Experimental , Nefropatías Diabéticas , Aceites Volátiles , Ratones , Animales , Nefropatías Diabéticas/metabolismo , Aceites Volátiles/farmacología , Aceites Volátiles/uso terapéutico , Toxina del Cólera/química , Toxina del Cólera/metabolismo , Toxina del Cólera/uso terapéutico , Diabetes Mellitus Experimental/tratamiento farmacológico , Cólera/complicaciones , Cólera/tratamiento farmacológico , Simulación de Dinámica Molecular , Factor 2 Relacionado con NF-E2/metabolismo , Inflamación/tratamiento farmacológico , Antiinflamatorios/farmacología
3.
Malawi Med J ; 35(1): 67-69, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38124692

RESUMEN

A 41-year old woman was treated for cholera at one of the health centers in Blantyre. Two days after discharge from the treatment unit, she developed weakness of all 4 limbs and difficulties with speech. She was referred to the Queen Elizabeth Central Hospital. A CT scan of the brain showed hypodense lesions in the pons. A diagnosis of central pontine myelinolysis was made. She recovered slowly and was discharged from hospital 17 days after admission.


Asunto(s)
Cólera , Mielinólisis Pontino Central , Femenino , Humanos , Adulto , Cólera/complicaciones , Cólera/diagnóstico , Cólera/patología , Mielinólisis Pontino Central/diagnóstico , Mielinólisis Pontino Central/patología , Puente/patología , Encéfalo , Tomografía Computarizada por Rayos X , Imagen por Resonancia Magnética
4.
Microbiol Spectr ; 11(4): e0205423, 2023 08 17.
Artículo en Inglés | MEDLINE | ID: mdl-37378569

RESUMEN

The increasing incidence of non-O1/non-O139 Vibrio cholerae (NOVC) has been observed worldwide. However, septicemia caused by NOVC remains a rare condition that has received limited attention. Currently, there are no established treatment guidelines for bloodstream infections caused by NOVC, and the understanding of this condition mainly relies on individual case reports. Although NOVC bacteremia can be fatal in a small percentage of cases, knowledge about its microbiological features remains limited. Here, we present a case of V. cholerae septicemia caused by NOVC in a 46-year-old man with chronic viral hepatitis and liver cirrhosis. The isolated strain, named V. cholerae VCH20210731 and classified as a new sequence type (ST), ST1553, was found to be susceptible to most of the antimicrobial agents tested. O-antigen serotyping of V. cholerae VCH20210731 revealed that it belonged to serotype Ob5. Interestingly, the ctxAB genes, which are typically associated with V. cholerae, were absent in VCH20210731. However, the strain possessed 25 other potential virulence genes, such as hlyA, luxS, hap, and rtxA. The resistome of V. cholerae VCH20210731 included several genes, including qnrVC4, crp, almG, and parE. Nevertheless, susceptibility testing demonstrated that the isolate was susceptible to most of the antimicrobial agents tested. Phylogenetic analysis indicated that the closest strain to VCH20210731 was strain 120 from Russia, differing by 630 single-nucleotide polymorphisms (SNPs). Our findings contribute to the understanding of the genomic epidemiological characteristics and antibiotic resistance mechanisms of this invasive bacterial pathogen. IMPORTANCE This study highlights the discovery of a novel ST1553 V. cholerae strain in China, providing valuable insights into the genomic epidemiology and global transmission dynamics of V. cholerae. It is important to note that clinical presentations of NOVC bacteremia can vary significantly, and the isolates demonstrate genetic diversity. Consequently, health care professionals and public health experts should remain vigilant about the potential for infection with this pathogen, particularly considering the elevated prevalence of liver disease in China.


Asunto(s)
Bacteriemia , Cólera , Vibrio cholerae no O1 , Masculino , Humanos , Persona de Mediana Edad , Serogrupo , Filogenia , Vibrio cholerae no O1/genética , Bacteriemia/microbiología , Cirrosis Hepática/complicaciones , Susceptibilidad a Enfermedades , Cólera/complicaciones , Cólera/microbiología
5.
Infect Dis Obstet Gynecol ; 2023: 4563797, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37260611

RESUMEN

Introduction: Discuss the impact of cholera infection on pregnant women, fetus, and neonates and review the safety of cholera vaccines in pregnancy. Methods: This study was carried out as a narrative review during November 2022. A thorough literature review was conducted on the following databases: PubMed, Scopus, SciELO, CINAHL, Web of Science, and ScienceDirect. The following parameters were assessed from the included studies: type of cholera vaccine, cholera symptoms, cholera treatment, effect of cholera on pregnancy, effect of cholera treatment on pregnancy, effect of cholera vaccine on pregnancy, risk factors for fetuses and neonates, and prevention of cholera. The authors independently extracted data from the 24 included studies. Results: Cholera infection is a serious threat on pregnancy as it could lead to increased stillbirths and neonatal death. Fetal death was shown to occur mainly in the third trimester as most of the pregnant women infected with cholera had spontaneous abortions even after controlling for other confounding variables such as maternal age, dehydration level, and vomiting. Neonatal death was attributed mainly to congenital malformations and low Apgar scores with no improvements. Besides, cholera vaccines have shown to be safe in pregnancy and have proven to lower fetal and neonatal malformations among vaccinated compared to nonvaccinated pregnant women. Conclusion: This narrative summarizes the different complications due to cholera infection in pregnancy. It also reviews the safety of cholera vaccine administration in pregnant women.


Asunto(s)
Aborto Espontáneo , Vacunas contra el Cólera , Cólera , Muerte Perinatal , Recién Nacido , Embarazo , Femenino , Humanos , Vacunas contra el Cólera/efectos adversos , Cólera/epidemiología , Cólera/prevención & control , Cólera/complicaciones , Mortinato
6.
Trop Med Int Health ; 26(11): 1512-1525, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34469615

RESUMEN

OBJECTIVE: Accurately assessing dehydration severity is a critical step in reducing mortality from diarrhoea, but is complicated by cholera and undernutrition. This study seeks to assess the accuracy of two clinical diagnostic models for dehydration among patients over five years with cholera and undernutrition and compare their respective performance to the World Health Organization (WHO) algorithm. METHODS: In this secondary analysis of data collected from the NIRUDAK study, accuracy of the full and simplified NIRUDAK models for predicting severe and any dehydration was measured using the area under the Receiver Operator Characteristic curve (AUC) among patients over five with/without cholera and with/without wasting. Bootstrap with 1000 iterations was used to compare the m-index for each NIRUDAK model to that of the WHO algorithm. RESULTS: A total of 2,139 and 2,108 patients were included in the nutrition and cholera subgroups respectively with an overall median age of 35 years (IQR = 42) and 49.6% female. All subgroups had acceptable discrimination in diagnosing severe or any dehydration (AUC > 0.60); though the full NIRUDAK model performed best among patients without cholera, with an AUC of 0.82 (95%CI:0.79, 0.85) and among patients without wasting, with an AUC of 0.79 (95%CI:0.76, 0.81). Compared with the WHO's algorithm, both the full and simplified NIRUDAK models performed significantly better in terms of their m-index (p < 0.001) for all comparisons, except for the simplified NIRUDAK model in the wasting group. CONCLUSIONS: Both the full and simplified NIRUDAK models performed less well in patients over five years with cholera and/or wasting; however, both performed better than the WHO algorithm.


Asunto(s)
Cólera/complicaciones , Deshidratación/diagnóstico , Desnutrición/complicaciones , Adolescente , Adulto , Algoritmos , Área Bajo la Curva , Bangladesh , Niño , Preescolar , Deshidratación/terapia , Femenino , Fluidoterapia , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Índice de Severidad de la Enfermedad , Adulto Joven
7.
Medicine (Baltimore) ; 100(25): e26460, 2021 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-34160447

RESUMEN

RATIONALE: Acute hemorrhagic necrotizing enterocolitis (AHNE) is a rapidly progressive and extremely dangerous disease. Here we report a rare case caused by Vibrio cholerae (V cholerae). PATIENT CONCERNS: A 70-year-old man was admitted to our emergency department because of a sudden loss of consciousness. DIAGNOSES: On admission with severe toxic shock, the patient presented with elevated body temperature, decreased blood pressure, abdominal tenderness and rebound pain, predominantly on the right side. Computed tomography showed swelling and thickening of the right colon and peritoneal effusion. Necrosis was found in the hepatic flexure of the colon. On the basis of these results, the patient was diagnosed with AHNE. INTERVENTIONS AND OUTCOMES: After fluid resuscitation, an exploratory laparotomy was performed immediately. The procedure was successful. Despite antibiotic therapy, the patient's clinical condition progressively deteriorated and he died of multi-organ failure on day 3 after admission. LESSONS: AHNE is a rapidly progressive and extremely dangerous disease. Here we report a case of AHNE caused by non-O1/non-O139 V cholerae infection. The clinical features, phenotypic analyses and the presence of a panel of known virulence genes in the isolated strain are described. To the best of our knowledge, this is the first report of V cholerae causing severe AHNE, which is of profound pedagogical significance.


Asunto(s)
Cólera/diagnóstico , Enterocolitis Necrotizante/diagnóstico , Insuficiencia Multiorgánica/microbiología , Vibrio cholerae no O1/patogenicidad , Anciano , Antibacterianos/uso terapéutico , Cólera/complicaciones , Cólera/microbiología , Cólera/terapia , Colon/diagnóstico por imagen , Colon/microbiología , Colon/patología , Colon/cirugía , Enterocolitis Necrotizante/complicaciones , Enterocolitis Necrotizante/microbiología , Enterocolitis Necrotizante/terapia , Resultado Fatal , Fluidoterapia , Humanos , Masculino , Tomografía Computarizada por Rayos X , Vibrio cholerae no O1/aislamiento & purificación
8.
Trop Biomed ; 38(1): 183-186, 2021 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-33797544

RESUMEN

Spontaneous bacterial peritonitis caused by Vibrio cholerae non-O1/ non-O139 is a rare phenomenon. V. cholerae is known as a common aetiology of epidemic diarrheal disease and rarely causes extra-gastrointestinal infections. In this report, a 52-year-old man presented to our hospital with a clinical scenario for chronic liver cirrhosis with low grade fever and loose stools. V. cholerae was isolated from peritoneal fluid culture, which was further confirmed as non-O1/ non-O139 strain by multiplex polymerase chain reaction. The patient was successfully treated with antimicrobial therapy and peritoneal drainage. This case represents the first isolation of V. cholerae non-O1/ non-O139 strain from peritoneal fluid.


Asunto(s)
Cólera/microbiología , Cirrosis Hepática/complicaciones , Peritonitis/microbiología , Vibrio cholerae no O1 , Cólera/complicaciones , Humanos , Masculino , Persona de Mediana Edad
9.
Mil Med ; 186(11-12): e1246-e1249, 2021 11 02.
Artículo en Inglés | MEDLINE | ID: mdl-33252133

RESUMEN

Cholera is a well known cause of significant disease, particularly in resource-poor nations, but it is very rare in developed countries. The morbidity and mortality of cholera is resultant from large-volume diarrhea, hypovolemia, and electrolyte derangement. In the following case, a 60-year-old man with no recent travel history presented to the emergency department with muscle cramping, abdominal pain, and gastrointestinal distress. It was later confirmed that he was suffering from cholera. On presentation, he was hyperkalemic with ECG changes and soon went into a hypovolemic shock. After a complicated hospital course, he fortunately made a complete recovery. This case demonstrates that common complaints may result in uncommon diagnoses. It is important to pay attention to the clinical situation and intervene accordingly.


Asunto(s)
Lesión Renal Aguda , Cólera , Hiperpotasemia , Rabdomiólisis , Lesión Renal Aguda/etiología , Cólera/complicaciones , Cólera/diagnóstico , Humanos , Hiperpotasemia/complicaciones , Hiperpotasemia/diagnóstico , Hipovolemia , Masculino , Persona de Mediana Edad , Rabdomiólisis/complicaciones , Rabdomiólisis/diagnóstico
10.
Indian J Med Microbiol ; 38(3 & 4): 489-491, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33154272

RESUMEN

Vibrios have been identified to cause extra-intestinal complications apart from the occasional cholera-like diarrhoeal outbreaks. The non-O1/O139 Vibrio cholerae strains are ubiquitous in environmental water bodies and hence pose a threat to people even without obvious risk factors. We describe a case of sepsis in a child with spinal dysraphism caused by a V. cholerae O9 strain belonging to a novel sequence type (ST520). The present case highlights the need of considering V. cholerae non-O1/O139 as one of the pathogens while dealing with sepsis cases, and also, the study expounds the importance of proper characterisation of the pathogen for an effective treatment.


Asunto(s)
Bacteriemia/virología , Cólera/virología , Sepsis/virología , Vibrio cholerae/clasificación , Bacteriemia/complicaciones , Preescolar , Cólera/complicaciones , Humanos , Masculino , Tipificación de Secuencias Multilocus , Filogenia , Sepsis/complicaciones , Alineación de Secuencia , Serogrupo , Especificidad de la Especie , Disrafia Espinal/complicaciones , Vibrio cholerae/genética , Vibrio cholerae/aislamiento & purificación
11.
NPJ Biofilms Microbiomes ; 6(1): 41, 2020 10 14.
Artículo en Inglés | MEDLINE | ID: mdl-33057043

RESUMEN

Microbiome dynamics influence the health and functioning of human physiology and the environment and are driven in part by interactions between large numbers of microbial taxa, making large-scale prediction and modeling a challenge. Here, using topological data analysis, we identify states and dynamical features relevant to macroscopic processes. We show that gut disease processes and marine geochemical events are associated with transitions between community states, defined as topological features of the data density. We find a reproducible two-state succession during recovery from cholera in the gut microbiomes of multiple patients, evidence of dynamic stability in the gut microbiome of a healthy human after experiencing diarrhea during travel, and periodic state transitions in a marine Prochlorococcus community driven by water column cycling. Our approach bridges small-scale fluctuations in microbiome composition and large-scale changes in phenotype without details of underlying mechanisms, and provides an assessment of microbiome stability and its relation to human and environmental health.


Asunto(s)
Bacterias/clasificación , ARN Ribosómico 16S/genética , Análisis de Secuencia de ADN/métodos , Adulto , Océano Atlántico , Bacterias/genética , Bacterias/aislamiento & purificación , Cólera/complicaciones , ADN Bacteriano/genética , ADN Ribosómico/genética , Microbioma Gastrointestinal , Voluntarios Sanos , Humanos , Masculino , Océano Pacífico , Filogenia , Microbiología del Agua
12.
Epidemiol Infect ; 148: e186, 2020 07 08.
Artículo en Inglés | MEDLINE | ID: mdl-32635946

RESUMEN

In mainland China, the clinical, epidemiological and genetic features of non-O1/non-O139 Vibrio cholerae (NOVC) bacteraemia have been scarcely investigated. Herein, we describe a patient with NOVC bacteraemia diagnosed in our hospital and present a retrospective analysis of literature reports of 32 other cases in China, detailing the clinical epidemiology, antibiotic resistance and molecular characteristics of isolates. Most patients were male (84.8%; median age, 53 years) and had predisposing factors, such as cirrhosis, malignant tumours, blood diseases and diabetes. In addition to fever, gastroenteritis was the most frequent presenting symptom. The mortality rate during hospitalisation was 12.1%. NOVC bacteraemia cases were more common in June-August, with the majority in coastal provinces and the Yangtze River basin. Only 42.4% of cases were attributed to consumption of marine (aquatic) products. Tetracycline, third-generation cephalosporins, and fluoroquinolones were the most effective antimicrobial agents, and the highest frequencies of resistance were recorded for ampicillin/sulbactam (37.5%), amoxicillin/clavulanic acid (33.3%), ampicillin (29.2%) and sulfamethoxazole (20%). Multi-drug resistant isolates were not detected. Limited data indicate that ctxAB and tcpA genes were absent in all NOVC isolates but other putative virulence genes (hlyA, toxR, hap and rtxA) were common. Ten multilocus sequence types were identified with marked genetic heterogeneity between different isolates. As clinical manifestations of NOVC bacteraemia may vary widely, and isolates exhibit genetic diversity, clinicians and public health experts should be alerted to the possibility of infection with this pathogen because of the high prevalence of liver disease in China.


Asunto(s)
Bacteriemia/epidemiología , Bacteriemia/microbiología , Cólera/sangre , Cólera/complicaciones , Vibrio cholerae , Anciano , Antibacterianos/uso terapéutico , Bacteriemia/tratamiento farmacológico , China/epidemiología , Cólera/tratamiento farmacológico , Cólera/epidemiología , Humanos , Masculino
13.
Rev. cuba. pediatr ; 92(1): e919, ene.-mar. 2020. tab
Artículo en Español | LILACS, CUMED | ID: biblio-1093744

RESUMEN

Introducción: La séptima pandemia del cólera llegó a las Américas en 1991. En Cuba hacía más de 130 años no se registraba ningún caso. Objetivos: Identificar y caracterizar las complicaciones por cólera y su relación con características clínicas y de tratamiento. Métodos Se realizó un estudio descriptivo y prospectivo desde el año 2013-2017 a los pacientes a los que se les confirmó el V. cholerae como causa exclusiva de enfermedad diarreica aguda. Las variables cualitativas se describieron estadísticamente mediante frecuencias absolutas y relativas y para las variables cuantitativas se utilizó la media, la mediana, la desviación estándar y el rango intercuartílico como medidas de dispersión. Resultados: El 36,5 por ciento de los enfermos presentó complicaciones donde la deshidratación fue la más frecuente. El valor de la mediana del tiempo que medió entre la aparición de los síntomas y la atención en el centro fue menor en los pacientes con complicaciones comparado con el observado en los no complicados, pero la diferencia no fue significativa: (24 horas [RI: 24,0-72,0 horas] vs. 48 horas [RI: 24,0-72,0 horas], p= 0,355). Conclusiones: La mayoría de los enfermos no presentaron complicaciones y la más frecuente es la deshidratación ligera(AU)


Introduction: The seventh cholera pandemic arrived to the Americas in 1991. In Cuba for more than 130 years there were no case reports. Objectives: To identify and characterize the complications by cholera and its relation with clinical characteristics and treatment. Methods: A descriptive and prospective study was conducted from 2013 to 2017 to the patients who had been confirmed with V. cholerae as exclusive cause of acute diarrheal disease. The qualitative variables were described statistically using absolute and relative frequencies, and for the quantitative variables were used the average, medium, and standard deviation and the interquartile range as dispersion measures. Results: 36.5 percent of the patients presented complications where dehydration was the most frequent. The value of the median time between the onset of symptoms and attention in the center was lower in patients with complications in comparison with the observed in non-complicated patients, but the difference was not significant (24.0 h [RI: 24,0-72,0 h] vs. 48,0 h [RI: 24,0-72,0 h], p= 0.355). Conclusions: Most of the patients did not present complications and the most frequent is the slight dehydration (AU)


Asunto(s)
Humanos , Masculino , Femenino , Embarazo , Recién Nacido , Lactante , Preescolar , Niño , Adolescente , Cólera/complicaciones , Cólera/terapia , Deshidratación/complicaciones
14.
Diagn Microbiol Infect Dis ; 96(2): 114927, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31740171

RESUMEN

Vibrio-related gastroenteritis in the United States is mostly associated with the consumption of raw or improperly cooked seafood. We describe a case of a stage IV lung adenocarcinoma patient who became ill after eating crab while visiting Upstate New York. Molecular testing and culture confirmed a coinfection with V. parahaemolyticus and a nontoxigenic strain V. cholera.


Asunto(s)
Cólera/complicaciones , Cólera/microbiología , Coinfección , Gastroenteritis/complicaciones , Gastroenteritis/microbiología , Neoplasias/complicaciones , Vibriosis/complicaciones , Vibriosis/microbiología , Adenocarcinoma del Pulmón/complicaciones , Adenocarcinoma del Pulmón/diagnóstico , Anciano , Cólera/diagnóstico , Coinfección/diagnóstico , Comorbilidad , Gastroenteritis/diagnóstico , Humanos , Masculino , Estadificación de Neoplasias , Neoplasias/diagnóstico , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Vibriosis/diagnóstico , Vibrio cholerae/clasificación , Vibrio parahaemolyticus/clasificación
15.
Rev Chilena Infectol ; 36(3): 392-395, 2019 Jun.
Artículo en Español | MEDLINE | ID: mdl-31859761

RESUMEN

We report a case of V. cholerae non-O1 / non-O139 bacteremia in an 81-year-old woman with abdominal pain, fever, vomiting, liquid stools, choluria and jaundice, while visiting a rural area without access to potable water. The identification was made by the MALDI-TOF mass spectrometry technique and subsequently the non-toxigenic non-O1 / non-139 strain was confirmed in the national reference laboratory. The molecular characterization demonstrated the absence of the cholera toxin gene (CTX), and the TCP pilus, however, presented 5 of 6 virulence genes present in an island of homologous pathogenicity named VPaI-7 of V. parahaemolyticus (vcs N2 +, vcs C2 +, vcs V2 +, toxR-, vspD +, T vopF +) and in addition it was positive for hylAy rtxA virulence genes recognized outside the island. This is the first case reported in Chile of a clinical strain of V. cholerae non-O1, non-O139 isolated from blood culture that carries in its genome a homologous segment of the pathogenicity island named VPaI-7 of V. parahaemolyticus, which codifies for a type III secretion system (TTSS) that probably contributes to his virulence.


Asunto(s)
Bacteriemia , Proteínas Bacterianas/química , Vibrio cholerae no O1/química , Vibrio cholerae/química , Anciano de 80 o más Años , Bacteriemia/etiología , Proteínas Bacterianas/aislamiento & purificación , Cólera/complicaciones , Cólera/microbiología , Femenino , Islas Genómicas , Humanos , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Vibrio cholerae/aislamiento & purificación , Vibrio cholerae/patogenicidad , Vibrio cholerae no O1/aislamiento & purificación , Vibrio cholerae no O1/patogenicidad , Virulencia
16.
Rev. chil. infectol ; 36(3): 392-395, jun. 2019. tab, graf
Artículo en Español | LILACS | ID: biblio-1013799

RESUMEN

Resumen Presentamos un caso de bacteriemia por Vibrio cholerae no-O1/ no-O139 en una mujer de 81 años con un cuadro de dolor abdominal, fiebre, vómitos, diarrea, coluria e ictericia, mientras visitaba una zona rural sin acceso a agua potable. La identificación se realizó por la técnica de espectrometría de masa MALDI-TOF, confirmándose una cepa no toxigénica no-O1/no-139. La caracterización molecular del aislado demostró la ausencia del gen de la toxina del cólera (CTX), y pilus TCP; sin embargo, presentó cinco de los seis genes de virulencia presentes en la isla de patogenicidad homóloga denominada VPaI-7 del V. parahaemolyticus (vcs N2+, vcs C2+, vcs V2+,toxR-, vspD+, T vopF+). Además, el aislado presentó los genes de virulencia hylA y rtxA. Este es el primer caso reportado en Chile de una cepa clínica de V. cholerae no-O1, no-O139 aislada de hemocultivos portador de un segmento homólogo de la isla de patogenicidad denominada VPaI-7 de V. parahaemolyticus, el cual codifica para un sistema de secreción tipo III (TTSS), que probablemente contribuye a su virulencia.


We report a case of V. cholerae non-O1 / non-O139 bacteremia in an 81-year-old woman with abdominal pain, fever, vomiting, liquid stools, choluria and jaundice, while visiting a rural area without access to potable water. The identification was made by the MALDI-TOF mass spectrometry technique and subsequently the non-toxigenic non-O1 / non-139 strain was confirmed in the national reference laboratory. The molecular characterization demonstrated the absence of the cholera toxin gene (CTX), and the TCP pilus, however, presented 5 of 6 virulence genes present in an island of homologous pathogenicity named VPaI-7 of V. parahaemolyticus (vcs N2 +, vcs C2 +, vcs V2 +, toxR-, vspD +, T vopF +) and in addition it was positive for hylAy rtxA virulence genes recognized outside the island. This is the first case reported in Chile of a clinical strain of V. cholerae non-O1, non-O139 isolated from blood culture that carries in its genome a homologous segment of the pathogenicity island named VPaI-7 of V. parahaemolyticus, which codifies for a type III secretion system (TTSS) that probably contributes to his virulence.


Asunto(s)
Humanos , Femenino , Anciano de 80 o más Años , Proteínas Bacterianas/química , Vibrio cholerae/química , Bacteriemia/etiología , Vibrio cholerae no O1/química , Proteínas Bacterianas/aislamiento & purificación , Vibrio cholerae/aislamiento & purificación , Vibrio cholerae/patogenicidad , Virulencia , Cólera/complicaciones , Cólera/microbiología , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Vibrio cholerae no O1/aislamiento & purificación , Vibrio cholerae no O1/patogenicidad , Islas Genómicas
17.
Rev Gastroenterol Peru ; 38(3): 301-305, 2018.
Artículo en Español | MEDLINE | ID: mdl-30540737

RESUMEN

Non-O1, non-O139 Vibrio cholerae (NOVC) strains are an uncommon cause of gastroenteritis. However, they have been recently associated with severe extraintestinal infections in immunocompromised hosts. Among them, bacteremia in cirrhotic patients is noteworthy. We present the case of a 58-year-old woman with cirrhosis that developed septic shock, multiple organ failure and died four days after admission. Blood cultures yielded Gram-negative rods identified as Vibrio cholerae. Further serogrouping by slide agglutination and a negative PCR for ctxA gen confirmed the strain to be NOVC. Antimicrobial susceptibility testing showed sensitivity to ampicillin, chloramphenicol, tetracycline and ciprofloxacin; and resistance to trimethoprim-sulfamethoxazole. To the best of our knowledge, this is first report in Peru, described in the Hospital Nacional Dos de Mayo, of NOVC bacteremia.


Asunto(s)
Bacteriemia/microbiología , Cólera/microbiología , Cirrosis Hepática/complicaciones , Vibrio cholerae O139/aislamiento & purificación , Vibrio cholerae no O1/aislamiento & purificación , Bacteriemia/epidemiología , Cólera/complicaciones , Cólera/epidemiología , Susceptibilidad a Enfermedades , Farmacorresistencia Bacteriana Múltiple , Resultado Fatal , Femenino , Humanos , Persona de Mediana Edad , Insuficiencia Multiorgánica/etiología , Úlcera Péptica Hemorrágica/complicaciones , Perú/epidemiología , Serotipificación , Choque Séptico/etiología
18.
Nat Rev Dis Primers ; 4(1): 8, 2018 07 12.
Artículo en Inglés | MEDLINE | ID: mdl-30002421

RESUMEN

Vibrio is a genus of ubiquitous bacteria found in a wide variety of aquatic and marine habitats; of the >100 described Vibrio spp., ~12 cause infections in humans. Vibrio cholerae can cause cholera, a severe diarrhoeal disease that can be quickly fatal if untreated and is typically transmitted via contaminated water and person-to-person contact. Non-cholera Vibrio spp. (for example, Vibrio parahaemolyticus, Vibrio alginolyticus and Vibrio vulnificus) cause vibriosis - infections normally acquired through exposure to sea water or through consumption of raw or undercooked contaminated seafood. Non-cholera bacteria can lead to several clinical manifestations, most commonly mild, self-limiting gastroenteritis, with the exception of V. vulnificus, an opportunistic pathogen with a high mortality that causes wound infections that can rapidly lead to septicaemia. Treatment for Vibrio spp. infection largely depends on the causative pathogen: for example, rehydration therapy for V. cholerae infection and debridement of infected tissues for V. vulnificus-associated wound infections, with antibiotic therapy for severe cholera and systemic infections. Although cholera is preventable and effective oral cholera vaccines are available, outbreaks can be triggered by natural or man-made events that contaminate drinking water or compromise access to safe water and sanitation. The incidence of vibriosis is rising, perhaps owing in part to the spread of Vibrio spp. favoured by climate change and rising sea water temperature.


Asunto(s)
Vibriosis/fisiopatología , Vibriosis/terapia , Antibacterianos/uso terapéutico , Cólera/complicaciones , Cólera/fisiopatología , Cólera/terapia , Vacunas contra el Cólera/uso terapéutico , Fluidoterapia/métodos , Humanos , Calidad de Vida/psicología , Oligoelementos/uso terapéutico , Vibrio/patogenicidad , Vibrio/virología , Vibriosis/complicaciones , Vibrio cholerae/patogenicidad , Vibrio cholerae/virología , Vibrio parahaemolyticus/patogenicidad , Vibrio parahaemolyticus/virología , Vibrio vulnificus/patogenicidad , Vibrio vulnificus/virología , Zinc/uso terapéutico
19.
Rev. gastroenterol. Perú ; 38(3): 301-309, jul.-set. 2018. tab
Artículo en Español | LILACS | ID: biblio-1014100

RESUMEN

Vibrio cholerae serogrupo NO-O1/NO-O139 (VCNO) es causa infrecuente de gastroenteritis. Sin embargo, se le asocia a infección extra-intestinal severa en huéspedes inmunocomprometidos, y entre ellas, la bacteremia en pacientes con cirrosis hepática es digna de mención. A continuación, presentamos el caso de una mujer de 58 años, con el diagnóstico de cirrosis hepática de fondo, que desarrolló progresivamente choque séptico, disfunción orgánica múltiple y desenlace fatal al cuarto día de su admisión. Los resultados obtenidos post mortem, de los hemocultivos previamente tomados, aislaron bacilos gram negativos compatibles con Vibrio cholerae. Posteriormente, se identificó el serogrupo NO-O1/NO-O139, a través de aglutinación en placa y PCR negativo para el gen ctxA. El antibiograma mostró susceptibilidad conservada a ampicilina, cloranfenicol, tetraciclina y ciprofloxacino, con resistencia al trimetoprim-sulfametoxazol. El presente caso, descrito en el Hospital Nacional Dos de Mayo, es hasta la fecha, el primer reporte de bacteremia VCNO en el Perú.


Non-O1, non-O139 Vibrio cholerae (NOVC) strains are an uncommon cause of gastroenteritis. However, they have been recently associated with severe extraintestinal infections in immunocompromised hosts. Among them, bacteremia in cirrhotic patients is noteworthy. We present the case of a 58-year-old woman with cirrhosis that developed septic shock, multiple organ failure and died four days after admission. Blood cultures yielded Gram-negative rods identified as Vibrio cholerae. Further serogrouping by slide agglutination and a negative PCR for ctxA gen confirmed the strain to be NOVC. Antimicrobial susceptibility testing showed sensitivity to ampicillin, chloramphenicol, tetracycline and ciprofloxacin; and resistance to trimethoprim-sulfamethoxazole. To the best of our knowledge, this is first report in Peru, described in the Hospital Nacional Dos de Mayo, of NOVC bacteremia.


Asunto(s)
Femenino , Humanos , Persona de Mediana Edad , Cólera/microbiología , Bacteriemia/microbiología , Vibrio cholerae O139/aislamiento & purificación , Vibrio cholerae no O1/aislamiento & purificación , Cirrosis Hepática/complicaciones , Perú/epidemiología , Choque Séptico/etiología , Serotipificación , Úlcera Péptica Hemorrágica/complicaciones , Cólera/complicaciones , Cólera/epidemiología , Bacteriemia/epidemiología , Resultado Fatal , Farmacorresistencia Bacteriana Múltiple , Susceptibilidad a Enfermedades , Insuficiencia Multiorgánica/etiología
20.
Ann Biol Clin (Paris) ; 76(1): 107-110, 2018 01 01.
Artículo en Francés | MEDLINE | ID: mdl-29313493

RESUMEN

This is a case report about a 54-year-old man with hypovolemic shock, due to diarrhea and major vomiting after his return from India. The isolation of Vibrio cholerae serogroup O1 (Ogawa serotype) explains this typical clinical presentation of cholera, seen in 10% of cholera cases only. The patient had co-infection with Vibrio cholerae and Campylobacter coli. Co-infections appear to be frequent in endemic areas. The purpose of this case report is to recall the relevance of Vibrio isolation when the clinical context is evocative (diarrhea on travel return, raw sea food consumption).


Asunto(s)
Cólera/diagnóstico , Enfermedad Relacionada con los Viajes , Infecciones por Campylobacter/complicaciones , Infecciones por Campylobacter/diagnóstico , Infecciones por Campylobacter/microbiología , Campylobacter coli/aislamiento & purificación , Cólera/complicaciones , Cólera/microbiología , Coinfección , Diarrea/diagnóstico , Diarrea/microbiología , Francia , Humanos , India , Masculino , Persona de Mediana Edad , Viaje , Vibrio cholerae/aislamiento & purificación
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