scholarly journals Phagoburst Response Level of Neutrophils to Septic and Non-Septic Acinetobacter baumannii Isolates

2021 ◽  
Vol 15 (1) ◽  
pp. 16-25
Author(s):  
Layla S El Khatib ◽  
Muhannad A Yacoub ◽  
Salwa M Bdour ◽  
Asem A Shehabi
Keyword(s):  
Escherichia Coli ◽  
Acinetobacter Baumannii ◽  
Myeloid Leukemia ◽  
Immune Status ◽  
Opportunistic Pathogen ◽  
Response Level ◽  
Immunocompetent Individual ◽  
Significant Difference ◽  
Different Types ◽  
Chemotherapy Regime

Background: Acinetobacter baumannii is an opportunistic pathogen causing community-acquired and nosocomial infections. Dissemination of infection to blood causes septicemia associated with serious morbidity and mortality of patients. Neutrophils are essential for the control of A. baumannii infections by different mechanisms, including oxidative burst. Aims: This study was conducted as an attempt to determine the effect of septicemic and non-septicemic A. baumannii isolates on the phagoburst response of neutrophils. Methods: Neutrophils were isolated from an immunocompetent individual; chronic myeloid leukemia (CML) and lung solid tumor (ST) patients. The phagoburst response of these neutrophils to various strains of A. baumannii isolated from septic and non-septic patients was investigated by flow cytometer. Results: The presence of this pathogen lowered the phagoburst response in the different types of neutrophils compared to their response to the opsonized Escherichia coli. The phagoburst response of the neutrophils from the immunocompetent individual was significantly higher than that of neutrophils from the immunodeficient patients when stimulated by the septicemic or nonsepticemic A. baumannii isolates. The isolate type (septicemic or non-septicemic) had no significant effect on the neutrophil phagoburst response of the immunocompetent individual and a significant effect on the phagoburst response of neutrophils from the immunodeficient patients. The phagoburst response of the neutrophils from the immunodeficient patients stimulated by septicemic A. baumannii isolates was significantly lower than that when neutrophils stimulated by the nonsepticemic isolates. Also, there was a significant difference in the phagoburst response of neutrophils from the CML and ST patients when stimulated by the septicemic and non-septicemic isolates. This observation might be due to the combined effect of virulent A. baumannii isolates and the chemotherapy regime the patient was undertaking. Conclusion: The results suggest that both the isolate type and the source of neutrophils have a significant effect on the neutrophil phagoburst response. The potential virulence of the septicemic A. baumannii isolates and dissemination to blood may be dependent on the host’s immune status and the neutrophils phagoburst response.

scholarly journals REVIEWOF ACINETOBACTER BAUMANNII: TAXONOMY, EPIDEMIOLOGY, PATHOGENICITY, AND ANTIMICROBIAL RESISTANCE

2021 ◽  
Vol 03 (03) ◽  
pp. 18-24
Author(s):  
Khalida J. IBRAHEEM ◽  
Mohammed S. BAQER
Keyword(s):  
Acinetobacter Baumannii ◽  
The Elderly ◽  
Opportunistic Pathogen ◽  
Health Care Facilities ◽  
Multi Drug Resistance ◽  
Medical Field ◽  
Death Rates ◽  
Care Facilities ◽  
Different Types ◽  
Hospital Acquired

The genus Acinetobacter are a wide spread in nature, and there are at least 25 different types of them .In the medical field, Acinetobacter baumannii is one of the most important speciesof this genus . It is an opportunistic pathogen and have many virulence factors that make the bacteria capable of causing many hospital-acquired diseases which leads to nosocomial outbreak attendant with arise in death rates . This bacteria has the ability to be resistant to many antibiotics, and the emergence of high levels of multi-drug resistance A. baumannii has made it apriority health issue and is considered a serious threat to health care facilities, public health and the elderly . Which requires a tremendous effort to stop this escalation.

scholarly journals OXA-type carbapenemases in Acinetobacter baumannii in South America

2011 ◽  
Vol 6 (04) ◽  
pp. 311-316 ◽  
Author(s):  
Andrés Opazo ◽  
Mariana Domínguez ◽  
Helia Bello ◽  
Sebastian G.B. Amyes ◽  
Gerardo González-Rocha
Keyword(s):  
Intensive Care ◽  
South America ◽  
Acinetobacter Baumannii ◽  
Carbapenem Resistance ◽  
Opportunistic Pathogen ◽  
Class D ◽  
Different Types ◽  
Special Mention ◽  
Therapeutic Alternatives

Acinetobacter baumannii is an opportunistic pathogen that is frequently involved in outbreaks of infection, occurring mostly in intensive care units. The increasing incidence of carbapenem resistance in A. baumannii worldwide is a concern since it limits drastically the range of therapeutic alternatives. The most important mechanism of carbapenem resistance is the enzymatic hydrolysis mediated by carbapenemases. In A. baumannii these enzymes are usually OXA-type carbapenemases, and belong to class D according to the classification of Ambler. The OXA-type carbapenemases are divided into five subgroups, four of which correspond to acquired carbapenemases, which accounts for the distribution of genes blaOXA in different geographic areas. In this work we review the different types of OXA-type carbapenemases present in A. baumannii, emphasizing the current situation in South America with special mention to the findings in Chile.

Some Cytokines Levels (IL-6 and IL-10) in Sera Patients with Cutaneous Leismanasis in Nassiriya Province

2020 ◽  
pp. 4-6
Keyword(s):  
Serum Level ◽  
Immune Status ◽  
Pure Science ◽  
Control Subjects ◽  
Significant Difference ◽  
Healthy Control

The present study was carried out in the Labs of collage of education for pure science, during period from January 2017 to endDecember of the same year. The immune status investigates for CLpatients by measuring the levels of cytokines (IL6and IL10) in sera using a technique enzyme-linked immune Sorbent adsorptive (ELISA). The study included 120 subjects with (60 CLpatientsL.majar and 60 CLpatients L. tropica with and (30) were healthy control. Increased mean Serum level of IL6 was in the observed in the total patients as compared to control Subjects (224.53pg/ml,70.70pg/ml), the result indicate there was significant difference at (p<0.05) ,such observation was consistent in the patient infected with L.majar and L. tropica (104 .90 pg/ml and 112.78 pg/ml) respectively. The results of the IL10 showed significant difference at (p<0.05)increased of mean Serum level in the total CL patients as compared to control Subjects(226.90 pg/ml 46.77pg/ml,).Ahighly significant difference at (p<0.05) increased observed in patients group infected with L.majar and followed by patients group infected L. tropica (112.78pg/ml and 114.12pg/ml) respectively.These results revealed that the excessive presence of cytokines might play a role in CL patients.

Análise da eficácia da higiene oral de pacientes internados em unidade de terapia intensiva em um hospital de alta complexidade do sul do Brasil

2019 ◽  
Vol 31 (2) ◽  
pp. 134
Author(s):  
Karoline Cândido Francisco Teixeira ◽  
Luana Moretti dos Santos ◽  
Fabiano Goulart Azambuja
Keyword(s):  
Escherichia Coli ◽  
Klebsiella Pneumoniae ◽  
Acinetobacter Baumannii ◽  
Terapia Intensiva

Introdução: As infecções orais, na Unidade de Terapia Intensiva (UTI), deveriam ser preocupações constantes dos profissionais da área da Saúde ali inseridos, devido às consequências que podem causar na saúde geral dos pacientes debilitados sistemicamente. A criação de um protocolo padrão de higiene oral é de suma importância para impedir ou tratar tais infecções, o que possibilita ao paciente conforto e qualidade de vida, devendo ser realizada por profissionais qualificados. Métodos: Foi realizado um estudo transversal e descritivo, cuja análise foi descritiva e se desenvolveu na Unidade de Terapia Intensiva de um hospital de alta complexidade no Sul do Brasil, no período de fevereiro de 2016 a fevereiro de 2017. A amostra total foi composta por 35 pacientes, com idade mínima de 18 anos, que estavam internados na UTI do referido hospital, portadores de prontuários e Termo de Consentimento Livre e Esclarecido. Resultados: Dentre os microrganismos achados nos exames laboratoriais dos pacientes, apresentaram-se em maior quantidade Klebsiella pneumoniae, Staphylococcus coagulase negativo e Escherichia coli. Apenas dois pacientes adquiriram o Acinetobacter baumannii. A maioria dos pacientes obtiveram bactérias gram-negativas presentes em sua microbiota oral. Conclusões: As bactérias patogênicas presentes no meio oral devem ser tratadas e erradicadas. Isso pode ser alcançado por meio de um protocolo padrão de higiene oral. A participação da Odontologia na equipe multidisciplinar no ambiente hospitalar é de fundamental importância para a indicação da terapêutica adequada.

Households Discrimination in School Enrolment in Pakistan: Does gender matter?

2018 ◽  
Vol 2 (1) ◽  
pp. 29-36
Author(s):  
Ali Muhammad ◽  
Zahoor Ul Haq ◽  
Imad Khan
Keyword(s):  
Low Income ◽  
Gender Discrimination ◽  
Rural Areas ◽  
Gender Disparity ◽  
School Enrollment ◽  
Female Education ◽  
Public And Private ◽  
Significant Difference ◽  
Different Types ◽  
Socio Economic Factors

This study uses Pakistan Social and Living Measurement Survey 2016 to study gender discrimination in school enrollment across the four provinces of Pakistan using bi-variate analysis. Results show that there is highly significant difference between male and female education in rural areas (x^2=4940.50 and p<0.05). Analysis indicate that gender disparity in enrollment is significantly higher in low income households (x^2=115.468 and P<0.05). The study also showed that as compared to male, fewer female are enrolled in both public and private sectors. Hence, socio-economic factors play important role in making decision about children enrollment in different types of school. The study recommends that government to take appropriate steps to reduce gender discrimination in school enrollment by offering subsidy on female education in the country.

Using Histological and Chemical Methods for Detection of Unauthorized Tissues Addition in Emulsion Type Meat Product

2020 ◽  
Keyword(s):  
Vascular Tissue ◽  
Meat Product ◽  
Calcium Content ◽  
Processed Meat ◽  
Low Protein ◽  
Significant Difference ◽  
Different Types ◽  
Plant Stem ◽  
High Level ◽  
Reliable Methods

Total twenty different processed meat plant producing emulsion type sausage were histologically and chemically examined for detection of adulteration with unauthorized tissues. Results revealed that samples were adulterated with different types of animal tissues included; hyaline cartilage, tendon, spongy bone, peripheral nerve trunk, basophilic matrix, lymphatic tissue, fascia, fibrocartilage and vascular tissue. Moreover, these samples were adulterated Also, adulterated with plant tissue included; plant stem, leaves and root. Chemical analysis showed a significant difference in their chemical composition (moisture, fat, protein, ash and calcium) content. Moisture and fat content varied around the permissible limit of E.S.S. while low protein, high ash and calcium content was detected in the examined samples. Therefore, Histological and chemical examinations can be used as reliable methods to detect adultration using unauthorized addition of both animal and plant tissues in processed meat product samples which revealed a high level of falsification.

In silico Defining the Repeat-containing Proteins in the Acinetobacter baumannii Proteome, a Great Reservoir of Templates for Synthetic Biology

2019 ◽  
Vol 13 (2) ◽  
pp. 149-158
Author(s):  
Mohammad Reza Rahbar ◽  
Mahboubeh Zarei ◽  
Navid Nezafat ◽  
Manica Negahdaripour ◽  
Younes Ghasemi
Keyword(s):  
Acinetobacter Baumannii ◽  
Drug Targets ◽  
Closely Related Species ◽  
Great Ability ◽  
Repeat Proteins ◽  
Significant Difference ◽  
Biological Determinants ◽  
Tandem Repeat Proteins ◽  
Diagnostic Approaches ◽  
Novel Therapeutic

Background: Acinetobacter baumannii is an important nosocomial pathogen with great ability to resist antibiotics. Tandem repeat proteins, abundant in prokaryotic proteomes, attract attention due to their role in virulence and various biological processes. Defining repeat- containing proteins may pave the way to find novel therapeutic targets as well as vaccine candidate and give pieces of evidence of mechanisms of evolution and adaptation of organisms to various environmental conditions. Objective: In the present study, we employed bioinformatics tools to define repeatcontaining proteins within A. baumannii proteome for emphasizing the existence of natural sources for synthesizing novel therapeutic and diagnosis material. Results: We defined various kinds of repeat modules in a number of proteins and compared the abundance of these proteins in some closely related species. No significant difference was observed in the count of repeat-containing proteins in different species. But the existence of some important virulence factors is mentionable in our screening. Conclusion: Repeat containing proteins are important biological determinants of A. baumannii and are well worth researching for finding drug targets and vaccine candidates. These proteins can be served as a template for designing and synthesizing peptides for therapeutic and diagnostic approaches.

scholarly journals A TTP-incorporated scoring model for predicting mortality of solid tumor patients with bloodstream infection caused by Escherichia coli

2021 ◽  
Author(s):  
Qing Zhang ◽  
Hao-Yang Gao ◽  
Ding Li ◽  
Chang-Sen Bai ◽  
Zheng Li ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
High Risk ◽  
Bloodstream Infection ◽  
Solid Tumor ◽  
Prognostic Scores ◽  
Risk Scores ◽  
Youden Index ◽  
Tumor Patients ◽  
Scoring Model ◽  
Significant Difference

Abstract Background Few mortality-scoring models are available for solid tumor patients who are predisposed to develop Escherichia coli–caused bloodstream infection (ECBSI). We aimed to develop a mortality-scoring model by using information from blood culture time to positivity (TTP) and other clinical variables. Methods A cohort of solid tumor patients who were admitted to hospital with ECBSI and received empirical antimicrobial therapy was enrolled. Survivors and non-survivors were compared to identify the risk factors of in-hospital mortality. Univariable and multivariable regression analyses were adopted to identify the mortality-associated predictors. Risk scores were assigned by weighting the regression coefficients with corresponding natural logarithm of the odds ratio for each predictor. Results Solid tumor patients with ECBSI were distributed in the development and validation groups, respectively. Six mortality-associated predictors were identified and included in the scoring model: acute respiratory distress (ARDS), TTP ≤ 8 h, inappropriate antibiotic therapy, blood transfusion, fever ≥ 39 °C, and metastasis. Prognostic scores were categorized into three groups that predicted mortality: low risk (< 10% mortality, 0–1 points), medium risk (10–20% mortality, 2 points), and high risk (> 20% mortality, ≥ 3 points). The TTP-incorporated scoring model showed excellent discrimination and calibration for both groups, with AUC being 0.833 vs 0.844, respectively, and no significant difference in the Hosmer–Lemeshow test (6.709, P = 0.48) and the chi-square test (6.993, P = 0.46). Youden index showed the best cutoff value of ≥ 3 with 76.11% sensitivity and 79.29% specificity. TTP-incorporated scoring model had higher AUC than no TTP-incorporated model (0.837 vs 0.817, P < 0.01). Conclusions Our TTP-incorporated scoring model was associated with improving capability in predicting ECBSI-related mortality. It can be a practical tool for clinicians to identify and manage bacteremic solid tumor patients with high risk of mortality.

scholarly journals Acinetobacter baumannii Infections in Hospitalized Patients, Treatment Outcomes

Antibiotics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 630
Author(s):  
Diaa Alrahmany ◽  
Ahmed F. Omar ◽  
Gehan Harb ◽  
Wasim S. El El Nekidy ◽  
Islam M. Ghazi
Keyword(s):  
Acinetobacter Baumannii ◽  
Treatment Outcomes ◽  
Antibiotic Treatment ◽  
Financial Burden ◽  
Opportunistic Pathogen ◽  
Hospitalized Patients ◽  
Treatment Regimens ◽  
Serious Infections ◽  
Optimal Approach ◽  
Selection Of

Background Acinetobacter baumannii (AB), an opportunistic pathogen, could develop into serious infections with high mortality and financial burden. The debate surrounding the selection of effective antibiotic treatment necessitates studies to define the optimal approach. This study aims to compare the clinical outcomes of commonly used treatment regimens in hospitalized patients

scholarly journals The clinical profile, management, and outcome of febrile neutropenia in acute myeloid leukemia from resource constraint settings

2021 ◽  
Vol 8 ◽  
pp. 204993612110365
Author(s):  
Kundan Mishra ◽  
Suman Kumar ◽  
Sandeep Ninawe ◽  
Rajat Bahl ◽  
Ashok Meshram ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Febrile Neutropenia ◽  
Burkholderia Cepacia ◽  
Myeloid Leukemia ◽  
Tertiary Care ◽  
Care Hospital ◽  
Significant Difference ◽  
The Mean ◽  
Acute Myeloid

Introduction: Acute myeloid leukemia (AML) is the commonest leukemia in adults. Mortality in thew first 30-days ranges from 6% to 43%, while infections account for 30–66% of early deaths. We aim to present our experience of infections in newly-diagnosed AML. Method: This prospective, observational study, was undertaken at a tertiary care hospital in Northern India. Patients with confirmed AML (bone marrow morphology and flow cytometry) and who had developed febrile neutropenia (FN), were included. Result: A total of fifty-five patients were included in the study. The median age of the patients was 47.1 years (12–71) and 28 (50.9%) were males. Fever (33, 60%) was the commonest presentation at the time of diagnosis. One or more comorbid conditions were present in 20 patients (36.36%). Infection at presentation was detected in 17 patients (30.9%). The mean duration to develop febrile neutropenia since the start of therapy was 11.24 days. With each ten-thousand increase in white blood cell (WBC) count, the mean number of days of FN development decreased by 0.35 days ( p = 0.029). Clinical and/or radiological localization was possible in 23 patients (41.81%). Thirty-four blood samples (34/242, 14.04%) from 26 patients (26/55, 47.3%) isolated one or more organisms. Gram negative bacilli (GNB) were isolated in 24 (70.58%) samples. Burkholderia cepacia (8/34, 23.52%) was the commonest organism. The number of days required to develop febrile neutropenia was inversely associated with overall survival (OS). However, when compared, there was no statistically significant difference in OS between patients developing fever on day-10 and day-25 ( p = 0.063). Thirteen patients (23.63%) died during the study period. Discussion: Low percentage of blood culture positivity and high incidence of MDR organisms are a matter of concern. Days to develop febrile neutropenia were inversely associated with overall survival (OS), emphasizing the importance of preventive measures against infections. Conclusion: Infections continues to be a major cause of morbidity and mortality among AML patients.

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