scholarly journals Isolation and Identification of Aerobic Bacterial Pathogens from Blood Culture of Cancer Patients in Al-Zara Hospital in Khartoum, Sudan

2021 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Areeg Abd-Alaziz Alnoor Mohammed ◽  
◽  
Babbiker Mohammed Taher Gorish ◽  

Patients with cancer are particularly under risk of many microbial infections and even septicaemia due to the weakened immune system induced by Chemotherapy. This study was done to identify and isolate aerobic bacterial septicaemic pathogens among cancer patients. This study was performed in Radiation and Isotopes national Centre of Khartoum Hospital (previously Alzarra) during the period from September to November 2019. One Hundred Fifty blood samples were collected from cancer patients suspected to have septicemia. All samples where inculated in blood culture media and incubated aerobically. Upon detection of growth signs the bacterial isolates were subcultured and identified according to the Standard known procedure. Antimicrobial sensitivity test was done following CLSI guidelines, The study showed that Twenty two (14%) of the investigated samples were showed growth signs, while One hundred Twenty eight (86%) were showed no growth. After subculture on Blood agar, MacConky agar and Chocolate agar, all isolated pathogens were subjected to essential bacteriological biochemical tests and identified as E.coli (57.1%) , Klebsiella pneumonia (19%) ,Staphylococcus aureus( 9.5%), Pseudomonas aeruginosa (4.8%) . Citrobacter Spp (4.8%) and Streptococcus pyogens (4.8%). Septicaemia in patients with cancer was mainly caused by E.coli in patients using chemotherapy. Further study with inclusion of more sample size and focusing on multidrug resistant isolates is essential to verify the current study results.

2019 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Areeg Abd-Alaziz Alnoor Mohammed ◽  
◽  
Babbiker Mohammed Taher Gorish ◽  

Patients with cancer are particularly under risk of many microbial infections and even septicaemia due to the weakened immune system induced by Chemotherapy. This study was done to identify and isolate aerobic bacterial septicaemic pathogens among cancer patients. This study was performed in Radiation and Isotopes national Centre of Khartoum Hospital (previously Alzarra) during the period from September to November 2019. One Hundred Fifty blood samples were collected from cancer patients suspected to have septicemia. All samples where inculated in blood culture media and incubated aerobically. Upon detection of growth signs the bacterial isolates were subcultured and identified according to the Standard known procedure. Antimicrobial sensitivity test was done following CLSI guidelines, The study showed that Twenty two (14%) of the investigated samples were showed growth signs, while One hundred Twenty eight (86%) were showed no growth. After subculture on Blood agar, MacConky agar and Chocolate agar, all isolated pathogens were subjected to essential bacteriological biochemical tests and identified as E.coli (57.1%) , Klebsiella pneumonia (19%) ,Staphylococcus aureus( 9.5%), Pseudomonas aeruginosa (4.8%) . Citrobacter Spp (4.8%) and Streptococcus pyogens (4.8%). Septicaemia in patients with cancer was mainly caused by E.coli in patients using chemotherapy. Further study with inclusion of more sample size and focusing on multidrug resistant isolates is essential to verify the current study results.


2017 ◽  
Vol 14 (2) ◽  
pp. 277-282 ◽  
Author(s):  
M. A. Islam ◽  
S. M. L. Kabir ◽  
M. T. Rahman

The study was intended for molecular detection of S. aureus isolated from raw cow’s milk. A total of 20 milk samples were collected from different upazila markets of Jamalpur, Tangail, Kishoreganj and Netrokona districts of Bangladesh. Milk samples were cultured onto various culture media for the isolation of bacteria. The isolated bacteria were identified by studying cultural properties on different selective media, biochemical tests, and finally by PCR. Out of 20 samples, 15 (75%) milk samples were found to be positive for S. aureus. S. aureus specific 16S rRNA gene was amplified from all isolates and identified as S. aureus. Antimicrobial sensitivity test was carried out to ascertain the susceptibility of the organism to various antibiotics. Its results showed that the S. aureus isolates were resistant to amoxicillin (100%), erythromycin (73.33%) and tetracycline (73.33%) but sensitive to azithromycin (93.33%), ciprofloxacin (93.33%), gentamicin (100%), norfloxacin (86.67%) and streptomycin (86.67%).


Author(s):  
Bassey Ewa Ekeng ◽  
Ubleni Ettah Emanghe ◽  
Bernard Ekpan Monjol ◽  
Anthony Achizie Iwuafor ◽  
Ernest Afu Ochang ◽  
...  

Aim: Bloodstream infections are a major cause of morbidity and mortality worldwide. The prevalence of causative microorganisms varies from one geographical region to another. This study was aimed at determining the etiological agents prevalent in our environment and their susceptibility profile. Study design: This is a retrospective study carried out at the University of Calabar Teaching Hospital, Calabar, Nigeria. Methodology: Blood culture results of patients documented over a two-year period were retrieved and analyzed. Blood culture positive isolates were detected using conventional method and Oxoid signal blood culture systems. Antimicrobial sensitivity tests were carried out by Kirby-Bauer disc diffusion method. Methicillin resistance in Staphylococcus aureus and coagulase negative Staphylococcus species (CoNS) was detected by disk diffusion method using 30 µg cefoxitin disk. ESBL production was detected by phenotypic confirmatory disc diffusion test (PCDDT) and the double disc synergy test (DDST). Results: A total of 413 blood culture antimicrobial susceptibility test results were analyzed, of which 116 (28.09%) were identified as culture positive. Sixty-nine (59%) of the positive isolates were from female patients. Out of 116 positive cultures, 58.62% (68/116) were Gram positive organisms, 40.52% (47/116) were Gram negative organisms, non albicans Candida accounted for 0.86% (1/116).  Staphylococcus aureus (n=41, 35.3%) was the predominant isolate and showed high sensitivity to levofloxacin (100%), Linezolid (100%) and Amikacin (100%). Twelve isolates of S. aureus were methicillin resistant, while 1 isolate was inducible clindamycin resistant. Of the 116 isolates identified in this study, forty-three (43) were multidrug resistant with highest number of multidrug resistant isolates from Staphylococcus aureus (n=20). 21.28% (n=10) of the Gram-negative isolates were positive for extended spectrum beta lactamases. Conclusion: A high rate of antimicrobial resistance is observed among microorganisms causing blood stream infections. This emphasizes the need for antimicrobial sensitivity testing in the management of blood stream infections.


2019 ◽  
Author(s):  
FRANK CHINOWAITA ◽  
Wendy Chaka ◽  
Tinashe K Nyazika ◽  
Tendai C Maboreke ◽  
Inam Chitsike ◽  
...  

Abstract Introduction: Cancer and sepsis comorbidity is a major public health problem in most parts of the world including Zimbabwe. The microbial aetiologies of sepsis and their antibiograms vary with time and locations. Knowledge on local microbial aetiologies of sepsis and their susceptibility patterns is critical in guiding empirical antimicrobial treatment choices. Methods: This was a descriptive cross sectional study which determined the microbial aetiologies of sepsis from blood cultures of paediatric and adult cancer patients obtained between July 2016 and June 2017. The TDR-X120 blood culture system and TDR 300B auto identification machine were used for incubation of blood culture bottles and identification plus antimicrobial susceptibility testing, respectively. Results: A total of 142 participants were enrolled; 50 (35.2%) had positive blood cultures with 56.0% gram positive, 42.0% gram negative bacteria and 2.0% yeast isolates. Most common isolates were Coagulase Negative Staphylococcus (CoNS) (22.0%), Escherichia coli (16.0%), Klebsiella pneumoniae (14.0%), Enterococcus faecalis (14.0%) and Staphylococcus aureus (8.0%) in all cancer patients. These isolates were similar in both haematological and solid cancers. Amikacin and meropenem showed 85.7% and 95.2% activity respectively against all gram negative isolates while vancomycin and linezolid were effective against 96.2% and 100.0% of all gram positive isolates respectively. Ten (66.7%) isolates of E. coli and K. pneumoniae were extended spectrum β-lactamase (ESBL) positive and the same proportion was observed on methicillin resistance among Staphylococcus species. Conclusions: The major microbial aetiologies of sepsis among patients with cancer in Zimbabwe were CoNS, E. coli, K. pneumoniae, E. faecalis and S. aureus. Most isolates were resistant to commonly used empirical antibiotics and there was high level of ESBL and methicillin resistance carriage. A nationwide survey on microbial aetiologies of sepsis and their susceptibility patterns would assist in the guidance of effective sepsis empiric antimicrobial treatment among patients with cancer.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e20730-e20730
Author(s):  
H. M. Ashour ◽  
A. El-Sharif

e20730 Background: Nosocomial infections pose significant threats to hospitalized patients, especially the immunocompromised ones, such as cancer patients. Methods: This study examined the microbial spectrum of gram-negative bacteria in various infection sites in patients with leukemia and solid tumors. The antimicrobial resistance patterns of the isolated bacteria were studied. Results: The most frequently isolated gram-negative bacteria were Klebsiella pneumonia (31.2%) followed by Escherichia coli (22.2%). We report the first-time isolation and identification of a number of less-frequent gram negative bacteria (Chromobacterium violacum, Burkholderia cepacia, Kluyvera ascorbata, Stenotrophomonas maltophilia, Yersinia pseudotuberculosis, and Salmonella arizona). Most of the gram-negative isolates from RTI, GITI, UTI, and BSI were obtained from leukemic patients. All gram-negative isolates from SI were obtained from solid-tumor patients. In both leukemic and solid-tumor patients, gram-negative bacteria causing UTI were mainly Escherichia coli and Klebsiella pneumoniae, while gram-negative bacteria causing RTI were mainly Klebsiella pneumoniae. Escherichia coli was the main gram-negative pathogen causing BSI in solid-tumor patients and GITI in leukemic patients. Isolates of Escherichia coli, Klebsiella, Enterobacter, Pseudomonas, and Acinetobacter species were resistant to most antibiotics tested. There was significant imipenem-resistance in Acinetobacter (40.9%), Pseudomonas (40%), and Enterobacter (22.2%) species, and noticeable imipinem-resistance in Klebsiella (13.9%) and Escherichia coli (8%). Conclusions: This is the first study to report the evolution of imipenem-resistant gram-negative strains in Egypt. Mortality rates were higher in cancer patients with nosocomial Pseudomonas infections than any other bacterial infections. Policies restricting antibiotic consumption should be implemented to avoid the evolution of newer generations of antibiotic resistant-pathogens. No significant financial relationships to disclose.


2019 ◽  
Vol 16 (3) ◽  
pp. 611-615
Author(s):  
Mohammad Sharifi ◽  
Nirichan Kunchirman Bipinraj

Candida albicans, a common human commensal, is the leading cause of nosocomial infections due to the emergence of drug resistance. The present study reports the isolation and identification of actinomycetes from mangrove soil and characterization of its antagonistic activity against drug resistant Candida species. Mangrove soils from Khargar, Navi Mumbai were screened for actinomycetes with anti-candida activity. In total, 20 actinomycetes culture were isolated from mangrove soil sample, amongst the culture designated as MB was found to inhibit all tested pathogenic Candida cultures. The isolate MB was identified using biochemical tests and 16S rRNA sequencing as Streptomyces viridocromogenes. MB culture showed maximum activity after incubation period of 48 to 72 h, pH of 6.2 and temperature of 30℃. Partially purified active molecule was found to be inactivated by heat treatment but resisted proteinase K, indicating the compound can be an antibiotic in nature. The study highlights the isolation of Streptomyces viridocromogenes with antagonistic activity against multidrug resistant Candida from mangrove soil. This culture is an ideal candidate for further characterization studies for anti-candida molecules.


2020 ◽  
Author(s):  
Endrias Zewdu Gebremedhin ◽  
Gadisa Hirpa ◽  
Bizunesh Mideksa Borana ◽  
Edilu Jorga Sarba ◽  
Lencho Megersa Marami ◽  
...  

Abstract Background Listeriosis is one of the globally distributed foodborne diseases with the highest fatality rate. Few studies were done on the occurrence of Listeria species from meat at abattoirs, butchers, and restaurants in Ethiopia, and there has been no study conducted at Ambo and Holeta town. The objectives of this study were to isolate and identify Listeria species, assess factors for contamination of meat, and antibiogram of Listeria monocytogenes along the meat chain in Ambo and Holeta towns, Central Ethiopia. Methods 450 meat samples were collected from abattoirs (n = 150), butchers (n = 150) and restaurants (n = 150) for isolation and identification of Listeria species using primary culture and biochemical tests. A questionnaire survey and observational checklist were made to assess the potential risk factors for the occurrence of Listeria species such as factors related to socio-demographic characteristics, knowledge on hygiene and practice of food handlers. Pearson’s Chi-square and logistic regression analyses were used to assess factors contributing for contamination of meat with Listeria species. Kirby Bauer disc diffusion technique was applied to determine the antimicrobial susceptibility profile of Listeria monocytogenes isolates. Results The overall occurrence of Listeria species in both Ambo and Holeta towns was 28.44% (128/450; 95% confidence interval [CI]: 24.32–32.86%). The occurrence of L. monocytogenes was 4.4% (20/450; 95% CI: 2.74–6.78%), L. ivanovii 2.2% (10/450; 95% CI: 1.07–4.04%), L. seeligeri 1.78% (8/450; 95% CI: 0.8–3.47%), L. welshimeri 3.77% (17/450; 95% CI: 2.22–5.98%), L. inoccua 6.22% (28/450; 95% CI: 4.17–8.87%) and L. grayi 10.22% (46/450; 95% CI: 7.58–13.39%). The probability of contamination of meat in butchers and restaurants by the Listeria species were comparatively higher in high altitude (Holeta) than medium altitudes (Ambo) [OR = 4.91; 95% CI: 2.65–9.07%; p < 0.001], in dry than wet season [OR = 8.78; 95% CI: 2.66–28.99%; p < 0.001] and in butchers and restaurant where the employees work ≥ 9 hours per day than those working ≤ 8 hours per day (OR = 3.57; 95% CI:1.74–7.36%; p < 0.001]. Of the 20 Listeria monocytogenes isolates, 16 (80%) were resistant to oxacillin; 14 (70%) were resistant to amikacin and nalidixic acid; 12 (60%) were resistant to chloramphenicol and 11 (55%) were resistant to tetracycline. The L. monocytogenes isolates were 95%, 90% and 85% susceptible to amoxicillin, vancomycin, and clindamycin, respectively. All (100%) Listeria monocytogenes isolates were resistant for two or more drugs. Nineteen (95%) L. monocytogenes isolates were multidrug-resistant. One isolate (5%) had developed resistance to 10 classes of antimicrobial drugs. Conclusions Listeria species are widespread in the study areas. The study towns, season and working hours per day are independent predictors of Listeria species isolation. Multidrug resistance among L. monocytogenes is common. Therefore, regular training for meat handlers, prudent use of drugs, and further serological and molecular studies on Listeria species are important.


2020 ◽  
Author(s):  
Yu-xuan Li ◽  
Chang-zheng He ◽  
Yi-chen Liu ◽  
Peng-yue Zhao ◽  
Xiao-lei Xu ◽  
...  

Abstract Backgrounds: A respiratory epidemic defined as coronavirus disease 2019 (COVID-19) is becoming unstoppable and has been declared a pandemic. Patients with cancer are more likely to develop COVID-19. Based on our experience during the pandemic period, we propose some surgery strategies for gastric cancer patients under the COVID-19 situation. Methods We defined the ‘COVID-19’ period as occurring between 2020-01-20 and 2020-03-20. All the enrolled patients were divided into two groups, pre-COVID-19 group (PCG) and COVID-19 group (CG). A total of 109 patients with gastric cancer were enrolled in this study. Results The waiting times before admission increased by 4 days in CG(PCG:4.5 [IQR: 2, 7.8] vs. CG:8.0 [IQR: 2,20]; P = 0.006). More patients had performed chest CT scan besides abdominal CT before admission during COVID-19 period(PCG:22[32%]vs. CG:30[73%], p = 0.001). After admission, during COVID period, the waiting time before surgery was longer(3[IQR: 2,5] vs. 7[IQR: 5,9]; P < 0.001),more laparoscopic surgery were performed(PCG: 51[75%] vs. CG: 38[92%],p = 0.021), and hospital stay after surgery was longer (7[IQR: 6,8] vs.9[IQR:7,11] ; P < 0.001). The total cost of hospitalization increased during COVID period, (9.22[IQR:7.82,10.97] vs. 10.42[IQR:8.99,12.57]; p = 0.006). Conclusion Since no data is available yet on the impact of COVID-19 on gastric cancer patients,our own experience with COVID-19 in gastric cancer surgery has hopefully provided an opportunity for colleagues to reflect on their own service and any contingency plans they have to tackle the crisis.


Author(s):  
Tajuddin Noor ◽  
Nurhayana Sennang ◽  
Benny Rusli

Sepsis was one of the morbidity and mortality causes in neonatal. The diagnosis and treatment requires the bacterial identification and selection of sensitive antimicrobials. The aim of this study was to know the bacterial pattern and antimicrobial sensitivity of blood culture in the suspected neonatal sepsis patients who were treated at NICU in Dr.Wahidin Sudirohusodo Hospital Makassar. A retrospective study was conducted with secondary data from the culture and antimicrobial susceptibility test between the period of June 2010−July 2011. In this present study was found that from the total 91 blood culture isolates, bacteria Gram-negative group was 85.7% and Grampositive was 14.3% and the isolate encountered in order of frequency were Alkali genes faecalis 50.5%, Klebsiella pneumonia 25.3%, and Staphylococcus epidermidis 9.9%. In the Gram-negatives group, the isolate often encountered were Alkali genes faecalis 59.0%, Klebsiella pneumonia 29.4% and Enterobacter spp 6.4% while in the Gram-positive group were found Staphylococcus epidermidis 69.2% and Staphylococcus saprophytic 23.1%. The more sensitive antimicrobal that belong to Gram-negative group were Meropenem 94.4%, Levofloxacin 92.1%, and Ceftazidime 77.0% while the more resistant were Ampicillin 94.6%, Gentamycin 89.1% and Cefuroxime 82.7%. The more sensitive antimicrobal that belong to Gram-positive group were Vancomycin and Chloramphenicol 91.7% and Novobiosin 76.9% while the more resistant were Gentamycin and Ceftriaxone 100.0% and Amoxicillin 91.7%. Based on this study it can be concluded that Gram-negative aerobe bacteria was more common than the Gram-positive one. Meropenem, Levofloxacin and Ceftazidime antimicrobal were high sensitive to Gram-negative while Vancomycin, Chloramphenicol, and Novobiocin were high sensitive to Gram-positive. The resistance of Ampicillin and Gentamycin were found in both bacterially groups of sepsis suspected neonatal patients in NICU


2020 ◽  
Author(s):  
Ai-Min Jiang ◽  
Xin Shi ◽  
Na Liu ◽  
Huan Gao ◽  
Meng-Di Ren ◽  
...  

Abstract Background: Bacterial infections are the most frequent complications in patients with malignancy, and the epidemiology of nosocomial infections among cancer patients has changed over time. This study aimed to evaluate characteristics, antibiotic-resistant patterns, and prognosis of nosocomial infections caused by multidrug-resistant bacteria (MDR) in cancer patients. Methods: This retrospectively analyzed cancer patients with MDR bacteria caused nosocomial infections from August 2013 to May 2019 and was conducted to explore the risk factors, clinical features, outcomes, and antibiotic-resistant patterns of these infections. Results: Overall, 257 cancer patients developed nosocomial infections caused by MDR bacteria. Extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae was the most frequently isolated multidrug-resistant Gram-negative bacteria (MDRGNB), followed by ESBL-producing Klebsiella pneumonia, and Acinetobacter baumannii. Cancer patients with liver disease, received intrapleural/abdominal infusion within 30 days, length of hospitalization, hemoglobin, and albumin were independent factors for 30-day mortality in the study population. The isolated MDR bacteria were highly sensitive to amikacin, meropenem, imipenem, tigecycline, and piperacillin/tazobactam. Conclusions: Cancer patients with prolonged hospitalization was an independent predictor of a favorable outcome. However, cancer patients with liver disease, received intrapleural/abdominal infusion within 30 days, anemia, and hypoproteinemia were independent risk factors of 30-day mortality.


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