Serratia Liver Abscess Infection and Cardiomyopathy in a Patient with Diabetes Mellitus: A Case Report and Review of the Literature

Infective Endocarditis Due to Serratia odorifera: A Case Report and Literature Review

Serratia odorifera from the time of its discovery in the 1970's had been considered a common colonizer of the skin with little pathogenic potential. Cases of human infections caused by S. odorifera are relatively rare. To date, very few cases have been reported describing primarily bloodstream and urinary tract infections. We describe a patient who developed endocarditis due to S. odorifera confirmed with a transesophageal echocardiogram. The patient was treated with six weeks of antibiotics with uneventful recovery. After a thorough review of published literature, we concluded that this is the first case of endocarditis caused by S. odorifera reported in English literature.

Right costophrenic angle abscess due to Salmonella Dublin infection in combination with type 2 diabetes mellitus

The main manifestations of type 2 diabetes mellitus are excessive drinking, polyphagia, polyuria and wasting or weight loss in a short period of time, but it is rare to have persistent fever of unknown origin as the main manifestation. This case report describes a 68-year-old male patient with type 2 diabetes mellitus presenting with unexplained fever with persistent exacerbation and a cystic lesion in the right costophrenic horn on abdominal computed tomography (CT). A cytoculture examination of the puncture fluid suggested that the infection was due to Salmonella Dublin. The patient was treated with drainage of the abscess in the right costophrenic angle area, which then healed successfully. These findings suggest that Salmonella Dublin infection should be considered when a patient with type 2 diabetes mellitus presents with an unexplained persistent fever. At the same time, CT-guided abscess puncture can be performed to improve the patient's symptoms, aid diagnosis and improve the quality of life.

Serrating through vascular access catheters: a great masquerader with severe systemic manifestations

Serratia marcescens, time and again, has demonstrated its ability to easily adhere and infect vascular access catheters, making them a bona fide source of hospital outbreaks and contributing to adverse patient outcomes. We present a unique case of a severe recurrent Serratia infection, leading to persistent bacteria in the blood, haematogenous dissemination and subsequent development of abscesses, to a degree not reported in the literature before. These infections are exceedingly challenging to eradicate, owing to multiple virulence mechanisms and the deep seeding ability of this microorganism. Serratia infections require a multifaceted approach with intricacies in identification, therapeutics and surveillance, all of which are sparsely reported in the literature and reviewed in this report.

Evaluation of carcinogenic activities and sperm abnormalities of Gram-negative bacterial metabolites isolated from cancer patients after subcutaneous injection in albino rats

Microbial pathogens drive tumorigenesis in 20% of cancer cases, so the present study is aimed to evaluate the carcinogenic activities, sperm abnormalities and other dangerous effects of the subcutaneous injection of extracts obtained from various clinical Gram-negative bacteria derived from cancer patients using albino rats. We isolated, identified and extracted of their secondary metabolites of carbapenem resistant Gram-negative bacteria derived from cancer patients. Various methods have been used to determine hepatotoxicity, nephrotoxicity, tumorigenesis, inflammatory and sperm abnormalities in the albino rats injected with extracts. In comparison with the normal animals group, all extracts induced hepatotoxicity which was evidenced by the significant elevation in the activity of the serum alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltransferase and alkaline phosphatase; also, nephrotoxicity that was indicated through the marked increase in the serum urea and creatinine levels; tumorigenesis was achieved from the sharp elevation in serum levels of alpha fetoprotein, carcinoembryonic antigen and lactate dehydrogenase values as tumor markers; as well as severe inflammatory characteristics were monitored from the marked raise of tumor necrosis factor alpha and interleukin-1beta. Furthermore, the proportion of micronuclei in polychromatic erythrocytes and sperm abnormalities were statistically significant in all groups compared to control group. Various kinds of head abnormalities and coiled tail were noted. Histopathological examination of hepatic tissue came in line with the biochemical and cytological findings. It could conclude that the extracts of Serratia sp. Esraa 1, Stenotrophomonas sp. Esraa 2, Acinetobacter sp. Esraa 3, Escherichia sp. Esraa 4 and Pseudomonas sp. Esraa 5 were able to initiate cytotoxicity and tumorigenesis in rats.