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amebic liver abscess

Aanchal Kakkar, Asha Tyagi, Ashok Kumar Sethi
No abstract text is available yet for this article.
January 2017: Journal of Anaesthesiology, Clinical Pharmacology
Sanaa Al Rehily, Reham Kaki, Fahad Al Ghamdi, Dalia El-Hossary
INTRODUCTION: Amoebiasis is the third most frequent cause of mortality after malaria and schistosomiasis. In developed countries, amebiasis is also seen in migrants who have travelled to endemic areas. The factors responsible for its progression from intestinal amebiasis to an amebic liver abscess are not fully understood. CASE PRESENTATION: A 54-year-old man presented with abdominal pain, fever and diarrhoea. Laparotomy confirmed an inflammatory mass involving the right colon, and he underwent a right hemicolectomy...
June 2016: JMM Case Reports
Jayabal Pandiaraja
Liver abscess is mostly either pyogenic or amebic. Fungal and mycobacterial liver abscesses are rare and mostly associated with immunosuppression. The occurrence of fungal liver abscess with hydatid cyst was never reported previously. This case created diagnostic difficulty, whether we are dealing with liver abscess or hydatid cyst. Sometimes, it may be possible that concurrent occurrence of hydatid cyst with liver abscess or hydatid cyst become infected and mimic like liver abscess.
July 2016: Journal of Family Medicine and Primary Care
Gregorio González-Alcaide, Jorge Peris, José Manuel Ramos
AIM: To analyze the research activity on liver abscess (LA) and identify the main topic clusters in the area. METHODS: We identified all documents using the medical subject heading "LA" indexed in the MEDLINE database between 2001 and 2015. We performed a descriptive bibliometric analysis, characterizing the evolution of scientific activity, the publication types of the documents, the document categories of clinical interest (case reports, clinical trials, evaluation studies, meta-analysis, observational studies, practice guidelines and validation studies) and the geographic distribution of the research...
January 14, 2017: World Journal of Gastroenterology: WJG
D Creemers-Schild, P J J van Genderen, L G Visser, J J van Hellemond, P J Wismans
BACKGROUND: Amebic liver abscess is a rare disease in high-income countries. Recurrence of amebic liver abscess is even rarer with only a few previous reports. Here we present a patient who developed three subsequent amebic liver abscesses over a sixteen-year period. CASE PRESENTATION: A Caucasian male developed recurrent amebic liver abscesses, when aged 23, 27 and 39 years. Only on the first occasion did this coincide with a recent visit to the tropics. The patient received adequate treatment during each episode...
October 18, 2016: BMC Research Notes
Kuldeep Verma, Tomoyoshi Nozaki, Sunando Datta
Entamoeba histolytica, the causative agent of amoebic colitis and liver abscess in human, ingests the intestinal bacteria and variety of host cells. Phagocytosis of bacteria by the amebic trophozoite has been reported to be important for the virulence of the parasite. Here, we set out to characterize different stages of phagocytosis of type 1 E. coli and investigated the role of a set of amoebic Rab GTPases in the process. The localizations of the Rab GTPases during different stages of the phagocytosis were investigated using laser scanning confocal microscopy and their functional relevance were determined using fluorescence activated cell sorter based assay as well as colony forming unit assay...
December 2016: Molecular Microbiology
Virginia Sánchez, Jesús Serrano-Luna, Esther Ramírez-Moreno, Víctor Tsutsumi, Mineko Shibayama
The parasite Entamoeba histolytica causes intestinal amebiasis and amebic liver abscess as its main extraintestinal manifestation. To study the in vivo events related to inflammation and the interactions between hosts and parasites during amebiasis, we designed a novel model of host-parasite interactions using cellulose membrane dialysis bags containing E. histolytica trophozoites. A bag is placed into the hamster peritoneal cavity, as has been reported in previous studies of programmed cell death (PCD) in E...
December 2016: Parasitology International
Joel Cherian, Rahul Singh, Muralidhar Varma, Sudha Vidyasagar, Chiranjay Mukhopadhyay
Pyogenic liver abscesses are rare with an incidence of 0.5% to 0.8% and are mostly due to hepatobiliary causes (40% to 60%). Most are polymicrobial with less than 10% being caused by Staphylococcus aureus. Of these, few are caused by methicillin-resistant Staphylococcus aureus (MRSA) and fewer still by a community-acquired strain. Here we present a case study of a patient with a community-acquired MRSA liver abscess. The patient presented with fever since 1 month and tender hepatomegaly. Blood tests revealed elevated levels of alkaline phosphatase, C-reactive protein, erythrocyte sedimentation rate, and neutrophilic leukocytosis...
July 2016: Journal of Investigative Medicine High Impact Case Reports
Stacey L Burgess, William A Petri
Entamoeba histolytica, the etiological agent of amebiasis, is a significant cause of pediatric diarrhea in South Asia and sub-Saharan Africa. The clinical outcome of an E. histolytica exposure varies enormously and can present as diarrhea, dysentery, or amebic liver abscess. Host and parasite factors likely contribute to the outcome of infection with the parasite, but do not explain the wide variation in presentation of disease. This suggests that other environmental factors affect disease. An emerging body of work suggests that the host intestinal bacterial microbiome may have a significant influence on the development and outcome of amebiasis...
2016: Current Tropical Medicine Reports
Jayant Kumar Ghosh, Sundeep Kumar Goyal, Manas Kumar Behera, Manish Kumar Tripathi, Vinod Kumar Dixit, Ashok Kumar Jain, Ramchandra Shukla
BACKGROUND: Amebic liver abscess (ALA) is a common and serious problem in our country. There are only a few controlled trials on the efficacy and advantages of combination therapy with percutaneous needle aspiration and pharmacotherapy, over pharmacotherapy alone for amebic liver abscess. MATERIAL AND METHODS: This study was conducted to compare the efficacy of two different treatment modalities i.e. drug treatment alone vs. drug treatment and aspiration of abscess cavity in patients with small (up to 5 cm) and large (5 cm to 10 cm) size ALA...
October 2015: Tropical Gastroenterology: Official Journal of the Digestive Diseases Foundation
Ali Zakaria, Bayan Al-Share, Khaled Al Asad
Amebiasis is a parasitic infection caused by the protozoan Entamoeba histolytica. While most infections are asymptomatic, the disease could manifest clinically as amebic dysentery and/or extraintestinal invasion in the form of amebic liver abscess or other more rare manifestations such as pulmonary, cardiac, or brain involvement. Herein we are reporting a case of a 24-year-old male with history of Down syndrome who presented with severe right side pneumonia complicated with multicystic empyema resistant to regular medical therapy...
2016: Case Reports in Pulmonology
K P Srikanth, B R Thapa, Sadhna B Lal
BACKGROUND: Liver abscess is a common deep seated abscess in children; amebic liver abscess is associated with more local complications. CASE CHARACTERISTICS: We report two preschool children presenting with short history of pain, fever and right upper quadrant pain. The abscess communicated with gastro-intestinal tract (ascending colon in case 1 and duodenum in case 2), and diagnosis of amebic liver abscess was confirmed by DNA PCR. OUTCOME: Both children were successfully managed with intravenous antibiotics and catheter drainage...
March 2016: Indian Pediatrics
Sankaramoorthy Dhanalakshmi, Subhash Chandra Parija
INTRODUCTION: Amebiasis is the third leading cause of death after malaria and schistosomiasis. Diagnosis is based on microscopy, culture, isoenzyme analysis, and serology-based techniques. In resource-limited nation such as India where polymerase chain reaction cannot be employed, serology is considered to be the reliable diagnostic tool. To find the seroprevalence of Entamoeba histolytica IgG antibody by enzyme-linked immunosorbent assay (ELISA) among the liver abscess cases and healthy controls...
January 2016: Tropical Parasitology
Saurabh Kedia, Ritika Rampal, Jaishree Paul, Vineet Ahuja
The disease profile in the Indian population provides a unique opportunity for studying the host microbiome interaction in both infectious (amebiasis) and autoimmune diseases like inflammatory bowel disease (IBD) from a similar environment and genetic background. Analysis of fecal samples from untreated amebic liver abscess (ALA) patients, Entamoeba histolytica (Eh)-negative and -positive asymptomatic individuals, and pus samples from naive ALA patients revealed a significant reduction in Lactobacillus in asymptomatic individuals (Eh +ve) and ALA patients...
July 2016: Journal of Gastroenterology
Tamar Lachish, Anat Wieder-Finesod, Eli Schwartz
Amebic liver abscess (ALA) is endemic in developing countries. The epidemiology and clinical characteristics of the disease in developing countries are well described. Travelers from nonendemic countries can serve as a model for the natural history of ALA. Currently, the available literature on travelers is limited. This is a retrospective observational study on Israeli travelers diagnosed with ALA. Data regarding travel history, clinical presentation, imaging, and treatment were collected and analyzed. Among 6,867 ill returning Israeli travelers, amebiasis was diagnosed in 53 travelers (0...
May 4, 2016: American Journal of Tropical Medicine and Hygiene
Rafael Campos-Rodríguez, Manuel Gutiérrez-Meza, Rosa Adriana Jarillo-Luna, María Elisa Drago-Serrano, Edgar Abarca-Rojano, Javier Ventura-Juárez, Luz María Cárdenas-Jaramillo, Judith Pacheco-Yepez
Host invasion by Entamoeba histolytica, the pathogenic agent of amebiasis, can lead to the development of amebic liver abscess (ALA). Due to the difficulty of exploring host and amebic factors involved in the pathogenesis of ALA in humans, most studies have been conducted with animal models (e.g., mice, gerbils, and hamsters). Histopathological findings reveal that the chronic phase of ALA in humans corresponds to lytic or liquefactive necrosis, whereas in rodent models there is granulomatous inflammation. However, the use of animal models has provided important information on molecules and mechanisms of the host/parasite interaction...
2016: Parasite: Journal de la Société Française de Parasitologie
Xiangyang Min, Meng Feng, Yue Guan, Suqin Man, Yongfeng Fu, Xunjia Cheng, Hiroshi Tachibana
BACKGROUND: Entamoeba histolytica is an intestinal protozoan parasite that causes amoebiasis, including amebic dysentery and liver abscesses. E. histolytica invades host tissues by adhering onto cells and phagocytosing them depending on the adaptation and expression of pathogenic factors, including Gal/GalNAc lectin. We have previously reported that E. histolytica possesses multiple CXXC sequence motifs, with the intermediate subunit of Gal/GalNAc lectin (i.e., Igl) as a key factor affecting the amoeba's pathogenicity...
January 2016: PLoS Neglected Tropical Diseases
Adam Sateriale, Peter Miller, Christopher D Huston
Entamoeba histolytica is the protozoan parasite that causes invasive amebiasis, which is endemic to many developing countries and characterized by dysentery and liver abscesses. The virulence of E. histolytica correlates with the degree of host cell engulfment, or phagocytosis, and E. histolytica phagocytosis alters amebic gene expression in a feed-forward manner that results in an increased phagocytic ability. Here, we used a streamlined RNA interference screen to silence the expression of 15 genes whose expression was upregulated in phagocytic E...
April 2016: Infection and Immunity
Sharmin Begum, Jeanie Quach, Kris Chadee
Entamoeba histolytica (Eh) is a protozoan parasite that infects 10% of the world's population and results in 100,000 deaths/year from amebic dysentery and/or liver abscess. In most cases, this extracellular parasite colonizes the colon by high affinity binding to MUC2 mucin without disease symptoms, whereas in some cases, Eh triggers an aggressive inflammatory response upon invasion of the colonic mucosa. The specific host-parasite factors critical for disease pathogenesis are still not well characterized. From the parasite, the signature events that lead to disease progression are cysteine protease cleavage of the C-terminus of MUC2 that dissolves the mucus layer followed by Eh binding and cytotoxicity of the mucosal epithelium...
2015: Frontiers in Microbiology
Rhonda Fleming, Chad J Cooper, Ruben Ramirez-Vega, Ana Huerta-Alardin, Darius Boman, Marc J Zuckerman
BACKGROUND: Invasive amebiasis is not frequently seen in the United States. It is associated with considerable morbidity in patients residing in or traveling to endemic areas. We report a case series of patients with amebic colitis in a United States-Mexico border city to alert physicians to the varied clinical manifestations. CASE PRESENTATION: Nine patients were diagnosed with amebic colitis. Mean age was 56 (38-83), 6 were males, and all were Hispanic. Common symptoms were diarrhea (56 %), hematochezia (33 %) and abdominal bloating (11 %)...
December 14, 2015: BMC Research Notes
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