Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 12.322
Filter
1.
West Afr J Med ; 41(7): 836-839, 2024 Jul 30.
Article in English | MEDLINE | ID: mdl-39357093

ABSTRACT

Echinococcosis is a zoonosis caused by tapeworms of the genus Echinococcus. Cerebral echinococcosis (CE) poses a significant public health challenge due to its neglected status. It is endemic in Central Asia, Africa and parts of South America, with prevalence estimated to be 1.18-3 per 100,000 population in Iran. We report the case of a 45-year-old male who presented with seizure disorders and was evaluated and treated for a neoplasm, with complete excision of the lesion. Pathologic examination revealed the characteristic echinococcal (hydatid) cyst. The patient recovered fully. As CE is a great imitator of several other conditions in endemic areas, a high index of suspicion must be maintained in endemic countries.


L'échinococcose est une zoonose provoquée par des ténias du genre Echinococcocus. L'échinococcose cérébrale (EC) pose un défi de santé publique important en raison de son statut négligé. Elle est endémique en Asie centrale, en Afrique et dans certaines parties de l'Amérique du Sud, avec une prévalence estimée entre 1,18 et 3 pour 100 000 habitants en Iran. Nous rapportons le cas d'un homme de 45 ans qui a présenté des troubles épileptiques et a été évalué et traité pour une tumeur, avec excision complète de la lésion. L'examen pathologique a révélé le kyste échinococcique (hydatique) caractéristique. Le patient s'est complètement rétabli. Comme l'EC est un grand imitateur de plusieurs autres conditions dans les zones d'endémie, un indice de suspicion élevé doit être maintenu dans les pays d'endémie. MOTS CLÉS: Tumeur cérébrale, rapport de cas, échinococcose cérébrale, sud-ouest du Nigeria.


Subject(s)
Brain Neoplasms , Echinococcosis , Humans , Male , Middle Aged , Echinococcosis/diagnosis , Brain Neoplasms/diagnosis , Nigeria , Diagnosis, Differential , Magnetic Resonance Imaging/methods , Tomography, X-Ray Computed/methods , Brain Diseases/diagnosis , Brain Diseases/parasitology
2.
Front Immunol ; 15: 1425603, 2024.
Article in English | MEDLINE | ID: mdl-39351224

ABSTRACT

Background: Current treatments and prevention strategies for echinococcosis are inadequate. Recent advancements in molecular vaccine development show promise against Echinococcus granulosus; however, Echinococcus multilocularis remains a challenge. A Multi-epitope Vaccine could potentially induce specific B and T lymphocyte responses, thereby offering protection against Echinococcus multilocularis infection. Methods: This study aimed to develop a MEV against alveolar echinococcosis. Key epitopes from the Echinococcus multilocularis proteins EmTSP3 and EmTIP were identified using immunoinformatics analyses. These analyses were conducted to assess the MEV feasibility, structural characteristics, molecular docking, molecular dynamics simulations, and immune simulations. The immunogenicity and antigenicity of the vaccine were evaluated through in vitro and in vivo experiments, employing ELISA, Western blotting, FCM, challenge infection experiments, and ELISPOT. Results: The effective antigenicity and immunogenicity of MEV were demonstrated through immunoinformatics, as well as in vitro and in vivo experiments. In vitro experiments revealed that MEV increased the secretion of IFN-γ and IL-4 in PBMC and successfully bound to specific antibodies in patient serum. Furthermore, mice immunized with MEV developed a robust immune response, characterized by elevated levels of CD4+ and CD8+ T-cells, increased secretion of IFN-γ and IL-4 by specific Th1 and Th2 cells, and heightened serum antibody levels. Importantly, MEV reduced the weight of cysts by conferring resistance against echinococcosis. These findings suggest that MEV is a promising candidate for the prevention of Echinococcus multilocularis infection. Conclusion: A total of 7 CTL, 7 HTL, 5 linear B-cell, and 2 conformational B-cell epitopes were identified. The vaccine has demonstrated effective antigenicity and immunogenicity against AE through molecular docking, immune simulation, molecular dynamics studies, and both in vitro and in vivo experiments. It provides effective protection against Echinococcus multilocularis infection, thereby laying a foundation for further development.


Subject(s)
Antigens, Helminth , Echinococcosis , Echinococcus multilocularis , Animals , Echinococcus multilocularis/immunology , Echinococcosis/prevention & control , Echinococcosis/immunology , Mice , Antigens, Helminth/immunology , Humans , Vaccines/immunology , Helminth Proteins/immunology , Helminth Proteins/chemistry , Female , Antibodies, Helminth/immunology , Antibodies, Helminth/blood , Mice, Inbred BALB C , Epitopes, T-Lymphocyte/immunology , Molecular Docking Simulation , Epitopes, B-Lymphocyte/immunology
3.
JNMA J Nepal Med Assoc ; 62(272): 272-274, 2024 Mar 31.
Article in English | MEDLINE | ID: mdl-39356847

ABSTRACT

ABSTRACT: Like many agricultural countries, cystic echinococcal zoonotic disease is endemic in Nepal. Incidence of hydatid cyst in liver and lungs are common among the adult population but hydatid cyst of the uterus is an extremely rare entity. We report a case of a 76-year-old menopausal lady who presented with lower abdominal pain for 4 months and underwent laparotomy for provisional diagnosis of myometrial cyst, as shown by MRI scan, however the cyst was found to be primary hydatid cyst of uterus. Postoperatively serological test for hydatid cyst was positive for echinococcus granulosus, further confirmed by histopathological diagnosis. Hence in endemic areas like ours, there should be high index of suspicion of the possibility of hydatid cyst as a differential for cystic pelvic masses.


Subject(s)
Echinococcosis , Humans , Female , Echinococcosis/diagnosis , Echinococcosis/surgery , Aged , Diagnosis, Differential , Echinococcus granulosus/isolation & purification , Magnetic Resonance Imaging/methods , Uterine Diseases/diagnosis , Uterine Diseases/parasitology , Uterine Diseases/surgery , Animals
4.
Turkiye Parazitol Derg ; 48(3): 150-154, 2024 10 07.
Article in English | MEDLINE | ID: mdl-39373588

ABSTRACT

OBJECTIVE: Parasite are living organisms which survive on another living being for their nourishment and survival. When these parasites resides on human body, they bring about inflammatory response. This inflammatory response leads to tissue reaction. Tissue response on microscopy appear as an eosinophilia, abscess and granulomas. This study was planned with the objective to know the frequency of parasite infection, tissue response in parasite infection and its comparison in terms of variables like age, sex and the type of parasite. METHODS: This is a retrospective study, conducted in the department of pathology. A total of 26 cases of parasitic infections in human specimens reported in our department from January 2008 to December 2019 were included in this study. On all archived cases hematoxylin and eosin and where ever required periodic acid schiff was applied. These slides were thoroughly examined and clinicopathological correlation was studied. RESULTS: Age range of patients was 5 years to 70 years. Maximum number of patients were belonging to 11-20 year age group. Male to female ratio was 1:2. Among the 26 cases, there were 9 cases (34.62%) of hydatid cyst, six cases of Entamoeba histolytica (23.07%), four cases of Enterobious vermicularis (15.38%), and two cases (7.69%) each of Ascaris lumbricoides, filaria and cysticercosis respectively. A specific tissue response seen in cysticercosis having chronic inflammatory cells, palisaded epithelioid cells granuloma and giant cell reaction while other showed inflammatory cells infiltration. CONCLUSION: Clinically diagnosis of parasitic infection in each and every case is not possible, similarly radiological investigation is also suggestive only. Histopathology examination is the benchmark investigation to diagnose parasite infection and tissue reaction to the host. Histopathology examination must be implicated in every case to identify parasite and tissue reaction so that the patients can be managed accordingly before the complications rises.


Subject(s)
Parasitic Diseases , Humans , Retrospective Studies , Male , Female , India/epidemiology , Adult , Child , Middle Aged , Adolescent , Child, Preschool , Young Adult , Aged , Parasitic Diseases/parasitology , Parasitic Diseases/pathology , Parasitic Diseases/epidemiology , Rural Population , Echinococcosis/pathology , Echinococcosis/epidemiology , Enterobiasis/epidemiology , Enterobiasis/parasitology , Enterobiasis/pathology , Granuloma/parasitology , Granuloma/pathology , Granuloma/epidemiology , Animals , Entamoebiasis/parasitology , Entamoebiasis/epidemiology , Entamoebiasis/pathology , Cysticercosis/pathology , Cysticercosis/epidemiology , Cysticercosis/parasitology
5.
Turkiye Parazitol Derg ; 48(3): 191-194, 2024 10 07.
Article in English | MEDLINE | ID: mdl-39373595

ABSTRACT

Cystic echinococcosis is a parasitic disease with significant importance for public health in endemic regions. Spinal cystic echinococcosis, however, is a rare form that may lead to severe complications due to its localization. In this manuscript, we presented a 16-year-old male patient who admitted with abdominal and back edema for 2 months, evaluated with preliminary diagnoses of Pott's abscess and malignant mass, subsequently diagnosed with spinal cystic echinococcosis. It was concluded that cystic echinococcosis should be considered in differential diagnosis of large cystic masses and percutaneous aspiration, injection, reaspiration method might be a safe and effective treatment option particularly for cases of complicated spinal cystic echinococcosis.


Subject(s)
Echinococcosis , Humans , Male , Adolescent , Spinal Diseases/parasitology , Diagnosis, Differential , Suction , Albendazole/therapeutic use , Albendazole/administration & dosage , Magnetic Resonance Imaging
6.
BMC Infect Dis ; 24(1): 980, 2024 Sep 16.
Article in English | MEDLINE | ID: mdl-39285332

ABSTRACT

BACKGROUND: Cystic echinococcosis (CE) is prevalent in livestock farming regions around the world. However, it remains relatively rare compared to other infectious diseases. CE typically affects the liver, lungs, brain, and kidneys. Spinal and pleural wall involvement is exceedingly rare. We report a unique case of intradural and pleural wall CE in a young male, successfully treated with surgery and postoperative medication. CASE PRESENTATION: A 19-year-old Tibetan male from the Qinghai-Tibet Plateau was diagnosed with intradural and pleural wall CE through imaging, serology, and surgical pathology. According to the Dew/Braithwaite & Lees (BL) classification, his condition was an exceptionally rare form of spinal echinococcosis, compounded by an even rarer pleural wall involvement. Prompt surgical intervention and postoperative medication resulted in significant improvement in spinal cord compression symptoms. CONCLUSIONS: This case highlights the diagnostic and therapeutic challenges of rare CE locations. MRI proved superior to CT in diagnosing bony cystic echinococcosis. Early surgical intervention combined with medication facilitates spinal cord function recovery, providing valuable insights for managing similar cases.


Subject(s)
Echinococcosis , Humans , Male , Echinococcosis/surgery , Echinococcosis/diagnostic imaging , Echinococcosis/diagnosis , Echinococcosis/drug therapy , Young Adult , Magnetic Resonance Imaging , Pleura/pathology , Pleura/diagnostic imaging , Pleura/surgery , Tomography, X-Ray Computed , Tibet , Spinal Cord Compression/surgery , Spinal Cord Compression/etiology , Spinal Cord Compression/parasitology
8.
Parasitol Res ; 123(9): 330, 2024 Sep 24.
Article in English | MEDLINE | ID: mdl-39316156

ABSTRACT

The factors involving in the natural history and determinants of different features of human cystic echinococcosis (CE) are not adequately understood. Several host-related factors including the genetic structure of the host and human leukocyte antigens (HLAs) are believed to be involved in the natural history of CE in humans. The present study was conducted to investigate the association between HLA class II genes and active and inactive stages of hepatic cystic echinococcosis. Echinococcus granulosus cyst samples and patient information were collected from the biobank of the Iranian Hydatid Disease Registry from 2019 to 2022. HLA-DRB and HLA-DQB were characterized by PCR method. CE patients were categorized into three active (CE1 and CE2), inactive (CE4 and CE5), and transitional (CE3) stages according to the WHO ultrasound classification of CE. In total, 77 participants including 38 patients (36.8% men and 63.2% women) with different stages of CE as well as 39 healthy individuals (38.5% men and 61.5% women) were included in the study. Findings of the study showed that the frequency of HLA-DRB1*03 was significantly lower in the patients compared to the healthy individuals. The frequencies of HLA-DQB and HLA-DRB alleles were not differed significantly between active, inactive, and transitional stages of E. granulosus cysts. Findings of this study indicate the potential role of this allele in the susceptibility of human to cystic echinococcosis. Further large-scale studies in different endemic countries are required to document the significance of HLA-DQB and HLA-DRB as a host-related factor in the natural history of CE in human.


Subject(s)
Echinococcus granulosus , Ultrasonography , Humans , Male , Female , Adult , Middle Aged , Iran , Echinococcus granulosus/genetics , Echinococcus granulosus/immunology , Echinococcosis/parasitology , Animals , Young Adult , Echinococcosis, Hepatic/parasitology , Echinococcosis, Hepatic/diagnostic imaging , Aged , Adolescent
9.
Tidsskr Nor Laegeforen ; 144(10)2024 Sep 10.
Article in English, Norwegian | MEDLINE | ID: mdl-39254012

ABSTRACT

Alveolar echinococcosis is a much-feared parasitic zoonosis caused by the larval stage of Echinococcus multilocularis. Mainland Norway is free from infection, but alveolar echinococcosis is, on rare occasions, imported from endemic regions. Those infected develop slow-growing, multicystic tumours that are clinically and radiologically reminiscent of malignant disease. The disease mainly attacks the liver. Treatment often consists of extensive surgical resection in combination with prolonged use of albendazole. In this clinical review article we summarise the life cycle, clinical findings, diagnosis, treatment and epidemiology of alveolar echinococcosis, and provide examples of the disease course with two patient case reports.


Subject(s)
Albendazole , Echinococcosis, Hepatic , Echinococcosis , Echinococcus multilocularis , Humans , Echinococcus multilocularis/isolation & purification , Echinococcosis, Hepatic/diagnostic imaging , Albendazole/therapeutic use , Animals , Echinococcosis/diagnosis , Echinococcosis/drug therapy , Echinococcosis/diagnostic imaging , Norway , Male , Tomography, X-Ray Computed , Adult , Female , Middle Aged , Anthelmintics/therapeutic use , Life Cycle Stages
10.
Parasitol Res ; 123(10): 336, 2024 Sep 30.
Article in English | MEDLINE | ID: mdl-39347812

ABSTRACT

Echinococcosis is a zoonotic disease, which seriously endangers human health. The immune game between parasite and host is not fully understood. Exosomes are thought to be one of the ways of information communication between parasite and host. In this study, we attempted to explore the communication between Echinococcus granulosus and its host through the medium of exosomes. We collected plasma from E. granulosus patients (CE-EXO) and healthy donors (HD-EXO) and extracted exosomes from the plasma. The expression profile of miRNA in plasma was determined by second generation sequencing. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were used to annotate the function of target genes of differential miRNAs. Meanwhile, we co-cultured plasma exosomes from healthy donors and plasma exosomes from E. granulosus patients with Jurkat T cells with or without phytohaemagglutinin (PHA) stimulation. The expression of CD69 on Jurkat T cells was detected by flow cytometry. The results showed that the miRNA of exosomes between healthy donors and E. granulosus patients was significantly different. GO and KEGG were used to annotate the function of target genes of differential miRNAs. The results indicate that many important pathways are involved in inflammation, metabolism, and immune response after parasite infection, such as p53 signaling pathway, PI3K-Akt signaling pathway, and glycolysis/gluconeogenesis. Flow cytometry showed that CE-EXO reduced the expression of CD69 + on Jurkat T cells. Our present results suggest that these differentially expressed miRNAs may be important regulators of parasite-host interactions. Meanwhile, functional prediction of its target genes provides valuable information for understanding the mechanism of host-parasite interactions. These results provide clues for future studies on E. granulosus escape from host immune attack, which could help control E. granulosus infection.


Subject(s)
Echinococcosis , Echinococcus granulosus , MicroRNAs , Humans , Echinococcosis/immunology , Echinococcosis/blood , Echinococcosis/parasitology , Echinococcosis/genetics , MicroRNAs/blood , MicroRNAs/genetics , Pilot Projects , Echinococcus granulosus/genetics , Echinococcus granulosus/immunology , Animals , Exosomes/genetics , Exosomes/immunology , Exosomes/metabolism , Immunomodulation , Jurkat Cells , Gene Expression Profiling , Host-Parasite Interactions/immunology
11.
BMC Infect Dis ; 24(1): 1062, 2024 Sep 27.
Article in English | MEDLINE | ID: mdl-39333964

ABSTRACT

BACKGROUND: Zoonotic infections, characterized with huge pathogen diversity, wide affecting area and great society harm, have become a major global public health problem. Early and accurate prediction of their outbreaks is crucial for disease control. The aim of this study was to develop zoonotic diseases risk predictive models based on time-series incidence data and three zoonotic diseases in mainland China were employed as cases. METHODS: The incidence data for schistosomiasis, echinococcosis, and leptospirosis were downloaded from the Scientific Data Centre of the National Ministry of Health of China, and were processed by interpolation, dynamic curve reconstruction and time series decomposition. Data were decomposed into three distinct components: the trend component, the seasonal component, and the residual component. The trend component was used as input to construct the Long Short-Term Memory (LSTM) prediction model, while the seasonal component was used in the comparison of the periods and amplitudes. Finaly, the accuracy of the hybrid LSTM prediction model was comprehensive evaluated. RESULTS: This study employed trend series of incidence numbers and incidence rates of three zoonotic diseases for modeling. The prediction results of the model showed that the predicted incidence number and incidence rate were very close to the real incidence data. Model evaluation revealed that the prediction error of the hybrid LSTM model was smaller than that of the single LSTM. Thus, these results demonstrate that using trending sequences as input sequences for the model leads to better-fitting predictive models. CONCLUSIONS: Our study successfully developed LSTM hybrid models for disease outbreak risk prediction using three zoonotic diseases as case studies. We demonstrate that the LSTM, when combined with time series decomposition, delivers more accurate results compared to conventional LSTM models using the raw data series. Disease outbreak trends can be predicted more accurately using hybrid models.


Subject(s)
Disease Outbreaks , Echinococcosis , Leptospirosis , Schistosomiasis , Zoonoses , Leptospirosis/epidemiology , Humans , Animals , Echinococcosis/epidemiology , China/epidemiology , Zoonoses/epidemiology , Incidence , Schistosomiasis/epidemiology , Risk Assessment
12.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi ; 36(4): 435-438, 2024 Jun 07.
Article in Chinese | MEDLINE | ID: mdl-39322307

ABSTRACT

Cystic echinococcosis, a zoonotic disease that poses a significant threat to human health and animal husbandry development, is prevalent across the world and predominantly occurs in agricultural and pastoral regions. However, cystic echinococcosis cases are rare in non-endemic areas, which is likely to cause misdiagnosis or missing diagnosis, resulting in delay in treatment. This report presents an overseas imported cystic echinococcosis case misdiagnosed as pulmonary and hepatic cysts, so as to provide insights into diagnosis and treatment of cystic echinococcosis in non-endemic areas.


Subject(s)
Diagnostic Errors , Echinococcosis, Hepatic , Echinococcosis, Pulmonary , Humans , Echinococcosis, Hepatic/diagnosis , Echinococcosis, Hepatic/parasitology , Echinococcosis, Pulmonary/diagnosis , Echinococcosis, Pulmonary/diagnostic imaging , Echinococcosis, Pulmonary/parasitology , Male , Adult , Echinococcosis/diagnosis , Echinococcosis/parasitology , Cysts/diagnosis , Cysts/parasitology , Communicable Diseases, Imported/diagnosis , Communicable Diseases, Imported/parasitology
13.
J Parasitol ; 110(5): 440-444, 2024 Oct 01.
Article in English | MEDLINE | ID: mdl-39285255

ABSTRACT

Herein we describe a single nucleotide polymorphism-specific polymerase chain reaction (PCR) assay to rapidly detect and differentiate variants belonging to the European and North American lineages of Echinococcus multilocularis in clinical samples. This is an extremely relevant and applicable test in North America because the range of E. multilocularis continues to expand across the continent and because of a rise in prevalence in wildlife, domestic animals, and humans. The endemic North American (NA) and introduced European (EU) variants are believed to have different pathogenic potentials, with the EU variants being more infective and pathogenic than the NA variants. The rise of the EU variants of E. multilocularis increases the risk of spillover from wildlife to humans because of its increased potential for infectivity. Current PCR-based diagnostics can detect E. multilocularis deoxyribonucleic acid (DNA), but DNA sequencing is required to identify the specific variant. Our assay provides a straightforward conventional PCR method to differentiate the NA and EU variants, and we suggest this same approach could be used for the diagnosis of other parasites or variants that are genetically very similar. As surveillance continues for E. multilocularis across North America, identifying the different genetic variants from different geographic regions will become essential to understanding the current epidemiological shift that the parasite is experiencing, as well as informing public health decisions in affected areas.


Subject(s)
DNA, Helminth , Echinococcosis , Echinococcus multilocularis , Haplotypes , Polymerase Chain Reaction , Polymorphism, Single Nucleotide , Echinococcus multilocularis/genetics , Echinococcus multilocularis/classification , Echinococcus multilocularis/isolation & purification , Animals , Polymerase Chain Reaction/veterinary , Polymerase Chain Reaction/methods , Echinococcosis/parasitology , Echinococcosis/veterinary , Echinococcosis/diagnosis , Echinococcosis/epidemiology , Europe/epidemiology , North America/epidemiology , Humans
14.
Tunis Med ; 102(9): 595-599, 2024 Sep 05.
Article in English | MEDLINE | ID: mdl-39287355

ABSTRACT

INTRODUCTION: Echinococcosis is a relatively widespread anthropozoonosis in endemic regions, preferentially affecting the liver and lungs. Although rare, it can sometimes be localized in the muscles. The clinical symptoms are insidious and not very indicative, often leading to a delayed diagnosis. We reported a case of a hydatid cyst located in the gluteal muscle. OBSERVATION: This was a 52-year-old female patient admitted for the appearance of a swelling in the left buttock region, progressively increasing in size. The radiological exam, revealed a large simple cyst originating from the gluteal muscle with purely liquid content. A surgical excision was performed, and the parasitological examination of the hydatid fluid confirmed the diagnosis. CONCLUSION: Hydatid cysts in soft tissues are rare, slow-developing tumors with local extension. This diagnosis should be considered, especially in individuals from endemic countries. The treatment is primarily surgical, but the best way to combat hydatid disease, regardless of its location, remains prevention.


Subject(s)
Echinococcosis , Muscular Diseases , Humans , Echinococcosis/diagnosis , Echinococcosis/surgery , Female , Middle Aged , Buttocks/parasitology , Muscular Diseases/parasitology , Muscular Diseases/diagnosis , Muscular Diseases/surgery , Muscle, Skeletal/parasitology , Muscle, Skeletal/pathology , Muscle, Skeletal/surgery
15.
Antimicrob Agents Chemother ; 68(10): e0094124, 2024 Oct 08.
Article in English | MEDLINE | ID: mdl-39264188

ABSTRACT

Metformin, a safe biguanide derivative with antiproliferative properties, has shown antiparasitic efficacy against the Echinococcus larval stage. Hence, we assessed the efficacy of a dose of 250 mg kg-1 day-1 in experimental models of advanced CE, at 6 and 12 months post-infection with oral and intraperitoneal administration, respectively. At this high dose, metformin reached intracystic concentrations between 0.7 and 1.7 mM and triggered Eg-TOR inhibition through AMPK activation by AMP-independent and -dependent mechanisms, which are dependent on drug dose. Cystic metformin uptake was controlled by increased expression of organic cation transporters in the presence of the drug. In both experimental models, metformin reduced the weight of parasite cysts, altered the ultrastructural integrity of their germinal layers, and reduced the intracystic availability of glucose, limiting the cellular carbon and energy charge and the proliferative capacity of metacestodes. This glucose depletion in the parasite was associated with a slight increase in cystic uptake of 2-deoxiglucose and the transcriptional induction of GLUT genes in metacestodes. In this context, drastic glycogen consumption led to increased lactate production and altered intermediary metabolism in treated metacestodes. Specifically, the fraction of reducing soluble sugars decreased twofold, and the levels of non-reducing soluble sugars, such as sucrose and trehalose, were modified in both cystic fluid and germinal cells. Taken together, our findings highlight the relevance of metformin as a promising candidate for CE treatment and warrant further research to improve the therapeutic conditions of this chronic zoonosis in humans.


Subject(s)
Echinococcosis , Metformin , Metformin/pharmacology , Animals , Echinococcosis/drug therapy , Echinococcosis/parasitology , Mice , Carbon , Glucose/metabolism , Echinococcus granulosus/drug effects , Echinococcus granulosus/metabolism , Female , Larva/drug effects
16.
Parasite ; 31: 56, 2024.
Article in English | MEDLINE | ID: mdl-39311470

ABSTRACT

Alveolar echinococcosis (AE) is a severe liver disease due to infection with the Echinococcus multilocularis larval stage, called the metacestode. Management of AE is based on benzimidazole chemotherapy (albendazole or mebendazole), associated with surgery when possible. Benzimidazoles are the only compounds recommended for the treatment of AE; however, these are parasitostatic, which means that the parasite can resume growth when treatment is interrupted. Also, benzimidazoles can cause liver dysfunction which may prevent their use. Numerous drugs have been reported to have in vitro activity against E. multilocularis, but few had satisfactory in vivo activity, and none were clearly more effective than benzimidazoles. These drugs belong to various therapeutic categories including anti-infective agents (e.g. amphotericin B, mefloquine, pentamidine derivatives), anti-neoplastic compounds (e.g. imatinib, nilotinib, bortezomib), plant-extracted compounds (e.g. thymol, crocin, carvacrol) and others (e.g. metformin, verapamil, thiaclopride). These treatments are generally of limited interest due to their toxicity, their unfavorable pharmacokinetics, or the scarcity of studies involving humans. Apart from benzimidazoles, only amphotericin B, mefloquine and nitazoxanide have been reported to be used for human AE treatment, with unsatisfactory results. Few studies have aimed at developing innovative strategies for AE drug therapy, such as vectorization of drugs using nanoparticles. Altogether, this review emphasizes the urgent need for new therapeutic strategies in AE management, for which there is currently no curative chemotherapy.


Title: Chimiothérapie de l'échinococcose alvéolaire : où en sommes-nous ? Abstract: L'échinococcose alvéolaire (EA) est une maladie sévère du foie due à l'infection par la forme larvaire d'Echinococcus multilocularis, appelée métacestode. La prise en charge de l'EA repose sur la chimiothérapie par benzimidazolés (albendazole ou mébendazole), si possible associée à la chirurgie. Les benzimidazolés sont les seules molécules recommandées dans le traitement de l'EA, toutefois, ceux-ci sont parasitostatiques, ce qui signifie que le parasite peut reprendre sa croissance lors d'une interruption du traitement. Également, les benzimidazolés peuvent causer une dysfonction hépatique qui peut empêcher leur utilisation. De nombreux médicaments ont été rapportés comme ayant une activité in vitro contre E. multilocularis, mais peu d'entre eux avaient une activité in vivo satisfaisante et aucun n'était clairement plus efficace que les benzimidazolés. Ces médicaments appartiennent à diverses catégories, notamment les agents anti-infectieux (par exemple l'amphotéricine B, la méfloquine, des dérivés de la pentamidine), les composés antinéoplasiques (par exemple l'imatinib, le nilotinib, le bortézomib), les composés extraits de plantes (par exemple le thymol, la crocine, le carvacrol) et d'autres (par exemple metformine, vérapamil, thiaclopride). Ces traitements présentent généralement un intérêt limité en raison de leur toxicité, de leur pharmacocinétique défavorable ou de la rareté des études menées chez l'homme. Outre les benzimidazolés, seules l'amphotéricine B, la méfloquine et la nitazoxanide ont été utilisées dans le traitement de l'EA humaine, avec des résultats insatisfaisants. Peu d'études se sont intéressées à développer des stratégies médicamenteuses innovantes contre l'EA, comme la vectorisation de médicaments à l'aide de nanoparticules. Cette revue souligne le besoin urgent de nouvelles stratégies thérapeutiques dans la prise en charge de l'EA, pour lesquelles il n'existe pas de chimiothérapie curative.


Subject(s)
Echinococcosis , Echinococcus multilocularis , Humans , Animals , Echinococcosis/drug therapy , Echinococcus multilocularis/drug effects , Anthelmintics/therapeutic use , Benzimidazoles/therapeutic use , Echinococcosis, Hepatic/drug therapy , Albendazole/therapeutic use , Antineoplastic Agents/therapeutic use , Anti-Infective Agents/therapeutic use
17.
Front Immunol ; 15: 1388120, 2024.
Article in English | MEDLINE | ID: mdl-39281685

ABSTRACT

Objective: In this study, the impact of inhibiting the PI3K/AKT/NF-κB pathway on lung oxidative damage induced by Echinococcus granulosus cyst fluid was investigated. Methods: Twenty-four mice were randomly assigned to four groups. Three months after inoculation with hydatid cyst segments, mice in group A were treated with intraperitoneal and intratracheal saline injections; mice in group B were administered a caudal vein injection of a PI3K inhibitor, followed by cyst fluid sensitization; mice in group C received an AKT inhibitor via caudal vein, followed by cyst fluid sensitization; and mice in group D were subjected to cyst fluid sensitization without any inhibitor treatment. Cellular changes in lung tissues across all groups were evaluated, including pathological section analysis. Analysis of pulmonary tissue and serum from these mice included the assessment of PI3K/AKT/NF-κB pathway proteins, inflammatory factors, and related mRNA levels. Results: Mice in groups B and C exhibited a higher proportion of M2-type macrophages and significantly lower levels of PI3K/AKT/NF-κB pathway proteins, inflammatory factors (interleukin-6 [IL-6]/tumor necrosis factor-α [TNF-α]), and oxidative markers in lung tissues compared to mice in group D (P < 0.05). Conclusion: Our results in this study indicate that activation of the PI3K/AKT/NF-κB pathway contributed to an increase in the M1 macrophage phenotype, leading to enhanced secretion of peroxidases and inflammatory factors. This mechanism plays a crucial role in the oxidative and inflammatory lung damage associated with allergic reactions to E. granulosus cyst fluid.


Subject(s)
Echinococcus granulosus , NF-kappa B , Phosphatidylinositol 3-Kinases , Proto-Oncogene Proteins c-akt , Animals , Echinococcus granulosus/immunology , Mice , Phosphatidylinositol 3-Kinases/metabolism , Proto-Oncogene Proteins c-akt/metabolism , NF-kappa B/metabolism , Signal Transduction , Lung Injury/immunology , Lung Injury/etiology , Lung Injury/parasitology , Macrophages/immunology , Lung/immunology , Lung/pathology , Lung/parasitology , Echinococcosis/immunology , Disease Models, Animal , Female , Cytokines/metabolism , Oxidative Stress
18.
Folia Parasitol (Praha) ; 712024 Aug 05.
Article in English | MEDLINE | ID: mdl-39264026

ABSTRACT

Echinococcus granulosus (Batsch, 1786), a cestode of the Teniidae family, causes human cystic echinococcosis (CE) also known as hydatid disease. Echinococcus granulosus sensu lato includes the G1, G3, G4, G5, G6/7 and G8/10 genotypes which are known to cause human CE. This study aimed to differentiate genotypes of E. granulosus s.l. complex by employing EmsB, a tandemly repeated multilocus microsatellite, using next-generation sequencing (MIC-NGS). Human and animal histopathology-confirmed hydatid cyst tissue samples and reference DNA samples of E. granulosus G1, G3, G4, G5, G6/7 and G10 underwent MIC-NGS assay with custom primers amplifying a 151 bp EmsB DNA fragment. NGS data were analysed using online Galaxy analysis pipeline, a phylogenetic tree was constructed by MEGA software, and haplotype networking was performed with PopArt 1.7. All sixty samples (49 from animals and 11 from humans) included were successfully identified and genotyped with a 100 % success rate. The study showed improved discrimination power to distinguish all study samples including closely related E. granulosus s.s. genotypes G1-G3. The maximum likelihood tree reaffirmed the monophyly of E. granulosus s.l. The median-joining haplotype networking revealed 12 distinct haplotypes. In conclusion, MIC-NGS assay was shown to be sensitive, specific and simple to apply to clinical samples offering a powerful discriminatory tool for the genotyping of E. granulosus s.l.


Subject(s)
Echinococcosis , Echinococcus granulosus , Genotype , High-Throughput Nucleotide Sequencing , Microsatellite Repeats , Animals , Echinococcus granulosus/genetics , Echinococcosis/veterinary , Echinococcosis/parasitology , Humans , Phylogeny , Genotyping Techniques/veterinary
19.
Echocardiography ; 41(9): e15914, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39225587

ABSTRACT

Despite being a rare phenomenon, pericardial hydatid cysts present unique diagnostic challenges and require a multimodality imaging as well as a multidisciplinary approach for a curative management. The authors here present a case of a middle aged man who was referred to them for management of new onset atrial flutter with mitral regurgitation.


Subject(s)
Atrial Flutter , Echinococcosis , Mitral Valve Insufficiency , Humans , Male , Atrial Flutter/complications , Atrial Flutter/diagnosis , Echinococcosis/complications , Echinococcosis/diagnosis , Mitral Valve Insufficiency/diagnosis , Mitral Valve Insufficiency/etiology , Mitral Valve Insufficiency/complications , Middle Aged , Diagnosis, Differential , Pericardium/diagnostic imaging , Echocardiography/methods , Mediastinal Cyst/complications , Mediastinal Cyst/diagnosis , Mediastinal Cyst/diagnostic imaging
20.
Chirurgia (Bucur) ; 119(4): 385-392, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39250608

ABSTRACT

PURPOSE: Hydatic cysts (HC) rarely occur primarily in the spleen. Partial splenectomy (PS) is an established procedure for preserving spleen parenchyma, but rarely used in the treatment of HC. We aim to present our experience with PS for HC and to review the literature of splenic HC treated by PS. Material and Methods: The databases of PS performed between 2000 and 2023 in the Department of General Surgery of Fundeni Clinical Institute (Bucharest) for HC have been reviewed retrospectively. Searching the PubMed, Medline, and Google Scholar databases for keywords such as "partial splenectomy", "splenic hydatid cyst" etc, we retrieved publications from 2000 to December 2023 in English for a literature review. We excluded studies which were not published in English and studies which did not provide accurate or specific data regarding the treatment of splenic HC by PS. Results: There were 10 PS for HC. Six females and 4 males, ages between 16 and 41 (31Ã+-8.43), 9 with HC in the upper splenic pole (UP) treated by PS with lower pole (LP) preservation and one inferior pole HC treated by LP PS. There were 4 open, 2 laparoscopic and 4 robotic PS. There were no complications or recurrences at follow up (2 years). The literature review consists of 14 full-text articles, presenting 42 PS for HC. CONCLUSION: PS for HC is feasible, achieves complete removal of the cyst, while preserving splenic function. The procedure can be performed laparoscopically or robotically with the advantages of minimally invasive surgery.


Subject(s)
Echinococcosis , Splenectomy , Splenic Diseases , Humans , Splenectomy/methods , Echinococcosis/surgery , Splenic Diseases/surgery , Splenic Diseases/parasitology , Female , Treatment Outcome , Male , Adult , Adolescent , Retrospective Studies , Laparoscopy/methods
SELECTION OF CITATIONS
SEARCH DETAIL