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Histopathological, serological, and molecular confirmation of indigenous alveolar echinococcosis cases in Mongolia.

ABSTRACT: Alveolar echinococcosis cases diagnosed histopathologically in 2002, 2006, 2007, and 2009 in Ulaanbaatar, Mongolia were reconfirmed by evaluating the cytochrome c oxidase subunit I gene of mitochondrial DNA. The most recent three cases using paraffin-embedded and ethanol-fixed specimens revealed that one was of the "Asian" haplotype, whereas two others were of the "Inner Mongolian" type. All patients were born in the western provinces of Mongolia, they never resided outside of Mongolia, and they were given a preliminary diagnosis of malignant hepatic tumor or abscess. The most recent two cases were also confirmed serologically to be active alveolar echinococcosis.

SUBMITTER: Ito A

PROVIDER: S-EPMC2813168 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature

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Histopathological, serological, and molecular confirmation of indigenous alveolar echinococcosis cases in Mongolia.

Ito Akira A Agvaandaram Gurbadam G Bat-Ochir Oyun-Erdene OE Chuluunbaatar Batsaikhan B Gonchigsenghe Nyamkhuu N Yanagida Tetsuya T Sako Yasuhito Y Myadagsuren Narankhajid N Dorjsuren Temuulen T Nakaya Kazuhiro K Nakao Minoru M Ishikawa Yuji Y Davaajav Abmed A Dulmaa Nyamkhuu N

The American journal of tropical medicine and hygiene 20100201 2

Alveolar echinococcosis cases diagnosed histopathologically in 2002, 2006, 2007, and 2009 in Ulaanbaatar, Mongolia were reconfirmed by evaluating the cytochrome c oxidase subunit I gene of mitochondrial DNA. The most recent three cases using paraffin-embedded and ethanol-fixed specimens revealed that one was of the "Asian" haplotype, whereas two others were of the "Inner Mongolian" type. All patients were born in the western provinces of Mongolia, they never resided outside of Mongolia, and they ...[more]

PMID: 20134004

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Project description:IntroductionRecent experimental data has revealed that the course of alveolar echinococcosis (AE) depends on adaptive immunity. For this study, we aimed to analyze the incidence and outcome of AE in immunocompromised humans.Material and methodsRetrospective analysis of 131 patients with a median age of 54?years treated for AE between 1971 and 2017 at a Swiss tertiary referral Centre. Fifty-two percent were females and 65 patients (50%) were diagnosed incidentally. Fourteen patients (16%) were operated on laparoscopically. Overall, median follow-up was 48?months.ResultsNew diagnoses have increased fourfold in immunocompetent and tenfold in immunocompromised patients in the past decade (p???0.005). Forty-one patients (31.3%) had co-existing or previous immunosuppressive conditions including 16 malignancies (36%), 11 auto-immune diseases or immunosuppressive therapies (31%), 5 infectious diseases (11%), 4 chronic asthma conditions (9%), 2 previous transplantations (4%) and 4 other immunocompromising conditions (9%). Serum levels of anti-Em18, -Em2 and -EgHF antibodies were neither associated with immunocompetence at diagnosis nor during follow-up, but significantly decreased after treatment with benzimidazole (n?=?43) or surgery (n?=?88) in all patients. Adjuvant therapy for ?1?year (p?=?0.007) with benzimidazole and resection status (R0) (p?=?0.002) were both correlated with recurrence-free survival. Survival at 5 and 10?years after surgery was 97% and 94%, respectively, and after conservative treatment 91% and 73%, respectively. Curative surgery (p?=?0.014) and immunocompetence (p?=?0.048) correlated significantly with overall survival.ConclusionThe incidence of human AE has increased over the last 2 decades with surgical interventions resulting in excellent outcomes. We have observed an association of immunosuppressive conditions with both incidence and survival of AE eventually justifying the implementation of a screening program for patients at risk in endemic regions.

Project description:OBJECTIVE:This study is aimed at determining the preoperative nutritional status of patients with hepatic alveolar echinococcosis (HAE), and subsequently establish a concise and reasonable nutritional evaluation indicator. The established evaluation method could be used for clinical preoperative risk assessment and prediction of post-operation recovery. METHODS:The basic patient information on height, body weight, BMI and hepatic encephalopathy of 93 HAE patients were examined. Subsequently, abdominal ultrasonography, blood coagulation and liver function tests were done on the patients. Liver function was assessed using the Child-Pugh improved grading method while nutritional status was evaluated using the European Nutrition Risk Screening 2002 (NRS 2002) method. Additional parameters including hospitalization time, the hemoglobin (HGB) level on the 3rd day after the operation, and the number of postoperative complications of HAE patients were also recorded. RESULTS:The NRS 2002 score was negatively correlated with body weight, body mass index (BMI)and albumin (ALB) (P<0.01), and positively correlated with the transverse and longitudinal diameters of the lesions (P<0.01). A worse grading of liver function was associated with a low ALB and a high NRS 2002 score (P<0.01). Results of the NRS 2002 score indicate that the hospitalization time of the normal nutrition group was significantly shorter than that of the malnourished group (P < 0.05). The HGB level of the control group on the 3rd day after the operation was significantly higher than that of the malnourished group (P < 0.05), and the number of postoperative complications was lower than that of malnutrition group (P < 0.05). CONCLUSION:Malnutrition is common in HAE patients. The nutritional status of HAE patients is related to many clinical factors, such as Child-Pugh classification of liver function, size of the lesion, and ALB among others. Although both BMI and ALB can be used as primary screening indicators for malnutrition in HAE patients, NRS 2002 is more reliable and prudent in judging malnutrition in HAE patients. Therefore, BMI and ALB are more suitable for preoperative risk assessment and prediction of postoperative recovery.

Dataset Information

Histopathological, serological, and molecular confirmation of indigenous alveolar echinococcosis cases in Mongolia.

Publications

Histopathological, serological, and molecular confirmation of indigenous alveolar echinococcosis cases in Mongolia.

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