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Co-infections of rickettsiales in clinically healthy, Leishmania infantum seropositive and seronegative dogs: a systematic literature review and new findings from Southern Italy.
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-29 DOI: 10.1007/s00436-025-08458-4
Oana Gusatoaia, Livia Perles, Maria Alfonsa Cavalera, Annamaria Uva, Floriana Gernone, Domenico Otranto, Andrea Zatelli
{"title":"Co-infections of rickettsiales in clinically healthy, Leishmania infantum seropositive and seronegative dogs: a systematic literature review and new findings from Southern Italy.","authors":"Oana Gusatoaia, Livia Perles, Maria Alfonsa Cavalera, Annamaria Uva, Floriana Gernone, Domenico Otranto, Andrea Zatelli","doi":"10.1007/s00436-025-08458-4","DOIUrl":"10.1007/s00436-025-08458-4","url":null,"abstract":"<p><p>Canine leishmaniosis (CanL), caused by Leishmania infantum, is a widespread vector-borne disease. In Italy, an endemic region for CanL, overlapping transmission of L. infantum and tick-borne pathogens (TBPs) like Anaplasma phagocytophilum and Ehrlichia canis is increasingly reported. Dogs with clinical leishmaniosis often show higher co-infection rates and pronounced clinicopathological abnormalities. This study presents a systematic literature review and new findings from southern Italy, focusing on co-infections with E. canis and A. phagocytophilum in clinically healthy L. infantum seropositive and seronegative dogs. The systematic review identified two eligible studies. The first reported 34/488 (7%) dogs L. infantum seropositive, with 11.8% also seropositive for A. phagocytophilum. Among 454 seronegative dogs, 3% were seropositive for A. phagocytophilum and 2.4% for E. canis. The second study identified 154/1260 (12.2%) dogs L. infantum seropositive, with co-infection rates of 0.6% and 1.9% for A. phagocytophilum and E. canis, respectively. Among 1106 seronegative dogs, 1.3% were seropositive for A. phagocytophilum and 2.3% for E. canis. In the retrospective study from southern Italy, 90/154 (58.4%) dogs were L. infantum seropositive, with co-infection rates of 4.4% for A. phagocytophilum and 2.2% for A. phagocytophilum and E. canis. Among 64 seronegative dogs, 1.6% showed similar co-infections. This is the first systematic review in Italy, documenting low and comparable co-infection rates with A. phagocytophilum and E. canis in clinically healthy dogs, regardless of L. infantum serostatus. These findings suggest that co-infections may occur independently, offering insights into vector-borne disease dynamics in endemic areas.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 2","pages":"14"},"PeriodicalIF":1.8,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11779695/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143059736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long-term symptoms in children after a Cryptosporidium hominis outbreak in Sweden: a 10-year follow-up.
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-25 DOI: 10.1007/s00436-025-08455-7
Marije Boks, Mikael Lilja, Anna Lindam, Micael Widerström, Angelica Persson, Pontus Karling, Malin Sjöström
{"title":"Long-term symptoms in children after a Cryptosporidium hominis outbreak in Sweden: a 10-year follow-up.","authors":"Marije Boks, Mikael Lilja, Anna Lindam, Micael Widerström, Angelica Persson, Pontus Karling, Malin Sjöström","doi":"10.1007/s00436-025-08455-7","DOIUrl":"10.1007/s00436-025-08455-7","url":null,"abstract":"<p><p>In 2010, a Cryptosporidium hominis outbreak resulted in 27,000 clinical cryptosporidiosis cases (45% of the population) in Östersund, Sweden. Long-term abdominal and joint symptoms are common following cryptosporidiosis in adults, and it can affect the development of children in low-income countries. We investigated the potential consequences for children in a high-income setting. In 2011, we prospectively surveyed 600 randomly selected children aged 0-5 years from Östersund. Cases were defined as respondents reporting new episodes of diarrhoea during the outbreak. After 10 years, respondents received a follow-up questionnaire about long-term symptoms (n = 423). We used X<sup>2</sup> and Mann-Whitney U tests to assess between-group differences in demographics and the mean number of symptoms. Logistic regressions adjusted for sex, age, and prior issues with loose stools were used to examine associations between case status and symptoms reported at follow-up. We retrieved data on healthcare visits from patient records. In total, 121 cases and 174 non-cases responded to the follow-up questionnaire (69.7%). Cases reported 1.74 (median 1.00, range 0-14) symptoms and non-cases 1.37 (median 0.00, range 0-11) symptoms (p = 0.029). Cases were more likely to report joint symptoms (aOR 4.0, CI 1.3-12.0) and fatigue (aOR 1.9, CI 1.1-3.4), but numbers were generally low. We found no between-group differences in abdominal symptoms, healthcare utilization, or disease diagnoses. Children aged 0-5 years from high-income countries may experience long-term symptoms after cryptosporidiosis, but may not be affected to the same extent as adults or their peers living in low-income countries.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"13"},"PeriodicalIF":1.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11762772/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143040968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunomodulatory activity of Trypanosoma cruzi recombinant antigen combination TSA-1-C4 and Tc24-C4 induce activation of macrophages and CD8+ T cells.
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-24 DOI: 10.1007/s00436-025-08453-9
Victor Manuel Dzul-Huchim, Miguel Rosado-Vallado, Antonio Euan-Canto, Julio Torres-Romero, Jaime Ortega-Lopez, Julio Vladimir Cruz-Chan, Liliana Estefania Villanueva-Lizama, Victor Arana-Argáez
{"title":"Immunomodulatory activity of Trypanosoma cruzi recombinant antigen combination TSA-1-C4 and Tc24-C4 induce activation of macrophages and CD8<sup>+</sup> T cells.","authors":"Victor Manuel Dzul-Huchim, Miguel Rosado-Vallado, Antonio Euan-Canto, Julio Torres-Romero, Jaime Ortega-Lopez, Julio Vladimir Cruz-Chan, Liliana Estefania Villanueva-Lizama, Victor Arana-Argáez","doi":"10.1007/s00436-025-08453-9","DOIUrl":"10.1007/s00436-025-08453-9","url":null,"abstract":"<p><p>Chagas disease is a chronic infection caused by the protozoan parasite, Trypanosoma cruzi, with limited benefits of the currently available anti-parasitic chemotherapeutic approaches to halt the progression of heart disease. Recombinant TSA-1-C4 and Tc24-C4 proteins have been developed as promising antigen candidates for therapeutic vaccines, leading to propose them in combination as a bivalent recombinant protein strategy. In this study, we evaluated the immunomodulatory effect of the combined TSA-1-C4 and Tc24-C4 recombinant proteins by in vitro assays using murine macrophages. Macrophages from naïve Balb/c mice were isolated and stimulated with TSA-1-C4 plus Tc24-C4 recombinant proteins, hence, supernatants were recovered to measure host NO, H<sub>2</sub>O<sub>2</sub>, as well as, TNF-α, IL-1β, IL-6 and IL-10 cytokine responses. Later, stimulated macrophages were co-cultured with CD8<sup>+</sup> T cells from naïve mice, and inflammatory cytokine-profiles were measured from supernatants. We observed that combining both antigens promotes the activation of host macrophages by NO and H<sub>2</sub>O<sub>2</sub> release; moreover, these macrophages also induced considerable pro-inflammatory immune-responses mediated by TNF-, IL-1β and IL-6 cytokines compared to either TSA-1-C4 or Tc24-C4 stimulated macrophages. In addition, naïve CD8<sup>+</sup> T cells in presence of TSA-1-C4 plus Tc24-C4 stimulated-macrophages similarly boosted the pro-inflammatory immune profile by significant production of IFN-γ and TNF-α cytokines. These results support immunological advantages for the use of TSA-1-C4 and Tc24-C4 combination as vaccine candidates against T. cruzi.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"12"},"PeriodicalIF":1.8,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11761814/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143059720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of Lactobacillus acidophilus (L. acidophilus) therapeutic and prophylactic role in rats experimentally infected with Blastocystis subtype 3 (ST3).
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-23 DOI: 10.1007/s00436-024-08444-2
Sara Fathy Hamed Alkady, Heba Mohamed Awad El Naggar, Hala Sobhy Thabet, Hoda S El-Sayed, Mona Magdy, Iman Ahmed Fahmy, Hanan Mahmoud Abou-Seri
{"title":"Assessment of Lactobacillus acidophilus (L. acidophilus) therapeutic and prophylactic role in rats experimentally infected with Blastocystis subtype 3 (ST3).","authors":"Sara Fathy Hamed Alkady, Heba Mohamed Awad El Naggar, Hala Sobhy Thabet, Hoda S El-Sayed, Mona Magdy, Iman Ahmed Fahmy, Hanan Mahmoud Abou-Seri","doi":"10.1007/s00436-024-08444-2","DOIUrl":"10.1007/s00436-024-08444-2","url":null,"abstract":"<p><p>Blastocystis, an eukaryote, inhabits the intestinal tract of humans and animals worldwide. Lactobacillus acidophilus (L. acidophilus), a probiotic, has been reported to be effective against blastocystosis. The present study evaluated the therapeutic and prophylactic effectiveness of L. acidophilus compared to metronidazole (MTZ) in rats experimentally infected with Blastocystis subtype 3 (ST3). Four groups of Blastocystis ST3-infected rats received MTZ, L. acidophilus, both MTZ and L. acidophilus, or prophylactic L. acidophilus. Non-infected and infected control groups were included. The effectiveness of treatment and prevention was evaluated using parasitological monitoring, histopathological examination, immunohistochemical staining for TNF-α and IgA expression, and immunological testing for TNF-α and IL-10. In the L. acidophilus-treated group, a 76% reduction in the mean fecal parasitic count and a 67% clearance in the intestinal wash were achieved aligning closely with outcomes observed in the MTZ-treated group. An immunomodulatory impact via upregulation of the anti-inflammatory cytokine IL-10 and downregulation of the pro-inflammatory cytokine TNF-α was demonstrated as well. Combined administration of MTZ and L. acidophilus exhibited superior efficacy with a 99% decrease in the mean fecal parasitic count and a 98% decrease in the intestinal fluid parasitic count. Additionally, the lowest TNF-α and the highest IL-10 serum levels. Prophylactic use of L. acidophilus for 7 days neither prevented infection nor reduced its severity. Furthermore, no significant differences were detected in serum levels of TNF-α and IL-10 following post-prophylaxis and post-treatment with L. acidophilus. Accordingly, L. acidophilus might be recommended as an adjuvant treatment alongside MTZ for improved efficacy against blastocystosis.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"11"},"PeriodicalIF":1.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143024378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphological and molecular characteristics of swine coccidia based on single oocyst isolation. 基于单卵囊分离的猪球虫形态学和分子特征。
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-21 DOI: 10.1007/s00436-025-08456-6
Nanhao Wang, Yingying Zhang, Shuqi Cheng, Xinyi Chen, Yufeng Liu, Fa Shan, Wei Su, Xiaoying Li, Longxian Zhang, Sumei Zhang, Junqiang Li
{"title":"Morphological and molecular characteristics of swine coccidia based on single oocyst isolation.","authors":"Nanhao Wang, Yingying Zhang, Shuqi Cheng, Xinyi Chen, Yufeng Liu, Fa Shan, Wei Su, Xiaoying Li, Longxian Zhang, Sumei Zhang, Junqiang Li","doi":"10.1007/s00436-025-08456-6","DOIUrl":"10.1007/s00436-025-08456-6","url":null,"abstract":"<p><p>Swine coccidiosis is a host-specific protozoan disease caused by Cystoisospora suis and various Eimeria species, leading to diarrhea or subclinical signs in pigs. In this study, 3296 fecal samples from 55 farms across six provinces in China were collected and examined to determine the prevalence and molecular characteristics of swine coccidia. The single oocyst isolation technique (SOIT) and molecular characterization identified nine coccidian species, with an overall infection prevalence of 13.83%. Infection rates varied by locations, host age groups, and sampling seasons. Among the positive swine coccidia samples, Cystoisospora suis showed the highest prevalence at 58.77%, followed by eight Eimeria spp<sub>.</sub> species. SOIT along with molecular characterization of C. suis at the SSU rRNA and ITS rRNA gene loci revealed the sequence homology from 99.8 to 100.0%. Additionally, the eight species of Eimeria<sub>.</sub> exhibited a high degree of sequence homology at the SSU rRNA and COX I gene loci. Due to the limitation of single molecular marker genes, this study introduced SOIT for DNA extraction, followed by nested PCR amplification of the SSU rRNA, ITS rRNA, and COX I gene loci to identify swine coccidia. This study is the first to systematically evaluate the prevalence and genetic diversity of coccidia in Chinese pig farms by SOIT, offering a method for accurately identifying swine coccidiosis and a scientific foundation for its effective prevention and control.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"10"},"PeriodicalIF":1.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143009333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Activation of the COX-2/mPGES-1/PGE-2 cascade through the NLRP3 inflammasome contributes to Angiostrongylus cantonensis-induced eosinophilic meningoencephalitis. 通过NLRP3炎症小体激活COX-2/mPGES-1/PGE-2级联有助于广州管圆线虫诱导的嗜酸性脑膜脑炎。
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-20 DOI: 10.1007/s00436-025-08454-8
Ke-Min Chen, Cheng-You Lu, Shih-Chan Lai
{"title":"Activation of the COX-2/mPGES-1/PGE-2 cascade through the NLRP3 inflammasome contributes to Angiostrongylus cantonensis-induced eosinophilic meningoencephalitis.","authors":"Ke-Min Chen, Cheng-You Lu, Shih-Chan Lai","doi":"10.1007/s00436-025-08454-8","DOIUrl":"10.1007/s00436-025-08454-8","url":null,"abstract":"<p><p>Prostaglandin E2 (PGE-2) is synthesised by cyclooxygenase-2 (COX-2) and microsomal prostaglandin E synthase 1 (mPGES-1). PGE-2 exhibits pro-inflammatory properties in inflammatory conditions. However, there remains limited understanding of the COX-2/mPGES-1/PGE-2 pathway in Angiostrongylus cantonensis-induced meningoencephalitis. This study revealed several key findings regarding the activation of the COX-2/mPGES-1/PGE-2 pathway and its correlation with eosinophilic meningoencephalitis induced by A. cantonensis infection. Immunostaining revealed an increase in the expression of COX-2 and mPGES-1 in the subarachnoid space and glial cells compared to control subjects. Inhibition of the NLRP3 inflammasome by small interfering RNA (siRNA) blocked extracellular secretory proteins (ESPs) stimulated COX-2, mPGES-1 and PGE-2 in microglia. MCC950, an NLRP3 inhibitor, inhibited the levels of the COX-2, mPGES-1, and PGE-2 proteins induced by A. cantonensis in mice. Treatment of mice infected with A. cantonensis with the COX-2 inhibitor NS398 significantly reduced the levels of mPGES-1, PGE-2, and matrix metalloproteinase-9 (MMP-9) levels. Similarly, the mPGES-1 inhibitor MF63 significantly reduced PGE-2 and MMP-9 levels in A. cantonensis-infected mice. Administration of MCC950, NS398, or MF63 resulted in marked attenuation of blood-brain barrier (BBB) permeability and eosinophil counts in A. cantonensis-infected mice. These findings highlight the critical role of the COX-2/mPGES-1/PGE-2 pathway and its regulation by the NLRP3 inflammasome in the pathogenesis of eosinophilic meningoencephalitis induced by A. cantonensis infection. Furthermore, pharmacological interventions targeting this pathway, such as MCC950, NS398, and MF63, show promising therapeutic potential in mitigating associated inflammatory responses and disruption of the BBB. The results indicate that blocking NLRP3 using pharmacological (MCC950) and gene silencing (siNLRP3) methods emphasised the crucial involvement of NLRP3 in the COX-2/mPGES-1/PGE-2 pathway. This suggests that the activation of the COX-2/mPGES-1/PGE-2 axis in response to A. cantonensis infection may be mediated through a mechanism involving the NLRP3 inflammasome.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"9"},"PeriodicalIF":1.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11753341/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143009326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tick salivary cystatin Iristatin limits the virus replication in skin of tick-borne encephalitis virus-infected mice. 蜱唾液胱抑素伊司他汀限制病毒在蜱传脑炎病毒感染小鼠皮肤中的复制。
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-17 DOI: 10.1007/s00436-024-08441-5
Helena Langhansová, Zuzana Beránková, Ritesh Khanna, Jan Kotál, Michail Kotsyfakis, Martin Palus, Jaroslava Lieskovská
{"title":"Tick salivary cystatin Iristatin limits the virus replication in skin of tick-borne encephalitis virus-infected mice.","authors":"Helena Langhansová, Zuzana Beránková, Ritesh Khanna, Jan Kotál, Michail Kotsyfakis, Martin Palus, Jaroslava Lieskovská","doi":"10.1007/s00436-024-08441-5","DOIUrl":"10.1007/s00436-024-08441-5","url":null,"abstract":"<p><p>Tick-borne encephalitis virus (TBEV) is flavivirus transmitted to the host via tick saliva which contains various molecules with biological impacts. One of such molecules is Iristatin, a cysteine protease inhibitor from Ixodes ricinus that has been shown to have immunomodulatory properties. To characterize Iristatin in the relation to TBEV, we investigate whether this tick inhibitor has any capacity to influence TBEV infection. Mice were intradermally infected by TBEV with or without Iristatin and the viral multiplication was determined in skin and brain tissues by RT-PCR two and 5 days after infection. The viral RNA was detected in both intervals in skin and increased by time. The application of Iristatin caused a reduction in viral RNA in skin but not in the brain of infected mice 5 days post-infection. Moreover, anti-viral effect of Iristatin on skin was accompanied by a significant decline of interferon-stimulated gene 15 gene expression. The effect of Iristatin on TBEV replication was tested also in vitro in primary macrophages and dendritic cells; however, no changes were observed suggesting no direct interference of Iristatin with virus replication. Still, the Iristatin caused a suppression of Erk1/2 phosphorylation in TBEV-infected dendritic cells and had the anti-apoptotic effect. This is the first report showing that a tick cystatin decreases the viral RNA in the host skin, likely indirectly through creating skin environment that is less supportive for TBEV replication. Assuming, that viral RNA reflects the amount of infectious virus, decline of TBEV in host skin could influence the tick biology or virus transmission during cofeeding.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"8"},"PeriodicalIF":1.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11739226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143009523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prevalence and molecular characterisation of Balantioides coli in pigs raised in Italy. 意大利养殖猪中大肠杆菌的流行和分子特征。
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-16 DOI: 10.1007/s00436-025-08452-w
Carolina Allievi, Francisco Ponce-Gordo, Luca Villa, Alessandro Zanon, Marco Valleri, Sergio Aurelio Zanzani, Michele Mortarino, Maria Teresa Manfredi
{"title":"Prevalence and molecular characterisation of Balantioides coli in pigs raised in Italy.","authors":"Carolina Allievi, Francisco Ponce-Gordo, Luca Villa, Alessandro Zanon, Marco Valleri, Sergio Aurelio Zanzani, Michele Mortarino, Maria Teresa Manfredi","doi":"10.1007/s00436-025-08452-w","DOIUrl":"10.1007/s00436-025-08452-w","url":null,"abstract":"<p><p>Balantioides coli is the only ciliated protist of both human and veterinary interest and colonises the large intestine of several hosts, including humans and pigs. Given the scarcity of data on B. coli circulation in pigs in Italy, a study was planned to record its prevalence and genetic types and compare the analytical sensitivity of two copromicroscopic techniques. For this purpose, 880 faecal samples were collected from pigs raised in 22 farms located in northern Italy and analysed with the sedimentation and the FLOTAC® dual technique, employing sodium chloride and zinc sulphate flotation solutions, and the Cohen's kappa coefficient was calculated to assess the agreement between these methods. Conventional PCR to amplify the ribosomal internal transcribed spacer region (ITS) was subsequently performed on 22 samples, one for each farm, which were positive for B. coli cysts by sedimentation; when more than one sequence was detected in the chromatograms, the PCR products were cloned. Overall, 813 samples were positive for B. coli cysts by sedimentation (92.4%), and moderate concordance with the zinc-based FLOTAC® technique was observed, whereas the agreement was slight with the salt-based FLOTAC® technique. Among the 22 sequenced samples, type B was amplified in 19 samples, type A in two samples, and both A and B types were co-expressed in one sample. This study demonstrated a high prevalence of B. coli in Italian pigs; further insights are needed to trace its distribution and genetic polymorphism in other pig production categories and in humans, defining its public health significance.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"6"},"PeriodicalIF":1.8,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11735580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143009336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Epidemiological and genotypic assessment of cystic echinococcosis in ruminant populations of Northern Punjab, Pakistan: a neglected zoonotic disease. 巴基斯坦旁遮普北部反刍动物种群囊性棘球蚴病的流行病学和基因型评估:一种被忽视的人畜共患疾病。
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-16 DOI: 10.1007/s00436-025-08451-x
Sakandar Khan, Jo Cable, Numair Masud, Frank Hailer, Muhammad Younus, Naveed Hussain, Muhammad Asif Idrees, Muhammad Imran Rashid, Haroon Akbar
{"title":"Epidemiological and genotypic assessment of cystic echinococcosis in ruminant populations of Northern Punjab, Pakistan: a neglected zoonotic disease.","authors":"Sakandar Khan, Jo Cable, Numair Masud, Frank Hailer, Muhammad Younus, Naveed Hussain, Muhammad Asif Idrees, Muhammad Imran Rashid, Haroon Akbar","doi":"10.1007/s00436-025-08451-x","DOIUrl":"10.1007/s00436-025-08451-x","url":null,"abstract":"<p><p>Echinococcus granulosus is a zoonotic dog parasite, which causes cystic echinococcosis in humans and animals, adversely affecting health and food production. The resultant socio-economic impacts in lower-middle-income countries and the paucity of epidemiology data prompted the World Health Organization to classify cystic echinococcosis as a neglected tropical disease. Between November 2019 and December 2020, the prevalence of cystic echinococcosis was assessed from 3600 post-slaughter livestock (1142 sheep, 1258 goats and 1200 buffalo) from three districts, Narowal, Sheikhupura and Sialkot, in Northern Punjab, Pakistan. The collected hydatid cysts were subjected to microscopy and PCR followed by Sanger sequencing and phylogenetic analysis. A questionnaire targeted 3600 animal owners to assess disease risk factors. Of the 28 cyst samples sequenced for mtDNA COI, the species was confirmed as Echinococcus granulosus and phylogenetic analysis revealed the presence of both G1 and G3 lineages. Overall, we noted a regional difference in prevalence, where infections were significantly higher in Sheikhupura (9.8%) than Sialkot (6.1%) or Narowal (5.9%) districts. Prevalence was higher in buffalo (9.3%) than sheep (7%) or goats (5.5%), significantly higher (9.3%) in older (> 4 years) compared to younger (< 4 years) animals (5.7%) and higher in females (9.1%) compared to males (3.8%). In sheep and buffalo, more cysts were found in the liver (77.7% and 68.7%, respectively), whereas the lungs were more commonly infected in goats (67.1%). Epidemiological data revealed that combining dog deworming with effective disposal of viscera is needed for a significant reduction in infection prevalence. Similarly, animal deworming was only associated with significantly reduced infections when the animals were not kept near an abattoir, where dogs would normally be present and feeding on discarded viscera. This study adds to growing evidence that simple public health measures and awareness are needed to reduce the prevalence of cystic echinococcosis infection.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"7"},"PeriodicalIF":1.8,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11739240/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143009330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regulatory B cells in parasitic infections: roles and therapeutic potential. 调节性B细胞在寄生虫感染中的作用和治疗潜力。
IF 1.8 3区 医学
Parasitology Research Pub Date : 2025-01-15 DOI: 10.1007/s00436-024-08450-4
Haojun Cai, Qianqian Mu, Haiting Xiong, Meichen Liu, Fengjiao Yang, Ling Zhou, Biying Zhou
{"title":"Regulatory B cells in parasitic infections: roles and therapeutic potential.","authors":"Haojun Cai, Qianqian Mu, Haiting Xiong, Meichen Liu, Fengjiao Yang, Ling Zhou, Biying Zhou","doi":"10.1007/s00436-024-08450-4","DOIUrl":"10.1007/s00436-024-08450-4","url":null,"abstract":"<p><p>Parasitic infection is a complex process involving interactions among various immune cells. Regulatory B cells (Breg cells), a subset of B lymphocytes with immunosuppressive functions, play a role in modulating immune responses during infection to prevent excessive immune activation. This article reviews the origin, phenotype, and immunoregulatory mechanisms of Breg cells. We summarize the immunomodulatory roles of Breg cells in various parasitic infections. We also discuss the potential applications of activating Breg cells through parasitic infections and their derived molecules in the treatment of certain allergic, autoimmune, and inflammatory diseases. The aim is to provide new perspectives for the future treatment of parasitic diseases and other related conditions.</p>","PeriodicalId":19968,"journal":{"name":"Parasitology Research","volume":"124 1","pages":"5"},"PeriodicalIF":1.8,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732949/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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