Azadeh Pourahmad, Babak Shirazi Yeganeh, Amir Abdoli, Zahra Kargar Jahromi, Akbar Kazemi, Ali Taghipour, Ali Rezanezhad, Hassan Rezanezhad
{"title":"Molecular detection of Toxoplasma gondii in paraffin blocks from patients diagnosed with various cancers.","authors":"Azadeh Pourahmad, Babak Shirazi Yeganeh, Amir Abdoli, Zahra Kargar Jahromi, Akbar Kazemi, Ali Taghipour, Ali Rezanezhad, Hassan Rezanezhad","doi":"10.1093/trstmh/traf083","DOIUrl":"https://doi.org/10.1093/trstmh/traf083","url":null,"abstract":"<p><p>This study aimed to investigate the prevalence of Toxoplasma gondii DNA in cancer tissue samples and explore potential associations with different cancer types. A total of 338 paraffin blocks from patients diagnosed with nine different cancers, including brain, lung, colon, breast, testis, prostate, uterus, ovary and eye, were analysed. The age distribution of the patients ranged from ≤30 to >70 y. The analysed sample consisted of 204 female and 134 male subjects. The molecular analysis revealed an overall prevalence of T. gondii DNA presence in 9.75% (33 cases) of the cancer tissue samples: 19 lung tissue samples, 6 colon samples, 5 breast samples and 1 sample each from the testis, prostate and uterus. Conversely, no T. gondii DNA was detected in the brain, ovary and eye samples. Statistical analysis using the χ2 test indicated a significant association between T. gondii and the type of cancer tissue, with a higher frequency in lung and colon tissues (p<0.001). However, there was no significant correlation observed between T. gondii infection and age or gender. These findings highlight potential links between T. gondii infection and specific cancer types, suggesting a need for further research to elucidate the underlying mechanisms and implications for cancer pathogenesis. Understanding the role of T. gondii in cancer development may offer new insights into preventive strategies and targeted treatments for T. gondii-associated malignancies. Further investigations are warranted to validate these associations, expand the sample size and explore the clinical significance of T. gondii infection in cancer patients.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144875391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sourish Kuttalam, John Benjamin Owens, Vishal Santra, Molla T Ahmed, Biswajit Das, Surojit Das, Ayan Koley, Rakesh Koley, Axel Barlow, Anita Malhotra
{"title":"Utilising snake rescue data to understand snake-human conflict in Hooghly, West Bengal, India.","authors":"Sourish Kuttalam, John Benjamin Owens, Vishal Santra, Molla T Ahmed, Biswajit Das, Surojit Das, Ayan Koley, Rakesh Koley, Axel Barlow, Anita Malhotra","doi":"10.1093/trstmh/trae124","DOIUrl":"10.1093/trstmh/trae124","url":null,"abstract":"<p><strong>Background: </strong>Snakebite envenoming, classified as a neglected tropical disease, poses a significant threat to life in India, where it is estimated to cause 58 000 fatalities as well as 140 000 morbidities annually. To reduce the occurrence of snakebite, we need a comprehensive understanding of human-snake conflict ecology. Snake rescue networks represent a vital resource for gathering such ecological data.</p><p><strong>Methods: </strong>In this study, we utilised snake rescue data from 520 rescue encounters carried out by a local rescue network in Hooghly, West Bengal, from July 2020 to October 2022, to investigate patterns of human-snake conflict and the influence of climatic factors on these patterns.</p><p><strong>Results: </strong>The spectacled cobra Naja naja was the most encountered of the five venomous species involved in 365 rescues. Our analysis revealed a significant correlation between rescue location and venomous/non-venomous encounters, with non-venomous encounters being more prevalent inside built-up locations. Rainfall on the previous day significantly increased encounters and influenced the species involved, while daily minimum temperature also influenced encounters with venomous species. We also found that both Bungarus (krait) species present were mostly encountered between 18:00 h and midnight.</p><p><strong>Conclusions: </strong>This study highlights the multifaceted factors influencing human-snake conflicts in the region, including seasonality, geographic location, rainfall patterns, and temperature dynamics. It underscores the potential of snake rescue data as a valuable resource for deepening our understanding of regional variations in snake-human interactions.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"971-981"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12342939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142923176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhammad Muneeb Hassan, Muhammad Aman Ullah, Muhammad Ameeq, Qudsia Sarwar, Alpha Kargbo
{"title":"Statistical modeling of acute diarrhea in pediatric malnutrition based on the assessment of nutritional status and clinical manifestations: a retrospective study in South-Punjab, Pakistan.","authors":"Muhammad Muneeb Hassan, Muhammad Aman Ullah, Muhammad Ameeq, Qudsia Sarwar, Alpha Kargbo","doi":"10.1093/trstmh/traf036","DOIUrl":"10.1093/trstmh/traf036","url":null,"abstract":"<p><strong>Background: </strong>Childhood severe acute malnutrition (SAM) remains an imperative global health concern, particularly in low- and middle-income countries with limited access to healthcare and nutrition services. The co-occurrence of diarrhea, a common gastrointestinal ailment in children, alongside SAM, amplifies the complexity and danger of the situation. We conducted a thorough investigation into the nutritional and clinical conditions of pediatric patients with SAM and diarrhea, while also exploring any possible gender-related clinical differences.</p><p><strong>Methods: </strong>The study involved 550 children with SAM and diarrhea, ultimately analyzing 485 children aged 1-37 mo. Multinomial logistic regression analysis and descriptive statistics were conducted to determine the impact of various clinical factors on the nutritional status of pediatric diarrhea patients with SAM using statistical software SPSS (version 25) and (R-Studio).</p><p><strong>Results: </strong>The study revealed a predominantly male population (72.8%) aged 1-10 mo (74.80%). Anthropometric measurements varied among the children, emphasizing the need for individualized interventions due to the complexity of this group. The study also investigated gender-related clinical factors and identified a lower likelihood of vomiting in males.</p><p><strong>Conclusions: </strong>This study highlights the nutritional and clinical hurdles faced by pediatric patients with SAM and diarrhea. Although some gender-related distinctions were observed, the overall clinical presentation remained relatively consistent.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"902-910"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahmed Hassan Fahal, Dallas J Smith, Ali Awadalla Saeed, Borna Nyaoke, Fabiana Alves, Kingsley Asiedu, Rod Hay
{"title":"Global health initiatives and mycetoma management: the unmet promise.","authors":"Ahmed Hassan Fahal, Dallas J Smith, Ali Awadalla Saeed, Borna Nyaoke, Fabiana Alves, Kingsley Asiedu, Rod Hay","doi":"10.1093/trstmh/traf001","DOIUrl":"10.1093/trstmh/traf001","url":null,"abstract":"","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"926-927"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12342892/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143123022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Regina Maia de Souza, Felipe Francisco Tuon, Leticia Ramos Dantas, Rui Imamura, Alexandre Pereira Funari, Beatriz Julieta Celeste, Valdir Sabbaga Amato
{"title":"Reactivation of cutaneous leishmaniasis in the context of non-HIV immunosuppression: a literature analysis.","authors":"Regina Maia de Souza, Felipe Francisco Tuon, Leticia Ramos Dantas, Rui Imamura, Alexandre Pereira Funari, Beatriz Julieta Celeste, Valdir Sabbaga Amato","doi":"10.1093/trstmh/traf038","DOIUrl":"10.1093/trstmh/traf038","url":null,"abstract":"<p><strong>Background: </strong>Immunosuppression increases the risk of primary cutaneous leishmaniasis (CL) infection and its reactivation. This systematic review examined CL reactivation in immunosuppressed patients, including those with autoimmune diseases and solid organ transplant recipients.</p><p><strong>Methods: </strong>A comprehensive literature search was conducted across multiple databases for studies published between May 1990 and May 2024.</p><p><strong>Results: </strong>Nine cases were selected, involving CL reactivation associated with immunosuppressive therapy for autoimmune diseases, such as rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis, or following renal transplantation.</p><p><strong>Conclusions: </strong>The management of CL during immunosuppressive therapy is challenging, necessitating different approaches for reactivation management.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"922-925"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144020034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Envenomation by 'dead' snakes: a review.","authors":"B Sadananda Naik","doi":"10.1093/trstmh/trae125","DOIUrl":"10.1093/trstmh/trae125","url":null,"abstract":"<p><p>Venomous snakes are a potential hazard even after their death. Dead snakes or their severed heads can inflict bites under various bizarre circumstances and may result in envenomation. In this review, an effort has been made to discuss the circumstances under which envenomation from dead snakes can occur, the incidence and pathomechanics of such envenomation, clinical manifestations and management and preventive measures, as well as a review of the literature on this unique mode of snake envenomation.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"928-932"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142923333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Antivenom ineffectiveness in Echis carinatus sochureki envenoming: a five-year, single-centre experience from India.","authors":"Maya Gopalakrishnan, Akhilesh Kumar Ph, Divya Tanwar, Samarth Bhat Ks, Bharat Choudhary, Mahendra K Garg","doi":"10.1093/trstmh/trae111","DOIUrl":"10.1093/trstmh/trae111","url":null,"abstract":"<p><strong>Background: </strong>Snakebite is a neglected tropical disease that causes significant morbidity and mortality in India. In this study, we describe the clinical characteristics and outcomes of Echis carinatus sochureki envenoming from Western Rajasthan. We document the clinical ineffectiveness of the currently available Indian polyvalent antivenom in managing E. c. sochureki envenoming.</p><p><strong>Methods: </strong>In this ambispective study, conducted from 14 April 2019 to 15 April 2024, we enrolled all patients presenting to our emergency department at a tertiary care centre in Jodhpur, Rajasthan, with a history of snakebite. After they provided informed consent, the demographic details, bite geo-location, bite-to-antivenom time, antivenom dose, coagulation profile, mortality and duration of hospital stay of those patients with E. c. sochureki envenoming were recorded.</p><p><strong>Results: </strong>Of 210 patients screened, 105 had E. c. sochureki envenoming, 103 venom-induced consumption coagulopathy, 36 (34.3%) local bleeding and 55 (52.3%) systemic bleeding. The median bite-to-antivenom time was 2 (IQR: 1.13-4.0) h. The median antivenom dose was 22 (IQR: 10-30) vials. Of 92 patients who received antivenom, 63 (68.4%) were unresponsive. Total antivenom dose and geographical location (West zone) were significant predictors of antivenom unresponsiveness. Fifty-three of 70 patients (75.7%) had delayed hypofibrinogenaemia. The mean hospital stay was 8.3±7.1 d with nine (8.6%) mortalities.</p><p><strong>Conclusions: </strong>Our study highlights the alarming finding of poor antivenom response to E. c. sochureki envenoming, with significant clinical bleeding and delayed coagulopathy. There is an urgent need for region-specific antivenom in Western India.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"943-953"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142923377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Disparities in unmet need for family planning: a comparative study of urban and rural women in Kano State, Nigeria.","authors":"Taiwo Ibinaiye, Babatunde Adelekan, Ummulkhulthum Bajoga, Sampson Ezikeanyi, Joachim Chijide, Collins Opiyo, Andat Dasogot, Koessan Kuawu","doi":"10.1093/trstmh/traf019","DOIUrl":"10.1093/trstmh/traf019","url":null,"abstract":"<p><p>This study investigated urban-rural differences in the prevalence of unmet need for family planning among women of reproductive age in Kano State, Nigeria, and identified factors contributing to these disparities. Rural-urban disparities in unmet need for family planning outcomes and women's characteristics were assessed. Univariate multilevel mixed-effect logistic regression models were employed to quantify the association between rural/urban residences and each unmet need for family planning and related outcomes. In urban areas, factors associated with unmet need for family planning included husband/partner (OR: 0.25, 95% CI 0.07 to 0.88, p=0.031) and joint decision-making about medical treatment (OR: 0.27, 95% CI 0.09 to 0.80, p=0.018). In rural areas, middle wealth categories (OR: 1.92, 95% CI 1.07 to 3.47, p=0.029), women with 3-4 (OR: 5.41, 95% CI 1.07 to 27.1, p=0.040) and ≥5 birth events (OR: 8.44, 95% CI 1.74 to 40.82, p=0.008) and those who work but are not paid in cash (OR: 0.46, 95% CI 0.21 to 0.99, p=0.049) were associated with unmet need for family planning. Tailored interventions considering socioeconomic, cultural and geographical factors are essential to reduce barriers to family planning services and promote informed decision-making among women in Kano State.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"839-847"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143433892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"First report on the enzootic maintenance of Dirofilaria sp. hongkongensis in the canine hosts and mosquito vector Armigeres subalbatus (Coquillet) in Puducherry.","authors":"Jagatheesh Manikannan, Uma Sambath, Krishan Kumar Sihag, Waseema Arif, Srikanth Srirama, Abiramy Prabavathy A, Kumar Raja, Manju Rahi, Mathivanan Ashokkumar, Panneer Devaraju","doi":"10.1093/trstmh/traf037","DOIUrl":"10.1093/trstmh/traf037","url":null,"abstract":"<p><strong>Background: </strong>Dirofilariasis is a re-emerging zoonosis caused by the nematode Dirofilaria spp., parasitizing canines, felines and humans and transmitted by mosquito vectors of the Culicidae family. Currently, reports of human dirofilariasis are increasing in India and thus we explored the occurrence of Dirofilaria infection among dogs and mosquitoes in Puducherry, India.</p><p><strong>Methods: </strong>Two millilitres of blood collected from 293 dogs from Puducherry was subjected to microscopy and Dirofilaria screening polymerase chain reaction (PCR) targeting the ITS2 gene. Mosquitoes trapped from areas with filaria-positive dogs were also subjected to PCR and representative samples were dissected for microscopy. The partially amplified ITS1, COX1 and 12s recombinant RNA genes from positive samples were sequenced for phylogeny.</p><p><strong>Results: </strong>Only 4 among the 293 dogs tested positive for Dirofilaria by microscopy and PCR and the parasite was identified as Dirofilaria sp. hongkongensis. None of the mosquito pools (n=39) tested positive by PCR. However, the presence of microfilaria and larvae was evident in Armigeres subalbatus (n=2) mosquitoes.</p><p><strong>Conclusions: </strong>The abundance of the vectors, susceptible dog population and ecosystem in Puducherry confers a congenial niche for the parasite and poses a risk for human transmission. Implementation of one health-based control measure would help to curtail the infection.</p>","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"911-918"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143754774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corrigendum to: Haemotoxicity of snakes: a review of pathogenesis, clinical manifestations, novel diagnostics and challenges in management.","authors":"","doi":"10.1093/trstmh/traf021","DOIUrl":"10.1093/trstmh/traf021","url":null,"abstract":"","PeriodicalId":23218,"journal":{"name":"Transactions of The Royal Society of Tropical Medicine and Hygiene","volume":" ","pages":"982-984"},"PeriodicalIF":1.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143558176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}