Molecular survey of hemoplasmas in asymptomatic vicunas (Vicugna vicugna) from the Pampa Galeras B árbara D'Achille National Reserve in Peru
Acta Trop. 2023 Nov 11:107074. doi: 10.1016/j.actatropica.2023.107074. Online ahead of print.ABSTRACTHemotrophic mycoplasmas (hemoplasmas) are epierythrocytic bacteria that infect wild and domestic animals, and can cause anemia in some of them. They are considered emerging and zoonotic pathogens, causing serious health problems in wildlife. Candidatus Mycoplasma haemolamae is the only species of hemoplasma that infects domestic South American camelids (alpacas and llamas), with limited studies in wild camelids. Therefore, the objective of this study was to determine the prevalence of Candidatus M. haemolamae in vicunas (Vi...
Source: Acta Tropica - November 13, 2023 Category: Infectious Diseases Authors: Luis A Gomez-Puerta Juan Olazabal Santiago Paredes Juan Lopez Miguel Anampa Angelica Mondragon Ana Vargas-Calla Hugo Castillo Source Type: research
High risk of spoliation by bats in an indigenous village in Brazil: Warning of the re-emergence of rabies among the Maxakali People
Acta Trop. 2023 Nov 11:107073. doi: 10.1016/j.actatropica.2023.107073. Online ahead of print.ABSTRACTBat-mediated human rabies is a viral zoonotic disease that poses a serious threat to the public health of traditional peoples, especially indigenous populations that maintain primitive cultural and social habits, such as the Maxakali ethnic group, located in the southeastern region of Brazil. The sociocultural habit of this population led to the emergence between April and May 2022 of the viral spillover of rabies transmitted by bats, which decimated the lives of four children from this population who maintained contact wit...
Source: Acta Tropica - November 13, 2023 Category: Infectious Diseases Authors: Dilceu Silveira Tolentino J únior Source Type: research
Natural SARS-CoV-2 infection in dogs: Determination of viral loads, distributions, localizations, and pathology
This study considerably expanded on the knowledge of the pathology associated with natural SARS-CoV-2 infection in dogs, a scenario that is relatively infrequent but occasionally leads to fatal outcome. Furthermore, these findings suggest the potential utility of dogs as a model for studying SARS-CoV-2 infection in humans, warranting further investigation.PMID:37956819 | DOI:10.1016/j.actatropica.2023.107070 (Source: Acta Tropica)
Source: Acta Tropica - November 13, 2023 Category: Infectious Diseases Authors: Chutchai Piewbang Panida Poonsin Pattiya Lohavicharn Panitnan Punyathi Sawang Kesdangsakonwut Tanit Kasantikul Somporn Techanagmsuwan Source Type: research
Species and seasonality can affect recent trends in beak and feather disease virus prevalence in captive psittacine birds
In conclusion, our analysis of the trends in BFDV prevalence offers valuable insights into the prevalence or distribution of BFDV in the studied population. By monitoring BFDV prevalence, identifying high-risk species, and understanding seasonal patterns, we can develop targeted management approaches to control the spread of the virus. This information is crucial for mitigating the impact of BFDV on aviculture.PMID:37956820 | DOI:10.1016/j.actatropica.2023.107071 (Source: Acta Tropica)
Source: Acta Tropica - November 13, 2023 Category: Infectious Diseases Authors: A Saechin P Suksai L Sariya C Mongkolphan S Tangsudjai Source Type: research
Molecular survey of hemoplasmas in asymptomatic vicunas (Vicugna vicugna) from the Pampa Galeras B árbara D'Achille National Reserve in Peru
Acta Trop. 2023 Nov 11:107074. doi: 10.1016/j.actatropica.2023.107074. Online ahead of print.ABSTRACTHemotrophic mycoplasmas (hemoplasmas) are epierythrocytic bacteria that infect wild and domestic animals, and can cause anemia in some of them. They are considered emerging and zoonotic pathogens, causing serious health problems in wildlife. Candidatus Mycoplasma haemolamae is the only species of hemoplasma that infects domestic South American camelids (alpacas and llamas), with limited studies in wild camelids. Therefore, the objective of this study was to determine the prevalence of Candidatus M. haemolamae in vicunas (Vi...
Source: Acta Tropica - November 13, 2023 Category: Infectious Diseases Authors: Luis A Gomez-Puerta Juan Olazabal Santiago Paredes Juan Lopez Miguel Anampa Angelica Mondragon Ana Vargas-Calla Hugo Castillo Source Type: research
Anti-babesial activity of a series of 6,7-dimethoxyquinazoline-2,4-diamines (DMQDAs)
Acta Trop. 2023 Nov 10:107069. doi: 10.1016/j.actatropica.2023.107069. Online ahead of print.ABSTRACTDiminazene aceturate (DA), imidocarb dipropionate (ID), atovaquone (ATO), azithromycin (AZI), clindamycin, and quinine have been used to treat animal and human babesiosis for many years, despite their negative effects and rising indications of resistance. Thus, finding anti-babesial compounds that can either treat the infection or lower the dose of drugs given has been a primary objective. Quinazolines are one of the most important nitrogen heterocycles, with a wide range of pharmacological activities including analgesic, a...
Source: Acta Tropica - November 12, 2023 Category: Infectious Diseases Authors: Shengwei Ji Mohamed Abdo Rizk Eloiza May Galon El-Sayed El-Alfy Yuki Mizukawa Masayoshi Kojima Mayumi Ikegami-Kawai Motohiro Kaya Mingming Liu Isamu Itoh Xuenan Xuan Source Type: research
Pre- and post-surgical evaluation of the impact on hansen disease sequealae patients' quality of life submitted to orthopedic surgery for closure of chronic plantar ulcers
CONCLUSION: Orthopedic surgical treatment with resection of plantar bony prominences and skin grafting is an effective therapeutic method for closing chronic plantar ulcers in leprosy, resulting in a decrease in the financial costs employed and in an important improvement in the Quality-of-Life parameters of the individuals undergoing to this procedure. The availability and regular use of shoes and insoles is crucial to prevent recurrence of these injuries.PMID:37952867 | DOI:10.1016/j.actatropica.2023.107019 (Source: Acta Tropica)
Source: Acta Tropica - November 12, 2023 Category: Infectious Diseases Authors: Francisco Mateus Jo ão Silmara Navarro Pennini Lu íza Garnelo Zanair Soares Vasconcelos Sin ésio Talhari Marcello Facundo do Valle Guilherme Miranda Silva de Oliveira Jessica Vanine Ortiz Arin éia Soares da Silva R ômulo Freitas de Morais Maria das G Source Type: research
Anti-babesial activity of a series of 6,7-dimethoxyquinazoline-2,4-diamines (DMQDAs)
Acta Trop. 2023 Nov 10:107069. doi: 10.1016/j.actatropica.2023.107069. Online ahead of print.ABSTRACTDiminazene aceturate (DA), imidocarb dipropionate (ID), atovaquone (ATO), azithromycin (AZI), clindamycin, and quinine have been used to treat animal and human babesiosis for many years, despite their negative effects and rising indications of resistance. Thus, finding anti-babesial compounds that can either treat the infection or lower the dose of drugs given has been a primary objective. Quinazolines are one of the most important nitrogen heterocycles, with a wide range of pharmacological activities including analgesic, a...
Source: Acta Tropica - November 12, 2023 Category: Infectious Diseases Authors: Shengwei Ji Mohamed Abdo Rizk Eloiza May Galon El-Sayed El-Alfy Yuki Mizukawa Masayoshi Kojima Mayumi Ikegami-Kawai Motohiro Kaya Mingming Liu Isamu Itoh Xuenan Xuan Source Type: research
Pre- and post-surgical evaluation of the impact on hansen disease sequealae patients' quality of life submitted to orthopedic surgery for closure of chronic plantar ulcers
CONCLUSION: Orthopedic surgical treatment with resection of plantar bony prominences and skin grafting is an effective therapeutic method for closing chronic plantar ulcers in leprosy, resulting in a decrease in the financial costs employed and in an important improvement in the Quality-of-Life parameters of the individuals undergoing to this procedure. The availability and regular use of shoes and insoles is crucial to prevent recurrence of these injuries.PMID:37952867 | DOI:10.1016/j.actatropica.2023.107019 (Source: Acta Tropica)
Source: Acta Tropica - November 12, 2023 Category: Infectious Diseases Authors: Francisco Mateus Jo ão Silmara Navarro Pennini Lu íza Garnelo Zanair Soares Vasconcelos Sin ésio Talhari Marcello Facundo do Valle Guilherme Miranda Silva de Oliveira Jessica Vanine Ortiz Arin éia Soares da Silva R ômulo Freitas de Morais Maria das G Source Type: research
Distribution of phoretic mites and lice in Pseudolynchia canariensis living on pigeons and the relationship with seasonality, carrier sex, plumage coloration and age of definitive hosts
Acta Trop. 2023 Nov 9:107068. doi: 10.1016/j.actatropica.2023.107068. Online ahead of print.ABSTRACTAmong the parasites, some groups that have a limited capacity for locomotion, such as mites and lice, the transmission is challenging to win. These ectoparasites disperse through direct contact between hosts or, in some cases, through phoresy. However, these processes are not well-documented in detail because they are difficult to observe and quantify. In the present study, the patterns of distribution of skin mites and phoretic lice on hippoboscid louse fly Pseudolynchia canariensis sampled from Columba livia were evaluated...
Source: Acta Tropica - November 11, 2023 Category: Infectious Diseases Authors: Hugo Leonardo da Cunha Amaral Fabiane Borba Bergmann Paulo Roberto Silveira Santos Mariana H ärter Remião Rodrigo Ferreira Kr üger Tony Silveira Source Type: research
Distribution of phoretic mites and lice in Pseudolynchia canariensis living on pigeons and the relationship with seasonality, carrier sex, plumage coloration and age of definitive hosts
Acta Trop. 2023 Nov 9:107068. doi: 10.1016/j.actatropica.2023.107068. Online ahead of print.ABSTRACTAmong the parasites, some groups that have a limited capacity for locomotion, such as mites and lice, the transmission is challenging to win. These ectoparasites disperse through direct contact between hosts or, in some cases, through phoresy. However, these processes are not well-documented in detail because they are difficult to observe and quantify. In the present study, the patterns of distribution of skin mites and phoretic lice on hippoboscid louse fly Pseudolynchia canariensis sampled from Columba livia were evaluated...
Source: Acta Tropica - November 11, 2023 Category: Infectious Diseases Authors: Hugo Leonardo da Cunha Amaral Fabiane Borba Bergmann Paulo Roberto Silveira Santos Mariana H ärter Remião Rodrigo Ferreira Kr üger Tony Silveira Source Type: research
The effect of El Ni ño and La Niña episodes on the existing niche and potential distribution of vector and host species of American Cutaneous Leishmaniasis
Acta Trop. 2023 Nov 8:107060. doi: 10.1016/j.actatropica.2023.107060. Online ahead of print.ABSTRACTLeishmaniasis is a zoonotic disease transmitted to humans by a protozoan parasite through sandfly vectors and multiple vertebrate hosts. The Pan American Health Organization reported a declining trend in cases, with Brazil, Colombia, Peru, Nicaragua, and Bolivia having the most cases in 2020. There are still knowledge gaps in transmission and the parasite-host relationship. Ecological niche modeling has been used to study host-vector relationships, disease dynamics, and the impact of climate change. Understanding these aspec...
Source: Acta Tropica - November 10, 2023 Category: Infectious Diseases Authors: Juli án Ávila-Jiménez Juan David Guti érrez Mariano Altamiranda-Saavedra Source Type: research
Effects of protoscoleces excretory-secretory products of Echinococcus granulosus on hepatocyte growth, function, and glucose metabolism
In this study, we characterized multiple changes in mouse hepatocytes following treatment with excretory-secretory products (ESPs) of Echinococcus granulosus protoscoleces (Eg-PSCs) by a factorial experiment. The cell counting kit-8 assay (CCK-8), the 5-ethynyl-2'-deoxyuridine (EdU) assay, and flow cytometry were used to detect the growth of hepatocytes. Inverted microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to observe the morphology and ultrastructure of hepatocytes. An automatic biochemical analyzer and an ELISA detection kit were used to determine six conventional h...
Source: Acta Tropica - November 9, 2023 Category: Infectious Diseases Authors: Guangyi Luo Haiwen Li Qiong Lu Jiangtao Cao Hailong Lv Yufeng Jiang Source Type: research
Revised New World bioregions and environmental correlates for Chagas diseases vectors (Hemiptera, Triatominae)
This study objectively determined bioregions focused specifically on New World Triatominae, using clustering and ordination analysis We also identified indicator species by bioregion and investigated relationships among bioregions and environmental variables using redundancy analysis and multivariate regression trees. We delineated seven bioregions specific to Triatominae and linked each with indicator species. This result suggests more biogeographical structure exists than was revealed in earlier studies that were more general, subjective, and based on older taxonomic and distributional information. Precipitation, elevati...
Source: Acta Tropica - November 9, 2023 Category: Infectious Diseases Authors: Mireya Gomez Wilfredo A Matamoros Santiago Larre-Campuzano Lili án Yépez-Mulia Antonio de Fuentes Christopher W Hoagstrom Source Type: research
Effects of protoscoleces excretory-secretory products of Echinococcus granulosus on hepatocyte growth, function, and glucose metabolism
In this study, we characterized multiple changes in mouse hepatocytes following treatment with excretory-secretory products (ESPs) of Echinococcus granulosus protoscoleces (Eg-PSCs) by a factorial experiment. The cell counting kit-8 assay (CCK-8), the 5-ethynyl-2'-deoxyuridine (EdU) assay, and flow cytometry were used to detect the growth of hepatocytes. Inverted microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to observe the morphology and ultrastructure of hepatocytes. An automatic biochemical analyzer and an ELISA detection kit were used to determine six conventional h...
Source: Acta Tropica - November 9, 2023 Category: Infectious Diseases Authors: Guangyi Luo Haiwen Li Qiong Lu Jiangtao Cao Hailong Lv Yufeng Jiang Source Type: research
