LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 13

Search options

  1. Article ; Online: DESCRIPTION, BIOLOGY, AND MEDICAL SIGNIFICANCE OF LEISHMANIA (MUNDINIA) CHANCEI N. SP. (KINETOPLASTEA: TRYPANOSOMATIDAE) FROM GHANA AND LEISHMANIA (MUNDINIA) PROCAVIENSIS N. SP. (KINETOPLASTEA: TRYPANOSOMATIDAE) FROM NAMIBIA.

    Kwakye-Nuako, Godwin / Mosore, Mba-Tihssommah / Boakye, Daniel / Bates, Paul A

    The Journal of parasitology

    2023  Volume 109, Issue 1, Page(s) 43–50

    Abstract: Genetic and phylogenetic analysis was performed on 2 isolates of Leishmania using DNA sequence data from the RNA polymerase II large subunit gene and the ribosomal protein L23a intergenic sequence. This showed the isolates to represent 2 new species ... ...

    Abstract Genetic and phylogenetic analysis was performed on 2 isolates of Leishmania using DNA sequence data from the RNA polymerase II large subunit gene and the ribosomal protein L23a intergenic sequence. This showed the isolates to represent 2 new species within the subgenus Leishmania (Mundinia). The addition of Leishmania (Mundinia) chancei and Leishmania (Mundinia) procaviensis creates a total of 6 named species to date within this recently described subgenus of parasitic protozoa, containing both human pathogens and nonpathogens. Their widespread geographical distribution, basal phylogenetic position within the genus Leishmania, and probable non-sand fly vectors make these L. (Mundinia) species of significant medical and biological interest.
    MeSH term(s) Humans ; Leishmania/genetics ; Ghana ; Namibia/epidemiology ; Phylogeny ; Kinetoplastida ; Biology
    Language English
    Publishing date 2023-03-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 300870-8
    ISSN 1937-2345 ; 0022-3395
    ISSN (online) 1937-2345
    ISSN 0022-3395
    DOI 10.1645/22-53
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Culex erraticus (Diptera: Culicidae) utilizes gopher tortoise burrows for overwintering in North Central Florida.

    McNamara, Timothy D / Mosore, Mba-Tihssommah / Urlaub, Alexander / Lashley, Marcus A / Burkett-Cadena, Nathan D / Reeves, Lawrence E / Martin, Estelle M

    Journal of medical entomology

    2024  Volume 61, Issue 2, Page(s) 454–464

    Abstract: Mosquito-borne diseases represent a significant threat to human and animal health in the United States. Several viruses, including West Nile, Saint Louis encephalitis, and Eastern equine encephalitis are endemic. In humans, the disease is typically ... ...

    Abstract Mosquito-borne diseases represent a significant threat to human and animal health in the United States. Several viruses, including West Nile, Saint Louis encephalitis, and Eastern equine encephalitis are endemic. In humans, the disease is typically detected during the summer months, but not during the winter months. The ability of these viruses to reemerge year after year is still not fully understood, but typically involves persistence in a reservoir host or vector during periods of low transmission. Mosquito species are known to overwinter at different life stages (adults, larvae, or eggs) in manufactured or natural sites. Gopher tortoise burrows are known to serve as refuge for many vertebrate and invertebrate species in pine savannas. In this study, we surveyed the interior of gopher tortoise burrows for overwintering mosquitoes. We identified 4 species (Anopheles crucians s.l., Culex erraticus, Mansonia dyari, and Uranotaenia sapphirina). Cx. erraticus was the most abundant, and its presence and abundance increased in winter months, implying that this species utilized gopher tortoise burrows for overwintering. Bloodfed Cx. erraticus and An. crucians s.l. females were detected. While An. crucians s.l. fed exclusively on the white-tailed deer, Cx. erraticus had a more diverse host range but fed primarily on the gopher tortoise. Tortoises and other long-lived reptiles like the American alligator have been shown to sustain high viremia following West Nile virus (WNV) and Eastern equine encephalitis virus (EEEV) infection and therefore could play a role in the maintenance of these viruses. In addition, Cx. erraticus is naturally infected with WNV and is a known bridge vector for EEEV. As such, these overwintering sites may play a role in perpetuating over-winter arboviral activity in Florida.
    MeSH term(s) Female ; Animals ; Humans ; Horses ; Culicidae ; Culex ; Turtles ; Gophers ; Florida ; Mosquito Vectors ; Deer ; Anopheles ; West Nile virus
    Language English
    Publishing date 2024-01-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 410635-0
    ISSN 1938-2928 ; 0022-2585
    ISSN (online) 1938-2928
    ISSN 0022-2585
    DOI 10.1093/jme/tjad174
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: First Molecular Identification of Rickettsia aeschlimannii and Rickettsia africae in Ticks from Ghana.

    Tagoe, Janice A / Addo, Seth O / Mosore, Mba-Tihssommah / Bentil, Ronald E / Agbodzi, Bright / Behene, Eric / Ladzekpo, Danielle / Addae, Charlotte A / Nimo-Painstil, Shirley / Fox, Anne T / Bimi, Langbong / Dafeamekpor, Courage / Richards, Allen L / Letizia, Andrew G / Diclaro, Joseph W / Dadzie, Samuel K

    The American journal of tropical medicine and hygiene

    2024  Volume 110, Issue 3, Page(s) 491–496

    Abstract: The threats from vector-borne pathogens transmitted by ticks place people (including deployed troops) at increased risk for infection, frequently contributing to undifferentiated febrile illness syndromes. Wild and domesticated animals are critical to ... ...

    Abstract The threats from vector-borne pathogens transmitted by ticks place people (including deployed troops) at increased risk for infection, frequently contributing to undifferentiated febrile illness syndromes. Wild and domesticated animals are critical to the transmission cycle of many tick-borne diseases. Livestock can be infected by ticks, and serve as hosts to tick-borne diseases such as rickettsiosis. Thus, it is necessary to identify the tick species and determine their potential to transmit pathogens. A total of 1,493 adult ticks from three genera-Amblyomma, Hyalomma, and Rhipicephalus-were identified using available morphological keys and were pooled (n = 541) by sex and species. Rickettsia species were detected in 308 of 541 (56.9%) pools by genus-specific quantitative polymerase chain reaction assay (Rick17b). Furthermore, sequencing of the outer membrane protein A and B genes (ompA and ompB) of random samples of Rickettsia-positive samples led to the identification of Rickettsia aeschlimannii and Rickettsia africae with most R. africae DNA (80.2%) detected in pools of Amblyomma variegatum. We report the first molecular detection and identification of the rickettsial pathogens R. africae and R. aeschlimannii in ticks from Ghana. Our findings suggest there is a need to use control measures to prevent infections from occurring among human populations in endemic areas in Ghana. This study underscores the importance of determining which vector-borne pathogens are in circulation in Ghana. Further clinical and prevalence studies are needed to understand more comprehensively the clinical impact of these rickettsial pathogens contributing to human disease and morbidity in Ghana.
    MeSH term(s) Animals ; Adult ; Humans ; Ticks/microbiology ; Ghana/epidemiology ; Rickettsia/genetics ; Ixodidae ; Tick-Borne Diseases/microbiology
    Language English
    Publishing date 2024-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2942-7
    ISSN 1476-1645 ; 0002-9637
    ISSN (online) 1476-1645
    ISSN 0002-9637
    DOI 10.4269/ajtmh.22-0753
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Detection of

    Addo, Seth Offei / Amoako, Emmanuel Kwame / Bentil, Ronald Essah / Agbodzi, Bright / Mosore, Mba-Tihssommah / Yeboah, Clara / Attram, Naiki / Larbi, John Asiedu / Kwakye-Nuako, Godwin / de Souza, Dziedzom K / Wilson, Michael David / Boakye, Daniel Adjei

    BioMed research international

    2023  Volume 2023, Page(s) 1963050

    Abstract: ... ...

    Abstract Leishmania
    MeSH term(s) Humans ; United States ; Female ; Male ; Animals ; Psychodidae/genetics ; Ghana ; Phlebotomus/genetics ; DNA ; Leishmania/genetics
    Chemical Substances DNA (9007-49-2)
    Language English
    Publishing date 2023-09-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2698540-8
    ISSN 2314-6141 ; 2314-6133
    ISSN (online) 2314-6141
    ISSN 2314-6133
    DOI 10.1155/2023/1963050
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: In vitro

    Anning, Alberta Serwah / Kwakye-Nuako, Godwin / Ameyaw, Elvis Ofori / Mosore, Mba-Tihssommah / Asare, Kwame Kumi

    Access microbiology

    2019  Volume 1, Issue 7, Page(s) e000050

    Abstract: Background: Cutaneous leishmaniasis causes physical disfigurement and impairment on affected individuals, however, little attention has been paid to it eradication. The situation of this neglected disease is complicated with the expansion of the non- ... ...

    Abstract Background: Cutaneous leishmaniasis causes physical disfigurement and impairment on affected individuals, however, little attention has been paid to it eradication. The situation of this neglected disease is complicated with the expansion of the non-human pathogenic
    Aim: To test for the concentration threshold of
    Method: The ethanolic leaf extract of
    Results: The MIC of
    Conclusion: We show that a MIC of 62.3 μg ml
    Language English
    Publishing date 2019-09-03
    Publishing country England
    Document type Journal Article
    ISSN 2516-8290
    ISSN (online) 2516-8290
    DOI 10.1099/acmi.0.000050
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Risk factors affecting the feeding site predilection of ticks on cattle in Ghana.

    Addo, Seth Offei / Bentil, Ronald Essah / Mosore, Mba-Tihssommah / Behene, Eric / Adinkrah, Julian / Tagoe, Janice / Yeboah, Clara / Baako, Bernice Olivia Ama / Atibila, Dorcas / Kwarteng, Sandra Abankwa / Poku-Asante, Kwaku / Owusu-Darbo, Ellis / Asoala, Victor / Mingle, Daniel Lartei / Nyarko, Edward Owusu / Fox, Anne T / Letizia, Andrew G / William, Joseph Diclaro / Nimo-Paintsil, Shirley /
    Harwood, James F / Dadzie, Samuel Kweku

    Experimental & applied acarology

    2024  Volume 92, Issue 4, Page(s) 835–850

    Abstract: Ticks are important disease vectors affecting animal health and causing substantial economic loss, especially in the tropics and subtropics. To examine the tick burden of cattle and associated risk factors for tick infestation, ticks were collected from ... ...

    Abstract Ticks are important disease vectors affecting animal health and causing substantial economic loss, especially in the tropics and subtropics. To examine the tick burden of cattle and associated risk factors for tick infestation, ticks were collected from 388 cattle within five regions in Ghana. Most of the cattle were males (50.3%) and generally older than 3 years (65%). Of the animals sampled, 2187 ticks were collected with a mean tick burden of 5.6 ticks per cattle, and the average tick burden on the udder/scrotum being significantly higher than in the anal region (Generalized Linear Mix Model [GLMM], p = 0.01197). The tick species identified were predominantly Amblyomma variegatum (42.6%) and Hyalomma rufipes (26.2%). High proportions of cattle examined were found to have A. variegatum infesting the udder/scrotum. Furthermore, H. rufipes infested mostly the anal region compared to other examined body parts (OR 14.8, 95% CI 8.6-25.4, p < 0.001). Using the GLMM, tick abundance was found to be significantly higher in cattle older than 3 years. The tick burden in the udder/scrotum was higher than that from the chest and leg/thigh of the cattle (GLMM, p < 0.05). The tick burden at the anal region was also significantly higher than the leg/thigh and chest. This study indicates that the preferred attachment sites of ticks on cattle are species-dependent and effective treatment with acaricides should take into consideration the udder/scrotum and anal regions as well as prioritizing older cattle.
    MeSH term(s) Animals ; Cattle ; Ghana ; Tick Infestations/veterinary ; Tick Infestations/epidemiology ; Tick Infestations/parasitology ; Cattle Diseases/parasitology ; Cattle Diseases/epidemiology ; Male ; Female ; Ixodidae/physiology ; Ixodidae/growth & development ; Risk Factors ; Feeding Behavior
    Language English
    Publishing date 2024-04-05
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 11320-7
    ISSN 1572-9702 ; 0168-8162
    ISSN (online) 1572-9702
    ISSN 0168-8162
    DOI 10.1007/s10493-024-00906-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: A Preliminary Study to Compare Recombinase Polymerase Amplification-Lateral Flow and Quantitative PCR in the Detection of Cutaneous Leishmania in Communities from the Volta Region of Ghana.

    Yeboah, Clara / Mosore, Mba-Tihssommah / Attram, Naiki / Shelite, Thomas R / Akuffo, Richard A / Addo, Seth O / Behene, Eric / Agbodzi, Bright / Bentil, Ronald E / Fox, Anne T / Wilson, Michael / Boakye, Daniel / Letizia, Andrew G / Melby, Peter C / Travi, Bruno L

    Vector borne and zoonotic diseases (Larchmont, N.Y.)

    2023  Volume 23, Issue 2, Page(s) 75–80

    Abstract: Background: ...

    Abstract Background:
    MeSH term(s) Animals ; Leishmania/genetics ; Recombinases/genetics ; Ghana/epidemiology ; Sensitivity and Specificity ; Polymerase Chain Reaction/methods ; Polymerase Chain Reaction/veterinary ; Nucleic Acid Amplification Techniques/methods ; Nucleic Acid Amplification Techniques/veterinary ; Leishmaniasis, Cutaneous/diagnosis ; Leishmaniasis, Cutaneous/epidemiology ; Leishmaniasis, Cutaneous/parasitology ; Leishmaniasis, Cutaneous/veterinary
    Chemical Substances Recombinases
    Language English
    Publishing date 2023-01-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2047199-3
    ISSN 1557-7759 ; 1530-3667
    ISSN (online) 1557-7759
    ISSN 1530-3667
    DOI 10.1089/vbz.2022.0043
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Whole genome sequencing of outbreak strains from 2017 to 2018 reveals an endemic clade of dengue 1 virus in Cameroon.

    Agbodzi, Bright / Sado Yousseu, Francine Berlange / Nemg Simo, Fredy Brice / Kumordjie, Selassie / Yeboah, Clara / Mosore, Mba-Tihssommah / Bentil, Ronald E / Coatsworth, Heather G / Attram, Naiki / Nimo-Paintsil, Shirley / Fox, Anne T / Bonney, Joseph H K / Ampofo, William / Dinglasan, Rhoel R / Sanders, Terrel / Wiley, Michael R / Demanou, Maurice / Letizia, Andrew G

    Emerging microbes & infections

    2023  Volume 12, Issue 2, Page(s) 2281352

    Abstract: Dengue fever is expanding as a global public health threat including countries within Africa. For the past few decades, Cameroon has experienced sporadic cases of arboviral infections including dengue fever. Here, we conducted genomic analyses to ... ...

    Abstract Dengue fever is expanding as a global public health threat including countries within Africa. For the past few decades, Cameroon has experienced sporadic cases of arboviral infections including dengue fever. Here, we conducted genomic analyses to investigate the origin and phylogenetic profile of Cameroon DENV-1 outbreak strains and predict the impact of emerging therapeutics on these strains. Bayesian and maximum-likelihood phylogenetic inference approaches were employed in virus evolutionary analyses. An in silico analysis was performed to assess the divergence in immunotherapeutic and vaccine targets in the new genomes. Six complete DENV-1 genomes were generated from 50 samples that met a clinical definition for DENV infection. Phylogenetic analyses revealed that the strains from the current study belong to a sub-lineage of DENV-1 genotype V and form a monophyletic taxon with a 2012 strain from Gabon. The most recent common ancestor (TMRCA) of the Cameroon and Gabon strains was estimated to have existed around 2008. Comparing our sequences to the vaccine strains, 19 and 15 amino acid (aa) substitutions were observed in the immuno-protective prM-E protein segments of the Dengvaxia® and TetraVax-DV-TV003 vaccines, respectively. Epitope mapping revealed mismatches in aa residues at positions E155 and E161 located in the epitope of the human anti-DENV-1 monoclonal antibody HMAb 1F4. The new DENV strains constitute a conserved genomic pool of viruses endemic to the Central African region that needs prospective monitoring to track local viral evolution. Further work is needed to ascertain the performance of emerging therapeutics in DENV strains from the African region.
    MeSH term(s) Humans ; Dengue Virus/genetics ; Dengue/epidemiology ; Phylogeny ; Cameroon/epidemiology ; Bayes Theorem ; Prospective Studies ; Whole Genome Sequencing ; Genotype ; Disease Outbreaks ; Vaccines
    Chemical Substances Vaccines
    Language English
    Publishing date 2023-11-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2681359-2
    ISSN 2222-1751 ; 2222-1751
    ISSN (online) 2222-1751
    ISSN 2222-1751
    DOI 10.1080/22221751.2023.2281352
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Prevalence of Leishmania infection in three communities of Oti Region, Ghana.

    Akuffo, Richard / Wilson, Michael / Sarfo, Bismark / Attram, Naiki / Mosore, Mba-Tihssommah / Yeboah, Clara / Cruz, Israel / Ruiz-Postigo, Jose-Antonio / Boakye, Daniel / Moreno, Javier / Anto, Francis

    PLoS neglected tropical diseases

    2021  Volume 15, Issue 5, Page(s) e0009413

    Abstract: Background: Leishmaniasis is a neglected tropical disease caused by parasites of the genus Leishmania and is transmitted by various species of female phlebotomine sand flies. The first report of cutaneous leishmaniasis (CL) in Ghana refer to a cluster ... ...

    Abstract Background: Leishmaniasis is a neglected tropical disease caused by parasites of the genus Leishmania and is transmitted by various species of female phlebotomine sand flies. The first report of cutaneous leishmaniasis (CL) in Ghana refer to a cluster of cases in 1999-2003 in the Ho municipality of the Volta Region. We conducted an epidemiological assessment in the Oti Region, encouraged by recent reports of potential cases of CL.
    Methodology/principal findings: Using a cross-sectional study design, the exposure to Leishmania was investigated in three communities of the Oti Region based on the leishmanin skin test (LST). LST results for 3,071 participants comprising 1091, 848, and 1132 persons from the communities of Ashiabre, Keri, and Sibi Hilltop, indicated an overall prevalence of exposure to Leishmania infection of 41.8% and individual community prevalence of 39.4%, 55.1%, and 34.2% respectively. Being male [AOR = 1.27; CI: 1.09, 1.49], and living in Keri [AOR = 1.83; CI: 1.43, 2.34] were associated with an increase in the odds of exposure to Leishmania. Being 5-10 years old [AOR = 1.48; CI: 1.06, 2.05], 11-17 years old [AOR = 2.03; CI: 1.45, 2.85], 18-40 years old [AORR = 2.83; CI: 1.81, 4.43] and 41-65 years old [AOR = 5.08; CI: 2.98, 8.68] were also significantly associated with increased odds of being exposed to Leishmania.
    Conclusions/significance: This study demonstrated exposure to Leishmania in the study communities and also identified associated factors. Future efforts aimed at reducing exposure to Leishmania infection in the study area should take the associated factors into consideration.
    MeSH term(s) Adolescent ; Adult ; Child ; Child, Preschool ; Cross-Sectional Studies ; Female ; Ghana/epidemiology ; Humans ; Leishmania/immunology ; Leishmaniasis, Cutaneous/epidemiology ; Leishmaniasis, Cutaneous/immunology ; Male ; Middle Aged ; Prevalence ; Risk Factors ; Skin Tests
    Language English
    Publishing date 2021-05-27
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2429704-5
    ISSN 1935-2735 ; 1935-2727
    ISSN (online) 1935-2735
    ISSN 1935-2727
    DOI 10.1371/journal.pntd.0009413
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Detection of cutaneous leishmaniasis in three communities of Oti Region, Ghana.

    Akuffo, Richard / Sanchez, Carmen / Chicharro, Carmen / Carrillo, Eugenia / Attram, Naiki / Mosore, Mba-Tihssommah / Yeboah, Clara / Kotey, Nana Konama / Boakye, Daniel / Ruiz-Postigo, Jose-Antonio / Moreno, Javier / Wilson, Michael / Sarfo, Bismark / Anto, Francis

    PLoS neglected tropical diseases

    2021  Volume 15, Issue 5, Page(s) e0009416

    Abstract: Background: Cutaneous leishmaniasis (CL) is the most common type of leishmaniasis, a neglected tropical disease caused by parasites of the genus Leishmania. In Ghana, some studies in the Volta region have detected Leishmania parasites among persons with ...

    Abstract Background: Cutaneous leishmaniasis (CL) is the most common type of leishmaniasis, a neglected tropical disease caused by parasites of the genus Leishmania. In Ghana, some studies in the Volta region have detected Leishmania parasites among persons with skin ulcers.
    Methodology/principal findings: Using a cross-sectional study design, the prevalence of CL in three communities of the Oti Region of Ghana was investigated. Demographic and epidemiological data were obtained by a structured interviewer administered questionnaire. A total of 426 (12.4%) out of 3,440 participants screened had at least one skin ulcer. Of 595 skin ulcers sampled and tested by PCR for Leishmania infection, 150 (25.2%) ulcers from 136 individuals tested positive, accounting for an overall CL prevalence of 31.9% among persons with skin ulcers. Individual community CL prevalence of 23.2%, 29.8%, and 36.8% was observed in Ashiabre, Keri, and Sibi Hilltop respectively among persons with skin ulcers.
    Conclusions/significance: Confirmation of CL in the study area suggests an active cycle of transmission of Leishmania infection. The observation of skin ulcers which tested negative to Leishmania infection suggests a need to test for additional causes of skin ulcers such as Treponema pallidum pertenue and Mycobacterium ulcerans in the study area.
    MeSH term(s) Adolescent ; Adult ; Child ; Child, Preschool ; Cross-Sectional Studies ; Female ; Ghana/epidemiology ; Humans ; Leishmania/genetics ; Leishmania/isolation & purification ; Leishmaniasis, Cutaneous/epidemiology ; Male ; Middle Aged ; Polymerase Chain Reaction ; Prevalence ; Skin Ulcer/epidemiology ; Skin Ulcer/parasitology ; Surveys and Questionnaires
    Language English
    Publishing date 2021-05-24
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2429704-5
    ISSN 1935-2735 ; 1935-2727
    ISSN (online) 1935-2735
    ISSN 1935-2727
    DOI 10.1371/journal.pntd.0009416
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top