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Kwenti TE. Malaria and HIV coinfection in sub-Saharan Africa: prevalence, impact, and treatment strategies. Res Rep Trop Med 2018; 9:123-136. [PMID: 30100779 PMCID: PMC6067790 DOI: 10.2147/rrtm.s154501] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Malaria and HIV, two of the world's most deadly diseases, are widespread, but their distribution overlaps greatly in sub-Saharan Africa. Consequently, malaria and HIV coinfection (MHC) is common in the region. In this paper, pertinent publications on the prevalence, impact, and treatment strategies of MHC obtained by searching major electronic databases (PubMed, PubMed Central, Google Scholar, ScienceDirect, and Scopus) were reviewed, and it was found that the prevalence of MHC in SSA was 0.7%-47.5% overall. Prevalence was 0.7%-47.5% in nonpregnant adults, 1.2%-27.8% in children, and 0.94%-37% in pregnant women. MHC was associated with an increased frequency of clinical parasitemia and severe malaria, increased parasite and viral load, and impaired immunity to malaria in nonpregnant adults, children, and pregnant women, increased in placental malaria and related outcomes in pregnant women, and impaired antimalarial drug efficacy in nonpregnant adults and pregnant women. Although a few cases of adverse events have been reported in coinfected patients receiving antimalarial and antiretroviral drugs concurrently, available data are very limited and have not prompted major revision in treatment guidelines for both diseases. Artemisinin-based combination therapy and cotrimoxazole are currently the recommended drugs for treatment and prevention of malaria in HIV-infected children and adults. However, concurrent administration of cotrimoxazole and sulfadoxine-pyrimethamine in HIV-infected pregnant women is not recommended, because of high risk of sulfonamide toxicity. Further research is needed to enhance our understanding of the impact of malaria on HIV, drug-drug interactions in patients receiving antimalarials and antiretroviral drugs concomitantly, and the development of newer, safer, and more cost-effective drugs and vaccines to prevent malaria in HIV-infected pregnant women.
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Affiliation(s)
- Tebit E Kwenti
- Department of Medical Laboratory Sciences, Faculty of Health Sciences, University of Buea,
- Regional Hospital Buea, Buea, Cameroon,
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Zanotti P, Chirico C, Gulletta M, Ardighieri L, Casari S, Roldan EQ, Izzo I, Pinsi G, Lorenzin G, Facchetti F, Castelli F, Focà E. Disseminated Histoplasmosis as AIDS-presentation. Case Report and Comprehensive Review of Current Literature. Mediterr J Hematol Infect Dis 2018; 10:e2018040. [PMID: 30002796 PMCID: PMC6039081 DOI: 10.4084/mjhid.2018.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 05/14/2018] [Indexed: 12/21/2022] Open
Abstract
Progressive disseminated histoplasmosis (PDH) is an AIDS-defining illness with a high lethality rate if not promptly treated. The wide range of its possible clinical manifestations represents the main barrier to diagnosis in non-endemic countries. Here we present a case of PDH with haemophagocytic syndrome in a newly diagnosed HIV patient and a comprehensive review of disseminated histoplasmosis focused on epidemiology, clinical features, diagnostic tools and treatment options in HIV-infected patients.
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Affiliation(s)
- Paola Zanotti
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Claudia Chirico
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Maurizio Gulletta
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Laura Ardighieri
- Pathology Unit, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | | | - Eugenia Quiros Roldan
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Ilaria Izzo
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Gabriele Pinsi
- Microbiology and Virology Unit, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Giovanni Lorenzin
- Microbiology and Virology Unit, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
- Institute of Microbiology and Virology, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy
| | - Fabio Facchetti
- Pathology Unit, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Francesco Castelli
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
| | - Emanuele Focà
- Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili General Hospital, Brescia, Italy
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Alemayehu G, Melaku Z, Abreha T, Alemayehu B, Girma S, Tadesse Y, Gadisa T, Lulseged S, Balcha TT, Hoos D, Teka H, Reithinger R. Burden of malaria among adult patients attending general medical outpatient department and HIV care and treatment clinics in Oromia, Ethiopia: a comparative cross-sectional study. Malar J 2015; 14:501. [PMID: 26671012 PMCID: PMC4681039 DOI: 10.1186/s12936-015-1029-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 12/02/2015] [Indexed: 11/18/2022] Open
Abstract
Background Malaria and HIV/AIDS constitute major public health problems in Ethiopia, but the burden associated with malaria-HIV co-infection has not been well documented. In this study, the burden of malaria among HIV positive and HIV negative adult outpatients attending health facilities in Oromia National Regional State, Ethiopia was investigated. Methods A comparative cross-sectional study among HIV-positive patients having routine follow-up visits at HIV care and treatment clinics and HIV-seronegative patients attending the general medical outpatient departments in 12 health facilities during the peak malaria transmission season was conducted from September to November, 2011. A total of 3638 patients (1819 from each group) were enrolled in the study. Provider initiated testing and counseling of HIV was performed for 1831 medical outpatients out of whom 1819 were negative and enrolled into the study. Malaria blood microscopy and hemoglobin testing were performed for all 3638 patients. Data was analyzed using descriptive statistics, Chi square test and multivariate logistic regression. Results Of the 3638 patients enrolled in the study, malaria parasitaemia was detected in 156 (4.3 %); malaria parasitaemia prevalence was 0.7 % (13/1819) among HIV-seropositive patients and 7.9 % (143/1819) among HIV-seronegative patients. Among HIV-seropositive individuals 65.4 % slept under a mosquito bed net the night before data collection, compared to 59.4 % of HIV-seronegative individuals. A significantly higher proportion of HIV-seropositive malaria-negative patients were on co-trimoxazole (CTX) prophylaxis as compared to HIV-malaria co-infected patients: 82 % (1481/1806) versus 46 % (6/13) (P = 0.001). HIV and malaria co-infected patients were less likely to have the classical symptoms of malaria (fever, chills and headache) compared to the HIV-seronegative and malaria positive counterparts. Multivariate logistic regression showed that HIV-seropositive patients who come for routine follow up were less likely to be infected by malaria (OR = 0.23, 95 % CI = 0.09–0.74). Conclusion The study documented lower malaria prevalence among the HIV-seropositive attendants who come for routine follow up. Clinical symptoms of malaria were more pronounced among HIV-seronegative than HIV-seropositive patients. This study also re-affirmed the importance of co-trimoxazole in preventing malaria symptoms and parasitaemia among HIV- positive patients.
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Affiliation(s)
- Guda Alemayehu
- U.S. Agency for International Development (USAID), Addis Ababa, Ethiopia.
| | | | | | | | - Samuel Girma
- Columbia University ICAP, Addis Ababa, Ethiopia.
| | | | | | | | - Taye Tolera Balcha
- Oromia Regional Health Bureau and Federal Ministry of Health Addis Ababa, Addis Ababa, Ethiopia.
| | - David Hoos
- Columbia University ICAP, New York, USA.
| | - Hiwot Teka
- U.S. Agency for International Development (USAID), Addis Ababa, Ethiopia.
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Mohanty P, Gupta A, Bhatnagar S. Modeling of Plasmodium falciparum Telomerase Reverse Transcriptase Ternary Complex: Repurposing of Nucleoside Analog Inhibitors. Assay Drug Dev Technol 2015; 13:628-37. [PMID: 26690766 DOI: 10.1089/adt.2015.29013.pmodrrr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The Plasmodium falciparum telomerase reverse transcriptase (PfTERT) is a ribonucleoprotein that assists the maintenance of the telomeric ends of chromosomes by reverse transcription of its own RNA subunit. It represents an attractive therapeutic target for eradication of the plasmodial parasite at the asexual liver stage. Automated modeling using MUSTER and knowledge-based techniques were used to obtain a three-dimensional model of the active site of reverse transcriptase domain of PfTERT, which is responsible for catalyzing the addition of incoming dNTPs to the growing DNA strand in presence of divalent magnesium ions. Further, the ternary complex of the active site of PfTERT bound to a DNA-RNA duplex was also modeled using Haddock server and represents the functional form of the enzyme. Initially, established nucleoside analog inhibitors of PfTERT, AZTTP, and ddGTP were docked in the modeled binding site of the PfTERT ternary complex using AutoDock v4.2. Subsequently, docking studies were carried out with 14 approved nucleoside analog inhibitors. Docking studies predicted that floxuridine, gemcitabine, stavudine, and vidarabine have high affinity for the PfTERT ternary complex. Further analysis on the basis of known side effects led us to propose repositioning of vidarabine as a suitable drug candidate for inhibition of PfTERT.
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Affiliation(s)
- Pallavi Mohanty
- Computational and Structural Biology Laboratory, Division of Biotechnology, Netaji Subhas Institute of Technology , Dwarka, New Delhi, India
| | - Akanksha Gupta
- Computational and Structural Biology Laboratory, Division of Biotechnology, Netaji Subhas Institute of Technology , Dwarka, New Delhi, India
| | - Sonika Bhatnagar
- Computational and Structural Biology Laboratory, Division of Biotechnology, Netaji Subhas Institute of Technology , Dwarka, New Delhi, India
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Lüthi B, Schlagenhauf P. Risk factors associated with malaria deaths in travellers: A literature review. Travel Med Infect Dis 2015; 13:48-60. [DOI: 10.1016/j.tmaid.2014.04.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/17/2014] [Accepted: 04/23/2014] [Indexed: 11/30/2022]
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Aung AK, Trubiano JA, Spelman DW. Travel risk assessment, advice and vaccinations in immunocompromised travellers (HIV, solid organ transplant and haematopoeitic stem cell transplant recipients): A review. Travel Med Infect Dis 2014; 13:31-47. [PMID: 25593039 DOI: 10.1016/j.tmaid.2014.12.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 12/19/2022]
Abstract
International travellers with immunocompromising conditions such as human immunodeficiency virus (HIV) infection, solid organ transplantation (SOT) and haematopoietic stem cell transplantation (HSCT) are at a significant risk of travel-related illnesses from both communicable and non-communicable diseases, depending on the intensity of underlying immune dysfunction, travel destinations and activities. In addition, the choice of travel vaccinations, timing and protective antibody responses are also highly dependent on the underlying conditions and thus pose significant challenges to the health-care providers who are involved in pre-travel risk assessment. This review article provides a framework of understanding and approach to aforementioned groups of immunocompromised travellers regarding pre-travel risk assessment and management; in particular travel vaccinations, infectious and non-infectious disease risks and provision of condition-specific advice; to reduce travel-related mortality and morbidity.
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Affiliation(s)
- A K Aung
- Department of General Medicine, The Alfred Hospital, Melbourne, Victoria, Australia; Department of Infectious Diseases, The Alfred Hospital, Melbourne, Victoria, Australia.
| | - J A Trubiano
- Department of Infectious Diseases, The Alfred Hospital, Melbourne, Victoria, Australia; Department of Microbiology, The Alfred Hospital, Melbourne, Victoria, Australia
| | - D W Spelman
- Department of Infectious Diseases, The Alfred Hospital, Melbourne, Victoria, Australia; Department of Microbiology, The Alfred Hospital, Melbourne, Victoria, Australia; Monash University, Melbourne, Victoria, Australia
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Ohene SA, Addo NA, Zigah F, Newman M, Lartey M, Romero MA, Ofori S, Sheriff T, Ndanu T. Evaluation of antiretroviral therapy (ART) provision in an early cohort of patients initiating ART in Ghana. Pan Afr Med J 2013; 16:117. [PMID: 24778754 PMCID: PMC3998899 DOI: 10.11604/pamj.2013.16.117.3136] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 11/10/2013] [Indexed: 11/11/2022] Open
Abstract
Introduction Against the background of Ghana's ART program which scaled up rapidly since inception in 2003, the study assessed outcomes of an early cohort of patients initiating ART. Methods The study utilized the following methods: a cross-sectional study involving patient interviews using a structured questionnaire, a review of records and a retrospective cohort analysis of adults initiating ART between 2003 and 2008 from four selected clinics. Results The 683 study participants consisted of 464 females (67.9%) and the mean age was 41 years. Mean duration of treatment was 25 months (SD =13). More than 95% were on a regimen as per national guidelines. Ninety-five (14.1%) of the respondents had one or two drugs substituted. Seventy-three% of the substitutions were due to adverse drug reactions. On at least one occasion, over half (350) had defaulted on a clinic appointment. In the 3 months preceding the survey, 21.4% (146) had missed treatment doses. About 49% (334) had challenges meeting financial obligations related to care. The median weight increased by 5.9kg and 8.0kg at 6 and 12 months after initiating ART respectively over the median baseline weight of 54kg, (p-value = 0.001). The median CD4 count increased by 128, 170 and 256 cells/µl respectively at 6, 12 and 24 months from the median baseline of 125 cell/µl, (p-value = 0.035). Conclusion This study of Ghanaian PLHIV on ART from four facilities showed encouraging immunological and clinical outcomes. There were however issues of appointment default, sub-optimum adherence to treatment and cost of care barriers needing attention.
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Affiliation(s)
- Sally-Ann Ohene
- World Health Organization Ghana Country Office, Accra, Ghana
| | - Nii Akwei Addo
- National AIDS/STI Control Programme, Ghana Health Service, Accra, Ghana
| | | | - Morkor Newman
- World Health Organization Inter-country Support Team, Harare, Zimbabwe
| | - Margaret Lartey
- Department of Medicine, University of Ghana Medical School, Accra, Ghana
| | | | | | | | - Tom Ndanu
- University of Ghana Dental School, Accra, Ghana
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