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Kumar P, Kumar P, Singh N, Khajuria S, Patel R, Rajana VK, Mandal D, Velayutham R. Limitations of current chemotherapy and future of nanoformulation-based AmB delivery for visceral leishmaniasis-An updated review. Front Bioeng Biotechnol 2022; 10:1016925. [PMID: 36588956 PMCID: PMC9794769 DOI: 10.3389/fbioe.2022.1016925] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/31/2022] [Indexed: 12/15/2022] Open
Abstract
Visceral leishmaniasis (VL) is the most lethal of all leishmaniasis diseasesand the second most common parasiticdisease after malaria and,still, categorized as a neglected tropical disease (NTD). According to the latest WHO study, >20 Leishmania species spread 0.7-1.0 million new cases of leishmaniasis each year. VL is caused by the genus, Leishmania donovani (LD), which affects between 50,000 and 90,000 people worldwide each year. Lack of new drug development, increasing drug resistance, toxicity and high cost even with the first line of treatmentof Amphotericin B (AmB), demands new formulation for treatment of VLFurther the lack of a vaccine, allowedthe researchers to develop nanofomulation-based AmB for improved delivery. The limitation of AmB is its kidney and liver toxicity which forced the development of costly liposomal AmB (AmBisome) nanoformulation. Success of AmBisome have inspired and attracted a wide range of AmB nanoformulations ranging from polymeric, solid lipid, liposomal/micellar, metallic, macrophage receptor-targetednanoparticles (NP) and even with sophisticated carbon/quantum dot-based AmBnano delivery systems. Notably, NP-based AmB delivery has shown increased efficacy due to increased uptake, on-target delivery and synergistic impact of NP and AmB. In this review, we have discussed the different forms of leishmaniasis disease and their current treatment options with limitations. The discovery, mechanism of action of AmB, clinical status of AmB and improvement with AmBisome over fungizone (AmB-deoxycholate)for VL treatment was further discussed. At last, the development of various AmB nanoformulation was discussed along with its adavantages over traditional chemotherapy-based delivery.
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Affiliation(s)
- Prakash Kumar
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Pawan Kumar
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Nidhi Singh
- National Institute of Pharmaceutical Education and Research, Ahmedabad, India
| | - Salil Khajuria
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Rahul Patel
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Vinod Kumar Rajana
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India
| | - Debabrata Mandal
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India,*Correspondence: Ravichandiran Velayutham, ; Debabrata Mandal,
| | - Ravichandiran Velayutham
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, India,National Institute of Pharmaceutical Education and Research, Kolkata, India,*Correspondence: Ravichandiran Velayutham, ; Debabrata Mandal,
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Whole Blood Stimulation Assay as a Treatment Outcome Monitoring Tool for VL Patients in Ethiopia: A Pilot Evaluation. J Immunol Res 2020; 2020:8385672. [PMID: 32377538 PMCID: PMC7193677 DOI: 10.1155/2020/8385672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 12/04/2019] [Indexed: 11/20/2022] Open
Abstract
Visceral leishmaniasis (VL) is a lethal disease if left untreated. Current treatments produce variable rates of treatment failure and toxicity without sterile cure, rendering treatment efficacy monitoring essential. To avoid repeated invasive tissue aspirates as well as empirical treatment, there is a need for new tools that allow a less-invasive and early assessment of treatment efficacy in the field. Cross-sectional studies have suggested levels of cytokines/chemokines after whole blood stimulation as good markers of cure, but longitudinal studies are lacking. In this study, we followed 13 active VL cases in an endemic area in Ethiopia by measuring the production of IFN-γ, TNF-α, IP-10, IL-2, IL-10, MCP-1, and MIG before, during, and at the end of treatment. After 24 hours of stimulation of whole blood with soluble Leishmania antigen, we observed an early, robust, and incremental increase of IFN-γ, TNF-α, and IP-10 levels in all patients during treatment. Moreover, based on the IFN-γ levels that showed an average 13-fold increase from the time of diagnosis until the end of treatment, we could almost perfectly discriminate active from cured status. Similar concentrations and patterns were found in stimulation assays with the two main Leishmania species. The levels of IFN-γ, IP-10, or TNF-α also seemed to be inversely associated with the parasite load at baseline. Despite a 1/10 drop in concentrations, similar patterns were observed in IFN-γ and IP-10 levels when dried plasma spots were stored at 4°C for an average of 225 days. All the above evidence suggests a detectable restoration of cell-mediated immunity in VL and its association with parasite clearance. With a potential application in rural settings by means of dried plasma spots, we recommend to further explore the early diagnostic value of such assays for treatment efficacy monitoring in large cohort studies including treatment failure cases.
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André S, Rodrigues V, Pemberton S, Laforge M, Fortier Y, Cordeiro-da-Silva A, MacDougall J, Estaquier J. Antileishmanial Drugs Modulate IL-12 Expression and Inflammasome Activation in Primary Human Cells. THE JOURNAL OF IMMUNOLOGY 2020; 204:1869-1880. [PMID: 32132181 DOI: 10.4049/jimmunol.1900590] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 02/02/2020] [Indexed: 01/10/2023]
Abstract
Leishmaniases are neglected tropical diseases. The treatment of leishmaniasis relies exclusively on chemotherapy including amphotericin B (AmB), miltefosine (hexadecylphosphocholine), and pentamidine. Besides the fact that these molecules are harmful for patients, little is known about the impact of such antileishmanial drugs on primary human cells in relation to immune function. The present study demonstrates that all antileishmanial drugs inhibit CD4 and CD8 T cell proliferation at the doses that are not related to increased cell death. Our results highlight that antileishmanial drugs have an impact on monocytes by altering the expression of IL-12 induced by LPS, whereas only AmB induced IL-10 secretion; both cytokines are essential in regulating Th1 cell-mediated immunity. Interestingly, IL-12 and anti-IL-10 Abs improved T cell proliferation inhibited by AmB. Furthermore, our results show that in contrast to hexadecylphosphocholine and pentamidine, AmB induced gene expression of the inflammasome pathway. Thus, AmB induced IL-1β and IL-18 secretions, which are reduced by specific inhibitors of caspase activation (Q-VD) and NLRP3 activation (MCC950). Our results reveal previously underestimated effects of antileishmanial drugs on primary human cells.
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Affiliation(s)
- Sonia André
- INSERM-U1124, Paris University, 75006 Paris, France
| | | | - Sarah Pemberton
- INSERM-U1124, Paris University, 75006 Paris, France.,Photeomix, 93160 Noisy Le Grand, France
| | | | | | - Anabela Cordeiro-da-Silva
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal.,Instituto de Biologia Molecular e Celular da Universidade do Porto, 450-313 Porto, Portugal.,Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, 450-313 Porto, Portugal; and
| | | | - Jérôme Estaquier
- INSERM-U1124, Paris University, 75006 Paris, France; .,Centre de Recherche du Centre Hospitalier Universitaire de Québec, Université Laval, Quebec City, Quebec G1V 4G2, Canada
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Diro E, Ritmeijer K, Boelaert M, Alves F, Mohammed R, Abongomera C, Ravinetto R, De Crop M, Fikre H, Adera C, van Loen H, Tsoumanis A, Adriaensen W, Hailu A, Griensven JV. Long-term Clinical Outcomes in Visceral Leishmaniasis/Human Immunodeficiency Virus-Coinfected Patients During and After Pentamidine Secondary Prophylaxis in Ethiopia: A Single-Arm Clinical Trial. Clin Infect Dis 2019; 66:444-451. [PMID: 29020217 PMCID: PMC5848371 DOI: 10.1093/cid/cix807] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/12/2017] [Indexed: 12/12/2022] Open
Abstract
Background We have conducted a single-arm trial evaluating monthly pentamidine secondary prophylaxis (PSP) to prevent visceral leishmaniasis (VL) relapse in Ethiopian human immunodeficiency virus–infected patients. Outcomes at 12 months of PSP have been previously reported, supporting PSP effectiveness and safety. However, remaining relapse-free after PSP discontinuation is vital. We now report outcomes and associated factors for a period of up to 2.5 years after initiating PSP, including 1-year follow-up after PSP discontinuation. Methods The trial had 3 phases: (1) 12 months of PSP; (2) a 6-month PSP extension period if CD4 count was ≤200 cells/μL at month 12; and (3) 12-month follow-up after stopping PSP. The probability of relapse and risk factors were calculated using Kaplan-Meier methods and Cox regression analysis. Results For the 74 patients included, final study outcomes were as follows: 39 (53%) relapse-free, 20 (27%) relapsed, 5 (7%) deaths, 10 (14%) lost to follow-up. The 2-year risk of relapse was 36.9% (95% confidence interval, 23.4%–55.0%) and was highest for those with a history of VL relapse and low baseline CD4 count. Forty-five patients were relapse-free and in follow-up at month 12 of PSP. This included 28 patients with month 12 CD4 counts >200 cells/µL, remaining relapse-free after PSP discontinuation. Among the 17 with month 12 CD4 count <200 cells/µL, 1 relapsed and 3 were lost during the PSP extension period. During 1-year post-PSP follow-up, 2 patients relapsed and 1 was lost to follow-up. No PSP-related serious adverse events were reported during the PSP-extension/post-PSP follow-up period. Conclusions It seems safe to discontinue PSP at month 12 CD4 counts of >200 cells/µL. The management of those failing to reach this level remains to be defined. Clinical Trials Registration NCT01360762.
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Affiliation(s)
- Ermias Diro
- University of Gondar, Ethiopia.,Institute of Tropical Medicine, Antwerp, Belgium
| | | | | | - Fabiana Alves
- Drugs for Neglected Diseases Initiative, Geneva, Switzerland
| | | | | | | | | | | | | | | | | | | | - Asrat Hailu
- School of Medicine, Addis Ababa University, Ethiopia
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Diro E, Edwards T, Ritmeijer K, Fikre H, Abongomera C, Kibret A, Bardonneau C, Soipei P, Mutinda B, Omollo R, van Griensven J, Zijlstra EE, Wasunna M, Alves F, Alvar J, Hailu A, Alexander N, Blesson S. Long term outcomes and prognostics of visceral leishmaniasis in HIV infected patients with use of pentamidine as secondary prophylaxis based on CD4 level: a prospective cohort study in Ethiopia. PLoS Negl Trop Dis 2019; 13:e0007132. [PMID: 30789910 PMCID: PMC6400407 DOI: 10.1371/journal.pntd.0007132] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 03/05/2019] [Accepted: 01/06/2019] [Indexed: 12/03/2022] Open
Abstract
Background The long-term treatment outcome of visceral leishmaniasis (VL) patients with HIV co-infection is complicated by a high rate of relapse, especially when the CD4 count is low. Although use of secondary prophylaxis is recommended, it is not routinely practiced and data on its effectiveness and safety are limited. Methods A prospective cohort study was conducted in Northwest Ethiopia from August 2014 to August 2017 (NCT02011958). HIV-VL patients were followed for up to 12 months. Patients with CD4 cell counts below 200/μL at the end of VL treatment received pentamidine prophylaxis starting one month after parasitological cure, while those with CD4 count ≥200 cells/μL were followed without secondary prophylaxis. Compliance, safety and relapse-free survival, using Kaplan-Meier analysis methods to account for variable time at risk, were summarised. Risk factors for relapse or death were analysed. Results Fifty-four HIV patients were followed. The probability of relapse-free survival at one year was 50% (95% confidence interval [CI]: 35–63%): 53% (30–71%) in 22 patients with CD4 ≥200 cells/μL without pentamidine prophylaxis and 46% (26–63%) in 29 with CD4 <200 cells/μL who started pentamidine. Three patients with CD4 <200 cells/μL did not start pentamidine. Amongst those with CD4 ≥200 cells/μL, VL relapse was an independent risk factor for subsequent relapse or death (adjusted rate ratio: 5.42, 95% CI: 1.1–25.8). Except for one case of renal failure which was considered possibly related to pentamidine, there were no drug-related safety concerns. Conclusion The relapse-free survival rate for VL patients with HIV was low. Relapse-free survival of patients with CD4 count <200cells/μL given pentamidine secondary prophylaxis appeared to be comparable to patients with a CD4 count ≥200 cells/μL not given prophylaxis. Patients with relapsed VL are at higher risk for subsequent relapse and should be considered a priority for secondary prophylaxis, irrespective of their CD4 count. Achieving parasitological cure at the end of visceral leishmaniasis (VL) treatment in HIV co-infected patients does not assure definitive cure, as the disease will recur within a year in many patients. In this cohort study, the probability of relapse-free survival at one-year was 50% in all patients. The use of monthly pentamidine infusion for those with lower CD4 counts (<200 cells/μL) at the time of VL cure appeared to result in a comparable relapse-free survival rate to those patients with higher CD4 count (≥200 cells/μL) who did not receive secondary prophylaxis. On the other hand, patients with a history of previous VL treatment (VL relapse) remained at high risk of relapse despite achieving CD4 count ≥200 cells/μL at the end of the VL treatment. While all VL patients with HIV co-infection may benefit from secondary prophylaxis, those with CD4 <200 cells/μL and previous history of treatment should be prioritized for secondary prophylaxis. New modalities for prevention of VL relapse in HIV patients should also be explored.
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Affiliation(s)
- Ermias Diro
- Leishmaniasis Research and Treatment Centre, University of Gondar, Gondar, Ethiopia
- * E-mail:
| | - Tansy Edwards
- MRC Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Helina Fikre
- Leishmaniasis Research and Treatment Centre, University of Gondar, Gondar, Ethiopia
| | | | | | - Clélia Bardonneau
- Research & Development Department, Drugs for Neglected Diseases initiative, Geneva, Switzerland
| | | | - Brian Mutinda
- Drugs for Neglected Diseases initiative, Nairobi, Kenya
| | | | | | - Eduard E. Zijlstra
- Research & Development Department, Drugs for Neglected Diseases initiative, Geneva, Switzerland
| | | | - Fabiana Alves
- Research & Development Department, Drugs for Neglected Diseases initiative, Geneva, Switzerland
| | - Jorge Alvar
- Research & Development Department, Drugs for Neglected Diseases initiative, Geneva, Switzerland
| | - Asrat Hailu
- Department of Microbiology, Immunology, and Parasitology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Neal Alexander
- MRC Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Séverine Blesson
- Research & Development Department, Drugs for Neglected Diseases initiative, Geneva, Switzerland
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Ansari MY, Ahsan MJ, Yasmin S, Sahoo GC, Saini V, Das P. In silico identification of novel antagonists and binding insights by structural and functional analyses of guanylate kinase of Leishmania donovani and interaction with inhibitors. GENE REPORTS 2017. [DOI: 10.1016/j.genrep.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fox-Lewis A, Lockwood DNJ. Visceral leishmaniasis complicating idiopathic CD4+ T-cell lymphocytopenia: 2 case reports. PLoS Negl Trop Dis 2017; 11:e0005412. [PMID: 28493863 PMCID: PMC5426586 DOI: 10.1371/journal.pntd.0005412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Andrew Fox-Lewis
- Hospital for Tropical Diseases, University College London Hospitals National Health Service (NHS) Foundation Trust, London, United Kingdom
- * E-mail:
| | - Diana N. J. Lockwood
- Hospital for Tropical Diseases, University College London Hospitals National Health Service (NHS) Foundation Trust, London, United Kingdom
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom
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Aronson N, Herwaldt BL, Libman M, Pearson R, Lopez-Velez R, Weina P, Carvalho EM, Ephros M, Jeronimo S, Magill A. Diagnosis and Treatment of Leishmaniasis: Clinical Practice Guidelines by the Infectious Diseases Society of America (IDSA) and the American Society of Tropical Medicine and Hygiene (ASTMH). Clin Infect Dis 2016; 63:e202-e264. [PMID: 27941151 DOI: 10.1093/cid/ciw670] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 09/22/2016] [Indexed: 12/25/2022] Open
Abstract
It is important to realize that leishmaniasis guidelines cannot always account for individual variation among patients. They are not intended to supplant physician judgment with respect to particular patients or special clinical situations. The IDSA and ASTMH consider adherence to these guidelines to be voluntary, with the ultimate determinations regarding their application to be made by the physician in the light of each patient's individual circumstances.
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Affiliation(s)
- Naomi Aronson
- Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | | | - Michael Libman
- McGill University Health Centre, Montreal, Quebec, Canada
| | | | | | - Peter Weina
- Walter Reed National Military Medical Center, Bethesda, Maryland
| | | | | | - Selma Jeronimo
- Federal University of Rio Grande do Norte, Natal, Brazil
| | - Alan Magill
- Bill and Melinda Gates Foundation, Seattle, Washington
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Simple and efficient synthesis of $$5'$$ 5 ′ -aryl- $$5'$$ 5 ′ -deoxyguanosine analogs by azide-alkyne click reaction and their antileishmanial activities. Mol Divers 2016; 20:507-19. [DOI: 10.1007/s11030-015-9652-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 12/28/2015] [Indexed: 01/06/2023]
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Freitas EO, Nico D, Alves-Silva MV, Morrot A, Clinch K, Evans GB, Tyler PC, Schramm VL, Palatnik-de-Sousa CB. Immucillins ImmA and ImmH Are Effective and Non-toxic in the Treatment of Experimental Visceral Leishmaniasis. PLoS Negl Trop Dis 2015; 9:e0004297. [PMID: 26701750 PMCID: PMC4689457 DOI: 10.1371/journal.pntd.0004297] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 11/20/2015] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Immucillins ImmA (IA), ImmH (IH) and SerMe-ImmH (SMIH) are synthetic deazapurine nucleoside analogues that inhibit Leishmania (L.) infantum chagasi and Leishmania (L.) amazonensis multiplication in vitro without macrophage toxicity. Immucillins are compared to the Glucantime standard drug in the chemotherapy of Leishmania (L.) infantum chagasi infection in mice and hamsters. These agents are tested for toxicity and immune system response. METHODOLOGY/PRINCIPAL FINDINGS BALB/c mice were infected with 107 amastigotes, treated with IA, IH, SMIH or Glucantime (2.5mg/kg/day) and monitored for clinical variables, parasite load, antibody levels and splenocyte IFN-γ, TNF-α, and IL-10 expression. Cytokines and CD4+, CD8+ and CD19+ lymphocyte frequencies were assessed in uninfected controls and in response to immucillins. Urea, creatinine, GOT and GPT levels were monitored in sera. Anti-Leishmania-specific IgG1 antibodies (anti-NH36) increased in untreated animals. IgG2a response, high levels of IFN-γ, TNF-α and lower levels of IL-10 were detected in mice treated with the immucillins and Glucantime. Immucillins permitted normal weight gain, prevented hepato-splenomegaly and cleared the parasite infection (85-89%) without renal and hepatic toxicity. Immucillins promoted 35% lower secretion of IFN-γ in uninfected controls than in infected mice. IA and IH increased the CD4+ T and CD19+ B cell frequencies. SMIH increased only the proportion of CD-19 B cells. IA and IH also cured infected hamsters with lower toxicity than Glucantime. CONCLUSIONS/SIGNIFICANCE Immucillins IA, IH and SMIH were effective in treating leishmaniasis in mice. In hamsters, IA and IH were also effective. The highest therapeutic efficacy was obtained with IA, possibly due to its induction of a TH1 immune response. Low immucillin doses were required and showed no toxicity. Our results disclose the potential use of IA and IH in the therapy of visceral leishmaniasis.
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Affiliation(s)
- Elisangela Oliveira Freitas
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Biochemistry, Albert Einstein College of Medicine, Yeshiva University, New York, New York, United States
| | - Dirlei Nico
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcus Vinícius Alves-Silva
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Morrot
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Keith Clinch
- The Ferrier Research Institute, Victoria University of Wellington, Wellington, New Zealand
| | - Gary B. Evans
- The Ferrier Research Institute, Victoria University of Wellington, Wellington, New Zealand
| | - Peter C. Tyler
- The Ferrier Research Institute, Victoria University of Wellington, Wellington, New Zealand
| | - Vern L. Schramm
- Department of Biochemistry, Albert Einstein College of Medicine, Yeshiva University, New York, New York, United States
| | - Clarisa B. Palatnik-de-Sousa
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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Diro E, Ritmeijer K, Boelaert M, Alves F, Mohammed R, Abongomera C, Ravinetto R, De Crop M, Fikre H, Adera C, Colebunders R, van Loen H, Menten J, Lynen L, Hailu A, van Griensven J. Use of Pentamidine As Secondary Prophylaxis to Prevent Visceral Leishmaniasis Relapse in HIV Infected Patients, the First Twelve Months of a Prospective Cohort Study. PLoS Negl Trop Dis 2015; 9:e0004087. [PMID: 26431253 PMCID: PMC4591988 DOI: 10.1371/journal.pntd.0004087] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 08/27/2015] [Indexed: 12/02/2022] Open
Abstract
Background Visceral leishmaniasis (VL) has become an important opportunistic infection in persons with HIV-infection in VL-endemic areas. The co-infection leads to profound immunosuppression and high rate of annual VL recurrence. This study assessed the effectiveness, safety and feasibility of monthly pentamidine infusions to prevent recurrence of VL in HIV co-infected patients. Methods A single-arm, open-label trial was conducted at two leishmaniasis treatment centers in northwest Ethiopia. HIV-infected patients with a VL episode were included after parasitological cure. Monthly infusions of 4mg/kg pentamidine-isethionate diluted in normal-saline were started for 12months. All received antiretroviral therapy (ART). Time-to-relapse or death was the primary end point. Results Seventy-four patients were included. The probability of relapse-free survival at 6months and at 12 months was 79% and 71% respectively. Renal failure, a possible drug-related serious adverse event, occurred in two patients with severe pneumonia. Forty-one patients completed the regimen taking at least 11 of the 12 doses. Main reasons to discontinue were: 15 relapsed, five died and seven became lost to follow-up. More patients failed among those with a CD4+cell count ≤ 50cells/μl, 5/7 (71.4%) than those with counts above 200 cells/μl, 2/12 (16.7%), (p = 0.005). Conclusion Pentamidine secondary prophylaxis led to a 29% failure rate within one year, much lower than reported in historical controls (50%-100%). Patients with low CD4+cell counts are at increased risk of relapse despite effective initial VL treatment, ART and secondary prophylaxis. VL should be detected and treated early enough in patients with HIV infection before profound immune deficiency installs. Relapse of visceral leishmaniasis (VL) among HIV co-infected patients occurs universally. Evidence on the use of secondary prophylaxis especially in anthroponotic transmission regions was lacking. It was found out now that secondary prophylaxis in addition to antiretroviral therapy for VL in people with HIV infection is useful to decrease the relapse rate. However, this intervention is more effective when started before profound immune deficiency. Patients with low CD4 cell counts continued to relapse significantly despite the use of secondary prophylaxis as compared to those with high CD4 cell counts. Earlier VL case detection and management is crucial. This is the first adequately powered trial that has addressed the use of secondary prophylaxis for prevention of VL relapse in HIV co-infected patients.
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Affiliation(s)
- Ermias Diro
- University of Gondar, Gondar, Ethiopia
- Institute of Tropical Medicine, Antwerp, Belgium
- * E-mail:
| | | | | | - Fabiana Alves
- Drugs for Neglected Diseases Initiative, Geneva, Switzerland
| | | | | | - Raffaella Ravinetto
- Institute of Tropical Medicine, Antwerp, Belgium
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | | | | | | | | | | | - Joris Menten
- Institute of Tropical Medicine, Antwerp, Belgium
| | | | - Asrat Hailu
- School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
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Sangshetti JN, Kalam Khan FA, Kulkarni AA, Arote R, Patil RH. Antileishmanial drug discovery: comprehensive review of the last 10 years. RSC Adv 2015. [DOI: 10.1039/c5ra02669e] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
This review covers the current aspects of leishmaniasis including marketed drugs, new antileishmanial agents, and possible drug targets of antileishmanial agents.
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Affiliation(s)
| | | | | | - Rohidas Arote
- Department of Molecular Genetics
- School of Dentistry
- Seoul National University
- Seoul
- Republic of Korea
| | - Rajendra H. Patil
- Department of Biotechnology
- Savitribai Phule Pune University
- Pune 411007
- India
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Nagle A, Khare S, Kumar AB, Supek F, Buchynskyy A, Mathison CJN, Chennamaneni N, Pendem N, Buckner FS, Gelb M, Molteni V. Recent developments in drug discovery for leishmaniasis and human African trypanosomiasis. Chem Rev 2014; 114:11305-47. [PMID: 25365529 PMCID: PMC4633805 DOI: 10.1021/cr500365f] [Citation(s) in RCA: 220] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Indexed: 02/08/2023]
Affiliation(s)
- Advait
S. Nagle
- Genomics
Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Shilpi Khare
- Genomics
Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Arun Babu Kumar
- Departments of Chemistry, Biochemistry, and Medicine, University
of Washington, Seattle, Washington 98195, United States
| | - Frantisek Supek
- Genomics
Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Andriy Buchynskyy
- Departments of Chemistry, Biochemistry, and Medicine, University
of Washington, Seattle, Washington 98195, United States
| | - Casey J. N. Mathison
- Genomics
Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Naveen
Kumar Chennamaneni
- Departments of Chemistry, Biochemistry, and Medicine, University
of Washington, Seattle, Washington 98195, United States
| | - Nagendar Pendem
- Departments of Chemistry, Biochemistry, and Medicine, University
of Washington, Seattle, Washington 98195, United States
| | - Frederick S. Buckner
- Departments of Chemistry, Biochemistry, and Medicine, University
of Washington, Seattle, Washington 98195, United States
| | - Michael
H. Gelb
- Departments of Chemistry, Biochemistry, and Medicine, University
of Washington, Seattle, Washington 98195, United States
| | - Valentina Molteni
- Genomics
Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
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Komitopoulou A, Tzenou T, Baltadakis J, Apostolidis J, Karakasis D, Harhalakis N. Is leishmaniasis an "unusual suspect" of infection in allogeneic transplantation? Transpl Infect Dis 2014; 16:1012-8. [PMID: 25412926 DOI: 10.1111/tid.12316] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 08/12/2014] [Accepted: 09/13/2014] [Indexed: 12/20/2022]
Abstract
Leishmaniasis is a disease of the immunocompetent population, more often affecting infants and young children. However, the number of leishmaniasis cases associated with immunosuppression has increased over the last 20 years. The visceral form of the disease, visceral leishmaniasis (VL), is identified as an opportunistic infection in immunosuppressed individuals, occurring mainly after solid organ transplantation, especially in renal transplant recipients. Limited data are available about VL after hematopoietic stem cell transplantation (HSCT). We report the cases of 3 patients with late VL after allogeneic HSCT, and review the literature.
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Affiliation(s)
- A Komitopoulou
- Department of Haematology and Bone Marrow Transplantation Unit, Evangelismos Hospital, Athens, Greece
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15
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Monge-Maillo B, Norman FF, Cruz I, Alvar J, López-Vélez R. Visceral leishmaniasis and HIV coinfection in the Mediterranean region. PLoS Negl Trop Dis 2014; 8:e3021. [PMID: 25144380 PMCID: PMC4140663 DOI: 10.1371/journal.pntd.0003021] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Visceral leishmaniasis is hypoendemic in Mediterranean countries, where it is caused by the flagellate protozoan Leishmania infantum. VL cases in this area account for 5%–6% of the global burden. Cases of Leishmania/HIV coinfection have been reported in the Mediterranean region, mainly in France, Italy, Portugal, and Spain. Since highly active antiretroviral therapy was introduced in 1997, a marked decrease in the number of coinfected cases in this region has been reported. The development of new diagnostic methods to accurately identify level of parasitemia and the risk of relapse is one of the main challenges in improving the treatment of coinfected patients. Clinical trials in the Mediterranean region are needed to determine the most adequate therapeutic options for Leishmania/HIV patients as well as the indications and regimes for secondary prophylaxis. This article reviews the epidemiological, diagnostic, clinical, and therapeutic aspects of Leishmania/HIV coinfection in the Mediterranean region.
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Affiliation(s)
- Begoña Monge-Maillo
- Tropical Medicine & Clinical Parasitology, Infectious Diseases Department, Ramón y Cajal Hospital, Madrid, Spain
| | - Francesca F. Norman
- Tropical Medicine & Clinical Parasitology, Infectious Diseases Department, Ramón y Cajal Hospital, Madrid, Spain
| | - Israel Cruz
- WHO Collaborating Centre for Leishmaniasis, Servicio de Parasitología, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Jorge Alvar
- Visceral Leishmaniasis Program, Drugs for Neglected Diseases initiative (DNDi), Geneva, Switzerland
| | - Rogelio López-Vélez
- Tropical Medicine & Clinical Parasitology, Infectious Diseases Department, Ramón y Cajal Hospital, Madrid, Spain
- * E-mail:
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16
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Singh N, Mishra BB, Bajpai S, Singh RK, Tiwari VK. Natural product based leads to fight against leishmaniasis. Bioorg Med Chem 2013; 22:18-45. [PMID: 24355247 DOI: 10.1016/j.bmc.2013.11.048] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 11/18/2013] [Accepted: 11/23/2013] [Indexed: 11/16/2022]
Abstract
The growing incidence of parasitic resistance against generic pentavalent antimonials, specifically for visceral disease in Indian subcontinent, is a serious issue in Leishmania control. Notwithstanding the two treatment alternatives, that is amphotericin B and miltefosine are being effectively used but their high cost and therapeutic complications limit their use in endemic areas. In the absence of a vaccine candidate, identification, and characterization of novel drugs and targets is a major requirement of leishmanial research. This review describes current drug regimens, putative drug targets, numerous natural products that have shown promising antileishmanial activity alongwith some key issues and strategies for future research to control leishmaniasis worldwide.
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Affiliation(s)
- Nisha Singh
- Molecular Immunology Laboratory, Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Bhuwan B Mishra
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Surabhi Bajpai
- Molecular Immunology Laboratory, Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Rakesh K Singh
- Molecular Immunology Laboratory, Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Vinod K Tiwari
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India.
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17
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Neumayr AL, Morizot G, Visser LG, Lockwood DN, Beck BR, Schneider S, Bellaud G, Cordoliani F, Foulet F, Laffitte EA, Buffet P, Blum JA. Clinical aspects and management of cutaneous leishmaniasis in rheumatoid patients treated with TNF-α antagonists. Travel Med Infect Dis 2013; 11:412-20. [DOI: 10.1016/j.tmaid.2013.05.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 05/09/2013] [Accepted: 05/13/2013] [Indexed: 10/26/2022]
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18
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Gopinath VS, Pinjari J, Dere RT, Verma A, Vishwakarma P, Shivahare R, Moger M, Kumar Goud PS, Ramanathan V, Bose P, Rao M, Gupta S, Puri SK, Launay D, Martin D. Design, synthesis and biological evaluation of 2-substituted quinolines as potential antileishmanial agents. Eur J Med Chem 2013; 69:527-36. [DOI: 10.1016/j.ejmech.2013.08.028] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/19/2013] [Accepted: 08/25/2013] [Indexed: 01/11/2023]
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19
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Ejazi SA, Ali N. Developments in diagnosis and treatment of visceral leishmaniasis during the last decade and future prospects. Expert Rev Anti Infect Ther 2013; 11:79-98. [PMID: 23428104 DOI: 10.1586/eri.12.148] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Human visceral leishmaniasis (VL) continues to be a life-threatening neglected tropical disease, with close to 200 million people at risk of infection globally. Epidemics and resurgence of VL are associated with negligence by the policy makers, economic decline and population movements. Control of the disease is hampered by the lack of proficient vaccination, rapid diagnosis in a field setting and severe side effects of current drug therapies. The diagnosis of VL relied largely on invasive techniques of detecting parasites in splenic and bone marrow aspirates. rK39 and PCR, despite problems related to varying sensitivities and specificities and field adaptability, respectively, are considered the best options for VL diagnosis today. No single therapy of VL currently offers satisfactory efficacy along with safety. The field of VL research only recently shifted toward actively identifying new drugs for safe and affordable treatment. Oral miltefosine and safe AmBisome along with better use of amphotericin B have been rapidly implemented in the last decade. A combination therapy will substantially reduce the required dose and duration of drug administration and reduce the chance of the development of resistance. In addition, identification of asymptomatic cases, vector control and treatment of post-kala-azar dermal leishmaniasis would allow new perspectives in VL control and management.
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Affiliation(s)
- Sarfaraz Ahmad Ejazi
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata 700032, India
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20
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21
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Dorlo TPC, Balasegaram M, Beijnen JH, de Vries PJ. Miltefosine: a review of its pharmacology and therapeutic efficacy in the treatment of leishmaniasis. J Antimicrob Chemother 2012; 67:2576-97. [PMID: 22833634 DOI: 10.1093/jac/dks275] [Citation(s) in RCA: 509] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Miltefosine is an alkylphosphocholine drug with demonstrated activity against various parasite species and cancer cells as well as some pathogenic bacteria and fungi. For 10 years it has been licensed in India for the treatment of visceral leishmaniasis (VL), a fatal neglected parasitic disease. It is the first and still the only oral drug that can be used to treat VL and cutaneous leishmaniasis (CL). The standard 28 day miltefosine monotherapy regimen is well tolerated, except for mild gastrointestinal side effects, although its teratogenic potential severely hampers its general use in the clinic and roll-out in national elimination programmes. The pharmacokinetics of miltefosine are mainly characterized by its long residence time in the body, resulting in extensive drug accumulation during treatment and long elimination half-lives. At the moment, different combination therapy strategies encompassing miltefosine are being tested in multiple controlled clinical trials in various geographical areas of endemicity, both in South Asia and East Africa. We here review the most salient pre-clinical and clinical pharmacological aspects of miltefosine, its mechanism of action against Leishmania parasites and other pathogens, and provide a systematic overview of the efficacy and safety data from all clinical trials of miltefosine, either alone or in combination, in the treatment of VL and CL.
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Affiliation(s)
- Thomas P C Dorlo
- Center for Tropical Medicine and Travel Medicine, Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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22
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Ansari MY, Dikhit MR, Sahoo GC, Das P. Comparative modeling of HGPRT enzyme of L. donovani and binding affinities of different analogs of GMP. Int J Biol Macromol 2012; 50:637-49. [PMID: 22327112 DOI: 10.1016/j.ijbiomac.2012.01.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 01/05/2012] [Accepted: 01/10/2012] [Indexed: 11/28/2022]
Abstract
Hypoxanthine-guanine phosphoribosyl transferase (HGPRT; EC 2.4.2.8) is a central enzyme in the purine recycling pathway. Parasitic protozoa (Leishmania donovani) cannot synthesize purines de novo and utilize the salvage pathway to produce purine bases. Thus, this enzyme is targeted in drug discovery and development. The model of the monomeric L. donovani HGPRT showed that this enzyme is an α/β type protein with a PRTase type I folding pattern. Among all of the computationally screened compounds, pentamidine, 1,3-dinitroadamantane, acyclovir and analogs of acyclovir had higher binding affinities than the real substrate (guanosine monophosphate). Amino acids of HGPRT that are frequently involved in the binding of these compounds are Lys 66, Asp 74, Arg 77, Asp 81, Val 88, Tyr 182, Arg 192 and Arg 194. It is predicted that patients suffering from both HIV and visceral leishmaniasis (VL) may benefit if they are treated with acyclovir or pentamidine in conjunction with first-line antileishmanial therapies such as miltefosine and AmBisome.
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Affiliation(s)
- Md Yousuf Ansari
- BioMedical Informatics Division, Rajendra Memorial Research Institute of Medical Sciences, Agam Kuan, Patna 800007, India
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Abstract
The available treatment options for visceral leishmaniasis (VL) have problems relating to efficacy, adverse effects and cost, making treatment a complex issue. We review the evidence relating to the different methods of treatment in relation to - efficacy and toxicity of the drugs in different areas of the world; ability to monitor side effects, length of treatment; ability of patients to pay for and stay safe during treatment, ability of the healthcare services to give intramuscular, intravenous or oral therapy; the sex and child-bearing potential of the patient and the immune status of the patient. The high mortality of untreated/ poorly treated VL infection makes the decisions paramount, but a unified and coordinated response by each area is likely to be more effective and informative to future policies than an ad hoc response. For patients in resource-rich countries, liposomal amphotericin B appears to be the optimal treatment. In South Asia, miltefosine is being used; the combination of single dose liposomal amphotericin B and short course miltefosine looks encouraging but has the problem of potential reproductive toxicities in females. In Africa, the evidence to switch from SSG is not yet compelling. The need to monitor and plan for evolving drug failure, secondary to leishmania parasite resistance, is paramount. With a few drugs the options may be limited; however, we await key ongoing trials in both Africa and India to explore the effects of combination treatment. If safe and reliable combinations are revealed by the ongoing studies, it is far from clear as to whether this will avoid leishmania parasite resistance. The development of new drugs to add to the armamentarium is paramount. Lessons can be learnt from the management of diseases such as tuberculosis and malaria in terms of planning the switch to combination treatment. As important as establishing the best choice for specific antileishmanial agent is ensuring treatment centers, which can best manage the problems encountered during treatment, specifically malnutrition, bleeding, intercurrent infections, drug side effects and detecting and treating underlying immunosuppression.
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Affiliation(s)
- E M Moore
- Hospital for Tropical Diseases, University College London Hospital
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Buffet PA, Rosenthal É, Gangneux JP, Lightburne E, Couppié P, Morizot G, Lachaud L, Marty P, Dedet JP. [Therapy of leishmaniasis in France: consensus on proposed guidelines]. Presse Med 2010; 40:173-84. [PMID: 21106333 DOI: 10.1016/j.lpm.2010.09.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 09/09/2010] [Accepted: 09/15/2010] [Indexed: 10/18/2022] Open
Abstract
Because it relies on potentially toxic, difficult-to-handle, or expensive compounds the therapy of leishmaniasis is still a complex issue in 2010, especially for visceral leishmaniasis in immuno-suppressed subjects, or in patients with cutaneous and mucosal involvement. This induces a wide diversity of observed therapeutic practices, some being sub-optimal. The Société de Pathologie Exotique organised a meeting dedicated to the therapy of leishmaniasis in France that led to the first consensus on therapeutic guidelines. Liposomal amphotericin B is the first-line option for visceral leishmaniasis both in immunocompetent, and immunosuppressed patients (cumulated doses of 20 mg/kg and 30-40 mg/kg, respectively). Secondary prophylaxis with either liposomal amphotericin B, pentamidine or meglumine antimoniate is proposed to patients with heavy immunosuppression until immunity has been restored for at least 6 months. While the efficacy of new topical formulations of paromomycin is being tested, patients with Old World cutaneous leishmaniasis may be left untreated, or be administered a combination of superficial cryotherapy plus intralesional antimony, or even--in complex situations--receive systemic therapy. The efficacy of a short course of pentamidine (L. guyanensis/L. panamensis) and a 20-day schedule of meglumine antimoniate (L. braziliensis) is solidly established. However, in well-defined situations, local therapy of New World cutaneous leishmaniasis is now considered acceptable.
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Affiliation(s)
- Pierre A Buffet
- Université Paris 6, UMR945 47, hôpital Pitié-Salpêtrière, service de parasitologie-mycologie, boulevard de l'hôpital, 75651 Paris cedex 13, France.
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25
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Current world literature. Curr Opin Allergy Clin Immunol 2010; 10:603-7. [PMID: 21030837 DOI: 10.1097/aci.0b013e3283413126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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