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Pacheco-Fernandez T, Markle H, Verma C, Huston R, Gannavaram S, Nakhasi HL, Satoskar AR. Field-Deployable Treatments For Leishmaniasis: Intrinsic Challenges, Recent Developments and Next Steps. Res Rep Trop Med 2023; 14:61-85. [PMID: 37492219 PMCID: PMC10364832 DOI: 10.2147/rrtm.s392606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/08/2023] [Indexed: 07/27/2023] Open
Abstract
Leishmaniasis is a neglected tropical disease endemic primarily to low- and middle-income countries, for which there has been inadequate development of affordable, safe, and efficacious therapies. Clinical manifestations of leishmaniasis range from self-healing skin lesions to lethal visceral infection with chances of relapse. Although treatments are available, secondary effects limit their use outside the clinic and negatively impact the quality of life of patients in endemic areas. Other non-medicinal treatments, such as thermotherapies, are limited to use in patients with cutaneous leishmaniasis but not with visceral infection. Recent studies shed light to mechanisms through which Leishmania can persist by hiding in cellular safe havens, even after chemotherapies. This review focuses on exploring the cellular niches that Leishmania parasites may be leveraging to persist within the host. Also, the cellular, metabolic, and molecular implications of Leishmania infection and how those could be targeted for therapeutic purposes are discussed. Other therapies, such as those developed against cancer or for manipulation of the ferroptosis pathway, are proposed as possible treatments against leishmaniasis due to their mechanisms of action. In particular, treatments that target hematopoietic stem cells and monocytes, which have recently been found to be necessary components to sustain the infection and provide a safe niche for the parasites are discussed in this review as potential field-deployable treatments against leishmaniasis.
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Affiliation(s)
- Thalia Pacheco-Fernandez
- Division of Emerging and Transfusion Transmitted Disease, Center for Biologics Evaluation and Research Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Hannah Markle
- Division of Emerging and Transfusion Transmitted Disease, Center for Biologics Evaluation and Research Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Chaitenya Verma
- Department of Pathology, Wexner Medical Center, The Ohio State University, Columbus, OH, 43201, USA
| | - Ryan Huston
- Department of Pathology, Wexner Medical Center, The Ohio State University, Columbus, OH, 43201, USA
- Department of Microbiology, Wexner Medical Center, The Ohio State University, Columbus, OH, 43201, USA
| | - Sreenivas Gannavaram
- Division of Emerging and Transfusion Transmitted Disease, Center for Biologics Evaluation and Research Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Hira L Nakhasi
- Division of Emerging and Transfusion Transmitted Disease, Center for Biologics Evaluation and Research Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Abhay R Satoskar
- Department of Pathology, Wexner Medical Center, The Ohio State University, Columbus, OH, 43201, USA
- Department of Microbiology, Wexner Medical Center, The Ohio State University, Columbus, OH, 43201, USA
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Elawad MA, Elkhalifa MEM, Hamdoon AAE, Salim LHM, Ahmad Z, Ayaz M. Natural products derived steroids as potential anti-leishmanial agents; disease prevalence, underlying mechanisms and future perspectives. Steroids 2023; 193:109196. [PMID: 36764565 DOI: 10.1016/j.steroids.2023.109196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 01/31/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
Leishmaniasis is a vector-borne infection caused by protozoan parasites from the genus leishmania and is among the most neglected tropical diseases. It is highly prevalent disease, affecting about 350 million population worldwide. Only limited number of anti-leishmanial agents are approved for clinical use till now and they are associated with side effects and have limited efficacy. Subsequently, natural products based discovery of more safe and effective drugs against leishmania is under scientific consideration. Various studies reported the efficacy of natural products against intracellular and extracellular forms of leishmania species. This work is aimed to evaluate current literature focused on the anti-leihmanial efficacy of steroidal moieties from natural products and their mechanism of action. Compounds including steroidal saponins, steroidal alkaloids and phytosterols were found to exhibit considerable anti-leishmanial efficacy. For instance, steroidal saponin, (25R)-spirost-5-en-3b-ol,3-O-α-rhamnopyranosyl-(1 → 4)-α-rhamnopyranosyl-(1 → 4)-[a-rhamnopyranosyl-(1 → 2)]-glucopyranoside isolated from A. paradoxum has completely eradicated Leishmania major promastigotes at 50 µg mL-1 dose. Spirostanic saponins isolated from Solanum paniculatum L. were effective against Leishmania amazonensis promastigotes. Turgidosterones isolated from Panicum turgidum exhibited high leishmanicidal potentials against Leishmania donovani promastigotes with IC50 of 4.95-8.03 µg mL-1 and even better activity against amastigotes exhibiting an IC50 of 4.50-9.29 µg mL-1. Likewise, racemoside-A from Asparagus racemosus was found effective against an antimonial sensitive (AG83) and antimonial resistant (GE1F8R) strains of the L. donovani. Moreover, steroidal alkaloids including hookerianamide-1, hookerianamide-H, hookerianamide-J, hookerianamide-K, dehydrosarsalignone, vagenine-A, sarcovagine-C, holaphylline, saracodine, holamine, 15-α hydroxyholamine, holacurtin, N-desmethyl holacurtine and elasticine has exhibited time and dose-dependent efficacy against various strains of leishmania. β-sitosterol was found active against multiple strains of leishmania. These compounds mainly exhibit their therapeutic efficacy via liberation of ROS, mitochondrial depolarization, morphological and ultra-structural changes, accumulation of lipid droplets, depletion of non-protein thiols and triggering apoptotic pathways. In conclusion, leishmaniasis is a major health problem in many countries. Plants-derived steroids moieties have reveled efficacy against leishmaniasis and is a source of lead compounds. Further detailed molecular studies are warranted for the discovery of more effective and safe anti-leishmanial drugs.
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Affiliation(s)
- Mohammed Ahmed Elawad
- Public Health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, Saudi Arabia; University of Khartoum, Faculty of Public and Environmental Health, Sudan.
| | - Modawy Elnour Modawy Elkhalifa
- Public Health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, Saudi Arabia; University of Khartoum, Faculty of Public and Environmental Health, Sudan.
| | - Alashary Adam Eisa Hamdoon
- Public Health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, Saudi Arabia; University of Khartoum, Faculty of Public and Environmental Health, Sudan.
| | - Liga Hasan Mohammed Salim
- Public Health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, Saudi Arabia; University of Khartoum, Faculty of Public and Environmental Health, Sudan.
| | - Zeeshan Ahmad
- Department of Pharmacy, Facutly of Biological Sciences, University of Malakand, Chakdara 18000, Dir (L), KPK, Pakistan
| | - Muhammad Ayaz
- Department of Pharmacy, Facutly of Biological Sciences, University of Malakand, Chakdara 18000, Dir (L), KPK, Pakistan.
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Abdul Naeem M, Aamir M, Ijaz F, Amin N, Khurram Aftab R. Detection of asymptomatic Leishmania donovani in healthy voluntary blood donors. Transfus Clin Biol 2023; 30:228-231. [PMID: 36634863 DOI: 10.1016/j.tracli.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/11/2023]
Abstract
OBJECTIVE To check incidence of Asymptomatic Leishmania donovani reporting to Armed Forces Institute of Transfusion Rawalpindi. MATERIAL AND METHODS Two thousand (n = 2000) consecutive healthy voluntary blood donors were tested for 18 s rRNA by Real time Polymerase chain reaction. One thousand (n = 1000) subject's permanent resident of Azad Kashmir along with a thousand (n = 1000) healthy voluntary blood donors from rest of Pakistan were included. The study was carried out over a period of three months Jun - Aug 2020. RESULTS Total of 2000 blood donors were enrolled in the study, all were males with age ranging from 16 to 60 years. Stratification based on residence, 1000 (50 %) resided in the Azad kashmir, 349 (17.45 %) were from Islamabad and Rawalpindi, 541 (27.05 %) from Punjab mainly residing in Lahore and Multan, 110 (5.5 %) were from other cities of Pakistan. Grouping on the basis of age, 55.25 % (n = 1105) of the donors were 16-25 years old, 19.45 % (n = 389) were in age range of 26-40 years old, 15.55 % (n = 311) were 41-50 years old and 9.75 % (n = 195) 51-60 years old. No donor was diagnosed as an asymptomatic carrier. CONCLUSION Screening of blood donors for Leishmania donovani is not recommended.
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Affiliation(s)
| | - Mohammad Aamir
- Clinical Chemistry, Shifa International Hospital Islamabad, Pakistan
| | - Farhat Ijaz
- Department of Physiology, Combined Military Hospital Lahore Medical College & Institute of Dentistry, (NUMS), Lahore, Pakistan.
| | - Nayyar Amin
- Armed Forces Institute of Transfusion, Rawalpindi, Pakistan
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Solomon M, Gimple A, Fuchs I, Cicurel A, Meninger T, Avni D, Nasereddin A, Jaffe CL, Schwartz E. Failure to Detect Leishmania in the Blood of Patients with Old-World Cutaneous Leishmaniasis: Implications for Blood Donation. Am J Trop Med Hyg 2022; 107:996-998. [PMID: 36216319 PMCID: PMC9709017 DOI: 10.4269/ajtmh.21-1120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 05/02/2022] [Indexed: 11/07/2022] Open
Abstract
Cutaneous leishmaniasis (CL) is endemic in Israel, caused mainly by Leishmania major (L. major) and L. tropica. In addition, returning travelers import another leishmanial species such as L. braziliensis. Although we are dealing with a skin disease, the blood bank in Israel does not accept blood donations from people infected with CL in cases of multiple lesions due to the possibility of transfusion. Our purpose was to investigate the prevalence of Leishmania in the blood of patients with active or previous CL. This pilot study screened patients with active or previous CL for parasites in their blood. All patients were infected in Israel or were returning travelers with leishmaniasis acquired in Latin America. Patients were seen at the Sheba Medical Center. In addition, patients were seen at their homes in L. tropica and L. major endemic regions in Israel. Blood samples were taken from each patient for culture and polymerase chain reaction (PCR). Altogether 62 blood samples were examined (L. tropica = 26, L. major = 33, and L. braziliensis = 3). Twenty-seven patients had an active disease and 35 were recovered. All blood cultures and PCR were negative for parasites except one blood sample that was PCR positive for L. braziliensis. The findings of our study, although a small sample, suggest that people with active or recent CL caused by L. major and L. tropica, do not harbor parasites in their blood. Thus, their exclusion from blood donation should be revisited. Further studies are needed with larger sample size and highly sensitive tests.
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Affiliation(s)
- Michal Solomon
- Department of Dermatology, Chaim Sheba Medical Center, Tel Hashomer, Israel
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ariel Gimple
- Department of Dermatology, Chaim Sheba Medical Center, Tel Hashomer, Israel
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Inbal Fuchs
- Faculty of Health Sciences, Department of Family Medicine, Ben Gurion University, Clalit Health Services, Southern District, Beersheba, Israel
| | - Assi Cicurel
- Faculty of Health Sciences, Department of Family Medicine, Ben Gurion University, Clalit Health Services, Southern District, Beersheba, Israel
| | - Tal Meninger
- The Institute of Geographic Medicine and Tropical Diseases and the Laboratory for Tropical Diseases Research, Sheba Medical Center, Tel Hashomer, Israel
| | - Dror Avni
- The Institute of Geographic Medicine and Tropical Diseases and the Laboratory for Tropical Diseases Research, Sheba Medical Center, Tel Hashomer, Israel
| | - Abed Nasereddin
- Department Microbiology and Molecular Genetics, Kuvin Center, The Hebrew University - Hadassah Medical Center, Jerusalem, Israel
| | - Charles L. Jaffe
- Department Microbiology and Molecular Genetics, Kuvin Center, The Hebrew University - Hadassah Medical Center, Jerusalem, Israel
| | - Eli Schwartz
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- The Institute of Geographic Medicine and Tropical Diseases and the Laboratory for Tropical Diseases Research, Sheba Medical Center, Tel Hashomer, Israel
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Looking for Dog Blood Donors in an Endemic Area for Vector-Borne Infections of Central Italy. Animals (Basel) 2022; 12:ani12070817. [PMID: 35405807 PMCID: PMC8997097 DOI: 10.3390/ani12070817] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Dogs have proved to be competent reservoir hosts for several vector-borne pathogens, whose prevalence varies according to the area and over time due to the increased movement of people and their pets, climate changes, and vector adaptation strategies. The purpose of this study was to determine the prevalence of some vector-borne pathogens in dog blood donors, living in central Italy. Blood samples of 126 donors included were tested for a broad screening panel for infectious pathogens. The differences in pathogens prevalence according to age, sex, and breeds were tested. Overall, 50 animals tested positive for at least one pathogen. A tendency of hemoplasmas to be more prevalent in older dogs (41.2%) was noted. We highlight the difficulties of selecting healthy blood donor dogs in an endemic area for vector-borne infections. Close collaboration between specialists is important in the interpretation of positive test results. Finally, we underline the important role of blood donors as an epidemiological tool for active surveillance against canine infectious diseases. Abstract Dogs are proved to be competent reservoir hosts for several vector-borne pathogens. Their prevalence varies according to the geographical area. Many vector-borne pathogens may be transmitted by blood transfusion. The purpose of this study was to determine the serological and molecular prevalence of some vector-borne pathogens in dog blood donors, living in central Italy. Blood samples of 126 donors (19 breeds) included were tested for a broad serological and DNA-base tests panel. The differences in pathogen prevalence according to age, sex, and breeds were tested (chi-square test, Fisher’s exact test). Overall, 50 animals (39.7%) tested positive at PCR (polymerase chain reaction) and/or serology (IFAT, indirect fluorescent antibody test) for at least one pathogen. Three dogs were positive at both serology and PCR. A tendency of hemoplasmas to be more prevalent in older dogs (41.2%) compared to the younger ones (25.7%) was noted. We highlight the difficulties of selecting healthy blood donor dogs in an endemic area for vector-borne infections. It is important to choose the serological and biomolecular investigations panel that is most suited to the donor’s environment. Close collaboration between clinician and parasitologists is important in the interpretation of IFAT and PCR results. Finally, we underline the important role of blood donors as an epidemiological tool for active surveillance against canine vector-borne diseases.
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Olías-Molero AI, de la Fuente C, Cuquerella M, Torrado JJ, Alunda JM. Antileishmanial Drug Discovery and Development: Time to Reset the Model? Microorganisms 2021; 9:2500. [PMID: 34946102 PMCID: PMC8703564 DOI: 10.3390/microorganisms9122500] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 11/26/2021] [Accepted: 12/01/2021] [Indexed: 01/27/2023] Open
Abstract
Leishmaniasis is a vector-borne parasitic disease caused by Leishmania species. The disease affects humans and animals, particularly dogs, provoking cutaneous, mucocutaneous, or visceral processes depending on the Leishmania sp. and the host immune response. No vaccine for humans is available, and the control relies mainly on chemotherapy. However, currently used drugs are old, some are toxic, and the safer presentations are largely unaffordable by the most severely affected human populations. Moreover, its efficacy has shortcomings, and it has been challenged by the growing reports of resistance and therapeutic failure. This manuscript presents an overview of the currently used drugs, the prevailing model to develop new antileishmanial drugs and its low efficiency, and the impact of deconstruction of the drug pipeline on the high failure rate of potential drugs. To improve the predictive value of preclinical research in the chemotherapy of leishmaniasis, several proposals are presented to circumvent critical hurdles-namely, lack of common goals of collaborative research, particularly in public-private partnership; fragmented efforts; use of inadequate surrogate models, especially for in vivo trials; shortcomings of target product profile (TPP) guides.
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Affiliation(s)
- Ana Isabel Olías-Molero
- Department of Animal Health, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.I.O.-M.); (C.d.l.F.); (M.C.)
| | - Concepción de la Fuente
- Department of Animal Health, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.I.O.-M.); (C.d.l.F.); (M.C.)
| | - Montserrat Cuquerella
- Department of Animal Health, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.I.O.-M.); (C.d.l.F.); (M.C.)
| | - Juan J. Torrado
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Universidad Complutense de Madrid, 28040 Madrid, Spain;
| | - José M. Alunda
- Department of Animal Health, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.I.O.-M.); (C.d.l.F.); (M.C.)
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Fürnkranz U, Walochnik J. Nosocomial Infections: Do Not Forget the Parasites! Pathogens 2021; 10:pathogens10020238. [PMID: 33669761 PMCID: PMC7923136 DOI: 10.3390/pathogens10020238] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/08/2021] [Accepted: 02/17/2021] [Indexed: 01/03/2023] Open
Abstract
Nosocomial infections (NIs) pose an increasing threat to public health. The majority of NIs are bacterial, fungal, and viral infections; however, parasites also play a considerable role in NIs, particularly in our increasingly complex healthcare environment with a growing proportion of immunocompromised patients. Moreover, parasitic infections acquired via blood transfusion or organ transplantation are more likely to have severe or fatal disease outcomes compared with the normal route of infection. Many of these infections are preventable and most are treatable, but as the awareness for parasitic NIs is low, diagnosis and treatment are often delayed, resulting not only in higher health care costs but, importantly, also in prolonged courses of disease for the patients. For this article, we searched online databases and printed literature to give an overview of the causative agents of parasitic NIs, including the possible routes of infection and the diseases caused. Our review covers a broad spectrum of cases, ranging from widely known parasitic NIs, like blood transfusion malaria or water-borne cryptosporidiosis, to less well-known NIs, such as the transmission of Strongyloides stercoralis by solid organ transplantation or nosocomial myiasis. In addition, emerging NIs, such as babesiosis by blood transfusion or person-to-person transmitted scabies, are described.
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The Effects of Pre-Storage Leukoreduction on the Conservation of Bovine Whole Blood in Plastic Bags. BIOLOGY 2020; 9:biology9120444. [PMID: 33291543 PMCID: PMC7761855 DOI: 10.3390/biology9120444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/30/2020] [Accepted: 10/31/2020] [Indexed: 11/17/2022]
Abstract
Simple Summary Blood transfusion is a life-saving veterinary therapeutic procedure. While fractionated blood components are used in humans, whole blood is most commonly used in animals, especially for farm animals. Whole blood contains white blood cells that can cause a transfusion reaction in animals. Here, we proposed that using a blood bag with leukocyte filtration is sufficient for blood conservation under field conditions and thus can be an option for transfusion medicine in the case of farm animals. The filtered bag was efficient in removing white cells from cattle whole blood and could be used under field conditions. Blood stored after white blood cells were removed showed less acidic load. Further experimental studies are required to prove that blood without white cells results in a decrease in transfusion reactions in cattle. Abstract Leukoreduction (LR) is a technique that consists of reducing the number of leukocytes in whole blood or blood components that can contribute to decreasing storage lesions and the occurrence of post-transfusion complications. We propose that using a blood bag with pre-storage leukocyte filtration is sufficient for blood conservation under field conditions. Ten healthy Nelore cows were used. Whole blood was sampled from each animal and stored at 2 to 6 °C in CPD/SAG-M (citrate phosphate dextrose bag with a saline, adenine, glucose, mannitol satellite bag) triple bags (Control) and in CPD/SAG-M quadruple bags with a leukocyte filter (Filter). At baseline and after 7, 14, 21, 28, 35, and 42 days (D0, D7, D14, D21, D28, D35, and D42, respectively), complete hematological, blood gas, and biochemical evaluations were determined. The filtered bag removed 99.3% of white blood cells from cattle blood, and the entire filtration process was performed in the field. There was a reduction in the number of red blood cells (RBCs) in both groups from D14 onward, with a decrease of 19.7% and 17.1% at D42 for the Control and Filter bags, respectively. The hemoglobin (Hb) concentration had variation in both groups. Potassium, pO2, pCO2, and sO2 increased, and sodium, bicarbonate, and pH decreased during storage. The filtered bag was efficient in removing white cells from cattle whole blood and could be used under field conditions. Blood stored after LR showed differences (p < 0.05) in blood gas analysis towards a better quality of stored blood (e.g., higher pH, lower pCO2, higher sO2). Further experimental studies are required to prove that blood without white cells results in a decrease in transfusion reactions in cattle.
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Silva LP, Montenegro S, Werkauser R, Sales KGDS, Soares FCS, Costa VMA, Bezerra AC, Pinto MBDA, Ferreira SM, Neitzke-Abreu HC, Dantas-Torres F, Lima Junior MSDC. Asymptomatic Leishmania infection in blood donors from a major blood bank in Northeastern Brazil: a cross-sectional study. Rev Inst Med Trop Sao Paulo 2020; 62:e92. [PMID: 33263698 PMCID: PMC7694538 DOI: 10.1590/s1678-9946202062092] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 09/07/2020] [Indexed: 11/22/2022] Open
Abstract
This study has estimated the risk of Leishmania transmission via
blood transfusion in one of the largest blood banks in Northeastern Brazil,
where visceral leishmaniasis is endemic. Five hundred blood samples from donors
were tested for circulating Leishmania spp. DNA by real-time
PCR. Positive samples were tested by a species-specific conventional PCR
targeting Leishmania infantum . Overall, 6.2% (95% CI:
4.1–8.3%) of the samples carried Leishmania DNA and in one
sample the species was confirmed as L. infantum . No
statistically significant differences were found in relation to gender, sex,
education level, incomeas well as the place of residence between positive and
negative blood donors. Our results confirm the presence of asymptomatic
Leishmania carriers among blood donors in a large blood
bank in Northeastern Brazil. Considering the studied population, we estimate
that for every 1,000 blood donors screened, 41 to 83 will be positive for
Leishmania DNA. This finding reinforces the urgent need for
elaborating specific Blood bank guidelines to allow the early detection of
asymptomatic Leishmania carriers among blood donors before
their blood products are transfused to uninfected individuals.
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Affiliation(s)
| | - Silvia Montenegro
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Imunologia, Recife, Pernambuco, Brazil
| | - Roberto Werkauser
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Imunologia, Recife, Pernambuco, Brazil
| | | | - Fábia Carla Silva Soares
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Imunologia, Recife, Pernambuco, Brazil
| | | | | | | | | | | | - Filipe Dantas-Torres
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Imunologia, Recife, Pernambuco, Brazil
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Shang XF, Yang CJ, Morris-Natschke SL, Li JC, Yin XD, Liu YQ, Guo X, Peng JW, Goto M, Zhang JY, Lee KH. Biologically active isoquinoline alkaloids covering 2014-2018. Med Res Rev 2020; 40:2212-2289. [PMID: 32729169 PMCID: PMC7554109 DOI: 10.1002/med.21703] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 06/08/2020] [Accepted: 06/18/2020] [Indexed: 12/13/2022]
Abstract
Isoquinoline alkaloids, an important class of N-based heterocyclic compounds, have attracted considerable attention from researchers worldwide since the early 19th century. Over the past 200 years, many compounds from this class were isolated, and most of them and their analogs possess various bioactivities. In this review, we survey the updated literature on bioactive alkaloids and highlight research achievements of this alkaloid class during the period of 2014-2018. We reviewed over 400 molecules with a broad range of bioactivities, including antitumor, antidiabetic and its complications, antibacterial, antifungal, antiviral, antiparasitic, insecticidal, anti-inflammatory, antioxidant, neuroprotective, and other activities. This review should provide new indications or directions for the discovery of new and better drugs from the original naturally occurring isoquinoline alkaloids.
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Affiliation(s)
- Xiao-Fei Shang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P.R. China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, PR China
| | - Cheng-Jie Yang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P.R. China
| | - Susan L. Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Jun-Cai Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xiao-Dan Yin
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xiao Guo
- Tibetan Medicine Research Center of Qinghai University, Qinghai University Tibetan Medical College, Qinghai University, 251 Ningda Road, Xining 810016, P.R. China
| | - Jing-Wen Peng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P.R. China
| | - Masuo Goto
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Ji-Yu Zhang
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, PR China
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599
- Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung 40402, Taiwan
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Mardani A. Prevention strategies of transfusion-transmitted parasitic infections (TTPIs): Strengths and challenges of current approaches, and evaluation of the strategies implemented in Iran. Parasite Epidemiol Control 2020; 9:e00141. [PMID: 32149193 PMCID: PMC7052507 DOI: 10.1016/j.parepi.2020.e00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 01/27/2020] [Accepted: 02/16/2020] [Indexed: 11/30/2022] Open
Abstract
Background Several strategies are being implemented in blood transfusion centers of the world to prevent the transfusion-transmitted parasitic infections (TTPIs). The objective of this study was to determine and describe the strategies to minimize the transmission risk of parasitic agents via blood transfusion in Iran. Methods This study was conducted in the Iranian blood transfusion organization (IBTO). The data were extracted from the latest version of the “medical interview” standard operating procedure (SOP). Results The donor selection is the first and only step to reduce the risk of TTPIs in endemic and non-endemic areas of Iran. In all blood transfusion centers of the IBTO, the blood donation volunteers with a previous history of malaria, Chagas disease, visceral leishmaniasis (VL), muco-cutaneous leishmaniasis and babesiosis, as well as those with clinical toxoplasmosis, cutaneous leishmaniasis (CL) and with a history of residence in, or travel to, malaria-endemic areas are permanently or temporarily deferred from the blood donation. Conclusions Since malaria, toxoplasmosis and VL are endemic in parts of Iran, as well as the increasing travels to endemic areas and immigrations from endemic to non-endemic areas of parasitic infections, the extensive use of blood and blood components and the asymptomatic occurrence of most parasitic infections in blood donors, the donor selection strategy is not sufficient to prevent the TTPIs. Therefore, the changing of donor selection process and the use of other common preventive strategies are recommended to reduce the risk of TTPIs, especially for high-risk groups of toxoplasmosis and VL.
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Affiliation(s)
- Ahmad Mardani
- Department of Microbiology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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12
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Leiby DA, O'Brien SF, Wendel S, Nguyen ML, Delage G, Devare SG, Hardiman A, Nakhasi HL, Sauleda S, Bloch EM. International survey on the impact of parasitic infections: frequency of transmission and current mitigation strategies. Vox Sang 2018; 114:17-27. [PMID: 30523642 DOI: 10.1111/vox.12727] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/25/2018] [Accepted: 10/29/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVES Globally, blood safety interventions have been successful in mitigating risk of the major transfusion-transmitted (TT) viruses. However, strategies that address risk from parasites are comparatively limited. TT parasites are often regional in nature, posing unique challenges; we sought to understand their impact on blood safety. MATERIALS AND METHODS An electronic questionnaire was distributed to transfusion medicine leaders in 100 countries. The survey focused on specific questions pertaining to four parasitic diseases: babesiosis, Chagas, leishmaniasis and malaria. Respondents provided data on historical TT cases, local epidemiology, policies to mitigate risk and an assessment of public health perceptions for each aetiologic agent. RESULTS Twenty-eight (28%) surveys were returned from countries in Europe (n = 13), the Americas (n = 6), Africa (n = 4), Asia (n = 3) and Oceana (n = 2). Historically, no cases of TT leishmaniasis were reported, TT babesiosis was exclusive to Canada and the USA, TT Chagas was limited to the Americas and Spain, while TT malaria was cosmopolitan. Mitigation efforts varied widely; malaria was the most frequently tested parasitic disease. The public's perception of risk for parasitic agents was low, while that of health authorities in endemic countries was higher. CONCLUSION The global impact of parasitic infections on blood safety and related mitigation efforts varied widely by parasite epidemiology, test availability, public health priorities and socioeconomic constraints. While parasites continue to pose a risk to blood safety, the successful mitigation of viral risk has elevated the prominence of TT parasites in many locations, thereby requiring consideration of mitigation efforts.
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Affiliation(s)
- David A Leiby
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA
| | - Sheila F O'Brien
- Epidemiology and Surveillance, Canadian Blood Services, Ottawa, ON, USA
| | | | - Megan L Nguyen
- Transmissible Diseases Department, American Red Cross Holland Laboratory, Rockville, MD, USA
| | - Gilles Delage
- Medical Affairs, Microbiology, Héma-Quebec, Montreal, Quebec, Canada
| | | | | | - Hira L Nakhasi
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA
| | - Silvia Sauleda
- Transfusion Safety Laboratory, Catalonian Blood Bank (Banc de Sang i Teixits de Catalunya), Barcelona, Spain
| | - Evan M Bloch
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Leishmania infection in blood donors: A new challenge in leishmaniasis transmission? PLoS One 2018; 13:e0198199. [PMID: 29902188 PMCID: PMC6001978 DOI: 10.1371/journal.pone.0198199] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 05/15/2018] [Indexed: 11/26/2022] Open
Abstract
Transfusion-transmitted leishmaniasis has been a concern in regions endemic for the disease. Whether immediate or delayed, the risks posed by this mode of transmission call for careful assessment. The purpose of this study was to detect Leishmania infection in blood donors living in an endemic area and to investigate progression to the disease in these individuals. Immunofluorescent antibody test, enzyme-linked immunosorbent assay, leishmaniasis rapid test, and the polymerase chain reaction were applied to 430 donors in an initial evaluation. Of those donors with at least one positive test, 50 were reevaluated four years later by the same methods, as were 25 controls who had been negative on the same tests. In the first evaluation, Leishmania infection was detected in 41.4% (95% CI: 36.7–46.1) of donors (n = 430). None of the 75 reevaluated individuals had developed the disease, but retesting revealed positivity in at least one test in 36.0% (95% CI: 25.1–46.9) of donors. Of the 50 initially testing positive, 50% remained so on retesting. Of the 25 initially negative controls, two tested positive in the subsequent evaluation. The severity of the parasitosis and the risk of transfusion transmission warrant investigation of the potential inclusion of methods for Leishmania detection into blood banks for effective screening of infected donors.
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14
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Alcheikh A, Lynar S, Brown C, Lee A, Bryant C. Unusual case of splenomegaly and pancytopenia in a returned traveller. Intern Med J 2017; 47:1325-1326. [PMID: 29105271 DOI: 10.1111/imj.13604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 06/04/2017] [Accepted: 06/15/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Ahmad Alcheikh
- Department of Haematology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Sarah Lynar
- Department of Haematology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Christina Brown
- Department of Haematology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Andie Lee
- Department of Haematology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Christian Bryant
- Department of Haematology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
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15
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A systematic review and meta-analysis of the prevalence of Leishmania infection in blood donors. Transfus Apher Sci 2017; 56:544-551. [DOI: 10.1016/j.transci.2017.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 06/05/2017] [Accepted: 07/03/2017] [Indexed: 11/18/2022]
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16
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Asfaram S, Fakhar M, Mohebali M, Mardani A, Banimostafavi ES, Ziaei Hezarjaribi H, Soosaraei M. Asymptomatic human blood donors carriers of Leishmania infantum: Potential reservoirs for visceral leishmaniasis in northwestern Iran. Transfus Apher Sci 2017. [PMID: 28648574 DOI: 10.1016/j.transci.2017.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Little is known regarding transfusion-transmitted leishmaniasis (TTL) and the real global incidence of visceral leishmaniasis (VL) among blood donors as carriers of Leishmania spp. in endemic VL foci including Iran. Recent epidemiological evidences indicate that blood donor may be harbor of Leishmania infantum (L. infantum) infection in Iran. METHODS The aim of the present study was to determine the prevalence of Leishmania infection among blood donors in a main endemic focus of VL in Iran using DAT and polymerase chain reaction (PCR) based methods Between July-September 2016, blood samples were collected from 600 apparently healthy blood donors from six blood donation centers and blood donation mobile unit in Ardabil Province, where VL cases had been recorded. Each of these samples was tested for anti-Leishmania antibodies, in direct agglutination test (DAT), and for L. infantum kDNA, the PCR-based assay. RESULTS Of 600 blood donors, which were examined, 23 (3.8%) blood donors were seropositive by DAT and of 23 seropositive subjects, 82.6% (19/23) were positive by PCR. All the seropositive cases were males except one of them was female. CONCLUSIONS Our findings showed that many asymptomatic human carriers of L. infantum live in the endemic regions of northwestern Iran and potentially act as reservoirs of infection; those must be considered carefully by arrangement VL control strategies in the country.
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Affiliation(s)
- Shabnam Asfaram
- Student Research Committee, Department of Parasitology and Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahdi Fakhar
- Molecular and Cell Biology Research Center, Department of Parasitology and Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Mehdi Mohebali
- Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Mardani
- Department of Microbiology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | | | - Hajar Ziaei Hezarjaribi
- Molecular and Cell Biology Research Center, Department of Parasitology and Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Masoud Soosaraei
- Student Research Committee, Department of Parasitology and Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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17
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Strategies for reducing the risk of transfusion-transmitted leishmaniasis in an area endemic for Leishmania infantum: a patient- and donor-targeted approach. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2017; 16:130-136. [PMID: 28488962 DOI: 10.2450/2017.0201-16] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 01/16/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND In the Balearic Islands, as in other areas of the Mediterranean basin, there is a significant proportion of asymptomatic Leishmania (L.) infantum-infected blood donors, who may represent an important threat to transfusion safety. The Balearic Islands blood bank, located in an area endemic for L. infantum, carried out a study of donors and patients to investigate the impact of this infectious disease on blood safety in the region. MATERIALS AND METHODS Twenty asymptomatic Leishmania-infected blood donors were followed-up between 2008 and 2011 to investigate the evolution of Leishmania infection in asymptomatic carriers. Their blood was periodically tested for anti-Leishmania antibodies by western blot and for Leishmania DNA by quantitative polymerase chain reaction (qPCR). Additionally, the prevalence of L. infantum infection was investigated in a group of 68 multiply transfused patients to ascertain the risk of transfusion-transmitted leishmaniasis (TTL) in the region, taking into account regular blood component production practices such as pre-storage leucodepletion and pathogen reduction technology. RESULTS All 20 donors remained asymptomatic over the study period (2008-2011). Most donors had repeatedly positive qPCR results, either persistently or intermittently, but showed no symptoms of Leishmaniasis. Levels of parasitaemia were remarkably low in asymptomatic donors, with values ≤1 parasite/mL. Despite multiple transfusions received over 15 years, no transfused patient studied was infected with L. infantum. DISCUSSION L. infantum-infected donors can remain asymptomatic for at least 3 years. In our region, no cases of TTL were detected, despite an active search in multiply transfused patients. This seems to be related to two independent variables: (i) a low concentration of the parasite in the peripheral blood of asymptomatic carriers and (ii) the application of methods with proven efficacy against TTL, such as leucodepletion and pathogen reduction technology.
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Abstract
Leishmaniasis is one of the major health problems in Iran. Although the incidence of visceral leishmaniasis (VL) is reported almost everywhere, the northwestern Iran is one of the major endemic regions.To do this study, clinical, laboratory as well as disease characteristics of children admitted to Children Cure and Health Hospital, Tabriz University of Medical Sciences, were examined as the reference hospital for the treatment of VL in northwestern Iran.In this study, 156 children hospitalized in a pediatric hospital from 2000 to 2015 for VL were included. Gender, age, anemia, thrombocytopenia, increase in the erythrocyte sedimentation rate (ESR), alanine transaminase (SGPT), and aspartate transaminase (SGOT), major clinical manifestations such as fever, splenomegaly, hepatomegaly, treatment type, and the disease were studied.Among 156 patients examined in this study, 88 (56.41%) and 68 (43.59%) participants were male and female, respectively. The minimum and maximum ages of the infection were 4.5 months and 6 years, respectively. The mean age of the infected children was 17.94 months. Fever (94.24%) and splenomegaly (86.53%) were the most common symptoms of this disease among children. In addition, 49 (31.41%), 64 (41.02%), 18 (11.53%), 33 (21.15%), and 40 (25.64%) participants had leukopenia, hemoglobin count below 8, ESR above 100, ESR above 60, and platelets below 100,000, respectively. Moreover, 39 (25%) and 17 (10.89%) patients had high aspartate transaminase (AST) and alanine transaminase (ALT). Also, 96.2% of the participants responded to the treatment with glucantime. The rate of mortality in this study was 3.2%.Clinically, almost all children had fever and splenomegaly at the onset of the disease. In addition, hepatic involvement was observed in all cases of mortality, cases with a lack of initial response, and those in need of auxiliary medication. Hepatic involvement appears to be related to the prognosis of the disease. In our study, bone marrow aspiration (BMA) and positive direct antiglobulin test (DAT) were observed in 66.67% and more than 90% of the patients, respectively.Children with VL in northwestern Iran responded well to glucantime. In case of resistance, amphotericin B was a good alternative. Early diagnosis is essential in reducing mortality rate.
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Affiliation(s)
- Babak Abdinia
- Department of Pediatrics, Faculty of Medicine
- Medical Education Research Center, Tabriz University of Medical Sciences,Tabriz, Iran
- Correspondence: Babak Abdinia, Department of Pediatrics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5136735886, Iran (e-mail: )
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Jimenez-Marco T, Fisa R, Girona-Llobera E, Cancino-Faure B, Tomás-Pérez M, Berenguer D, Guillen C, Pujol A, Iniesta L, Serra T, Mascaró M, Gascó J, Riera C. Transfusion-transmitted leishmaniasis: a practical review. Transfusion 2016; 56 Suppl 1:S45-51. [DOI: 10.1111/trf.13344] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 07/15/2015] [Accepted: 08/10/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Teresa Jimenez-Marco
- Fundació Banc de Sang i Teixits de les Illes Balears
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS); Majorca, Spain
| | - Roser Fisa
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Enrique Girona-Llobera
- Fundació Banc de Sang i Teixits de les Illes Balears
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS); Majorca, Spain
| | - Beatriz Cancino-Faure
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Miriam Tomás-Pérez
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Diana Berenguer
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Carmen Guillen
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Alba Pujol
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Laura Iniesta
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
| | - Teresa Serra
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS); Majorca, Spain
| | | | - Joan Gascó
- Son Espases University Hospital; Majorca Spain
| | - Cristina Riera
- Laboratori de Parasitologia, Facultat de Farmàcia; Universitat de Barcelona; Barcelona Spain
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