Pdf 331.71 K
Total Page:16
File Type:pdf, Size:1020Kb
Mashhad University of Medical Sciences Clinical Research Development Center (MUMS) Reviews in Clinical Medicine Ghaem Hospital Systemic Treatments of Leishmaniasis: A Narrative Review Ahmad Reza Taheri (MD)1, Sara Sabouri Rad (MD)1, Sara Molkara (MD)2* 1Cutaneous Leishmaniasis Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. 2Resident of Dermatology, Imam Reza hospital, Mashhad University of Medical Sciences, Mashhad, Iran. ARTICLE INFO ABSTRACT Article type Cutaneous leishmaniasis is a prevalent parasitic infection in humans. According to the Review article reports published in several localities across the world, leishmaniasis is an endemic Article history and is often diagnosed through the smear examination of the affected area using a Received: 18 Aug 2019 microscope.disease in certain The treatments regions in ofIran. choice Leishmaniasis for leishmaniasis is transmitted involve the through use of sandfly pentavalent bites Revised: 8 Sep 2019 antimony compounds, such as meglumine antimoniate and sodium stibogluconate. Accepted: 22 Sep 2019 However, other medications have been proposed for the treatment of leishmaniasis, and there is ongoing research for effective, less harmful treatments. This narrative Keywords Cutaneous Leishmaniasis review aimed to summarize various systemic treatments for leishmaniasis. Systemic Treatment Please cite this paper as: Taheri AR, Sabouri Rad S, Molkara S. Systemic Treatments of Leishmaniasis: A Narrative Review. Rev Clin Med. 2019;6(3):91-97. Introduction Leishmaniasis is a prevalent disease of trop- less and might heal within a few months, while ic and sub-tropic regions, affecting 15 million they often cause impaired function, secondary in- individuals across the globe. Based on tropism, fections or persistent wounds (5,9,10). leishmaniasis is categorized into four clinical syn- - dromes, including cutaneous, mucocutaneous, dif- taneous clearing of the wounds without interven- fuse cutaneous, and visceral leishmaniasis (1-5). tionsThere in arethe severalpatients, influential including factors immunology in the spon and Cutaneous leishmaniasis is a chronic dermal genetics, locality, number and species of the para- condition, which is characterized by several clini- site, clinical symptoms, and severity of the lesions, cal symptoms due to the variable immunity status of the host, affected area, and age of the patients. of treatment. Considering the large variability of Leishmania major and L. tropica cause urban and theseand the factors, outcome spontaneous significantly recovery affects may the prolong, course rural leishmaniasis, respectively. The organism thereby leading to the scars that care particular- was transmitted to humans by Phlebotomus pa- ly problematic in various body parts that may be patasi in the Old World and is transmitted by the of cosmetic or functional importance. The leish- Lutzomyia species in the New World (1, 4-8). maniasis lesions in such areas require immediate - treatment. Therefore, treatments are considered ythematous papules, later developing into raised, crucial to controlling the dissemination of leish- ulceratedAfter the lesions biting (2,9,10).of the fly, The lesions lesions appear are aspain er- maniasis and its transmission between individu- *Corresponding author: Sara Molkara. This is an Open Access article distributed under the terms of the Resident of Dermatology, Imam Reza hospital, Mashhad Creative Commons Attribution License (http://creativecommons. University of Medical Sciences, Mashhad, Iran. org/licenses/by/3.0), which permits unrestricted use, distribution, E-mail: [email protected] and reproduction in any medium, provided the original work is Tel: 985138583845 properly cited. Rev Clin Med 2019; Vol 6 (No 3) 91 Published by: Mashhad University of Medical Sciences (http://rcm.mums.ac.ir) Taheri AR et al. als (especially in case of patients with immuno- maniasis. Glucantime is administered daily via intramuscular injection, while sodium stiboglu- the key objectives of leishmaniasis treatment in- conate is administered via slow intravenous injec- cludedeficiency) the treatment and preventing of all the recurrence.patients, limiting Some the of tion. Glucantime is available in Iran. According to spread of the lesions, eradicating the reservoirs of the guidelines of the World Health Organization the Leishmania species, controlling the spread of (WHO), the prescribed dose of antimony for sys- the disease, preventing the development of large temic treatment is 20 mg/kg of pentavalent anti- scars (particularly facial scars), and preventing mony, which is equal to 75 mg/kg of glucantime. the associated complications and disease recur- - rence (11,12). tains 425 milligrams of antimony (1.5 g of glucan- Various local and systemic treatments are avail- Since each five-milliliter shot of glucantime con able for leishmaniasis, including physical inter- be prescribed per 20 kilograms of the body weight ventions (e.g., curettage, surgery, thermotherapy, oftime), patients. 1-3 five-milliliter In general, shotsthe treatment of glucantime period could for cryotherapy, and laser therapy) and medications rural and urban leishmaniasis is two and three (e.g., derivatives of antimony and nanoparticle weeks, respectively. If the signs of recovery are not treatments). Since most of these treatments have observed within four weeks after the treatment, not been thoroughly examined in the clinical the treatment is considered a failure, and systemic setting, their dependability remains uncertain. treatment with the previous dosage is prescribed Meanwhile, some of the main causes of unreliable treatment methods for leishmaniasis include the of glucantime involves the gradual increase of the high costs, poor patient compliance due to the dosageagain (18). as one The quarter,most efficient one half, approach and three to the quar use- long-term need for intramuscular/intravenous in- jections, and risk of systemic toxicity (11,13). third day, respectively, followed by the adminis- One of the main challenges that limits the treat- trationters of theof the final full dosage dose on on the the fourth first, second,day and andon- ment options for leishmaniasis is the variable wards (19). Theoretically, glucantime acts by affecting the various Leishmania species (14,15). The present bioenergetic pathways of the amastigote form of studyefficacy aimed of the to medicationssummarize various that are systemic used against treat- Leishmania and disrupting oxidation and glycol- ments for leishmaniasis. ysis processes, thereby reducing the cell levels of adenosine triphosphate (20). According to re- Literature Review Pentavalent Antimony Compounds of glucantime include musculoskeletal pain, nau- Antimony has been used in medicine for cen- seaports, and the vomiting, most significant diarrhea, clinical abdominal adverse pain, effects head- turies, and its importance has long been recog- aches, cough, pneumonitis, loss of appetite, leth- application of this element was the treatment of of glucantime treatment, complications such as leishmaniasis.nized. In the pastIn the century, 20th century, the most Gaspar significant Vianna cardiac,argy, fever, hepatological, erythema, and and hives. nephrological At the final stagesdisor- (a pioneer in the treatment of leishmaniasis) re- ders have also been reported. Among the other ported the effects of potassium antimony tartrate adverse effects of this compound are the elevation (a trivalent antimony compound) on mucocutane- of pancreatic enzymes (observation of pancreati- ous leishmaniasis. However, the widespread use tis in some cases, particularly in patients with im- of this compound in the following years revealed paired renal function), dose-dependent changes its adverse effects, which led to the cessation of its in the electrocardiogram (most commonly T-wave use. Since the 1940s, other less harmful trivalent and ST-segment changes and QT prolongation), antimony compounds have become widespread and atrial and ventricular arrhythmia rarely (21). for the treatment of leishmaniasis, which are cur- The mechanism of action of sodium stiboglu- rently among the most common treatment op- conate remains unclear. It is speculated that this tions in this regard. However, their application is drug functions through affecting the enzymes that are involved in DNA synthesis. Several side-ef- the injection of these compounds and the asso- fects have been documented for sodium stibo- ciatedassociated complications with specific affect limitations. patient Forcompliance, instance, gluconate, and reports have suggested the risk thereby leading to the development of resistance of sodium stibogluconate intolerance syndrome. in some endemic regions (16,17). Some of the associated symptoms include fever, Currently, meglumine antimoniate (glucantime) arthralgia, myalgia, edema, and gastrointestinal and sodium stibogluconate (pentostam) are the complications, which may manifest at the initial most commonly prescribed pentavalent antimony stages of treatment. It is notable that these symp- derivatives for the treatment of cutaneous leish- toms are not dose-dependent and do not justify 92 Rev Clin Med 2019; Vol 6 (No 3) Published by: Mashhad University of Medical Sciences (http://rcm.mums.ac.ir) Taheri AR et al. the cessation of treatment. On the other hand, the ous leishmaniasis, 46% of the patients were re- main symptoms of sodium stibogluconate toxicity ported to recover after receiving treatment with include cardiotoxicity, pancreatitis,