Showing 9 results for Khamesipour
Ali Khamesipour, Mahmoud Nateghi Rostami, Hossein Keshavarz, Akram Miramin Mohammadi, Minoo Tasbihi, Seyyedeh Tahereh Shahrestani, Abdolfattah Sarrafnejad,
Volume 1, Issue 3 (9-2010)
Abstract
Background and Aim: The heterogenous population of memory T lymphocytes is distinguished based on surface markers and effector functions such as cytokine secretion. Recently, two subsets of memory T cells are defined by expression of chemokine receptor CCR7 and CD45RA designating as "central memory" T cells (TCM) and "effector memory" T cells (TEM). The objective of this staudy was to evaluate the phenotype and function of these lymphocytes in healed cases of cutaneous leishmaniasis.
Methods: The phenotype of lymphocytes were determined in blood samples of 13 volunteers with history of self healing cutaneous leishmaniasis (HCL) and in 6 healthy controls.
Results: No significant difference was found in memory T cell subsets between HCL volunteers and healthy controls using flow cytometry. However, following sorting of different memory subsets, a significantly higher proliferation was seen in cells of HCL volunteers comparing to the control group. A significantly higher IFN-γ response in TEM and a significantly higher IL-2 response in TCM were observed in cell culture of HCL volunteers comparing controls.
Conclusion: The responses were elicited when the cells were stimulate with SLA in vitro, it is concluded Leishmania-specific TEM and Leishmania-specific TCM subsets exist in HCL volunteers and since the volunteers with history of CL presumed to be protected against reinfection, it seems that both TCM and TEM play role in the protection against Leishmania infection in these individuals.
Ali Khamesipour, Alireza Khatemi, Iraj Sharifi, Mahdie Bahrami, Amir Javadi, Seyyed Ebrahim Eskandari, Alireza Firooz, Alireza Fekri, Mohammad Reza Aflatoonian,
Volume 1, Issue 4 (12-2010)
Abstract
Background and Aim: Treatment of cutaneous leishmaniasis, especially when caused by L. tropica, is challenging. Meglumine antimoniate (Glucantime®) is used as the standard treatment, but multiple injectiond are necessary. The objective of this study was to compare the efficacy of weekly intralesional injections with twice weekly injections of Glucantime for the treatment of anthroponotic cutaneous leishmaniasis (ACL).
Methods: This randomized open clinical trial was conducted, in Bam, Kerman province, Iran. 96 eligible patients according to inclusion and exclusion criteria who were willing to participate were included. The included patients were randomly assigned into two groups, one group treated with weekly intralesional injections of Glucantime® and the other group treated with intralesional Glucantime® twice a week. Type and size of each lesion (induration, ulcer and scar) were recorded weekly. Complete healing was defined as complete re-epithelialization and absence of induration in all lesions and was considered as the primary outcome measure.
Results: A total of 48 patients completed the study complete cure was seen in 24 of 27 (89%) patients who received weekly intralesional MA with a mean duration of healing equals to 70±10 days. Complete cure was seen in 24 of 31 (77%) patients who received intralesional MA twice a week, the mean duration of healing in the latter group was 58±5 days. There was no significant difference between the two groups (P=0.23).
Conclusion: It seems that the efficacy of intralesional injections of Glucantime® once a week is similar to efficacy of twice a week Glucantime® injections.
Ali Khamesipour, Mohammad Hossein Ghoorchi, Alireza Khatami, Seyed Ebrahim Eskandari, Amir Javadi, Hamed Zartab, Maryam Sarraf-Yazdy, Alireza Firooz,
Volume 2, Issue 1 (3-2011)
Abstract
Background and Aim: Cutaneous leishmaniasis (CL) is endemic in Iran, where it is one of the most important health problems. Both anthroponotic CL (ACL) caused by L. tropica and zoonotic CL (ZCL) caused by L. major are reported. Antimoniate derivatives as the standard therapy for CL need multiple injections and are not easy to tolerate for the patients. This study was conducted in Mashhad to compare the efficacy of weekly versus twice a week intralesional injections of meglumine antimoniate (MA) in the treatment of ACL.
Methods: This randomised controlled trial was performed during 2006 to 2008 in Mashhad, Iran. Using computerized sequence of random numbers, participants were randomly allocated in the two arms of the study: one receiving weekly and the other receiving twice-a-week intralesional injections of MA. The lesion size, induration and healing rate were assessed, recorded and compared. Healing was defined as complete re-epithelialisation and disappearance of induration.
Results: A total of 252 suspected CL patients with 372 lesions were screened. 82 parasitologically proven cases with 121 lesions caused by L. tropica were included and 74 patients with 113 lesions completed the study. At 12th week after initiation of treatment, complete healing was observed in 38 out of 44 lesions (86.4%) in the group which received weekly intralesional MA injection. The median time-to-heal in this group was 36 days (95% confidence interval [CI]: 32.0-39.9). Complete healing was recorded in 60 out of 69 lesions (86.9%) in the group which received twice a week intralesional injections of MA with a median time-to-heal of 25 days (95% CI: 20.9-29.1). While no significant difference was observed between the two groups in terms of complete healing rate (P=0.999), time-to-heal was significantly different between the 2 groups (P=0.003).
Conclusion: It seems that the effectiveness of twice-weekly intralesional injections of MA is similar to once-weekly regimen while the former regimen causes more rapid healing of lesions.
Mahnaz Mahmoudi Rad, Akram Miramin Mohammadi, Parviz Tousi, Ali Khamesipour, Amirhoushang Ehsani, Seyyed Ebrahim Eskandari, Niki Mahmoudi Rad, Yasaman Mirdamadi, Zeinab Ghasemi, Mohsen Gerami Shoar, Shima Younespour,
Volume 2, Issue 2 (6-2011)
Abstract
Background and Aim: Malassezia is a lipophilic and dimorphic fungus which has different species. Some of them can be found as natural flora on skin and in some conditions may cause pityriasis versicolor. The aim of this study was to identify Malassezia species associated with pityriasis versicolor in Iranian patients, using PCR-RFLP.
Methods: In this study out of 65 patients with pityriasis versicolor to have pityriasis versicolor,isolates of 60 patients were positive. Malassezia species. using by PCR-RFLP. The Internal Transcribed Spacer 2 (ITS2) region was amplified by PCR employing the ITS3 and ITS4 primers and The restriction endonucleases AluI, BanI and MspAI were selected for producing distinct RFLP patterns.
Results: M. furfur (36.7%), M. globosa (30.0%), M. sympodialis (20.0%), M. slooffiae (8.3%), M. restricta (3.3%) and M. obtusa (1.7%) were the microorganisms responsible for the infection among participants. The M. sympodialis infection was strongly correlated with the female gender (P=0.02).
Conclusion: Our findings suggest that, the most common Malassezia species associated with pityriasis versicolor was M. furfur, followed by M. globosa.
Farzaneh Zarrinkar, Ali Khamesipour, Akram Miraminmohammadi, Ebrahim Eskandari, Mahmoud Nateghi Rostami, Esmaeil Fallah,
Volume 3, Issue 3 (9-2012)
Abstract
Background and Aim: Leishmanization (LZ) is an effective tool to prevent
cutaneous leishmaniasis. Standardization of Leishmania is
the main drawback of LZ. The aim of this study was to assess the effect of
various preservatives on the infectivity of Leishmania.Methods: L.major harvested
at different stages of growth logarithmic, early and late stationary phases
were frozen using various preservatives of saccharose, glycerol, trehalose,
glucose, sorbitol, and dimethyl sulfoxide (DMSO). The harvested parasites were
inoculated into BALB/c mice before and after freezing. The infectivity of the
parasites was checked. IFA test was used to assess the rate of metacyclic
parasite.
Results: The ratio of
live Leishmania in different growth stages and various
preservatives were 89.0% to 98.2%. The lesion development in groups of mice
which received Leishmania in sacarose + glycerol or DMSO was started from 3rd
week and at 5th week all the mice showed lesion. The group of mice
which were inoculated with early or late stationary phases in saccharose +
glucose, saccharose + glycerol, glycerol 15% or DMSO showed lesion from 4th
to 5th week and in 100% showed lesions at 8th week. The
rate of metacyclic parasites increases from log phase to early and late
stationary phases.
Conclusion: There was a
correlation between percent of live parasite and the rate of lesion development
in BALB/c mice. Saccharose 22.5% + Glyserol 22.5% were the most appropriate preservative to freeze L. major. IFA
test is used to detect metacyclic Leishmania. A correlation was seen between the rate of
lesion development in BALB/c mice and IFA positivity.
Morteza Akbari, Anis Askari Zadeh, Kayvan Sadri, Mehrdad Iranshahi, Mahmoud Reza Jaafari, Ali Khamesipour, Ali Badiee,
Volume 8, Issue 4 (Volume 8, Number 4 2018)
Abstract
Background and Aim: Curcumin possesses diverse pharmacologic effects including anti-inflammatory, antioxidant, antiproliferative and antiangiogenic activities. The aim of this study was to develop liposomal formulation of curcumin and evaluate the leishmanial effects of its topical use against L. major in vitro and in vivo.
Methods: Nanoliposomes containing 1, 2 or 3% curumin were prepared by fusion method and characterized for their size, morphology and stability. The in vitro efficacy of liposomal form of Curcumin against promastigotes and amastigotes form of L. major was also evaluated. Moreover, the leishmanial effect of formulations was evaluated in infected BALB/c mice. The lesions were treated topically by different formulations twice a day, for 4 weeks. During this time and 4 weeks after treatment, lesions size was measured every week. The level of splenic parasite burdens was investigated in week 4 after parasite inoculation.
Results: Curcumin showed no leishmanicidal effect against live promasigotes and amastigotes in culture media. There was no significant difference between treated and control animals regarding lesion size and splenic parasite burden.
Conclusion: The results of this study showed that nanoliposomes containing curcumin in topical form has no significant leishmanicidal effect in vitro and in vivo against
L. major.
Behnaz Shojaedin Givi, Ali Khamesipour, Hossein Naderimanesh,
Volume 10, Issue 2 (2019, Volume 10, Number 2 2019)
Abstract
Background and Aim: Drug delivery through the microneedle array has been considered as an easy and non-invasive method in recent years. The purpose of this study was to design and construct an array of biodegradable polymeric microneedles containing Amphotericin-B to introduce this system and its use in the treatment of cutaneous lesions caused by Leishmania major parasite inoculation as a model in skin infections.
Methods: In this study, microneedles were fabricated by three-step molding method, which included master mold making, polymeric matrix that blending of polyvinyl pyrrolidine and methacrylic acid and finally casting.
Results: The identification of Amphotericin-B in polymeric microscopic compositions was investigated by absorption and emission spectroscopy. Also, the mechanical strength of microneedles, which confirms their ability to penetrate the skin, was investigated by a transducer.
Conclusion: In this study, the design and fabrication of a skin-permeable polymeric microneedle array with biodegradability and biocompatibility characteristics in physiological environment was performed. Using the properties of designed needles, loading of Amphotericin-B was used for the treatment of leishmaniasis and skin fungal infections.
Seyedebrahim Eskandari, Ali Khamesipour, Alireza Firooz, Minoo Tasbihi, Akram Miraminmohammadi, Khadijeh Tavakoli, Maryam Ahmadi,
Volume 13, Issue 2 (Volume 13, No 2 2022)
Abstract
Background and Aim: Leishmaniasis is a parasitic disease transmitted by sandflies and is one of the endemic diseases of Iran. With the spread of the Covid-19 epidemic worldwide, the virus will interface with endemic infectious diseases in different regions. In this study, coronavirus disease was evaluated in patients with a history of leishmaniasis referred to the Center of Research and Training in Skin Diseases and Leprosy.
Methods: A total of 91 patients with a history of leishmaniasis were studied for possible SARS-CoV-2 infection. The number of patients referred to the Center of Research and Training in Skin Diseases and Leprosy during the coronavirus epidemic was also compared with the same period before the epidemic
Results: A total of 60% of patients with leishmaniasis
did not report coronavirus disease. Twenty-one percent of cases had a mild corona disease, 13% had a moderate and 3% had severe corona disease. Only a single death was reported in corona patients with a history of cutaneous leishmaniasis. The number of referrals before the beginning of the corona epidemic was twice as high as during the epidemic.
Conclusion: In these participants, mortality and side effects of COVID-19 were significantly less reported. However, further studies are needed to evaluate the immune system and cutaneous leishmaniasis protection against COVID-19. Various factors can be effective in reducing patients during the epidemic, including not going to medical centers, reducing the number of trips, and observance of health issues.
Minoo Tasbihi, Akram Miraminmohammadi, Ali Khamesipour, Seyedebrahim Eskandari, Alireza Firooz, Saman Ahmadnasrollahi,
Volume 14, Issue 2 (Volume 14, No 2 2023)
Abstract
Background and Aim: Cutaneous leishmaniasis is one of the most important health problems in Iran. There is still no effective vaccine available against human leishmaniasis and current treatment is based on chemotherapy. Conventional drugs are toxic and expensive, and drug resistance has caused the search for new treatments. Tofacitinib is a Janus kinase inhibitor that disturbs the signaling pathway of several cytokines in the immune system. The aim of this study was to evalute the effect of topical tofacitinib 2% ointment in healing cutaneous leishmaniasis in Balb/C mice.
Methods: This experimental study was performed using tofacitinib and glucantim drugs in 40 female Balb/C mice. The metacyclic form of promastigote of Leishmania major standard strain (MRHO/IR/75/ER) was injected into the footpad of the mice, the mice were divided into 4 treatment groups: tofacitinib, glucantim, tofacitinib-glucantim and control without treatment. The treatment period was 28 days. The footpad thickness of all groups was measured at the end of each week.
Results: After the end of the treatment in the groups treated with tofacitinib, a significant decrease in the size of lesion and the footpad thickness was observed compared to the control group without treatment (P<0.01).
Conclusion: It seems that tofacitinib ointment accelerates lesion healing in Balb/C mice and has worked similarly to standard glucantim treatment. Ointment can be a better option for leishmaniasis treatment and due to its ease of use and no need for painful injections it can be considered as an option for the treatment of patients with cutaneous leishmaniasis.
