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El-Bali MA, Abdulhakim A, Mohamed RT, El-Malky MA, Bakri RA, Al-Harthi SA. Antiprotozoal potential of Salvadora persica against three virulent subtypes of Blastocystis sp. J Parasit Dis 2020; 44:694-701. [PMID: 33184536 DOI: 10.1007/s12639-020-01247-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 07/13/2020] [Indexed: 12/15/2022] Open
Abstract
Blastocystis sp. is a group of anaerobic protozoa parasitizing the gastrointestinal tract of humans and a broad variety of animals. Evidences of Blastocystis parasites resistance development to antiprotozoal drugs urge the exploration of new therapeutics. Antiprotozoal potential of Salvadora persica, a medicinal plant traditionally used for oral hygiene, was evaluated in vitro against Blastocystis sp. human isolates. Until now, no study has described the effect of S. persica extracts on this parasitic protozoa. Blastocystis sp. positive stool samples collected from patients with gastrointestinal complaints and asymptomatic individuals diagnosed by microscopy were furthermore cultured in vitro and characterized by PCR and multiplex-PCR using sequence-tagged-site primers to determine their subtypes. Out of 21 Blastocystis sp. isolates, five were determined as ST1, 14 as ST3, and two as ST5 subtypes. Antiprotozoal activity of untreated and heat-treated S. persica roots aqueous extracts was evaluated in vitro by serial dilutions on three Blastocystis sp. subtypes; ST1, ST3, and ST5 isolated from symptomatic patients. A significant killing activity was observed with both, untreated and heat-treated aqueous extracts of S. persica at minimal concentration of 2.5 μl/ml compared to parasites' growth controls (P < 0.05). Maximal antiprotozoal effect was reached at a concentration of 20 µl/ml of S. persica aqueous extract. Means of growth inhibition effect obtained with untreated and heat-treated extracts at 40 µl/ml against the three subtypes of Blastocystis sp. were 80% (SD 2.3) and 82% (SD 1.1), respectively. No significant difference was observed in the inhibitory effect of S. persica extracts between the three Blastocystis sp. subtypes. Aqueous extract of S. persica roots contains therefore heat-stable components with significant antiprotozoal activity against Blastocystis sp. subtypes ST1, ST3, and ST5 in vitro. Further investigations are required to determine and characterize the active antiprotozoal components of S. persica roots and their evaluation in vivo.
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Affiliation(s)
- Mohammed A El-Bali
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Saudi Arabia
| | - Abdulhafid Abdulhakim
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Saudi Arabia
| | - Raafat T Mohamed
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Saudi Arabia.,Department of Parasitology, Faculty of Medicine, El-Minia University, El-Minia, Egypt
| | - Mohamed A El-Malky
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Saudi Arabia
| | - Rowaida A Bakri
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Saudi Arabia
| | - Saeed A Al-Harthi
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Saudi Arabia
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El-Malky MM, Mowafy NM, Zaghloul DA, Al-Harthi SA, El-Bali MA, Mohamed RT, Bakri RA, Mohamed AA, Elmedany S. Prevalence of Cryptosporidium species isolated from diarrheic children in Makkah, Saudi Arabia. Trop Biomed 2018; 35:76-81. [PMID: 33601779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cryptosporidiosis has been identified as a significant underlying cause of morbidity and mortality worldwide. Studies in high and low income countries have recognized the importance of Cryptosporidium as a cause of diarrhea. The objectives of the current study were to determine the prevalence rate and genotypes of Cryptosporidiumin in diarrheic children in Makkah Region. A total of 1,380 fecal samples were collected from children aged up to 14 years attending 3 major hospitals of Makkah between March 2015 and March 2016. Stool collected were subjected to direct microscopic examination and crypto antigen detection using ImmunoCard STAT, Cryptosporidium/Giardia rapid test. Part of each positive stool sample was kept frozen at -20ºC for molecular characterization. Initial screening by immunochromatographic detection kit revealed 23 positive cases. PCR was performed for positive cases by amplification of a piece of the gene encoding the small (18S) subunit of rRNA producing a 435-438 bp product. Cryptosporidium genotyping was performed by RFLP analysis of PCR products. Genotyping revealed 18 cases C. hominis genotype, 4 cases C. parvaum genotype and one sample failed to be amplified. The data revealed a higher incidence of the common human species C. hominis (81.8%). The detection of both C. hominis and C. parvaum genotypes point to the possibility of both anthroponotic and zoonotic transmission routes occurring in Makkah region. Further studies are needed to verify the subgenotypes of Cryptosporidium to elucidate the real transmission modes and hence plan for effective control strategies.
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Affiliation(s)
- M M El-Malky
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
- Department of Medical Parasitology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - N M Mowafy
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
- Department of Medical Parasitology, Faculty of Medicine, Minia University, El-Minia, Egypt
| | - D A Zaghloul
- Department of Medical Parasitology, Faculty of Medicine, Assuit University, Assuit, Egypt, Laboratory and Blood Bank Department, Al-Noor Specialist Hospital, Makkah, Saudi Arabia
| | - S A Al-Harthi
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
| | - M A El-Bali
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
| | - R T Mohamed
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
- Department of Medical Parasitology, Faculty of Medicine, Minia University, El-Minia, Egypt
| | - R A Bakri
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
| | - A A Mohamed
- Department of Medical Parasitology, Faculty of Medicine, Umm AL-Qura University, Makkah, Kingdom of Saudi Arabia
- Department of Medical Parasitology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - S Elmedany
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Tanta University, Egypt
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Mohamed RT, El-Bali MA, Mohamed AA, Abdel-Fatah MA, El-Malky MA, Mowafy NM, Zaghlool DA, Bakri RA, Al-Harthi SA. Subtyping of Blastocystis sp. isolated from symptomatic and asymptomatic individuals in Makkah, Saudi Arabia. Parasit Vectors 2017; 10:174. [PMID: 28388938 PMCID: PMC5383971 DOI: 10.1186/s13071-017-2114-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 03/27/2017] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Blastocystis is a group of cosmopolitan gastrointestinal parasite of humans and a wide variety of animals. These anaerobic protozoans include more than 17 specific small-subunit ribosomal RNA subtypes, of which nine are found in humans with a variable geographical distribution. Until now, no study has described the Blastocystis subtypes present in Saudi Arabia. METHODS In total, 1,262 faecal samples were collected from patients with gastrointestinal complaints and asymptomatic individuals visiting two major hospitals. All samples were analysed by F1/R1 diagnostic PCR, microscopy and culture methods. The subtypes of Blastocystis sp. isolates were determined by the sequenced-tagged site (STS)-based method. RESULTS One-hundred-thirty-three positive cases were detected by F1/R1 diagnostic PCR, of which 122 were also positive by the culture method and 83 by direct microscopy. The sensitivities of direct microscopy and the culture method were 62% and 92%, respectively. Subtype (ST3) was the most prevalent (80.5%), followed by ST1 (14.5%) and ST2 (5%). ST4, ST5, ST6 and ST7 were not detected in this study. ST3 infections were significantly predominant (P < 0.05) among symptomatic patients. CONCLUSIONS To our knowledge, this study provides the first run-through information on Blastocystis sp. epidemiology in Makkah city, revealing a rather moderate prevalence of 10.5% and the presence of three subtypes, ST1, ST2, and ST3. ST3 was the most predominant, particularly among symptomatic patients.
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Affiliation(s)
- Raafat T Mohamed
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia. .,Department of Medical Parasitology, Faculty of Medicine, El-Minia University, El-Minia, Egypt.
| | - Mohammed A El-Bali
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Anhar A Mohamed
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia.,Department of Medical Parasitology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mona A Abdel-Fatah
- Department of Medical Parasitology, Faculty of Medicine, Ain Shams University, Cairo, Egypt.,Microbiology Laboratory, King Abdellah Medical City, Makkah, Saudi Arabia
| | - Mohamed A El-Malky
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia.,Department of Medical Parasitology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Nawras M Mowafy
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia.,Department of Medical Parasitology, Faculty of Medicine, El-Minia University, El-Minia, Egypt
| | - Dina A Zaghlool
- Laboratory and Blood Bank Department, Al-Noor Specialist Hospital, Makkah, Saudi Arabia.,Department of Medical Parasitology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Rowaida A Bakri
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Saeed A Al-Harthi
- Department of Medical Parasitology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
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Afifi MA, El-Wakil HSI, Abdel-Ghaffar MM, Mohamed RT. Application of adult worm and lung-stage antigens to immunize against Schistosoma mansoni using cytokines as adjuvants. J Egypt Soc Parasitol 2006; 36:351-62, 2p following 362. [PMID: 16605124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Different Schistosoma mansoni antigens; adult worm antigen (SWAP) and lung-stage antigen (SLAP) together with different cytokine adjuvants (Interferon-gamma and Interleukin-4) were used to immunize mice against. S. mansoni. Immunization program was directed towards the production of an intense immune response together with balanced T-helper1 and T-helper2 immune responses. The goal of immunization was not only to protect from infection but also to modulate the pathology inflicted by the parasite. Parameters like adult load, egg counts, anti-Schistosoma antibody titers and liver pathology were used to evaluate the different immunization scheme. SLAP antigen has proven to be a better antigen not only in protection but also in pathology modulation. SLAP plus IFN-gamma as an adjuvant was the best immunization regimen with almost 50% protection and a remarkable resolving of parasite pathology. Unexpectedly, IL-4 had a weak but observed adjuvant protective effect. The results is a step in the path for a Schistosoma vaccine that guides the immune system towards a balanced response targeting the pathology induced by the parasite rather than the parasite itself.
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Affiliation(s)
- Mohammed A Afifi
- Department of Parasitology, Faculty of Medicine, Beni-Suef University, Egypt
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Hayashi N, Matsui K, Tsutsui H, Osada Y, Mohamed RT, Nakano H, Kashiwamura S, Hyodo Y, Takeda K, Akira S, Hada T, Higashino K, Kojima S, Nakanishi K. Kupffer cells from Schistosoma mansoni-infected mice participate in the prompt type 2 differentiation of hepatic T cells in response to worm antigens. J Immunol 1999; 163:6702-11. [PMID: 10586067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Infection with Schistosoma mansoni, a portal vein-residing helminth, is well known to generate life cycle-dependent, systemic immune responses in the host, type 1 deviation during the prepatent period, and type 2 polarization after oviposition. Here we investigated local immunological changes in the liver after infection. Unlike splenocytes, hepatic lymphocytes from infected mice during the prepatent period already produced a higher amount of IL-4 and a lesser amount of IFN-gamma than those from uninfected mice. Hepatic lymphocytes, particularly conventional T cells, but not NK1.1+ T cells, promptly produced IL-4 in response to worm products, soluble worm Ag preparation (SWAP), whenever presented by Kupffer cells from infected mice. The hepatic lymphocytes that had been stimulated with SWAP presented by infected mice-derived Kupffer cells produced a huge amount of IL-4, IL-13, and IL-5 as well as little IFN-gamma in response to immobilized anti-CD3 mAb. Kupffer cells from uninfected mice produced IL-6 and IL-10, but not IL-12 or IL-18, in response to SWAP stimulation and gained the potential to additionally produce IL-4 and IL-13 after the infection. These results suggested that prompt type 2 deviation in the liver after the infection might be due to the alteration of Kupffer cells that induces SWAP-mediated type 2-development of hepatic T cells.
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Affiliation(s)
- N Hayashi
- Third Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
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Hayashi N, Matsui K, Tsutsui H, Osada Y, Mohamed RT, Nakano H, Kashiwamura SI, Hyodo Y, Takeda K, Akira S, Hada T, Higashino K, Kojima S, Nakanishi3 K. Kupffer Cells from Schistosoma mansoni-Infected Mice Participate in the Prompt Type 2 Differentiation of Hepatic T Cells in Response to Worm Antigens. The Journal of Immunology 1999. [DOI: 10.4049/jimmunol.163.12.6702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
Infection with Schistosoma mansoni, a portal vein-residing helminth, is well known to generate life cycle-dependent, systemic immune responses in the host, type 1 deviation during the prepatent period, and type 2 polarization after oviposition. Here we investigated local immunological changes in the liver after infection. Unlike splenocytes, hepatic lymphocytes from infected mice during the prepatent period already produced a higher amount of IL-4 and a lesser amount of IFN-γ than those from uninfected mice. Hepatic lymphocytes, particularly conventional T cells, but not NK1.1+ T cells, promptly produced IL-4 in response to worm products, soluble worm Ag preparation (SWAP), whenever presented by Kupffer cells from infected mice. The hepatic lymphocytes that had been stimulated with SWAP presented by infected mice-derived Kupffer cells produced a huge amount of IL-4, IL-13, and IL-5 as well as little IFN-γ in response to immobilized anti-CD3 mAb. Kupffer cells from uninfected mice produced IL-6 and IL-10, but not IL-12 or IL-18, in response to SWAP stimulation and gained the potential to additionally produce IL-4 and IL-13 after the infection. These results suggested that prompt type 2 deviation in the liver after the infection might be due to the alteration of Kupffer cells that induces SWAP-mediated type 2-development of hepatic T cells.
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Affiliation(s)
| | | | - Hiroko Tsutsui
- †Department of Immunology and Medical Zoology, and
- ∥Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Tokyo, Japan
| | - Yoshio Osada
- ¶Department of Parasitology, Institute of Medical Science, University of Tokyo, Tokyo, Japan; and
| | - Raafat T. Mohamed
- ¶Department of Parasitology, Institute of Medical Science, University of Tokyo, Tokyo, Japan; and
| | | | - Shin-ichiro Kashiwamura
- ‡Laboratory of Host Defenses Institute for Advanced Medical Sciences, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | | | - Kiyoshi Takeda
- §Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
- ∥Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Tokyo, Japan
| | - Shizuo Akira
- §Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
- ∥Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Tokyo, Japan
| | | | - Kazuya Higashino
- *Third Department of Internal Medicine,
- ‡Laboratory of Host Defenses Institute for Advanced Medical Sciences, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Somei Kojima
- ¶Department of Parasitology, Institute of Medical Science, University of Tokyo, Tokyo, Japan; and
| | - Kenji Nakanishi3
- †Department of Immunology and Medical Zoology, and
- ‡Laboratory of Host Defenses Institute for Advanced Medical Sciences, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
- ∥Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Tokyo, Japan
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Hayashi N, Matsui K, Tsutsui H, Hyodo Y, Osada Y, Mohamed RT, Kojima S, Nakanishi K, Higashino K. Deleted type-I polarization in the liver of Schistosoma mansoni-infected mice. Parasitol Int 1998. [DOI: 10.1016/s1383-5769(98)80676-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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