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Salah F, Maher K, Demerdash Z, El Baz H, Abdallah HH, Maher S, El Khateeb EM, Shawky SM. Lab-scale production of anti-Schistosoma monoclonal antibodies by hybridoma culturing in serum free medium: Enhancement of growth, cryopreservation survival rate, and diagnostic accuracy. Exp Parasitol 2022; 242:108390. [PMID: 36179853 DOI: 10.1016/j.exppara.2022.108390] [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: 03/16/2022] [Revised: 09/18/2022] [Accepted: 09/23/2022] [Indexed: 11/15/2022]
Abstract
This study was performed to evaluate the effect of two commercially available serum-free culture media; serum free medium (SFM) and chemically defined medium (CDM), on the growth rate, antibody productivity and post adaptation cryopreservation and revival reactivity of hybridoma cells compared to the conventional serum based medium (SBM). In addition, the diagnostic efficacy of MAbs secreted in each culture medium was evaluated by testing their performance in sandwich ELISA for antigen detection. Anti- Schistosoma mansoni soluble egg antigen hybridoma cell line (7A/8F) secreting previously characterized IgG Kappa mAbs, were retrieved and propagated in each of the three aforementioned media. Growth rate and viability were assessed post culturing in each media. The data collected from this study indicated that MAbs secreted from hybridoma cells cultured in SFM were the most abundant, easiest to purify, and the most effective in antigen detection by sandwich ELISA, in comparison to those produced in the other two media. Moreover, combination of fresh and conditioned medium with DMSO 7.5% was the most promising formulation for the cryopreservation of hybridoma cells cultivated in serum independent media (SFM or CDM).
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Affiliation(s)
- Faten Salah
- Immunology Department, Theodor Bilharz Research Institute, Egypt
| | - Kesmat Maher
- Immunology Department, Theodor Bilharz Research Institute, Egypt
| | - Zeinab Demerdash
- Immunology Department, Theodor Bilharz Research Institute, Egypt
| | - Hanan El Baz
- Immunology Department, Theodor Bilharz Research Institute, Egypt
| | | | - Sara Maher
- Immunology Department, Theodor Bilharz Research Institute, Egypt.
| | - Engy M El Khateeb
- Clinical& Chemical Pathology, Faculty of Medicine, Cairo University, Egypt
| | - Shereen M Shawky
- Clinical& Chemical Pathology, Faculty of Medicine, Cairo University, Egypt
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Worasith C, Wangboon C, Kopolrat KY, Homwong C, Sithithaworn J, Techasen A, Thanan R, Khuntikeo N, Sithithaworn P. Application of urine antigen assay to evaluate outcomes of praziquantel treatment and reinfection in opisthorchiasis in northeast Thailand. Trans R Soc Trop Med Hyg 2020; 114:751-761. [DOI: 10.1093/trstmh/traa057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/25/2020] [Accepted: 07/02/2020] [Indexed: 12/30/2022] Open
Abstract
Background
A urine antigen assay was applied to evaluate chemotherapeutic outcomes and reinfection patterns of opisthorchiasis in Thailand.
Methods
We used a prospective study design by following opisthorchiasis subjects at baseline and post-treatment using a urine antigen assay and faecal examination by the formalin–ethyl acetate concentration technique (FECT).
Results
The antigen of Opisthorchis viverrini in urine diminished within 4 weeks after praziquantel treatment. Concurrent faecal examinations by FECT showed that faecal eggs were negative at 4 weeks after treatment. In a subsequent study, reinfection rates and intensity patterns of O. viverrini were evaluated at 48 weeks after praziquantel treatment. Within a group of subjects with curative treatment (n=137), 16.8% became reinfected according to FECT and 27.7% according to the urine antigen assay (p<0.05). There were significant correlations in intensity of infection between pretreatment and at 48 weeks post-treatment in both faecal egg counts and antigen levels in urine.
Conclusions
The results suggested that in addition to screening, the urine antigen assay is an efficient tool for monitoring outcomes of drug treatment and reinfection in opisthorchiasis. Due to the ease of urine sample collection and handling, the urine assay becomes an alternative method to faecal examination for diagnosis and monitoring of opisthorchiasis.
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Affiliation(s)
- Chanika Worasith
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Chompunoot Wangboon
- School of Preclinical Science, Institute of Science, Suranaree University of Technology, Nakhon Rachasima 30000, Thailand
| | - Kulthida Y Kopolrat
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Chutima Homwong
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | | | - Anchalee Techasen
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Raynoo Thanan
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Narong Khuntikeo
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Paiboon Sithithaworn
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
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Mahmoud FS, Demerdash ZA, Elmotawakel SM, Hassan S, Hendawy M, Atta SA, Shawky SM, Alkhateeb EM, Hassanin HI. Serum low replacement medium versus serum rich replacement medium for production of Anti-Schistosoma Monoclonal antibody: A comparative study. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2020. [DOI: 10.1016/j.cegh.2019.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Lee Y, Song HB, Jung BK, Choe G, Choi MH. Case Report of Urinary Schistosomiasis in a Returned Traveler in Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2020; 58:51-55. [PMID: 32145727 PMCID: PMC7066443 DOI: 10.3347/kjp.2020.58.1.51] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 12/04/2019] [Indexed: 12/12/2022]
Abstract
A 23-year-old Korean woman with a residence history in Kenya and Malawi for about 2 years presented with gross hematuria for 1 month. Blood tests were within normal range except eosinophilia. Asymmetrically diffuse wall thickening and calcification were observed at the urinary bladder on CT. Multiple erythematous nodular lesions were observed in the cystoscopy and transurethral resection was done. Numerous eggs of Schistosoma haematobium with granulomatous inflammation were observed in the submucosal layer of the bladder. The patient was diagnosed with schistosomiasis-related cystitis and treated with praziquantel (40 mg/kg/day) twice before and after transurethral resection. This case suggests that S. haematobium infection should be considered as a cause of hematuria in Korea when the patient had a history of traveling endemic areas of schistosomiasis.
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Affiliation(s)
- Yangkyu Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Korea
| | - Hyun Beom Song
- Department of Tropical Medicine and Parasitology and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Bong-Kwang Jung
- Department of Tropical Medicine and Parasitology and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul 03080, Korea.,Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Gheeyoung Choe
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Korea
| | - Min-Ho Choi
- Department of Tropical Medicine and Parasitology and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul 03080, Korea
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Comparative analysis of the diagnostic performance of adult, cercarial and egg antigens assessed by ELISA, in the diagnosis of chronic human Schistosoma mansoni infection. Parasitol Res 2014; 113:3467-76. [DOI: 10.1007/s00436-014-4017-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Accepted: 06/30/2014] [Indexed: 11/25/2022]
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Wishahi M, Zakarya A, Hamamm O, Abdel-Rasol M, Badawy H, Elganzoury H, Ismail M, Elkhouly A, Meheina A. Impact of density of schistosomal antigen expression in urinary bladder tissue on the stratification, cell type, and staging, and prognosis of carcinoma of the bladder in Egyptian patients. Infect Agent Cancer 2014; 9:21. [PMID: 25018779 PMCID: PMC4094454 DOI: 10.1186/1750-9378-9-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 06/10/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Infection with urinary schistosomiasis and its severity are oncogenic factors for developing carcinoma of the bladder, whether it is urothelial carcinoma (UC) of a transitional cell type (TCC) or non-urothelial of squamous cell carcinoma (SCC). In UC it is not defined whether it is schistosomal or not. This led to controversial results in expression of tumour markers, tumour prognosis, and response to therapy. OBJECTIVES We assessed the application by immunohistochemistry method (IHC) for detection of schistosomal antigen in bladder cancer tissue samples to differentiate UC associated with or without schistosomiasis. Urothelial carcinoma stage, grade, and progression were correlated with the density, intensity, and index of schistosomal antigen expression. Follow up was done for 2-5 years. DESIGN AND PARTICIPANTS Archival tissue samples of 575 patients were studied: 515 urothelial carcinoma, 30 patients with SCC associated with schistosomiasis, and a control group of 30 patients without schistosomiasis. MEASUREMENTS Expression of schistosomal antigen in tissue was done by IHC using monoclonal antibodies (MAbs) against schistosomal antigens (SA). Correlation of intensity of antigen expression to clinical and pathological data was analysed. RESULTS AND LIMITATIONS We identified 3 parameters of antigen expression: density, intensity and index with 4 grades for each. SCC-group was 100% positive. UC was positive in 61.4% distributed as follows: Ta: 37.5%, T1: 62%, and muscle invasive T2-4 were 64%. Upstaging, metastases and recurrence were correlated with high index in T1 and T2-4 tumours. CONCLUSION Urothelial carcinoma associated with schistosomiasis was defined by the positive expression of schistosomal antigens in tissues detected by lHC using MAbs against schistosomal haematobium. Upstaging and progression of T1 and T2-4 were correlated with high density, intensity, and index of antigen expression. Non-schistosomal UC had negative expression for schistosomal antigen, which was detected in 36.5% of cases. These results would be of significance in differentiating schistosomal from non-schistosomal bladder cancer of UC and would predict the prognosis in T1, T2-3 tumours. Implementation of IHC using MAbs against SA in UC would help in planning the proper therapy. Schistosomiasis should be considered as an oncogene for UC in endemic areas.
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Affiliation(s)
- Mohamed Wishahi
- Department of Urology, Theodor Bilharz Research Institute, Kornish El Nil, 12343, Embaba/Giza, P.O.B. 30, Cairo, Egypt
| | - Ahmed Zakarya
- Department of Urology, Theodor Bilharz Research Institute, Kornish El Nil, 12343, Embaba/Giza, P.O.B. 30, Cairo, Egypt
| | - Olfat Hamamm
- Department of Pathology, Theodor Bilharz Research Institute, Cairo, Egypt
| | | | - Hisham Badawy
- Department of Urology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Hossam Elganzoury
- Department of Urology, Theodor Bilharz Research Institute, Kornish El Nil, 12343, Embaba/Giza, P.O.B. 30, Cairo, Egypt
| | - Mohamed Ismail
- Department of Urology, Theodor Bilharz Research Institute, Kornish El Nil, 12343, Embaba/Giza, P.O.B. 30, Cairo, Egypt
| | - Amr Elkhouly
- Department of Urology, Theodor Bilharz Research Institute, Kornish El Nil, 12343, Embaba/Giza, P.O.B. 30, Cairo, Egypt
| | - Ahmed Meheina
- Department of Urology, Theodor Bilharz Research Institute, Kornish El Nil, 12343, Embaba/Giza, P.O.B. 30, Cairo, Egypt
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Martínez-Calle N, Pascual I, Rubio M, Carias R, Del Pozo JL, Yuste JR. Asymptomatic Schistosoma haematobium infection in a traveler with negative urine microscopy and late seroconversion presumably linked to artemisinin. J Travel Med 2013; 20:326-8. [PMID: 23992576 DOI: 10.1111/jtm.12043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 03/26/2013] [Accepted: 04/02/2013] [Indexed: 11/26/2022]
Abstract
We describe a Schistosoma haematobium infection with asymptomatic eosinophilia, persistently negative urine microscopy, and late seroconversion (7.5 months) in a traveler returning from Mali. After initial negative parasitological tests, travel history led to diagnostic cystoscopy, allowing final diagnosis with urine microscopy after the bladder biopsy. The patient was successfully treated with praziquantel. Difficulties in making the diagnosis of schistosomiasis in asymptomatic returning travelers are discussed; we propose a trial treatment in these cases.
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Demerdash Z, Mohamed S, Hendawy M, Rabia I, Attia M, Shaker Z, Diab TM. Monoclonal antibody-based dipstick assay: a reliable field applicable technique for diagnosis of Schistosoma mansoni infection using human serum and urine samples. THE KOREAN JOURNAL OF PARASITOLOGY 2013; 51:93-8. [PMID: 23467705 PMCID: PMC3587756 DOI: 10.3347/kjp.2013.51.1.93] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 09/06/2012] [Accepted: 09/07/2012] [Indexed: 11/23/2022]
Abstract
A field applicable diagnostic technique, the dipstick assay, was evaluated for its sensitivity and specificity in diagnosing human Schistosoma mansoni infection. A monoclonal antibody (mAb) against S. mansoni adult worm tegumental antigen (AWTA) was employed in dipstick and sandwich ELISA for detection of circulating schistosome antigen (CSA) in both serum and urine samples. Based on clinical and parasitological examinations, 60 S. mansoni-infected patients, 30 patients infected with parasites other than schistosomiasis, and 30 uninfected healthy individuals were selected. The sensitivity and specificity of dipstick assay in urine samples were 86.7% and 90.0%, respectively, compared to 90.0% sensitivity and 91.7% specificity of sandwich ELISA. In serum samples, the sensitivity and specificity were 88.3% and 91.7% for dipstick assay vs. 91.7% and 95.0% for sandwich ELISA, respectively. The diagnostic efficacy of dipstick assay in urine and serum samples was 88.3% and 90.0%, while it was 90.8% and 93.3% for sandwich ELISA, respectively. The diagnostic indices of dipstick assay and ELISA either in serum or in urine were statistically comparable (P>0.05). In conclusion, the dipstick assay offers an alternative simple, rapid, non-invasive technique in detecting CSA or complement to stool examinations especially in field studies.
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Affiliation(s)
- Zeinab Demerdash
- Immunology Department, Theodor Bilharz Research Institute, 12411 Giza, Egypt
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