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Arbune M, Padurariu-Covit MD, Tiutiuca C, Mihailov R, Niculet E, Arbune AA, Tatu AL. Unusual Localization of AIDS-Related Kaposi's Sarcoma in a Heterosexual Male during the COVID-19 Pandemic: A Case Report. Trop Med Infect Dis 2024; 9:47. [PMID: 38393136 PMCID: PMC10892696 DOI: 10.3390/tropicalmed9020047] [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: 01/29/2024] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Kaposi's sarcoma is an AIDS-defining illness and remains the most frequent tumor arising in HIV-infected patients with multifactorial etiology. We present a case of a 30-year-old Caucasian male with an 18-year history of HIV infection. The patient was presented with a one-week history of fever, non-productive cough, and skin lesions. There was an associated weakness and weight loss in a duration of 6 months. Clinical examination showed fever, generalized lymphadenopathy, lower limb edema, ascites, and violaceous cutaneous eruption comprising patches, plaques, and nodules. He also had a red nodule on the left conjunctiva, as well as on his oral mucosa. His CD4+ count was below 10/mm3 and ARN-HIV viral load was above 100,000 c/mL, in relation to the antiretroviral failure after five drug regimens. The role of co-infections in oncogenesis and the course of Kaposi's sarcoma were considered in recent studies. Delayed diagnosis of Kaposi's sarcoma in the present case resulted in a negative impact for this patient during the COVID-19 pandemic.
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Affiliation(s)
- Manuela Arbune
- Medical Clinic Department, Dunarea de Jos University, 800008 Galati, Romania; (M.A.); (A.-L.T.)
- Clinical Hospital for Infectious Diseases, 800179 Galati, Romania
| | - Monica-Daniela Padurariu-Covit
- Doctoral School of Biomedical Sciences, Dunarea de Jos University, 800008 Galati, Romania
- Hematology Department, Sf. Apostol Andrei Emergency County Hospital, 800578 Galati, Romania
| | - Carmen Tiutiuca
- Surgery Clinic Department, Dunarea de Jos University, 800578 Galati, Romania; (C.T.); (R.M.)
- Ophthalmology Department, Sf. Apostol Andrei Emergency County Hospital, 800008 Galati, Romania
| | - Raul Mihailov
- Surgery Clinic Department, Dunarea de Jos University, 800578 Galati, Romania; (C.T.); (R.M.)
- General Surgery Department, Sf. Apostol Andrei Emergency County Hospital, 800578 Galati, Romania
| | - Elena Niculet
- Morphological and Functional Sciences Department, Dunarea de Jos University, 800008 Galati, Romania;
- Pathology Department, Sf. Apostol Andrei Emergency County Hospital, 800578 Galati, Romania
- Multidisciplinary Integrated Center for Dermatological Interface Research, 800010 Galati, Romania;
| | - Anca-Adriana Arbune
- Multidisciplinary Integrated Center for Dermatological Interface Research, 800010 Galati, Romania;
- Neurology Department, Fundeni Clinical Institute, 077086 Bucharest, Romania
| | - Alin-Laurentiu Tatu
- Medical Clinic Department, Dunarea de Jos University, 800008 Galati, Romania; (M.A.); (A.-L.T.)
- Clinical Hospital for Infectious Diseases, 800179 Galati, Romania
- Multidisciplinary Integrated Center for Dermatological Interface Research, 800010 Galati, Romania;
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de Morais VMS, Gonçales JP, Cahú GGDOM, Tozetto-Mendoza TR, Coêlho MRCD. Mannose-binding lectin concentrations in people living with HIV/AIDS infected by HHV-8. BMC Immunol 2019; 20:1. [PMID: 30606111 PMCID: PMC6318849 DOI: 10.1186/s12865-018-0284-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/18/2018] [Indexed: 12/17/2022] Open
Abstract
Background Mannose-binding lectin (MBL) plays an important role in the innate immune response by activating the complement system via the lectin pathway, and it has been studied in several viral infections; however, the influence of MBL in PLWHA infected with HHV-8 is unknown. The objective of this study was to verify the association of MBL deficient plasma concentrations in HIV/HHV-8 coinfected and HIV monoinfected patients and to correlate these concentrations with HIV viral load and CD4 counts in both groups. Results This was an analytical study of case-controls consisting of PLWHA monitored at the medical outpatient of Infectious and Parasitic Diseases of the clinical hospital in the Federal University of Pernambuco. Plasma concentrations of MBL were obtained by an enzyme-linked immunosorbent assay (ELISA) using a commercial Human Mannose Binding Lectin kit (MyBioSource, Inc.) that was performed according to the manufacturer’s guidelines, with values < 100 ng/ml considered deficient. A total of 245 PLWHA samples were analysed; 118 were HIV/HHV-8 coinfected and 127 were HIV monoinfected; 5.1% (6/118) of the coinfected patients and 3.2% (4/127) of the monoinfected patients (p = 0.445) were considered plasma concentration deficient. The median of the plasma concentrations of MBL in the coinfected patients was 2803 log10 ng/ml and was 2.959 log10 ng/ml in the monoinfected patients (p = 0.001). There was an inverse correlation between the plasma concentrations of MBL and the HIV viral load in both groups, but no correlation with the CD4 count. Conclusions Although the plasma concentrations considered deficient in MBL were not associated with HHV-8 infection in PLWHA, the coinfected patients showed lower MBL concentrations and an inverse correlation with HIV viral load, suggesting that there may be consumption and reduction of MBL due to opsonization of HIV and HHV-8, leading to the reduction of plasma MBL and non-accumulation in the circulation.
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Affiliation(s)
- Viviane Martha Santos de Morais
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Juliana Prado Gonçales
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Tania Regina Tozetto-Mendoza
- Laboratory of Virology (LIM52), Institute of Tropical Medicine of São Paulo, University of São Paulo, São Paulo, Brazil
| | - Maria Rosângela Cunha Duarte Coêlho
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Recife, Pernambuco, Brazil. .,Departament of Physiology and Pharmacology, Center of Biological Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil. .,Setor de Virologia do Laboratório de Imunopatologia Keizo Asami, Universidade Federal de Pernambuco, Cidade Universitária, P.O. Box: Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901, Brazil.
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de Morais VMS, de Lima ELS, Cahú GGDOM, Lopes TRR, Gonçales JP, Muniz MTC, Coêlho MRCD. MBL2 gene polymorphisms in HHV-8 infection in people living with HIV/AIDS. Retrovirology 2018; 15:75. [PMID: 30482213 PMCID: PMC6260567 DOI: 10.1186/s12977-018-0456-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 11/16/2018] [Indexed: 02/01/2023] Open
Abstract
Background Host genetic factors such as MBL2 gene polymorphisms cause defects in the polymerization of MBL protein and result in a functional deficiency and/or in low serum levels that can influence susceptibility to various viral infections. The aim of this study was to estimate the frequency of alleles, genotypes and haplotypes related to -550, -221 and exon 1 polymorphisms of the MBL2 gene and investigate their association with HHV-8 in people living with HIV/AIDS (PLWHA), as well as the impacts on CD4 cell count and HIV viral load in HIV/HHV-8 coinfected and HIV monoinfected patients. Results A cross sectional study in PLWHA, with and without HHV-8 infection, exploring associations between different factors, was performed in the outpatient infectious and parasitic diseases clinic at a referral hospital. Genomic DNA extractions from leukocytes were performed using a commercial Wizard®Genomic DNA Purification kit (Promega, Madison, WI). The promoter region (-550 and -221) was genotyped with the TaqMan system (Applied TaqMan Biosystems® genotyping Assays), and the structural region (exon1) was genotyped with Express Sybr Greener Supermix kit (Invitrogen, USA). In total, 124 HIV/HHV-8 coinfected and 213 HIV monoinfected patients were analysed. Median TCD4 counts were significantly lower in HIV/HHV-8 coinfected patients, whereas the mean of the first and last viral load of HIV did not present significant difference. There was no difference in frequency between the LL, YY and AA genotypes between the HIV/HHV-8 coinfected or HIV monoinfected patients. However, in a multivariate analysis, coinfected patients with the intermediate expression haplotype of the MBL2 gene had an odds ratio of 3.1-fold (CI = 1.2–7.6) of their last CD4 cell count being below 350 cells/mm3. Among the coinfected individuals, four developed KS and presented the intermediate expression MBL haplotype, with three being HYA/LXA and one being LYA/LYO. Conclusions Host genetic factors, such as -550, -221 and exon 1 polymorphisms, can be related to the may modify coinfections and/or to the development clinical manifestations caused by HHV-8, especially in HIV/HHV-8 coinfected patients who present the intermediate expression haplotypes of MBL.
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Affiliation(s)
- Viviane Martha Santos de Morais
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Elker Lene Santos de Lima
- Laboratory of Molecular Biology, Center of Pediatric Oncohematology, Oswaldo Cruz University Hospital, University of Pernambuco, Recife, PE, Brazil
| | - Georgea Gertrudes de Oliveira Mendes Cahú
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Thaisa Regina Rocha Lopes
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Juliana Prado Gonçales
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Maria Tereza Cartaxo Muniz
- Laboratory of Molecular Biology, Center of Pediatric Oncohematology, Oswaldo Cruz University Hospital, University of Pernambuco, Recife, PE, Brazil
| | - Maria Rosângela Cunha Duarte Coêlho
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil. .,Departament of Physiology and Pharmacology, Center of Biological Sciences, Federal University of Pernambuco, Recife, PE, Brazil.
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Maestri CA, Nisihara R, Ramos GP, Weinschutz Mendes H, Messias-Reason I, de Carvalho NS. Mannose-Binding Lectin Does Not Act as a Biomarker for the Progression of Preinvasive Lesions of Invasive Cervical Cancer. Med Princ Pract 2017; 26:530-534. [PMID: 29131134 PMCID: PMC5848474 DOI: 10.1159/000485037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 11/07/2017] [Indexed: 01/29/2023] Open
Abstract
OBJECTIVE To evaluate serum concentrations of mannose-binding lectin (MBL) in women presenting with different human papillomavirus (HPV)-associated cervical lesions. SUBJECTS AND METHODS A total of 364 women, who underwent screening for cervical cancer or treatment at the Erasto Gaertner Cancer Hospital (HEG), Curitiba, Brazil, were enrolled in the study. Based on the latest cervical colposcopy-guided biopsy results, the women were divided into 4 groups: cervical intraepithelial neoplasia CIN-I (n = 54), CIN-II (n = 72), CIN-III (n = 145), and invasive cancer (n = 93). A time-resolved immunofluorometric assay was used to measure the MBL concentrations in serum. The statistical analysis was done using GraphPad Prism 6.0. Comparisons were performed by Kruskal-Wallis and Mann-Whitney tests and analyzed by χ2 test; continuous variables are presented as medians and categorical variables as frequencies. RESULTS The median MBL concentrations in decreasing order were as follows: invasive cancer: 1,452 ng/mL, CIN-I: 1,324 ng/mL, CIN-II: 1,104 ng/mL, and CIN-III 1,098 ng/mL. However, no statistical significance was found among the 4 groups with HPV-associated lesions (p = 0.11). Equally, the MBL levels did not show a significant association between the age of the patients and the severity of the cervical lesions (p = 0.68). No statistical significance was found in the median values of MBL or in the status of MBL deficient (<100 ng/mL) and high producers (>1,000 ng/mL) among the women in each group (p = 0.77). CONCLUSION In this study, there was no statistically significant difference in MBL serum levels among the groups with CIN. Hence MBL serum concentration appeared not to have influenced the progression of HPV-related preinvasive cervical lesions into invasive cancer.
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Affiliation(s)
- Carlos Afonso Maestri
- Liga Paranaense de Combate ao Câncer, Erasto Gaertner Hospital, Federal University of Parana, Curitiba, Brazil
| | - Renato Nisihara
- Immunopathology Laboratory, Clinical Hospital, Federal University of Parana, Curitiba, Brazil
- *Dr. Renato Nisihara, Immunopathology Laboratory, Clinical Hospital, Federal University of Parana, R. Prof. Pedro Viriato Parigot de Souza, 5300, Curitiba, PR 81280-330 (Brazil), E-Mail
| | - Guilherme P. Ramos
- Department of Gynecology, Clinical Hospital, Federal University of Parana, Curitiba, Brazil
| | | | - Iara Messias-Reason
- Immunopathology Laboratory, Clinical Hospital, Federal University of Parana, Curitiba, Brazil
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Association of MBL2 exon1 polymorphisms with high-risk human papillomavirus infection and cervical cancers: a meta-analysis. Arch Gynecol Obstet 2016; 294:1109-1116. [PMID: 27619685 DOI: 10.1007/s00404-016-4201-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE High-risk human papillomavirus (HR-HPV) infection is the main known cause of cervical cancer. Mannose-binding lectin (MBL) is a recognition molecule that mediates phagocytosis and activates complement. METHODS We performed a meta-analysis to investigate the association of MBL-2 functional polymorphisms with HPV infection and cervical cancer (CC). RESULTS The meta-analyses indicated an association between the MBL2 exon 1 polymorphisms and susceptibility to HPV infection in the recessive model (OO vs. AA + AO, p = 0.042, 95 % CI 1.02-3.15), and O/O vs. A/A mode (P = 0.023, 95 % CI 1.10-3.40) in Caucasian. Meanwhile, there was a significant association between MBL2 exon 1 polymorphisms and cervical cancer risk in AO vs. AA model (p = 0.035, 95 % CI 1.03-2.26), and Allelic model (O vs. A, p = 0.022, 95 % CI 1.05-1.96) as compared to HR-HPV-infected patients with CC vs. healthy controls in Caucasian. In addition, no an association was observed between MBL2 -550 H/L and -221 X/Y polymorphisms and HPV infection among Caucasians, but we found an association between the MBL2 -550 H/L polymorphism and susceptibility to HR-HPV infection in recessive model (HH vs. LL + LH, p = 0.003, 95 % CI 1.18-2.23), HH vs. LL model (p = 0.021, 95 % CI 1.07-2.19), and allelic model(H vs. L, p = 0.042, 95 % CI 1.01-1.40) in Asians. CONCLUSIONS Collectively, we suggest that the MBL2 gene exon1 polymorphisms are associated with increased risk of high-risk HPV infection and cervical cancer development among Caucasians. Additionally, no significant association was found between the MBL2 -550 H/L or -221 X/Y polymorphisms and HPV infection in Caucasians, but there may be potential links in Asians.
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Zupin L, Polesello V, Casalicchio G, Freato N, Maestri I, Comar M, Crovella S, Segat L. MBL2 polymorphisms in women with atypical squamous cells of undetermined significance. J Med Virol 2015; 87:851-9. [PMID: 25693844 DOI: 10.1002/jmv.24080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/19/2014] [Indexed: 01/02/2023]
Abstract
Infection with high risk Human papillomavirus (HPV) is the main known cause of cervical cancer. HPV induces different grades of lesions: among them, Atypical squamous cells of undetermined significance are abnormal lesions that could evolve in pre-cancer lesions or spontaneously regress. The mannose binding lectin (MBL) is an innate immunity serum protein also found in cervico-vaginal mucosa, whose expression is known to be affected by polymorphisms in exon 1 and promoter of the MBL2 gene. In the present study the possible association between MBL2 functional polymorphisms and susceptibility to develop atypical squamous cells of undetermined significance was investigated in a group of women from North-East of Italy, stratified for HPV infection status. The MBL2 D and O alleles and the deficient producer combined genotypes, responsible for low MBL production, were more represented among atypical squamous cells of undetermined significance positive women than healthy controls and the results were confirmed when only HPV negative samples were considered. These results suggest a possible involvement of MBL2 functional polymorphisms in atypical squamous cells of undetermined significance susceptibility.
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Affiliation(s)
- Luisa Zupin
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
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Wang ZY, Sun ZR, Zhang LM. The relationship between serum mannose-binding lectin levels and acute ischemic stroke risk. Neurochem Res 2013; 39:248-53. [PMID: 24309995 DOI: 10.1007/s11064-013-1214-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/05/2013] [Accepted: 11/27/2013] [Indexed: 01/04/2023]
Abstract
Complement activation and inflammation have been suggested in the pathogenesis of stroke, mannose-binding lectin (MBL) were found to have roles during the process. The aim of this study was to investigate the relationship between acute ischemic stroke (AIS) and serum MBL levels in Chinese population. From January 1 to June 30 2013, all patients with first-ever AIS were recruited to participate in the study. Serum MBL levels and routine test were examined. The National Institutes of Health Stroke Scale (NIHSS) score was assessed on admission blinded to MBL levels. During the inclusion period, 148 patients with AIS were registered and completed study. The results indicated that the serum MBL levels were significantly (p < 0.0001) higher in acutely ischemic stroke patients as compared to normal controls [1,332; interquartile range (IQR) 996-2,134 μg/L and 897; IQR 678-1,100 μg/L, respectively]. There was a correlation between serum levels of MBL and NIHSS score [r (spearman) = 0.608, p < 0.0001). In multivariate analysis, serum MBL as a continuous variable was associated with an increased risk of AIS, after adjustment for above possible confounders (OR 1.002, 95 % CI 1.001-1.008; p < 0.0001). These results indicated that elevated MBL levels could be considered as an independent stroke risk factor in Chinese population, suggesting a role of MBL and the lectin pathway of complement activation in the pathogenesis of stroke.
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Affiliation(s)
- Zhen-Yu Wang
- The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
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Michaud DS, Siddiq A, Cox DG, Backes DM, Calboli FCF, Sughrue ME, Gaziano JM, Ma J, Stampfer M, Tworoger SS, Hunter DJ, Camargo CA, Parsa AT. Mannose-binding lectin 2 gene and risk of adult glioma. PLoS One 2013; 8:e61117. [PMID: 23637788 PMCID: PMC3630225 DOI: 10.1371/journal.pone.0061117] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 03/06/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND AIMS The immune system is likely to play a key role in the etiology of gliomas. Genetic polymorphisms in the mannose-binding lectin gene, a key activator in the lectin complement pathway, have been associated with risk of several cancers. METHODS To examine the role of the lectin complement pathway, we combined data from prospectively collected cohorts with available DNA specimens. Using a nested case-control design, we genotyped 85 single nucleotide polymorphisms (SNPs) in 9 genes in the lectin complement pathway and 3 additional SNPs in MBL2 were tested post hoc). Initial SNPs were selected using tagging SNPs for haplotypes; the second group of SNPs for MBL2 was selected based on functional SNPs related to phenotype. Associations were examined using logistic regression analysis. All statistical tests were two-sided. Nominal p-values are presented and are not corrected for multiple comparisons. RESULTS A total of 143 glioma cases and 419 controls were available for this analysis. Statistically significant associations were observed for two SNPs in the mannose-binding lectin 2 (ML2) gene and risk of glioma (rs1982266 and rs1800450, test for trend p = 0.003 and p = 0.04, respectively, using the additive model). One of these SNPs, rs1800450, was associated with a 58% increase in glioma risk among those carrying one or two mutated alleles (odds ratio = 1.58, 95% confidence interval = 0.99-2.54), compared to those homozygous for the wild type allele. CONCLUSIONS Overall, our findings suggest that MBL may play a role in the etiology of glioma. Future studies are needed to confirm these findings which may be due to chance, and if reproduced, to determine mechanisms that link glioma pathogenesis with the MBL complement pathway.
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Affiliation(s)
- Dominique S Michaud
- Department of Epidemiology, Brown Public Health, Brown University, Providence, Rhode Island, USA.
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Swierzko AS, Kilpatrick DC, Cedzynski M. Mannan-binding lectin in malignancy. Mol Immunol 2012; 55:16-21. [PMID: 23062612 DOI: 10.1016/j.molimm.2012.09.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 09/12/2012] [Accepted: 09/19/2012] [Indexed: 12/28/2022]
Abstract
Complement may play a dual role in cancer: it may contribute either to the development or to the inhibition of tumour growth. Its components may be candidate biomarkers facilitating the disease detection, its progress or effectiveness of therapy. Additionally, complement deficiencies may increase the risk of infections and contribute to the higher mortality, especially in patients undergoing aggressive chemotherapy. In this paper, possible cancer associations of one of the factors activating complement via the lectin pathway, mannan-binding lectin (MBL), are discussed.
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Affiliation(s)
- Anna S Swierzko
- Laboratory of Immunobiology of Infections, Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
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MBL serum concentration in women with HPV presenting CIN III lesions. Hum Immunol 2012; 74:67-9. [PMID: 23017671 DOI: 10.1016/j.humimm.2012.09.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 08/13/2012] [Accepted: 09/10/2012] [Indexed: 11/22/2022]
Abstract
PURPOSE This study proposes to assess MBL serum concentrations in HPV positive women that developed high risk preinvasive lesions, CIN III. MATERIALS AND METHODS A total of 90 consecutive women (mean age 32.2 years, range 18-45 years) with CIN III lesions confirmed by cone biopsy were enrolled as cases at the gynecology cancer department of the Erasto Gaertner Hospital, a center of reference for cancer treatment in Southern Brazil. All the patients were HPV positive. In addition, 81 healthy women, voluntary blood donors, were enrolled as healthy control subjects (mean age 33.3 years, range 14-71 years) with no evidence of HPV infection, tested by hybrid capture, or CIN lesions, from the same geographic area. RESULTS The median concentration of MBL in the cases was 912 ng/ml (IQR: 100-5820 ng/ml) and in the controls was 1207.3 ng/ml (IQR 100-4320.6 ng/ml). No statistically significant difference was observed between cases and controls. CONCLUSION This study reports data on MBL serum concentrations in HPV infected women for the first time. The analysis of our findings did not show a statistically significant difference between MBL serum concentrations in HPV women that developed CIN III lesions and healthy controls.
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Liman P, Babel N, Schachtner T, Unterwalder N, König J, Hofmann J, Reinke P, Nickel P. Mannose-binding lectin deficiency is not associated with increased risk for polyomavirus nephropathy. Transpl Immunol 2012; 26:123-7. [DOI: 10.1016/j.trim.2011.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 12/06/2011] [Accepted: 12/07/2011] [Indexed: 11/30/2022]
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The Amerindian mtDNA haplogroup B2 enhances the risk of HPV for cervical cancer: de-regulation of mitochondrial genes may be involved. J Hum Genet 2012; 57:269-76. [DOI: 10.1038/jhg.2012.17] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Villaseñor-Cardoso MI, Ortega E. Polymorphisms of innate immunity receptors in infection by parasites. Parasite Immunol 2012; 33:643-53. [PMID: 21851363 DOI: 10.1111/j.1365-3024.2011.01327.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The innate immune system is the first line of defence against infection by pathogenic bacteria, virus and parasites and is also responsible for initiating an adaptive immune response. In contrast to the receptors of adaptive immunity (TCRs and antibodies) which are generated by gene recombination, receptors of the innate immune system are encoded in the germline and are thus inherited from generation to generation. Although evolutionarily selected, the genes encoding the innate recognition receptors show variations among individuals, and these polymorphisms may have an impact on the ability of an individual to deal with an infection. In recent years, several polymorphisms have been identified in innate recognition receptors, and efforts are being made to determine whether these polymorphisms are associated with a higher or lower susceptibility to infectious diseases. These studies will allow a better understanding of the role of innate receptors in specific diseases and are valuable in the design of preventive or therapeutic interventions to fight the disease. In this review, we summarize studies aimed at determining the influence of polymorphisms in innate recognition receptors on the susceptibility to diseases caused by parasites.
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Affiliation(s)
- M I Villaseñor-Cardoso
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, México City, DF, Mexico
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The significance of mannose-binding lectin gene polymorphisms on the risk of BK virus coinfection in women with human papillomavirus–positive cervical lesions. Hum Immunol 2011; 72:663-6. [DOI: 10.1016/j.humimm.2011.04.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 03/19/2011] [Accepted: 04/08/2011] [Indexed: 11/16/2022]
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de Melo FM, Vasconcelos LRS, do Carmo RF, Silva BS, Moura P, Cavalcanti MDD, Pereira LMMB, Lacerda HR. MBL2 polymorphism and autoimmune markers: reconsidering the complexity of biological systems in the choice of controls. Int J Immunogenet 2011. [DOI: 10.1111/j.1744-313x.2010.00982.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sheng A, Lan J, Wu H, Lu J, Wang Y, Chu Q, Jia Z, Song M, Liu L, Wang W. A clinical case-control study on the association between mannose-binding lectin and susceptibility to HIV-1 infection among northern Han Chinese population. Int J Immunogenet 2011; 37:445-54. [PMID: 20618520 DOI: 10.1111/j.1744-313x.2010.00946.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mannose-binding lectin (MBL) is a key molecule of the innate immune system and a competent to bind carbohydrates of a variety of microorganisms, resulting in complement activation and opsonophagocytosis against various pathogens. However, there is no systemic investigation on the MBL's role in innate immune responses against HIV-1 infection among northern Han Chinese. This study investigated the association between MBL and HIV-1 infection susceptibility among northern Han Chinese. A total of 91 HIV-1 infected patients and 91 HIV-1 seronegative healthy individuals were recruited. Six polymorphisms of MBL2 gene were genotyped by pyrosequencing. The quantitative measurement of serum MBL concentration and MBL complex activity were performed by ELISA. The CD4+ T-cell counts were determined by flow cytometry. The plasma viral loads of 91 HIV-1 infected patients were determined by bDNA method. The results show that there is an association between MBL and HIV-1 infection susceptibility among northern Han Chinese. The individuals with B variant, low serum MBL concentration and low MBL complex activity are more susceptible to HIV-1 infection.
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Affiliation(s)
- A Sheng
- School of Public Health and Family Medicine, Capital Medical University, Beijing, China
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Segat L, Crovella S. MBL2 polymorphisms and the choice of controls for association studies: just another story? Int J Immunogenet 2011; 38:101-4; author reply 105-8. [DOI: 10.1111/j.1744-313x.2010.00981.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Grasso DL, Segat L, Zocconi E, Radillo O, Trevisiol C, Crovella S. MBL expression in patients with recurrent tonsillitis. Int J Pediatr Otorhinolaryngol 2009; 73:1550-3. [PMID: 19716183 DOI: 10.1016/j.ijporl.2009.07.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 07/28/2009] [Accepted: 07/29/2009] [Indexed: 10/20/2022]
Abstract
OBJECTIVE We evaluated mannose binding lectin (MBL) protein production and histological localization, MBL2 gene expression and genotypes distribution in patients characterized by recurrent tonsillitis, with the aim of verifying the innate immune response to the infection and inflammation occurring in the tonsils. METHODS MBL2 exon 1 and promoter polymorphims were detected by PCR amplification and subsequent direct sequencing of the amplicons. Monoclonal antibodies to MBL were used on frozen sections of tonsils for the immunohistochemical localization of MBL protein. MBL Oligomer ELISA kit was used to quantify the level of MBL in the serum of the 30 patients with recurrent tonsillitis. Quantitative RT PCR for the evaluation of MBL2 expression of MBL high producers (HP), low producers (LP) and deficient producers (DP) was performed using the Hs00175093 gene-expression Assay on Demand. RESULTS The distribution of the MBL2 combined genotypes was as follows: 21 HP (70%; 15 HYA/HYA, 6 HYA/LXA), 6 LP (20%; 5 HYA/0, 1 LXA/LXA) and 3 DP (10%, all 0/0). MBL levels were directly correlated to the MBL2 combined genotypes: HP patients showed higher mean MBL concentration of 4044 ng/mL, LP patients were characterized by a mean of 905 ng/mL whereas those with DP combined genotype presented extremely low levels of MBL (mean value of 74 ng/mL) (p=0.0005). Immunohistochemistry performed on tonsils sections demonstrated that MBL was widely distributed throughout the surface of the basal lamina of all the 21 HP subjects. MBL was undetectable in situ in both LP and DP patients. MBL2 expression, although at very low levels, was found for the HP group, the LP and the DP group as well. CONCLUSIONS We confirmed the genotype-phenotype correlation of MBL2 gene exon 1 and promoter polymorphisms with the quantitative production of serum MBL, we reported a very low MBL2 expression at local level in tonsils and we determined the in situ localization of MBL in the basal lamina of the tonsils of patients who underwent to tonsillectomy. Our findings suggest an important role of MBL protein in the innate immune response of the tonsil to pathogens, as in recurrent infection and inflammation.
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MBL2 gene polymorphisms are correlated with high-risk human papillomavirus infection but not with human papillomavirus–related cervical cancer. Hum Immunol 2009; 70:436-9. [DOI: 10.1016/j.humimm.2009.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Revised: 02/20/2009] [Accepted: 03/02/2009] [Indexed: 11/21/2022]
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