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Price: EUR 145.00Human Antibodies is an international journal designed to bring together all aspects of human hybridomas and antibody technology, along with factors that modulate host antibody repertoire and effectiveness, such as vaccines, infectious agents, and microbiome. This includes fundamental research, applied science and clinical applications.
Emphasis in the published articles is on antisera, monoclonal antibodies, fusion partners, EBV transformation, transfections, in vitro immunization, defined antigens, tissue reactivity, scale-up production, chimeric antibodies, autoimmunity, natural antibodies/immune response, anti-idiotypes, and hybridomas secreting interesting growth factors. Immunoregulatory molecules, including T cell hybridomas, will also be featured.
Authors: Al-Nasralla, Azhar S.H. | Hussian, Suzan Saadi | Tektook, Nihad Khalawe
Article Type: Research Article
Abstract: INTRODUCTION: Among the cancers that impacts men, prostate cancer considerably raises deaths for males around the world. Persons with tumours can have a localized or advanced form of the illness. OBJECTIVE: The present study aimed to determining the relationship between the level of cytokines (IL-10 and TNF-a) and PSA in the sera of patients and compared it with healthy. MATERIALS AND METHODS: A case control study consist of three group included was in this study. The first group involves 50 patients with PC were observation in Al-Amal Oncology Hospital in the period …from April 2021 to April 2022 under the supervision of oncology specialists was included in this study. Second group consist of 30 patients. They have benign hyper plaisa (BHP), this group has been collected from urosergical department . Third group was include 20 healthy volunteers (non prostate cancer and non BHP). Prostate specific antigen (PSA) was measured by mini – VIDAS device using kit supplied by Biomerieux – France. IL-10 and TNF-a levels were measured by ELISA technique using kit supplied by CAUSABIO – China. RESULTS: Results of the present study showed the 60–69 years age group scored highest percentage in benign (56.7%), malignant (54.0%), compared to control (healthy) (50.0%), while > 69 years scored least percentage in these groups (3.3%, 14.0%, and 25.0%) respectively with significant different (p < 0.05). Additionally, the IL-10 and PSA scored highest mean levels in the malignant group (1.22 ± 0.23 and 27.66 ± 6.31), while TNF-a scored highest mean levels in a benign group (0.30 ± 0.11). The least mean level of IL-10 was in healthy (0.42 ± 0.15), TNF-a in malignant (0.23 ± 0.03), and PSA in benign (6.73 ± 1.36). Finally, there is a significant difference among age groups and PSA, IL-10, and TNF-parameters. CONCLUSIONS: We concluded the PSA, TNF-a and IL-10 parameters are play important roles in pathogenesis patients with prostate cancer. PCa is high prevalence in elderly population. Show more
Keywords: Prostate cancer, PSA, IL-10, TNF-a
DOI: 10.3233/HAB-220018
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-9, 2023
Authors: Abbas, Aymn T. | El-Kafrawy, Sherif A. | Tabll, Ashraf A. | Hashem, Anwar M. | Al Subhi, Tagreed L. | Alsaadi, Mohammed | Azhar, Esam I.
Article Type: Research Article
Abstract: BACKGROUND: Middle East Respiratory Syndrome Coronavirus is a highly pathogenic virus that poses a significant threat to public health. OBJECTIVE: The purpose of this study is to develop and characterize novel mouse monoclonal antibodies targeting the spike protein S1 subunit of the Middle East Respiratory Syndrome Corona Virus (MERS-CoV). METHODS: In this study, three mouse monoclonal antibodies (mAbs) against MERS-CoV were generated and characterized using hybridoma technology. The mAbs were evaluated for their reactivity and neutralization activity. The mAbs were generated through hybridoma technology by the fusion of myeloma cells and spleen cells …from MERS-CoV-S1 immunized mice. The resulting hybridomas were screened for antibody production using enzyme-linked immunosorbent assays (ELISA). RESULTS: ELISA results demonstrated that all three mAbs exhibited strong reactivity against the MERS-CoV S1-antigen. Similarly, dot-ELISA revealed their ability to specifically recognize viral components, indicating their potential for diagnostic applications. Under non-denaturing conditions, Western blot showed the mAbs to have robust reactivity against a specific band at 116 KDa, corresponding to a putative MERS-CoV S1-antigen. However, no reactive bands were observed under denaturing conditions, suggesting that the antibodies recognize conformational epitopes. The neutralization assay showed no in vitro reactivity against MERS-CoV. CONCLUSION: This study successfully generated three mouse monoclonal antibodies against MERS-CoV using hybridoma technology. The antibodies exhibited strong reactivity against MERS-CoV antigens using ELISA and dot ELISA assays. Taken together, these findings highlight the significance of these mAbs for potential use as valuable tools for MERS-CoV research and diagnosis (community and field-based surveillance and viral antigen detection). Show more
Keywords: Monoclonal antibodies, hybridoma, MERS-CoV, neutralization, diagnosis
DOI: 10.3233/HAB-240016
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-9, 2024
Authors: Najimi, Nouhaila | Kadi, Chaimae | Elmtili, Noureddine | Seghrouchni, Fouad | Bakri, Youssef
Article Type: Review Article
Abstract: Following infection and vaccination against SARS-CoV-2, humoral components of the adaptive immune system play a key role in protecting the host. Specifically, B cells generate high-affinity antibodies against various antigens of the virus. In this review, we discuss the mechanisms of immunity initiation through both natural infection and vaccination, shedding light on the activation of B cell subsets in response to SARS-CoV-2 infection and vaccination. The innate immune system serves as the initial line of primary and nonspecific defence against viruses. However, within several days following infection or a vaccine dose, a virus-specific immune response is initiated, primarily by B …cells that produce antibodies. These antibodies contribute to the resolution of the disease. Subsequently, these B cells transition into memory B cells, which play a crucial role in providing long-term immunity against the virus. CD4+ T helper cells initiate a cascade, leading to B cell somatic hypermutation, germinal center memory B cells, and the production of neutralizing antibodies. B-cell dysfunction can worsen disease severity and reduce vaccine efficacy. Notably, individuals with B cell immunodeficiency show lower IL-6 production. Furthermore, this review delves into several aspects of immune responses, such as hybrid immunity, which has shown promise in boosting broad-spectrum protection. Cross-reactive immunity is under scrutiny as well, as pre-existing antibodies can offer protection against the disease. We also decipher breakthrough infection mechanisms, especially with the novel variants of the virus. Finally, we discuss some potential therapeutic solutions regarding B cells including convalescent plasma therapy, B-1 cells, B regulatory cell (Breg) modulation, and the use of neutralizing monoclonal antibodies in combating the infection. Ongoing research is crucial to grasp population immunity trends and assess the potential need for booster doses in maintaining effective immune responses against potential viral threats. Show more
Keywords: Humoral immunity, B cells subsets, SARS-CoV-2, vaccination responses, COVID-19 Infection, Hybrid Immunity, cross-reactive immunity, breakthrough infections, high affinity antibodies, B Lymphocytes, therapeutic approaches
DOI: 10.3233/HAB-230017
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-22, 2024
Authors: Abdulqader, Halah Ahmed | Abood, Zainab Hekmatt
Article Type: Research Article
Abstract: BACKGROUND: Staphylococcus hominis is an opportunistic pathogen that expresses surface proteins, which are adhesive proteins that play a major role in biofilm formation. Biofilm is a protective layer that provides S. hominis bacteria with greater antibiotic resistance and promotes its adherence to biomedical surfaces, facilitating its entry into the bloodstream. OBJECTIVE: This research aimed to investigate the activity of Salicylic Acid (SA) and its effect on the gene expression of biofilm genes (FnbA and FnbB genes). METHODS: A total of 150 blood specimens were collected from patients. The specimens were …cultured in broth media of the BacT/ALERT® system and subcultured on blood and chocolate agar. Bacteria were detected using the VITEK2 system. FnbA and FnbB genes were detected using PCR. The broth microdilution method performed the minimum inhibitory concentration (MIC) of Salicylic acid (SA) on S. hominis isolates with both genes. Detection of the gene expression levels of FnbA and FnbB genes was assessed using Real-Time PCR(RT-PCR). RESULTS: The results showed that out of the 150 specimens collected, 35 were S. hominis . The detection of S. hominis bacteria was performed by PCR amplification of two genes FnbA and FnbB and showed 100% and 17.14% of isolates were positive for genes FnbA and FnbB , respectively. The expression of FnbA and FnbB genes was decreased in samples treated with SA compared with untreated ones. CONCLUSION: In conclusion, there is a significant impact of SA on the prevention of biofilm formation of S. hominis through the suppression of gene expression, specifically FnbA and FnbB. This could enhance susceptibility to antimicrobial treatments. However, more research is required to determine whether SA leads to the selection of resistant bacteria. Show more
Keywords: Staphylococcus hominis, PCR, RT-PCR, FnbA, FnbB, salicylic acid
DOI: 10.3233/HAB-240023
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-11, 2024
Authors: Chance, Randy | Kang, Angray Singh
Article Type: Review Article
Abstract: Monoclonal antibody biologics have significantly transformed the therapeutic landscape within the biopharmaceutical industry, partly due to the utilisation of discovery technologies such as the hybridoma method and phage display. While these established platforms have streamlined the development process to date, their reliance on cell transformation for antibody identification faces limitations related to library diversification and the constraints of host cell physiology. Cell-free systems like ribosome display offer a complementary approach, enabling antibody selection in a completely in vitro setting while harnessing enriched cellular molecular machinery. This review aims to provide an overview of the fundamental principles underlying the ribosome …display method and its potential for advancing antibody discovery and development. Show more
Keywords: Antibody, ribosome display, cell-free, antibody-ribosome-mRNA, reticulocytes
DOI: 10.3233/HAB-240001
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-14, 2024
Authors: Neunie, Omario A.M. | Rabbani, Wardah | Baker, David | Chambers, Emma S. | Pfeffer, Paul E. | Kang, Angray S.
Article Type: Review Article
Abstract: PURPOSE OF THE REVIEW: Asthma is a major global disease affecting adults and children, which can lead to hospitalization and death due to breathing difficulties. Although targeted monoclonal antibody therapies have revolutionized treatment of severe asthma, some patients still fail to respond. Here we critically evaluate the literature on biologic therapy failure in asthma patients with particular reference to anti-drug antibody production, and subsequent loss of response, as the potential primary cause of drug failure in asthma patients. RECENT FINDINGS: Encouragingly, asthma in most cases responds to treatment, including the use of an increasing number of …biologic drugs in moderate to severe disease. This includes monoclonal antibody inhibitors of immunoglobulin E and cytokines, including interleukin 4, 5, or 13 and thymic stromal lymphopoietin. These limit mast cell and eosinophil activity that cause the symptomatic small airways obstruction and exacerbations. SUMMARY: Despite humanization of the antibodies, it is evident that benralizumab; dupilumab; mepolizumab; omalizumab; reslizumab and tezepelumab all induce anti-drug antibodies to some extent. These can contribute to adverse events including infusion reactions, serum sickness, anaphylaxis and potentially disease activity due to loss of therapeutic function. Monitoring anti-drug antibodies (ADA) may allow prediction of future treatment-failure in some individuals allowing treatment cessation and switching therefore potentially limiting disease breakthrough. Show more
Keywords: Asthma, anti-drug antibodies, immunotherapy, monoclonal antibody
DOI: 10.3233/HAB-240002
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-8, 2024
Authors: Hassan, Huda A. | Ahmed, Hind Sh. | Hassan, Dheefaf F.
Article Type: Review Article
Abstract: BACKGROUND: Free radicals are small extremely reactive species that have unpaired electrons. Free radicals include subgroups of reactive species, which are all a product of regular cellular metabolism. Oxidative stress happens when the free radicals production exceeds the capacity of the antioxidant system in the body’s cells. OBJECTIVE: The current review clarifies the prospective role of antioxidants in the inhibition and healing of diseases. METHODS: Information on oxidative stress, free radicals, reactive oxidant species, and natural and synthetic antioxidants was obtained by searching electronic databases like PubMed, Web of Science, and Science Direct, …with articles published between 1987 and 2023 being included in this review. RESULTS: Free radicals exhibit a dual role in living systems. They are toxic byproducts of aerobic metabolism that lead to oxidative injury and tissue disorders and act as signals to activate appropriate stress responses. Endogenous and exogenous sources of reactive oxygen species are discussed in this review. Oxidative stress is a component of numerous diseases, including diabetes mellitus, atherosclerosis, cardiovascular disease, Alzheimer’s disease, Parkinson’s disease, and cancer. Although various small molecules assessed as antioxidants have shown therapeutic prospects in preclinical studies, clinical trial outcomes have been inadequate. Understanding the mechanisms through which antioxidants act, where, and when they are active may reveal a rational approach that leads to more tremendous pharmacological success. This review studies the associations between oxidative stress, redox signaling, and disease, the mechanisms through which oxidative stress can donate to pathology, the antioxidant defenses, the limits of their effectiveness, and antioxidant defenses that can be increased through physiological signaling, dietary constituents, and probable pharmaceutical interference. Prospective clinical applications of enzyme mimics and current progress in metal- and non-metal-based materials with enzyme-like activities and protection against chronic diseases have been discussed. CONCLUSION: This review discussed oxidative stress as one of the main causes of illnesses, as well as antioxidant systems and their defense mechanisms that can be useful in inhibiting these diseases. Thus, the positive and deleterious effects of antioxidant molecules used to lessen oxidative stress in numerous human diseases are discussed. The optimal level of vitamins and minerals is the amount that achieves the best feed benefit, best growth rate, and health, including immune efficiency, and provides sufficient amounts to the body. Show more
Keywords: Free radicals, reactive species, oxidative stress, enzymatic antioxidants, non-enzymatic antioxidants
DOI: 10.3233/HAB-240011
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-17, 2024
Authors: Khadka, Sony | Regmi, Sanjib Mani | Subedi, Nuwadatta | Poudel, Arjun | Bhandari, Dhaka Ram | Karn, Mitesh | Pradhan, Shanti | Shrestha, Prabin
Article Type: Research Article
Abstract: BACKGROUND: Information regarding seropositivity and vaccine efficacy among medical students is scarce. This study aims to detect the status of SARS-CoV-2 neutralizing antibodies among the Sinopharm’s Vero Cell (BBIBP-CorV) vaccinated medical students. MATERIALS AND METHODS: A prospective, cross-sectional study was carried out among medical students of Gandaki Medical College Teaching Hospital, Pokhara, Nepal from March through August 2022. The level of SARS-CoV-2 serum- neutralizing IgG antibody was measured and its relation with participants’ age and sex, duration of vaccination, and any comorbid condition was determined. RESULTS: A total of 110 medical students were …included in the final analysis, the majority being females (65.5%) and the mean age is 23.1 ± 3.2 years. Most of the students (96.4%) had neutralizing antibodies against SARS-CoV-2. Among the 29 (26.36%) students who received a booster dose, the positivity rate was 100%. The mean IgG levels were 9.57 ± 9.58 μ g/ml and 2.91 ± 2.47 μ g/ml among students receiving an additional booster dose and among those not receiving it, respectively. In the cohort receiving a booster dose of the vaccine, the average value of neutralizing IgG antibodies was high. In contrast, the ones not receiving it, the titers were low and showed a declining trend. CONCLUSION: Though the dose strategy of the Sinopharm vaccine is effective, booster vaccination may be an important strategy to ensure protection among medical students, who are at high risk of COVID-19 due to constant patient exposure during their training. Further studies should assess vaccine efficacy among individuals who received other vaccines as well. Show more
Keywords: Medical students, neutralizing antibody, seropositive, sinopharm, vaccine
DOI: 10.3233/HAB-240029
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-6, 2024
Authors: Thomas, Sheena Mariam | Muruganantham, Jethendra Kumar | Veerabathiran, Ramakrishnan
Article Type: Research Article
Abstract: BACKGROUND: Tuberculosis (TB) remains a universal health problem with significant morbidity and mortality. Understanding the genetic factors affecting TB susceptibility is crucial for effective prevention and treatment. Interleukin-10 (IL-10 ), a regulatory cytokine, may influence TB pathogenesis through genetic variations. METHODS: The PubMed, Embase, and Google Scholar databases were searched to find studies on the relationship between IL-10 gene variants and tuberculosis. Relevant studies from 2016 to 2024 were identified through database searches. The selected case-control studies met the inclusion criteria. Software such as Review Manager was used to analyze quantitative data, with statistical significance set …at p < 0.05. We calculated odds ratios and their respective confidence intervals to evaluate the associations. RESULTS: Nine studies examined IL-10 gene polymorphisms (rs1800871 and rs1800872) in TB susceptibility. The present study did not show a notable association between IL-10 gene polymorphisms and TB among all genetic models (allelic, homozygote, heterozygote, dominant, and recessive). The obtained p -value > 0.05 indicates an insignificant association between both gene polymorphisms of IL-10 . An OR-1.13; 95% CI-0.85, 1.50 was obtained for the SNP rs1800871, whereas an OR-1.02; 95% CI-0.75, 1.40 was obtained for the SNP rs1800872. CONCLUSION: Our meta-analysis revealed no significant association between IL-10 gene polymorphisms and TB susceptibility, suggesting that these variations may not significantly contribute to TB susceptibility. Further research with a larger sample size and diverse ethnicities is needed to explore additional genetic variations and their implications in TB pathogenesis. Show more
Keywords: Tuberculosis, IL-10 gene, polymorphisms, meta-analysis, susceptibility
DOI: 10.3233/HAB-240024
Citation: Human Antibodies, vol. Pre-press, no. Pre-press, pp. 1-11, 2024
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