Ioannis Mamais
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
Ioannis Mamais has a total of 190 co-authors. Here are the top co-authors by number of shared publications:
- Leondios G. Kostrikis
Department of Biological Sciences, University of Cyprus, Aglantzia, 2109 Nicosia, Cyprus
5 shared publications - Dimitrios Paraskevis
Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
4 shared publications - Theodoros Xanthos
School of Health sciences, University of West Attica, 12243 Athens, Greece
4 shared publications - Christos Iavazzo
Department of Gynaecological Oncology, Metaxa Cancer Hospital, Piraeus, Greece
3 shared publications - Christos Karagiannis
Department of Health Sciences, European University of Cyprus, 6 Diogenous Str, Engomi, 2404 Nicosia, Cyprus
3 shared publications - Georgios K. Nikolopoulos
Medical School, University of Cyprus, Nicosia, Cyprus
3 shared publications
Latest Publications
- 27 September 2025
- Published by Elsevier in International Emergency Nursing
- Vol. 83, 101686
When do emergencies happen? Exploring circadian, weekly, and seasonal trends in ambulance calls in Cyprus
- 27 September 2025
- Published by Elsevier in International Emergency Nursing
- Vol. 83, 101686
When do emergencies happen? Exploring circadian, weekly, and seasonal trends in ambulance calls in Cyprus
- Open Access
- 21 June 2024
- Published by MDPI AG in Clinics and Practice
- Vol. 14 (4) , 1225-1233
Individualized Cognitive Functional Therapy Compared with Conservative Treatment for Patients with Chronic Neck Pain—Study Protocol for a Single Blind Pragmatic Randomized Controlled Trial
Chronic neck pain (CNP) is one of the most common musculoskeletal conditions, is considered the second leading cause of pain, and is among the leading causes of disability. Cognitive Functional Therapy (CFT) is a novel behavioral therapy for individualizing the management of spinal pain targeting the multidimensional aspect of musculoskeletal pain. This study outlines the protocol for an assessor-blind randomized controlled trial (RCT) designed to compare an individualized Cognitive Functional Therapy (CFT) intervention with usual care in terms of pain and disability. Aiming for a pragmatic intervention, the CFT group will receive 16 sessions based on patient’s condition characteristics, and clinical presentation and progression. The control group will receive 16 sessions of standardized usual care (electrotherapy, massage, posture exercise, and educations). Both groups will have the same intervention duration. Patients will be randomly allocated into groups and will be assessed at baseline, at the 8th session, at the 16th session, and 3 months after randomization. Primary outcomes will be pain, disability, cervical range of motion, and neck muscle isometric strength. To our knowledge, this study will be the first RCT to compare the clinical effectiveness of CFT compared to UC for adults with CNP. The study results will provide information about the use of CFT in clinical practice.
- 21 June 2024
- Published by MDPI AG in Clinics and Practice
- Vol. 14 (4) , 1225-1233
Open AccessIndividualized Cognitive Functional Therapy Compared with Conservative Treatment for Patients with Chronic Neck Pain—Study Protocol for a Single Blind Pragmatic Randomized Controlled Trial
Chronic neck pain (CNP) is one of the most common musculoskeletal conditions, is considered the second leading cause of pain, and is among the leading causes of disability. Cognitive Functional Therapy (CFT) is a novel behavioral therapy for individualizing the management of spinal pain targeting the multidimensional aspect of musculoskeletal pain. This study outlines the protocol for an assessor-blind randomized controlled trial (RCT) designed to compare an individualized Cognitive Functional Therapy (CFT) intervention with usual care in terms of pain and disability. Aiming for a pragmatic intervention, the CFT group will receive 16 sessions based on patient’s condition characteristics, and clinical presentation and progression. The control group will receive 16 sessions of standardized usual care (electrotherapy, massage, posture exercise, and educations). Both groups will have the same intervention duration. Patients will be randomly allocated into groups and will be assessed at baseline, at the 8th session, at the 16th session, and 3 months after randomization. Primary outcomes will be pain, disability, cervical range of motion, and neck muscle isometric strength. To our knowledge, this study will be the first RCT to compare the clinical effectiveness of CFT compared to UC for adults with CNP. The study results will provide information about the use of CFT in clinical practice.
- Open Access
- 10 October 2023
- Published by Hindawi Limited in Rehabilitation Research and Practice
- Vol. 2023, 1-23
An Exploration of the Effectiveness of Different Intensity Protocols of Modified Constraint-Induced Therapy in Stroke: A Systematic Review
Purpose. To examine the effectiveness of different modified Constraint-Inuced Therapy (mCIMT) protocol intensities on upper extremity motor function in adults with hemiplegia. Methods. A search was conducted in PubMed, Scopus, EBSCO, and Cochrane Library for articles published between April 2010 and December 2021. Only randomized controlled trials (RCTs) were included. Studies were excluded if they used a sample of less than five, mCIMT in combination with other therapy, and/or if they were not written in English. Methodologic quality was assessed using the Cochrane collaboration risk of bias tool–2. Results. Thirty-six RCTs with a total of 721 participants were included. Most researchers followed a moderate to low protocol intensity in terms of total treatment time and moderate to high intensity with regard to restriction time. Almost all of the upper limb motor function measures showed statistically significant improvements ( p < .05 ) after mCIMT, irrespective of the protocol’s intensity, but there was lack of high-quality studies. Statistically significant improvements did not always translate to clinical importance. Conclusions. Low-intensity CIMT protocols may result in comparable improvements to more intensive ones but caution has to be taken when drawing conclusions due to high risk of bias studies.
- 10 October 2023
- Published by Hindawi Limited in Rehabilitation Research and Practice
- Vol. 2023, 1-23
Open AccessAn Exploration of the Effectiveness of Different Intensity Protocols of Modified Constraint-Induced Therapy in Stroke: A Systematic Review
Purpose. To examine the effectiveness of different modified Constraint-Inuced Therapy (mCIMT) protocol intensities on upper extremity motor function in adults with hemiplegia. Methods. A search was conducted in PubMed, Scopus, EBSCO, and Cochrane Library for articles published between April 2010 and December 2021. Only randomized controlled trials (RCTs) were included. Studies were excluded if they used a sample of less than five, mCIMT in combination with other therapy, and/or if they were not written in English. Methodologic quality was assessed using the Cochrane collaboration risk of bias tool–2. Results. Thirty-six RCTs with a total of 721 participants were included. Most researchers followed a moderate to low protocol intensity in terms of total treatment time and moderate to high intensity with regard to restriction time. Almost all of the upper limb motor function measures showed statistically significant improvements ( p < .05 ) after mCIMT, irrespective of the protocol’s intensity, but there was lack of high-quality studies. Statistically significant improvements did not always translate to clinical importance. Conclusions. Low-intensity CIMT protocols may result in comparable improvements to more intensive ones but caution has to be taken when drawing conclusions due to high risk of bias studies.
- Open Access
- 12 January 2022
- Published by MDPI AG in Current Oncology
- Vol. 29 (1) , 321-336
Safety Profile of Niraparib as Maintenance Therapy for Ovarian Cancer: A Systematic Review and Meta-Analysis
Background: Patients with epithelial ovarian cancer (EOC), treated with niraparib maintenance, present with haematological and gastrointestinal toxicities. Limited data exist on niraparib safety assessment. Objective: To evaluate niraparib safety profile, as maintenance therapy, in women with platinum-sensitive EOC. Methods: PubMed and Cochrane searches were carried out up to April 2021 for randomised controlled trials (RCTs) evaluating niraparib versus placebo in EOC patients with a response to platinum-based chemotherapy. Regarding the meta-analysis, for dichotomous data, the pooled risk ratio (RR) was calculated. Results: A total of 1539 patients from three RCTs revealed that niraparib-treated patients are associated with a significantly higher risk of any grade of nausea (RR, 2.15; 95% CI, 1.86 to 2.48), fatigue (RR, 1.26; 95% CI, 1.05 to 1.52, p < 0.00001), anemia (RR, 6.86; 95% CI, 2.54 to 18.52, p = 0.0001), thrombocytopenia (RR, 7.02; 95% CI, 1.68 to 29.38, p < 0.00001), vomiting (RR, 2.51; 95% CI, 1.50 to 4.19, p = 0.0005), neutropenia (RR, 2.96; 95% CI, 1.13 to 7.73, p < 0.00001), headache (RR, 2.08; 95% CI, 1.57 to 2.74, p < 0.00001), constipation (RR, 2.10; 95% CI, 1.72 to 2.57, p < 0.00001) and insomnia (RR, 2.48; 95% CI, 1.52 to 2.89, p = 0.0003) when compared with placebo. For grade 3 or 4 adverse effects, significantly higher risk was only noted for fatigue (RR,6.25; 95% CI, 1.70 to 23.05, p = 0.006), anemia (RR, 16.23; 95% CI, 4.86 to 54.17, p < 0.00001), thrombocytopenia (RR, 35.12; 95% CI, 12.23 to 100.82, p < 0.00001) and neutropenia episodes (RR, 6.35; 95% CI, 2.08 to 19.39, p = 0.001) for those taking niraparib. Notably, incidents of adverse effects and discontinuation rates were substantially lower among patients treated with an individualised niraparib dose than those treated with the standard one. Efficacy was not reduced, and no treatment-related deaths occurred during the included trials. Conclusion: Niraparib is considered an effective and well-tolerated choice, with an improved safety profile, for the maintenance treatment of EOC patients.
- 12 January 2022
- Published by MDPI AG in Current Oncology
- Vol. 29 (1) , 321-336
Open AccessSafety Profile of Niraparib as Maintenance Therapy for Ovarian Cancer: A Systematic Review and Meta-Analysis
Background: Patients with epithelial ovarian cancer (EOC), treated with niraparib maintenance, present with haematological and gastrointestinal toxicities. Limited data exist on niraparib safety assessment. Objective: To evaluate niraparib safety profile, as maintenance therapy, in women with platinum-sensitive EOC. Methods: PubMed and Cochrane searches were carried out up to April 2021 for randomised controlled trials (RCTs) evaluating niraparib versus placebo in EOC patients with a response to platinum-based chemotherapy. Regarding the meta-analysis, for dichotomous data, the pooled risk ratio (RR) was calculated. Results: A total of 1539 patients from three RCTs revealed that niraparib-treated patients are associated with a significantly higher risk of any grade of nausea (RR, 2.15; 95% CI, 1.86 to 2.48), fatigue (RR, 1.26; 95% CI, 1.05 to 1.52, p < 0.00001), anemia (RR, 6.86; 95% CI, 2.54 to 18.52, p = 0.0001), thrombocytopenia (RR, 7.02; 95% CI, 1.68 to 29.38, p < 0.00001), vomiting (RR, 2.51; 95% CI, 1.50 to 4.19, p = 0.0005), neutropenia (RR, 2.96; 95% CI, 1.13 to 7.73, p < 0.00001), headache (RR, 2.08; 95% CI, 1.57 to 2.74, p < 0.00001), constipation (RR, 2.10; 95% CI, 1.72 to 2.57, p < 0.00001) and insomnia (RR, 2.48; 95% CI, 1.52 to 2.89, p = 0.0003) when compared with placebo. For grade 3 or 4 adverse effects, significantly higher risk was only noted for fatigue (RR,6.25; 95% CI, 1.70 to 23.05, p = 0.006), anemia (RR, 16.23; 95% CI, 4.86 to 54.17, p < 0.00001), thrombocytopenia (RR, 35.12; 95% CI, 12.23 to 100.82, p < 0.00001) and neutropenia episodes (RR, 6.35; 95% CI, 2.08 to 19.39, p = 0.001) for those taking niraparib. Notably, incidents of adverse effects and discontinuation rates were substantially lower among patients treated with an individualised niraparib dose than those treated with the standard one. Efficacy was not reduced, and no treatment-related deaths occurred during the included trials. Conclusion: Niraparib is considered an effective and well-tolerated choice, with an improved safety profile, for the maintenance treatment of EOC patients.
- Open Access
- 15 December 2021
- Published by MDPI AG in Journal of Clinical Medicine
- Vol. 10 (24) , 5882
Circulating IgG Levels in SARS-CoV-2 Convalescent Individuals in Cyprus
Long-term persistence and the heterogeneity of humoral response to SARS-CoV-2 have not yet been thoroughly investigated. The aim of this work is to study the production of circulating immunoglobulin class G (IgG) antibodies against SARS-CoV-2 in individuals with past infection in Cyprus. Individuals of the general population, with or without previous SARS-CoV-2 infection, were invited to visit the Biobank at the Center of Excellence in Biobanking and Biomedical Research of the University of Cyprus. Serum IgG antibodies were measured using the SARS-CoV-2 IgG and the SARS-CoV-2 IgG II Quant assays of Abbott Laboratories. Antibody responses to SARS-CoV-2 were also evaluated against participants’ demographic and clinical data. All statistical analyses were conducted in Stata 16. The median levels of receptor binding domain (RBD)-specific IgG in 969 unvaccinated individuals, who were reportedly infected between November 2020 and September 2021, were 432.1 arbitrary units (AI)/mL (interquartile range—IQR: 182.4–1147.3). Higher antibody levels were observed in older participants, males, and those who reportedly developed symptoms or were hospitalized. The RBD-specific IgG levels peaked at three months post symptom onset and subsequently decreased up to month six, with a slower decay thereafter. IgG response to the RBD of SARS-CoV-2 is bi-phasic with considerable titer variability. Levels of IgG are significantly associated with several parameters, including age, gender, and severity of symptoms.
- 15 December 2021
- Published by MDPI AG in Journal of Clinical Medicine
- Vol. 10 (24) , 5882
Open AccessCirculating IgG Levels in SARS-CoV-2 Convalescent Individuals in Cyprus
Long-term persistence and the heterogeneity of humoral response to SARS-CoV-2 have not yet been thoroughly investigated. The aim of this work is to study the production of circulating immunoglobulin class G (IgG) antibodies against SARS-CoV-2 in individuals with past infection in Cyprus. Individuals of the general population, with or without previous SARS-CoV-2 infection, were invited to visit the Biobank at the Center of Excellence in Biobanking and Biomedical Research of the University of Cyprus. Serum IgG antibodies were measured using the SARS-CoV-2 IgG and the SARS-CoV-2 IgG II Quant assays of Abbott Laboratories. Antibody responses to SARS-CoV-2 were also evaluated against participants’ demographic and clinical data. All statistical analyses were conducted in Stata 16. The median levels of receptor binding domain (RBD)-specific IgG in 969 unvaccinated individuals, who were reportedly infected between November 2020 and September 2021, were 432.1 arbitrary units (AI)/mL (interquartile range—IQR: 182.4–1147.3). Higher antibody levels were observed in older participants, males, and those who reportedly developed symptoms or were hospitalized. The RBD-specific IgG levels peaked at three months post symptom onset and subsequently decreased up to month six, with a slower decay thereafter. IgG response to the RBD of SARS-CoV-2 is bi-phasic with considerable titer variability. Levels of IgG are significantly associated with several parameters, including age, gender, and severity of symptoms.
- 1 July 2021
- Published by Elsevier in Journal of Bodywork and Movement Therapies
- Vol. 27, 477-486
Blood flow restriction training in patients with knee osteoarthritis: Systematic review of randomized controlled trials
- 1 July 2021
- Published by Elsevier in Journal of Bodywork and Movement Therapies
- Vol. 27, 477-486
Blood flow restriction training in patients with knee osteoarthritis: Systematic review of randomized controlled trials
- Open Access
- 8 November 2020
- Published by MDPI AG in Journal of Clinical Medicine
- Vol. 9 (11) , 3598
Extensive Testing and Public Health Interventions for the Control of COVID-19 in the Republic of Cyprus between March and May 2020
Coronavirus disease 2019 (COVID-19) has significantly affected the well-being of individuals worldwide. We herein describe the epidemiology of COVID-19 in the Republic of Cyprus during the first epidemic wave (9 March–3 May 2020). We analyzed surveillance data from laboratory-confirmed cases, including targeted testing and population screening. Statistical analyses included logistic regression. During the surveillance period, 64,136 tests (7322.3 per 100,000) were performed, 873 COVID-19 cases were diagnosed, and 20 deaths were reported (2.3%). Health-care workers (HCWs) represented 21.4% of cases. Overall, 19.1% of cases received hospital care and 3.7% required admission to Intensive Care Units. Male sex (adjusted Odds Ratio (aOR): 3.04; 95% Confidence Interval (CI): 1.97–4.69), increasing age (aOR: 1.56; 95%CI: 1.36–1.79), symptoms at diagnosis (aOR: 6.05; 95%CI: 3.18–11.50), and underlying health conditions (aOR: 2.08; 95%CI: 1.31–3.31) were associated with hospitalization. For recovered cases, the median time from first to last second negative test was 21 days. Overall, 119 primary cases reported 616 close contacts, yielding a pooled secondary attack rate of 12% (95%CI: 9.6–14.8%). Three population-based screening projects, and two projects targeting employees and HCWs, involving 25,496 people, revealed 60 positive individuals (0.2%). Early implementation of interventions with targeted and expanded testing facilitated prompt outbreak control on the island.
- 8 November 2020
- Published by MDPI AG in Journal of Clinical Medicine
- Vol. 9 (11) , 3598
Open AccessExtensive Testing and Public Health Interventions for the Control of COVID-19 in the Republic of Cyprus between March and May 2020
Coronavirus disease 2019 (COVID-19) has significantly affected the well-being of individuals worldwide. We herein describe the epidemiology of COVID-19 in the Republic of Cyprus during the first epidemic wave (9 March–3 May 2020). We analyzed surveillance data from laboratory-confirmed cases, including targeted testing and population screening. Statistical analyses included logistic regression. During the surveillance period, 64,136 tests (7322.3 per 100,000) were performed, 873 COVID-19 cases were diagnosed, and 20 deaths were reported (2.3%). Health-care workers (HCWs) represented 21.4% of cases. Overall, 19.1% of cases received hospital care and 3.7% required admission to Intensive Care Units. Male sex (adjusted Odds Ratio (aOR): 3.04; 95% Confidence Interval (CI): 1.97–4.69), increasing age (aOR: 1.56; 95%CI: 1.36–1.79), symptoms at diagnosis (aOR: 6.05; 95%CI: 3.18–11.50), and underlying health conditions (aOR: 2.08; 95%CI: 1.31–3.31) were associated with hospitalization. For recovered cases, the median time from first to last second negative test was 21 days. Overall, 119 primary cases reported 616 close contacts, yielding a pooled secondary attack rate of 12% (95%CI: 9.6–14.8%). Three population-based screening projects, and two projects targeting employees and HCWs, involving 25,496 people, revealed 60 positive individuals (0.2%). Early implementation of interventions with targeted and expanded testing facilitated prompt outbreak control on the island.
- Open Access
- 28 September 2020
- Published by Springer Nature in Cureus
- Vol. 12 (9) , e10693
Reoperations After Cataract Surgery: Is the Incidence Predictable Through a Risk Factor Stratification System?
The objective of the study was to quantify the number of procedures needed to achieve the best possible surgical outcome, depending on the number and type of risk factors identified. Two independent observers reviewed the medical records of 1,502 patients who underwent phacoemulsification surgery, during a two-year period (January 1, 2014 to December 31, 2015). Preoperative risk factors were documented according to the stratification system used. Based on the total risk score, each case was allocated to one of four risk groups with 0, 1-2, 3-5, and >6 total risk factors, respectively. All qualitative and quantitative characteristics were gathered and included in a multivariate analysis. A total of 1,792 eyes were included. Αge over 88 years, low cooperation ability with the patient, and surgeries performed by residents tended to have more often complications, while white/intumescent cataract, iridodonesis/phacodonesis, α1 blockers intake, and male gender are risk factors positively associated with more than one surgery. Risk factors tend to be prognostic for possible intraoperative complications. The number of procedures needed for the best possible surgical outcome seems to depend on these preoperative risk factors. A stratification method increases the level of awareness of the surgeon, and therefore may decrease the number of complications and even procedures while enhancing the "safe" practice and skills of residents.
- 28 September 2020
- Published by Springer Nature in Cureus
- Vol. 12 (9) , e10693
Open AccessReoperations After Cataract Surgery: Is the Incidence Predictable Through a Risk Factor Stratification System?
The objective of the study was to quantify the number of procedures needed to achieve the best possible surgical outcome, depending on the number and type of risk factors identified. Two independent observers reviewed the medical records of 1,502 patients who underwent phacoemulsification surgery, during a two-year period (January 1, 2014 to December 31, 2015). Preoperative risk factors were documented according to the stratification system used. Based on the total risk score, each case was allocated to one of four risk groups with 0, 1-2, 3-5, and >6 total risk factors, respectively. All qualitative and quantitative characteristics were gathered and included in a multivariate analysis. A total of 1,792 eyes were included. Αge over 88 years, low cooperation ability with the patient, and surgeries performed by residents tended to have more often complications, while white/intumescent cataract, iridodonesis/phacodonesis, α1 blockers intake, and male gender are risk factors positively associated with more than one surgery. Risk factors tend to be prognostic for possible intraoperative complications. The number of procedures needed for the best possible surgical outcome seems to depend on these preoperative risk factors. A stratification method increases the level of awareness of the surgeon, and therefore may decrease the number of complications and even procedures while enhancing the "safe" practice and skills of residents.
- Open Access
- 1 January 2020
- Published by Sociedade Brasileira de Pneumologia e Tisiologia in Jornal Brasileiro de Pneumologia
- Vol. 46 (6) , e20190370
Upper limb exercise training and activities of daily living in patients with COPD: a systematic review of randomized controlled trials
To investigate the efficacy of upper limb exercise training (ULExT) in improving the performance of activities of daily living (ADL) that involve the upper limbs (UL) in patients with COPD. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were used in this systematic review. PubMed and EBSCOhost databases were searched to identify randomized controlled trials involving adults with COPD who underwent ULExT, compared with those who underwent other types of exercise or no exercise, in order to assess the performance of ADL that involve the UL. The methodological quality of the selected studies was assessed using the Physiotherapy Evidence Database scale. Five studies, with a total sample of 173 subjects, met the inclusion criteria. The results of the selected studies showed that ULExT is safe and can significantly improve the performance of ADL that involve the UL in patients with COPD. However, there were inconsistencies in the results, especially regarding the perception of symptoms during ADL. The small number of studies included and their methodological quality do not allow for firm conclusions. The findings of this review revealed that ULExT is a safe therapeutic approach and can improve the performance of ADL that involve the UL in patients with COPD, but the results are unclear. Further investigation through well-designed randomized trials is warranted to determine the effectiveness of ULExT in improving the performance of ADL that involve the UL in patients with COPD.
- 1 January 2020
- Published by Sociedade Brasileira de Pneumologia e Tisiologia in Jornal Brasileiro de Pneumologia
- Vol. 46 (6) , e20190370
Open AccessUpper limb exercise training and activities of daily living in patients with COPD: a systematic review of randomized controlled trials
To investigate the efficacy of upper limb exercise training (ULExT) in improving the performance of activities of daily living (ADL) that involve the upper limbs (UL) in patients with COPD. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were used in this systematic review. PubMed and EBSCOhost databases were searched to identify randomized controlled trials involving adults with COPD who underwent ULExT, compared with those who underwent other types of exercise or no exercise, in order to assess the performance of ADL that involve the UL. The methodological quality of the selected studies was assessed using the Physiotherapy Evidence Database scale. Five studies, with a total sample of 173 subjects, met the inclusion criteria. The results of the selected studies showed that ULExT is safe and can significantly improve the performance of ADL that involve the UL in patients with COPD. However, there were inconsistencies in the results, especially regarding the perception of symptoms during ADL. The small number of studies included and their methodological quality do not allow for firm conclusions. The findings of this review revealed that ULExT is a safe therapeutic approach and can improve the performance of ADL that involve the UL in patients with COPD, but the results are unclear. Further investigation through well-designed randomized trials is warranted to determine the effectiveness of ULExT in improving the performance of ADL that involve the UL in patients with COPD.