Session Introduction: Overcoming health disparities in precision medicine

The following sections are included:OverviewDealing with the lack of diversity in current research datasetsDevelopment of fair machine learning algorithmsRace, genetic ancestry, and population structureConclusionAcknowledgments.

Group 2 ITI Consensus Report: Technological developments in implant prosthetics

OBJECTIVES

Group-2 reviewed the scientific evidence in the field of «Technology». Focused research questions were: (1) additive versus subtractive manufacturing of implant restorations; (2) survival, complications, and esthetics comparing prefabricated versus customized abutments; and (3) survival of posterior implant-supported multi-unit fixed dental prostheses.

MATERIALS AND METHODS

Literature was systematically screened, and 67 publications could be critically reviewed following PRISMA guidelines, resulting in three systematic reviews. Consensus statements were presented to the plenary where after modification, those were accepted.

RESULTS

Additively fabricated implant restorations of zirconia and polymers were investigated for marginal/internal adaptation and mechanical properties without clear results in favor of one technology or material. Titanium base abutments for screw-retained implant single crowns compared to customized abutments did not show significant differences concerning 1-year survival. PFM, veneered and monolithic zirconia implant-supported multi-unit posterior fixed dental prostheses demonstrated similar high 3-year survival rates, whereas veneered restorations exhibited the highest annual ceramic fracture and chipping rates.

CONCLUSIONS

For interim tooth-colored implant single crowns both additive and subtractive manufacturing are viable techniques. The clinical performance of additively produced restorations remains to be investigated. Implant single crowns on titanium base abutments show similar clinical performance compared to other type of abutments; however, long-term clinical data from RCTs are needed. The abutment selection should be considered already during the planning phase. Digital planning facilitates 3D visualization of the prosthetic design including abutment selection. In the posterior area, monolithic zirconia is recommended as the material of choice for multi-unit implant restorations to reduce technical complications.

Global Biobank Meta-analysis Initiative: Powering genetic discovery across human disease

Biobanks facilitate genome-wide association studies (GWASs), which have mapped genomic loci across a range of human diseases and traits. However, most biobanks are primarily composed of individuals of European ancestry. We introduce the Global Biobank Meta-analysis Initiative (GBMI)-a collaborative network of 23 biobanks from 4 continents representing more than 2.2 million consented individuals with genetic data linked to electronic health records. GBMI meta-analyzes summary statistics from GWASs generated using harmonized genotypes and phenotypes from member biobanks for 14 exemplar diseases and endpoints. This strategy validates that GWASs conducted in diverse biobanks can be integrated despite heterogeneity in case definitions, recruitment strategies, and baseline characteristics. This collaborative effort improves GWAS power for diseases, benefits understudied diseases, and improves risk prediction while also enabling the nomination of disease genes and drug candidates by incorporating gene and protein expression data and providing insight into the underlying biology of human diseases and traits.

Validating and automating learning of cardiometabolic polygenic risk scores from direct-to-consumer genetic and phenotypic data: implications for scaling precision health research

Introduction

A major challenge to enabling precision health at a global scale is the bias between those who enroll in state sponsored genomic research and those suffering from chronic disease. More than 30 million people have been genotyped by direct-to-consumer (DTC) companies such as 23andMe, Ancestry DNA, and MyHeritage, providing a potential mechanism for democratizing access to medical interventions and thus catalyzing improvements in patient outcomes as the cost of data acquisition drops. However, much of these data are sequestered in the initial provider network, without the ability for the scientific community to either access or validate. Here, we present a novel geno-pheno platform that integrates heterogeneous data sources and applies learnings to common chronic disease conditions including Type 2 diabetes (T2D) and hypertension.

Methods

We collected genotyped data from a novel DTC platform where participants upload their genotype data files and were invited to answer general health questionnaires regarding cardiometabolic traits over a period of 6 months. Quality control, imputation, and genome-wide association studies were performed on this dataset, and polygenic risk scores were built in a case–control setting using the BASIL algorithm.

Results

We collected data on N = 4,550 (389 cases / 4,161 controls) who reported being affected or previously affected for T2D and N = 4,528 (1,027 cases / 3,501 controls) for hypertension. We identified 164 out of 272 variants showing identical effect direction to previously reported genome-significant findings in Europeans. Performance metric of the PRS models was AUC = 0.68, which is comparable to previously published PRS models obtained with larger datasets including clinical biomarkers.

Discussion

DTC platforms have the potential of inverting research models of genome sequencing and phenotypic data acquisition. Quality control (QC) mechanisms proved to successfully enable traditional GWAS and PRS analyses. The direct participation of individuals has shown the potential to generate rich datasets enabling the creation of PRS cardiometabolic models. More importantly, federated learning of PRS from reuse of DTC data provides a mechanism for scaling precision health care delivery beyond the small number of countries who can afford to finance these efforts directly.

Conclusions

The genetics of T2D and hypertension have been studied extensively in controlled datasets, and various polygenic risk scores (PRS) have been developed. We developed predictive tools for both phenotypes trained with heterogeneous genotypic and phenotypic data generated outside of the clinical environment and show that our methods can recapitulate prior findings with fidelity. From these observations, we conclude that it is possible to leverage DTC genetic repositories to identify individuals at risk of debilitating diseases based on their unique genetic landscape so that informed, timely clinical interventions can be incorporated.

Supplementary Information

The online version contains supplementary material available at 10.1186/s40246-022-00406-y.

Ancient DNA reveals five streams of migration into Micronesia and matrilocality in early Pacific seafarers

Micronesia began to be peopled earlier than other parts of Remote Oceania, but the origins of its inhabitants remain unclear. We generated genome-wide data from 164 ancient and 112 modern individuals. Analysis reveals five migratory streams into Micronesia. Three are East Asian related, one is Polynesian, and a fifth is a Papuan source related to mainland New Guineans that is different from the New Britain-related Papuan source for southwest Pacific populations but is similarly derived from male migrants ~2500 to 2000 years ago. People of the Mariana Archipelago may derive all of their precolonial ancestry from East Asian sources, making them the only Remote Oceanians without Papuan ancestry. Female-inherited mitochondrial DNA was highly differentiated across early Remote Oceanian communities but homogeneous within, implying matrilocal practices whereby women almost never raised their children in communities different from the ones in which they grew up.

Predicting complicated appendicitis based on clinical findings: the role of Alvarado and Appendicitis Inflammatory Response scores

PURPOSE

The pre-interventional differentiation between complicated and uncomplicated appendicitis is decisive for treatment. In the context of conservative therapy, the definitive diagnosis of uncomplicated appendicitis is mandatory. This study investigates the ability of clinical scoring systems and imaging to differentiate between the two entities.

METHODS

This is a retrospective analysis of two cohorts from two tertiary referral centers in Switzerland and Germany. All consecutive patients underwent appendectomy between January 2008 and April 2013 (in the first cohort) or between January 2017 and June 2019 (the second cohort). Exclusion criteria did not apply as all patients found by the database search and received an appendectomy were included. Diagnostic testing and calculation of a receiver operating curve were performed to identify a cutoff for clinical scores that resulted in a minimum sensitivity of 90% to detect complicated appendicitis. The cutoff was combined with additional diagnostic imaging criteria to see if diagnostic properties could be improved.

RESULTS

Nine hundred fifty-six patients were included in the analysis. Two hundred twenty patients (23%) had complicated appendicitis, and 736 patients (77%) had uncomplicated appendicitis or no inflammation. The complicated appendicitis cohort had a mean Alvarado score of 7.03 and a mean AIR of 5.21. This compared to a mean Alvarado of 6.53 and a mean AIR of 4.07 for the uncomplicated appendicitis cohort. The highest Alvarado score with a sensitivity of > 90% to detect complicated appendicitis was ≧ 5 (sensitivity = 95%, specificity 8.99%). The highest AIR score with a sensitivity of > 90% to detect complicated appendicitis was ≧ 3 (sensitivity 91.82%, specificity 18.53). The analysis showed that additional CT information did not improve the sensitivity of the proposed cut-offs.

CONCLUSION

AIR and Alvarado scores showed limited capability to distinguish between complicated and uncomplicated appendicitis even with additional imaging in this retrospective cohort. As conservative management of appendicitis needs to exclude patients with complicated disease reliably, appendectomy seems until now to remain the safest option to prevent undertreatment of this mostly benign disease.

Unhealthy behaviours of patients with cardiovascular diseases during the second COVID-19 lockdown in Northern Greece

Funding Acknowledgements

Type of funding sources: None.

Introduction

Unhealthy behaviours can be amplified during lockdown and organisations, like WHO and CDC, campaign on how to stay healthy at home. Lifestyle choices are of paramount importance for primary and secondary prevention of cardiovascular diseases (CVDs). Northern Greece was forcefully hit by the second wave of the COVID-19 pandemic and a hard lockdown was implemented in November 2020.

Purpose

The aim of the study was to assess the (un)healthy behaviours of patients with CVDs during the second COVID-19 lockdown in Northern Greece.

Methods

This is a cross-sectional short questionnaire telephone-based survey conducted in February 2021. Responders with known CVDs were primarily questioned (using a Likert-like scale) about smoking, diet and physical activity, along essential medical history. Beliefs about COVID-19 pandemic and vaccination were also considered. Sociodemographic details were noted. Patients who were placed under quarantine were excluded in this analysis.

Results

The response rate was high (247 out of 400 calls, 61.8%) with the majority of the participants willing to speak for longer time than initially estimated. In total, answers by 216 patients (female 132/61.1%, mean age 56.6 years old) were incorporated. There were 119 active smokers questioned, half of whom (56, 47.1%) reported increased smoking with a minority of them (18, 15.1%) smoking less. None of the questioned participants attempted to quit smoking. The mean BMI was 27.5 ± 4.3 kg/m² (vs. 26.8 ± 3.8 kg/m² before lockdown) corresponding to a mean weight gain of about 2 kg. The rise in mean BMI could be explained, partly, by the increased eating as reported by almost half of the participants (121, 56.0%). Almost half of the responders (113, 52.3%) reported increased alcohol consumption during the lockdown, while one fifth reported unchanged drinking. One in four patients stated lower alcohol consumption mainly due to difficult supply and bar closure. The majority of the participants (177, 81.9%) answered that they exercised similarly or less in comparison to their pre-lockdown habits, while only 39 (18.1%) have been more physically active. There was no difference between the patients who were favourable about vaccination (had already been vaccinated/ had arranged an appointment/ were willing to get) and those who objected/ were hesitant. Sample size would not allow thorough comparison between age groups or socioeconomic status. Nevertheless, younger patients reportedly adopted healthier choices than older patients (who were also more like to be pensioners).

Conclusion

The hard lockdown in Greece during the second wave of the COVID-19 pandemic was accompanied with an aggravation of unhealthy choices by patients with CVDs. Further research is warrant to assess the clinical impact of these behaviours. Public campaigns are anxiously needed to promote healthy behaviours.

Extend of unhealthy behaviours of patients with cardiovascular diseases during the second COVID-19 lockdown in Northern Greece: comparison between urban and rural residents

Funding Acknowledgements

Type of funding sources: None.

Introduction

Unhealthy behaviours can be amplified during lockdown and organisations, like WHO and CDC, campaign on how to stay healthy at home. Lifestyle choices are of paramount importance for primary and secondary prevention of cardiovascular diseases (CVDs). Northern Greece was forcefully hit by the second wave of the COVID-19 pandemic and a hard lockdown was implemented in November 2020.

Purpose

The aim of the study was to assess the (un)healthy behaviours of patients with CVDs during the second COVID-19 lockdown in Northern Greece and to compare the urban with the rural population.

Methods

This is a cross-sectional short questionnaire telephone-based survey conducted in February 2021. Responders with known CVDs were primarily questioned (using a Likert-like scale) about smoking, diet and physical activity, along essential medical history. Beliefs about COVID-19 pandemic and vaccination were also considered. Sociodemographic details were noted. Patients who were placed under quarantine were excluded in this analysis.

Results

The response rate was high (438 out of 700 calls, 62.6%) with the majority of the participants willing to speak for longer time than initially estimated. In total, answers by 395 patients (216 urban and 179 rural) (female 252/63.8%, mean age 57.3 years old) were incorporated. There were 200 active smokers questioned (urban: 119, 55.1% - rural: 81, 45.3%). More urban residents increased smoking (56, 47.1%) than rural ones (24, 29.6%). Of note, the majority of the rural patients reported smoking similarly than before the lockdown. Unfortunately, none of the questioned participants attempted to quit smoking. The mean BMI of the urban patients was 27.5 ± 4.3 kg/m² (vs. 26.8 ± 3.8 kg/m² before lockdown) corresponding to a mean weight gain of about 2 kg. The rise in mean BMI could be explained, partly, by the increased eating as reported by almost half of the urban participants (121, 56.0%). There was a smaller increase in mean BMI of the rural sample (from 26.6 ± 3.9 kg/m² to 26.9 ± 4.1 kg/m²) corresponding to a mean weight gain of less than 1 kg. The limited weight gain is represented by the majority of the rural patients reported that they didn’t change their eating habits. The vast minority of the urban and the rural participants answered that they increased exercising in comparison to their pre-lockdown habits (39, 18.1% vs 37, 19.4%, p>0.05), Contrary to that, more than half of the rural patients had maintained similar levels of physical activity (109, 57.1%).

Conclusion

The hard lockdown in Greece during the second wave of the COVID-19 pandemic was accompanied with an aggravation of unhealthy choices by patients with CVDs. This observation was more apparent in the urban population. Further research is warrant to assess the clinical impact of these behaviours. Public campaigns are anxiously needed to promote healthy behaviours.

Parathyroid adenoma in pregnancy: A case report and systematic review of the literature

OBJECTIVE

Primary hyperparathyroidism is a common disorder of the parathyroid glands. Parathyroid adenoma (PA) in pregnancy is a relatively rare disease, whose diagnosis and treatment is a challenging task. The aim of the present study is to present a new case of parathyroid adenoma during pregnancy and to give a detailed account of all reported cases of parathyroid adenoma during pregnancy in the literature.

STUDY DESIGN

A bibliographic research was performed, and characteristics of parathyroid adenomas in pregnancy such as age, gestational week at diagnosis, ionized calcium levels, genetic testing result, symptomatology, radiological method of localization, treatment method, gestational week at operation, and maternal/fetal complications were recorded.

RESULTS

A 34-year-old woman at her 25 weeks' gestation was diagnosed with parathyroid adenoma and was referred to our Surgical Department due to contraindication for conservative treatment. A parathyroidectomy was performed, and the maternal and fetal postoperative period was uneventful. Two hundred eleven cases of parathyroid adenoma in pregnancy were recorded in the literature, and statistical analysis was performed. The median gestational week at diagnosis was 21 ± 9.61 weeks. The mean level of ionized calcium was 2.69 mmol/l [SD = 0.75 (2.55-2.84 95% CI)]. Most cases were familiar (72.4%), while surgery was the preferred treatment option (67.3%). The majority of cases were asymptomatic (21.7%), and the main radiological method applied for localization was ultrasound (63.4%).

CONCLUSION

Parathyroid adenoma in pregnancy is a rare condition. The early diagnosis is of great importance as surgical treatment at the second trimester of pregnancy outweighs the maternal and fetal risks.

Global parental leave in surgical careers: differences according to gender, geographical regions and surgical career stages

BACKGROUND

There is a lack of information regarding the provision of parental leave for surgical careers. This survey study aims to evaluate the experience of maternity/paternity leave and views on work-life balance globally.

METHODS

A 55-item online survey in 24 languages was distributed via social media as per CHERRIES guideline from February to March 2020. It explored parental leave entitlements, attitude towards leave taking, financial impact, time spent with children and compatibility of parenthood with surgical career.

RESULTS

Of the 1393 (male : female, 514 : 829) respondents from 65 countries, there were 479 medical students, 349 surgical trainees and 513 consultants. Consultants had less than the recommended duration of maternity leave (43.8 versus 29.1 per cent), no paid maternity (8.3 versus 3.2 per cent) or paternity leave (19.3 versus 11.0 per cent) compared with trainees. Females were less likely to have children than males (36.8 versus 45.6 per cent, P = 0.010) and were more often told surgery is incompatible with parenthood (80.2 versus 59.5 per cent, P < 0.001). Males spent less than 20 per cent of their salary on childcare and fewer than 30 hours/week with their children. More than half (59.2 per cent) of medical students did not believe a surgical career allowed work-life balance.

CONCLUSION

Surgeons across the globe had inadequate parental leave. Significant gender disparity was seen in multiple aspects.

Knowledge about atrial fibrillation and direct oral anticoagulation agents in Greek patients

Funding Acknowledgements

Type of funding sources: None.

Background

Atrial fibrillation (AF) poses significant burden to patients, physicians, and healthcare systems globally. Patient knowledge about AF and its management is often limited though it is a perquisite for patient involvement and shared decision making. Direct oral anticoagulants (DOACs) are recommended for stroke prevention.

Purpose

The aim of this study was to assess the knowledge about AF and anticoagulation of AF patients.

Methods

Patients with AF on DOACs visiting the outpatient clinics of a city hospital in northern Greece were invited to participate. The Jessa AF Knowledge Questionnaire (JAKQ) was used (as part of the validation study of the Greek translation).

Results

In total, 285 patients participated (female 57.9%) with mean age 65 ± 13 years. The mean JAKQ score was 57.2 ± 17.4% corresponding to medium level of knowledge. Higher scores were positively associated with more schooling years and longer AF duration. The percentage of correct answer varied among the questions. One third of the participants answered wrongly (59 patients, 20.7%) or didn’t know (38 patients, 13.3%) what atrial fibrillation means. More than half of the patients didn’t know that AF is not always accompanied by symptoms and that medication cannot prevent AF permanently (154, 54.0% and 169, 59.3% respectively). The majority of patients knew that strokes are a consequence of AF and that blood thinners are prescribed in order to prevent clot formation (222, 77.9% and 226, 79.3% correspondingly). Moreover, most patients didn’t know correctly which painkiller they should prefer (177, 62.1%) and what to do when missing a dose (172, 60.4%). As expected patients who has experienced a bleeding event (minor or major that lead to medical care) scored higher (62.3% vs. 56.2%, p &lt; 0.05). All patients replied that they would like to be offered more information (leaflets, online site, mobile applications, etc.).

Conclusions

A brief and validated questionnaire could be used to assess patients" knowledge of their condition and treatment, which would reveal important gaps. Further research is needed to evaluate if such an instrument could be used as a tool for individually tailored patient education.

Knowledge about specific reversal agent of Greek AF patients on direct oral anticoagulants

Funding Acknowledgements

Type of funding sources: None.

Background

Clinical guidelines recommend taking into account the patient’s preference when deciding on the options of direct oral anticoagulation (DOAC) therapy. Therefore, education is a prerequisite for informed, involved patients and patient-centred care.

Purpose

The aim of this study was to assess the patient’s awareness about the existence of the dabigatran specific reversal agent (Idarucizumab) and whether the patient was involved in the decision of the specific DOAC regimen.

Methods

Non-valvular atrial fibrillation (AF) patients on DOAC who visited the outpatient clinics of a city hospital in northern Greece were invited to participate. This project was part of the validation study of the Greek version of the Jessa Atrial fibrillation Knowledge Questionnaire. Analyses were performed by IBM SPSS Statistics.

Results

In total, there were 312 participants (168 females, 53.8%) with mean age: 64 ± 5.3 years old. The vast majority of patients (256, 82.1%) were not aware of the existence of any specific reversal agent regardless the socio-economic status (annual income, years of schooling) or the duration and type of AF. Patients that were switched from a vitamin-K antagonist (acenocoumarol) to a DOAC were more likely to be informed about specific reversal agents (31 out of 63 patients switched to DOAC, 49.2% vs. 10.0%, p &lt; 0.05). Similarly, patients taking more than 5 pills per day were more likely to know about the reversal agent (41 of the 193 patients, 21.2% vs. 12.6%). Moreover, the majority of patients that reported any bleeding event that lead to seeking medical advice (minor or major bleeding) were informed about the specific reversal agent (35 out of 52 patients reporting bleeding event, 67.3% vs. 8.1%, p &lt; 0.05). Inappropriately, only seven of the 38 patients (18.4%) that were also taking antiplatelet agents (mainly acetylsalicylic acid or clopidogrel) were aware of specific DOAC reversal agents. Patients with history of stoke or transient ischaemic attack were also better informed (38 out of 53 patients, 71.7% vs. 6.9%). Only about one of five patients on dabigatran (27 out of 129, 20.9%) knew about the dabigatran specific reversal agent, mainly from sources other than their doctor (e.g. journal in office waiting room). All patients agreed that they would prefer to have been informed about the current specific reversal agents when deciding on DOAC therapy. No data could be collected why patients who were informed about specific reversal agent were not prescribed dabigatran.

Conclusions

The sample of Greek non-valvular AF patients showed a noticeably low awareness of the existence of the specific DOAC reversal agent. It seems that DOAC prescription was a rather limited shared decision. Further research is warranted to confirm the aforementioned results.

Patient"s awareness of recommended LDL-C goals in primary prevention and observed achievement

Funding Acknowledgements

Type of funding sources: None.

Introduction

The novel 2019 ESC/EAS Guidelines on lipids recommend more intensive reduction on LDL-C across CV risk categories in comparison with the 2016 edition.

Purpose

This cross-sectional observation study aims to assess whether patients on lipid lowering therapy, as a primary prevention measure, are aware of the new set goals and if they achieved them.

Methods

Patients, taking currently any statin as a primary prevention measure, visiting the Emergency Department of a tertiary hospital in northern Greece were invited to participate by answering a short questionnaire followed by a phone call to provide the exact lab results or other details.

Results

In total 412 eligible patients (54.1% female) were enrolled from January to October 2020 (mean age 61 ± 13 years old). Mean duration of statin prescription was about 8 years (7.8 ± 5 years). The majority (381, 92.5%) of patients reported lab tests yearly while most of them (394, 95.6%) were being followed up in outpatient clinics or private offices. Patients were allocated into CV categories: low (48, 11.7%), medium (239, 58.0%), high (108, 26.2%) and very high (17, 4.1%). The estimated 10-year risk of CV death was calculated using SCORE. Almost two thirds of the patients (282, 68.4%) were taking moderate intensity statins (as monotherapy) while one out of ten (45, 10.9%) was taking a statin plus ezetimibe combination. No patient was prescribed a PCSK9 inhibitor. Only two out of five (171, 41.5%) patients reached the LDL-C goal, though differences were noted between risk categories with almost half of the low and medium CV risk patients achieving the desired LDL-L level: low (23, 47.9%), medium (124, 51.9%), high (21, 19.4%) and very high (3, 17.6%). No significant difference was observed in terms of potency of statin. As expected, patients taking a statin and ezetimibe combination achieved lower LDL-C levels, with almost two thirds (31 out of 45 patients, 68.9%) reaching the goal. No information could be collected regarding why patients not reaching the goal were not offered a statin of higher potency and/or dosing, a combination with ezetimibe or a PCSK9 inhibitor. Disturbingly enough, none of the patient was aware that the LDL-C goals recommended by scientific societies had been lowered in 2019, while only 29 patients (7.0%) could recall discussing LDL-C goals with their physician. Moreover, merely three patients could remember the calculation of any CV risk score. The majority of the patients (379, 92.0%) reported that they would like to know their personal CV risk score and their LDL-C goal.

Conclusions

Greek primary prevention patients taking statins are overall unaware of the novel set LDL-C goals and it seems that they have not been offered a total CV risk score assessment. Hardly acceptable attainment of LDL-C goals was observed. Further research is warranted to assess the barriers that obstruct a satisfactory goal achievement.

Abstract Figure.

Attainment of the 2019 ESC/EAS recommended LDL-C goal in Greek patients with established atherosclerotic cardiovascular disease

Funding Acknowledgements

Type of funding sources: None.

Introduction

The novel 2019 ESC/EAS Guidelines on lipids recommend a more intensive reduction on LDL-C for patients with established atherosclerotic cardiovascular disease (ASCVD) in comparison with the 2016 edition.

Purpose

This cross-sectional observation study aims to assess whether patients on lipid lowering therapy, as a secondary prevention measure, are aware of the new set goals and if they achieved them.

Methods

Patients with known ASCVD, taking currently any statin, visiting the Emergency Department of a tertiary hospital in northern Greece were invited to participate by answering a short questionnaire followed by a phone call to provide the exact lab results or other details. Data were analyzed with the SPSS software version 20.0 for Windows (SPSS Inc., Chicago, Illinois, USA)

Results

In total 459 eligible patients (37.9% female) were enrolled from January to October 2020 (mean age 68 ± 12 years old). Mean duration of statin prescription was about 11 years (11.2 ± 6 years). The majority (431, 93.9%) of the patients reported lab tests yearly. The majority of the participants (406, 88.5%) were taking a statin as monotherapy of either low (11, 2.4%), medium (174, 37.9%) or high (221, 48.1%) potency. One tenth (50, 10.9%) were prescribed a combination of ezetimibe with a medium or high potency statin. Lastly, only three patients (0.7%) were prescribed a PCSK9 inhibitor. Approximately, one out of six patients had a LDL-C lower than 55mg/dL (78, 17.0%). As expected, the higher the potency of the statin, the higher the percentage of patients reaching the goal: low (1 of 11 patients, 9.1%), medium (21 of 174 patients, 12.1%) and high potency (45 of 221 patients, 20.4%). Moreover, nine out of the fifty the patients (18.0%) on ezetimibe combination therapy achieved the LDL-C goal. Lastly, two of the three patients (66.7%) on a PCSK9 inhibitor had attained the desired LDL-C level. No information could be collected regarding why patients not reaching the goal were not offered a statin of higher potency and/or dosing, a combination with ezetimibe or a PCSK9 inhibitor, accordingly. Disturbingly enough, none of the patient was aware that the LDL-C goals recommended by scientific societies had been lowered in 2019, although 71 patients (15.5%) could recall discussing LDL-C goals with their physician, even though none of the patients recalled the limit of 55mg/dL. The majority of the patients (427, 93.0%) reported that they would like to know their personal LDL-C goal.

Conclusions

Greek patients with established ASCVD taking statins are overall unaware of the novel set LDL-C goals. Hardly acceptable attainment of the LDL-C goal was observed. Further research is warranted to assess the barriers that obstruct a satisfactory goal achievement.

Abstract Figure. Patients achieving LDL-C goal

Preoperative cardiovascular assessment as an opportunity to (re)affirm the 2019 ESC/EAS guidelines recommended LDL-C goal

Funding Acknowledgements

Type of funding sources: None.

Introduction

The novel 2019 ESC/EAS Guidelines on lipids recommend a more intensive reduction on LDL-C across CV risk categories in comparison with the 2016 edition.

Purpose

This cross-sectional observation study aimed to assess whether patients on lipid lowering therapy were aware of the new set LDL-C goals and if they achieved them.

Methods

Patients, taking at the time any statin, attending the preoperative CV assessment outpatient clinic at a city hospital in northern Greece were invited to participate.

Results

In total 625 eligible patients (45.1% female) were enrolled during 2020 (mean age 67 ± 9 years old). Mean duration of statin prescription was about 10 years (9.7 ± 7 years). About two thirds of the patients (402, 64.3%) had established atherosclerotic cardiovascular disease (ASCVD) and the rest were allocated into CV risk categories: low (24, 10.8%), medium (135, 60.5%), high (59, 26.5%) and very high (5, 2.2%). The estimated 10-year risk of CV death was calculated using SCORE. The majority (552, 88.3%) of the patients reported lab tests at least biannually. The majority of the participants (556, 89.0%) were taking a statin as monotherapy of either low (17, 2.7%), medium (237, 37.9%) or high (302, 48.3%) potency. One tenth (65, 10.4%) were prescribed a combination of ezetimibe with a medium or high potency statin. Lastly, only four patients (0.6%) were prescribed a PCSK9 inhibitor. Less than a quarter of the participants (143, 22.9%) had achieved the recommended LDL-C levels. Approximately, one out of six patients with established ASCVD had a LDL-C lower than 55mg/dL (68, 16.9%), while only one out of three primary prevention patients (75, 33.6%) had reached the LDL-C levels recommended for their allocated risk category. As expected, the higher the potency of the statin, the higher the percentage of patients reaching the goal. Moreover, twelve out of the sixty five the patients (18.5%) on ezetimibe combination therapy achieved the LDL-C goal. Lastly, three of the four patients (75.0%) on a PCSK9 inhibitor had attained the desired LDL-C level. No information could be collected regarding why patients not reaching the goal were not offered a statin of higher potency and/or dosing, a combination with ezetimibe or a PCSK9 inhibitor, accordingly. Disturbingly enough, none of the patient was aware that the LDL-C goals recommended by scientific societies had been lowered in 2019, although 94 patients (15.0%) could recall discussing LDL-C goals with their physician. The majority of the patients (427, 93.0%) reported that they would like to know the recommended (personal) LDL-C goals.

Conclusions

Greek patients taking statins were overall unaware of the novel set LDL-C goals. Hardly acceptable attainment of the LDL-C goal was observed. The preoperative assessment visit can be used to monitor the guidelines implementation. Further research is warranted to assess the barriers that obstruct a satisfactory goal achievement.

Abstract Figure. Patients achieving LDL-C goal

Relationship between internal accuracy and load-bearing capacity of minimally invasive lithium disilicate occlusal veneers

PURPOSE

To test whether internal accuracy affects the load-bearing capacity of 0.5-mm-thick occlusal veneers made out of milled or heat-pressed lithium disilicate (LS2).

MATERIALS AND METHODS

Extracted human molars (N = 80) were divided into four groups (n = 20 each) depending on the bonding substrate (enamel [E] or dentin [D]) and the fabrication method (milling [CAD] or heat pressing [PRE]) for the occlusal LS2 veneers: (1) E-CAD, (2) D-CAD, (3) E-PRE, or (4) D-PRE. After restoration fabrication, the abutment teeth and the corresponding restorations were scanned and superimposed in order to measure the marginal and internal accuracy. After adhesive cementation, the specimens were thermomechanically aged and thereafter loaded until fracture. The load-bearing capacities (F_max) were measured. F_max and the marginal and internal accuracy between the groups were compared using Kruskal-Wallis test (P < .05) and pairwise group comparisons. In addition, the relationship between F_max and the internal accuracy was analyzed using Spearman rank correlation.

RESULTS

Median F_max values (and first and third quartiles) per group were as follows: 1,495 N (Q1: 932; Q3: 2'318) for E-CAD; 1,575 N (Q1: 1,314; Q3: 1,668) for E-PRE; 1,856 N (Q1: 1,555; Q3: 2,013) for D-CAD; and 1,877 N (Q1: 1,566; Q3: 2,131) for D-PRE. No statistical difference was found between the groups (P = .0981). Overall, the internal accuracy in the areas of the cusp (P < .0007) and fossa (P < .0001) showed significant differences. While no significant differences were detected in the marginal area (P = .3518), a significant correlation with a negative linear relationship was found between the 3D internal accuracy and the F_max values (P = .0007).

CONCLUSION

An increase in the internal accuracy raised the load-bearing capacity of minimally invasive LS2 occlusal veneers. In general, the restorations bonded to dentin in the occlusal regions showed a better accuracy compared to those bonded to enamel.

Discovering prescription patterns in pediatric acute-onset neuropsychiatric syndrome patients

OBJECTIVE

Pediatric acute-onset neuropsychiatric syndrome (PANS) is a complex neuropsychiatric syndrome characterized by an abrupt onset of obsessive-compulsive symptoms and/or severe eating restrictions, along with at least two concomitant debilitating cognitive, behavioral, or neurological symptoms. A wide range of pharmacological interventions along with behavioral and environmental modifications, and psychotherapies have been adopted to treat symptoms and underlying etiologies. Our goal was to develop a data-driven approach to identify treatment patterns in this cohort.

MATERIALS AND METHODS

In this cohort study, we extracted medical prescription histories from electronic health records. We developed a modified dynamic programming approach to perform global alignment of those medication histories. Our approach is unique since it considers time gaps in prescription patterns as part of the similarity strategy.

RESULTS

This study included 43 consecutive new-onset pre-pubertal patients who had at least 3 clinic visits. Our algorithm identified six clusters with distinct medication usage history which may represent clinician's practice of treating PANS of different severities and etiologies i.e., two most severe groups requiring high dose intravenous steroids; two arthritic or inflammatory groups requiring prolonged nonsteroidal anti-inflammatory drug (NSAID); and two mild relapsing/remitting group treated with a short course of NSAID. The psychometric scores as outcomes in each cluster generally improved within the first two years.

DISCUSSION AND CONCLUSION

Our algorithm shows potential to improve our knowledge of treatment patterns in the PANS cohort, while helping clinicians understand how patients respond to a combination of drugs.

High-throughput SARS-CoV-2 and host genome sequencing from single nasopharyngeal swabs

During COVID19 and other viral pandemics, rapid generation of host and pathogen genomic data is critical to tracking infection and informing therapies. There is an urgent need for efficient approaches to this data generation at scale. We have developed a scalable, high throughput approach to generate high fidelity low pass whole genome and HLA sequencing, viral genomes, and representation of human transcriptome from single nasopharyngeal swabs of COVID19 patients.

Insights in clinical examination and diagnosis of Athletic Pubalgia

Athletic pubalgia presents with groin and/or pubic pain mainly in athletes. The purpose of this review is to analyze, by evaluating current literature, the clinical examination and differential diagnosis of athletic pubalgia, in an effort to better understand this clinical entity. Diagnosis is challenging due to the anatomical complexity of the groin area, the biomechanics of the pubic Romasymphysis region and the large number of potential sources of groin pain. Clinical examination and medical history are of utmost importance. Differential diagnosis includes intra-and-extra-articular hip and intra-abdominal pathology, as well as non-myoskeletal disorders, such as femoroacetabular impingement (FAI), acetabular labral tears, osteitis pubis, adductor muscles injuries and true inguinal hernia. A thorough clinical examination should be performed in such cases, including the "Resisted sit-up" and the "Single or Bilateral Resisted Leg Adduction" test. Regarding imaging, Magnetic resonance imaging (MRI) should be performed when athletic pubalgia is suspected, especially in athletes. Other imaging techniques, such as plain radiographs and ultrasonography may add to the diagnostic process.

Antimicrobial resistance of Yersinia enterocolitica and presence of plasmid pYV virulence genes in human and animal isolates

Interactions between bacterial virulence and antimicrobial resistance are of increasing interest in clinical microbiology. On this account, antimicrobial resistance of Yersinia enterocolitica O:3 strains isolated from humans (n = 55), food-chain animals (n = 58) and companion animals (n = 13) was determined in relation to the absence or presence of the pYV plasmid-encoded virulence genes yadA and virF. There were no statistically significant associations between the rate of antimicrobial resistance and the presence or absence of the plasmid, in either human-derived or animal-derived strains. Therefore, it can be concluded that response to conventionally used antimicrobials in Y. enterocolitica O:3 strains is not dependent on pYV-encoded virulence determinants.

Mass of the neck: an extremely rare location of hydatid disease

Hydatid disease (HD) is a parasitic zoonosis which was first described by Hippocrates in the ancient years. Liver and lungs are the most commonly affected organs, while neck involvement is extremely rare. We report a case of a 75-year old male, who presented with an isolated right-side cervical mass. After clinical examination and screening tests, HD was diagnosed. Pre-operative and post-operative treatment with albendazole was administered and en-block surgical excision of the mass was performed. Histopathological examination of the specimen confirmed the diagnosis of HD. At one-year follow-up, the patient remained asymptomatic without any signs of recurrence. Although HD of the neck is an extremely rare entity, physicians should always include it in the differential diagnosis of neck masses.

Isolation of Aggregatibacter aphrophilus from bronchoalveolar lavage in a paediatric patient presenting with haemoptysis

We report a rare case of non–cystic fibrosis bronchiectasis accompanied by protracted infection with Aggregatibacter aphrophilus in a 12-year-old boy with haemoptysis.

Mesothelial cyst of the round ligament

Mesothelial cyst of the round ligament is a rare finding in females, with only a few cases reported so far. A case of a 25 year old female patient presenting with a palpable mass in her right inguinal region is presented. The preoperative investigation through ultrasound (U/S), computed tomography (CT) and magnetic resonance imaging (MRI) revealed the presence of an intraabdominal cystic lobular mass in the inguinal canal, in contact with the femoral vessels. The mass was excised and the diagnosis of a benign mesothelial cyst was made through pathological examination. Even though it is a rare condition, it is advisable that clinicians consider in the differential diagnosis when evaluating a non-reducible mass in the inguinal region of a female patient.

Combined Littre and Richter's femoral hernia: an extremely rare intra-operative finding

Littre hernia is defined as the herniation of a Meckel's diverticulum, while Richter's hernia is the herniation of a portion of the bowel wall. An extremely rare case of a combined Littre and Richter's femoral hernia is reported. An 82-year-old male presented at the emergency department with a painful golf ball-like mass at the right inguinofemoral region. With the diagnosis of incarcerated femoral hernia, he was urgently taken to the operating room. Intraoperatively, an incarcerated Littre, as well as a Richter's hernia were revealed. Enterectomy and side-to-side small bowel anastomosis were performed. The patient made an uneventful recovery. To the best of our knowledge, the present is the first report of a combined Littre and Richter's femoral hernia. Such findings should be reported to raise the awareness of surgeons for complicated cases. It is of utmost importance to have a high suspicion index for strangulated hernias, to minimize the time between admission and surgery.

Malakoplakia of the large intestine: an incidental extremely rare finding

Malakoplakia is a rare inflammatory disease, most commonly found in the urinary tract. It appears be related to a functional deficiency of macrophages, resulting in an inability to destroy digested bacteria and it is associated with various conditions that cause immunodeficiency. A rare case of malakoplakia of the colon in a healthy 68-year old male is presented. The patient underwent emergency surgery with colon resection and an end stoma with closure of the distal bowel (Hartmann's procedure), due to incarcerated ventral hernia and sigmoid-colon rupture. He underwent reversal of the Hartmann's procedure four months after the initial operation. The histological examination from the anastomotic rings revealed Michaelis-Gutmann bodies that are pathognomonic of malakoplakia. He received per os ciprofloxacin, bethanecol and ascorbic acid for 12 months. Follow-up endoscopy did not exhibit any signs of the disease. A case of a healthy patient presenting with malakoplakia without any underlying disease that causes immunodeficiency is extremely rare. Treatment of malakoplakia involves the eradication of microorganisms. Cholinergic agonists, such as bethanechol and ascorbic acid, as well as antimicrobial treatment with trimpethoprim/sulphamethoxazol and rifampicin are most commonly being used. Long-term antimicrobial treatment has been reported (6 months to 3 years).

Chlamydia pneumoniae infection and the risk of multiple sclerosis: a meta-analysis

We conducted a meta-analysis of studies comparing the presence of Chlamydia pneumoniae (Cpn) between multiple sclerosis (MS) patients and other neurological diseases patients or healthy controls. We identified 26 studies with 1332 MS patients and 1464 controls. Using random-effects methods, MS patients were found more likely to have detectable levels of Cpn DNA (OR = 3.216; 95% CI: 1.204, 8.585) in their cerebrospinal fluid, and intrathecally synthesized immunoglobulins (OR = 3.842; 95% CI: 1.317, 11.212), compared to other patients with neurological diseases. There is no evidence for increased levels of serum immunoglobulins (OR = 1.068; 95% CI: 0.745, 1.530), even though this result is confounded by the presence of studies using normal subjects as controls. Similarly, there is no evidence for association of immunoglobulins against Cpn in the cerebrospinal fluid (OR = 3.815; 95% CI: 0.715, 20.369). Up to 59.7% of the between-studies variability could be explained by the inappropriate matching of cases and controls for gender. In random-effects meta-regressions, adjusting for the confounding effect of gender differences results in stronger and statistically significant associations of MS with detectable levels of Cpn DNA, intrathecally synthesized immunoglobulins and immunoglobulins in the cerebrospinal fluid. Even though the presence of Cpn is clearly more likely in MS patients, these findings are insufficient to establish an etiologic relation.

Detecting the Hidden Properties of Immunological Data and Predicting the Mortality Risks of Infectious Syndromes

BACKGROUND

To extract more information, the properties of infectious disease data, including hidden relationships, could be considered. Here, blood leukocyte data were explored to elucidate whether hidden information, if uncovered, could forecast mortality.

METHODS

Three sets of individuals (n = 132) were investigated, from whom blood leukocyte profiles and microbial tests were conducted (i) cross-sectional analyses performed at admission (before bacteriological tests were completed) from two groups of hospital patients, randomly selected at different time periods, who met septic criteria [confirmed infection and at least three systemic inflammatory response syndrome (SIRS) criteria] but lacked chronic conditions (study I, n = 36; and study II, n = 69); (ii) a similar group, tested over 3 days (n = 7); and (iii) non-infected, SIRS-negative individuals, tested once (n = 20). The data were analyzed by (i) a method that creates complex data combinations, which, based on graphic patterns, partitions the data into subsets and (ii) an approach that does not partition the data. Admission data from SIRS+/infection+ patients were related to 30-day, in-hospital mortality.

RESULTS

The non-partitioning approach was not informative: in both study I and study II, the leukocyte data intervals of non-survivors and survivors overlapped. In contrast, the combinatorial method distinguished two subsets that, later, showed twofold (or larger) differences in mortality. While the two subsets did not differ in gender, age, microbial species, or antimicrobial resistance, they revealed different immune profiles. Non-infected, SIRS-negative individuals did not express the high-mortality profile. Longitudinal data from septic patients displayed the pattern associated with the highest mortality within the first 24 h post-admission. Suggesting inflammation coexisted with immunosuppression, one high-mortality sub-subset displayed high neutrophil/lymphocyte ratio values and low lymphocyte percents. A second high-mortality subset showed monocyte-mediated deficiencies. Numerous within- and between-subset comparisons revealed statistically significantly different immune profiles.

CONCLUSION

While the analysis of non-partitioned data can result in information loss, complex (combinatorial) data structures can uncover hidden patterns, which guide data partitioning into subsets that differ in mortality rates and immune profiles. Such information can facilitate diagnostics, monitoring of disease dynamics, and evaluation of subset-specific, patient-specific therapies.

Distribution of six effector protein virulence genes among Salmonella enterica enterica serovars isolated from children and their correlation with biofilm formation and antimicrobial resistance

PURPOSE

Salmonella enterica enterica encodes a variety of virulence factors. Among them, the type III secretion system (TTSS) encoded in the Salmonella pathogenicity islands (SPIs) is required for induction of proinflammatory responses, invasion of intestinal epithelial cells, induction of cell death in macrophages, and elicitation of diarrhea. The presence of the effector protein genes sopB, sopD, sopE, sopE2, avrA, and sptP of the SPIs was analyzed in 194 S. enterica enterica strains belonging to 19 serovars.

METHODS

S. enterica enterica strains were collected from children with gastroenteritis, either hospitalized or attending the outpatient clinic, aged 1-14 years. Nineteen different serotypes were included in the study. Serotyping, biofilm formation determination, and antimicrobial resistance of the planktonic as well as the biofilm forms of the strains have been reported previously.

RESULTS

At least one virulence gene was present in all Salmonella isolates. Biofilm formation was statistically independent of any of the six genes. Strains lacking sopE and sopE2 were more resistant to all the antimicrobials.

CONCLUSIONS

The association of the virulence genes with the antimicrobial resistance of Salmonella in general has been previously reported and is a matter of further investigation. For the clinical expression of pathogenicity in humans, the contribution of these genes is questionable, as some strains bearing only a single gene (either sptP or avrA) were still capable of causing gastroenteritis.

Surgical management of rectal prolapse

PURPOSE

Rectal prolapse is uncommon; however, the true incidence is unknown because of underreporting, especially in the elderly population. Full-thickness rectal prolapse, mucosal prolapse and internal prolapse are three different clinical entities, which are often combined and constitute rectal prolapse. The aim of the study is to present our experience in the surgical management of rectal prolapse.

METHODS

In a 6-year period (2004-2010), 27 patients were surgically treated for rectal prolapse. The majority of patients were women (25 women, two men) and their mean age was 72.36 years. The operations performed were two Delorme's procedures, five STARR (Stapled TransAnal Rectal Resection), 14 Wells procedures, two Wells combined with Thiersch, one Altemeier, one sigmoid resection combined with Wells and two Thiersch.

RESULTS

An emergency sigmoidostomy was performed on a patient after Wells operation due to obstructive ileus. One death occurred on the 5th postoperative day due to pulmonary embolism. Two recurrences observed 8 months postoperatively, one in a patient after STARR operation and one in a patient after Thiersch technique. The great majority of patients are completely relieved of symptoms.

CONCLUSIONS

The application of different modalities in the treatment of rectal prolapse is attributed to the fact that cause, degree of prolapse and symptoms, vary from one patient to another. Successful approach depends on many factors, including the status of a patient's anal sphincter muscle before surgery, whether the prolapse is internal or external and the overall condition of the patient.

Prospective clinical trial comparing sphincterotomy, nitroglycerin ointment and xylocaine/lactulose combination for the treatment of anal fissure

BACKGROUND

The aim of this study is to compare the ability of three treatments in patients with anal fissure, sphincterotomy, nitroglycerin ointment and combination of gel xylocaine and lactulose.

METHODS

Ninety adults divided in three groups of 30 patients each group, received one of the three treatments in a 3-year interval (2007-2009) and the follow-up was for 2 months. Group A received nitroglycerin ointment, Group B underwent sphincterotomy and Group C received gel xylocaine and lactulose.

RESULTS

Concerning pain, after treatment 60% of patients in Group A did not complain of pain, 20% had transient pain, another 10% moderate pain and the remaining 10% had severe pain. In Group B, 95% of the patients had no pain and only 5% had mild, transient pain. In Group C 60% of the patients had moderate pain and the other 40% suffered from severe pain. Concerning fissure healing, in 60% of the patients of Group A, the fissure was healed. In Group B fissure healed in 93.3% and in Group C only in 16.6% of the patients.

CONCLUSION

The "gold standard" for anal fissure treatment is the lateral internal sphincterotomy and that each one of the three methods has its advantages and disadvantages.

Comparative antimicrobial susceptibility of biofilm versus planktonic forms of Salmonella enterica strains isolated from children with gastroenteritis

In the present study, 194 Salmonella enterica strains, isolated from infected children and belonging to various serotypes, were investigated for their ability to form biofilms and the biofilm forms of the isolated strains were compared to their corresponding planktonic forms with respect to the antimicrobial susceptibility. For the biofilm-forming strains, the minimum inhibitory concentration for bacterial regrowth (MICBR) from the biofilm of nine clinically applicable antimicrobial agents was determined, and the results were compared to the respective MIC values of the planktonic forms. One hundred and nine S. enterica strains out of 194 (56%) belonging to 13 serotypes were biofilm-forming. The biofilm forms showed increased antimicrobial resistance compared to the planktonic bacteria. The highest resistance rates of the biofilm bacteria were observed with respect to gentamicin (89.9%) and ampicillin (84.4%), and the lowest rates with respect to ciprofloxacin and moxifloxacin (2.8% for both). A remarkable shift of the MICBR(50) and MICBR(90) toward resistance was observed in the biofilm forms as compared to the respective planktonic forms. The development of new consensus methods for the determination of the antimicrobial susceptibility of biofilm forms seems to be a major research challenge. Further studies are required in order to elucidate the biofilm antimicrobial resistance mechanisms of the bacterial biofilms and their contribution to therapeutic failure in infections with in vitro susceptible bacteria.

Patterns of ophthalmological complaints presenting to a dedicated ophthalmic Accident & Emergency department: inappropriate use and patients' perspective

OBJECTIVES

To investigate the appropriateness of patients attending an Accident & Emergency (A&E) department of an eye hospital, identify reasons for inappropriate use and propose recommendations in improving the provision of ophthalmic A&E care.

METHODS

A prospective questionnaire-based survey of consecutive patients who presented to the A&E department over a 7-day period was conducted. Patient demographic data, reason for attending from the patients' perspective, diagnosis, duration of symptom and management outcome were recorded. The diagnoses were grouped into acute and non-acute, and into those which were considered suitable to be seen in a primary care setting by specialist trained community general practitioners (GPs) or optometrists.

RESULTS

560 completed questionnaires were evaluated; 171 cases (30.6%) were considered as non-acute and 210 (37.5%) were considered suitable to be seen by specialist trained community GPs or optometrists. 352 patients (62.8%) had symptoms for 1-6 days, 144 (25.7%) had symptoms for 1-4 weeks and 64 (11.5%) had symptoms for >1 month before presentation; in the latter two groups, 52 of the 208 patients (25%) were diagnosed with non-acute conditions. "Great concern" was the most common reason for attending the casualty department. 350 patients (62.5%) were discharged on the day of presentation.

CONCLUSIONS

A significant number of patients who attend ophthalmic A&E departments have non-urgent conditions that could be managed satisfactorily in a primary care setting by specialist trained GPs or optometrists outside the hospital casualty department. Improvement in education of patients, the provision of specialist ophthalmic training for GPs and optometrists, and expansion of outpatient services are needed so that casualty remains a genuine emergency service.

Urrets-Zavalia syndrome as a complication of argon laser peripheral iridoplasty

OBJECTIVE

To report on 8 patients who developed prolonged mydriasis after argon laser peripheral iridoplasty (ALPI).

DESIGN

Retrospective case series.

METHODS

A review of the charts of 8 patients with persistent occludable angles after laser iridotomy who developed mydriasis after undergoing ALPI.

RESULTS

12 eyes of 8 patients (mean age 50.2, standard deviation 6.9, range 40-61 years) developed persistent dilatation. 7 of 8 patients had plateau iris syndrome. Only one patient had a decrease in visual acuity. Intraocular pressure increased only in 1 eye and remained stable or decreased in the others. Of the 8 patients, 7 had blurred vision, 2 had photophobia, 4 had glare and 1 had discomfort. The pupillary response to pilocarpine instillation was minimal or absent. Mydriasis eventually resolved in all eyes without treatment.

CONCLUSION

ALPI can be complicated by mydriasis unresponsive to pilocarpine. Mydriasis and accompanying symptoms resolved spontaneously within 1 year in most patients.

Traumatic Dislocation and Successful Re-enclavation of an Artisan Phakic IOL With Analysis of the Endothelium

PURPOSE

To present a case of traumatic dislocation of an Ophtec Artisan phakic intraocular lens (PIOL) and an analysis of the endothelial cell count.

METHODS

The patient presented with blurred vision in his left eye after sustaining a brow laceration. History included uncomplicated bilateral implantation of an Artisan PIOL to correct myopia.

RESULTS

The brow laceration was sutured and topical dexamethasone 0.1% qid was prescribed. One week after presentation, the PIOL was relocated. Postoperatively, endothelial cell count analysis was performed in both eyes.

CONCLUSIONS

A decrease in the hexagonality of the endothelial cells was noted in both eyes, which was substantially lower in the injured eye.

An unusual case of insomnia associated with Whipple encephalopathy: first case reported from Greece

Whipple disease is a relapsing systemic illness caused by Tropheryma whippelii. Central nervous system involvement occurs in 5%-40% of all patients. Hypothalamic manifestations occur in 31% of Whipple encephalopathy, including polydipsia, hyperphagia, change in libido and insomnia. We report a case of a 48-year-old man with severe insomnia, depression, dementia, dysarthria, myoclonic movements of the limbs and ophthalmoplegia. The diagnosis of Whipple encephalopathy was confirmed by PCR analysis of blood and faeces. He received a full dose of antibiotic treatment. Despite clinical improvement, resolution of the lesions detected in MRI scan of the brain and negative results of the PCR in blood, faeces and cerebrospinal fluid six months later, insomnia persisted and finally subsided after the administration of carbamazepine (600 mg/day). Our case supports the finding that carbamazepine might be useful in the treatment of insomnia associated with Whipple encephalopathy.

A combination therapy of dexamethasone and somatostatin analog reintroduces objective clinical responses to LHRH analog in androgen ablation-refractory prostate cancer patients

We evaluated whether the combination of triptorelin, a LHRH analog (LHRH-A), with dexamethasone and lanreotide, a somatostatin analog, can produce objective clinical responses in metastatic androgen ablation-refractory prostate cancer (stage D3) patients who have relapsed, after combined androgen blockade (LHRH-A plus antiandrogen) and antiandrogen withdrawal. Eleven stage D3 patients with diffuse bony metastases, who had progressed despite initial responses (lasting <12 months) to combined androgen blockade therapy and subsequently failed antiandrogen withdrawal, received oral dexamethasone (4 mg daily for the first month, tapered down to 2 mg after the first month and 1 mg after the second month, and continued on 1 mg thereafter) and lanreotide (30 mg im every 14 d) in combination with triptorelin (3.75 mg im every 28 d). Serum prostate-specific antigen, alkaline phosphatase, performance status, and bone pain were assessed monthly during therapy. Fasting blood glucose was measured biweekly, and serum IGF-I, T, and dehydroepiandrosterone sulfate levels were assessed at baseline, at response to the combination therapy, and at relapse from it. Ten of 11 stage D3 patients [90.9% of patients; 95% confidence interval (CI), 58.7-99.8%] had durable objective clinical responses (including > or = 50% prostate-specific antigen decline in 8 patients, 72.7%; 95% CI, 39-94%). All patients reported significant and durable improvement of bone pain (for a median duration of 13 months; 95% CI, 12-14 months; range, 6-22 months) and performance status (median duration, 19 months; 95% CI, 13-25 months; range, 7-22 months) without major treatment-related side effects. The median progression-free survival was 7 months (95% CI, 4-10 months; range, 3-17 months), and the median overall survival was 18 months (95% CI, 16-20 months; range, 7-22 months). Five of six total deaths occurred secondary to disease progression. We observed a statistically significant (P = 0.018) reduction in serum IGF-I levels at response to the combination therapy (60% reduction of baseline IGF-I levels). Dehydroepiandrosterone sulfate levels, although already significantly suppressed at baseline, had an additional significant reduction (P < 0.02) at response to therapy. T levels remained suppressed within castration levels (<3 nmol/liter, at baseline and throughout therapy, including relapse). The combination therapy of LHRH-A with dexamethasone plus somatostatin analog produces objective clinical responses and symptomatic improvement in androgen ablation (LHRH-A) refractory prostate cancer patients.

Conversion of nested reverse-transcriptase polymerase chain reaction from positive to negative status at peripheral blood during androgen ablation therapy is associated with long progression-free survival in stage D2 prostate cancer patients

BACKGROUND

Nested reverse-transcriptase polymerase chain reaction (nested rt-PCR) for the detection of mRNA of prostate specific antigen (PSA) and prostate specific membrane antigen (PSMA) in peripheral blood samples (PB) and bone marrow biopsies (BM) can assess the extraprostatic growth of prostate cells.

MATERIALS AND METHODS

Nested rt-PCR for PSA and PSMA at PB and BM was performed (a) at diagnosis, (b) after 6 months from the initiation of combined androgen blockade [(CAB); triptorelin 3.75 mg, i.m., q28 days plus flutamide 250 mg, per os, tid] and, (c) at progression to androgen refractory stage in 28 patients with newly-diagnosed stage D2 prostate cancer.

RESULTS

At diagnosis, all patients were found to be rt-PCR positive for PSA and PSMA at BM while 7 (25%) were rt-PCR negative for PSA and PSMA at PB. Nine out of 21 patients with rt-PCR-positive status have converted to rt-PCR-negative status at PB during CAB while they remained rt-PCR-positive at BM. The rt-PCR-negative status at PB during CAB was associated with progression-free survival >12 months (p=0.029). At progression to androgen refractory stage all but 2 patients were rt-PCR-positive at PB for PSA and PSMA, among them 3 who were rt-PCR-negative at diagnosis.

CONCLUSION

Our data suggest that conversion to rt-PCR-negative status at PB for PSA and PSMA during objective clinical response to CAB is associated with long progression-free survival in stage D2 disease.