Impact of the COVID-19 pandemic on maternal mental health during pregnancy: The CONCEPTION study – Phase I

Introduction

Mental health regional differences during pregnancy through the COVID-19 pandemic is understudied.

Objectives

We aimed to quantify the impact of the COVID-19 pandemic on maternal mental health during pregnancy.

Methods

A cohort study with a web-based recruitment strategy and electronic data collection was initiated in 06/2020. Although Canadian women, >18 years were primarily targeted, pregnant women worldwide were eligible. The current analysis includes data on women enrolled 06/2020-11/2020. Self-reported data included mental health measures (Edinburgh Perinatal Depression Scale (EPDS), Generalized Anxiety Disorders (GAD-7)), stress. We compared maternal mental health stratifying on country/continents of residence, and identified determinants of mental health using multivariable regression models.

Results

Of 2,109 pregnant women recruited, 1,932 were from Canada, 48 the United States (US), 73 Europe, 35 Africa, and 21 Asia/Oceania. Mean depressive symptom scores were lower in Canada (EPDS 8.2, SD 5.2) compared to the US (EPDS 10.5, SD 4.8) and Europe (EPDS 10.4, SD 6.5) (p<0.05), regardless of being infected or not. Maternal anxiety, stress, decreased income and access to health care due to the pandemic were increasing maternal depression. The prevalence of severe anxiety was similar across country/continents. Maternal depression, stress, and earlier recruitment during the pandemic (June/July) were associated with increased maternal anxiety.

Conclusions

In this first international study on the impact of the COVID-19 pandemic, CONCEPTION has shown significant country/continent-specific variations in depressive symptoms during pregnancy, whereas severe anxiety was similar regardless of place of residence. Strategies are needed to reduce COVID-19’s mental health burden in pregnancy.

Disclosure

No significant relationships.

O79: THE ROLE OF SENTINEL LYMPH NODE BIOPSY IN BREAST CANCER PATIENTS OVER THE AGE OF 80 – HOW MUCH IS ENOUGH?

Introduction

Recent studies have suggested that sentinel lymph node biopsy (SLNB) can be omitted in newly diagnosed elderly breast cancer (BC) patients as it may not influence decisions regarding further therapeutic intervention. The aim of this study was to assess the impact of SLNB on further surgical intervention as well as adjuvant treatments in patients over the age of 80.

Method

A retrospective study was performed involving all BC patients over the age of 80 diagnosed between 2008 and 2017 who underwent SLNB as part of their initial surgery. Patient/tumour characteristics and adjuvant treatments were recorded.

Result

127 patients underwent SLNB in the study period. The median age was 82 (Range: 80-95). 91/127 (71.6%) had ductal pathology, median tumour grade was 2, and oestrogen receptor positivity was seen in 89% of patients. The median number of sentinel nodes removed was 2 (Range: 1-6). 45 patients (35.4%) had a positive sentinel node (median positive nodes = 1). Of the 45 patients, 11 proceeded to axillary lymph node dissection (ALND) (11/127; 8.6%). The median number of nodes excised during ALND was 14 (Range:7-25) and 6 patients (6/11) had further positive nodes. 9% of patients with a positive node received adjuvant chemotherapy, 87% received adjuvant radiotherapy and 79% received hormonal therapy.

Conclusion

Although SLNB positivity is still used in the elderly patients, only a few patients (&lt;10%) proceed to ALND or receive adjuvant chemotherapy. Hence performing a SLNB should be carefully considered when treating patients over the age of 80

Take-home message

The use of SLNB in elderly patients needs to be considered in node negative patients

Cooperative effects of matrix metalloproteinase and cyclooxygenase-2 inhibition on intestinal adenoma reduction

Matrix metalloproteinases (MMPs) and cyclooxygenase-2 (COX-2) are expressed in both sporadic and familial adenomatous colonic polyps and tumours and have been independently shown to play causal roles in intestinal tumour formation in mouse models of colon cancer. The apparent roles of these enzymes in intestinal tumorigenesis led us to examine, in the Min mouse model of colon cancer, if selective COX-2 and MMP inhibitors provide additive or synergistic therapeutic benefits in intestinal tumour prevention. The broad-spectrum MMP inhibitor (A-177430; MMPI) and the selective COX-2 inhibitor (A-285969; COX-2I) both showed dose-dependent inhibition of the number of adenomas in Min mice. Using suboptimal doses, the MMPI reduced tumour multiplicity by 32%, the COX-2I by 48% and, both agents in combination resulted in a 67% decrease compared to control demonstrating a cooperative effect on intestinal tumorigenesis. Apoptosis, proliferation, and angiogenesis were assayed in tumors from each treatment group. These agents in combination allowed for a lowered dosage to be administered to achieve significant biological effects. Clinically, this could potentially reduce side effects associated with currently used MMP and COX-2 inhibitors. Together, these compounds could represent an easily tolerated chemopreventive approach.

Prevention of experimental allergic encephalomyelitis by an antibody to CD45RB

CD45 is involved in the regulation of lymphocyte activation, and it has been demonstrated that ligation of CD45 induces apoptosis of T and B lymphocytes. Recently anti-CD45RB antibody therapy was shown to block acute allograft rejection in a mouse model of transplantation. Therefore, we wanted to examine the effects of anti-CD45RB antibody treatment on the course of an autoimmune disorder, experimental allergic encephalomyelitis (EAE), a Th1-mediated process. Mice immunized with myelin basic protein and treated with anti-CD45RB antibody did not develop EAE. Histologically, there was no evidence of lymphocytic infiltrates in the central nervous system. T cell proliferation and TNF-alpha production were significantly decreased in anti-CD45RB-treated mice. Furthermore, there was a significant reduction in the production of other Th1 cytokines including interferon-gamma and IL-2, but not IL-4 or IL-6. However, levels of a number of adhesion markers or markers of activation such as VLA-4 and LFA-1 on T cells were no different in treated versus control animals. Thus, anti-CD45RB can prevent EAE and appears to do so by altering T cell proliferation and cytokine production.

Effects of exercise on the signal-averaged electrocardiogram in coronary artery disease

The effects of exercise on the signal-averaged electrocardiogram (SAECG) were investigated in 52 patients with stable coronary artery disease. The SAECG was recorded before and immediately after the exercise test and analyzed at 25 to 250 Hz and 40 to 250 Hz. All patients had SAECG with noise level less than or equal 0.8 microV at 25 Hz and less than or equal to 0.6 microV at 40 Hz and with the difference in noise level between control SAECGs and SAECGs after exercise less than or equal to 0.2 to 0.3 microV. Twenty-eight patients developed ST changes consistent with transient subendocardial ischemia that persisted during the SAECG recording after exercise. There was no significant difference between control SAECGs and SAECGs after exercise in patients with or without a positive exercise test. The absence of significant change on the SAECG was not related to the presence or absence of prior myocardial infarction, site of infarction, development of exercise-induced ventricular arrhythmias or presence of an abnormal recording at baseline. These data suggest that exercise-induced electrophysiologic changes and ventricular arrhythmias may not be related to the anatomic-electrophysiologic substrate that underlies late potentials on the SAECG.