Characteristics and Outcomes of Pregnant Women with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in New York City: A Matched Cohort Study.

OBJECTIVE: The aim of this study was to examine the association between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and preterm birth, cesarean birth, and composite severe maternal morbidity by studying women with and without SARS-CoV-2 infection at the time of delivery hospitalization from similar residential catchment areas in New York City. STUDY DESIGN: This was a retrospective cohort study of pregnant women with laboratory-confirmed or laboratory-denied SARS-CoV-2 on nasopharyngeal swab under universal testing policies at the time of admission who gave birth between March 13 and May 15, 2020, at two New York City medical centers. Demographic and clinical data were collected and follow-up was completed on May 30, 2020. Groups were compared for the primary outcome and preterm birth, in adjusted (for age, race/ethnicity, nulliparity, body mass index) and unadjusted analyses. RESULTS: Among this age-matched cohort, 164 women were positive and 247 were negative for SARS-CoV-2. Of the positive group, 52.4% were asymptomatic and 1.2% had critical coronavirus disease 2019 (COVID-19). The groups did not differ by race and ethnicity, body mass index, or acute or chronic comorbidities. Women with SARS-CoV-2 were more likely to be publicly insured. Preterm birth, cesarean birth, and severe maternal morbidity did not differ between groups. Babies born to women with SARS-CoV-2 were more likely to have complications of prematurity or low birth weight (7.7 vs. 2%, p = 0.01). CONCLUSION: Preterm and cesarean birth did not differ between women with and without SARS-CoV-2 across disease severity in adjusted and unadjusted analysis among this cohort during the pandemic peak in New York City.

Examination of a novel head-stalk protein family in Giardia lamblia characterised by the pairing of ankyrin repeats and coiled-coil domains.

The intestinal pathogen Giardia lamblia possesses several unusual organelle features, including two equivalent nuclei, no mitochondria or peroxisomes, and a developmentally regulated rough endoplasmic reticulum and Golgi. Giardia also possesses a number of complex and unique cytoskeleton structures that dictate cell shape, motility and attachment. Our investigations of cytoskeletal proteins have revealed the presence of a new protein family. Proteins in this family contain both ankyrin repeats and coiled-coil domains; although these are common protein motifs, their pairing is unique, thus establishing a new class of head-stalk proteins. Examination of the G. lamblia genome shows evidence for at least 18 genes coding for proteins with a series of ankyrin repeats followed by a lengthy coiled-coil domain and at least an additional 14 genes coding for proteins with a prominent coiled-coil domain flanked by two series of ankyrin repeats. We have examined one of these proteins, Giardia Axoneme Associated Protein (GASP-180), in detail. GASP-180 is a 180 kDa protein containing five ankyrin repeats in a 200 amino acid N-terminal domain separated by a short spacer from an approximately 1375 amino acid coiled-coil domain. Using anti-peptide antibodies raised against a unique 20 amino acid sequence found at the C-terminus, we have determined that GASP-180 is present in cytoskeleton extractions of the parasite and localises to the proximal base of the anterior flagellar axonemes. The combination of the localisation and the structural and functional motifs of GASP-180 make it a strong candidate to participate in control of flagellar activity.