Publications by authors named "Jazib Hussain"

2 Publications

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Eclampsia and posterior reversible encephalopathy syndrome (PRES): A retrospective review of risk factors and outcomes.

Qatar Med J 2021 16;2021(1). Epub 2021 Feb 16.

Department of Obstetrics and Gynecology, AlKhor Hospital, Hamad Medical Corporation, Qatar.

Posterior reversible encephalopathy syndrome (PRES) is a clinical and radiological entity initially described in 1996. PRES frequently develops in patients with preeclampsia and eclampsia. There is not much literature on risk factors causing PRES in pregnant patients with eclampsia. This study aimed to determine the incidence of PRES in eclampsia, its association with pregnancy, risk factors, and maternal and perinatal outcomes.

Patients And Methods: All patients who were admitted with eclampsia and developed PRES in an intensive care unit of a tertiary medical facility between 1997 and 2017 were included in the study. Patients' demographics, pregnancy and gestational data, treatment mode, and outcomes were retrospectively obtained from their medical charts/files. Data were entered using SPSS program version 23. Chi-square test was used to compare the variables, and a value of < 0.05 was considered statistically significant.

Results: A total of 151 patients were admitted during the study period, and 25 developed PRES. The diagnosis was common in patients older than 25 years. Eclampsia patients who developed PRES were without any pregnancy-associated comorbidities ( < 0.08). At the time of diagnosis, their gestational age was more than 36 weeks, which was significant ( < 0.04). Incidence was significantly higher in patients presenting with eclampsia and had recurrent seizures ( < 0.01 and 0.002, respectively). Its incidence was significantly higher in postpartum eclampsia patients ( < 0.01). It was also significantly higher in patients who had cesarean section and hypertension treated with labetalol ( < 0.001 and 0.02, respectively). Overall, the maternal mortality rate of eclampsia patients complicated with PRES was 4% in our population.

Conclusion: Of eclampsia patients, 16% developed PRES, which is on the lower side than the reviewed literature (10%-90%). Eclampsia on presentation, recurrent seizures, postpartum eclampsia, cesarean delivery, and labetalol use were associated with increased risk of PRES development.
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February 2021

Genetic insights into biological mechanisms governing human ovarian ageing.

Nature 2021 08 4;596(7872):393-397. Epub 2021 Aug 4.

Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.

Reproductive longevity is essential for fertility and influences healthy ageing in women, but insights into its underlying biological mechanisms and treatments to preserve it are limited. Here we identify 290 genetic determinants of ovarian ageing, assessed using normal variation in age at natural menopause (ANM) in about 200,000 women of European ancestry. These common alleles were associated with clinical extremes of ANM; women in the top 1% of genetic susceptibility have an equivalent risk of premature ovarian insufficiency to those carrying monogenic FMR1 premutations. The identified loci implicate a broad range of DNA damage response (DDR) processes and include loss-of-function variants in key DDR-associated genes. Integration with experimental models demonstrates that these DDR processes act across the life-course to shape the ovarian reserve and its rate of depletion. Furthermore, we demonstrate that experimental manipulation of DDR pathways highlighted by human genetics increases fertility and extends reproductive life in mice. Causal inference analyses using the identified genetic variants indicate that extending reproductive life in women improves bone health and reduces risk of type 2 diabetes, but increases the risk of hormone-sensitive cancers. These findings provide insight into the mechanisms that govern ovarian ageing, when they act, and how they might be targeted by therapeutic approaches to extend fertility and prevent disease.
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August 2021