Breaking News
December 10, 2018 - Scientists find answers to how cancer spreads
December 10, 2018 - Study explores why older people read more slowly
December 10, 2018 - Asbestos found in most NHS hospitals finds BBC inquiry
December 10, 2018 - Researchers use new technique to probe hydrogen bonds
December 10, 2018 - Music improves social communication in autistic children
December 10, 2018 - Some Brain Tumors May Respond to Immunotherapy, New Study Suggests
December 10, 2018 - Banning junk food ads to combat childhood obesity
December 10, 2018 - Skin Autofluorescence Predicts T2DM, Heart Disease, Mortality
December 10, 2018 - Largest autism sequencing study to date yields 102 genes associated with ASD
December 10, 2018 - Statins associated with low risk of side effects
December 10, 2018 - Study explores how schools address adolescent self-harming practices
December 10, 2018 - Pregnancy in adolescence linked to increased risks of complications in young mothers
December 10, 2018 - Risk Analysis publishes special issue on communicating about Zika virus
December 10, 2018 - Botox May Help Prevent Post-Op A-Fib
December 10, 2018 - African-American mothers rate boys higher for ADHD
December 10, 2018 - Graphic warning labels cancel out cigarettes’ appeal to young people
December 10, 2018 - Australian researchers to study gas inhalational anaesthetic and likelihood of cancer return
December 10, 2018 - Individual neurons located within the brain have implications for psychiatric diseases
December 10, 2018 - Researchers improve bariatric surgery scoring system to extend prediction time for diabetic remission
December 10, 2018 - HPV type 16 or 18 associated with cervical cancer risk in young women
December 10, 2018 - Cervical cancer risk is higher in women with positive HPV, but no cellular abnormalities
December 10, 2018 - Combo therapy not needed if low RA disease activity achieved
December 10, 2018 - Novel therapeutic targets based on biology of aging show promise for Alzheimer’s disease
December 10, 2018 - UC San Diego professor receives NCI Outstanding Investigator Award for cancer research
December 10, 2018 - Study evaluates placental mesenchymal stem cell sheets for myocardial repair and regeneration
December 10, 2018 - Blueprint Medicines Announces Updated Results from Ongoing EXPLORER Clinical Trial of Avapritinib Demonstrating Broad Clinical Activity and Significant Symptom Reductions in Patients with Systemic Mastocytosis
December 10, 2018 - Study clarifies ApoE4’s role in dementia
December 10, 2018 - Eating disorders now a top priority with Australian Government
December 10, 2018 - Neuronal activity in the brain allows prediction of risky or safe decisions
December 10, 2018 - FDA Alerts Health Care Professionals and Patients Not to Use Drug Products Intended to be Sterile from Promise Pharmacy
December 10, 2018 - Improving dementia care and treatment saves thousands of pounds in care homes
December 10, 2018 - Heroin-assisted treatment can offer benefits, reduce harms
December 10, 2018 - People covered by Michigan’s expanded Medicaid program report improvements in health, finds study
December 10, 2018 - Hazelnuts improve micronutrient levels in older adults
December 9, 2018 - History of Partner Violence Tied to Menopause Symptoms
December 9, 2018 - Clean Up Safely After a Disaster|Natural Disasters and Severe Weather
December 9, 2018 - Drug wholesalers drove fentanyl’s deadly rise, report concludes
December 9, 2018 - Deprescribing could help manage polypharmacy in older adults
December 9, 2018 - Retraction of article “Joy of cooking too much” from journal
December 9, 2018 - FDA Warns of Rare Stroke Risk With MS Drug Lemtrada (Alemtuzumab)
December 9, 2018 - Feds say heroin, fentanyl remain biggest drug threat to US
December 9, 2018 - Eliminating microglia can reverse some aspects of stress sensitization, study shows
December 9, 2018 - New genetic insight could help treat rare debilitating heart and lung condition
December 9, 2018 - MiRagen Therapeutics Announces Final Safety, Biodistribution and Clinical Efficacy Data From Phase 1 Cobomarsen Clinical Trial in Patients With Mycosis Fungoides
December 9, 2018 - Work with your doctor to weigh pros, cons of treatment options for hyperthyroidism
December 9, 2018 - CWRU researcher secures $14.6 million funding for genetic study into Alzheimer’s disease
December 9, 2018 - High intensity statin treatment and adherence could save more lives
December 9, 2018 - Surgery patients use only 1/4 of prescribed opioids, and prescription size matters
December 9, 2018 - AXT offers Phi Optics upgrade to QPI systems for inverted light microscopes
December 9, 2018 - New booklet could help improve conditions of young pupils with albinism
December 9, 2018 - Few Physicians Work in Practices That Use Telemedicine
December 9, 2018 - Older Adults and Oral Health
December 9, 2018 - Health utility values improve after septorhinoplasty
December 9, 2018 - New EU-funded project provides insight into how the brain develops
December 9, 2018 - Expanded use of tele-emergency services can help strengthen rural hospitals
December 9, 2018 - Infections in the Young May Be Tied to Risk for Mental Illness: Study
December 9, 2018 - Profile: Native Hawaiians and Pacific Islanders
December 9, 2018 - Snoring poses greater cardiac risk to women
December 9, 2018 - Researcher takes further steps in understanding how and why cute aggression occurs
December 9, 2018 - Researchers create new light-activated tools for controlling neurons
December 9, 2018 - Spinal cord injury disrupts the body’s internal clock, study shows
December 9, 2018 - Babies recognize nested structures similar to our grammar
December 9, 2018 - UT Austin researcher receives $2.5 million CZI grant for neurodegenerative disease research
December 9, 2018 - Sleep problems found to be prevalent and increasing among college students
December 9, 2018 - Study reveals why some children are susceptible to the effects of maltreatment
December 9, 2018 - Study investigates influence of different opioids on driving performance
December 9, 2018 - Jazz Pharmaceuticals Announces First Patient Enrolled in Phase 3 Clinical Trial Evaluating JZP-258 for the Treatment of Idiopathic Hypersomnia
December 9, 2018 - Eliminating microglia prevents heightened immune sensitivity after stress
December 9, 2018 - Boys with social difficulties are at greatest risk of early substance use
December 9, 2018 - ‘Wrong’ connective tissue cells linked to worse prognosis in breast cancer patients
December 8, 2018 - Chronic, refractory schizophrenia patients benefit from targeted cognitive training
December 8, 2018 - Advertising in kids’ apps more prevalent than parents may realize
December 8, 2018 - New way to trace the transmission histories of rare genetic diseases
December 8, 2018 - ASH: A+CHP Bests CHOP for Peripheral T-Cell Lymphoma
December 8, 2018 - Results of pediatric genomic epilepsy tests often reclassified
December 8, 2018 - New way of controlling HIV latency to completely eradicate the virus
December 8, 2018 - Phasefocus to showcase the Livecyte 2 at ASCB
December 8, 2018 - KHN’s ‘What the Health?’ Is health spending the next big political issue?
December 8, 2018 - Mussels take in microplastic pollution fibers and flush most of them out again
December 8, 2018 - AHA: How to Stop Smoking … for Good
RNAi therapy shown to alleviate preeclampsia

RNAi therapy shown to alleviate preeclampsia

image_pdfDownload PDFimage_print

A study led by researchers at the University of Massachusetts Medical School has used a small interfering RNA (siRNA) to reduce preeclampsia symptoms in an animal model. This approach could provide a new way of treating preeclampsia in humans.

By Hakat

Hakat | Shutterstock

At around 20 weeks of pregnancy, women with preeclampsia develop high blood pressure and excess protein in the urine (proteinuria).

If the condition is severe, blood platelet counts fall, red blood cells break down, kidney and liver function becomes impaired and the lungs fill with fluid, causing breathing difficulties and posing a risk to both mother and baby.

The symptoms of preeclampsia are the result of a defect in the placenta that is associated with increased circulating levels of a protein called sFLT1, which serves as an on/off switch for the inhibition of new blood vessel growth.

Currently, preeclampsia cannot be cured or adequately treated and the only therapeutic option is to give birth to the baby and pass the placenta.

Professor of RNA therapeutics and study leader Anastasia Khvorova says that for women with preeclampsia, being able to carry their baby for just a few more weeks has a significant benefit in terms of health outcomes for the baby:

Thanks to rapid advances in siRNA, we’ve developed an siRNA that displays the potential to allow women with preeclampsia to extend their pregnancy from 24 or 25 weeks to as long as 30 weeks, greatly improving outcomes for the infant.”

Professor Anastasia Khvorova, Study Leader

As reported in the journal Nature Biotechnology, the researchers used the siRNA to reduce blood levels of sFLT1 in pregnant mice.

By using the compounds to target and degrade some of the messenger RNAs needed to code for the protein, the team reduced circulating levels of sFLT1 by up to 50%.

In collaboration with researchers at Sydney University Medical School, the researchers then tested the strategy in pregnant baboons, an established animal model for preeclampsia in humans. They found that just one injection of siRNA decreased circulating sFLT1 and reduced high blood pressure and proteinuria.

Khvorova says that six years ago this would not have been possible and that scientific advances enabling the chemical stabilization and production of siRNAs so that they can be delivered to tissues has led to rapid advances in these compounds: “The preeclampsia compounds we are developing are an example of what siRNA can do and how far they’ve come.”

The next step for researchers will be to secure funding for studies to further optimize the configuration of these compounds and to test their safety before approaching the U.S Food and Drug Administration for an investigational new drug application.

Source:

RNAi therapy mitigates preeclampsia symptoms in UMass Medical School study.

Tagged with:

About author

Related Articles