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Category: biotech/medical – Page 2727

This makes me a little nervous because pathways are very fragile and just the smallest change can result is some very bad/ even devastating results in other areas of the brain/ body.

Alzheimer’s remains one of the costliest yet most mysterious conditions in the United States, where an estimated 5.1 million Americans are living with the incurable, progressive disease. But researchers at The Rockefeller University have found that manipulating a protein pathway linked with Alzheimer’s helped improve memory impairment in mice— a finding that offers hope for new treatment in humans. Memory loss is the hallmark symptom of the disease.

Scientists with the Fisher Center for Alzheimer’s Research Foundation at The Rockefeller University used a complex set of imaging technologies and experiments to identify an early trafficking protein pathway (COPI) that affects amyloid precursor protein (APP), which precedes the formation of amyloid plaques. Previous research on Alzheimer’s have targeted this plaque, but scientists haven’t successfully identified a way to halt its progression. There is currently no cure or effective treatment for the disease.

Alzheimer’s Disease Mortality by State | HealthGrove.

Continue reading “Interfering with brain pathway early could improve memory in Alzheimer’s patients” | >

Nice

The consumer version of Google Glass smart wearable probably won’t be coming to the market anytime soon, but it seems like the project is far from dead. Namely, one of the startups which came to being after Google originally revealed its hi-tech headset several years ago is now raising new capital in order to bring Google’s optical head-mounted display into more hospitals and other health care facilities. The company in question is Augmedix, one of the ten official “Google Glass for Work” partners. Its main activity is developing software for wearable devices utilized in the medical industry, i.e. co-developing inventions which should make doctors’ lives easier. As Augmedix’s CEO Ian Shakil puts it, the doctors are “engaging with patients in front of them” while his company’s inventions are taking care of the “burdensome work in the background”.

Augmedix managed to raise $17 million of strategic investment capital from five institutions: TriHealth Inc., Sutter Health, Catholic Health Initiatives, Dignity Health, and a fifth, yet unnamed entity. This is the second round of funding the Silicon Valley company managed to secure in just over a year after raising $16 million in 2015. In total, the groups which financed Augmedix’s endeavors represent more than 100,000 health care providers. Naturally, the company can’t yet aim to deliver 100,000 of smart wearables designed for the medical industry, but it’s slowly getting there. Specifically, it’s currently providing equipment and services to hundreds of physicians and surgeons and is hoping to do the same with “thousands” more by 2017. No concrete figures have been provided by Augmedix, though the startup did confirm that it’s currently achieving a “multi-million dollar revenue” on a yearly basis.

What does this all mean for Google Glass? Well, despite the plans for the consumer version of the headset being momentarily dropped by Google, the Work program designed to deliver the said piece of hardware to various industries around the world is still going strong, and Augmedix is one of Google’s key partners in this business endeavor. Google Glass 2.0, officially called Project Aura is currently in development for enterprise applications and it seems like it has a very bright future in the medical industry as Augmedix claims its internal study concluded that close to 100 percent of patients are completely fine with their doctors using augmented reality (AR) headsets. In addition to that, it’s worth noting that Glass is the dominant platform Augmedix sells its services on, so it makes sense that this latest round of funding will see it end up in more heath care facilities in the very near future.

Continue reading “New Funding Could Bring Google Glass To More Hospitals” | >

In a new study, researchers detail the culturing and transfecting of cells with genetic material on an array of carbon nanotubes, which appears to overcome the limitations of other gene editing technologies.

Gene editing techniques hold great promise. They allow targeted and specific edits of genes, and have nearly limitless possibilities in the field of medicine.

Which is not to say that they are perfect. These techniques still have a range of limitations, from precision to toxicity. But a new study shows that can be changed.

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Sharing for fellow researchers and others who have interest in GBM news.

Glioblastoma (GBM) is the most common primary malignant brain tumor in adults and is uniformly lethal. T-cell-based immunotherapy offers a promising platform for treatment given its potential to specifically target tumor tissue while sparing the normal brain. However, the diffuse and infiltrative nature of these tumors in the brain parenchyma may pose an exceptional hurdle to successful immunotherapy in patients. Areas of invasive tumor are thought to reside behind an intact blood brain barrier, isolating them from effective immunosurveillance and thereby predisposing the development of “immunologically silent” tumor peninsulas. Therefore, it remains unclear if adoptively transferred T cells can migrate to and mediate regression in areas of invasive GBM. One barrier has been the lack of a preclinical mouse model that accurately recapitulates the growth patterns of human GBM in vivo. Here, we demonstrate that D-270 MG xenografts exhibit the classical features of GBM and produce the diffuse and invasive tumors seen in patients. Using this model, we designed experiments to assess whether T cells expressing third-generation chimeric antigen receptors (CARs) targeting the tumor-specific mutation of the epidermal growth factor receptor, EGFRvIII, would localize to and treat invasive intracerebral GBM. EGFRvIII-targeted CAR (EGFRvIII+ CAR) T cells demonstrated in vitro EGFRvIII antigen-specific recognition and reactivity to the D-270 MG cell line, which naturally expresses EGFRvIII. Moreover, when administered systemically, EGFRvIII+ CAR T cells localized to areas of invasive tumor, suppressed tumor growth, and enhanced survival of mice with established intracranial D-270 MG tumors. Together, these data demonstrate that systemically administered T cells are capable of migrating to the invasive edges of GBM to mediate antitumor efficacy and tumor regression.

Glioblastoma (GBM) is the most common form of primary malignant brain tumor in adults and remains one of the most deadly neoplasms. Despite multimodal therapy including maximal surgical resection, radiation, and temozolomide (TMZ), the median overall survival is less than 15 months [1]. Moreover, these therapies are non-specific and are ultimately limited by toxicity to normal tissues [2]. In contrast, immunotherapy promises an exquisitely precise approach, and substantial evidence suggests that T cells can eradicate large, well-established tumors in mice and humans [3] –[7].

Chimeric antigen receptors (CARs) represent an emerging technology that combines the variable region of an antibody with T-cell signaling moieties, and can be genetically expressed in T cells to mediate potent, antigen-specific activation. CAR T cells carry the potential to eradicate neoplasms by recognizing tumor cells regardless of major histocompatibility complex (MHC) presentation of target antigen or MHC downregulation in tumors, factors which allow tumor-escape from treatment with ex vivo expanded tumor-infiltrating lymphocytes (TILs) [8] and T-cell receptor (TCR) gene therapy [9], [10].

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Bringing awareness on a syndrome that makes it hard for families and patients trying to have genetic testing on cancers in their families. I first came across this syndrome with a researcher at Swedish Medical Center’s Cancer Research Group. Some families can have so many various cancers that genetic testing is extremely costly to patients and may not be able to pinpoint the mutation due to this syndrome.

Yet misdiagnosis remains an ongoing challenge, and a recent international study involving more than 100 countries and nearly 2000 patients revealed the average case takes between 5 and 9 years to properly diagnose after the first symptoms appear, and the average patient may see five or six doctors, noted Richard R.P. Warner, MD, in an interview with Oncology Nursing News.

“You can’t detect it, if you don’t suspect it,” said Warner, who directs the Center for Carcinoid and Neuroendocrine Tumors at Mount Sinai Hospital. Most doctors will only see one or two cases in their lifetime, and symptoms of NETs, like diarrhea and recurrent episodes of flushing, are associated with other, more commonly seen conditions.

He added that to complicate matters even further, “no two samples of tumors are exactly identical.” The treatment has to be customized for each case and depends on where the tumor is located and how much it has spread.

Continue reading “Understanding Neuroendocrine Tumors and Carcinoid Syndrome” | >

American woman gets biologically younger after gene therapies.

Elizabeth Parrish, CEO of Bioviva USA Inc. has become the first human being to be successfully rejuvenated by gene therapy, after her own company’s experimental therapies reversed 20 years of normal telomere shortening.

Telomere score is calculated according to telomere length of white blood cells (T-lymphocytes). This result is based on the average T-lymphocyte telomere length compared to the American population at the same age range. The higher the telomere score, the “younger” the cells.

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Nice

A group of physicists recently built the smallest engine ever created from just a single atom. Like any other engine it converts heat energy into movement — but it does so on a smaller scale than ever seen before. The atom is trapped in a cone of electromagnetic energy and lasers are used to heat it up and cool it down, which causes the atom to move back and forth in the cone like an engine piston.

The scientists from the University of Mainz in Germany who are behind the invention don’t have a particular use in mind for the engine. But it’s a good illustration of how we are increasingly able to replicate the everyday machines we rely on at a tiny scale. This is opening the way for some exciting possibilities in the future, particularly in the use of nanorobots in medicine, that could be sent into the body to release targeted drugs or even fight diseases such as cancer.

Nanotechnology deals with ultra-small objects equivalent to one billionth of a meter in size, which sounds an impossibly tiny scale at which to build machines. But size is relative to how close you are to an object. We can’t see things at the nanoscale with the naked eye, just as we can’t see the outer planets of the solar system. Yet if we zoom in — with a telescope for the planets or a powerful electron microscope for nano-objects — then we change the frame of reference and things look very different.

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“IL-33 is a protein produced by various cell types in the body and is particularly abundant in the central nervous system (brain and spinal cord),” says lead researcher, Eddy Liew from the University of Glasgow in the UK. “We found that injection of IL-33 into aged APP/PS1 mice rapidly improved their memory and cognitive function to that of the age-matched normal mice within a week.”

Before we go any further, we should make it clear that these results are restricted to mice only, and at this stage, we have no idea if they will translate at all in humans with Alzheimer’s.

And the odds aren’t great — one study put successful translation of positive results in mice to humans at a rate of about 8 percent, so we can never get too excited until we see how things fare in human trials.

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