Tag Archives: medicine

Machines learn to detect breast cancer

Duo Zhou, a biostatistician at pharmaceutical company Pfizer in New York and colleagues Dinesh Mital and Shankar Srinivasan of the University of Medicine and Dentistry of New Jersey, point out that data pattern recognition is widely used in machine-learning applications in science. Computer algorithms trained on historical data can be used to analyze current information and detect patterns and then predict possible future patterns. However, this powerful knowledge discovery technology is little used in medicine…

Earlier onset of puberty in girls linked to obesity

Published online Nov. 4, the multi-institutional study strengthens a growing body of research documenting the earlier onset of puberty in girls of all races. "The impact of earlier maturation in girls has important clinical implications involving psychosocial and biologic outcomes," said Frank Biro, MD, lead investigator and a physician in the Division of Adolescent Medicine at Cincinnati Children’s Hospital Medical Center. "The current study suggests clinicians may need to redefine the ages for both early and late maturation in girls." Girls with earlier maturation are at risk for a multitude of challenges, including lower self-esteem, higher rates of depression, norm-breaking behaviors and lower academic achievement. …

Largest-ever study of male breast cancer treatment shows more mastectomy, less radiation than in females

"We know very little about male breast cancer since it comprises only 0.6 percent of all breast cancer, and nearly all therapy is based on female breast cancer studies. This study demonstrates that just as in women, men with early stage breast cancer have the same outcome with a mastectomy or a lumpectomy followed by radiation. In women, breast-conserving surgery is the standard and preferred treatment for the majority of women…

Fracture prevention in cancer-associated bone disease

A new paper published by an International Osteoporosis Foundation (IOF) Committee of Scientific Advisors Working Group reviews the epidemiology and pathophysiology of cancer-associated bone disease and provides information about fracture prevention in cancer patients. The review summarizes the pertinent recommendations of leading societies, providing guidance for clinical decision making and information on evidence-based pathways to prevent skeletal-related events and bone loss. Cancer patients are at greater risk of bone disease and fractures Cancer-induced bone disease can result from the primary disease itself, either due to circulating bone resorbing substances, or from metastasis to bone such as commonly occurs with breast, lung and prostate cancer. As well, cancer therapy itself can cause bone loss and fractures — especially in the case of glucocorticoid or estrogen deprivation therapy, chemotherapy-induced ovarian failure, and androgen deprivation therapy. …

Stem cell scarring aids recovery from spinal cord injury

Spinal cord injuries sever nerve fibres that conduct signals between the brain and the rest of the body, causing various degrees of paralysis depending on the site and extent of the injury. Functional impairment is often permanent, since the cut nerve fibres do not grow back. The lack of regeneration has been attributed to a blockage from scar tissue that forms at the lesion. …

Researchers study epigenetic mechanisms of tumor metastasis for improved cancer therapy

The term epigenetics refers to the external modifications to DNA that turn genes "on" or "off." These modifications do not change the DNA sequence, but instead, they affect how cells read genes. The researchers propose that epigenetic and other changes mediate the development of cancer progenitor cells. These cells represent the early stage of cancer cell development and can grow rapidly to become full-fledged cancer. …

Quality of care improves for cancer patients who get palliative care consultation

Palliative care is the medical specialty that focuses on improving quality of life for patients and their families in the setting of a serious illness. Palliative care teams provide an added layer of support to patients, caregivers, and doctors by addressing unremitting symptoms, helping with decision making, and coordinating care. The American Society of Clinical Oncology (ASCO) selected a total of four high-impact abstracts, including this one, to feature in an official press briefing for its upcoming 2013 Quality Care Symposium. More than 270 abstracts will be presented at the conference, which will be held in San Diego on November 1-2…

Researchers detail possible resistance mechanisms of colorectal cancer to bevacizumab (avastin)

"Think of it like damming a river. Bevacizumab can block the main flow, but then once a tumor’s need builds up behind this dam, water starts to flow around the blockage in the form of streams and tributaries. That’s like these other growth factors — eventually a tumor becomes able to use these tributaries of VEGF-C, VEGF-D and placental growth factor to supply itself with the ‘water’ it needs," says Christopher Lieu, MD, investigator at the CU Cancer Center and assistant professor of Medical Oncology at the University of Colorado School of Medicine…

Lower cancer screening rates, increased risk of preventable disease for South Asians in Ontario

The findings were published today in a report by researchers at the Centre for Research on Inner City Health. Peel Region — a municipality comprised of Brampton, Caledon and Mississauga, north of Toronto — has 1.3 million residents, nearly one-quarter of whom are of South Asian ethnicity…