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Tag: "lung" at biology news

Long-term marijuana smoking leads to respiratory complaints

...eased respiratory symptoms, suggesting obstructive lung disease. The authors noted several common limi...al negative impact of marijuana smoking on overall lung health," said Tetrault. ...

Migration played key role in HIV spread in South Africa

...eased respiratory symptoms, suggesting obstructive lung disease. The authors noted several common limi...al negative impact of marijuana smoking on overall lung health," said Tetrault. ...

Scientists discover how body fights to control spread of cancer

...xists in the blood. In diseases such as breast, lung and colorectal cancer, infected cells lose growth control and eventually form tumours at these sites. If caught early these tumours can be effectively removed surgically. However, when the cancer cells have invaded the blood, the effectiveness of su...

A genetic 'gang of 4' drives spread of breast cancer

...oodstream and penetrate through blood vessels into lung tissues. Although shutting off these genes indivi...tory system of mice. "When these cells reached the lung capillaries, they just got stuck there," said Massagué. "We concluded that metastatic cells use thes...

Synthetic peptide targets latent papilloma virus infections

...second most preventable cancer in the world, after lung cancer, is cervical cancer, the result of high HPV infection rates in the developing world, in Asia and South America and Africa," he added. "If we can get something to stop HPV replication, it would have a big health impact." Botchan, post-doctora...

Soft-cell approach cuts animal tests

...t linked to human cancer; nitrogen dioxide, a lung irritant that causes inflammation, pulmonary oedem...s to reach other organs, relevant airway cells and lung cells are a major focus for inhalation studies. The advantage of using human cell lines and cult...

Breakthrough vaccine to treat chemo-resistant ovarian cancer

...eat other forms of cancer including colorectal and lung cancer patients, as well as patients with malignant melanomas. ...

Type of stem cell found to reside in transplanted lungs

...ection of donated organs and with various kinds of lung disease. The study by University of Michigan Hea...hers is significant because of the large number of lung transplant patients who experience chronic rejection of donated lungs, with rejection rates of about...

Study calculates patient time costs associated with cancer care

...was longest for patients with gastric (35.4 days), lung (32.4 days), and ovarian (31.9 days) cancer. Estim...99.1 hours) and highest for ovarian (485.3 hours), lung (488.3 hours), and gastric (512.2 hours) cancer. They calculated that the net patient time costs dur...

Need oxygen? Cells know how to spend and save

...ls grown in hypoxia. In low oxygen, liver, uterus, lung and colon cells all made COX4-2. The researchers then exposed mice to hypoxia for a few weeks and found that they too showed increased levels of COX4-2. In 1992, Semenza's team had discovered a protein which they called HIF-1 (for hypoxia-inducib...

Penn researchers show how nanocylinders deliver medicine better than nanospheres

...e anticancer drug paclitaxel to an animal model of lung cancer ten times longer than that delivered on sph... deliver the anticancer drug paclitaxel to a human lung tumor tissue implanted in mice. The cylinders have diameters as small as 20 nm and lengths approachi...

Gut research yields new anti-cancer approach

...pump them out" of tumor cells. Even for breast and lung cancer, the tumor types for which Taxol is most used, nearly 100 percent of these tumors eventually become resistant, said Alok A. Khorana, M.D., assistant professor of Medicine at the Medical Center. In cells with more drug efflux pumps, Taxol is no...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

...beta carotene is already known to increase risk of lung cancer and cardiovascular disease in smokers," Peters said. "While it would be counter-productive to advise people against eating carrots and leafy vegetables, I would say to be cautious about taking beta carotene supplements, particularly at hig...

Hexavalent chromium in drinking water causes cancer in lab animals

...studies have shown that hexavalent chromium causes lung cancer in humans in certain occupational settings as a result of inhalation exposure," said Michelle Hooth, Ph.D., NTP study scientist for the technical report. "We now know that it can also cause cancer in animals when administered orally." The...

Targeting sugar on blood vessels may inhibit cancer growth

...o, altered the growth rate of tumors prepared from lung carcinoma cells in the mice. "We theorized that...essfully inhibit the growth of tumors in colon and lung cancers. "If novel drugs can be developed to target tumor heparan sulfate, we might be able to ma...

'Virtual Patient' to simulate real-time organ motions for radiation therapy

...uracy and effectiveness of radiation treatment for lung and liver cancers. X. George Xu, professor of n... not static beings, and a moving organ such as the lung or heart is a main concern in radiation treatment or imaging of tumors that are affected by such org...

Gene expression patterns predict rapid decline in idiopathic pulmonary fibrosis patients

Idiopathic pulmonary fibrosis (IPF) is a chronic lung disease typically characterized by the slow but pr... to complete pulmonary failure and death without a lung transplant. Based on observations in the clinic that some IPF patients display a more rapidly progr...

Extra-aggressive form of idiopathic pulmonary fibrosis identified

...monary fibrosis (IPF) is a chronic and progressive lung disorder from which most patients die within 5 yea... of therapeutic interventions for this devastating lung disease....

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

...been engineered to produce cardiac, neural, blood, lung and liver progenitor cells that perform many of the functions needed to help replace cells and tissues injured by many diseases, the paper notes. Among the insights into cell and tissue engineering gained from work with embryonic stem cells, it adds,...

Researchers discover 'acquired' DNA key to certain bacterial infection

...um avium – a bacterium which can result in serious lung infections and is prevalent in emphysema and AIDS ...– may be increasing. In contrast, the incidence of lung infection in patients with chronic lung diseases and cystic fibrosis is increasing. Understanding...

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