Hypoxia News and Research

RSS

Hypoxia is a condition in which there is a decrease in the oxygen supply to a tissue. In cancer treatment, the level of hypoxia in a tumor may help predict the response of the tumor to the treatment.

Adaptive functional evolution of leptin in cold-adaptive pika family

Researchers at the Northwest Institute of Plateau Biology, Chinese Academy of Sciences have put forward the viewpoint for the first time that adaptive functional evolution may occur in the leptin protein of the pika (Ochotona) family, a typical cold-adaptive mammal.

24 Jan 2008

Breakthrough for organ transplants and cardiovascular diseases

When a blood vessel clogs up, a localized deficiency of oxygen results, causing the surrounding tissue to die.

7 Jan 2008

New information about how normal cells and cancer cells survive under stress

Scientists report that an evolutionarily conserved transcription factor may have both positive and negative effects on the growth of tumors, depending on whether or not the tumor cells have enough oxygen.

28 Dec 2007

Link between chronic kidney disease and hypoxia

Researchers at the University of Pennsylvania School of Medicine have discovered how low-oxygen conditions can worsen chronic kidney disease (CKD).

20 Dec 2007

Discovery of link between moderate exercise and decreased inflammation of damaged skin tissue

In recent years, researchers at the University of Illinois have uncovered a host of reasons for people to remain physically active as they age, ranging from better brain function to improved immune responses.

29 Nov 2007

Antibody might help starve cancerous tumors

An antibody might offer a safe and effective complement to anti-cancer therapies designed to starve malignant tumors by pruning the blood vessels that feed them, researchers report in the November 2 issue of the journal Cell, a publication of Cell Press.

2 Nov 2007

SENP1 protein may provide a basis for future targeted cancer therapies

Researchers at the University of Texas M. D. Anderson Cancer Center have found a protein that enables cellular survival during periods of low oxygen, or hypoxia, which also is key for development of many kinds of cancer.

2 Nov 2007

How can some people live at high altitudes and thrive while others struggle?

The answer for Tibetans who live at altitudes around 14,000 feet is increased nitric oxide (NO) levels. High levels of NO circulate in various forms in the blood and produce the physiological mechanisms that cause the increased blood flow that maintains oxygen delivery despite hypoxia - low levels of oxygen in the ambient air and the bloodstream.

31 Oct 2007

New target for Hepatocellular carcinoma therapy

Hepatocellular carcinoma (HCC) is a major health problem worldwide. Currently, the only chance for obtaining a cure in patients with HCC is by either a surgical resection or liver transplantation.

25 Oct 2007

Combination targets offer new hope in fight against cancer

While some targeted therapies - drugs developed to attack specific molecules in the critical chemical pathways occurring within cancer cells - work well by themselves, increasingly researchers are finding that they work better when teamed with other targeted and conventional therapies.

24 Oct 2007

Hydrogen sulfide based drug shows promise in reducing heart-attack damage

Producing a state of "hibernation on demand" in mice by administering an experimental drug from Ikaria (an injectable formulation of the biological gas hydrogen sulfide) showed promise in a study designed to reduce damage from heart attacks.

26 Sep 2007

Vitamin C inhibits the growth of some tumors

Nearly 30 years after Nobel laureate Linus Pauling famously and controversially suggested that vitamin C supplements can prevent cancer, a team of Johns Hopkins scientists have shown that in mice at least, vitamin C - and potentially other antioxidants - can indeed inhibit the growth of some tumors ¯ just not in the manner suggested by years of investigation.

11 Sep 2007

N-acetylcysteine may not be as safe as once thought

Certain preparations taken to enhance athletic performance or stave off disease contain an anti-oxidant that could cause harm.

5 Sep 2007

Biomira files NDA for novel inhibitor of hypoxia-inducible factor-1 alpha

Biomira Inc. has announced that it has submitted an investigational new drug (IND) application to the U.S. Food and Drug Administration for PX-478. PX-478 has been shown in preclinical studies to inhibit hypoxia-inducible factor (HIF)-1 alpha, a protein that controls the transcription of a number of genes whose products are important for tumor growth and survival.

4 Jul 2007

Key mechanism identified by which the body regulates iron metabolism

Scientists at the University of California, San Diego (UCSD) have determined a key mechanism by which the body regulates iron metabolism, a discovery that may provide new approaches for the treatment of anemia.

23 Jun 2007

Breastfeeding may provide long-term protection against childhood sleep-related breathing disorder

A childhood sleep-related breathing disorder (SRBD) is known to have negative consequences on cognitive development, behavior, quality of life and utilization of health care resources.

14 Jun 2007

Combination therapy reduces tumor resistance to radiation

Radiation is used to treat a variety of tumors and the response of tumors to radiation is dependent on endothelial cell death, which in turn limits oxygen delivery to the tumor, causing hypoxia and tumor cell death.

8 Jun 2007

Link between mild infection and hypoxic apnoea

Apnoea and sudden infant death syndrome (SIDS) represent major medical concerns in the neonatal population, and infection may play a crucial role in their pathogenesis.

28 May 2007

Respiratory control in insects: integration from the gene to the organism

Because of new imaging technology, researchers are getting a better understanding of a physiological paradox: how insects, which have a respiratory system built to provide quick access to a lot of oxygen, can survive for days without it.

30 Apr 2007

Headaches may act like tiny transient strokes

Migraines may be doing more than causing people skull-splitting pain. Scientists have found evidence that the headaches may also be acting like tiny transient strokes, leaving parts of the brain starved for oxygen and altering the brain in significant ways.

30 Apr 2007