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Stomach cancer risk

June 26, 2000

NEW YORK, June 26 (Praxis Press) Stomach cancer is thought to result from Helicobacter pylori infection, most common where socioeconomic conditions are poor. Leon and colleagues have found that mortality from stomach cancer among 65-74 year old men correlates with infant mortality in 27 countries and that the two factors are strongly related (see editorial, or paper). To perform the analysis the researchers obtained death rates from stomach cancer and other causes from a database of the World He

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Acute chest syndrome

June 23, 2000

NEW YORK, June 23 (Praxis Press) Acute chest syndrome is the leading cause of death among patients with sickle cell disease, but its cause is largely unknown. To determine the cause of acute chest syndrome and its response to therapy, Vichinsky and colleagues performed a study of 671 episodes of the acute chest syndrome in 538 patients with sickle cell disease. They found that among patients with sickle cell disease, acute chest syndrome is commonly precipitated by fat embolism and infection, es

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"African levels" of ill-health push the US health system to 37th rank

By | June 22, 2000

The World Health Organisation (WHO)'s World Health Report for the year 2000 faces health ministries head on, and refuses to take their data for granted. Instead, it makes its own statistical analysis of how well 191 different national health systems are functioning. Tables cover a wide range of indicators, but summing up performance into a single measure, the report ranks the massively costly US system way down the list.WHO's Chris Murray

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A first postcard from biotechnological China

By | June 22, 2000

Does China need biotechnology? The answer from China seems to be an emphatic yes. We have only 7% of the world's land, and yet are feeding 22% of the world's population. China's per capita tillable land and per capita consumption of fresh water are both one-fourth those of the world's averages. It is estimated that our population will reach 1.6 billion by 2030 (from 1.3 billion now) and food consumption will reach 650 million tons, compared with present production of 500 million tons. On top of

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NEW YORK, June 22 (Praxis Press) Exercise training in patients with chronic heart failure improves work capacity, but effects on central hemodynamic function are not well established. Hambrecht and colleagues assigned 73 men younger than 70 with chronic heart failure to an exercise program or to a physically inactive control group (see paper). For the first 2 weeks of the program, participants exercised on a bicycle ergometer for 10 minutes four to six times a day under hospital supervision. For

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New UK Science Council wants "chartered scientists"

By | June 22, 2000

10 000 in its kitty aims to represent - and professionalize - rank-and-file British scientists.

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Anxiety treatment

June 21, 2000

NEW YORK, June 21 (Praxis Press) A common disorder known as generalized anxiety disorder (GAD) lasts for a period of six months or more, but it is unknown whether the long term-use of a drug used to treat this disorder, venlafaxine XR (brand name Effexor), is safe or effective. A new study has found that venlafaxine XR is an effective for both the short- and long-term treatment of anxiety. Venlafaxine XR may be useful for the long-term treatment of GAD.

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Venlafaxine and GAD

June 21, 2000

NEW YORK, June 21 (Praxis Press) Generalized anxiety disorder (GAD) is associated with debilitating psychic and somatic symptoms. Previous studies have found that Venlafaxine extended-release (XR) capsules are effective in short-term treatment of patients with GAD, but without major depressive disorder (MDD). It is unclear, however, whether venlafaxine XR confers long-term benefits. Gelenberg and colleagues compared the 6-month efficacy and safety of a flexible dosage of venlafaxine XR in 251 o

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NEW YORK, June 20 (Praxis Press) A type of fat found in the blood, called triglyceride, has been linked to heart disease for years, but its exact role in heart disease is unclear compared to other risk factors, such as high cholesterol, A study has shown that in families with a disorder that raises levels of fats in the blood, people with elevated triglycerides are at increased risk of having a heart attack-even when their cholesterol levels are normal. High triglyceride levels may be an import

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NEW YORK, June 20 (Praxis Press) Criteria for deciding whether patients with hyperkalemia should be treated in a hospital or as an outpatient have not been well established. Charytan and colleagues examined the current practices regarding hospitalization of patients with hyperkalemia and evaluated the criteria for admission. To perform the study they evaluated 11 patients hospitalized for hyperkalemia and compared them to 12 patients with a similar degree of hyperkalemia who were treated as outp

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