UPDATE 1-Olympics-Albanian Pulaku becomes first doping cheat

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LONDON, July 28 (Reuters) - Albanian weightlifter Hysen

Pulaku became the first athlete to be ejected from the London

2012 Olympics after testing positive for an anabolic steroid,

the International Olympic Committee said on Saturday.

The 19-year-old, who was due to compete in the men's 77kg

class, joins a string of athletes who were banned for doping

violations before the start of the Olympics.

He now faces a possible two-year sanction by the

international weightlifting federation.

Pulaku tested positive on July 23 for Stanozolol - an old,

relatively cheap and easy-to-detect drug which, like other

anabolic steroids, is designed to mimic the effects of the male

sex hormones testosterone and dihydrotestosterone.

Higher levels of testosterone cause anabolic changes in the

body, including an increased rate of protein synthesis. This in

turn can boost muscle growth and an ability to recover more

quickly between bouts of strenuous exercise.

The drug was detected in Pulaku's urine sample. His personal

coach and uncle, Sami Pulaku, said neither he or Pulaku denied

the presence of the steroid and that the decision would not be

contested.

"Of course it is always a sad day when a cheating athlete is

caught," said IOC spokesman Mark Adams. "I hope there will not

be more."

It was the same steroid that saw Greece's world indoor high

jump champion Dimitris Chondrokoukis withdraw from the Games on

Thursday after a positive test for the drug which Canadian

sprinter Ben Johnson used before the 1988 Seoul Games.

Johnson was sent home in disgrace after metabolites of the

anabolic steroid were found in his urine sample following his

victory over Carl Lewis in the 100 metres final in world record

time.

TARNISHED HISTORY

Pulaku is the latest in a long line of weightlifters to have

tested positive for drugs in Olympic Games with the sport having

been tarnished by its doping history.

The IOC had urged federations and national anti-doping

agencies to up pre-Games testing to avoid any cases during the

July 27-Aug. 12 sporting festival.

"We do target the key sports and the key athletes and I am

entirely comfortable that we have done that," said Adams.

Since the start of the Olympic period the IOC has conducted

1001 drugs tests, of which 715 are urine and 286 blood tests.

Hungarian discus thrower Zoltan Kovago, a silver medallist

at the 2004 Athens Games, will also miss the Olympics after the

Court of Arbitration for Sport said on Thursday he had failed to

provide a sample when requested.

Moroccan 1,500 metres runner Mariem Alaoui Selsouli will miss

the Games after a positive test for a banned diuretic. Nine

track and field athletes were also banned for doping violations

on Wednesday.

For a FACTBOX on substances and methods commonly used in

doping, click on

(Reporting by Neil Maidment, Kate Kelland and Karolos Grohmann;

Editing by Ed Osmond/Mark Meadows)