Dealmaking supports European shares as Syria worries weigh; relief for Sulzer

* STOXX 600 index down 0.1 percent

* Shire (Xetra: S7E.DE - news) up on report Takeda seeks loans for possible bid

* M&A news also boosts Firstgroup (LSE: FGP.L - news) , Snaitech

* Sulzer (IOB: 0QQ9.IL - news) freed of U.S. sanctions, shares rally (For a live blog on European stocks, type LIVE/ in an Eikon news window)

By Danilo Masoni

MILAN, April 12 (Reuters) - Fresh dealmaking activity helped support European shares on Thursday, although investors remained cautious on worries over the prospect of U.S. military action in Syria.

The pan-European STOXX 600 index fell 0.1 percent at 0821 GMT, having lost 0.6 percent on Wednesday. The FTSE was flat and Germany's DAX lost 0.1 percent.

U.S. President Donald Trump warned Russia this week of an imminent military action in Syria over a suspected gas attack, declaring that missiles "will be coming" and lambasting Moscow for standing by Syrian President Bashar al-Assad.

"We may well see a military response by the end of the week, as the situation in Syria ramps up further, and this may well temper investor enthusiasm to buy back into the market ahead of the weekend," said CMC (BSE: CMC.BO - news) market analyst Michael Hewson.

However, investors found some comfort in some merger and acquisition developments.

Shire rose 2.2 percent after sources told Reuters Takeda had sounded out creditors for loans to help finance a possible bid for the British rare disease specialist.

Firstgroup spiked 9 percent after news it rejected a takeover approach from Apollo, while Playtech (Frankfurt: A1J0S4 - news) rose 8.2 percent after it agreed to buy Italian betting firm Snaitech in a $1 billion deal. Snaitech was up 14.8 percent.

The tensions over Syria kept crude oil prices near 4 year highs, helping energy stocks advance 0.5 percent.

In earnings some disappointing updates weighed.

Carrefour (LSE: 0NPH.L - news) fell 5 percent following weak quarterly sales, while German drugs-packaging maker Gerresheimer (Amsterdam: GH6.AS - news) also fell weaker-than-expected first-quarter earnings.

Sulzer rallied 15 percent after the Swiss pumpmaker said it freed itself of U.S. sanctions after authorities approved its buyback of shares that has reduced to less than 50 percent the stake of Russian oligarch Viktor Vekselberg, chairman of holding company Renova.

The relief bounce however made up for only part of the 22 percent share price drop Sulzer suffered since the sanctions were announced last week, as some investors remained cautious.

"The fact that renewed sanctions could be imposed at a future point in time cannot be ruled out," Zuercher Kantonalbank analyst Armin Rechberger said in a note.

"Renova could strive for reducing its respective equity interest in Sulzer (now 48.8 percent), Oerlikon (43 percent), Schmolz & Bickenbach (IOB: 0QPH.IL - news) (42 percent) and Zueblin (43 percent), which would lead to sell-off pressure," he added.

Shares (Berlin: DI6.BE - news) in Oerlikon rose 4.6 percent, Schmolz & Bickenbach added 1.6 percent. (Reporting by Danilo Masoni Editing by Alison Williams)