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Before the Bell - Nastech Soars 23 Pct.  NEW YORK (Reuters) - Shares of Nastech Pharmaceutical Co.  Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=NSTK.O target=/stocks/quickinfo/fullquote"&gt;NSTK.O&lt;/A&gt; jumped 23 percent before the bell on Monday after  the company said it tied up with Merck   Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=MRK.N target=/stocks/quickinfo/fullquote"&gt;MRK.N&lt;/A&gt; to develop  and market Nastech's experimental nasal spray treatment for  obesity. 