MATLAB: Concatenate string to string array in efficient way

Hey,

Is there any efficient way to concatenate string to string array in such way that i get from this strings:

strStart = '_';
strMsgArray = {"Ab", "Ac", "Ad"};
strEnd = 'x_';

this result:

strMsgArray = {"_Abx_", "_Acx_","_Adx_"};

They way im doing it atm is with a for-loop, but its not very efficient if size(strMsgArray,2) is large

My approach:

for k=size(strMsgArray,2)
    strMsgArray{k} = strjoin({strStart,strMsgArray{k},strEnd});
end

Afterwards I'm using it to check if any of this Expressions are in other string:

x = cellfun(@(X)~isempty(regexpi(cellFileslist{dat},X)),strMsgArray);