Translate Comments (responses, says etc) into another language

Dears, I need to translate Comments (“responses”, “says” etc) into another language but if I edit minimatica.pot, it doesn’t work.
I’ve done, for exemple, in minimatica.pot:

#: ../comments.php:23
msgid “Comments are closed.”
msgstr “I commenti sono chiusi.”

The function that adjusts the language maybe si in functions.php: should I change something here?

// Makes theme translation ready
load_theme_textdomain( ‘minimatica’, get_template_directory() . ‘/languages’ );
$locale = get_locale();
$locale_file = get_template_directory() . “/languages/$locale.php”;
if ( is_readable( $locale_file ) )
require_once( $locale_file );
}
endif;

add_action( ‘after_setup_theme’, ‘minimatica_theme_setup’ );

if ( ! function_exists( ‘minimatica_widgets_init’ ) ) :

THANKS A LOT