<PAGE>
                                                                    EXHIBIT 99.1


                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      In connection with the Quarterly Report of Advanced Biotherapy, Inc. (the
"Company") on Form 10-QSB for the quarter ended September 30, 2002, as filed
with the Securities and Exchange Commission on the date hereof (the "Periodic
Report"), I, Edmond F. Buccellato, President and Chief Executive Officer of the
Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that:

      1. the Periodic Report fully complies with the requirements of Section
13(a) or 15(d) of the Securities Exchange Act of 1934; and

      2. the information contained in the Periodic Report fairly presents, in
all material respects, the financial condition and results of operations of the
Company.

Dated: November 12, 2002               /s/ Edmond F. Buccellato
                                           -------------------------------------
                                           Edmond F. Buccellato, President and
                                           Chief Executive Officer


