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The study was aimed to improving the efficiency and reducing the incidence of complications after transvaginal pelvic reconstructive surgery with the installation of synthetic mesh prosthesis for pelvic organ prolapse. The study involved 228 patients with II-IV stage pelvic prolapse, of which 144 (63.2%) underwent surgery by the TVM (Tension-free Vaginal Mesh) method, and 84 (36.8 %)--by the original method with the installation of patented mesh implant. In the group of patients who underwent reconstruction of the pelvic floor with the implantation of mesh prosthesis, original in form and method of installation, in the postoperative period significantly less stress urinary incontinence was detected, better functional results have been found, and significantly fewer intra- and postoperative complications were diagnosed. Transvaginal pelvic floor reconstruction with the use of technology to minimize operational approaches when setting the original mesh implant allows to effectively restoring the normal anatomy of the vagina, and characterized by high safety and good functional results.

The study was aimed to examination of prevalence of obstructive complications of the upper urinary tract in patients with pelvic prolapse and evaluation of the effectiveness of their correction using modern reconstructive surgery. Bilateral ureterohydronephrosis was detected in 14 (12%) of 117 patients. In patients with stage IV pelvic prolapse, proportion of patients with hydronephrosis was much higher--22.6%. Transvaginal reconstructive surgery with the installation of synthetic mesh prosthesis according to the Tension free Vaginal Mesh method ensured the restoration of normal anatomy of the pelvic floor and allowed to eliminate obstructive disorders of the upper urinary tract and their complications.

The trial enrolled 64 females with genital prolapse corrected in 2003-2007 with transvaginal synthetic aids. Urinary incontinence of effort was detected in 53.1% patients with cystocele. Efficacy of surgical treatment of vaginal prolapse was 73.3% in use of anterior colporaphy with implantation of prolen net and 100% in reconstruction of the pelvic fundus by PROLIFT technique. Early postoperative complications (vaginal wall erosion) occurred in 16.7 and 15% patients, respectively. Thus, reconstruction of the pelvic fundus is an operation of choice in severe and combined forms of pelvic prolapse in women.

A laboratory study in order to establish etiology of acute epididymitis (AE) was made in 243 patients. The complex of etiological diagnosis included: microscopic investigation of urethral discharge or urine, bacteriological examination of an initial urine portion and wound discharge in the operated on patients. In addition, urethral discharge/urine was studied with polymerase chain reaction (PCR) in 96 patients; in 46 men PCR examined operative material. It was found that in sexually active young patients AE was caused primarily by infectious agents of sexually transmitted diseases. Targeted etiotropic therapy results in clinical cure in the majority of the cases. In older patients the disease was of bacterial origin (gram-negative bacteria, as a rule, are causative agents) and in some cases is associated with development of pyodestructive epidydimitis.

We have sequenced 6006 bp DNA of a region from the Bacillus subtilis SHgw chromosome known to contain riboflavin biosynthesis genes (rib gene cluster, 210 degrees on the B. subtilis genetic map). Five of the seven open reading frames found within the sequence are shown to represent the genes ribG, ribB, ribA, ribH and ribTD. The calculated molecular masses for the putative translation products are 39,305, 23,481, 44,121, 16,287 and 14,574 daltons respectively. The five rib genes are transcribed as a polycistronic 4277 nucleotide messenger RNA. The steady-state level of the transcript is negatively regulated by riboflavin. A cis-acting element necessary for regulation was mapped by analysis of constitutive mutations within the 5' untranslated region of the operon. The element is at least 48 bp in length and does not bear obvious similarity to well defined prokaryotic regulatory elements. The molecular mechanism of regulation remains unknown, but the data presented argue against regulation by attenuation.

Seventeen cis-dominant mutations leading to riboflavin overproduction in Bacillus subtilis were localized to the region between nucleotides +37 and +159 relative to the transcription initiation site of the riboflavin operon. This region displays an unusual structure for regulatory sequences. The main part of it represents clusters of A/T and G/C-rich sequences that symmetrically blank a short inverted repeat.

We describe several improvements of chain-termination DNA sequencing procedure of Sanger et al. For template preparation we use 0.3 ml cultures of M13 clones, grown in standard 1,5 ml polypropylene tubes. The sequencing experiment differs from the previously described by the use of deoxyNTP, labelled with phosphorus-33 (a low energy isotope with a half-life of 25 days, commercially produced in the USSR), and by a "quasi-end labelling" reaction, preceding the DNA synthesis in the presence of dideoxyNTPs. The combination of the phosphorus-33 and the quasi-end labelling produces very sharp sequencing ladders, that equal or exceed in quality those obtained with sulphur-35, and only an overnight exposure with a conventional X-ray film is required. The use of plastic tubes for bacterial growth and the 60-well microchambers for carrying out sequencing reactions results in substantial saving of time and cost in routine "middle scale" sequencing (both types of plasticware are produced in the USSR).

Double stranded multimers (C2A6C2)n, (C2A6G2)n and (G2A6G2)n were prepared from chemically synthesized oligonucleotides to study the influence of sequences flanking the An tract on the curvature of DNA. All these duplexes, including polypurine.polypyrimidine one, exhibit strong retardation in polyacrylamide gel which is indicative of pronounced DNA curvature. It has been proposed previously that among the bends at the boundary with the oligo(A) tract two types should be distinguished: 5'-bends and 3'-bends (Koo et al., 1986) This distinction was deduced from different relative mobilities of two specially designed sequences having phased 5'-bends and 3'-bends, respectively. Our data indicate that the substitutions of nucleotides at both 5' and 3' boundaries of A6 tract result in comparable changes in relative mobility. Therefore, for B-B' bends it is important to take into account not only whether they are at the 5' or 3' end of an oligo(dA) tract, but also the particular sequences at the boundaries of this tract.

In vitro mutagenesis with methylhydroxylamine and nitrosomethylurea was used to obtain a number of Bacillus subtilis mutants impaired in flavin-dependent response. Mutants displayed varying degree of flavin-dependent repression of riboflavin synthase and of 6,7-dimethyl-8-ribityl-lumasine accumulation. Single nucleotide substitutions were detected by DNA sequencing in all of the mutants, affecting the 48 b.p. target area between the mRNA start and the AUG of the first gene.

Evidence is presented that streptomycin-dependent mutants of Escherichia coli K-12 are incompatible with the functional activity of streptomycin-resistance genes coding for aminoglycoside adenilyl transferase. On the basis of this phenomenon, a method for selection of streptomycin-sensitive mutations in these genes is proposed, and the possibility of the direct selection of hybrid DNA molecules carrying inserts inactivating streptomycin-resistance genes is discussed. The effectiveness of the method for isolation of streptomycin-sensitive R100.1 plasmid derivatives was demonstrated.

We have tested possibilities of Escherichia coli strains dependent on drugs streptomycin and paromomycin for selection of spontaneous mutations in the RP4 kan gene specifying resistance to aminoglycosids--kanamycin, neomycin and paromycin. A set of kan gene mutations were obtained, classified ad mapped.

Genes controlling sporulation of Bacillus subtilis SHgW are localized in the region of 210 degrees of Bac. subtilis chromosome between lys genes and the rib operon. The method of constructing deletions of definite size was used in the deletion mapping.

All the structural genes of riboflavin biosynthesis are shown to be located on the 2.8 MD DNA fragment, using the collection of plasmids, carrying the Bacillus subtilis riboflavin operon fragments and Bacillus subtilis strains, containing various deletions of rib-operon for analysis. The proximal Bgl II site is shown to be located between promoter P1 and the first structural gene ribG. The distal Hind III site of fragment C is the left bound of the rib-operon.