Intact cells Escherichia coli CCM 2843, exhibiting substantial benzylpenicillin amidase activity, were bound mutually with supporting waste microbial cells, native or treated, to obtain an inexpensive biocatalyst for the production of 6-aminopenicillanic acid (6-APA). The bond was effected by glutaraldehyde (GA) and Sedipur CL-930 (PEI), without any carrier. The optimal concentration of GA was 2%, that of PEI 1%. The optimal biocatalyst was obtained by immobilization of productive cells with their fragments at a mass ratio of 4:1. The cell aggregates were used for hydrolysis of potassium benzyl-penicillin at a concentration of 5% to 6-APA. After 25 repeated batch conversions the degree of conversion did not decrease; its average value was 96.4%.

• MeSH
• bakteriální adheze MeSH
• Escherichia coli enzymologie   MeSH
• penicilinamidasa metabolismus   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• penicilinamidasa MeSH

• Klíčová slova
• Bacterial diseases, Laboratory animals, Pharmacokinetics, abscess, penicillin, rabbit,
• MeSH
• antibakteriální látky aplikace a dávkování   krev   farmakokinetika   MeSH
• injekce intramuskulární veterinární   MeSH
• králíci MeSH
• penicilin G aplikace a dávkování   krev   farmakokinetika   MeSH
• vztah mezi dávkou a účinkem léčiva MeSH
• zvířata MeSH
• Check Tag
• králíci MeSH
• mužské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antibakteriální látky MeSH
• penicilin G MeSH

• Klíčová slova
• BACTERIA *, BIOCHEMISTRY *, EXPERIMENTAL LAB STUDY *, PENICILLIN *, PENICILLIN G *,
• MeSH
• Bacteria * MeSH
• biochemické jevy * MeSH
• biochemie * MeSH
• hydrolýza MeSH
• kyselina penicilanová * MeSH
• penicilin G * MeSH
• peniciliny * MeSH
• výzkum * MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• aminopenicillanic acid MeSH Prohlížeč
• kyselina penicilanová * MeSH
• penicilin G * MeSH
• peniciliny * MeSH

• MeSH
• farmaceutická chemie MeSH
• oscilometrie MeSH
• penicilin G * MeSH
• polarografie MeSH
• techniky in vitro MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• penicilin G * MeSH

• MeSH
• chemické techniky analytické MeSH
• penicilin G * MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• penicilin G * MeSH

BACKGROUND: Preterm prelabor rupture of the membranes (PPROM) is frequently complicated by intraamniotic inflammatory processes such as intraamniotic infection and sterile intraamniotic inflammation. Antibiotic therapy is recommended to patients with PPROM to prolong the interval between this complication and delivery (latency period), reduce the risk of clinical chorioamnionitis, and improve neonatal outcome. However, there is a lack of information regarding whether the administration of antibiotics can reduce the intensity of the intraamniotic inflammatory response or eradicate microorganisms in patients with PPROM. OBJECTIVE: The first aim of the study was to determine whether antimicrobial agents can reduce the magnitude of the intraamniotic inflammatory response in patients with PPROM by assessing the concentrations of interleukin-6 in amniotic fluid before and after antibiotic treatment. The second aim was to determine whether treatment with intravenous clarithromycin changes the microbial load of Ureaplasma spp DNA in amniotic fluid. STUDY DESIGN: A retrospective cohort study included patients who had (1) a singleton gestation, (2) PPROM between 24+0 and 33+6 weeks, (3) a transabdominal amniocentesis at the time of admission, and (4) intravenous antibiotic treatment (clarithromycin for patients with intraamniotic inflammation and benzylpenicillin/clindamycin in the cases of allergy in patients without intraamniotic inflammation) for 7 days. Follow-up amniocenteses (7th day after admission) were performed in the subset of patients with a latency period lasting longer than 7 days. Concentrations of interleukin-6 were measured in the samples of amniotic fluid with a bedside test, and the presence of microbial invasion of the amniotic cavity was assessed with culture and molecular microbiological methods. Intraamniotic inflammation was defined as a bedside interleukin-6 concentration ≥745 pg/mL in the samples of amniotic fluid. Intraamniotic infection was defined as the presence of both microbial invasion of the amniotic cavity and intraamniotic inflammation; sterile intraamniotic inflammation was defined as the presence of intraamniotic inflammation without microbial invasion of the amniotic cavity. RESULTS: A total of 270 patients with PPROM were included in this study: 207 patients delivered within 7 days and 63 patients delivered after 7 days of admission. Of the 63 patients who delivered after 7 days following the initial amniocentesis, 40 underwent a follow-up amniocentesis. Patients with intraamniotic infection (n = 7) and sterile intraamniotic inflammation (n = 7) were treated with intravenous clarithromycin. Patients without either microbial invasion of the amniotic cavity or intraamniotic inflammation (n = 26) were treated with benzylpenicillin or clindamycin. Treatment with clarithromycin decreased the interleukin-6 concentration in amniotic fluid at the follow-up amniocentesis compared to the initial amniocentesis in patients with intraamniotic infection (follow-up: median, 295 pg/mL, interquartile range [IQR], 72-673 vs initial: median, 2973 pg/mL, IQR, 1750-6296; P = .02) and in those with sterile intraamniotic inflammation (follow-up: median, 221 pg/mL, IQR 118-366 pg/mL vs initial: median, 1446 pg/mL, IQR, 1300-2941; P = .02). Samples of amniotic fluid with Ureaplasma spp DNA had a lower microbial load at the time of follow-up amniocentesis compared to the initial amniocentesis (follow-up: median, 1.8 × 104 copies DNA/mL, 2.9 × 104 to 6.7 × 108 vs initial: median, 4.7 × 107 copies DNA/mL, interquartile range, 2.9 × 103 to 3.6 × 107; P = .03). CONCLUSION: Intravenous therapy with clarithromycin was associated with a reduction in the intensity of the intraamniotic inflammatory response in patients with PPROM with either intraamniotic infection or sterile intraamniotic inflammation. Moreover, treatment with clarithromycin was related to a reduction in the load of Ureaplasma spp DNA in the amniotic fluid of patients with PPROM <34 weeks of gestation.

• Klíčová slova
• 16S ribosomal RNA, Ureaplasma, amniocentesis, amniotic fluid, bacteria, benzylpenicillin, biomarker, chorioamnionitis, clarithromycin, funisitis, genital mycoplasmas, great obstetrical syndromes, inflammation, interleukin-6, intraamniotic infection, microbial invasion of the amniotic cavity, neonatal outcome, neonatal sepsis, nucleic acid, polymerase chain reaction, pregnancy, prematurity, preterm birth, rapid point of care test, sterile intraamniotic inflammation,
• MeSH
• antibakteriální látky terapeutické užití   MeSH
• bakteriální infekce etiologie   prevence a kontrola   MeSH
• chorioamnionitida etiologie   prevence a kontrola   MeSH
• DNA bakterií analýza   MeSH
• dospělí MeSH
• interleukin-6 analýza   MeSH
• klarithromycin terapeutické užití   MeSH
• klindamycin terapeutické užití   MeSH
• kohortové studie MeSH
• lidé MeSH
• penicilin G terapeutické užití   MeSH
• plodová voda chemie   MeSH
• předčasný odtok plodové vody * MeSH
• retrospektivní studie MeSH
• těhotenství MeSH
• Ureaplasma genetika   MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• těhotenství MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Research Support, N.I.H., Extramural MeSH
• Názvy látek
• antibakteriální látky MeSH
• DNA bakterií MeSH
• IL6 protein, human MeSH Prohlížeč
• interleukin-6 MeSH
• klarithromycin MeSH
• klindamycin MeSH
• penicilin G MeSH

Infective endocarditis (IE) is a life-threatening disease, with its mortality rate varying depending on the infectious agent. Streptococci are among the most common causes of infective endocarditis. However, Streptococcus vestibularis has rarely been associated with human infections, typically affecting patients with underlying conditions such as immunosuppressive diseases, valve replacement, rheumatic heart disease, and hemodialysis. We present the case of a 26-year-old man who presented with fever, unanticipated weight loss, and fatigue. Although no typical risk factors for infective endocarditis were identified at admission, transesophageal echocardiography revealed a bicuspid aortic valve with calcification, paravalvular aortic abscess formation, and vegetations on the anterior leaflet of the mitral valve. Blood cultures grew S. vestibularis, which was initially sensitive to benzylpenicillin but developed emergent resistance on the third day of the antibiotic treatment. Subsequently, ceftriaxone therapy was initiated, and blood cultures became sterile on day 10. The patient eventually underwent aortic valve replacement. We report the first known case of native aortic and mitral valve endocarditis caused by S. vestibularis, accompanied by a paravalvular abscess around the native aortic valve, in a patient who had no typical risk factors for infective endocarditis, except for a bicuspid aortic valve.

• Klíčová slova
• Bicuspid aortic valves, Infective endocarditis, Periannular abscesses, Streptococcus vestibularis,
• MeSH
• antibakteriální látky terapeutické užití   MeSH
• aortální insuficience * mikrobiologie   chirurgie   MeSH
• bakteriální endokarditida * komplikace   diagnóza   farmakoterapie   mikrobiologie   MeSH
• bikuspidální aortální chlopeň * komplikace   chirurgie   MeSH
• cefalosporiny třetí generace terapeutické užití   MeSH
• ceftriaxon terapeutické užití   MeSH
• chirurgická náhrada chlopně MeSH
• dospělí MeSH
• lidé MeSH
• mitrální chlopeň * mikrobiologie   MeSH
• penicilin G terapeutické užití   MeSH
• rezistence na penicilin MeSH
• streptokokové infekce * komplikace   diagnóza   farmakoterapie   mikrobiologie   MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH
• Názvy látek
• antibakteriální látky MeSH
• cefalosporiny třetí generace MeSH
• ceftriaxon MeSH
• penicilin G MeSH

• MeSH
• DNA bakterií farmakologie   MeSH
• penicilin G farmakologie   MeSH
• Salmonella typhimurium účinky léků   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• DNA bakterií MeSH
• penicilin G MeSH

• MeSH
• krev metabolismus   MeSH
• ledviny metabolismus   MeSH
• lidé MeSH
• penicilin G metabolismus   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• penicilin G MeSH

• Klíčová slova
• SYPHILIS *,
• MeSH
• lidé MeSH
• penicilin G * MeSH
• syfilis * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• penicilin G * MeSH