Itzhak Brook

In vitro effects of penicillin and telithromycin on the expression of Streptococcus pneumoniae capsule (2006)

Brook, Itzhak, Hausfeld, Jeffrey N.

Objective: To evaluate the effects of subinhibitory concentrations of penicillin and telithromycin on capsular formation by Streptococcus pneumoniae. Methods: A total of 60 isolates of S. pneumoniae,...

In vitro effects of penicillin and telithromycin on the expression of Streptococcus pneumoniae capsule (2006)

Brook, Itzhak, Hausfeld, Jeffrey N.

Objective: To evaluate the effects of subinhibitory concentrations of penicillin and telithromycin on capsular formation by Streptococcus pneumoniae. Methods: A total of 60 isolates of S. pneumoniae,...

Microbiology and management of brain abscess in children (2004)

Brook, Itzhak

Brain abscess is an uncommon but serious life threatening infection in children. The infection can originate from contiguous sites of existing infections, such as chronic otitis media, dental...

Microbiology and management of brain abscess in children (2004)

Brook, Itzhak

Brain abscess is an uncommon but serious life threatening infection in children. The infection can originate from contiguous sites of existing infections, such as chronic otitis media, dental...

Microbiology and management of brain abscess in children (2004)

Brook, Itzhak

Brain abscess is an uncommon but serious life threatening infection in children. The infection can originate from contiguous sites of existing infections, such as chronic otitis media, dental...

Antimicrobial resistance in the nasopharyngeal flora of children with acute maxillary sinusitis and maxillary sinusitis recurring after amoxicillin therapy (2004)

Brook, Itzhak, Gober, Alan E.

Objective: To investigate the antimicrobial susceptibility of the organisms isolated from the nasopharynx of children who present with acute maxillary sinusitis (AMS) or maxillary sinusitis that...

Antimicrobial resistance in the nasopharyngeal flora of children with acute maxillary sinusitis and maxillary sinusitis recurring after amoxicillin therapy (2004)

Brook, Itzhak, Gober, Alan E.

Objective: To investigate the antimicrobial susceptibility of the organisms isolated from the nasopharynx of children who present with acute maxillary sinusitis (AMS) or maxillary sinusitis that...

Effects of antimicrobial therapy on the microbial flora of the adenoids (2003)

Brook, Itzhak

The core of the adenoids contains polymicrobial aerobic and anaerobic flora and also includes potential respiratory pathogens. Similar flora, although in higher numbers and with a higher frequency of...

Effects of antimicrobial therapy on the microbial flora of the adenoids (2003)

Brook, Itzhak

The core of the adenoids contains polymicrobial aerobic and anaerobic flora and also includes potential respiratory pathogens. Similar flora, although in higher numbers and with a higher frequency of...

Effects of antimicrobial therapy on the microbial flora of the adenoids (2003)

Brook, Itzhak

The core of the adenoids contains polymicrobial aerobic and anaerobic flora and also includes potential respiratory pathogens. Similar flora, although in higher numbers and with a higher frequency of...

Clinical review: Bacteremia caused by anaerobic bacteria in children (2002)

Brook, Itzhak

Abstract This review describes the microbiology, diagnosis and management of bacteremia caused by anaerobic bacteria in children. Bacteroides fragilis , Peptostreptococcus sp., Clostridium sp., and...

Microbiology of polymicrobial abscesses and implications for therapy (2002)

Brook, Itzhak

Abscesses that develop as a result of introduction of the normal flora into a normally sterile body site are often polymicrobial. This review summarizes past studies published by our group on the...

Microbiology of polymicrobial abscesses and implications for therapy (2002)

Brook, Itzhak

Abscesses that develop as a result of introduction of the normal flora into a normally sterile body site are often polymicrobial. This review summarizes past studies published by our group on the...

Effect of amoxicillin and co-amoxiclav on the aerobic and anaerobic nasopharyngeal flora (2002)

Brook, Itzhak, Gober, Alan E.

The effects of co-amoxiclav (AMC) and amoxicillin (AMX) therapy on the nasopharyngeal flora of children with acute otitis media (AOM) were compared. Nasopharyngeal culture for aerobic and anaerobic...

Microbiology of polymicrobial abscesses and implications for therapy (2002)

Brook, Itzhak

Abscesses that develop as a result of introduction of the normal flora into a normally sterile body site are often polymicrobial. This review summarizes past studies published by our group on the...

Effect of amoxycillin with or without clavulanate on adenoid bacterial flora (2001)

Brook, Itzhak, Shah, Kiran

The effect of antimicrobial therapy with amoxycillin (AMX) or co-amoxiclav (AMC) on the adenoid bacterial flora of 45 children with recurrent otitis media (ROM), scheduled for elective adenoidectomy,...

Quinolone therapy in the prevention of endogenous and exogenous infection after irradiation (1994)

Brook, Itzhak, Ledney, G. David

The effect of oral therapy with 6 quinolones, lomefloxacin, ofloxacin, sparfloxacin, temafloxacin, CI-960, and CI-990 in the prevention of post-irradiation bacteraemia and mortality was tested in...

The treatment of irradiated mice with polymicrobial infection caused by Bacteroides fragilis and Escherichia coli (1994)

Brook, Itzhak, Ledney, G. David

The effects on the faecal flora and the efficacies of various antibiotic regimens administered as treatment for a mixed infection caused by Bacteroides fragilis and Escherichia coli in the irradiated...

Effect of antimicrobial therapy on the gastrointestinal bacterial flora, infection and mortality in mice exposed to different doses of irradiation (1994)

Brook, Itzhak, Ledney, G. David

The effect of antimicrobial therapy on gut flora, sepsis, and mortality was investigated in C3H/HeN female mice irradiated with 7.0, 8.0 or 8.5 Gy or 60Co. The antimicrobial agents tested were...

Comparison of cefoxitin, cefotetan and the combination of ampicillin with sulbactam in the therapy of polymicrobial infection in mice (1994)

Brook, Itzhak

The comparative efficacies of cefoxitin, cefotetan and the combination of ampicillin with sulbactam were investigated in mixed aerobic and anaerobic infections of mice. Treatment was administered by...

In-vitro susceptibility and in-vivo efficacy of antimicrobials in the treatment of intraabdominal sepsis in mice (1993)

Brook, Itzhak, Gillmore, James D.

Cefoxitin, cefotetan, cefmetazole, ceftizoxime, imipenem plus cilastatin, ampicillin plus sulbactam and clindamycin alone or combined with gentamicin, ciprofloxacin, ofloxacin or aztreonam were...

Development of infection with Streptococcus bovis and Aspergillus sp. in irradiated mice after glycopeptide therapy (1993)

Brook, Itzhak, Tom, Samuel P., Ledney, G. David

The use of ofloxacin and glycopeptides was evaluated for the treatment of infections arising in C3H/HeN female mice irradiated with 8.3 Gy from a 60Co source. The 21 day regimen began 72 h after...

The concept of indirect pathogenicity by {beta}-lactamase production, especially in ear, nose and throat infection (1989)

Brook, Itzhak

A recent increase in numbers of β-lactamase-producing strains of aerobic and anaerobic Gram-negative bacteria in upper respiratory tract infections has been associated with increased failure rates...

Treatment of patients with acute recurrent tonsillitis due to group A {beta}-haemolytic streptococci: a prospective randomized study comparing penicillin and amoxycillin/clavulanate potassium (1989)

Brook, Itzhak

The failure of penicillin to eradicate Group A β-haemorytic streptococcal tonsillitis may be caused by β-lactamase producing bacteria in the tonsillar tissue. A prospective randomized clinical...

Metronidazole and spiramycin in abscesses caused by Bacteroides spp. and Staphylococcus aureus in mice (1987)

Brook, Itzhak

The activity of metronidazole and spiramycin, singly or in combination, was tested in vitro and also in vivo, in the eradication of infection caused by Bacteroides spp. and Staphylococcus aureus,...

Interaction between penicillin, dlindamycin or metronidazole and gentamicin against species of clostridia and anaerobic and facultatively anaerobic Gram-positive cocci (1985)

Brook, Itzhak, Walker, Richard I.

Seven anaerobic and facultative Gram-positive coca and 12 clostridial species were tested for in-vitro and in-vivo susceptibilities to penicillin, clindamycin, and metronidazole, used singly or in...

In- vivo protection of group A {beta}-haemolytic streptococci from penicillin by {beta}-lactamase-producing Bacteroides species (1983)

Brook, Itzhak, Pazzaglia, Gary, Coolbaugh, James C., Walker, Richard I.

The incidence of persistent group A β-haemolytic streptococci in tonsils, despite penicillin therapy, has increased in recent years. β-Lactamase-producing organisms have previously been recovered...

Aerobic and Anaerobic Microbiology of Surgical-Site Infection Following Spinal Fusion

Brook, Itzhak, Frazier, Edith H.

The aerobic and anaerobic microbiology of surgical-site infections (SSI) following spinal fusion was retrospectively studied. This was done by reviewing the clinical and microbiological records at...

Antimicrobial Therapy for Bacillus anthracis-Induced Polymicrobial Infection in 60Co γ-Irradiated Mice

Elliott, Thomas B., Brook, Itzhak, Harding, Rita A., Bouhaouala, S. Samy, Shoemaker, Michael O., Knudson, Gregory B.

Challenge with both nonlethal ionizing radiation and toxigenic Bacillus anthracis spores increases the rate of mortality from a mixed bacterial infection. If biological weapons, such as B. anthracis...

Clinical review: Bacteremia caused by anaerobic bacteria in children

Brook, Itzhak

This review describes the microbiology, diagnosis and management of bacteremia caused by anaerobic bacteria in children. Bacteroides fragilis, Peptostreptococcus sp., Clostridium sp., and...

Unexplained fever in young children: how to manage severe bacterial infection

Brook, Itzhak

Fever with no clear source of infection in children under 3 years old carries a small but important risk of sepsis and meningitis. This review describes the bacterial causes of such infection and the...

Clindamycin in Treatment of Aspiration Pneumonia in Children

Brook, Itzhak

Twenty-eight patients with anaerobic pleuropulmonary infections were treated with clindamycin alone or clindamycin with gentamicin. Sixteen of the patients presented with pneumonitis, nine with...

Eradication of Streptococcus pneumoniae in the Nasopharyngeal Flora of Children with Acute Otitis Media after Amoxicillin-Clavulanate Therapy

Brook, Itzhak, Gober, Alan E.

Nasopharyngeal cultures were obtained from 60 children with acute otitis media before and after treatment with either 45 or 90 mg of amoxicillin (given as amoxicillin-clavulanate) per kg of body...

Bacteriology of Acute and Chronic Ethmoid Sinusitis

Brook, Itzhak

Aspirates from 26 acutely and 17 chronically infected ethmoid sinuses were studied. Thirty-seven aerobes and 10 anaerobes were recovered from isolates from patients with acute sinusitis....

Efficacy of Penicillin versus Cefdinir in Eradication of Group A Streptococci and Tonsillar Flora

Brook, Itzhak, Foote, Perry A.

Core tonsillar cultures were obtained from 40 children with recurrent tonsillitis treated with either penicillin or cefdinir. Group A beta-hemolytic streptococci were isolated from 11 penicillin- and...

Recovery of Interfering Bacteria in the Nasopharynx following Antimicrobial Therapy of Acute Maxillary Sinusitis with Telithromycin or Amoxicillin-Clavulanate

Brook, Itzhak, Hausfeld, Jeffrey N.

The effect on the nasopharyngeal flora of 7 days of amoxicillin-clavulanate or 5 days of 800 mg once a day was studied in 50 adults with acute sinusitis. The numbers of potential pathogens and...

Bacterial Studies of Peritoneal Cavity and Postoperative Surgical Wound Drainage Following Perforated Appendix in Children

Brook, Itzhak

This study reports bacterial specimens obtained from 112 children presenting with a ruptured appendix. Additional samples were studied from 11 of these patients who developed a postoperative surgical...

Aerobic and Anaerobic Microbiology of Surgical-Site Infection Following Spinal Fusion

Brook, Itzhak, Frazier, Edith H.

The aerobic and anaerobic microbiology of surgical-site infections (SSI) following spinal fusion was retrospectively studied. This was done by reviewing the clinical and microbiological records at...

Antimicrobial Therapy for Bacillus anthracis-Induced Polymicrobial Infection in 60Co γ-Irradiated Mice

Elliott, Thomas B., Brook, Itzhak, Harding, Rita A., Bouhaouala, S. Samy, Shoemaker, Michael O., Knudson, Gregory B.

Challenge with both nonlethal ionizing radiation and toxigenic Bacillus anthracis spores increases the rate of mortality from a mixed bacterial infection. If biological weapons, such as B. anthracis...

Clinical review: Bacteremia caused by anaerobic bacteria in children

Brook, Itzhak

This review describes the microbiology, diagnosis and management of bacteremia caused by anaerobic bacteria in children. Bacteroides fragilis, Peptostreptococcus sp., Clostridium sp., and...

Unexplained fever in young children: how to manage severe bacterial infection

Brook, Itzhak

Fever with no clear source of infection in children under 3 years old carries a small but important risk of sepsis and meningitis. This review describes the bacterial causes of such infection and the...

Clindamycin in Treatment of Aspiration Pneumonia in Children

Brook, Itzhak

Twenty-eight patients with anaerobic pleuropulmonary infections were treated with clindamycin alone or clindamycin with gentamicin. Sixteen of the patients presented with pneumonitis, nine with...

Eradication of Streptococcus pneumoniae in the Nasopharyngeal Flora of Children with Acute Otitis Media after Amoxicillin-Clavulanate Therapy

Brook, Itzhak, Gober, Alan E.

Nasopharyngeal cultures were obtained from 60 children with acute otitis media before and after treatment with either 45 or 90 mg of amoxicillin (given as amoxicillin-clavulanate) per kg of body...

Bacteriology of Acute and Chronic Ethmoid Sinusitis

Brook, Itzhak

Aspirates from 26 acutely and 17 chronically infected ethmoid sinuses were studied. Thirty-seven aerobes and 10 anaerobes were recovered from isolates from patients with acute sinusitis....

Efficacy of Penicillin versus Cefdinir in Eradication of Group A Streptococci and Tonsillar Flora

Brook, Itzhak, Foote, Perry A.

Core tonsillar cultures were obtained from 40 children with recurrent tonsillitis treated with either penicillin or cefdinir. Group A beta-hemolytic streptococci were isolated from 11 penicillin- and...

Recovery of Interfering Bacteria in the Nasopharynx following Antimicrobial Therapy of Acute Maxillary Sinusitis with Telithromycin or Amoxicillin-Clavulanate

Brook, Itzhak, Hausfeld, Jeffrey N.

The effect on the nasopharyngeal flora of 7 days of amoxicillin-clavulanate or 5 days of 800 mg once a day was studied in 50 adults with acute sinusitis. The numbers of potential pathogens and...

Bacterial Studies of Peritoneal Cavity and Postoperative Surgical Wound Drainage Following Perforated Appendix in Children

Brook, Itzhak

This study reports bacterial specimens obtained from 112 children presenting with a ruptured appendix. Additional samples were studied from 11 of these patients who developed a postoperative surgical...

INCREASED REACTIVITY OF MOUSE SPLEEN CELLS SENSITIZED IN VITRO AGAINST SYNGENEIC TUMOR CELLS IN THE PRESENCE OF A THYMIC HUMORAL FACTOR

Carnaud, Claude, Ilfeld, David, Brook, Itzhak, Trainin, Nathan

Unprimed mouse spleen cells cultured in vitro on syngeneic tumor cell monolayers have been previously shown to become specifically sensitized and to mediate cytotoxicity against the same type of...