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  1. Article ; Online: Potent antibacterial activity in surgical wounds with local administration of D-PLEX

    Emanuel, Noam / Kozloski, Goldi A / Nedvetzki, Shlomo / Rosenfeld, Sefi

    European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences

    2023  Volume 188, Page(s) 106504

    Abstract: Despite significant advances in infection control guidelines and practices, surgical site infections remain a substantial cause of morbidity, prolonged hospitalization, and mortality. The most effective component of SSI reduction strategies is the ... ...

    Abstract Despite significant advances in infection control guidelines and practices, surgical site infections remain a substantial cause of morbidity, prolonged hospitalization, and mortality. The most effective component of SSI reduction strategies is the preoperative administration of intravenous antibiotics; however, systemic antibiotics drug exposure diminishes rapidly and may result in insufficient prophylactic activity against susceptible and resistant SSI pathogens at the wound. D-PLEX
    Language English
    Publishing date 2023-06-22
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1154366-8
    ISSN 1879-0720 ; 0928-0987
    ISSN (online) 1879-0720
    ISSN 0928-0987
    DOI 10.1016/j.ejps.2023.106504
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Preclinical In-Vivo Safety and Toxicokinetics of D-PLEX100 in an Abdominal Surgery Incision Model in Juvenile Miniature Swine.

    Ramot, Yuval / Nyska, Abraham / Dvir, Meidan / Nedvetzki, Shlomo / Rosenfeld, Sefi / Emanuel, Noam

    International journal of toxicology

    2023  Volume 43, Issue 1, Page(s) 19–26

    Abstract: D-PLEX100 (D-PLEX) is a novel product candidate made of a polymer-lipid-based matrix (PLEX platform) which contains doxycycline that is being released at a constant rate for 30 days. D-PLEX was developed to prevent surgical site infections, which are a ... ...

    Abstract D-PLEX100 (D-PLEX) is a novel product candidate made of a polymer-lipid-based matrix (PLEX platform) which contains doxycycline that is being released at a constant rate for 30 days. D-PLEX was developed to prevent surgical site infections, which are a major global health challenge. Previous studies have shown its safety in adult humans, adult swine, and adult rabbits. The aim of this study was to assess the toxicity and safety of D-PLEX also in juvenile animals to support future clinical trials in pediatric patients. Yucatan miniature swine were selected as a model, primarily due to their relatively larger mass. D-PLEX or placebo (formulation without doxycycline) was administered locally to abdominal incisions, and the animal's safety parameters were followed for 9 months and compared to sham-control swine. There was no evidence of any systemic safety concern or local toxicity at the incision site in D-PLEX-treated animals. D-PLEX was detected after 1 month and was fully resorbed at the 3-month time point. The surgical incision sites were fully healed at the 6-month time point in all D-PLEX-treated animals. Toxicokinetic (TK) assessments revealed that doxycycline exhibited low C
    MeSH term(s) Animals ; Doxycycline/adverse effects ; Swine, Miniature ; Toxicokinetics
    Chemical Substances Doxycycline (N12000U13O)
    Language English
    Publishing date 2023-10-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1379845-5
    ISSN 1092-874X ; 1091-5818
    ISSN (online) 1092-874X
    ISSN 1091-5818
    DOI 10.1177/10915818231205222
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: D-PLEX500: a local biodegradable prolonged release doxycycline-formulated bone graft for the treatment for peri-implantitis. A randomized controlled clinical study.

    Emanuel, Noam / Machtei, Eli E / Reichart, Malka / Shapira, Lior

    Quintessence international (Berlin, Germany : 1985)

    2020  Volume 51, Issue 7, Page(s) 546–553

    Abstract: Objectives: In the present pilot, multicenter, randomized, single-blinded, controlled study, surgical treatment with or without the administration of D-PLEX500 (a biodegradable prolonged release local doxycycline formulated with β-tricalcium phosphate ... ...

    Abstract Objectives: In the present pilot, multicenter, randomized, single-blinded, controlled study, surgical treatment with or without the administration of D-PLEX500 (a biodegradable prolonged release local doxycycline formulated with β-tricalcium phosphate bone graft) was accessed for the treatment of peri-implantitis.
    Method and materials: Subjects undergoing surgical treatment for intrabony peri-implantitis defects after flap elevation were randomly assigned, to adjunct D-PLEX500 placement group or to control group. Clinical and radiographic parameters were measured at 6 and 12 months.
    Results: Twenty-seven subjects (average age: 64.81 ± 7.61 years) were enrolled; 14 patients (18 implants) were randomized to the test group and 13 (14 implants) to the control group. There was no difference in plaque scores between the groups. There was no difference in the changes of mean periodontal probing depth between the test and control groups between baseline and the 6-month follow-up, whereas statistically significant difference was observed after 12 months' follow-up when analyzed for all sites averaged. There was a statistically significant difference in the changes of clinical attachment levels and radiographic bone levels between the groups between baseline and 12 months. These improvements were demonstrated when analyzed at both implant and subject levels. Only D-PLEX500 treatment led to improved bone levels at both time points. The improvement in bone levels was significant in the D-PLEX500 treatment group already after 6 months, and further improved over the 12-month follow-up. Implants were lost only in the control group (14%).
    Conclusions: D-PLEX500 sustained release local antibiotic formulated with bone filler showed promising results in enabling healing of peri-implantitis lesions. The antibacterial component of the bone graft material might create favorable conditions that enable implant surface decontamination and soft and hard tissue healing over a prolonged period.
    MeSH term(s) Aged ; Alveolar Bone Loss ; Anti-Bacterial Agents ; Bone Transplantation ; Dental Implants ; Doxycycline ; Humans ; Middle Aged ; Peri-Implantitis ; Treatment Outcome
    Chemical Substances Anti-Bacterial Agents ; Dental Implants ; Doxycycline (N12000U13O)
    Language English
    Publishing date 2020-06-04
    Publishing country Germany
    Document type Journal Article ; Multicenter Study ; Randomized Controlled Trial
    ZDB-ID 7436-6
    ISSN 1936-7163 ; 0033-6572
    ISSN (online) 1936-7163
    ISSN 0033-6572
    DOI 10.3290/j.qi.a44629
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Toxicity and Safety Study of D-PLEX

    Ramot, Yuval / Nedvetzki, Shlomo / Rosenfeld, Sefi / Emanuel, Noam / Nyska, Abraham

    Toxicologic pathology

    2019  Volume 47, Issue 4, Page(s) 504–514

    Abstract: Bacterial infections are a common complication after surgical procedures. Therefore, local delivery of antibiotics has been developed, including the use of biodegradable polymers. A newly developed product for prevention of surgical site infections is a ... ...

    Abstract Bacterial infections are a common complication after surgical procedures. Therefore, local delivery of antibiotics has been developed, including the use of biodegradable polymers. A newly developed product for prevention of surgical site infections is a polymer-lipid encapsulation matrix loaded with doxycycline, named D-PLEX
    MeSH term(s) Animals ; Anti-Bacterial Agents/blood ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/therapeutic use ; Anti-Bacterial Agents/toxicity ; Delayed-Action Preparations ; Dose-Response Relationship, Drug ; Doxycycline/blood ; Doxycycline/chemistry ; Doxycycline/therapeutic use ; Doxycycline/toxicity ; Drug Carriers/chemistry ; Female ; Male ; Rabbits ; Sternum/pathology ; Sternum/surgery ; Surgical Wound Infection/drug therapy ; Surgical Wound Infection/pathology ; Survival Analysis ; Tensile Strength ; Toxicokinetics
    Chemical Substances Anti-Bacterial Agents ; Delayed-Action Preparations ; Drug Carriers ; Doxycycline (N12000U13O)
    Language English
    Publishing date 2019-04-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 841009-4
    ISSN 1533-1601 ; 0192-6233
    ISSN (online) 1533-1601
    ISSN 0192-6233
    DOI 10.1177/0192623319837887
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: D-PLEX

    Ramot, Yuval / Nedvetzki, Shlomo / Rosenfeld, Sefi / Rousselle, Serge D / Nyska, Abraham / Emanuel, Noam

    Toxicologic pathology

    2020  Volume 48, Issue 5, Page(s) 677–685

    Abstract: Surgical site infections (SSIs) are a common surgical-related complication. To avoid these complications, a new biodegradable polymer-lipid encapsulation matrix that provides controlled release of doxycycline (doxycycline/polymer-lipid encapsulation ... ...

    Abstract Surgical site infections (SSIs) are a common surgical-related complication. To avoid these complications, a new biodegradable polymer-lipid encapsulation matrix that provides controlled release of doxycycline (doxycycline/polymer-lipid encapsulation matrix [D-PLEX]) has been developed. The aim of this comprehensive study was to evaluate the potential safety of D-PLEX
    MeSH term(s) Animals ; Doxycycline/administration & dosage ; Drug Delivery Systems ; Humans ; Models, Animal ; Surgical Wound Infection ; Swine ; Swine, Miniature
    Chemical Substances Doxycycline (N12000U13O)
    Language English
    Publishing date 2020-06-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 841009-4
    ISSN 1533-1601 ; 0192-6233
    ISSN (online) 1533-1601
    ISSN 0192-6233
    DOI 10.1177/0192623320928902
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Reduction in surgical site infections by localized administration with D-PLEX

    Senagore, Anthony J / Stark, Yafit / Belotserkovsky, Olga / Reichert, Malka / Wasserberg, Nir / Tulchinsky, Hagit / Segev, Lior / Zmora, Oded / Kozloski, Goldi A / Emanuel, Noam

    American journal of surgery

    2022  Volume 225, Issue 3, Page(s) 485–488

    Abstract: Background: D-PLEX: Patients and methods: A post-hoc analysis of a previously reported prospective randomized trial assessing D-PLEX: Results: The overall incidence of SSI was significantly lower for the D-PLEX: Conclusions: D- ... ...

    Abstract Background: D-PLEX
    Patients and methods: A post-hoc analysis of a previously reported prospective randomized trial assessing D-PLEX
    Results: The overall incidence of SSI was significantly lower for the D-PLEX
    Conclusions: D-PLEX
    MeSH term(s) Humans ; Surgical Wound Infection/epidemiology ; Surgical Wound Infection/prevention & control ; Surgical Wound Infection/etiology ; Anti-Bacterial Agents/therapeutic use ; Prospective Studies ; Colorectal Surgery/adverse effects ; Risk Factors ; Antibiotic Prophylaxis
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2022-11-23
    Publishing country United States
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 2953-1
    ISSN 1879-1883 ; 0002-9610
    ISSN (online) 1879-1883
    ISSN 0002-9610
    DOI 10.1016/j.amjsurg.2022.11.021
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Local prolonged release of antibiotic for prevention of sternal wound infections postcardiac surgery-A novel technology.

    Kachel, Erez / Moshkovitz, Yaron / Sternik, Leonid / Sahar, Gideon / Grosman-Rimon, Liza / Belotserkovsky, Olga / Reichart, Malka / Stark, Yafit / Emanuel, Noam

    Journal of cardiac surgery

    2020  Volume 35, Issue 10, Page(s) 2695–2703

    Abstract: Introduction: Sternal wound infection (SWI) is a devastating postcardiac surgical complication. D-PLEX: Method: Eighty-one patients were enrolled in a prospective single-blind randomized controlled multicenter study. Sixty patients were treated with ... ...

    Abstract Introduction: Sternal wound infection (SWI) is a devastating postcardiac surgical complication. D-PLEX
    Method: Eighty-one patients were enrolled in a prospective single-blind randomized controlled multicenter study. Sixty patients were treated with both D-PLEX and standard of care (SOC) and 21 with SOC alone. Both groups were followed 6 months for safety endpoints. SWI was assessed at 90 days.
    Results: No SWI-related serious adverse events (SAEs) occurred in either group. The mean plasma C
    Conclusion: D-PLEX was found to be safe for use in cardiac surgery patients. By providing localized prophylactic prolonged release of broad-spectrum antibiotics, D-PLEX has the potential to prevent SWI postcardiac surgery and long-term postoperative hospitalization, reducing high-treatment costs, morbidity, and mortality.
    MeSH term(s) Aged ; Anti-Bacterial Agents/administration & dosage ; Anti-Bacterial Agents/pharmacokinetics ; Antibiotic Prophylaxis ; Cardiac Surgical Procedures/adverse effects ; Delayed-Action Preparations/therapeutic use ; Drug Liberation ; Female ; Humans ; Male ; Middle Aged ; Prospective Studies ; Single-Blind Method ; Sternotomy/adverse effects ; Sternum ; Surgical Wound Infection/prevention & control
    Chemical Substances Anti-Bacterial Agents ; Delayed-Action Preparations
    Language English
    Publishing date 2020-08-02
    Publishing country United States
    Document type Journal Article ; Multicenter Study ; Randomized Controlled Trial
    ZDB-ID 639059-6
    ISSN 1540-8191 ; 0886-0440
    ISSN (online) 1540-8191
    ISSN 0886-0440
    DOI 10.1111/jocs.14890
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Real-time monitoring of E. coli O157 and Salmonella enterica serovar Typhimurium in water using ultrasound and latex-based immunoassay

    Bavli, Danny / Emanuel, Noam / Barenholz, Yechezkel

    Analytical methods. 2013 Dec. 19, v. 6, no. 2

    2013  

    Abstract: This study aimed at evaluating real-time, low-cost detection and quantification of bacteria, exemplified by E. coli O157 and Salmonella enterica serovar Typhimurium in aqueous systems. The approach takes advantage of the well-established latex-based ... ...

    Abstract This study aimed at evaluating real-time, low-cost detection and quantification of bacteria, exemplified by E. coli O157 and Salmonella enterica serovar Typhimurium in aqueous systems. The approach takes advantage of the well-established latex-based immunoassay (LBI) and combines it with bacteria trapping and measuring using ultrasound. The results obtained demonstrate the utility of combining ultrasound standing waves of mean energy density 10 W cm−2, acoustic amplitude 100 kPa, and a laminar flow rate of the medium of 60 μl min−1 to trap selectively E. coli O157 or Salmonella enterica serovar Typhimurium (S. typhimurium) bacteria attached to 300–400 nm-antibody-coated latex particles. The ultrasound velocity measurements enabled a sensitivity down to 1.6 × 104 colony-forming units (CFU) ml−1 for E. coli O157 and 4.0 × 104 CFU ml−1 for S. typhimurium, compared to a sensitivity of 8.36 × 105 CFU ml−1 for E. coli O157 and 6.4 × 106 CFU ml−1 for S. typhimurium obtained by the standard LBI. The assay sensitivity can be further improved by use of various fluorescence methodologies.
    Keywords Escherichia coli O157 ; Salmonella Typhimurium ; acoustics ; analytical methods ; bacteria ; energy density ; fluorescence ; immunoassays ; laminar flow ; latex ; monitoring ; ultrasonics
    Language English
    Dates of publication 2013-1219
    Size p. 395-403.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2515210-5
    ISSN 1759-9679 ; 1759-9660
    ISSN (online) 1759-9679
    ISSN 1759-9660
    DOI 10.1039/c3ay41135d
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: A lipid-and-polymer-based novel local drug delivery system—BonyPid™: From physicochemical aspects to therapy of bacterially infected bones

    Emanuel, Noam / Rosenfeld, Yosef / Cohen, Or / Applbaum, Yaakov H / Segal, David / Barenholz, Yechezkel

    Journal of controlled release. 2012 June 10, v. 160, no. 2

    2012  

    Abstract: Bacterial infection of bone may result in bone destruction and is difficult to cure due to poor accessibility to bone of systemically-administrated antibiotic and poor performance of currently available local antibacterial treatments. We developed a ... ...

    Abstract Bacterial infection of bone may result in bone destruction and is difficult to cure due to poor accessibility to bone of systemically-administrated antibiotic and poor performance of currently available local antibacterial treatments. We developed a novel local drug delivery system based on self-assembly of specific familiar lipids and polymers that encapsulate the desired drug (exemplified by doxycycline). The entrapped doxycycline present in the anhydrous environment of the formulation is fully protected from long-term water-exposure-related degradation. The fine coating of the tricalcium phosphate bone filler by this doxycycline-containing formulation (BonyPid™) is capable of releasing intact and active drug at a steady, zero-order rate for a predetermined period of up to 30days and in amount sufficient to achieve therapy potentially capable of eliminating the contaminating bacteria. Therefore a clinical evaluation is proposed for testing the efficacy and toxicity of BonyPid for therapy of bacterial bone infections.
    Keywords bacteria ; bacterial infections ; bones ; coatings ; doxycycline ; drug delivery systems ; drugs ; lipids ; physicochemical properties ; polymers ; toxicity ; tricalcium phosphate
    Language English
    Dates of publication 2012-0610
    Size p. 353-361.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 632533-6
    ISSN 1873-4995 ; 0168-3659
    ISSN (online) 1873-4995
    ISSN 0168-3659
    DOI 10.1016/j.jconrel.2012.03.027
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: A lipid-and-polymer-based novel local drug delivery system--BonyPid™: from physicochemical aspects to therapy of bacterially infected bones.

    Emanuel, Noam / Rosenfeld, Yosef / Cohen, Or / Applbaum, Yaakov H / Segal, David / Barenholz, Yechezkel

    Journal of controlled release : official journal of the Controlled Release Society

    2012  Volume 160, Issue 2, Page(s) 353–361

    Abstract: Bacterial infection of bone may result in bone destruction and is difficult to cure due to poor accessibility to bone of systemically-administrated antibiotic and poor performance of currently available local antibacterial treatments. We developed a ... ...

    Abstract Bacterial infection of bone may result in bone destruction and is difficult to cure due to poor accessibility to bone of systemically-administrated antibiotic and poor performance of currently available local antibacterial treatments. We developed a novel local drug delivery system based on self-assembly of specific familiar lipids and polymers that encapsulate the desired drug (exemplified by doxycycline). The entrapped doxycycline present in the anhydrous environment of the formulation is fully protected from long-term water-exposure-related degradation. The fine coating of the tricalcium phosphate bone filler by this doxycycline-containing formulation (BonyPid™) is capable of releasing intact and active drug at a steady, zero-order rate for a predetermined period of up to 30 days and in amount sufficient to achieve therapy potentially capable of eliminating the contaminating bacteria. Therefore a clinical evaluation is proposed for testing the efficacy and toxicity of BonyPid for therapy of bacterial bone infections.
    MeSH term(s) Animals ; Anti-Bacterial Agents/administration & dosage ; Anti-Bacterial Agents/therapeutic use ; Calcium Phosphates/chemistry ; Chemical Phenomena ; Coated Materials, Biocompatible ; Delayed-Action Preparations ; Doxycycline/administration & dosage ; Doxycycline/therapeutic use ; Drug Compounding ; Drug Delivery Systems ; Drug Stability ; Female ; Lactic Acid/chemistry ; Microbial Sensitivity Tests ; Osteomyelitis/diagnostic imaging ; Osteomyelitis/drug therapy ; Osteomyelitis/microbiology ; Phosphatidylcholines/chemistry ; Polyglycolic Acid/chemistry ; Rabbits ; Radiography ; Staphylococcal Infections/diagnostic imaging ; Staphylococcal Infections/drug therapy ; Staphylococcal Infections/microbiology ; Staphylococcus aureus/drug effects
    Chemical Substances Anti-Bacterial Agents ; Calcium Phosphates ; Coated Materials, Biocompatible ; Delayed-Action Preparations ; Phosphatidylcholines ; polylactic acid-polyglycolic acid copolymer ; Polyglycolic Acid (26009-03-0) ; Lactic Acid (33X04XA5AT) ; tricalcium phosphate (K4C08XP666) ; Doxycycline (N12000U13O)
    Language English
    Publishing date 2012-06-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 632533-6
    ISSN 1873-4995 ; 0168-3659
    ISSN (online) 1873-4995
    ISSN 0168-3659
    DOI 10.1016/j.jconrel.2012.03.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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