Scientific Program

Conference Series Ltd invites all the participants across the globe to attend 5th International Conference on Antibiotics & Antibiotic Resistance Orlando, Florida, USA.

Day :

  • Alternative Strategies for Antimicrobial Resistance Worldwide | Role of Long Term Antibiotics & Antimicrobial in Diseases | Antibiotics | Alternative to Antibiotics | Formulations and NNDS | Pharmaceutical Research and Development | Drug Discovery and NCEs
Location: Orlando, USA
Speaker

Chair

Karyn I Cotta

South University, USA

Speaker

Co-Chair

Pratima Tatke

Shreemati Nathibai Damodar Thackersey Women’s University, India

Session Introduction

Abha Doshi

MET Institute of Pharmacy, India

Title: Gastro-retentive drug delivery systems- An Insight

Time : 12:30-12:55

Speaker
Biography:

Abha Doshi is working as a Principal and Professor in MET Institute of Pharmacy, Mumbai, India. She has started her career as a Production Supervisor in Ranbaxy Laboratories Ltd., from January 1987 to January 1990. Then she joined MET Institute of Pharmacy in1996 and later promoted to professor and Principal. She guided many students on gastro-retentive drug delivery systems, nanoparticles, mucoadhesive drug delivery systems etc. She has presented sixteen research papers in national and international seminars/conferences and has published twenty two articles in various national and international journals. She has applied for patent for buccal patches for Aphthous ulcer. 

Abstract:

Some of the drugs get absorbed from a particular absorption site in the GI tract i.e., they have absorption window like stomach or upper part of the intestine. These drugs do not get absorbed completely when administered in the form of a typical controlled drug delivery system. Gastro-retentive drug delivery systems (GRDDS) can be used as carriers for drugs with a so-called absorption window. It is obtained by retaining dosage form into stomach and drug is being released at controlled manner to the specific site either in stomach, duodenum or intestine. Several gastro-retentive drug delivery approaches being designed and developed including high density system that is retained in the bottom of the stomach, low density (floating) systems that causes buoyancy in gastric fluid, mucoadhesive systems that causes bioadhesion to stomach mucosa, unfoldable, extendible or swellable systems which limits emptying of the dosage form through the pyloric sphincter of stomach, superporous hydrogel systems and magnetic systems etc. Floating drug delivery systems (FDDS) or hydrodynamically controlled systems are lowdensity systems that have sufficient buoyancy to float over the gastric content and remain buoyant in the stomach without affecting the gastric emptying rate for a prolonged period of time. While the system is floating on the gastric contents, the drug is released slowly at the desired rate from the system. Floating tablets of cinnarizine, losartan potassium, famotidine, and norfloxacin were developed. Superporous hydrogels are swellable systems with a pore size greater than 100 microns. These systems instantly swell in the stomach and maintain their integrity in the harsh stomach environment, while releasing the pharmaceutically active ingredient. Supergel hydrogel composite of Zn Carnosine and Cinnarizine were formulated. They were evaluated for their physicochemical characteristics namely floating lag time, total floating time, etc., swelling index and percent drug release.

Sheila Connelly

Synthetic Biologics Inc., USA

Title: Protection of the gut microbiome from antibiotic-mediated damage

Time : 13:55-14:20

Speaker
Biography:

Sheila Connelly is Vice President, Research, at Synthetic Biologics, Inc., a clinical-stage company focused on gut microbiome therapeutics to protect and restore patient health. She has over 20 years of experience in the biotechnology and pharmaceutical industries ranging from start-ups to large pharma. She served as VP Research at GrayBug Vision, Inc., a Johns Hopkins University spinout and cofounded Advanced Vision Therapies, Inc., both ocular therapeutic startups. She served as Senior Director of Translational Research with Intrexon, Corp., and as Group Leader at Genetic Therapy, Inc., a Novartis Company. She published over 40 peer-reviewed scientific articles and has numerous research grant awards and issued patents. She earned her Ph.D. in Molecular Biology from Columbia University and completed postdoctoral training under an awarded NSF fellowship at the Friedrich Miescher Institute for Biomedical Research in Basel, Switzerland.

Abstract:

Beta-lactamases, generally considered the “enemy”, are natural, bacterial-derived enzymes that degrade betalactam antibiotics, confer antibiotic resistance, and dramatically complicate the treatment of bacterial infections. Synthetic Biologics, Inc. has harnessed the potent antibiotic hydrolyzing power of this enzyme class to develop a prophylactic intervention intended to inactivate selected beta-lactam antibiotics in the GI tract to protect the gut microbiome and to prevent the emergence of antimicrobial resistance (AMR). SYN-004, ribaxamase, is intended for use with IV penicillins and cephalosporins. SYN-004, formulated for oral delivery into enteric-coated pellets to protect the enzyme from stomach acid, is released in the upper small intestine at pH>5.5. Animal and human studies demonstrated that ribaxamase degraded antibiotics in the upper GI tract protected the gut microbiome, and reduced AMR. Further examination of this prevention approach, in a phase 2b clinical study, demonstrated that ribaxamase significantly reduced Clostridium difficile infection in high-risk patients who were receiving ceftriaxone for treatment of a lower respiratory tract infection without compromising pulmonary infection control. A new ribaxamase formulation, called SYN-007, was engineered for release in the lower small intestine distal to the site of oral amoxicillin systemic absorption. SYN-007 protected the gut microbiome from damage caused by oral amoxicillin without affecting amoxicillin systemic absorption in dogs. Antibiotic inactivation represents a promising potential new treatment paradigm for the preservation of the gut microbiome and reduction of AMR. SYN-007 is intended to expand beta-lactamasemediated microbiome protection to oral as well as IV beta-lactam antibiotics. 

Biography:

Zenat Ahmed Khired is an Assistance Professor of orthopedic, hip and knee arthroplasty. He is a Head of Basic Medical Sciences, Princes Nourah bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia. Since 2016 he is a Block Chair of the orthopedic block (Surg452). 

Abstract:

Introduction: Patellofemoral pain syndrome (PFPS) is the most common presentation of knee pain to sports medicine and orthopaedic clinics among adolescents and young adults. It accounts for 20–40% of all knee problems in active young adults. The purpose of this study was to estimate the prevalence of PFPS in Princess Nourah bint Abdulrahman University (PNU) Students and their impact on their daily activity.
Methods: This study is a crosssectional survey that evaluated 1100 PNU Female students between 18 and 30years of age, who agreed to participate in the study. We used two questionnaires in this study, Kujala Patellofemoral Scale (KPS) and LEFS score.
Results: The average age was 20.7±1.8years, fourteen out of 51 participants with poor/ fair Kujala score aged less than 20years (27.5%), however, no statistically significant association was detected between age and Kujala severity score (p=0.59), using the minimal cut-off of 9 points in LEFS scores showed that all participants had scored 10 and more. Clinically and statistically significant difference in LEFS scores was confirmed among the three Kujala score groups. The higher the Kujala score, the better the LEFS score (r=0.58, p<0.01). 

Speaker
Biography:

Angel Josabad Alonso Castro is a Professor at the University of Guanajuato, Mexico since 2015. He has obtained his doctorate in the National Autonomous University of Mexico in 2012. He has published 66 research articles in journals indexed in the Journal of Citation Reports and published 4 book chapters in international books. His research articles have been cited 772 times (h index=17). His research interests are the pharmacology of natural products and ethnobiological studies. He is reviewer of the following journals: Journal of Ethnopharmacology, Phytomedicine, BMC Complementary and Alternative Medicine, Biomedicine and Pharmacotherapy, Asian Pacific Journal of Tropical Medicine, and Revista Brasileira de Farmacognosia, among other journals. 

Abstract:

Purpose: The purpose of this work was to evaluate the antidiarrheal, vasorelaxant, sedative, anxiolytic, and antidepressant actions of tilifodiolide (TFD), a natural diterpene obtained from Salvia tiliifolia Vahl (Lamiaceae).
Methods: The antidiarrheal activity of 1-50mg/kg TFD was assessed with the castor oil test, the charcoal meal test, and the castor oil induced-enteropooling. The relaxation effect of TFD (0.9-298µM) was carried out using smooth muscle tissues from rats, and its mechanism of action was evaluated using different inhibitors involved in muscle relaxation. The sedative, anxiolytic, and antidepressant effects of 1-100mg/kg TFD were calculated with the pentobarbital-induced sleeping time assay, the elevated plus maze test, the light-dark test, the cylinder exploratory test, and the forced swimming test.
Key findings: TFD exhibited anti-diarrheal activity (ED50=10.62mg/kg p.o.) and vasorelaxant effects (EC50=48±3.51µM). The coadministration of TFD with L-NAME or ODQ reverted the vasorelaxant action exposed by TFD alone. TFD exerted anxiolytic activity in all tests and decreased the time of immovability in the forced swimming test. 
Conclusions: TFD exerted antidiarrheal activity by decreasing the intestinal fluid accumulation, and vasorelaxant effects, mediated by NO and cGMP, in isolated aortic rings with intact-endothelium. TFD showed anxiolytic and antidepressant effects in mice. 

Pratima Tatke

Shreemati Nathibai Damodar Thackersey Women’s University, India

Title: Development and evaluation of liposomes containing Gallic acid for enhanced anti-inflammatory and antioxidant activity

Time : 15:10-15:35

Speaker
Biography:

Pratima Tatke is presently working as the Principal of CU Shah College of Pharmacy, Shreemati Nathibai Damodar Thackersey  Women’s University, Mumbai, India. She has 31years of teaching and research experience in the field of Pharmaceutical Sciences. Her expertise is in Research on medicinal plants such as Herbal product development, Bioactivity-guided extraction, and isolation of phytoconstituents and analysis of herbal products using newer pharmaceutical techniques. Thus, combining traditional knowledge with modern technologies to create new pathways for improving healthcare. She has more than 70 publications, contributed 2 chapters in books, 5 patents to her credit. 10 students have been awarded a doctoral degree and more than 50 students received M.Pharm. degree under her supervision. 

Abstract:

Introduction: Ayurveda consists of two words Ayu means ‘life’ or ‘time from birth to death’ and Veda means ‘knowledge’ or ‘learning’. It is an ancient and traditional healthcare system of Indian medicine which has been developed to modern practice as “Tradition to Trend”. The aim of the present project is to combine modern technologies with traditional knowledge of Ayurveda by preparing a liposomal formulation containing gallic acid. The formulations containing Gallic acid available today face problem of rapid elimination from the body. Thus the objective of the project is to incorporate gallic acid into a novel formulation such as liposomes by using phospholipid to prolong its retention time and increase bioavailability as well as the efficacy of the formulation.
Methodology & Theoretical Orientation: Ethanol injection method was used for formulation development of liposomes. After optimization of the process parameters, gallic acid loaded liposomal formulation was successfully developed. The optimized dispersion exhibited enhanced anti-inflammatory activity by carrageenan-induced paw edema method when compared with gallic acid alone. The in-vivo antioxidant activity of gallic acid loaded liposomes showed that the optimized liposomal formulation increased the activity of catalase, superoxide dismutase, reduced glutathione and glutathione peroxidase and decreased the serum level of malondialdehyde.
Conclusion & Significance: The liposomal formulation containing gallic acid was developed successfully and was found to be stable after 3months. The developed liposomal formulation showed statistically significant anti-inflammatory and antioxidant activity as compared to gallic acid alone. Thus, the liposomal formulation is improving the penetration of gallic acid and thus giving enhanced activity.

Speaker
Biography:

Pratima Tatke is presently working as the Principal of CU Shah College of Pharmacy, Shreemati Nathibai Damodar Thackersey  Women’s University, Mumbai, India. She has 31years of teaching and research experience in the field of Pharmaceutical Sciences. Her expertise is in Research on medicinal plants such as Herbal product development, Bioactivity-guided extraction, and isolation of phytoconstituents and analysis of herbal products using newer pharmaceutical techniques. Thus, combining traditional knowledge with modern technologies to create new pathways for improving healthcare. She has more than 70 publications, contributed 2 chapters in books, 5 patents to her credit. 10 students have been awarded a doctoral degree and more than 50 students received M.Pharm. degree under her supervision. 

Abstract:

Introduction: Ayurveda consists of two words Ayu means ‘life’ or ‘time from birth to death’ and Veda means ‘knowledge’ or ‘learning’. It is an ancient and traditional healthcare system of Indian medicine which has been developed to modern practice as “Tradition to Trend”. The aim of the present project is to combine modern technologies with traditional knowledge of Ayurveda by preparing a liposomal formulation containing gallic acid. The formulations containing Gallic acid available today face problem of rapid elimination from the body. Thus the objective of the project is to incorporate gallic acid into a novel formulation such as liposomes by using phospholipid to prolong its retention time and increase bioavailability as well as the efficacy of the formulation.
Methodology & Theoretical Orientation: Ethanol injection method was used for formulation development of liposomes. After optimization of the process parameters, gallic acid loaded liposomal formulation was successfully developed. The optimized dispersion exhibited enhanced anti-inflammatory activity by carrageenan-induced paw edema method when compared with gallic acid alone. The in-vivo antioxidant activity of gallic acid loaded liposomes showed that the optimized liposomal formulation increased the activity of catalase, superoxide dismutase, reduced glutathione and glutathione peroxidase and decreased the serum level of malondialdehyde.
Conclusion & Significance: The liposomal formulation containing gallic acid was developed successfully and was found to be stable after 3months. The developed liposomal formulation showed statistically significant anti-inflammatory and antioxidant activity as compared to gallic acid alone. Thus, the liposomal formulation is improving the penetration of gallic acid and thus giving enhanced activity.

Sarah K Amer

Arab Academy for Science, Technology and Maritime Transport, Egypt

Title: Rapid Antigen Strep A Test (RADT) impact on antibiotic prescribing behavior in acute pharyngeal infection

Time : 15:35-16:00

Speaker
Biography:

Sarah K Amer earned her bachelor’s degree with honors at the Faculty of Pharmacy, Alexandria University, Egypt in 2012. She currently works as an Assistant Lecturer of Pharmaceutics in the Arab Academy for Science and Technology-AAST Alexandria, Egypt. She has a master’s degree in Biomedical Informatics and Medical Statistics from the Medical Research Institute, Egypt. She also earned a Microbiology diploma from the High Institute of Public Health in Egypt. Currently, she is enrolled in the Pharmaceutics Ph.D. program at the Faculty of Pharmacy, Alexandria University, Egypt. Over the course of the last two years, she disseminated researches in pharmaceutical drug-delivery systems and pharmacy practices through journal publication (Journal of Microbial and Biochemical Technology) and conferences participations (4th World Congress and Expo on Applied Microbiology & 2nd International Conference on Food Microbiology in Madrid Spain 2017 and Dubai International and Technologies Conference & Exhibition DUPHAT in Dubai 2018 and 2017). 

Abstract:

Acute bacterial pharyngitis is one of the major common diseases accounting for high outpatient visits rates. It is caused by Streptococcus pyogenes (group A betahemolytic); gram-positive cocci containing the Lancefield Group A antigen. Antibiotic prescriptions for pharyngitis have been estimated for increased health costs. It is challenging to distinguish between viral and bacterial pharyngeal infection on sight in outpatient clinics as traditional bacterial pharyngeal identification procedures require almost 24 to 48 hours. However, other approaches as the Rapid Response Strep A Test Strip (RADT) provides results within 5 minutes. The test uses specific antibodies to rapidly, qualitatively and selectively detect the presence of Strep A antigen in throat swab specimens. The study assessed the use of RADT and their impact on antibiotics prescribing behavior of physicians in outpatient clinics in the Ministry of Health hospitals in Alexandria, Egypt. It also studied the barriers hindering the use of RADTs. The study revealed that the physicians’ compliance regarding their use of RADT varied according to their different qualifications’ degrees. Bachelor’s degree physicians were the most to use the RADT resulting in the highest significant decrease in antibiotics prescribing rate from 82.5% to 20% (p=0.002). Followed by master’s degree physicians; they also showed a significant reduction from 92% to 65.7% (p=0.017). A borderline acceptable decline from 86.7% to 80% (p=0.056) was seen among the Ph.D. physicians; they were the least group utilizing RADT as they mainly relied on their clinical experience claiming that the test detects only one bacterium for a positive result, which was considered as the main barrier limiting their use of RADT. However, the study achieved a significant decrease in antibiotics prescription in outpatient clinics attributed to the availability of RADT. Conclusively, RADT could be a reliable tool to ensure bacterial diagnosis through differentiation between viral and bacterial infections. 

Speaker
Biography:

Jacob Adegboyega Kolawole, Ph.D., FPSN, FPCPharm. FIPAN, completed his Ph.D. at the age of 38years from the Ahmadu Bello University, Zaria and The Robert Gordon, University, Aberdeen, UK (1996). He is the Dean, Faculty of Pharmaceutical Sciences, University of Jos and Consultant to West African Health Organization, on development of guidelines and training manuals for, Pharmaceutical Finished products; Pharmaceutical Raw Materials; Standard Operating Procedures for Laboratories; Bioavalability /Bioequivalent. He has more than 40 publications in international journals. 

Abstract:

This study investigates the effect of a herbal preparation (‘Goko’ Cleanser), on the pharmacokinetic profile of orally administered rifampicin in Swiss albino male rats. The in-vivo study was carried out in three phases. In phase, I only Rifampicin (20mg/kg body) was orally administered to rats and in phase II, rifampicin and Goko Cleanser (30ml/kg body weight) were concurrently administered and in phase III Goko Cleanser was administered for 6 days before Rifampicin. Blood samples were collected from rats in each group at 0, 1, 2, 3, 6, 9 and 12hours in each phase and concentration determined by the spectrophotometric method. Pharmacokinetics parameters determined include Cmax, Tmax, t1/2α, ClT, AUC0-9, AUC 0-∞, t1/2β and kβ. The in-silico studies were done by docking molecules contained in the herbal cleanser into rifampicin binding site on the pregnane X receptor (PXR). The result showed rifampicin pharmacokinetics profile to be in line with previous reports. Goko Cleanser significantly (P<0.05, 0<0.01) increase the Cmax, Tmax, AUC0-9, AUC 0-∞, and t1/2β but decrease ClT, when administering concurrently with Rifampicin (Phase II). Goko Cleanser significantly (P<0.05) decrease the Cmax, Tmax, t1/2α, AUC0-9, AUC 0-∞, and t1/2β but increase ClT when Rifampicin was administered after 6days of taking Goko Cleanser (Phase III). In-silico docking results showed a significant interaction of Goko Cleanser constituents with active site binding residues and complex formation between constituents of Goko cleanser and rifampicin when administered together. Taking herbal preparations such as “Goko cleanser” with rifampicin at the same or within a week should be avoided. 

Biography:

Ermias Mergia Terefe is a registered expert pharmacist with Masters of Science degree in Pharmacology from Addis Ababa University, department of Pharmacology. He has also completed postgraduate diploma in curriculum design and development from Open University of Tanzania. He is lecturer in the pharmacy program of the School of pharmacy and health science at the United States International University-Africa, Nairobi, Kenya, a position he assumed on September 1, 2018. He has more than 14 year’s professional industry experiences.  Prior to joining USIU-Africa he was Lecturer (later promoted to Assistant Professor) of Pharmacology at Adama Hospital Medical College (AHMC), Ethiopia, where he lectured various pharmacology modules for medicine students. Previously he was assistant lecturer and department head at Rift Valley University where he led the pharmacy department and lectured pharmacology and related courses for pharmacy, nursing & public health students. He also served as hospital pharmacist at Medianialem general hospital, Ethiopia and Education and Training Officer at USAID funded Strengthening Human Resource for Health (S-HRH) project in Jhpiego-Ethiopia, where he supported more than 10 universities in improving quality of health professional’s education. He has served as head of the research, project and professional development (RPPD) committee of Ethiopian Pharmaceutical association (EPA).

Abstract:

Background: Spread and emergence of antimalarial drug resistance is the major challenge that endangers all the recent gains in malaria control. Medicinal plants are the key source of new effective antimalarials. Verbascum sinaiticum is commonly used the traditional medicinal plant in many parts of Africa including Ethiopia for treatment of malaria.
Methods: This study attempted to evaluate the in-vivo antimalarial activity of 80% methanol leaf extract of the plant in mice infected with Plasmodium berghei ANKA strain. To this effect, various doses (100, 200, 400mg/kg) of the extract were evaluated for the antimalarial effect using the fourday suppressive, curative and prophylactic tests. Parameters, including percent parasitemia, survival time, body weight, body temperature and packed cell volume (PCV) were determined using standard procedures.
Results: A significant (p<0.001) maximum parasite suppression of 51.34% was observed with 400mg/kg of the extract, in early infection. On the other hand, a significant parasite suppression was observed by the extract in the curative test with 400mg/kg (40.71%, p<0.001) being the highest. In the prophylactic test, 100, 200, and 400mg/kg of the extract produced 23.31%, 39.90% and 61.81% parasite suppression, respectively. In addition, the standard produced significant parasitemia suppression in all tests. In general, the extract has shown considerable invivo antimalarial properties with outstanding prophylactic activity. The phytochemical screening of the extract showed the presence of alkaloids, steroids, tannins, phenols, and flavonoids. The findings suggest that V. sinaiticum contain active phytochemicals that could potentially be a lead compound in the search for new antimalarials. 

Shauroseni Palchoudhuri

Herbicure Healthcare Bio-Herbal Research Foundation, India

Title: In-vitro and In-vivo analyses of an antidepressant compound as a highly potent antimicrobial agent

Time : 17:10-17:35

Biography:

Shauroseni Palchoudhuri is a research professional with 5 years’ experience of working in the areas of infectious diseases, antimicrobial resistance and novel antimicrobial search including the development of in-vitro screening platforms and evaluation in animal models. She completed her Ph.D. from Jadavpur University, India (2017). She is the author of 14 research articles published in international peer-reviewed journals. She also received awards for presenting novel findings in national and international conferences. She is a skilled microbiologist with a passion for research for the hope of better therapeutic advances

Abstract:

Statement of the problem: According to the World Health Organization infectious diseases cause almost 50% of all deaths in both developed and developing countries due to the emergence of multi-drug resistant pathogens. Although new antibiotics are being reported, the speedy appearance of mutations and acquisition of drug resistance plasmids restrict their usage. However, based on the property of multiplicity of actions in drugs, several researchers have evaluated the significant antimicrobial property in drugs belonging to different pharmacological classes. These have been designated as “nonantibiotics”. Intensive studies reveal that the phenothiazine group of chemotherapeutics, possessing three benzene rings along with a halogen moiety in their chemical structure, is the most active class of non-antibiotics. The present study describes a detailed investigation of antimicrobial action of the antidepressant drug doxepin which bears a close structural relationship with a phenothiazine.
Methodology: Minimum Inhibitory Concentration (MIC) of doxepin was determined against 250 strains of grampositive and gram-negative bacteria following international standard guidelines. Tests for synergism were performed between this antidepressant and known antibiotics by disc diffusion method. For in-vivo tests, doxepin was injected intraperitoneally into albino mice at different concentrations and challenged with virulent pathogen Salmonella enterica Serovar Typhimurium.
Findings: Staphylococci and Vibrios were highly sensitive to the drug, following moderate sensitivity in salmonellae and shigellae. Doxepin exhibited effective synergism with chloramphenicol and tetracycline and it is confirmed with the fractional inhibitory concentration index of 0.5 and 0.375 of the respective duo. Doxepin also manifested significant protection to the challenged mice (P<0.001) and potentially reduced the infection in internal organs.
Conclusion & Significance: Thus, the present study suggests that doxepin has the potential for being developed into a powerful antibacterial agent, the efficacy of which may be enhanced further with a suitable synergistic combination. 

Speaker
Biography:

Supamas Napavichayanun has her expertise in evaluation and passion in a wound healing agent, especially silk sericin. Her research experience has ranged from protein including silk proteins and biomaterials. She also did clinical researches in the area of dermatology especially materials for wound healing application. 

Abstract:

Introduction: One of the most popular topical wound treatment is dressing. It can protect wound against the outer environment while preserves a moist wound environment to the wound. Agarose is generally extracted from a natural product that is safe and compatible. Consequently, agarose has been used as a material in drug delivery application including the material in this study. For active ingredient in this dressing, sericin was chosen because sericin is proteins from silk cocoon that can activate fibroblast to promote collagen type I synthesis leading to wound healing promotion.  However, a technology for wound dressing production that is friendly to the environment and costeffectiveness is still limited. The freeze-thawing method is a clean and comfortable method that can process without a special machine. Moreover, it also enhances the physical properties of the wound dressing. Combined the freezethawing process with general wound dressing production may have a good effect on dressing’s mechanical and physical properties. Therefore, the purposes of this study were to fabricate and investigate the properties of agarose dressing containing sericin prepared using the freeze-thawing process combined with freeze-drying method comparing to the pure freeze-drying method.
Methodology: The physical and mechanical properties of the dressing were investigated using Scanning electron microscopy, Fourier-transform infrared spectroscopy and the gel fraction, swelling, releasing, and compressive properties were assessed.
Findings: The mechanical properties of the agarose containing sericin dressing prepared using the freezethawing process combined with the freeze-drying method were superior to those of using the pure freeze-drying method. Moreover, the physical properties of the dressing prepared using the freezethawing process combined with freeze-drying method tended to have better qualities than dressing prepared by pure freeze-drying method. The percentage of swelling of all samples were >90%. Conclusion: The agarose dressing containing sericin prepared using the freezethawing process combined with freeze-drying method seem to be better than pure freeze-drying method. 

  • Use of Nanoparticles in DDS and Newer Methodologies | Analytical strategies for pharmaceutical products
Location: Orlando, USA
Speaker

Chair

Karyn I Cotta

South University, USA

Speaker

Co-Chair

Pratima Tatke

Shreemati Nathibai Damodar Thackersey Women�s University, India

Session Introduction

Miyanou Rosales-Hurtado

University of Nimes, France

Title: Synthesis of new analogs of diaminopimelic acid and lysine

Time : 10:00-10:20

Speaker
Biography:

Miyanou Rosales-Hurtado holds a master’s degree in Molecular and Macromolecular Chemistry at the University of Bordeaux, in Talence, France. In 2016, she had done an internship on G-quadruplexes at European Institute of Chemistry and Biology. She is the second author on the article “Design, Synthesis, and Evaluation of 2,9Bis[(substituted-aminomethyl)phenyl]-1,10phenanthroline: Derivatives as G-Quadruplex Ligands.” She is now a Ph.D. student at the University of Nimes (France) under the supervision of Prof. Patrick Meffre and Dr. Zohra Benfodda. Her doctoral research investigates the design, synthesis, and evaluation of new potential agents to combat antibacterial resistance. 

Abstract:

Infections caused by multidrugresistant bacteria represent one of the biggest challenges in the medical field. There is an urgent need to develop new antibacterial targets and antibacterial agents to combat multidrug-resistance bacteria. For several years, the main target has been focused on the peptidoglycan biosynthesis pathway which provides a potential route to design novel antibiotic compounds. In fact, most bacteria require either lysine or its biosynthetic precursor, diaminopimelate acid (DAP), as a component of the peptidoglycan layer of the cell wall. Nevertheless, DAP/lysine are not present in mammals, thus, inhibitors of this pathway could provide potential antibacterial agents displaying low mammalian toxicity. In order to fight antibacterial resistance, our work focused on the design and synthesis of new analogs of diaminopimelic acid (DAP) and lysine.

Speaker
Biography:

Mykhailo Savin has studied Food Technology at the University of Bonn and got his M.Sc. degree in 2016. From 2016 on, he has been working as a Ph.D. student at the Institute of Animal Sciences at the University of Bonn. He is involved in the BMBF (German Federal Ministry of Education and Research)financed project “HyReKa” (02WRS1377C), where he investigates the occurrence and dissemination of clinically relevant antibioticresistant pathogens from poultry and pig slaughterhouses via wastewater and sewage water treatment plants into surface waters. Based on these results, recommendations for the prevention of dissemination should be formulated. 

Abstract:

Background and Objectives: Although colistin is a last resort antibiotic, it is applied regularly in animal production. Its increased use may have triggered the emergence of colistin-resistant bacteria. Hence, the aim was to investigate their occurrence in wastewater from poultry and pig slaughterhouses and to examine their emergence after the treatment process in the in-house and municipal wastewater treatment plants (WWTPs). Materials and Methods: Wastewater samples were taken during 2017-2018 along the production chains in two German pig slaughterhouses (n=53) and in its municipal WWTPs (n=36) as well as in two poultry slaughterhouses (n=72). Samples were screened for colistin-resistant bacteria using EMB medium supplemented with 3.5µg/ml colistin sulfate. The final identification was done by MALDI-TOF-MS. Antimicrobial susceptibility tests were performed by the broth microdilution method. Colistinresistant isolates were screened for the presence of colistin resistance genes (mcr 1-5) by PCR. Results: Colistin-resistant bacteria were more abundant in wastewater from the poultry slaughterhouses. Overall, 41.7% of its samples (n=30/72), including the outflows of the in-house WWTP, were found positive. The percentage of positive samples from the pig slaughterhouses and its mWWTPs was lower at 18.0% (n=16/89). Out of 46 samples, a total of 106 colistin-resistant strains were obtained. Among these, the majority belonged to E. coli (39.6%), followed by E. cloacae complex (28.3%), K. pneumoniae (27.4%) and R. ornithinolytica (4.7%). The mcr-1 gene was detected in 69.0% of the E. coli strains (n=29/42), in 13.8% of the K. pneumoniae strains (n=4/29) and in 3.3% of the strains from the E. cloacae complex (n=1/30). Conclusions: Colistin-resistant bacteria were detected in wastewater throughout the production chains as well as in the effluents and preflooder of the in-house and municipal WWTPs. This could pose a threat to human health and needs to be further investigated.