The suffering from organ dysfunction due to damaged or diseased tissue/bone has been globally on the rise. Current treatment strategies for non-union bone defects include: the use of autografts, allografts, synthetic grafts and free vascularized fibular grafts. Bone tissue engineering has emerged as an alternative for fracture repair to satisfy the current unmet need of bone grafts and to alleviate the problems associated with autografts and allografts. The technology offers the possibility to induce new functional bone regeneration using synergistic combination of functional biomaterials (scaffolds), cells, and growth factors. Bone scaffolds are typically made of porous biodegradable materials that provide the mechanical support during repair and regeneration of damaged or diseased bone. Significant progress has been made towards scaffold materials for structural support, desired osteogenesis and angiogenesis abilities. Thanks for innovative scaffolds fabrication technologies, bioresorbable scaffolds with controlled porosity and tailored properties are possible today. Despite the presence of different bone scaffold fabrication methods, pore size, shape and interconnectivity have not yet been fully controlled in most of the methods. Moreover, scaffolds with tailored porosity for specific defects are still difficult to manufacture. Nevertheless, such scaffolds can be designed and fabricated using three dimensional (3D) printing approaches. 3D printing technology, as an advanced tissue scaffold fabrication method, offers the opportunity to produce complex geometries with distinct advantages. The technology has been used for the production of various types of bodily constructs such as blood vessels, vascular networks, bones, cartilages, exoskeletons, eyeglasses, cell cultures, tissues, organs and novel drug delivery devices. This review focuses on 3D printed scaffolds and their application in bone repair and regeneration. In addition, different classes of biomaterials commonly employed for the fabrication of 3D nano scaffolds for bone tissue engineering application so far are briefly discussed.

Antimicrobial drug resistance, including resistance to multiple antibiotics, is continuously increasing. According to research findings, many bacteria resistant to other antibiotics were susceptible to ceftriaxone. However, over the last few years, ceftriaxone resistance has become growing and extremely worrisome challenge to the global healthcare system and several strategies have been initiated to contain the spread of antimicrobial drug resistance. Its extended use for therapeutic or preventative measures in humans and farm animals resulted in the development and spread of resistance. Recent advances in nanotechnology also offer novel formulations based on distinct types of nanostructure particles with different sizes and shapes, and flexible antimicrobial properties. For ceftriaxone, several nanostructured formulations through conjugation, intercalation, encapsulation with lipid carrier, and polymeric films have been investigated by different groups with promising results in combating the development of resistance. This review addressed the existing knowledge and practice on the contribution of nano‐based delivery approaches in overcoming ceftriaxone resistance. Evidences have been generated from published research articles using major search electronic databases such as PubMed, Medline, Google Scholar, and Science Direct.

The percentages of organisms exhibiting antimicrobial resistance, especially resistance to multiple antibiotics, are incessantly increasing. Studies investigated that many bacteria are being resistant to ciprofloxacin. This review addresses the current knowledge on nano-based ciprofloxacin delivery approaches to improve its effectiveness and overcome the resistance issues. Ciprofloxacin delivery can be modified by encapsulating with or incorporating in different polymeric nanoparticles such as chitosan, PLGA, albumin, arginine, and other organic and inorganic nanostructure systems. Most of these nano-approaches are promising as an alternative strategy to improve the therapeutic effectiveness of ciprofloxacin in the future.

Among the plethora of polymers being exploited and employed currently for biomedical applications, polypyrrole as a conducting polymer holds a key position since it offers several advantages including good specific conductivity, chemical stability, polymerizability and compatibility with mammalian cells; however, it also suffers from a few limitations that restrict it from being an obvious winner as a coating material. In order to overcome these limitations, pyrrole derivatives have been tried as potential alternatives. These synthesized derivatives facilitate the immobilization/coupling of biomolecules and drugs on to the surface so as to improve the biocompatibility and performance of implantable medical devices. In this work, N-succinimidyl ester pyrrole (PyNSE) has been synthesized and characterized. A synthesized monomer was copolymerized with pyrrole (Py) in different ratios to obtain smooth and adherent copolymer coatings on the metal surface. Results suggest that among the different coatings obtained, pure active ester functionalized polypyrrole (PPyNSE) coating is smoother and more adherent than its different copolymers with pyrrole. The activity of the coating was tested by attaching BSA and a model drug (p-nitroaniline) on the surface which indicated that the concentration of these molecules on the surface can be varied by varying the concentration of monomers, i.e. Py and PyNSE, during electropolymerization. These active coatings may serve as a potential platform for attaching drugs and biomolecules for various biomedical applications.

Background: Skin diseases are among the major contributors of disease burden in Ethiopia affecting individuals of all age. Extemporaneous compounding of topical medications serves as a necessary option to treat skin diseases when manufactured medications could not meet specific patient needs. Different classes of drugs are commonly used for the treatment of dermatologic diseases. Failure to periodically assess the prescribing pattern and patient needs may lead to inappropriate planning and implementation that ultimately compromise the service. Periodic prescription analysis for compounded medications helps to monitor the prescription pattern with respect to medication selection, disease condition, dosage form types and other relevant parameters. The current study was conducted to analyze the pattern of compounding prescriptions for dermatologicals in ALERT hospital. Methods: A cross-sectional design was conducted by retrospectively evaluating compounding prescription records of January and July, 2021. A total of 460 prescriptions in the hospital community pharmacy were systematically selected. Data related to disease pattern, product selection and dosage form type were extracted and analyzed. Data analysis was done using software for the statistical package for social science version 25.0. Results: A total of 441 prescriptions containing dermatological products for compounding were analyzed. Most patients were female (62.8%) and aged 30-64 years (44.0%). Psoriasis (36.2%), acne vulgaris (15.3%), and rosacea (13.4%) were the top 3 skin diseases for which the compounding preparations were prescribed. Salicylic acid (38.0%) was the most frequently prescribed drug followed by betamethasone (20.2%); while white petrolatum (47.2%) was the most common diluting agent used for compounding. Conclusion: Psoriasis was the major dermatologic disease for compounding prescriptions and salicylic acid was the most frequent product used in compounding for treatment of the prescribed skin diseases.

With the changing in consumers’ lifestyles and industrialization, pre-packaged food products have become standard. Information on food labels on pre-packaged food products is considered a means to help consumers make informed food choices. In Ethiopia, there has been a limited information on food labels' compliance with food labeling requirements and customers' use of labeling information for purchasing decision making. This study was designed to fill this information gap. A cross-sectional study was conducted in Addis Ababa in 2019. Thirty-one juice products and 403 consumers from 15 supermarkets were included in the study. Compliance was assessed using the 17 standard requirements for food labeling information. On the other hand, the use of food labeling information by consumers was measured by considering the ten essential food labeling information, and frequent use of labeling information was considered as a "good practice". Data were collected using semi-structured questionnaires and a checklist. Data were entered into Epi data entry and analyzed using SPSS. Descriptive statistics and binary logistic regression were performed. From the consumers included in the study, 204 (50.6%) were males, 248 (61.5%) attended college, and 105 (26.1%) reported frequently using food labeling information. Sex, marital status, monthly income, and level of awareness were associated (p < 0.05) with the use of food labeling information. Only 6 (19.4%) pre-packed juice products fulfilled all standard labeling requirements, while 1 (3.2%) fulfilled only 50% of the requirements.  In consideration of the increasing use of pre-packed food products and associated public health risks, the study demonstrated the need for improving public awareness about the use of food labeling information, and strengthening regulatory enforcement practices.

The aim of present work was to undertake comparative in vitro quality evaluation of six marketed clotrimazole cream formulations in Ethiopia with respect to physico-chemical properties like viscosity, spreadability, extrudability, pH and drug content. In vitro clotrimazole release from cream formulations was also studied using synthetic cellulose acetate membrane at 37 ºC in a solvent containing methanol and PBS 7.4 in the ratio of 75:25 as receiver medium. The cumulative amounts of the drug released over 12 h (µg mm-2) were analyzed. All clotrimazole cream formulations showed good and smooth homogeneous appearance with white color. The pH of clotrimazole cream formulations ranged from 4-7, which is a physiologically acceptable pH range and in principle devoid of any skin irritation. Clotrimazole content ranged from 90-110%, ensuring the uniformity of the drug content in all formulations. The increase in diameter of clotrimazole cream formulations following the spreadability test was found to range from 4-6 cm. Cream formulation D (Clotri-Denk) exhibited highest viscosity values than other formulations, whereas formulation E (Chinese Clotrimazole BP) showed lowest viscosity value. Cream formulation F (Mycoril) showed better extrudability and spreadability as compared to other formulations. Drug release from all formulations was slow in the first 6 hrs. After the 6 th hr, steady drug release continued for formulation D and E. Fast drug release was observed in formulations A (Candid) and B (Candigen), whereas for the formulations C (Canesten), D and E, steady drug release pattern was observed after the 6 th hr. It can be concluded that all clotrimazole cream formulations fulfilled the quality criteria of in-house and pharmacopeias specifications.

Background: Coronavirus disease 2019 (COVID-19) continues to spread worldwide. Hand hygiene, via either regular handwashing with soap and water or using hand sanitizers, is among the various measures that need to be followed to control the outbreak of the disease. Alcohol-based hand sanitizers are the “gold standard” for hand disinfection because of their broad antimicrobial spectrum of activity, easy availability, better safety profile, and general acceptability to users. This study aimed at evaluating the physicochemical quality and antimicrobial efficacy of the locally manufactured Ethanol-Based Hand Sanitizers (EBHS) marketed in Addis Ababa, Ethiopia.Methods: A cross-sectional survey was used to collect EBHS from Addis Ababa marketplaces. A total of 25 sample products were randomly selected from the different categories. The physicochemical evaluation of the products was carried out as per the United States Pharmacopoeia and WHO standards. Escherichia coli, Klebsiella spp., Pseudomonas aeruginosa, Staphylococcus aureus, Salmonella spp., and Shigella spp clinical isolates were used for the antimicrobial efficacy test. Results: The Fourier Transform Infrared result confirmed that all the test products met the identification test for ethanol. The majority (68%) of EBHS complied with the test for ethanol content (75 – 85% v/v). However, only 3 products fulfilled the hydrogen peroxide content (0.112 - 0.137% v/v). LPC307 showed the maximum zone of inhibition of 12 mm against Escherichia coli whereas MPC204 exhibited only 3 mm. LPC101 was found to be more sensitive to Shigella and Klebsiella Spp with minimum inhibitory concentration values of 20% and 10%, respectively. The sample product LPC101 showed a minimum bactericidal concentration of 20% against Escherichia coli, Pseudomonas aeruginosa, and Klebsiella spp.Conclusion: One-third of the tested EBHS did not comply with the WHO ethanol content limit and the majority of the products failed to meet the label claim for hydrogen peroxide content. Besides, nearly all products proved that they have activity against all the tested pathogenic microorganisms; though, they did not show 99.9% bacteriostatic or bactericidal activities as claimed. The study findings suggested regular monitoring of the quality of marketed EBHS considering the current wide use of these products