Lactoferrin (Lf), an iron-binding protein from the transferrin family has been reported to have numerous functions. Even though Lf was first isolated from milk, it is also found in most exocrine secretions and in the secondary granules of neutrophils. Antimicrobial and anti-inflammatory activity reports on lactoferrin identified its significance in host defense against infection and extreme inflammation. Anticarcinogenic reports on lactoferrin make this protein even more valuable. This review is focused on the structural configuration of iron-containing and iron-free forms of lactoferrin obtained from different sources such as goat, camel and bovine. Apart for emphasizing on the specific beneficial properties of lactoferrin from each of these sources, the general antimicrobial, immunomodulatory and anticancer activities of lactoferrin are discussed here. Implementation of nanomedicinial strategies that enhance the bioactive function of lactoferrin are also discussed, along with information on lactoferrin in clinical trials.

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The effect of catalyst liophilicity is shown in cyclic carbonate formation by transesterification. 1,3-Dichlorodistannoxanes as liophilic transesterification catalysts facilitated cyclic carbonate formation from corresponding 1,2-diols and diethyl carbonate in continuous fashion without isolation of catalyst. Thus 0.5 mol% of catalyst could produce 1,2-glycerol carbonate quantitatively in 2 h with multiple recyclability. The product formed during the reaction was almost quantitative and did not require further purification. Isolation of catalyst at any stage showed retention of its activity and identity.

Introduction The COVID-19 pandemic has led to a large body of literature regarding the impact of COVID-19 on orthopaedic care and practice. This rapid review aims to synthesize this published literature to give the orthopaedic fraternity an overview about the best practices that need to be followed during this period. Methodology A rapid review was conducted following the preferred reporting items for systematic reviews and meta-analyses (PRISMA) statement for rapid reviews on the impact of COVID-19 on orthopaedic care and practice. A Pubmed search was done to identify all literature related to the impact of COVID-19 on orthopaedic care and practice, published between December 2019 and October 2020 using a predefined search strategy. The final review included 375 peer-reviewed articles addressing the objectives. Results The majority of articles were expert opinions (37.1%) and narrative reviews (13.1%). There were 17.3% retrospective studies and 2.1% prospective studies with only one randomized control trial and ten systematic reviews. 83.8% of articles had levels of evidence IV and V, 79.5% of the articles were published in core-orthopaedic journals. Maximum publications were from the United States of America (31.7%), followed by India (11.5%). European countries together contributed to 32.0% of all publications. Conclusion COVID-19 has had a significant impact on all aspects of orthopaedic care and practice. The pandemic has affected outpatient clinics, emergency and elective surgery, rehabilitation, resident training, personnel management, use of personal protective equipment, telemedicine and all sub-specialities of orthopaedics. Orthopaedic practice will require the incorporation of new technologies, restructuring of health systems and reorganizing of training programs for optimal patient care. There would also be a need for frequent review of emerging literature to provide evidence-based guidelines to the orthopaedic fraternity which will not only help in mitigation of transmission of disease but also ensure continuity of optimum patient care.

Poor-solvating property of supercritical carbon dioxide (scCO 2 ) has been a great challenge, which limits the use of CO 2 as a common ''green'' solvent. The present report describes that by increasing molar volume (v) and lowering the melting temperature, which lowers cohesive energy density or solubility parameter (d), it is possible to increase the solubility of metal-based catalysts in scCO 2 without using costly fluorinated or tailormade CO 2 -philic modifications. We have studied various chlorodistannoxanes (1) and CuÁb-diketonates (2) to support our views. The study of bio-diesel production and transesterification of hindered esters using 1 in scCO 2 shows a 2Á8-folds rate enhancement coupled with an easier catalyst and product separation than that in organic solvents. The methodology, which works at least within the range of Van der Waals sphere of interactions, can be useful to solubilizing the molecules in scCO 2 and carries great opportunity in catalysis as well as in separation science.

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A new series of pyrazolo [1,2-b]phthalazine derivatives (4a-p) bearing the 5-aryloxypyrazole nucleus was synthesized by one-pot, three-component, base-catalyzed cyclo condensation reaction of 3-methyl-5-aryloxy-1-aryl-1H-pyrazole-4-carbaldehyde (1a-d), malononitrile or ethyl cyanoacetate (2a-b) and 2,3-dihydro-1,4-phthalazinedione (3a-b) in ethanol containing an eco friendly base, NaOH, in good to excellent yields. All synthesized compounds (4a-p) were duly characterized by physicochemical parameters, 1 H NMR, 13 C NMR, FT-IR and LCMS techniques. In vitro antimicrobial activity of the synthesized compounds was investigated against a representative panel of pathogenic strains. Compounds 4e, 4g, 4h, 4k and 4o exhibited excellent antimicrobial activity compared with first line drugs. In vitro antituberculosis activity was evaluated against Mycobacterium tuberculosis H37Rv, and compounds 4g and 4o emerged as the promising antimicrobial members with better antituberculosis activity. A brine shrimp bioassay was carried out to study the in vitro cytotoxic properties of the synthesized compounds. In vitro antioxidant activity was evaluated by the ferricreducing antioxidant power method. Compounds 4c, 4d, 4g and 4h showed the highest antioxidant potencies.

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