Efficient synthesis of indole-chalcones based glycohybrids and their anticancer activity.

Indole based glycosides belong to the class of pharmacologically active molecules and found in diverse natural compounds. Herein, we report the synthesis of 1,2,3-triazole bridged chirally enriched diverse indole-chalcones based glycohybrids. Three series of glycohybrids were designed and efficiently synthesized using d-glucose, d-galactose and d-mannose derived 1-azido glycosides. The reactions sequence involved were, the synthesis of indole derived chalcones which were formed via Claisen-Schmidt condensation reaction and subsequently N-propargylation which leads to the production of N-propargylated indole-chalcones. The N-propargylated indole-chalcones get transformed into 1,2,3-triazole bridged indole-chalcone based glycohybrids by reacting with 1-azido sugar glycosides under click-chemistry reaction conditions. Further, the biological activity of synthesized glycohybrids (n = 27) was assessed in-vitro against MDA-MB231, MCF-7, MDA-MB453 cancer, and MCF-10A normal cell lines. The selected compounds showed potent anti-oncogenic properties against MCF-7 and MDA-MB231 breast cancer cell line with IC50 values of 1.05 µM and 11.40 µM respectively, with very good selectivity index (SI > 161). The active compounds show better binding affinity as compared to co-crystallized inhibitor 1-(tert-butyl)-3-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (PP1) with HCK (PTKs) proteins in molecular docking studies.

Efficacy and safety of degludec U100 versus glargine U300 for the early postoperative management of patients with type 2 diabetes mellitus undergoing coronary artery bypass graft surgery: A non-inferiority randomized trial.

AIMS: To compare the efficacy and safety of degludec U100 versus glargine U300 for the early postoperative management of patients with type 2 diabetes mellitus (T2D) undergoing coronary artery bypass graft (CABG) surgery. METHODS: A total of 239 patients were randomly assigned (1:1) to receive a basal-bolus regimen in the early postoperative period using degludec U100 (n = 122) or glargine U300 (n = 117) as basal and glulisine before meals. The primary outcome was mean differences between groups in their daily BG concentrations. The major safety outcome was the occurrence of hypoglycemia. RESULTS: There were no differences in mean daily BG concentrations (157 vs. 162 mg/dl), mean percentage of readings within target BG of 70-180 mg/dl (74% vs. 73%), daily basal insulin dose (19 vs. 21 units/day), length of stay (median [IQR]: 9 vs. 9 days), or hospital complications (21.3% vs. 21.4%) between treatment groups. There were no differences in the proportion of patients with BG <70 mg/dl (15.6% vs. 23.1%) or <54 mg/dl (1.6% vs. 4.3%) between degludec-100 and glargine-300 groups. CONCLUSIONS: Treatment with degludec U100 is as effective and safe as glargine U300 for the early postoperative hospital management of patients with T2D undergoing CABG.

Extraction, isolation, synthesis, and biological evaluation of novel piperic acid derivatives for the treatment of Alzheimer's disease.

In this paper, we developed a series of piperic acid (PA) analogs with the aim of overcoming the limitations associated with the natural products for the management of Alzheimer's disease (AD). A comprehensive SAR study was performed to enhance cholinesterase inhibition of PA. The acetylcholinesterase inhibition and its kinetic data suggested 6j as the lead molecule (AChE IC50 = 2.13 ± 0.015 µM, BChE = 28.19 ± 0.20%), in comparison to PA (AChE = 7.14 ± 0.98%) which was further selected for various biological studies in AD models. 6j, exhibited interaction with the peripheral anionic site of AChE, BBB permeability (Pe = 7.98), and antioxidant property (% radical scavenging activity = 35.41 ± 1.09, 2.43 ± 1.65, for 6j and PA at 20 M[Formula: see text], respectively). The result from the metal chelation study suggests that 6j did not effectively chelate iron. The molecular modeling studies suggested that 6j could effectively interact with Ser293, Phe295, Arg296, and Tyr34 of AChE. In the cell-based cytotoxicity studies, 6j exhibited cytocompatibility at the different tested concentrations. The acute toxicity data on mice suggested that compound 6j had no renal and hepatotoxicity at 500 mg/kg. Moreover, 6j could effectively reverse scopolamine-induced amnesia by improving spatial and cognitive memory in mice. The above results strongly suggest that compound 6j may act as a novel multi-targeted lead for AD therapy.

Complete-arch implant-supported fixed dental prostheses fabricated with PEEK and PEKK framework: a systematic review.

PURPOSE: To evaluate the performance of complete-arch implant-supported fixed dental prostheses (FDPs) fabricated with polyetheretherketone (PEEK) and polyetherketoneketone (PEKK) framework in clinical cases. MATERIALS AND METHODS: This systematic review followed the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses and was registered in the International Prospective Register of Systematic Reviews with the number CRD42023399494. The electronic database PubMed, Cochrane Library and EBSCOhost were assessed for clinical research and reports on complete-arch implant-supported FDPs fabricated with PEEK and PEKK framework. Human studies with a minimum follow-up of 1 year and published in an English language were the only ones included. RESULTS: The initial database and hand search provided 564 articles. Finally, 12 articles published between 2018 and 2022 were included in this systematic review. The mean follow-up ranged from 1 year to 6 years. The included studies reported 119 (114 PEEK, 5 PEKK) complete-arch implant-supported FDPs during 1 year follow-up. The cumulative survival rate of prostheses with PEEK as a framework was 97.3%. Prostheses fractures and complications were found with both PEEK and PEKK frameworks. No implant failure reported with both PEEK and PEKK prostheses. CONCLUSION: In short-term follow-up, the complete-arch implant-supported FDPs with PEEK as a framework showed a good survival rate and acceptable health of the supporting tissues. The PEEK framework had shown adhesion issues as the most common prosthetic complication. Limited data were available on PEKK as framework material, so further long-term clinical trials are required.

Low skeletal muscle mass is associated with liver fibrosis in individuals with type 2 diabetes and nonalcoholic fatty liver disease.

BACKGROUND AND AIM: Type 2 diabetes (T2D) and low skeletal muscle mass (SMM) are associated with increased risk of nonalcoholic fatty liver disease (NAFLD). However, data regarding the association between low SMM and NAFLD-related liver fibrosis in individuals with T2D are scarce. Therefore, we aimed to investigate the association between low SMM and liver fibrosis in individuals with T2D and NAFLD. METHODS: Controlled attenuation parameter (CAP) of ≥ 248 dB/m was taken as cutoff suggesting NAFLD. Clinically relevant liver fibrosis and advanced liver fibrosis were defined as liver stiffness measurement (LSM) by transient elastography (TE) of ≥ 8.0 and ≥ 9.6 kPa, respectively. SMM was measured using dual energy X-ray absorptiometry (DEXA). Low SMM was defined as appendicular SMM index of < 7.0 kg/m2 for men and < 5.4 kg/m2 for women. RESULTS: Of the 487 consecutive patients with T2D, 366 (75.1%) had NAFLD. Among individuals with NAFLD, 118 (32.2%) and 64 (17.5%) had clinically relevant liver fibrosis and advanced liver fibrosis, respectively. Low SMM was diagnosed in 78 (21.3%) individuals with NAFLD. Patients with low SMM were older (56.1 vs 52.8 years) and had longer duration of diabetes (10.3 vs 8.1 years). Low SMM was an independent risk factor associated with clinically relevant liver fibrosis (P = 0.002) and advanced liver fibrosis (P ≤ 0.0001). Associations between low SMM and clinically relevant- and advanced liver fibrosis were maintained even after sequential adjustment for confounding variables through the multivariate regression analysis. CONCLUSIONS: Low SMM is independently associated with liver fibrosis in individuals with T2D and NAFLD.

Glucose Lowering Efficacy and Pleiotropic Effects of Sodium-Glucose Cotransporter 2 Inhibitors.

In type 2 diabetes, the maladaptive upregulation of sodium-glucose cotransporter 2 (SGLT2) protein expression and activity contribute to the maintenance of hyperglycemia. By inhibiting these proteins, SGLT2 inhibitors increase urinary glucose excretion (UGE) that leads to fall in plasma glucose concentrations and improvement in all glycemic parameters. Clinical studies have demonstrated that in patients with type 2 diabetes, SGLT2 inhibitors resulted in sustained reductions in glycated hemoglobin (HbA1C), body weight, blood pressure and serum uric acid levels. Interestingly, the cardiovascular (CV) and renal outcome trials revealed the beneficial effects of SGLT2 inhibitors on CV and renal functions. Because the benefits were seen soon after initiation of SGLT2 inhibitors, these observations are explained by effects beyond their glucose lowering capacity. SGLT2 inhibitors also reduce liver fat in patients with nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes. This chapter describes the basic information about SGLT2 inhibitors, current status of SGLT2 inhibitors in the management of type 2 diabetes and their beneficial effects in addition to glycemic control.

Seasonal abundance and infection of Japanese encephalitis vectors from Gorakhpur district, Uttar Pradesh, India.

BACKGROUND & OBJECTIVES: Japanese encephalitis (JE) is a major public health problem in many states of India. Uttar Pradesh state contributes 75% of the total cases reported. A longitudinal study was undertaken to find out the seasonal abundance, infection in the JE vectors in Gorakhpur region of Uttar Pradesh, and intervention strategies like indoor residual spraying and long-lasting insecticidal nets were adopted. METHODS: The vector abundance was monitored from July 2013 to August 2016 at fortnightly intervals and identified using standard mosquito identification keys and screened for viral infection. Intervention measures like indoor residual spraying with lambda-cyhalothrin 10% WP at 25 mg/m2 in 58 gramasabha in Bhathat Block and long-lasting insecticidal nets were distributed @ 2 LLIN for each household with 5-6 members in 5 villages of Korabar block. RESULTS: A total of 5,36,609 mosquitoes constituting 34 species and 10 genera were collected during this study period. Among the JE vector, peak abundance of Culex tritaeniorhynchus was recorded just before the JE season from July to October in all the blocks. There was a marked reduction in the density of Cx. tritaeniorhynchus from July compared to baseline year 2014 in Bhathat Block where indoor residual spraying (IRS) was performed in June 2015. The vector density declined in 5 villages of Khorabar Block where long-lasting impregnated bed nets (LLINs) were distributed during July 2016. INTERPRETATION & CONCLUSION: The present study provided knowledge about the seasonal JE vector density and JE virus infection in mosquitoes during the monsoon season in Gorakhpur region of Uttar Pradesh. IRS and the personal protection measure like LLINs were distributed to interrupt the JE transmission in this area which gave encouraging results.

Rehabilitation of Severe Atrophic Ridges with Zygomatic Implant and/or All-on-4 Treatment Concepts-A Case Series.

Rehabilitation of completely edentulous patients with implant-supported prosthesis (ISP) is the need of the day, but in many patients, the routine ISP is not possible due to the severe atrophic residual ridges. The present case series describes three cases with atrophic ridges rehabilitated using zygomatic implants and/or All-on-4 treatment concepts. In case 1 and case 3, in maxillary arch, there was not enough bone in Zone 3 to rehabilitate the patient with routine protocol followed for the All-on-4 treatment concept, so in these two cases, zygomatic implants were placed. Case 1 and case 2 were rehabilitated with Malo Bridge and case 3 with acrylic teeth-hybrid prosthesis using a computerized milling procedure to obtain improved fit, function, esthetics, and ease of retrievability whenever required.

Effect of dulaglutide on liver fat in patients with type 2 diabetes and NAFLD: randomised controlled trial (D-LIFT trial).

AIMS/HYPOTHESIS: Liraglutide, a daily injectable glucagon-like peptide-1 receptor (GLP-1r) agonist, has been shown to reduce liver fat content (LFC) in humans. Data regarding the effect of dulaglutide, a once-weekly GLP-1r agonist, on human LFC are scarce. This study examined the effect of dulaglutide on LFC in individuals with type 2 diabetes and non-alcoholic fatty liver disease (NAFLD). METHODS: Effect of dulaglutide on liver fat (D-LIFT) was a 24 week, open-label, parallel-group, randomised controlled trial to determine the effect of dulaglutide on liver fat at a tertiary care centre in India. Adults (n = 64), who had type 2 diabetes and MRI-derived proton density fat fraction-assessed LFC of ≥6.0% at baseline, were randomly assigned to receive dulaglutide weekly for 24 weeks (add-on to usual care) or usual care, based on a predefined computer-generated number with a 1:1 allocation that was concealed using serially numbered, opaque, sealed envelopes. The primary endpoint was the difference of the change in LFC from 0 (baseline) to 24 weeks between groups. The secondary outcome measures included the difference of the change in pancreatic fat content (PFC), change in liver stiffness measurement (LSM in kPa) measured by vibration-controlled transient elastography, and change in liver enzymes. RESULTS: Eighty-eight patients were screened; 32 were randomly assigned to the dulaglutide group and 32 to the control group. Overall, 52 participants were included for per-protocol analysis: those who had MRI-PDFF data at baseline and week 24. Dulaglutide treatment resulted in a control-corrected absolute change in LFC of -3.5% (95% CI -6.6, -0.4; p = 0.025) and relative change of -26.4% (-44.2, -8.6; p = 0.004), corresponding to a 2.6-fold greater reduction. Dulaglutide-treated participants also showed a significant reduction in γ-glutamyl transpeptidase (GGT) levels (mean between-group difference -13.1 U/l [95% CI -24.4, -1.8]; p = 0.025) and non-significant reductions in aspartate aminotransferase (AST) (-9.3 U/l [-19.5, 1.0]; p = 0.075) and alanine aminotransferase (ALT) levels (-13.1 U/l [-24.4, 2.5]; p = 0.10). Absolute changes in PFC (-1.4% [-3.2, 0.3]; p = 0.106) and LSM (-1.31 kPa [-2.99, 0.37]; p = 0.123) were not significant when comparing the two groups. There were no serious drug-related adverse events. CONCLUSIONS/INTERPRETATION: When included in the standard treatment for type 2 diabetes, dulaglutide significantly reduces LFC and improves GGT levels in participants with NAFLD. There were non-significant reductions in PFC, liver stiffness, serum AST and serum ALT levels. Dulaglutide could be considered for the early treatment of NAFLD in patients with type 2 diabetes. TRIAL REGISTRATION: ClinicalTrials.gov NCT03590626 FUNDING: The current study was supported by an investigator-initiated study grant from Medanta-The Medicity's departmental research fund and a grant from the Endocrine and Diabetes Foundation (EDF), India. Graphical abstract.

Neuroprotective effect of Reinwardtia indica against scopolamine induced memory-impairment in rat by attenuating oxidative stress.

Reinwardtia indica belongs to Linaceae family and used as a folk medicine in Asian countries. Traditionally, it has been used in the treatment of paralysis and anti-microbial in wound healing, etc. The current study was undertaken in order to investigate the antioxidant and memory protective effect of the alcoholic (99.90%) (AERI) and hydro-alcoholic (70:30) leaves extract (HAERI) of Reinwardtia indica, against scopolamine-induced memory impairment in animals and also tried to determine the possible mechanism of action. In addition, phytochemical profiling of alcoholic leaves extract was also conducted through gas chromatography-mass spectrometry (GC-MS/MS). Rats were pretreated with AERI, HAERI (dose 250 and 500 mg/kg) and Donepezil (standard drug) along with scopolamine (1 mg/kg) for a period of 14 days followed by different test like elevated plus maze, passive avoidance, and Morris water maze to assess learning and memory ability. Acetylcholine levels, acetylcholinesterase (AChE), antioxidant enzymes (SOD, CAT & GSH), histopathology of the brain and biochemical test were also performed at the end of the treatment period. The scopolamine treatment resulted in learning and memory deficits which were partially and significantly ameliorated by the AERI at higher dose among other doses of extracts. The AERI at higher dose also counteracted the scopolamine-induced decrease in acetylcholine levels, increase in AChE activity, and decrease in antioxidant enzymes activities. No significant changes observed in the biochemical estimation of all dose of extracts. Histology of brain tissue showed the marked cellular changes in only scopolamine treated group while the standard, AERI and HAERI treated group were showing less damage at hippocampus region of the brain. The phytochemicals found after chemical profiling through GC-MS also supported the activity because of the presence of chemicals already reported for the neuroprotective, memory-enhancing and antioxidant activity, etc. The results demonstrated that the ability of the AERI at higher dose among all doses of extracts has more potential to revert the scopolamine-induced learning and memory deficits in rats by attenuating the decreased level of acetylcholine and antioxidant enzymes.

Inorganic clay nanocomposite system for improved cholinesterase inhibition and brain pharmacokinetics of donepezil.

Objective: Brain drug delivery for effective treatment of neurodegenerative disorders is limited due to the selective permeability of blood brain barrier (BBB). During the past few years, development of novel delivery system has attracted considerable attention of formulation scientists to overcome the permeability limitation caused by BBB.Significance: Based on the outcomes of this study and taking into consideration of the unique characteristics of laponite, it can be further explored to deliver many other central nervous system acting drugs.Methods: In the present study, laponite (LAP) nanocomposites were exploited for the improved brain delivery of donepezil (DZ) following encapsulation approach due to their nano-size and positive charge at pH <9.Result: The size of prepared nanocomposites was 53.7 ± 4.0 to 137.7 ± 11.0 nm. The drug was released in a sustained manner till 120 h in phosphate buffer saline (pH 7.4) and acid phthalate buffer (pH 4.0). LAPDZ formulations inhibited acetylcholinesterase approximately by 82%, significantly higher (p < 0.05) than plain DZ (30%). Swiss albino mice exhibited enhanced brain uptake of LAPDZ administered via intravenous route. Promising pharmacokinetic parameters were observed in animals treated with LAPDZ. LAPDZ formulation showed half-life (t1/2), volume of distribution (Vd) and clearance (Cl) as 5.53 ± 0.40 h-1, 0.129 ± 0.02 L, 0.015 ± 0.002 L/h, respectively. While DZ solution showed the same parameters as 1.06 ± 0.12 h-1, 0.168 ± 0.01 L, 0.106 ± 0.013 L/h, respectively. The brain uptake of LAPDZ formulation was improved with quintuplet t1/2.Conclusion: Based on the results of present study, it is proposed that the formulated nanocomposite would result in improved patient compliance with therapeutic effect at lower doses.

Crestal Bone Changes and Patient Satisfaction with Single Implant-Retained Mandibular Overdentures with Dalla Bona and Locator Attachments with Immediate Loading Protocols. A Randomized Controlled Clinical Study.

PURPOSE: There is no enough evidence present on the success of single implant-retained mandibular overdentures (SIMO) with Dalla Bona and Locator attachments. This study aims to compare crestal bone loss and patient satisfaction with SIMO with Dalla Bona and Locator attachment following immediate loading protocols. MATERIAL AND METHODS: Twelve patients included in Group 1 received immediate SIMO with Dalla Bona attachments, and another twelve patients in Group 2 received immediate SIMO with Locator attachments in the mid symphyseal region. The follow-up was scheduled at 6 and 12 months after implant placement. The patient satisfaction with the denture was evaluated with the visual analog scale (VAS) score. The data obtained were statistically analyzed with the independent student t-test for intergroup comparison and repeated measures of ANOVA followed by Bonferroni's Post hoc analysis for intragroup comparison of mean crestal bone loss at a different time interval. RESULTS: Ten patients each in both the groups were available for follow-up. Crestal bone loss at 6 months follow-up for Dalla Bona group was 0.42 ± 0.10 mm on the mesial side and 0.43 ± 0.14 mm on the distal side and at 1 year 1.54 ± 0.16 mm on the mesial side and 1.66 ± 0.13 mm on the distal side. The mean crestal bone loss at 6 months follow-up for Locator group was 0.48 ± 0.16 mm on the mesial side and 0.45 ± 0.11 mm on the distal side and at 1 year was 1.71 ± 0.22 mm on mesial side and 1.74 ± 0.28 mm on the distal side. There was difference in bone loss at 6 months (mesial: 0.06 mm, p = 0.327; distal:0.02 mm; p = 0.726) and at 1 year (mesial: 0.17 mm, p = 0.063; distal: 0.08 mm; p = 0.423) in between two groups but the difference was statistically insignificant. There was a significant difference found in the VAS score for patient satisfaction with SIMO with Dalla Bona attachments and Locator attachments at 6 months (54.2 vs. 51.8, p = 0.005) and 1 year (60.6 vs. 55.2, p = 0.005). CONCLUSIONS: Patient satisfaction with SIMO with Dalla Bona attachments was higher during the follow-up. SIMO with Dalla Bona attachments had less crestal bone loss and less prosthetic complications when compared to Locator attachments, although the difference in the bone loss was statistically insignificant.

Attitude of dental professionals toward cast partial denture: A questionnaire survey in India.

AIMS: The use of cast partial dentures (CPDs) has been decreased and its importance has been declined in the teaching curriculum. The purpose of this survey was to evaluate the attitudes of dental professionals toward conditions using CPDs in private practice in India. SETTINGS AND DESIGN: Descriptive survey. MATERIALS AND METHODS: This survey consists of eight close-ended questions concerning the use of CPD by dental professionals practicing in India. The URLs of the questionnaire were shared via E-mail to dentists practicing throughout India, to obtain a response of 384 which is a predetermined sample size. STATISTICAL ANALYSIS USED: Statistical analysis was done using counts and percentages and the results were further analyzed statistically by the Chi-square test. RESULTS: Nearly 42.79% of general dental practitioners (GDPs), 47.26% of prosthodontists, and 9.95% of other specialist dentists responded to the questionnaire. GDPs mostly preferred removable partial dentures (RPDs) (71.87%) and fixed partial dentures (57.22%), whereas prosthodontists preferred mostly implant (60.91%). GDPs mostly preferred flexible dentures (62.42%), whereas prosthodontists preferred CPDs 62.84%. Almost 52.50% of the GDPs mostly raised a cost issue and 63.11% of the prosthodontists had difficulty in adjustment with CPDs. Nearly 63.46% of the dentists told that implant-supported restorations are better options compared to CPDs; still, majority of the dentists (53.23%) were in favor that more importance for teaching CPDs in graduation curriculum should be given. CONCLUSIONS: This survey shows that in India a significant proportion of GDPs (71.87%) preferred RPDs, mostly flexible dentures (62.42%) due to their low cost compared to CPDs. Prosthodontists mostly preferred implants (60.91%) because they are more confident and better trained in these. It is recommended that more importance be given in teaching implants along with CPDs in graduation curriculum so that practitioners can better educate their patients about implants and their advantages over flexible dentures and their utilization in cases where patients are not willing for CPDs.

Evaluation of antioxidant and antimicrobial potential of a novel Himalayan plant Reinwardtia indica dumort: Scientifically unexplored.

Reinwardtia indica (Lineceae) is a medicinal plant cultivated in the Himalayan region. It is effectively used in folk medicines for the treatment of various health complications. In the present study, the shade dried leaves and stem were extracted in three different solvents such as ethyl acetate, ethanol, and hydro-alcoholic. The antioxidant efficacy of these extracts was confirmed by using different in vitro assays: DPPH free radical scavenging, superoxide radical scavenging, lipid peroxidation, metal ion chelating capability and reducing power determination. Total phenol content was maximum in hydro alcoholic extract of leaf (540.37 mg per g of gallic acid equivalents) and stem (330.51 mg per g of gallic acid equivalents) while flavonoid content was maximum in ethanolic extract of leaf (305 mg per gram of rutin equivalents) and ethyl acetate extract of stem (170.6 mg per gram of rutin equivalents). The antioxidant activity of these extracts was positively correlated with their total phenol and flavonoid content. Among all tested extracts, ethanolic extract of leaf exhibit maximum zone of inhibition against all tested clinical isolates of bacterial (E. coli 11.00 ±â€¯1.73 mm, P. aeurogenosa 11.67 ±â€¯0.58 mm and S. aureus 10.33 ±â€¯1.53 mm) and fungal (C. albicans 11.33 ±â€¯1.10 mm) pathogens, while ethyl acetate extracts of the leaf and stem showed minimum inhibitory concentration against all tested microorganisms. Thus, R. indica extracts can be used as potent natural antioxidant having antifungal and antibacterial action.

Antioxidant, antimicrobial and cytotoxic potential of silver nanoparticles synthesized using flavonoid rich alcoholic leaves extract of Reinwardtia indica.

The present work discusses the establishment of a green route for the rapid synthesis of silver nanoparticles (AgNPs) using an alcoholic extract of Reinwardtia indica (AERI) leaves which act as a reducing as well as a capping agent. The change in color from yellowish green to dark brown confirmed the synthesis of AgNPs. A characteristic surface plasmon resonance (SPR) band at 436 nm advocated the presence of AgNPs. The synthesis process was optimized using one factor at a time approach where 1.0 mM AgNO3 concentration, 5 mL 0.4% (v/v) of AER inoculum dose and 30 min of sunlight exposure were found to be the optimum conditions. The synthesized AgNPs was characterized by several characterizing techniques such as HR- TEM, SAED, HR-SEM, EDX, XRD, FTIR and AFM analysis. For evaluation and comparison of AgNPs with AERI used human pathogen E. coli, P. aeurogenosa, S. aeurus and C. albicans for antimicrobial, for cytotoxicity study SiHa cell line at concentration of (10, 50, 100, 250 and 500 µg mL-1) and for enzymatic assay superoxide dismutase, catalase, malondialdehyde and glutathione peroxidase method were used. The size of nanoparticle in the range of 3-15 nm was confirmed TEM, spherical shape by SEM and crystal lattice nature by XRD. AFM results revealed the 2 D and 3 D pattern of particle scatter nature on the surface. This protocol as simple, rapid, one step, eco-friendly, nontoxic and AgNPs showed strong antimicrobial activity as well as cytotoxic potential in comparison to AERI.

Comparative study to evaluate bone loss during osteotomy using standard drill, bone trephine, and alveolar expanders for implant placement.

STATEMENT OF PROBLEM: Various osteotomy modalities seem to have an impact on the primary and secondary stability of the dental implant. The available literature lacks the comparison of various available osteotomy modalities used for the dental implant placement and its effects on the initial surgical bone removal. PURPOSE: The purpose of this study is to compare and evaluate the osteotomy sites created using standard drill, bone trephine, and alveolar expanders for dental implant surgery. MATERIALS AND METHODS: The study was done on ten goat hemimandibles. Three osteotomy sites were prepared at the inferior border of the mandible using standard drill, trephine, and alveolar expander in each hemimandibles and the sites were subjected to cone-beam computed tomography (CBCT). The CBCT images obtained were compared for the amount of cortical bone and bone marrow loss at osteotomy sites in different techniques. RESULTS: The mean and standard deviation of loss of cortical bone with standard drills, trephines, and alveolar expanders was 3.62 ± 4.216 × 10-2, 3.6 ± 4.681 × 10-16 and 3.15 ± 7.071 × 10-2. At the middle-third region, the loss of marrow bone was 3.38 ± 7.88 × 10-2, 2.15 ± 8.498 × 10-2 and 0.03 ± 9.487 × 10-2, and at lower third region, it was 2.3 ± 4.714 × 10-2, 0.02 ± 6.325 × 10-2, and 0.0, respectively. CONCLUSION: CBCT images showed minimum bone loss with the use of alveolar expander which may be due to the lateral bone condensation rather the removal of the marrow. Trephine showed less marrow removal in comparison to the standard drill used for dental implant surgery.

Comparison of the flexural strength of polymethyl methacrylate resin reinforced with multiwalled carbon nanotubes and processed by conventional water bath technique and microwave polymerization.

PURPOSE: This in vitro study was done to compare the flexural strength of polymethyl methacrylate resin reinforced with multiwalled carbon nanotubes (MWCNTs) and processed by conventional water bath technique and using microwave energy. MATERIALS AND METHODS: A total of 180 acrylic resin specimens measuring 65 mm × 10 mm × 2.5 mm were fabricated, with conventional water bath groups and microwave group having ninety specimens each. Ninety specimens were divided into thirty specimens as control and subgroups containing 0.025% MWCNTs and 0.050% MWCNTs with thirty specimens each. The specimens were tested for flexural strength by three-point bending test on universal testing machine. The statistical analysis was done using Student's t-test and one-way analysis of variance, and the intercomparison between each group was done using Tukey's post hoc analysis. RESULTS: The mean flexural strength of specimens cured by water bath technique was 95.563 MPa and microwave technique was 118.416 MPa. Control Group B possesses highly significant increase in flexural strength than Control Group A with P < 0.01. Unpaired Student's t-test showed that Subgroup B1 and Subgroup B2 possess highly significant increase in flexural strength than Subgroup A1and Subgroup A2. CONCLUSION: Heat polymerized denture base resin with and without reinforcement of MWCNTs and polymerized by microwave technique possess higher flexural strength than heat polymerized fiber reinforced denture resin polymerized by water bath technique. MWCNTs could be used as an effective reinforcement material for denture base resin polymerized by either water bath technique or microwave energy.

The changing profile of hypercalcemia in a tertiary care setting in North India: an 18-month retrospective study.

This retrospective study was undertaken to determine the profile of hypercalcemia in all patients who presented to Medanta-The Medicity, a tertiary care hospital in North India. A total of 255,830 patients presented to the hospital during 1st January 2014 till 30th June 2015 (18 months). Among them calcium measurement was done in 26,297 (10.2%) patients. A total of 552 patients was found to have hypercalcemia. Among them, 15 (2.7%) patients had transient hypercalcemia and 537 (97.3%) had sustained hypercalcemia. The incidence of hypercalcemia was 2.09%, being transient in 0.05% and sustained in 2.04%. The most common causes in the sustained group were malignancy (23.1%) followed by primary hyperparathyroidism (PHPT, 21.9%). Most cases of PHPT were asymptomatic. Interestingly, we found emergence of two unusual groups of hypercalcemia, namely hypercalcemia of advanced chronic liver disease (n = 34) and vitamin D toxicosis (n = 21) in the non-parathyroid group of hypercalcemia. This changing pattern of hypercalcemia should be kept in mind while evaluating a patient of hypercalcemia in a hospital setting.

Osseoperception in Dental Implants: A Systematic Review.

PURPOSE: Replacement of lost teeth has significant functional and psychosocial effects. The capability of osseointegrated dental implants to transmit a certain amount of sensibility is still unclear. The phenomenon of developing a certain amount of tactile sensibility through osseointegrated dental implants is called osseoperception. The aim of this article is to evaluate the available literature to find osseoperception associated with dental implants. MATERIALS AND METHODS: To identify suitable literature, an electronic search was performed using Medline and PubMed database. Articles published in English and articles whose abstract is available in English were included. The articles included in the review were based on osseoperception, tactile sensation, and neurophysiological mechanoreceptors in relation to dental implants. Articles on peri-implantitis and infection-related sensitivity were not included. Review articles without the original data were excluded, although references to potentially pertinent articles were noted for further follow-up. The phenomenon of osseoperception remains a matter of debate, so the search strategy mainly focused on articles on osseoperception and tactile sensibility of dental implants. This review presents the histological, neurophysiological, and psychophysical evidence of osseoperception and also the role of mechanoreceptors in osseoperception. RESULTS: The literature on osseoperception in dental implants is very scarce. The initial literature search resulted in 90 articles, of which 81 articles that fulfilled the inclusion criteria were included in this systematic review. CONCLUSION: Patients restored with implant-supported prostheses reported improved tactile and motor function when compared with patients wearing complete dentures.

Hypercalcemia of advanced chronic liver disease: a forgotten clinical entity!

Hypercalcemia caused by advanced chronic liver disease (CLD) without hepatic neoplasia is uncommonly reported and poorly understood condition. We are reporting two cases of advanced CLD who developed hypercalcemia in the course of the disease. This diagnosis of exclusion was made only after meticulous ruling out of all causes of hypercalcemia. The unique feature of this type of hypercalcemia is its transient nature that may or may not require treatment. This clinical condition in patients with CLD should be kept in mind while evaluating the cause of hypercalcemia in them.