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1.
Neurol India ; 70(6): 2416-2421, 2022.
Article in English | MEDLINE | ID: mdl-36537426

ABSTRACT

Context: Updates on clinical, investigatory, and therapeutic aspects of neuromyelitis optica (NMO) spectrum disorders are rapidly evolving. Recently published international consensus diagnostic criteria (ICDC) allowed clinicians to rapidly diagnose the expanding spectrum of NMO spectrum disorders more accurately. Aims: The aim of the study was to retrospectively analyze 36 consecutive cases of comprehensively evaluated NMO spectrum disorders using the ICDC. Patients and Methods: We retrospectively collected 36 cases of NMO spectrum disorders who attended our unit between August 2012 andOctober 2016 and fulfilled the ICDC. All patients underwent magnetic resonance imaging (MRI) of the brain and whole spine with contrast, anti-aquaporin 4 antibody, and detailed blood investigations to rule out systemic vasculitis and other alternate diagnoses. Results: Female-to-male ratio was 6.2:1; 50% of the cases were in the 20-40-year age group. Six patients (16.67%) had combined optic neuritis and myelitis.Nine patients (25%) had pure longitudinally extending transverse myelitis LETM with positive anti aquaporin 4 antibody AQ4Ab. Fourteen patients (38.9%) had myelitis and optic neuritis separately. Nine patients (25%) had area postrema syndrome. Two patients (5.6%) had acute brainstem syndrome and one (2.8%) had hypothalamic syndrome. LETM was commonly found in the cervical level (69.4%).Four patients (11.1%) had no spinal cord involvement. Anti-aquaporin 4 antibody was positive only in 23 cases (63.9%). Conclusions: Initial presentation of NMO spectrum disorder is often due to brain lesions. The ICDC criteria have enhanced clinician's ability to diagnose NMO spectrum disorder in the early stages. In our study, ICDC criteria helped us to diagnose 33% additional cases that would have been missed if the old 2006 revised criteria was applied.


Subject(s)
Myelitis, Transverse , Neuromyelitis Optica , Humans , Male , Female , Neuromyelitis Optica/diagnosis , Retrospective Studies , Consensus , Myelitis, Transverse/diagnosis , Brain/pathology , Magnetic Resonance Imaging , Autoantibodies
2.
J Postgrad Med ; 67(4): 232-234, 2021.
Article in English | MEDLINE | ID: mdl-34708698

ABSTRACT

Duodenal inversum is a rare disease not frequently encountered in clinical practice. The diagnosis is usually made late due to its rarity. Many other causes of abdominal pain like ulcer disease, pancreatitis, malrotation are mostly thought of initially and the diagnosis is usually missed. Only a few cases of duodenal inversum present with outlet obstruction. Duodenojejunostomy is perhaps the ideal management for duodenal inversum if the patient presents with outlet obstruction. Our intention is to create awareness of such a rare disease with an available definitive treatment option in the form of minimally invasive surgery. One such case of a 31-year-old man is described that was successfully managed by laparoscopic duodenojejunostomy.


Subject(s)
Laparoscopy , Abdominal Pain , Adult , Anastomosis, Surgical , Humans , Male , Rare Diseases
3.
Cell Biol Toxicol ; 37(4): 611-631, 2021 08.
Article in English | MEDLINE | ID: mdl-33219891

ABSTRACT

Identifying drug candidates to target cellular events/signaling that evades von Hippel-Lindau tumor suppressor (VHL) gene interaction is critical for the cure of renal cell carcinoma (RCC). Recently, we characterized a triterpene-squalene derived from marine brown alga. Herein, we investigated the potential of squalene in targeting HIF-signaling and other drivers of RCC progression. Squalene inhibited cell proliferation, induced cell dealth and reverted the cells' metastatic state (migration, clonal expansion) independent of their VHL status. Near-identical inhibition of HIF-1α and HIF-2α and the regulation of downstream targets in VHL wild type and mutant cell lines demonstrated squalene efficacy beyond VHL-HIF interaction. In a rat model of chemically induced RCC, squalene displayed chemopreventive capabilities by substantial reversal of lipid peroxidation, mitochondrial redox regulation, maintaining ∆ψm, inflammation [Akt, nuclear factor κB (NF-κB)], angiogenesis (VEGFα), metastasis [matrix metalloproteinase 2 (MMP-2)], and survival (Bax/Bcl2, cytochrome-c, Casp3). Squalene restored glutathione, glutathione reductase, glutathione-s-transferase, catalase, and superoxide dismutase and stabilized alkaline phosphatase, alkaline transaminase, and aspartate transaminase. The correlation of thiobarbituric acid reactive substance with VEGF/NF-κB and negative association of GSH with Casp3 show that squalene employs reduction in ROS regulation. Cytokinesis-block micronuclei (CBMN) assay in VHLwt/mut cells revealed both direct and bystander effects of squalene with increased micronucleus (MN) frequency. Clastogenicity analysis of rat bone marrow cells demonstrated an anti-clastogenic effect of squalene, with increased polychromatic erythrocytes (PCEs), decreased MNPCE,s and MN normochromatic erythrocytes. Squalene could effectively target HIF signaling that orchestrate RCC evolution. The efficacy of squalene is similar in VHLwt and VHLmut RCC cells, and hence, squalene could serve as a promising drug candidate for an RCC cure beyond VHL status and VHL-HIF interaction dependency. Summary: Squalene derived from marine brown algae displays strong anti-cancer (RCC) activity, functionally targeting HIF-signaling pathway, and affects various cellular process. The significance of squalene effect for RCC is highlighted by its efficiency beyond VHL status, designating itself a promising drug candidate. Graphical abstract.


Subject(s)
Carcinoma, Renal Cell , Kidney Neoplasms , Animals , Basic Helix-Loop-Helix Transcription Factors , Carcinoma, Renal Cell/drug therapy , Disease Progression , Gene Expression Regulation, Neoplastic , Hypoxia-Inducible Factor 1, alpha Subunit , Matrix Metalloproteinase 2 , Rats , Squalene , Von Hippel-Lindau Tumor Suppressor Protein/genetics
4.
Environ Toxicol ; 33(11): 1135-1142, 2018 Nov.
Article in English | MEDLINE | ID: mdl-30126067

ABSTRACT

In our previous work, we assessed the ameliorative effect of crude extract from Padina boergesenii. In this report, we have extended these study by fractionating the methanol extract with methanol:ethylacetate (1:3,v/v) (MME-F) and assessed the cytotoxic effect of MME-F fraction in human renal carcinoma cell lines (A498 and ACHN). The fraction had time-and dose-dependent inhibition of cancer cell proliferation, migration with deceleration of cancer growth at EC50 -22.73 µg in A498 and 26.43 µg in ACHN cells. Cells treated at EC50 value 25 µg displayed twofold greater ability to induce early and late stage of apoptosis. The cells treated with polyphenolic fraction (MME-F) induced cell cycle arrest at G2/M phase. HPLC/DAD chromatographic procedures quantified polyphenols from active fraction (MME-F). These data revealed the functional activity of polyphenols from brown alga, P. boergesenii as a potent inhibitor of cancer proliferation with induction of apoptosis, it suggest their applicability in preventing cancer metastasis.


Subject(s)
Carcinoma, Renal Cell/pathology , Cell Extracts/pharmacology , Cell Proliferation/drug effects , Kidney Neoplasms/pathology , Phaeophyceae/chemistry , Polyphenols/pharmacology , Apoptosis/drug effects , Cell Cycle Checkpoints/drug effects , Cell Division/drug effects , Cell Extracts/chemistry , Cell Line, Tumor , Down-Regulation/drug effects , Humans , Polyphenols/chemistry
5.
Ann Indian Acad Neurol ; 21(1): 49-56, 2018.
Article in English | MEDLINE | ID: mdl-29720798

ABSTRACT

CONTEXT: Mercury is used extensively in the preparation of Siddha medicines, after purification. In this study, we present 32 patients of mercury toxicity following unauthorized Siddha medicine intake who mimicked neuromyotonia clinically. We analyzed the clinical features of these patients, the role of autoimmunity in etiopathology, and compared it with acquired neuromyotonia. SUBJECTS AND METHODS: This is a retrospective study to analyze inpatients in a tertiary care center, admitted with mercury toxicity following Siddha medicine intake from August 2012 to October 2016. We analyzed the clinical features, laboratory data including mercury, arsenic and lead levels in blood, and serum voltage-gated potassium channels (VGKC)-CASPR2 Ab in selected patients. RESULTS: Thirty-two patients who had high blood mercury levels following Siddha medicine intake were included in the study. All patients (100%) had severe intractable neuropathic pain predominantly involving lower limbs. Twenty-six (81.25%) patients had fasciculations and myokymia. Fifteen patients (46.86%) had autonomic dysfunction (postural hypotension and resting tachycardia). Nine (28.12%) patients had encephalopathic features such as dullness, apathy, drowsiness, or delirium. Anti-VGKC Ab was positive in 12 patients with myokymia. All the patients in the study consumed Siddha medicines obtained from unauthorized dealers. CONCLUSIONS: Mercury toxicity following Siddha medicine intake closely mimics acquired neuromyotonia; severe intolerable neuropathic pain is the hallmark feature; Positive VGKC-CASPR2 antibody in some patients must be due to triggered autoimmunity secondary to mercury toxicity due to Siddha medicine intake. The government should establish licensing system to prevent distribution of unauthorized Siddha medicines.

6.
Fish Shellfish Immunol ; 71: 399-410, 2017 Dec.
Article in English | MEDLINE | ID: mdl-29032039

ABSTRACT

White Spot Syndrome Virus (WSSV) is one of the most important causative agents of Penaeid shrimps diseases that incur heavy losses to the shrimp aquaculture. It has severe impact on the sustainability and the production of Penaeus monodon. Hence, the present study focussed on the investigation of Poly-ß-hydroxybutyrate/biosurfactant as immunostimulants against WSSV infected shrimps. Infection of WSSV was periodically checked in all the experimental shrimps using PCR diagnostic kit. After ensuring all shrimps were free of viral infection, experiments were carried out to analyze the nonspecific immune responses (prophenol oxidase, nitro blue tetrazolium reduction assay and total haemocyte count) both in control and experimental group. Further, gills and muscles of Penaeus monodon were subjected to proteome analysis after treated it with PHB/biosurfactant independently in the concentration of 2% and 5% each. Increase in the level of haemocytes was observed in both PHB (26 ± 2 × 104 cells)/biosurfactant (28 ± 2 × 104 cells) treated shrimps, when compared with control (17 ± 2 × 104 cells). proPhenolOxidase (proPO) activity was also enhanced in treated groups compared to WSSV infected shrimps. Less production of superoxide anion was observed in control and treated groups. Differences in the protein expression was analyzed in muscle tissue of control, WSSV infected and PHB/biosurfactant treated shrimps. Our finding suggested that partial substitution of feed with 2% PHB and biosurfactant showed increased rate on the survival of WSSV infected P. monodon which might be due to either the over expression/down regulation of proteins that play a vital role in enhancing the immune system/the progression of the disease respectively.


Subject(s)
Hydroxybutyrates/metabolism , Immunity, Innate , Penaeidae/immunology , Polyesters/metabolism , Staphylococcus hominis/chemistry , Surface-Active Agents/metabolism , White spot syndrome virus 1/drug effects , Animal Feed/analysis , Animals , Diet , Dietary Supplements/analysis , Hydroxybutyrates/administration & dosage , Polyesters/administration & dosage , Surface-Active Agents/administration & dosage
7.
Oncotarget ; 8(4): 5717-5734, 2017 Jan 24.
Article in English | MEDLINE | ID: mdl-27974694

ABSTRACT

Therapy-resistant pancreatic cancer (PC) cells play a crucial role in tumor relapse, recurrence, and metastasis. Recently, we showed the anti-PC potential of an array of seaweed polyphenols and identified efficient drug deliverables. Herein, we investigated the benefit of one such deliverable, Hormophysa triquerta polyphenol (HT-EA), in regulating the dissemination physiognomy of therapy-resistant PC cells in vitro,and residual PC in vivo. Human PC cells exposed to ionizing radiation (IR), with/without HT-EA pre-treatment were examined for the alterations in the tumor invasion/metastasis (TIM) transcriptome (93 genes, QPCR-profiling). Utilizing a mouse model of residual PC, we investigated the benefit of HT-EA in the translation regulation of crucial TIM targets (TMA-IHC). Radiation activated 30, 50, 15, and 38 TIM molecules in surviving Panc-1, Panc-3.27, BxPC3, and MiaPaCa-2 cells. Of these, 15, 44, 12, and 26 molecules were suppressed with HT-EA pre-treatment. CXCR4 and COX2 exhibited cell-line-independent increases after IR, and was completely suppressed with HT-EA, across all PC cells. HT-EA treatment resulted in translational repression of IR-induced CXCR4, COX2, ß-catenin, MMP9, Ki-67, BAPX, PhPT-1, MEGF10, and GRB10 in residual PC. Muting CXCR4 or COX2 regulated the migration/invasion potential of IR-surviving cells, while forced expression of CXCR4 or COX2 significantly increased migration/invasion capabilities of PC cells. Further, treatment with HT-EA significantly inhibited IR-induced and CXCR4/COX2 forced expression-induced PC cell migration/invasion. This study (i) documents the TIM blueprint in therapy-resistant PC cells, (ii) defines the role of CXCR4 and COX2 in induced metastatic potential, and (iii) recognizes the potential of HT-EA in deterring the CXCR4/COX2-dependent dissemination destiny of therapy-resistant residual PC cells.


Subject(s)
Cyclooxygenase 2/genetics , Pancreatic Neoplasms/drug therapy , Pancreatic Neoplasms/radiotherapy , Phaeophyceae/chemistry , Polyphenols/administration & dosage , Receptors, CXCR4/genetics , Animals , Cell Line, Tumor , Cell Movement/drug effects , Down-Regulation , Drug Resistance, Neoplasm/drug effects , Gene Expression Profiling , Gene Expression Regulation, Neoplastic/drug effects , Humans , Mice , Neoplasm Invasiveness , Neoplasm, Residual , Pancreatic Neoplasms/genetics , Plant Extracts/chemistry , Polyphenols/pharmacology , Seaweed/chemistry , Xenograft Model Antitumor Assays
8.
J Assoc Physicians India ; 64(11): 97-98, 2016 11.
Article in English | MEDLINE | ID: mdl-27805351

ABSTRACT

Prader-Willi syndrome is a genomic imprinting disorder, characterized by obesity, hyperphagia, mental retardation, short stature and hypogonadism. The presenting signs and symptoms depend upon the age at which the patient is seen. Here we report a case of Prader-Willi syndrome, who presented at 16 years of age with diabetes mellitus and cryptorchidism.


Subject(s)
Prader-Willi Syndrome/diagnosis , Adolescent , Cryptorchidism/pathology , Diabetes Mellitus , Humans , Male , Pediatric Obesity , Phenotype
9.
Int J Syst Evol Microbiol ; 66(9): 3443-3448, 2016 Sep.
Article in English | MEDLINE | ID: mdl-27264911

ABSTRACT

A Gram-staining-positive, aerobic, motile, rod-shaped (0.4-0.5×2.0-4.0 µm), endospore-forming bacterium, designated strain NIOT.bflm.S4T, was isolated from biofilm formed on high-density polyethylene test coupons in coastal seawater. The strain required seawater for growth. It grew with 1.0-8.0 % (w/v) NaCl, at 4-45 °C and at pH 6.5-9.0, with optimum growth with 4.0-5.0 % (w/v) NaCl, at 30 °C and at pH 7.0-8.0. Phylogenetic analyses based on 16S rRNA and partial dnaK gene sequences showed that strain NIOT.bflm.S4T formed a phylogenetic lineage with Pseudogracilibacillus auburnensis P-207T, the only known species of the genus Pseudogracilibacillusand shared sequence identities of 96.9 and 83 %, respectively, with this strain. The identities of 16S rRNA and partial dnaK gene sequences with members of other related genera such as Gracilibacillus, Paraliobacillus, Ornithinibacillus, Oceanobacillus, Virgibacillus and Lentibacillus were ≤95 and ≤78 %, respectively. The DNA G+C content of strain NIOT.bflm.S4T was 39.1 mol%. MK-7 was found as the sole isoprenoid quinone. The major polar lipids of strain NIOT.bflm.S4T were diphosphatidylglycerol, phosphatidylethanolamine and an unknown lipid. The diagnostic diamino acid of the cell-wall peptidoglycan was meso-diaminopimelic acid. Major cellular fatty acids were anteiso-C15 : 0 (27.9 %), anteiso-C17 : 0 (18.6 %), C12 : 0 (8.7 %) and iso-C15 : 0 (6.6 %). On the basis of phenotypic, phylogenetic and chemotaxonomic results, we propose that the isolate represents a novel species of the genus Pseudogracilibacillus, for which the name Pseudogracilibacillus marinus sp. nov. is proposed. The type strain is NIOT.bflm.S4T (=KACC 18456T=MTCC 12376T=TBRC 5831T).


Subject(s)
Bacillaceae/classification , Biofilms , Phylogeny , Seawater/microbiology , Bacillaceae/genetics , Bacillaceae/isolation & purification , Bacterial Typing Techniques , Base Composition , DNA, Bacterial/genetics , Diaminopimelic Acid/chemistry , Fatty Acids/chemistry , Genes, Bacterial , India , Peptidoglycan/chemistry , Phospholipids/chemistry , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA
10.
Ann R Coll Surg Engl ; 97(5): 345-8, 2015 Jul.
Article in English | MEDLINE | ID: mdl-26264084

ABSTRACT

INTRODUCTION: Since its first description by Delaitre and Maignien in 1991, laparoscopic splenectomy (LS) has evolved as treatment of choice for mild-to-moderately-enlarged spleens and for benign haematological disorders. LS is a challenge if massive spleens or malignant conditions necessitate treatment, but we report our method and its feasibility in this study. METHODS: We undertook a retrospective study of prospectively collected data of all elective splenectomies carried out in our firm of upper gastrointestinal surgeons from June 2003 to June 2012. Only patients opting for elective LS were included in this study. RESULTS: From June 2003 to June 2012, elective splenectomy was carried out in 80 patients. Sixty-seven patients underwent LS and 13 underwent open splenectomy (OS). In the LS group, there were 38 males and 29 females. Age ranged from 6 years to 82 years. Spleen size in the LS group ranged from ≤11 cm to 27.6 cm. Twelve patients had a spleen size of >20 cm. Weight ranged from 35 g to 2,400 g. Eighteen patients had a spleen weight of 600-1,600 g and eight had a spleen weight >1,600 g. Operating times were available for 56 patients. Mean operating time for massive spleens was 129.73 min. There was no conversion to OS. There were no major complications. CONCLUSIONS: With improved laparoscopic expertise and advancing technology, LS is safe and feasible even for massive spleens and splenic malignancies. It is the emerging 'gold standard' for all elective splenectomies and has very few contraindications.


Subject(s)
Laparoscopy/methods , Spleen/pathology , Spleen/surgery , Splenectomy/methods , Adolescent , Adult , Aged , Aged, 80 and over , Child , Female , Humans , Laparoscopy/standards , Male , Middle Aged , Organ Size , Postoperative Complications , Retrospective Studies , Splenectomy/standards , Young Adult
11.
Environ Toxicol ; 30(8): 865-76, 2015 Jul 08.
Article in English | MEDLINE | ID: mdl-24458998

ABSTRACT

The aim of this study was to evaluate the antioxidant activities of diethyl ether (DEE) and methanol (M) extracts from brown alga Padina boergesenii using in vitro and in vivo antioxidant assay, which may help to relate the antioxidant properties with the possible outline of its ameliorative effect. M extract showed higher radical scavenging activity through ferric reducing antioxidant power 139.11 µmol tannic acid equivalent/g; DPPH 71.32 ± 0.56%; deoxyribose radical 88.31 ± 0.47%, and total antioxidant activity 0.47 ± 0.02 mg ascorbic acid equivalents/g. Oxidative red blood cell (RBC) hemolysis inhibition rate was significantly higher in M extract (150 mg/kg body weight) in reference to total phenolic content (r = 0.935). Rats administered with DEE and M extracts (150 mg/kg body weight) for seven days before the administration of ferric nitrilotriacetate (9 mg of Fe/mg/kg bodyweight). Rats pretreated with extracts significantly changed the level of renal microsomal lipid peroxidation, glutathione, and antioxidant enzymes in post-mitochondrial supernatant (P < 0.05). Ameliorative effect of extracts against renal oxidative damage was evident in rat kidney through changes in necrotic and epithelial cells. HPTLC technique has identified the presence of rutin with reference to retardation factor (Rf ) in both the extracts. These findings support the source of polyphenols (rutin) from P. boergesenii had potent antioxidant activity; further work on isolation of bioactive compounds can be channeled to develop as a natural antioxidant.


Subject(s)
Antioxidants/pharmacology , Ferric Compounds/antagonists & inhibitors , Ferric Compounds/toxicity , Free Radicals/toxicity , Hemolysis/drug effects , Kidney Diseases/chemically induced , Kidney Diseases/prevention & control , Nitrilotriacetic Acid/analogs & derivatives , Oxidative Stress/drug effects , Phaeophyceae/chemistry , Plant Extracts/pharmacology , Polyphenols/pharmacology , Animals , Deoxyribose/chemistry , Deoxyribose/pharmacology , Epithelial Cells/drug effects , Female , In Vitro Techniques , Kidney Diseases/metabolism , Microsomes/drug effects , Necrosis , Nitrilotriacetic Acid/antagonists & inhibitors , Nitrilotriacetic Acid/toxicity , Rats , Rats, Wistar , Rutin/analysis , Tannins/pharmacology
12.
PLoS One ; 8(4): e61977, 2013.
Article in English | MEDLINE | ID: mdl-23613993

ABSTRACT

Pancreatic cancer (PC) remains the fourth leading cause of cancer death with an unacceptable survival that has remained relatively unchanged over the past 25 years. The presence of occult or clinical metastases at the time of diagnosis together with the lack of effective chemotherapies pose a dire need for designing new and targeted therapeutic deliverables that favors the clinical outcome. Herein, we investigated the anti-tumorigenic potential of polyphenols from five different brown-algae in human PC cells (MiaPaCa-2, Panc-1, BXPC-3 and Panc-3.27). Total anti-oxidant capacity (TAC) analysis on stepwise polyphenol separations with increasing polarity (Hexane-DCM-EA-methanol) identified high levels of TAC in DCM and EA extractions across all seaweeds assessed. All DCM and EA separated polyphenols induced a dose-dependent and sustained (time-independent) inhibition of cell proliferation and viability. Further, these polyphenols profoundly enhanced DNA damage (acridine orange/Ethidium bromide staining and DNA fragmentation) in all the cell lines investigated. More importantly, luciferase reporter assay revealed a significant inhibition of NFκB transcription in cells treated with polyphenols. Interestingly, QPCR analysis identified a differential yet definite regulation of pro-tumorigenic EGFR, VEGFA, AKT, hTERT, kRas, Bcl2, FGFα and PDGFα transcription in cells treated with DCM and EA polyphenols. Immunoblotting validates the inhibitory potential of seaweed polyphenols in EGFR phosphorylation, kRas, AurKß and Stat3. Together, these data suggest that intermediate polarity based fractions of seaweed polyphenols may significantly potentiate tumor cell killing and may serve as potential drug deliverable for PC cure. More Studies dissecting out the active constituents in potent fractions, mechanisms of action and synergism, if any, are warranted and are currently in process.


Subject(s)
Pancreatic Neoplasms/drug therapy , Phaeophyceae/chemistry , Polyphenols/therapeutic use , Apoptosis/drug effects , Cell Line, Tumor , Cell Proliferation/drug effects , Humans , Phosphorylation/drug effects , Proto-Oncogene Proteins c-akt
13.
Ann R Coll Surg Engl ; 95(2): e44-6, 2013 Mar.
Article in English | MEDLINE | ID: mdl-23484982

ABSTRACT

Lower gastrointestinal bleeding is a common general surgical presentation in acute and chronic settings. Vascular anomalies account for 2% of such cases and can therefore be missed. We discuss a rare vascular anomaly in one of our patients where the diagnosis was not established for a ten-year period. We describe the subsequent management and a brief review of the literature of this uncommon condition.


Subject(s)
Arteriovenous Malformations/complications , Gastrointestinal Hemorrhage/etiology , Hemangioma/complications , Sigmoid Neoplasms/complications , Arteriovenous Malformations/pathology , Chronic Disease , Delayed Diagnosis , Female , Gastrointestinal Hemorrhage/pathology , Hemangioma/pathology , Humans , Middle Aged , Preoperative Care , Sigmoid Neoplasms/pathology , Tomography, X-Ray Computed
14.
Aust Dent J ; 57(4): 404-8, 2012 Dec.
Article in English | MEDLINE | ID: mdl-23186562

ABSTRACT

The pathogenesis of enamel caries involves a succession of demineralization and remineralization activities. The net effect can result in lesion consolidation when the redeposited minerals improve the resistance of the surface to the extent that the usual level of cariogenic activity cannot cause mineral dissolution. Since it has been established that the caries process is a continuum, albeit one that is interrupted numerous times daily, it is therefore possible to intervene at any stage with a therapeutic product or an intervention methodology. Incorporation of remineralizing treatments into routine dental care programmes will have a strong impact on the public health aspects of caries control. A recent advancement in the phenomenon of remineralization is the casein phosphopeptides. These casein phosphopeptides localize the amorphous calcium phosphate and are proved to be anticariogenic. This review discusses the mechanism of remineralization by casein phosphopeptide-amorphous calcium phosphate and its incorporation into various products.


Subject(s)
Cariostatic Agents/therapeutic use , Caseins/therapeutic use , Dental Caries/drug therapy , Phosphopeptides/therapeutic use , Tooth Remineralization/methods , Calcium Phosphates/chemistry , Chewing Gum , Fluorides/chemistry , Humans , Mouthwashes/chemistry , Pit and Fissure Sealants/chemistry
15.
Indian J Dermatol ; 56(1): 107-9, 2011 Jan.
Article in English | MEDLINE | ID: mdl-21572808

ABSTRACT

Hypereosinophilic syndrome (HES) encompasses a group of leukoproliferative disorders with variable involvement of the internal organs. More than half of all patients have cutaneous involvement. In a minority of the reported cases, skin involvement has been the only manifestation of HES . We report one such rare case of HES, with cutaneous involvement as the sole manifestation.

16.
Int J Pediatr Otorhinolaryngol ; 75(1): 131-3, 2011 Jan.
Article in English | MEDLINE | ID: mdl-21067822

ABSTRACT

Diprosopus or duplication of the lower lip and mandible is a very rare congenital anomaly. We report this unusual case occurring in a girl who presented to our hospital at the age of 4 months. Surgery and problems related to this anomaly are discussed.


Subject(s)
Craniofacial Abnormalities/surgery , Lip/abnormalities , Mandible/abnormalities , Plastic Surgery Procedures/methods , Abnormalities, Multiple/diagnosis , Abnormalities, Multiple/surgery , Craniofacial Abnormalities/diagnosis , Esthetics , Female , Follow-Up Studies , Humans , Infant , Lip/surgery , Mandible/surgery , Reoperation , Risk Assessment , Treatment Outcome
17.
Clin Ter ; 161(5): 453-5, 2010.
Article in English | MEDLINE | ID: mdl-20949243

ABSTRACT

For the management of a full-thickness scalp avulsion injury, thorough wound debridement and immediate primary revascularization or a split-thickness skin graft may be necessary. Graft failure may be common situation thereby predisposing the individuals to unnecessary multiple operations. In the recent times, the use of omental graft has gained much popularity. In the present study, we describe an interesting case of chronic non healing scalp ulcer in a young woman who eventually underwent a free omental flap reconstruction with split-thickness skin graft and had satisfactory outcome.


Subject(s)
Scalp/injuries , Scalp/surgery , Skin Transplantation , Surgical Flaps , Adult , Female , Humans , Omentum/transplantation , Plastic Surgery Procedures
18.
Br J Surg ; 97(8): 1232-9, 2010 Aug.
Article in English | MEDLINE | ID: mdl-20593429

ABSTRACT

BACKGROUND: Intraoperative diagnosis of sentinel node metastases enables an immediate decision to proceed to axillary lymph node dissection, avoiding a second operation in node-positive women with breast cancer. METHODS: An optical scanner was developed that interrogated the cut surface of bivalved, but otherwise unprocessed, sentinel lymph nodes with pulses of white light by elastic scattering spectroscopy (ESS). The scattered light underwent spectral analysis, and individual spectra were initially correlated with conventional histology to develop a diagnostic algorithm. This algorithm was used to create false colour-coded maps of scans from an independent set of nodes, and the optimal criteria for discriminating between normal and cancer spectra were defined statistically. RESULTS: The discriminant algorithm was developed from a training set of 2989 spectra obtained from 30 metastatic and 331 normal nodes. Subsequent scans from 129 independent nodes were analysed. The scanner detected macrometastases (larger than 2 mm) with a sensitivity of 76 per cent (69 per cent including micrometastases) and specificity of 96 per cent. CONCLUSION: In this proof-of-principle study, the ESS results were comparable with current intraoperative diagnostic techniques of lymph node assessment.


Subject(s)
Breast Neoplasms/diagnosis , Diagnosis, Computer-Assisted/methods , Intraoperative Care/methods , Lymphatic Metastasis/diagnosis , Sentinel Lymph Node Biopsy , Spectrum Analysis/methods , Algorithms , Breast Neoplasms/surgery , Equipment Design , Female , Humans , Intraoperative Care/instrumentation , Lymph Node Excision , ROC Curve , Scattering, Radiation , Sensitivity and Specificity , Spectrum Analysis/instrumentation
19.
Curr Microbiol ; 61(4): 235-40, 2010 Oct.
Article in English | MEDLINE | ID: mdl-20140436

ABSTRACT

Vibrio parahaemolyticus is a natural microflora of marine and coastal water bodies and associated with mortality of larval shrimp in penaeid shrimp in ponds. Bacteriophages occur virtually in all places where their hosts exist. In this study, total distribution of V. parahaemolyticus and its phages were examined in shrimp ponds, seawater, estuary, animal surface, and tissues. Total vibrio count in sediments of two ponds was found to be 2.6 × 10(3) and 5.6 × 10(3) cfu/g. Incidence of V. parahaemolyticus in the ponds was close, while it was markedly higher in the animal surface and tissue samples. Biochemically identified eight strains of V. parahaemolyticus (V1, V3-V6, V9, V11, and V12) were taken for further infection studies with bacteriophage. Totally five bacteriophages capable of infecting V. parahaemolyticus MTCC-451 strain were isolated from all the samples. One of the isolated bacteriophage Vp1 from estuary was able to lyse all the isolated V. parahaemolyticus strains we used. Therefore, the morphology of Vp1 was estimated in TEM. Vp1 phage head measuring approximately about 50-60 nm diameter with icosahedral outline and a contractile tails of diameter 7 nm and length 100 nm and it was identified as Myoviridae. Therefore, the phages have the potential application in destroying bacterial pathogens.


Subject(s)
Bacteriophages/isolation & purification , Myoviridae/isolation & purification , Penaeidae , Shellfish/microbiology , Vibrio parahaemolyticus/isolation & purification , Water Microbiology , Animals , Aquaculture , Bacteriophages/classification , Bacteriophages/growth & development , Food Contamination , Geologic Sediments/microbiology , India , Microscopy, Electron , Myoviridae/classification , Myoviridae/growth & development , Oceans and Seas , Seawater/microbiology , Seawater/virology , Vibrio parahaemolyticus/pathogenicity , Vibrio parahaemolyticus/virology
20.
Methods Find Exp Clin Pharmacol ; 31(5): 311-6, 2009 Jun.
Article in English | MEDLINE | ID: mdl-19649337

ABSTRACT

Glycosaminoglycan (GAG) of the heparin family was localized in the tissues of the bivalve mollusk Donax cuneatus. Different histological staining procedures such as Alcian blue, azure-A, safranin and periodic acid-Schiff reagent (PAS) were followed to test the presence of GAG in various tissues of this bivalve mollusk. GAG was found in the tissues of gill, palp, ctenidia, foot, mantle, inhalant and adductor muscle in order of decreasing importance. Palp, gill and ctenidia tissues showed high staining intensity with PAS (94.8%) processing and Alcian blue (92.4%) indicated the presence of sulfated polysaccharide. Crude GAG was isolated from these tissues using the cetylpyridinium chloride precipitation method. The product obtained was tested for its anticoagulant property along with standard heparin, which was partially purified by fractionation by anion exchange chromatography using a diethylaminoethyl (DEAE)-cellulose column. The isolated GAG and fractionated GAG were also compared with standard heparin through Fourier transform infrared (FT-IR) to find relevant functional groups. The bivalve GAG was subjected to DEAE-cellulose fractionation for further purification and its chemical components were analyzed. The subsequent comparison with commercial heparin showed that D. cuneatus could be a potent source of heparin for commercial use.


Subject(s)
Bivalvia/chemistry , Heparin/analysis , Animals , Glycosaminoglycans/analysis , Spectroscopy, Fourier Transform Infrared
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