Role of Hypoxia Induced by Medicinal Plants; A Revolutionary Era of Cellular and Molecular Herbal Medicine in Neuroblastoma Treatment.

As one of the most common solid pediatric cancers, Neuroblastoma (NBL) accounts for 15% of all of the cancer-related mortalities in infants with increasing incidence all around the world. Despite current therapeutic approaches for NBL (radiotherapies, surgeries, and chemotherapies), these approaches could not be beneficial for all of patients with NBL due to their low effectiveness, and some severe side effects. These challenges lead basic medical scientists and clinical specialists toward an optimal medical interventions for clinical management of NBL.

The inhibitory effect of boric acid on hypoxia-regulated tumour-associated carbonic anhydrase IX.

Carbonic anhydrases (EC 4.2.1.

Is carbonic anhydrase inhibition useful as a complementary therapy of Covid-19 infection?

The ongoing Covid-19 is a contagious disease, and it is characterised by different symptoms such as fever, cough, and shortness of breath. Rising concerns about Covid-19 have severely affected the healthcare system in all countries as the Covid-19 outbreak has developed at a rapid rate all around the globe. Intriguing, a clinically used drug, acetazolamide (a specific inhibitor of carbonic anhydrase, CA, EC 4.

Carbonic anhydrase IX as a novel candidate in liquid biopsy.

Among the diagnostic techniques for the identification of tumour biomarkers, the liquid biopsy is considered one that offers future research on precision diagnosis and treatment of tumours in a non-invasive manner. The approach consists of isolating tumor-derived components, such as circulating tumour cells (CTC), tumour cell-free DNA (ctDNA), and extracellular vesicles (EVs), from the patient peripheral blood fluids. These elements constitute a source of genomic and proteomic information for cancer treatment.

Do CO and oxidative stress induce cancer?: a brief study about the evaluation of PON 1, CAT, CA and XO enzyme levels on head and neck cancer patients.

Head and neck cancer (HNC) is one of the most common malignancies in the world. HNC is a group of cancers that starts in the mouth, nose, throat, larynx, sinuses, or salivary glands. According to this section of the body parts; induction of cancer can be associated with CO and oxidative stress.

Is there a relation between genetic susceptibility with cancer? A study about paraoxanase (PON1) enzyme activity in breast cancer cases.

Human serum paraoxonase 1 (PON1, EC 3.1.1.

Inhibition of carbonic anhydrase isoforms I, II, IX and XII with secondary sulfonamides incorporating benzothiazole scaffolds.

Carbonic anhydrases (CAs, EC 4.2.1.

A magnificent enzyme superfamily: carbonic anhydrases, their purification and characterization.

In this paper, we reviewed the purification and characterization methods of the α-carbonic anhydrase (CA, EC 4.2.1.

Synthesis, carbonic anhydrase inhibition and cytotoxic activity of novel chromone-based sulfonamide derivatives.

Four series of sulfonamides incorporating chromone moieties were synthesized and assessed for their cytotoxic activity against MCF-7 and A-549 cell lines, considering the fact that some of these tumors overexpress isoforms of carbonic anhydrase (CA, EC 4.2.1.

A new affinity method for purification of bovine testicular hyaluronidase enzyme and an investigation of the effects of some compounds on this enzyme.

In this study, a new affinity gel for the purification of bovine testicular hyaluronidase (BTH) was synthesized. L-Tyrosine was added as the extension arm to the Sepharose-4B activated with cyanogen bromide. m-Anisidine is a specific inhibitor of BTH enzyme.

Differential in vitro inhibition studies of some cerium vanadate derivatives on xanthine oxidase.

In this preliminary study, a new series of some cerium vanadate derivatives have been investigated as new type of inhibitors of xanthine oxidase (XO; E.C 1.17.

A new affinity gel for the purification of α-carbonic anhdrases.

The new affinity gel reported in this study was prepared using EUPERGIT C250L as a chromatographic bed material, to which etylenediamine spacer arms were attached to prevent steric hindrance between the matrix and ligand, and to facilitate effective binding of the CA-specific ligand, of the aromatic sulfonamide type for the purification of α-carbonic anhydrases (Cas; EC 4.2.1.

Catalase, carbonic anhydrase and xanthine oxidase activities in patients with mycosis fungoides.

Mycosis fungoides (MF) is the most common form of cutaneous T-cell lymphoma. In several studies the relationship between catalase (CAT), human cytosolic carbonic anhydrases (CA; hCA-I and hCA-II) and xanthine oxidase (XO) enzyme activities have been investigated in various types of cancers but carbonic anhydrase, catalase and xanthine oxidase activities in patients with MF have not been previously reported. Therefore, in this preliminary study we aim to investigate CAT, CA and XO activities in patients with MF.

Purification of bovine serum paraoxonase and its immobilization on Eupergit C 250 L by covalent attachment.

Serum paraoxonase (PON1) is a high-density lipoprotein (HDL)-associated enzyme that protects lipoproteins, both low-density lipoprotein (LDL) and HDL, against oxidation, and is considered as an antioxidative/anti-inflammatory component of HDL. In this study, PON1 was purified from bovine serum by ammonium sulfate precipitation and hydrophobic interaction chromatography on sepharose-4B-l-tyrosine-1-napthylamine. It was then immobilized on an unmodified Eupergit® C 250 L support.

Carbonic anhydrase inhibitors. Phenols incorporating 2- or 3-pyridyl-ethenylcarbonyl and tertiary amine moieties strongly inhibit Saccharomyces cerevisiae β-carbonic anhydrase.

A series of phenols incorporating tertiary amine and trans-pyridylethenyl-carbonyl moieties were assayed as inhibitors of the β-carbonic anhydrase (CA, EC 4.2.1.

Investigation of heavy metal effects on immobilized paraoxanase by glutaraldehyde.

Serum paraoxonase 1 (PON1) was purified from bovine serum using hydrophobic interaction chromotography on Sepharose 4B-coupled l-tyrosine 1-naphthylamine gel, and monitored by sodium dodecyl sulfate polyacrylamide gel electrophoresis. Paraoxonase enzyme was immobilized using different ratios of glutaraldehyde and the maximum activity was observed with 7% glutaraldehyde. The effects of inhibition by Mn(+2), Co(+2) and Cu(+2) heavy metals on the immobilized and free enzyme activities were studied.

In vitro efficacy of some cattle drugs on bovine serum paraoxonase 1 (PON1) activity.

Serum paraoxonase 1 (EC 3.1.8.

Saccharomyces cerevisiae β-carbonic anhydrase: inhibition and activation studies.

The β-carbonic anhydrase from Saccharomyces cerevisiae (CA, EC 4.2.1.

Mutation of Phe91 to Asn in human carbonic anhydrase I unexpectedly enhanced both catalytic activity and affinity for sulfonamide inhibitors.

Site-directed mutagenesis has been used to change one amino acid residue considered non essential (Phe91Asn) to catalysis in carbonic anhydrase (CA, EC 4.2.1.

Carbonic anhydrase activators: activation of the beta-carbonic anhydrase Nce103 from the yeast Saccharomyces cerevisiae with amines and amino acids.

The protein encoded by the Nce103 gene of Saccharomyces cerevisiae, a beta-carbonic anhydrase (CA, EC 4.2.1.

Carbonic anhydrase inhibitors: inhibition of the beta-class enzyme from the yeast Saccharomyces cerevisiae with sulfonamides and sulfamates.

The protein encoded by the Nce103 gene of Saccharomyces cerevisiae, a beta-carbonic anhydrase (CA, EC 4.2.1.

Carbonic anhydrase inhibitors. Inhibition of the beta-class enzyme from the yeast Saccharomyces cerevisiae with anions.

The protein encoded by the Nce103 gene of Saccharomyces cerevisiae, a beta-carbonic anhydrase (CA, EC 4.2.1.

Differential in vitro inhibition of polyphenoloxidase from a wild edible mushroom Lactarius salmonicolor.

The polyphenol oxidase (LsPPO) from a wild edible mushroom Lactarius salmonicolor was purified using a Sepharose 4B-L-tyrosine-p-amino benzoic acid affinity column. At the optimum pH and temperature, the K(M) and V(Max) values of LsPPO towards catechol, 4-methylcatechol and pyrogallol were determined as 0.025 M & 0.