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Chiro-Inositol AND Insulin

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https://www.readbyqxmd.com/read/29786442/synthesis-of-c-glycoinositols-from-c-glycosylcrotylstannanes
#1
Ahmad S Altiti, David R Mootoo
A strategy for the synthesis of C-pseudodisaccharides that centers on the reaction of a C-linked crotyltin and a substituted pent-4-enal and a ring-closing metathesis-alkene dihydroxylation sequence on the derived crotylation products is illustrated in the preparation of analogues of the insulin modulatory inositol galactosamine-β-(1 → 4)-3-O-methyl-d- chiro-inositol (β-INS-2). The modularity of this approach and versatility of the pivotal crotylation products make this a potentially general methodology for diverse libraries of C-glycoinositols...
June 15, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29774465/effect-of-inositol-stereoisomers-at-different-dosages-in-gestational-diabetes-an-open-label-parallel-randomized-controlled-trial
#2
RANDOMIZED CONTROLLED TRIAL
Federica Fraticelli, Claudio Celentano, Isaia Al Zecca, Giacoma Di Vieste, Basilio Pintaudi, Marco Liberati, Marica Franzago, Marta Di Nicola, Ester Vitacolonna
AIMS: Gestational diabetes mellitus (GDM) is the most common metabolic disorder of pregnancy. The aim of the study is to compare the effect of different dosages of inositol stereoisomers supplementation on insulin resistance levels and several maternal-fetal outcomes in GDM women. METHODS: Participants were randomly allocated to receive daily: 400 mcg folic acid (control treatment), 4000 mg myo-inositol plus 400 mcg folic acid (MI treatment), 500 mg D-chiro-inositol plus 400 mcg folic acid (DCI treatment) or 1100/27...
August 2018: Acta Diabetologica
https://www.readbyqxmd.com/read/29344438/new-therapeutic-approaches-in-obesity-and-metabolic-syndrome-associated-with-polycystic-ovary-syndrome
#3
REVIEW
Fatima Saleem, Syed W Rizvi
Polycystic ovary syndrome (PCOS) is a pathophysiological disorder affecting reproductive and metabolic indices. PCOS is commonly associated with a high prevalence of insulin resistance and obesity; this association carries an increased risk of developing metabolic syndrome, type 2 diabetes mellitus (T2DM), and cardiovascular disease. Guidelines recommend lifestyle modification, metformin, hormonal contraceptives (HCs), and bariatric surgery as the main treatment options in obese patients with PCOS. Studies are being conducted to test the efficacy of existing treatment options as well as to discover new therapies...
November 13, 2017: Curēus
https://www.readbyqxmd.com/read/29183107/insulin-sensitising-drugs-metformin-rosiglitazone-pioglitazone-d-chiro-inositol-for-women-with-polycystic-ovary-syndrome-oligo-amenorrhoea-and-subfertility
#4
REVIEW
Lara C Morley, Thomas Tang, Ephia Yasmin, Robert J Norman, Adam H Balen
BACKGROUND: Polycystic ovary syndrome (PCOS) is characterised by infrequent or absent ovulation, and high levels of androgens and insulin (hyperinsulinaemia). Hyperinsulinaemia occurs secondary to insulin resistance and is associated with increased risk of cardiovascular disease and diabetes mellitus. Insulin-sensitising agents such as metformin may be effective in treating PCOS-related anovulation. OBJECTIVES: To evaluate the effectiveness and safety of insulin-sensitising drugs in improving reproductive and metabolic outcomes for women with PCOS undergoing ovulation induction...
November 29, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29153661/pkb-akt-and-mapk-erk-phosphorylation-is-highly-induced-by-inositols-novel-potential-insights-in-endothelial-dysfunction-in-preeclampsia
#5
Rossella D'Oria, Luigi Laviola, Francesco Giorgino, Vittorio Unfer, Stefano Bettocchi, Marco Scioscia
PKB/Akt and MAP/ERK are intracellular kinases regulating cell survival, proliferation and metabolism and as such hold a strategical role in preeclampsia. In fact intracellular pathways related to immunological alterations, endothelial dysfunction and insulin resistance in preeclampsia converge on these molecules. Inositol second messengers are involved in metabolic and cell signaling pathways and are highly expressed during preeclampsia. To evaluate the pathophysiological significance of this response, the effect of myo-inositol and d-chiro inositol on the activation of PKB/Akt and MAPK/ERK was assessed in human endothelial cells in vitro...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29042448/myo-inositol-effects-in-women-with-pcos-a-meta-analysis-of-randomized-controlled-trials
#6
Vittorio Unfer, Fabio Facchinetti, Beatrice Orrù, Barbara Giordani, John Nestler
Myo-inositol (MI) supplementation in women with polycystic ovary syndrome (PCOS) has been evaluated over the last years. Many hormonal and reproductive impairments associated with this disorder seem relieved by the supplement. The objective of the meta-analysis was to assess the effects of MI alone or combined with d-chiro-inositol (DCI) on the endocrine and metabolic abnormalities of women with PCOS. Literature was retrieved from selected databases, MEDLINE, EMBASE, PubMed and Research Gate (up to November 2016)...
November 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28982033/d-chiro-inositol-phosphoglycans-in-preeclampsia-where-are-we-where-are-we-going
#7
REVIEW
Marco Scioscia
Preeclampsia results from a complex interaction between immunological alterations, endothelial dysfunction, and insulin resistance. Inositol second messengers are known to be involved in metabolic signaling and are highly expressed during preeclampsia. In the past two decades, several studies were published on different aspects where these molecules are involved. It appears that maternal increase of IPG-P content in all tissues and fluids reflects an increased production of inositol mediators on the fetal side in preeclampsia...
November 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28642705/polycystic-ovary-syndrome-insights-into-the-therapeutic-approach-with-inositols
#8
REVIEW
Maria A Sortino, Salvatore Salomone, Michele O Carruba, Filippo Drago
Polycystic ovary syndrome (PCOS) is characterized by hormonal abnormalities that cause menstrual irregularity and reduce ovulation rate and fertility, associated to insulin resistance. Myo-inositol ( cis -1,2,3,5- trans -4,6-cyclohexanehexol, MI) and D-chiro-inositol ( cis -1,2,4- trans -3,5,6-cyclohexanehexol, DCI) represent promising treatments for PCOS, having shown some therapeutic benefits without substantial side effects. Because the use of inositols for treating PCOS is widespread, a deep understanding of this treatment option is needed, both in terms of potential mechanisms and efficacy...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28039583/a-pilot-study-of-d-chiro-inositol-plus-folic-acid-in-overweight-patients-with-type-1-diabetes
#9
RANDOMIZED CONTROLLED TRIAL
Anna Rita Maurizi, Marika Menduni, Rossella Del Toro, Shadi Kyanvash, Daria Maggi, Chiara Guglielmi, Angelo Lauria Pantano, Giuseppe Defeudis, Elvira Fioriti, Silvia Manfrini, Paolo Pozzilli
AIMS: To improve insulin sensitivity, insulin-sensitizing drugs such as metformin are commonly used in overweight and obese T1D patients. Similarly to metformin, D-chiro-inositol (DCI), as putative mediator of intracellular insulin action, can act as insulin sensitizer. The aim of this pilot study was to evaluate the hypothesis that DCI plus folic acid may improve glucose control reducing insulin resistance in overweight or obese T1D patients. METHODS: A 24-week randomized control trial was carried out in 26 overweight or obese T1D patients, undergoing intensive insulin therapy...
April 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/27898267/combining-treatment-with-myo-inositol-and-d-chiro-inositol-40-1-is-effective-in-restoring-ovary-function-and-metabolic-balance-in-pcos-patients
#10
REVIEW
Giovanni Monastra, Vittorio Unfer, Abdel Halim Harrath, Mariano Bizzarri
Polycystic ovary syndrome (PCOS), a relevant cause of infertility, is a heterogeneous, endocrine disorder affecting up to 10-15% of women in reproductive age. Besides hyperandrogenism, insulin resistance (IR) plays a key role in such syndrome. Insulin-sensitizing drugs, such as Metformin, are effective in treating hyper-insulinemic PCOS patients. Recently, inositols - myo-inositol (MI) and D-chiro-inositol (DCI) - have shown to be an efficient and safe alternative in PCOS management, as both inositol isoforms are able to counteract downstream consequences of insulin resistance...
January 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27882052/myoinositol-and-d-chiro-inositol-in-improving-insulin-resistance-in-obese-male-children-preliminary-data
#11
Mario Mancini, Alice Andreassi, Michela Salvioni, Fiore Pelliccione, Gianna Mantellassi, Giuseppe Banderali
Myoinositol and D-chiro inositol, which are inositol isomers, have been shown to possess insulin-mimetic properties and to improve insulin resistance, especially in women with polycystic ovary syndrome. However, it has not been determined if this relationship exists also in children. Based on these previous findings, we hypothesized that inositol could be effective in improving insulin sensitivity in children with insulin resistance. To evaluate this hypothesis, we administered both inositol formulations before carrying out an oral glucose tolerance test (OGTT) in a group of obese insulin-resistant male children with high basal insulin levels and compared the values obtained with an OGTT previously conducted without inositol, in the same group, with unchanged BMI...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27843451/effects-of-inositol-s-in-women-with-pcos-a-systematic-review-of-randomized-controlled-trials
#12
REVIEW
Vittorio Unfer, John E Nestler, Zdravko A Kamenov, Nikos Prapas, Fabio Facchinetti
Polycystic ovary syndrome (PCOS) is a common endocrine disorder, with complex etiology and pathophysiology, which remains poorly understood. It affects about 5-10% of women of reproductive age who typically suffer from obesity, hyperandrogenism, ovarian dysfunction, and menstrual irregularity. Indeed, PCOS is the most common cause of anovulatory infertility in industrialized nations, and it is associated with insulin resistance, type 2 diabetes mellitus, and increased cardiovascular risk. Although insulin resistance is not included as a criterion for diagnosis, it is a critical pathological condition of PCOS...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27807448/the-effectiveness-of-myo-inositol-and-d-chiro-inositol-treatment-in-type-2-diabetes
#13
Basilio Pintaudi, Giacoma Di Vieste, Matteo Bonomo
Inositol has been used as a supplement in treating several pathologies such as PCOS, metabolic syndrome, and gestational diabetes. Both myo-inositol and its isomer d-chiro-inositol showed insulin mimetic effects in conditions of insulin resistance. Type 2 diabetes (T2DM) is a condition typically caused by insulin resistance. There is a lack of evidence of inositol use in T2DM. We evaluated the effectiveness and safety of myo-inositol and d-chiro-inositol treatment in T2DM. This was a pilot study involving a consecutive sample of patients with T2DM with suboptimal glycemic control (HbA1c 7...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27795706/inositol-treatment-and-art-outcomes-in-women-with-pcos
#14
REVIEW
Deepika Garg, Reshef Tal
Polycystic ovary syndrome (PCOS) affects 5-10% of women in reproductive age and is characterized by oligo/amenorrhea, androgen excess, insulin resistance, and typical polycystic ovarian morphology. It is the most common cause of infertility secondary to ovulatory dysfunction. The underlying etiology is still unknown but is believed to be multifactorial. Insulin-sensitizing compounds such as inositol, a B-complex vitamin, and its stereoisomers (myo-inositol and D-chiro-inositol) have been studied as an effective treatment of PCOS...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27721826/effect-on-insulin-stimulated-release-of-d-chiro-inositol-containing-inositolphosphoglycan-mediator-during-weight-loss-in-obese-women-with-and-without-polycystic-ovary-syndrome
#15
Kai I Cheang, Sakita N Sistrun, Kelley S Morel, John E Nestler
Background. A deficiency of D-chiro-inositol-inositolphosphoglycan mediator (DCI-IPG) may contribute to insulin resistance in polycystic ovary syndrome (PCOS). Whether the relationship between impaired DCI-IPG release and insulin resistance is specific to PCOS rather than obesity is unknown. We assessed insulin-released DCI-IPG and its relationship to insulin sensitivity at baseline and after weight loss in obese women with and without PCOS. Methods. Obese PCOS (n = 16) and normal (n = 15) women underwent 8 weeks of a hypocaloric diet...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27717596/inositol-as-putative-integrative-treatment-for-pcos
#16
REVIEW
Alessandro D Genazzani
Studies over the last decade have demonstrated that some polycystic ovary syndrome (PCOS) patients have abnormal insulin sensitivity (insulin resistance), independently from being overweight or obese. This induces the risk of developing type 2 diabetes in such PCOS patients. The use of insulin sensitizers (i.e. metformin), reduces such metabolic, and most hormonal, impairments. As metformin often induces side effects, new integrative strategies have been proposed to treat insulin resistance, such as the use of inositols...
December 2016: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/27595157/inositol-and-human-reproduction-from-cellular-metabolism-to-clinical-use
#17
REVIEW
Ewa M Milewska, Adam Czyzyk, Blazej Meczekalski, Alessandro D Genazzani
Inositol is an organic compound of high biological importance that is widely distributed in nature. It belongs to the sugar family and is mainly represented by its two dominant stereoisomers: myo-inositol and D-chiro-inositol that are found in the organism in the physiological serum ratio 40:1. Inositol and its derivatives are important components of the structural phospholipids of the cell membranes and are precursors of the second messengers of many metabolic pathways. A high concentration of myoinositol is found in the follicular fluid and in semen...
September 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27579037/metabolism-and-ovarian-function-in-pcos-women-a-therapeutic-approach-with-inositols
#18
REVIEW
Antonio Simone Laganà, Paola Rossetti, Massimo Buscema, Sandro La Vignera, Rosita Angela Condorelli, Giuseppe Gullo, Roberta Granese, Onofrio Triolo
Polycystic ovary syndrome (PCOS) is characterized by chronical anovulation and hyperandrogenism which may be present in a different degree of severity. Insulin-resistance and hyperinsulinemia are the main physiopathological basis of this syndrome and the failure of inositol-mediated signaling may concur to them. Myo (MI) and D-chiro-inositol (DCI), the most studied inositol isoforms, are classified as insulin sensitizers. In form of glycans, DCI-phosphoglycan and MI-phosphoglycan control key enzymes were involved in glucose and lipid metabolism...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27510483/current-insights-into-inositol-isoforms-mediterranean-and-ketogenic-diets-for-polycystic-ovary-syndrome-from-bench-to-bedside
#19
REVIEW
Giovanna Muscogiuri, Stefano Palomba, Antonio Simone Laganà, Francesco Orio
BACKGROUND: Polycystic ovary syndrome (PCOS) is a complex syndrome characterized by reproductive and metabolic implications. Lifestyle changes, such as diet and exercise, are considered first-line treatment for women affected by PCOS. Pharmacologic treatments target the hormonal and metabolic dysregulations associated to the disease such as insulin resistance, anovulation, hirsutism and menstrual irregularities. OBJECTIVE: To focus on the role of inositol isoforms, as well as Mediterranean and ketogenic diets, as possible therapeutic strategies in PCOS women...
2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27493664/a-combined-therapy-with-myo-inositol-and-d-chiro-inositol-improves-endocrine-parameters-and-insulin-resistance-in-pcos-young-overweight-women
#20
Elena Benelli, Scilla Del Ghianda, Caterina Di Cosmo, Massimo Tonacchera
Introduction. We evaluated the effects of a therapy that combines myo-inositol (MI) and D-chiro-inositol (DCI) in young overweight women affected by polycystic ovary syndrome (PCOS), characterized by oligo- or anovulation and hyperandrogenism, correlated to insulin resistance. Methods. We enrolled 46 patients affected by PCOS and, randomly, we assigned them to two groups, A and B, treated, respectively, with the association of MI plus DCI, in a 40 : 1 ratio, or with placebo (folic acid) for six months. Thus, we analyzed pretreatment and posttreatment FSH, LH, 17-beta-Estradiol, Sex Hormone Binding Globulin, androstenedione, free testosterone, dehydroepiandrosterone sulphate, HOMA index, and fasting glucose and insulin...
2016: International Journal of Endocrinology
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