34 research outputs found
Insulin detemir for the treatment of obese patients with type 2 diabetes
The risk for developing type 2 diabetes (T2DM) is greater among obese individuals. Following onset of the disease, patients with T2DM become more likely to be afflicted with diabetic micro- and macrovascular complications. Decreasing body weight has been shown to lower glycosylated hemoglobin and improve other metabolic parameters in patients with T2DM. Medications used to lower blood glucose may increase body weight in patients with T2DM and this has been repeatedly shown to be the case for conventional, human insulin formulations. Insulin detemir is a neutral, soluble, long-acting insulin analog in which threonine-30 of the insulin B-chain is deleted, and the C-terminal lysine is acetylated with myristic acid, a C14 fatty acid chain. Insulin detemir binds to albumin, a property that enhances its pharmacokinetic/pharmacodynamic profile. Results from clinical trials have demonstrated that treatment with insulin detemir is associated with less weight gain than either insulin glargine or neutral protamine Hagedorn insulin. There are many potential reasons for the lower weight gain observed among patients treated with insulin detemir, including lower risk for hypoglycemia and therefore decreased defensive eating due to concern about this adverse event, along with other effects that may be related to the albumin binding of this insulin that may account for lower within-patient variability and consistent action. These might include faster transport across the blood–brain barrier, induction of satiety signaling in the brain, and preferential inhibition of hepatic glucose production versus peripheral glucose uptake. Experiments in diabetic rats have also indicated that insulin detemir increases adiponectin levels, which is associated with both weight loss and decreased eating
Importance of early insulin secretion. Comparison of nateglinide and glyburide in previously diet-treated patients with type 2 diabetes
WSTĘP. Badanie przeprowadzono w celu porównania wpływu nateglinidu, gliburydu
i placebo na poposiłkowe zwyżki glikemii oraz wydzielanie insuliny u chorych na
cukrzycę typu 2 leczonych uprzednio dietą.
MATERIAŁ I METODY. Badanie przeprowadzono metodą podwójnie ślepej próby,
z udziałem grupy kontrolnej. Randomizacją objęto 152 chorych z kilku ośrodków.
Otrzymywali oni przez 8 tygodni nateglinid (120 mg przed posiłkiem 3 razy dziennie,
n = 51) lub gliburyd (5 mg 4 razy dziennie, po 2 tygodniach dawkę zwiększano do
10 mg 4 razy dziennie, n = 50) lub placebo (n = 51). Tydzień przed rozpoczęciem
badania oraz po 8 tygodniach leczenia wykonywano oznaczenie profilu glikemii,
insulinemii oraz stężenia peptydu C po prowokacji w postaci pokarmów płynnych.
Tydzień przed badaniem oraz po 7 tygodniach terapii na podstawie 19 pomiarów określano
dzienny profil glikemii i insulinemii. Chorzy spożywali w ciągu tego okresu 3
posiłki stałe.
WYNIKI. Po spożyciu pokarmów płynnych nateglinid skuteczniej zmniejszał
przyrostowe pole pod krzywą (AUC, area under the curve) dla glukozy niż gliburyd
(D = -4,94 vs. -2,71 mmol • h/l, p < 0,05),
zaś gliburyd skuteczniej niż nateglinid obniżał stężenie glukozy w osoczu na czczo
(D = -2,9 vs. -1,0 mmol/l, p < 0,001). Natomiast
wzrost stężenia peptydu C wywołany przez gliburyd był większy niż w przypadku
nateglinidu (D = +1,83 vs. +0,95 nmol • h/p
< 0,01) i jedynie gliburyd zwiększał stężenie insuliny na czczo. Po prowokacji
w formie pokarmów stałych zarówno nateglinid, jak i gliburyd zapewniały podobną
całkowitą kontrolę glikemii (D 12-h AUC przyrostowe
= -13,2 vs. -15,3 mmol • h/l), lecz AUC dla insuliny w przypadku nateglinidu
było wyraźnie mniejsze niż w przypadku gliburydu (D 12-h
AUC = +866 vs. +1702 pmol • h/l, p = 0,01).
WNIOSKI. Badanie to wykazało, że nateglinid wybiórczo zwiększał wczesne
wydzielanie insuliny i zapewniał lepszą kontrolę glikemii w czasie spożywania
posiłków niż gliburyd, powodując jednocześnie mniejszą całkowitą ekspozycję na
insulinę niż gliburyd.INTRODUCTION. This study compared the effects of
nateglinide, glyburide, and placebo on postmeal glucose
excursions and insulin secretion in previously
diet-treated patients with type 2 diabetes.
RESEARCH DESIGN AND METHODS. This randomized,
double-blind, placebo-controlled multicenter study
was conducted in 152 patients who received either
nateglinide (120 mg before three meals daily,
n = 51), glyburide (5 mg q.d. titrated to 10 mg q.d.
after 2 weeks, n = 50), or placebo (n = 51) for 8 weeks. Glucose, insulin, and C-peptide profiles during
liquid meal challenges were measured at weeks
0 and 8. At weeks — 1 and 7, 19-point daytime
glucose and insulin profiles, comprising three solid
meals, were measured.
RESULTS. During the liquid-meal challenge, nateglinide
reduced the incremental glucose area under the curve
(AUC) more effectively than glyburide (D = –4.94 vs.
–2.71 mmol • h/l, p < 0.05), whereas glyburide reduced
fasting plasma glucose more effectively than nateglinide
(D = –2.9 vs. –1.0 mmol/l, respectively, p <
0.001). In contrast, C-peptide induced by glyburide
was greater than that induced by nateglinide
(D = +1.83 vs. +0.95 nmol • h/l, p < 0.01), and only
glyburide increased fasting insulin levels. During the
solid meal challenges, nateglinide and glyburide elicited
similar overall glucose control (D 12-h incremental
AUC = –13.2 vs. –15.3 mmol • h/l), but the
insulin AUCinduced by nateglinide was significantly
less than that induced by glyburide (D 12-h AUC =
+866 vs. +1,702 pmol • h/l, p = 0.01).
CONCLUSIONS. This study demonstrated that nateglinide
selectively enhanced early insulin release and
provided better mealtime glucose control with less
total insulin exposure than glyburide
Prognostic impact of abdominal lymph node involvement in diffuse large B-cell lymphoma
OBJECTIVE: The prognostic value of site of nodal involvement in diffuse large B-cell lymphomas (DLBCL) is mainly unknown. We aimed to determine the prognostic significance of nodal abdominal involvement in relation to tumour cell markers and clinical characteristics of 249 DLBCL patients in a retrospective single-centre study. METHODS: Contrast-enhanced computed tomography (CT) of the abdomen and thorax revealed pathologically enlarged abdominal lymph nodes in 156 patients, while in 93 patients there were no pathologically enlarged lymph nodes in the abdomen. In 81 cases, the diagnosis of DLBCL was verified by histopathological biopsy obtained from abdominal lymph node. RESULTS: Patients with abdominal nodal disease had inferior lymphoma-specific survival (P = .04) and presented with higher age-adjusted IPI (P < .001), lactate dehydrogenase (P < .001) and more often advanced stage (P < .001), bulky disease (P < .001), B symptoms (P < .001), and double expression of MYC and BCL2 (P = .02) compared to patients without nodal abdominal involvement, but less often extranodal involvement (P < .02). The worst outcome was observed in those where the abdominal nodal involvement was verified by histopathological biopsy. CONCLUSION: Diffuse large B-cell lymphomas patients with abdominal nodal disease had inferior outcome and more aggressive behaviour, reflected both in clinical and biological characteristics
Proteomic analysis of the plasma membrane-movement tubule complex of cowpea mosaic virus
Cowpea mosaic virus forms tubules constructed from the movement protein (MP) in plasmodesmata (PD) to achieve cell-to-cell movement of its virions. Similar tubules, delineated by the plasma membrane (PM), are formed protruding from the surface of infected protoplasts. These PM-tubule complexes were isolated from protoplasts by immunoprecipitation and analysed for their protein content by tandem mass spectrometry to identify host proteins with affinity for the movement tubule. Seven host proteins were abundantly present in the PM-tubule complex, including molecular chaperonins and an AAA protein. Members of both protein families have been implicated in establishment of systemic infection. The potential role of these proteins in tubule-guided cell-cell transport is discussed.</p
Similar Efficacy and Safety of Basaglar® and Lantus® in Patients with Type 2 Diabetes in Age Groups (<65 Years, ≥65 Years): A Post Hoc Analysis from the ELEMENT-2 Study
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