Disease relevance of Rectus Abdominis

• Low-dose heparin. A cause of hematoma of rectus abdominis [1].
• DMAnTX was only weakly effective in eliciting contracture of the frog rectus abdominis and was orders of magnitude less potent than AnTX [2].
• A retrospective review of 66 consecutive, large, midline hernia repairs using a separation of parts technique was undertaken to identify any correlation between the preservation of periumbilical rectus abdominis perforators to the skin flaps and the prevalence of postoperative wound complications [3].
• The authors studied the venous drainage of the abdominal wall and its application to the transverse rectus abdominis musculocutaneous flap on 12 cadavers by injecting methylene blue and methyl methacrylate to follow the venous pathways [4].
• Anesthetized Yorkshire pigs underwent 6 h of rectus abdominis myocutaneous flap ischemia or sham ischemia, and LTB4 generation was measured in calcium ionophore-stimulated neutrophils isolated from the circulation [5].

High impact information on Rectus Abdominis

• However, GlcN6P concentrations increased 500- and 700-fold in glucosamine-infused animals in rectus abdominis (590+/-80 vs. 1.2+/-0.1 micromol/kg wet wt, P<0.001) and heart (7,703+/-993 vs. 11.2+/-2.3 micromol/kg wet wt, P<0.001) [6].
• The GlcN6P concentrations in the heart and rectus abdominis muscle reach levels sufficient to cause allosteric activation of glycogen synthase and inhibition of hexokinase [6].
• Despite inducing severe whole-body insulin resistance and decrease in glycogen synthase fractional activity in rectus abdominis muscle (69+/-3 vs. 83+/-1%, P<0.01) and heart (7+/-1 vs. 32+/-4%, P<0.001), glucosamine did not change the glycogen content in rectus and even increased it in the heart (209+/-13 vs. 117+/-9 mmol/kg dry wt, P<0.001) [6].
• The rates of 2-deoxyglucose uptake were determined from the accumulation of 2-[1-14C]deoxyglucose-6-phosphate and 2-[1-14C]deoxyglucose-6-phosphate combined with the rate of the incorporation of 2-[1-14C]deoxyglucose into glycogen in rectus abdominis muscle and the heart [7].
• The rate of 2-deoxyglucose uptake was 29% underestimated in rectus abdominis muscle, when counts found in glycogen were not included in glucose uptake calculations (398 +/- 25 vs. 564 +/- 25 micromol x kg(-1) x min(-1), P < 0.001) [7].

Chemical compound and disease context of Rectus Abdominis

• By contrast, contracture of the rectus abdominis produced by carbachol was partially inhibited by either atropine or d-tubocurarine [8].
• The influence of varying concentrations of the H2-receptor antagonists nizatidine and ranitidine on the acetylcholine- and carbachol-induced contractures on the toad rectus abdominis muscle, as well as the possible interaction between the above H2-receptor antagonists and D-tubocurarine were studied [9].
• Imipramine (2-10 microng/ml) noncompetitively inhibited acetylcholine responses of the frog rectus abdominis muscle, and markedly inhibited the contracture produced by carbachol and succinylcholine without affecting the contracture produced by KCl, caffeine, and chlorpromazine [10].
• Differential blockade of potassium and carbachol contractures of toad isolated rectus abdominis muscle by calcium entry blockers, ketamine and hydrallazine [11].

Biological context of Rectus Abdominis

• This level of tissue induction was raised several-fold by the simultaneous addition of comparatively low doses of TGF-beta1 (0.5, 1.5, and 5 microg), which by itself induces bone formation in the rectus abdominis at doses of 5 microg/100 mg of carrier matrix [12].
• Magnetic stimulation was applied to the vertex and the T12 and S1 spinous processes for transcortical, thoracic, and sacral stimulation, respectively, and compound muscle action potentials were recorded simultaneously from the rectus abdominis (RA) and the right and left abductor hallucis (AH) muscles using three channels [13].
• Plasma concentrations of endothelin-1, skin-forearm temperature gradient (Tgrad), rectal temperature, mean arterial pressure (MAP) and heart rate (HR) were measured at nine predetermined times before, during and after operation in nine women undergoing breast reconstruction with a pedicled transverse rectus abdominis musculocutaneous flap [14].
• SETTING: Laboratory. INTERVENTIONS: We evaluated the ability of platelet-derived growth factor (PDGF) B and fibroblast growth factor 2 plasmid DNA, formulated in a type I collagen matrix, to promote tissue survival in a rat transverse rectus abdominis muscle flap model based on the inferior deep epigastric vascular supply [15].
• Heat production in the rectus abdominis muscle, measured by direct microcalorimetry, was significantly lower after metoprolol [16].

Anatomical context of Rectus Abdominis

• To address this issue, we performed percutaneous biopsies of the vastus lateralis in lean and obese control subjects and in obese patients with IGT and NIDDM and open biopsies of the rectus abdominis at cesarian section in lean and obese gravidas and gravidas with GDM [17].
• METHODS: Fetal small bowel from either BALB/c (H-2d) or C3H/He (H-2k) mice was transplanted into the space between the peritoneum and rectus abdominis of adult C3H/He recipient mice [18].
• The cholinergic potency of the four isomers was evaluated in vitro on guinea pig ileum and frog rectus abdominis models, and the results show that (-)-1, which has the same absolute configuration as L-(+)-muscarine, is a selective and potent muscarinic agent [19].
• Dequalinium was also examined for its actions at nicotinic receptors in skeletal muscle and was found to be a potent, non-competitive antagonist of carbachol contractions of the frog rectus abdominis [20].
• Citrate synthase (CS) activity was used as an index of oxidative capacity, and was determined in the following muscles: soleus, plantaris, costal diaphragm, crural diaphragm, and in all four abdominal muscles: rectus abdominis, transversus abdominis, external oblique, and internal oblique [21].

Associations of Rectus Abdominis with chemical compounds

• The fraction of [3-3H]glucose incorporated into glycogen of total glucose metabolism (calculated from 2-deoxyglucose conversion to 2-deoxyglucose-6-phosphate and glycogen) was 0.6 (337/564) in rectus abdominis muscle and 0.037 (72/1,926) in the heart [7].
• Glucosamine increased tissue concentrations of UDP-GlcNAc 4.4- and 4.6-fold in rectus abdominis and heart, respectively [6].
• BM 130 was a weak agonist at nicotinic receptors of the frog rectus abdominis muscle, whereas BM 123 was almost inactive [22].
• Fw translations resulted predominantly in an activation of the neck flexor, the rectus abdominis and rectus femoris muscle, while the neck-, thoracal- and lumbar extensor muscles (NE, TE, LE) and the hamstrings (Ham) showed varying amounts of inhibition [23].
• 3 The immune sera antagonized the responses elicited by acetylcholine on the frog rectus abdominis [24].

Gene context of Rectus Abdominis

• A single application of OP-1, in conjunction with an insoluble collagenous matrix as carrier (5, 25, and 125 microg/100 mg of carrier matrix) induced bone differentiation in the rectus abdominis of the baboon [12].
• Immunohistochemical analysis of bFGF, TGF-beta1 and catalase in rectus abdominis muscle from cattle foetuses at 180 and 260 days post-conception [25].
• The motor blockade of the rectus abdominis muscles was assessed quantitatively by rectified integrated electromyographic recordings (RIEMG) and as number of turns in EMG recordings [changes in the direction (rise/fall) of the EMG; TURNS] from three different segmental levels, T7, T9 and T11 [26].
• In rectus abdominis, GLUT4 content was similar in the lean, obese, and GDM gravidas whether normalized per milligram membrane protein (relative levels were 1.0 +/- 0.2, 1.3 +/- 0.1, and 1.0 +/- 0.2, respectively) or per wet weight, total protein, and DNA [17].
• We studied NOS2 expression (mRNA and protein) and activity and its role in contractile function in samples from rectus abdominis muscle obtained during surgical procedure in 16 septic patients and in 21 controls [27].

Analytical, diagnostic and therapeutic context of Rectus Abdominis

• The second stage consisted of mobilization of an inferiorly based myocutaneous rectus abdominis pedicle flap for wound closure, followed by an L-5 laminectomy, bilateral L-5 foraminotomy, ligation of the thecal sac, division of sacral nerve roots, and transection of the ilia lateral to the tumor and sacroiliac joints [28].
• Acetylcholine bioassay with thin strip of frog rectus abdominis muscle [29].
• In this series of experiments, we surveyed xanthine oxidase activity after microvascular transfer in the venous effluent after reperfusion of human rectus abdominis muscle (n = 8) and jejunum (n = 4) [30].

References