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M Vega

Publications and source records attributed to M Vega.

At least 37 records · Page 2Linked to original sources
PubMed2001

Results of salvage surgery for local or regional recurrence after larynx preservation with induction chemotherapy and radiotherapy.

BACKGROUND: After treatment of locally advanced laryngeal carcinomas with induction chemotherapy and radiotherapy, some patients suffer a local or regional failure of the tumor, and salvage surgery is required. The aim of this study was to review the results of such salvage surgery in this group of patients. METHODS: A retrospective study of a cohort of 110 patients diagnosed between 1989 and 1996 with a locally advanced laryngeal carcinoma (T3-T4) treated with induction chemotherapy and radiotherapy was performed. The results of salvage surgery in patients with a local and/or regional failure of the treatment were analyzed. RESULTS: Forty-two patients presented a local and/or a regional recurrence of the tumor: 26 patients in the larynx, eight in the neck, and a further eight in both in the larynx and the neck. Salvage surgery was carried out in 28 patients (67%), consisting of total laryngectomies with neck dissections (24 cases), endoscopic resection of the tumor (one case), and radical neck dissections (three cases). Five-year adjusted survival for the 42 patients was 38%. Five-year survival for the 28 patients treated with salvage surgery was 57%. Five patients had postoperative complications: four had pharyngo-cutaneous fistulas and one had wound infection. CONCLUSIONS: After a local and/or regional recurrence, 67% of patients with advanced laryngeal carcinoma treated with induction chemotherapy and radiotherapy were candidates to salvage surgery. Five-year adjusted survival for this group of patients was 57%.

Cohort Studies↗
PubMed2001

Expression of steroidogenic acute regulatory protein in the human corpus luteum throughout the luteal phase.

The expression of the steroidogenic acute regulatory protein (StAR) in the human corpus luteum (CL) was examined throughout the luteal phase. The primary 1.6-kb StAR transcript was in greater abundance in early (3.1-fold) and mid (2.2-fold) luteal phase CL compared with late luteal phase CL. The larger StAR transcript (4.4 kb) was found in early and midluteal phase CL, but was not detected in late luteal phase specimens. Mature StAR protein (30 kDa) was present in lower amounts within late CL compared with early and midluteal phase CL. The StAR preprotein (37 kDa) was also detected in greater abundance in early and midluteal CL. Immunohistochemistry revealed that StAR staining was most prominent in thecal-lutein cells throughout the luteal phase. The intensity of the signal for StAR exhibited significant changes throughout the luteal phase, being most intense during the midluteal phase and least during the late luteal phase. Plasma progesterone concentrations were highly correlated (r = 0.73 and r = 0.79) with luteal expression of the preprotein and mature StAR isoforms, respectively, throughout the luteal phase. To examine the LH dependency of StAR expression, the GnRH antagonist, Cetrorelix, was administered during the midluteal phase. Cetrorelix caused a decline in serum LH levels within 2 h, which, in turn, caused a pronounced decline in plasma progesterone within 6 h. The StAR 4.4-kb transcript was not detectable, and the 1.6-kb transcript was reduced by approximately 50% within 24 h of Cetrorelix treatment. The mature 30-kDa StAR protein level declined approximately 30% after Cetrorelix treatment. We conclude that 1) StAR mRNA and protein are highly expressed in early and midluteal phase CL; 2) StAR protein is present in both thecal-lutein and granulosa-lutein cells throughout the luteal phase; 3) StAR protein levels in the CL are highly correlated with plasma progesterone levels; 4) declining StAR mRNA and protein levels are characteristic of late luteal phase CL; and 5) suppression of LH levels during the midluteal phase results in a marked decline in plasma progesterone and a diminished abundance of StAR transcripts in the CL without a corresponding significant decline in StAR protein. Collectively, these data are consistent with the idea that StAR gene expression is a key determinant of luteal progesterone during the normal menstrual cycle. However, the pharmacologically induced withdrawal in the midluteal phase of LH support diminishes luteal progesterone output by mechanisms others than reduced StAR protein levels.

Adult↗
PubMed2001

Effect of nitric oxide on the expression of insulin-like growth factors and the insulin-like growth factor binding proteins throughout the lifespan of the human corpus luteum.

The presence of insulin-like growth factors (IGF), IGF binding proteins (IGFBP) and IGF receptor type 1 (IGF-IR) in the human corpus luteum was investigated by examining the expression and production of related proteins throughout the lifespan of the corpus luteum and the action of nitric oxide upon their production. The expression of proteins in corpora lutea from the early, mid-and late luteal phases was assessed by immunohisto-chemistry, evaluated by a semi-quantitative analysis and the functional study was performed in corpus luteum explants incubated with nitric oxide donors. IGF-I and -II and IGFBP-1 and -3 were measured in the culture media by specific immunoassays. The results showed that IGF-I and -II, IGFBP-1 to -6 and IGF-IR were detected in the human corpus luteum throughout the luteal phase. Moreover, the expression and production of IGF-I and IGFBP-1 increased progressively from corpora lutea from the early to late luteal phases (P < 0.05), whereas the expression and production of IGFBP-2, -4 and -5 were significantly higher in corpora lutea from the mid-luteal phase (P < 0.05). No differences were observed in the expression of IGF-II, IGFBP-3 and -6 and IGF-IR throughout the lifespan of the corpus luteum. However, functional studies showed that nitric oxide donors elicited a stimulatory action on production of IGF-I in corpora lutea from the early luteal phase (80%) and on production of IGFBP-1 in corpora lutea from the late luteal phase (50%) (P < 0.05), whereas production of IGF-II and IGFBP-3 was not affected by nitric oxide. In conclusion, the components of the IGF-IGFBP system are expressed in the human corpus luteum throughout its lifespan. Nitric oxide regulates IGF-I and IGFBP-1 production, indicating that the growth factors may serve, at least in part, as mediators of the action of nitric oxide in the human corpus luteum.

Adult↗
PubMed2000

Determination of cadmium by differential pulse adsorptive stripping voltammetry.

A study of the adsorptive stripping voltammetry of cadmium on a mercury drop electrode is reported in which 2-mercapto-5-phenyl-amino-1,3,4-thiadiazole (MPATD), synthesized at home has been used as a chelating agent. The most suitable operating conditions and parameters such as buffer, pH, deposition potential, deposition time, ligand concentration, scan rate and others were selected and the determination of cadmium from aqueous solutions using the standard additions method was possible. As validation criteria, the linearity and range, repeatability of the signal, repeatability of the concentration and accuracy were investigated. A limit of detection of 4.67 x 10(-10) M and a limit of quantification of 1.55 x 10(-9) M were achieved. The interference of other metals and organic substances was studied. Concerning a possible catalytic effect, no one was found. The method was designed in order to determine Cd from biological samples.

Cadmium↗
PubMed2000

Deriving ecological risk-based soil quality values in the Basque Country.

Most industrialised countries are currently drawing up their procedures to deal with contaminated land. In the Basque Country generic soil quality values applicable to different land uses have been drawn up for many common soil inorganic and organic pollutants, to assist in the site assessment process. In this paper we present those values aimed at protecting ecosystems as the main target at risk. Ecological risk was defined on the basis of effects on the structure of the soil invertebrate community. Ecotoxicological data from laboratory tests were used in combination with a theoretical extrapolation method. The following groups of compounds were assayed: heavy metals, cyanides, aromatic compounds, polycyclic aromatic hydrocarbons, HCH isomers, chlorinated organic compounds, and mineral oil. A specific toxicity database was created. The reliability of the values obtained as well as the limitations of the derivation process are discussed.

Animals↗
PubMed2000

How much does it cost to preserve a larynx? An economic study.

Various studies report an increase in costs when induction chemotherapy is included in the treatment of advanced laryngeal cancer, but to our knowledge no studies have yet compared the economic costs of total laryngectomy versus induction chemotherapy in the treatment of advanced laryngeal cancer. We have conducted a retrospective study comparing the costs of treatment and survival in 96 patients with a T3N0-1 glottic carcinoma. Findings showed that the average cost per patient in the group of patients treated by total laryngectomy with or without postoperative radiotherapy was 5,853 Eur, while that for the group of patients who began treatment with induction chemotherapy was 6,452 Eur. The adjusted 5-year survival for patients treated with total laryngectomy with or without postoperative radiotherapy was 80%, and 72% for patients who began treatment with induction chemotherapy. Sixteen of the 35 patients (46%) receiving induction chemotherapy were spared laryngectomy. The use of induction chemotherapy in the treatment of patients with advanced laryngeal carcinomas involved an increase in cost of 600 Eur in relation to treatment with total laryngectomy and postoperative radiotherapy. However, from an economic point of view, we consider induction chemotherapy to be an important consideration in an organ-preservation strategy.

Carcinoma↗
PubMed2000

Initial treatment of the early stages (I, II) of supraglottic squamous cell carcinoma: partial laryngectomy versus radiotherapy.

The purpose of this study was to define the treatment of choice (partial laryngectomy vs radiotherapy) in the early stage of supraglottic squamous cell cancer (ESSC). One hundred and fifteen patients with ESSC were treated with either partial laryngectomy (25 patients) or with radiotherapy(90 patients) between January 1984 and December 1996. All patients had a follow-up of over 29 months. Radiotherapy (RT) had a local control rate of 79%, which increased to 90% with salvage surgery, and a high larynx preservation rate (83%). Partial laryngectomy (PL) offered a better initial local control rate of 84%, which increased to 88% with salvage surgery, and functional results were also good (80%). No statistically significant differences were found between RT and PL. RT was less costly, showed better suitability for treatment, produced moderate morbidity and sequelae, and local recurrence was easier to rescue. However, it is a once-only application technique. PL showed higher immediate postoperative morbidity, higher cost and lower suitability for treatment but had fewer sequelae, offered the best initial local control and is multi-applicable. No clear oncological arguments were found in our series to define whether PL or RT is the treatment of choice for ESSC. Both are effective therapies. Secondary factors such as suitability for treatment, morbidity, cost and applicability should be individually evaluated when choosing the type of treatment. As the laser endoscopic approach decreases morbidity and costs and makes the condition more suitable for treatment, it could be the treatment of choice for ESSC, in cases where local tumoral extent and larynx exposure allow radical excision.

Aged↗
PubMed2000

High throughput production, screening and analysis of adeno-associated viral vectors.

Recombinant adeno-associated viruses (rAAV) are promising candidates as gene vectors, as they transduce non-dividing cells and permit lasting transgene expression in a wide spectrum of tissues. In this paper, we describe a robust procedure for the high throughput production, screening and characterization of rAAV vectors. The technology includes the production of rAAV from rapid small scale plasmid preparations and the analysis of virus productivity (physical and infectious particles) and activity (transgene expression, replication). rAAV are produced by triple transfection (rAAV plasmid and AAV- and adenovirus (Ad)-helper plasmids) on 293 human embryo kidney (HEK) cells. The titers of physical and infectious particles are obtained by dot blot hybridization and by a serial dilution assay, followed by either dot blot hybridization or real-time PCR, respectively. rAAV can be produced and characterized from plasmid mixtures containing as little as 1/100 productive molecules. Experiments on rAAV replication kinetics and Ad helper functions are discussed. All steps are performed in 96-well microtiter plates. The process is reproducible, high throughput, linear and ready for automation.

Cell Line↗
PubMed2000

Nitric oxide induces apoptosis in the human corpus luteum in vitro.

The present study aimed to investigate the role of nitric oxide (NO) in regression of the human corpus luteum. We therefore examined the effect of both NO and human chorionic gonadotrophin (HCG) on luteal cell apoptosis, and Bcl-2 production. The effect of NO on oestrogen production during corpus luteum regression was also studied. Slices from corpus luteum collected throughout the luteal phase were incubated for 4 h with the nitric oxide synthase (NOS) substrate, L-arginine (L-Arg, 1 mmol/l), the NOS inhibitor N-monomethyl-L-arginine (L-NMMA) (1 mmol/l), or with HCG (10 IU/ml). Oestradiol concentrations were determined by radioimmunoassay; Bcl-2 concentrations were measured by enzyme-linked immunosorbent assay; apoptosis was detected in-situ by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling; and inducible nitric oxide synthase (iNOS) was assessed by immunohistochemistry. Consistent with our previous findings, L-Arg elicited an inhibitory action on the production of oestradiol (P< 0.05). The number of apoptotic cells increased (P<0.05) from early to late corpus luteum, as did the number of cells positive for the expression of iNOS. The percentage of apoptotic cells in mid and late luteal phase was increased by L-Arg (56% and 310% respectively; P <0.05), and decreased by L-NMMA and HCG. Although no changes were observed in Bcl-2 concentration during the corpus luteum life span, L-Arg inhibited, and HCG augmented, Bcl-2 production (P<0.05) from mid and late corpus luteum cells in vitro. In summary, these results suggest that the opposite actions of L-Arg and HCG on human corpus luteum viability may, in part, be mediated by changes in the level of the anti-apoptotic activities caused by oestradiol and Bcl-2 protein.

Adult↗
PubMed2000

Endocrine and paracrine-autocrine regulation of the human corpus luteum during the mid-luteal phase.

Human corpora lutea undergo an extremely rapid period of growth, development and regression during the course of non-fertile cycles. The tissue consists of steroidogenic (parenchymal) and non-steroidogenic (stromal) cells. In women and other primates, steroid hormone production by corpora lutea depends on the presence of pituitary-derived LH. Nevertheless, there is also intra-luteal regulation of steroid synthesis. Steroidogenic luteal cells and non-steroidogenic cells interact via endocrine and paracrine pathways, and by contact-dependent pathways (gap junctions). Thus, hormones and locally produced factors including steroids, growth factors, cytokines, reactive oxygen species and nitric oxide may modulate luteal lifespan. The factors regulating regression and rescue of the corpus luteum are not understood completely. This review describes the expression of two representative intragonadal peptides that may influence luteal regression (interleukin 1 beta) and luteal rescue (steroidogenic acute regulatory protein).

Animals↗
PubMed2000

[Evaluation of commercial UHT milk and optimization of industrial process].

From the nutrition al point of view milk is one of the most complete food in the diet of mammals. It contains nearly all the nutrients necessary to sustain life, but milk can deteriorate very easily, either by microbiological contamination or by biochemical reactions during processing and/or storage. The objective of this research study was to design a modified UHT treatment to achieve commercial sterilization and maximize the stabilization of the heat-treated product during storage. To search for a modified UHT process, a mathematical model coupled with an optimization routine (complex method) was developed. The mathematical model considers Kinetics for the inactivation of Bacillus stearothermophilus and several quality factors. To attain the objective function, several commercial UHT milk were analyzed and for the computer search the minimization of hydroxy methyl furfural (HMF) formation was considered and also including constraints for protease and lipase inactivation. The complex optimization procedure was implemented to search for the optimum modified UHT treatment.. One of the optimum modified UHT treatments was the combination of two pre-treatment (3.16 minutes at 62.30 degrees C and 6 minutes at 75 degrees C) in addition with a UHT treatment (0.75 s at 148.8 degrees C). This treatment attains the maximum product stability with a negligible effect on composition and color formation in the treated milk (HMF formation less than 3 mg/mL).

Animals↗
PubMed1999

A quantitative evaluation of alpha1, alpha4, alphaV and beta3 endometrial integrins of fertile and unexplained infertile women during the menstrual cycle. A flow cytometric appraisal.

The expression of integrin molecules alpha1beta1, alpha4beta1 and alphaVbeta3 within endometrial tissue has been proposed as a marker of uterine receptivity during the implantation window. The present investigation examines by flow cytometric analysis the concentrations of alpha1, alpha4, alphaV and beta3 integrin subunits in endometrial stromal (ESC) and epithelial cells (EEC) in two groups of women throughout the menstrual cycle: normal fertile women (n = 27) and women with unexplained infertility (n = 26). Integrin concentrations in endometrial cells were calculated in relative fluorescence units against a negative cellular control. The assessment of integrin subunits detected the protein in ESC and EEC from the late proliferative to the late secretory phase. In both groups of women, the alpha1 was the highest integrin expressed in ESC and EEC throughout the menstrual cycle. All women exhibited low concentrations of alpha4-EEC at the time of the implantation window. Infertile women expressed lower concentrations of the alpha4-ESC during the proliferative and early secretory phase while lower concentrations of the alpha1-ESC were seen during the late secretory phase. Interestingly, the infertile women expressed lower concentrations of beta3-EEC in the early, mid-secretory and late secretory phases (P < 0.05). Infertile women also expressed lower concentrations of alpha1-EEC and alphaV-EEC during the late secretory phase (P < 0.05). It can be concluded that the quantitative determination of beta3-EEC by flow cytometry confirmed its potential feature as a marker of endometrial receptivity at the time of the implantation window. In addition, the defective expression of the alpha1-ESC found in the late secretory phase might be associated with the poor fertility outcome of women with unexplained infertility.

Adult↗
PubMed1999

Interleukin-1beta (IL-1beta) is a modulator of human luteal cell steroidogenesis: localization of the IL type I system in the corpus luteum.

The present investigation examined the effect of interleukin-1beta (IL-1beta) on progesterone production by human luteal cells and the expression and localization of the IL-1 system in the human corpus luteum (CL). Luteal cells were isolated from corpora lutea collected throughout the luteal phase. After dispersion, luteal cells were treated with a panel of monoclonal antibodies directed to leukocyte-specific molecules. The leukocytes were isolated with immunomagnetic beads. Leukocyte-free luteal cells exhibited greater steroidogenic responsiveness to hCG toward the end of the luteal phase. The treatment of mixed luteal cells (total luteal cells) with IL-1beta inhibited by 60% hCG-stimulated progesterone production. Interestingly, the treatment of leukocyte-free luteal cells with IL-1beta did not affect progesterone production. In addition, the treatment of mixed luteal cells with monoclonal antibodies against IL-1 receptor type I (IL-1RtI) resulted in a 2.5-fold increase in the hCG-supported progesterone production. IL-1RtI and IL-1 receptor antagonist were localized by immunohistochemistry in both somatic and immune cells of the CL. Flow cytometric analysis indicated that both nonleukocyte luteal cells and leukocyte-luteal cells exhibited IL-1Rt-I positive cells, representing 56% and 31% of the total luteal cells, respectively. However, 13% of nonleukocyte luteal cells did not express IL-1Rt-I. Northern analysis demonstrated the presence of the 5.1-kb IL-1RtI messenger ribonucleic acid transcript in CL of different ages. RT-PCR indicated that both leukocyte-free luteal cells and luteal leukocytes express IL-1RtI messenger ribonucleic acid. We conclude that 1) luteal leukocytes have an inhibitory effect on hCG-stimulated progesterone production; 2) IL-1beta inhibits hCG-stimulated progesterone production only in mixed luteal cell cultures, indicating that leukocytes mediate the effect; 3) the somatic and immune cells of the CL are sites of action and expression of the IL-1 system; and 4) interaction between the steroidogenic and immune cells of the CL suggests a functional intraovarian role for IL-1beta in CL physiology.

Adult↗
PubMed1999

Antisteroidogenic action of nitric oxide on human corpus luteum in vitro: mechanism of action.

To analyze the mechanism by which nitric oxide (NO) exerts its antisteroidogenic action, human luteal cells were cultured during 24 and 48 h with L-arginine (L-Arg, 1 mmol/L); 1,2(2-trifluoromethylphenyl)imidazole (TRIM) (50 micromol/L and 1 mmol/L) and cyclic guanosine monophosphate (cGMP) analog (8-Br-cGMP, 1 mmol/L). Estradiol, nitrite, and P450 AROM activity were determined in culture media. Total cGMP concentration was evaluated in the cells and culture media by radioimmunoassay, and NADPH diaphorase was used as a histochemical marker for NO synthase (NOS) activity. During the corpus luteum (CL) life-span, NO affected estradiol secretion in an age-dependent manner, with an inhibition in mid-CL (37%; p < 0.05) in agreement with our previous results, and no significant modification in early and late CL. Basal nitrite concentration in 24 and 48 h of midluteal cell cultures (42 and 93 pmol/10(6) cells, respectively) was increased by L-Arg (53% and 88%) and inhibited by the two TRIM concentrations; also, an intense diaphorase reactivity was observed in endothelial cells and luteal parenchyma. Total cGMP was not detected in cell cultures and 8-Br-cGMP did not modify estradiol secretion, whereas aromatase activity was strongly inhibited by L-Arg (70%, p < .05). These results suggest that both NOS isoforms are active in midluteal cells, and the mechanism of action for NO on in vitro estradiol secretion may be an inhibition of P450 AROM activity.

Adult↗
PubMed1998

Role of transesophageal echocardiography in the assessment of patients with blunt chest trauma: correlation of echocardiographic findings with the electrocardiogram and creatine kinase monoclonal antibody measurements.

OBJECTIVES: This study was designed to evaluate the usefulness of transesophogeal echocardiography (TEE) for detecting cardiac damage after blunt chest trauma (BCT). BACKGROUND: Multiple methods have been used to detect cardiac damage after a BCT, but none has been demonstrated to be sensitive, specific, and feasible enough. METHODS: This multicenter prospective trial was designed to evaluate the usefulness of TEE in the assessment of patients with BCT and to compare the TEE findings with those provided by the electrocardiogram (ECG) and cardiac isoenzymes assay. One hundred seventeen consecutive patients with a significant BCT were enrolled. A TEE was performed in each patient. Serial ECGs and plasma profiles of creatine kinase (CK) and CK-monoclonal antibody (MB) were obtained. RESULTS: Sixty-six (56%) patients had pathologic findings in the TEE attributed to the BCT (group A). In the remaining 51 (44%) patients the TEE was normal (group B). An abnormal ECG was more frequent in group A (59% vs 24%; p < 0.001), and the serum CK-MB peak level was also higher in group A (174 +/- 30 U/L vs 93 +/- 21 U/L; p = 0.05). Relative to pathologic TEE findings, the sensitivity and specificity of an abnormal ECG were 59% and 73% and of high CK-MB with CK-MB/CK > 5% were 64% and 52%, respectively. CONCLUSIONS: We conclude that TEE can be routinely and safely performed for diagnosing cardiac injuries after a BCT and plays an important role in the evaluation and treatment of these patients. EGG and CK-MB assay are not good methods for detecting cardiac damage in this setting.

Adolescent↗
PubMed1998

Presence of angiotensin II and expression of angiotensin II type-2 receptor in human fallopian tube.

OBJECTIVE: To determine the presence of angiotensin II and angiotensin II type-2 receptor subtype messenger RNA (mRNA) in human fallopian tube. DESIGN: Frozen fallopian tubes were used for all studies. SETTING: Procedures were performed at the Institute of Maternal and Child Research, School of Medicine, University of Chile and San Borja-Arriarán Clinical Hospital, National Health Service, Santiago, Chile. PATIENT(S): Eight patients (30-38 years) undergoing surgical sterilization or hysterectomy for benign gynecologic conditions. INTERVENTION(S): Surgery was scheduled in the proliferative or secretory stage of the menstrual cycle. MAIN OUTCOME MEASURE(S): Localization of angiotensin II by immunofluorescence studies, expression of angiotensin II type-2 receptor mRNA, and concentrations of angiotensin II receptor subtypes and binding characteristics. RESULT(S): Angiotensin II was immunolocalized mainly in blood vessel endothelium and, to a lesser extent, in stromal cells. Both binding and angiotensin II type-2 receptor mRNA were detected at high levels. No differences were seen in receptor concentration, dissociation constants or median inhibitory concentration in fallopian tubes ipsilateral or contralateral to the corpus luteum. CONCLUSION(S): Angiotensin II and angiotensin II receptor are present in human fallopian tube. Angiotensin II type-2 receptor was the main receptor subtype. These results suggest that the renin-angiotensin system may play a regulatory role in functions of the fallopian tube.

Adult↗
PubMed1998

Modelling a 3D structure for EgDf1 from Echinococcus granulosus: putative epitopes, phosphorylation motifs and ligand.

EgDf1 is a developmentally regulated protein from the parasite Echinococcus granulosus related to a family of hydrophobic ligand binding proteins. This protein could play a crucial role during the parasite life cycle development since this organism is unable to synthetize most of their own lipids de novo. Furthermore, it has been shown that two related protein from other parasitic platyhelminths (Fh15 from Fasciola hepatica and Sm14 from Schistosoma mansoni) are able to confer protective inmunity against experimental infection in animal models. A three-dimensional structure would help establishing structure/function relationships on a knowledge based manner. 3D structures for EgDf1 protein were modelled by using myelin P2 (mP2) and intestine fatty acid binding protein (I-FABP) as templates. Molecular dynamics techniques were used to validate the models. Template mP2 yielded the best 3D structure for EgDf1. Palmitic and oleic acids were docked inside EgDf1. The present theoretical results suggest definite location in the secondary structure of the epitopic regions, consensus phosphorylation motifs and oleic acid as a good ligand candidate to EgDf1. This protein might well be involved in the process of supplying hydrophobic metabolites for membrane biosynthesis and for signaling pathways.

Amino Acid Sequence↗