NP MS Workflow: An Open-Source Software System to Empower Natural Product-Based Drug Discovery Using Untargeted Metabolomics.

Natural products (or specialized metabolites) are historically the main source of new drugs. However, the current drug discovery pipelines require miniaturization and speeds that are incompatible with traditional natural product research methods, especially in the early stages of the research. This article introduces the NP MS Workflow, a robust open-source software system for liquid chromatography-tandem mass spectrometry (LC-MS/MS) untargeted metabolomic data processing and analysis, designed to rank bioactive natural products directly from complex mixtures of compounds, such as bioactive biota samples.

Large Cheek Defect Reconstruction With a Rhomboid Flap and Burow's Advancement Flap After Excision of a Basal Cell Carcinoma.

Reconstruction of large surgical defects on the cheek can be challenging for dermatologic surgeons. We describe using a modified rhomboid flap and Burow's advancement flap to close a surgical defect resulting from the excision of a basal cell carcinoma measuring 10×10cm in the buccomandibular area of the cheek.

Modified keystone flap used to repair nose defect after Mohs micrographic surgery.

Mohs micrographic surgery (MMS) is a surgical technique used to remove skin tumors with a complete evaluation of the margins. The keystone flap technique is generally used to repair large surgical defects on limbs. We present a case where a modified keystone flap technique was used to close a large defect after Mohs micrographic surgery in a patient with a basal cell carcinoma on the nose.

Chemical Elicitors Induce Rare Bioactive Secondary Metabolites in Deep-Sea Bacteria under Laboratory Conditions.

Bacterial genome sequencing has revealed a vast number of novel biosynthetic gene clusters (BGC) with potential to produce bioactive natural products. However, the biosynthesis of secondary metabolites by bacteria is often silenced under laboratory conditions, limiting the controlled expression of natural products. Here we describe an integrated methodology for the construction and screening of an elicited and pre-fractionated library of marine bacteria.

Margin Reanalysis With 3-Dimensional Micrographic Surgery Technique of Conventional Excision Specimens With Negative Margin Readings.

Introduction: Mohs micrographic surgery technique allows for complete margin analysis of skin tumors, which explains its lower recurrence rates over conventional surgery. Although it is known that routine processing of excision specimens represents less than 0.5% of the margins, a direct comparison with micrographic technique has not been performed so far.

Tissue-Sparing Outcome of Mohs Micrographic Surgery in Squamous Cell Carcinomas.

Background: Micrographic Mohs Surgery (MMS) offers the highest cure rates and healthy skin tissue sparing effect compared with standard excision.

Objective: To quantify the tissue-sparing properties of MMS in squamous cell carcinoma (SCC) in comparison with standard excision (SE).

Methods: A bidirectional, descriptive study, including 94 cases of SCC, was performed, on patients with histologic diagnosis of SCC (in situ, well differentiated, moderately differentiated, and undifferentiated), that where operated with MMS between 2013 and 2018 at Hospital de Clínicas Dr.

East-West Flap After Mohs Micrographic Surgery.

Repair of distal nasal defects resulting from Mohs micrographic surgery is a challenge, but surgeons can choose from a number of techniques. We present 3 cases in which an east-west flap was used to close the defect. The east-west flap is an easily conceived advancement flap that consists of a superior triangle used to cover the defect and an inferior triangle whose base is located along the advancement line.

The Super Shaving Technique to Correct the Trapdoor Effect in Nasal Flaps.

Introduction And Objectives: The trapdoor effect is a possible complication in flap reconstructions, particularly those involving the face. It consists of a bulging, elevated deformity that appears 3 weeks after the intervention. To date there has been no consensus on how the trapdoor effect should be treated.

Secondary-intention healing following Mohs micrographic surgery for squamous cell carcinoma of a finger.

Mohs micrographic surgery is the best therapeutical option for hand squamous cell carcinoma without bone involvement; however, the reconstruction of the surgical defect could be very difficult if the tumour is located in the distal phalanx of a finger. We present the case of a patient with a squamous cell carcinoma of the distal phalanx of a finger, which was treated with Mohs micrographic surgery, and its surgical defect was successfully resolved by secondary-intention healing using hydrocolloid dressings.

Reconstructive methods in Mohs micrographic surgery in Uruguay: A bidirectional descriptive cohort analysis.

Background And Objectives: The primary goal of Mohs micrographic surgery (MMS) is to completely excise a cancerous lesion and a wide range of reconstructive techniques of varying complexity are used to close the resulting wound. In this study, we performed a descriptive analysis of patients who underwent MMS, with a focus on wound closure methods.

Material And Methods: We conducted a bidirectional descriptive cohort analysis of all MMS procedures performed by a single surgeon between November 2013 and April 2016.

Super U Technique for Ingrown Nails.

Introduction And Objectives: Ingrown nails are a common problem, seen mostly in young adults. Also known as onychcrypotisis, this condition typically affects the great toenail. Four stages have been defined according to the severity and duration of the condition, and treatment varies from conservative to surgical techniques depending on the stage.

Modified keystone flap for extremity defects after Mohs surgery.

Background: When possible, surgery is the treatment of choice for cutaneous carcinomas, as it allows to us perform the anatomopathological study and control the surgical margins. Mohs micrographic surgery (MMS) controls 100% of the margins, maintains a larger amount of healthy tissue, and a fewer number of recurrences are seen. Large limb surgical defects after MMS are a challenge.

Outcome of patients attending a specialist educational and mental health service for social anxiety disorders.

The purpose of this study was to evaluate the outcome of adolescents with anxiety-based school attendance problems enrolled in a specialist adolescent educational and mental health program that provides educational assistance and social skills development, and to suggest key elements that may account for its apparent effectiveness. Young people attending the Sulman Program in Sydney, Australia, between March 2003 and December 2004 were identified. Baseline information was gathered from the medical records, pre and postintervention personal development questionnaires were given to students, and pre and postratings of function were made.

Scintigraphic evaluation of malignant melanoma lesions with Tc-99m tetrofosmin.

Two cases of malignant melanoma (primary and metastatic lesions) imaged with Tc-99m tetrofosmin are reported. One patient showed intense uptake in a primary skin lesion of the thorax, and the other patient had accumulation in skin, cerebellum, breast, and lymph node metastases. Like Tc-99m MIBI, Tc-99m tetrofosmin imaging may be of clinical relevance in the evaluation of suspicious skin lesions and in patients with known cutaneous malignant melanoma in the assessment of recurrent disease during follow-up evaluation.

Detection of recurrent malignant melanoma with 99mTc-MIBI scintigraphy.

Initial reports suggest that 99mTc-methoxyisobutylisonitrile (MIBI) scanning may be of clinical value in staging patients with malignant melanoma. We carried out a study to evaluate the potential of this technique in the detection of recurrent disease. Whole-body 99mTC-MIBI scans were performed in 81 patients with a history of a surgically excised MM: 28 with known recurrent lesions and 53 during follow-up without evidence of disease.

Scintigraphic detection of invasive cutaneous malignant melanoma with Tc-99m MIBI.

Malignant melanoma is a relatively uncommon cancer of increasing incidence. The authors report on two cases of malignant melanoma lesions (primary and lymph node metastasis) imaged with Tc-99m MIBI. One patient revealed intense accumulation of the radiotracer in a primary skin lesion of the thorax, whereas the other patient showed increased Tc-99m MIBI uptake in a lymph node metastasis of the neck.

Effects of physical activity on maternal plasma beta-endorphin levels and perception of labor pain.

Thirty-six women in their second or third pregnancies were studied in two groups (control and exercise) to determine whether plasma alpha-endorphin levels could be elevated by exercise conditioning during pregnancy. Aerobic training was performed on a bicycle ergometer. Both groups were monitored throughout pregnancy by frequent gynecologic examinations.

Conformational studies of two histamine H2-receptor antagonistic phenylformamidines: mifentidine and its guanidinothiazole analogue DA 4643.

Two histamine H2-receptor antagonists of the phenylformamidine type, mifentidine (N-isopropyl-N'-(4-1H-imidazol-4-yl-phenyl) formamidine dihydrochloride; I) and DA 4643 (N-methyl-N'-(3-(2-guanidinothiazol-4-yl)-phenyl) formamidine dihydrochloride; II), have been investigated by experimental physico-chemical studies and theoretical conformational analysis. PKa determinations on the two molecules I and II show that these substances exist at physiological pH (7.4) predominantly as their monoprotonated forms at the formamidine moiety.

(Imidazolylphenyl)formamidines. A structurally novel class of potent histamine H2 receptor antagonists.

Structure-activity considerations of N alpha-guanylhistamine, the first compound found with detectable H2-antagonist activity, led to the synthesis of a series of conformationally rigid guanylhistamine analogues, namely, (imidazolylphenyl)guanidines, imidazolylbenzamidines, and (imidazolylphenyl)formamidines. It was found that in the guanidine and benzamidine classes, the meta-substituted derivatives (3, 4, 7, and 8) possessed H2-antagonist activity, whereas in the class of formamidines, only the para-substituted derivative 10 was found active. A subsequent increase in the size of the substituent at the formamidino group of 10 led to compounds (15-20) of high H2-antagonist affinity, which was related to the gastric antisecretory effect.