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Introduction The main feature of body dysmorphic disorder (BDD) is impairing preoccupation with a physical defect that appears slight or non-existent to others. Objectives To draw an overview of BDD through a clinical case of a patient with BDD and autolytic ideation, which improved after an adequate diagnosis and an early pharmacological and psychotherapeutic approach. Methods Bibliographic review of the treatment and diagnosis of BDD, from articles published in the last 5 years in Pubmed. Results 18-year-old woman diagnosed with depression and obsessive ideation, which started at the age of 11, after a comment at school. The patient believes that she has intenseunder-eye bags or dark circles, this has caused her to abandon all activity and self-isolate at home. Symptoms included recurring obsessive and intruding thoughts related to the supposed defect, ritualized behaviors of hours of duration aiming toit through makeup, and autolytic ideation. Therapeutic approach combined psychopharmacological and psychotherapeutic treatments, obtaining gradual improvement of symptomatology and disappearance of the autolytic ideation. Conclusions The disorder is severe, which is reflected in high rates of suicide attempts. Differential diagnosis between obsessive and delirious dysmorphophobia is essential for improving outcomes; the egodystonic nature of the symptom, awareness of illness and obsessive personality traits facilitate the diagnosis. A multidisciplinary approach involving psychiatrists and clinical psychologists is necessary for a correct diagnosis and early treatment of this pathology, as well as recognition by dermatologists, surgeons and medical aesthetic professionals, where these patients go with the aim of finding solutions to their problem. Disclosure No significant relationships.

Introduction Cognitive depressive disorder (or depressive pseudodementia) is a condition defined by functional impairment, similar to dementias or other neurodegenerative disorders, in the context of psychiatric patients. It is important to consider a differential diagnosis in patients with cognitive impairment. Objectives Presentation of a clinical case of a patient with depression with psychotic symptoms who presents cognitive impairment. Methods Bibliographic review of the differential diagnosis between cognitive depressive disorder and real dementia by searching for articles in PubMed. Results We present a 51-year-old woman, previously diagnosed with adjustment disorder (with mixed anxiety and depressed mood) and unspecific anxiety disorder, who was admitted to the hospital due to delusional ideation of harm and Capgras syndrome, ensuring that her relatives had been replaced and the rest of the patients were not real patients, but actors who conspired against her. The MRI (Magnetic Resonance Imaging) was strictly normal (tumors or acute injuries as stroke or hemorrhage were discarded), and a MoCA (Montreal Cognitive Assesment) test was performed to screen any cognitive impairments (obtaining a score of 19/30, with language fluency and abstraction particularly affected). It would be convenient to repeat the test when this episode and the psychotic symptoms are resolved or improved. Conclusions 1. Some patients may have cognitive impairment in the context of a mood disorder. 2. A differential diagnosis and follow-up of these patients should be performed to assess prognosis, reversibility and treatment. 3. Depressive cognitive impairment may precede the development and establishment of a dementia or neurodegenerative picture. Disclosure No significant relationships.

Introduction APA describes Gender dysphoria (GD) as the conflict between a person’s physical or assigned gender and the gender with which he/she/they identify. Recently DSM-V renamed gender identity disorder as “gender dysphoria”. This change in terminology removes the ‘pathology’ from being transgender, which is not a mental health condition. Objectives To systematically summarise available evidence in this important but less researched field. Methods A comprehensive review was carried using the PubMed/ Medline database. Results Formal epidemiological studies of gender dysphoria in children and adolescents have not been conducted. The true prevalence os gender dysphoria is unknown around the world because of the varying definitions, different cultural norms and lack of data. Individuals who identify as transgender are vulnerable, and have higher rates of psychiatric comorbility compared with the general population. Gender dysphoria, gender identity disorder or transsexualism is a psychological condition that requires care and multiple health professionals. Conclusions The natural history of gender identity for children who express gender nonconforming or transgender identities is an area of active research. In addition, there is a lack of guidelines to approach these patients.

Introduction Charles Bonnet syndrome (CBS) is characterized by the presence of visual hallucinations, generally complex, which occurs in patients with alterations in the visual pathway. The majority of affected patients are elderly. It appears in 15% of people with visual loss, predominantly in the 80-year-old female gender. Objectives To present a clinical case of a patient with visual hallucinations and a possible diagnosis of Charles Bonnet syndrome. Highlight the importance of an adequate differential diagnosis. Methods Bibliographic review of the treatment and diagnosis of CBS, from articles published in the last 5 years in Pubmed. Results Woman, 80 years old. No ophthalmological history except those associated with advanced age. She goes to the emergency room due to the presence of visual hallucinosis, in the form of “television presenters” of whom she makes partial criticism, being aware most of the time of their unreality. Hallucinations are not accompanied by anxiety or significant affective repercussions. Discarded delirium, intoxication by substances or drugs that cause the condition. Currently under follow-up to rule out other causes. Conclusions The diagnosis of SCB requires a multidisciplinary approach between neurologists, psychiatrists and ophthalmologists in order to avoid erroneous diagnoses. The differential diagnosis should be made with pathologies such as Lewy body dementia, Parkinson’s disease, delirium, substance intoxication, migraine aura, and metabolic encephalopathy, among others. It is important to involve the family in the treatment of the syndrome to reinforce the recognition of the unreality of these hallucinations in the patients. Antipsychotic treatment can be effective only if the condition is extremely distressing.

Introduction The bipolar disorder is characterized by instability mood. It normally happens in the middle-aged. In elderly patients with a first manic episode, you have to dismiss organic pathology. Objectives To present an elderly patient with a first manic episode Methods A descriptive study of a clinical case and literature review Results A 67-year-old man, married. Consulted Mental Health 5 years ago, about low mood after his early retirement. With no psychiatric treatment. Somatic antecedents: Acute myocardial infarction, hypertension and dyslipidemia. Came to the hospital accompanied by his son-in-law presenting rapid speech and thinking, bright clothing, risky behaviour, irritability, grandiosity deliration ideas and less sleep; being necessary a hospital admission. Blood and urine analysis: with no abnormalities. No toxics in the urine. Asenapine 20mg and Lorazepam 3mg were prescribed with clinical improvement. Brain CT: with no abnormalities. After that, Lithium 400mg per day was prescribed to avoid the induction of depression. Clinical judgement: manic episode. Bipolar disorder Type I Conclusions After dismissing somatic causes, the symptomatic treatment of a manic episode in older patients is on the same lines as the treatment for mania in young adults. 8-10% of psychiatric inpatients over age 55-60 years are diagnosed with bipolar disorder. Since there is an increase in the number of individuals living longer, an expected increase in the number of older adults who will be diagnosed with bipolar disorder. Older adults with bipolar disorder will increase in absolute numbers as well as the proportion of the general populations. Disclosure No significant relationships.

Introduction Mental retardation (RM) is defined as by a deficient intellectual capacity as well as by alterations of the adaptive capacity that are externalized in two or more functional areas (Personal autonomy, Communication, Orientation in the environment, Work and Free time). Objectives Present a patient with a severe behavioural disturbance with an associated intellectual deficit, who remained hospitalized for 2 months and after observing an oral alteration her symptoms improved. Methods A descriptive study of a clinical case Results 54-year-old woman, single. You have a moderate intellectual disability. In January 2019, she began mental health consultations with a diagnosis of adjustment disorder, on treatment with aripiprazole 5 mg/day, mirtazapine 15 mg/day, lorazepam 0.5 mg/day and dipotassium clorazepate 10 mg/day. Went to the emergency room with mutism, hyporesponsiveness and refuse to intake, having lost 25 kg in 6 months. Abdominal and thoracic CT and upper gastrointestinal endoscopy without significant findings. Consultation with otorhinolaryngology, dermatology, traumatology without significant findings. Odontostomatology consultation: Deep cavities are observed, so it is necessary to carry out extractions of the pieces in poor condition. After this intervention, the patient returns to accept oral intake. Conclusions People with intellectual disabilities have a wide range of medical problems that in many cases are directly associated with the underlying disease or syndrome and, in others, with poor physical health due to problems in basic self-care skills or the ability to express verbally. Usually, the first manifestation of pain is an alteration in behaviour, which must be taken into account when making a differential diagnosis. Disclosure No significant relationships.

Introduction Diagnostic overshadowing is one of the main consequences of stigma involving patients diagnosed with a psychiatric disorder. Some studies show that in emergency departments, being diagnosed with a psychiatric illness can lead to a poor evaluation of organic symptoms, delaying the diagnosis and putting the patient’s life at risk. Objectives - To present the case of a patient diagnosed with factitious disorder who was misdiagnosed after attending the emergency department due to the stigma related to his psychiatric diagnosis. - To provide a reflection on stigma in mental health. Methods We will present a case report and a literature review. Results We report a case of a 57-year-old man diagnosed with a factitious disorder. He attended the emergency department of our tertiary care center with confused speech, desorientation and disruptive behavior at home. Although the clinical picture was compatible with a confusional state, he was ordered to be admitted to the psychiatric service. No blood test was previously requested. Three hours after being admitted, he suffered an episode of seizures. A blood test was requested and severe hypomagnesemia (0.2 mg / dl) was found. Because of this episode the patient was admitted to the Intensive Care Unit for three days. Conclusions Factitious disorder is a serious mental disorder with a significant stigmatizing burden. Giving a patient this diagnostic label should be the subject of careful thought in order to protect him from future diagnostic neglect. Disclosure No significant relationships.

Introduction Capgras syndrome, where patients have the conviction that one or more close people have been replaced by a “double,” is the most prevalent delusional misidentification syndrome. It appears in psychiatric illness and organic brain damage. It seems to be due to damage of bifrontal and right limbic and temporal regions, mainly in the right hemisphere. Objectives To review the pathologies associated to Capgras Syndrome and the relevance of the differential diagnosis Methods 53-year-old female was admitted due to great sadness, crying, social withdrawal and severe paranoid concerns over the last month. Follow-up in Mental Health since 2014, because of anxious depression. After her mother’s death, she felt being followed because of old faults. Since then, low dosis of antipsychotics were used. Now she is afraid of being harmed in relation to petty thefts she committed over 15 years ago. In recent days, she has been noticing small details indicating that her family members have been impersonated by strangers, showing anguish regarding their whereabouts. Results During her admission, high doses of antidepresants and paliperidone 6 mg/day were used with the complete disappearance of Capgras Syndrome and her anguish. Mild guilty thoughts were present after her discharge. That is why she was diagnosed with psychotic depression. Conclusions Capgras syndrome can be encountered in primary psychiatric diagnosis (particularly in schizophrenia and mood disorders) – where an organic element may exist in about a third of all cases – or secondary to organic disorders or medication-induced, through to overt organic brain damage, particularly in neurodegenerative disease.

Introduction Cross-sectional studies report the high comorbility of substance use (SUD) with eating disorders (ED). This case report aims to describe a case of anorexia nervosa and alcohol use disorder in a 18 year old male. Objectives Based on the need to formulate protocols, we aim to conduct a systematic review on the recent literature research on this coexisting psychiatric disorders. Methods Relevant studies were sourced from published literature and reviewed. Results The prevalence of ED is higher in women than in men, with a ratio of 7:1; however it is the latter that present the most serious clinical pictures. It should be also noted that no all types of ED present the same comorbility, but rather those with bulimic symptoms are the ones that most resort to substance abuse, so the distinction between subtypes is highly relevant. Conclusions It is important that clinicians are aware of the severity of this combination and the need for a specific and careful management. Also important to taking into account the limited bibliography on the subject, it is especially important to expand research. Disclosure No significant relationships.

Introduction Acute and transient psychotic disorders are a rare condition entity as the sudden appearance of affective, confusional symptoms and paranoia triggered by some psychological trauma. The current pandemic caused by COVID-19 is an important psychological stressor that could favor the appearance of acute psychotic disorders. Several studies have been recently published proposing that the multifactorial stress associated with lockdown could function as a catalyst for acute psychotic disorders. Objectives To present a case of a brief psychotic disorder during the national lockdown in Spain and to review the literature about the relationship between the current pandemic and psychosis. Methods We will present a case report and a literature review. Results We report a case of a 27-year-old woman, with no previous psychiatric history. Three weeks after the start of Spain lockdown sudden symptoms appeared with psychomotor restlessness, confused speech, emotional lability, thought blocking and persecutory and referential delusions. Physical exam, blood analysis and cerebral CT scan with no alterations. Treatment was performed with aripiprazole 10 mg and lorazepam 1 mg daily with clinical improvement in one weeks. She was diagnosed of Acute transient psychotic disorder. Conclusions Stressful life events that can trigger psychosis in vulnerable individuals and the current pandemic and lockdown context could favor the appearance of acute psychotic disorders. The case reported here is in line with other current studies that show a preliminary intuition of this trend.

Introduction The compartment syndrome is a pathological condition characterized by a decrease, or even interruption, of the microcirculation within a soft tissue compartment. There have been a few cases reported about compartment syndrome due to a suicide attempt. Objectives To present an unusual complication of an autolytic attempt Methods A descriptive study of a clinical case and literature review Results A 49-year-old woman, divorced. With no psychiatric history and no somatic antecedents. Comes to the hospital after been found lying face down on the bathroom’s floor for 48 hours, next to her two empty blister packs of lorazepam and naproxen. Her partner says they argued two days ago. Brain CT: with no abnormalities. Blood analysis: metabolic acidosis with rhabdomyolysis and kidney failure. She presents ischemic injuries in both inferior extremities with right food ischemia and with no pedal pulses. Compartment syndrome is diagnosed, being necessary a bilateral fasciotomy and later a right lower extremity amputation. Initiates referral from Vascular Surgery for self-poisoning. She refers to low mood and mild anxiety due to work and relationship issues/problems. She accepts that she self-poisoning only to attract her partner’s attention after the argument. The examination shows logical thought, emotional lability, good judgement, future-oriented without suicidal ideation. Clinical judgement: acute stress reaction. Conclusions The compartment syndrome is a rare complication of the suicide attempt. Our patient suffered a compartment syndrome lying on the bathroom’s floor for 48 consecutive hours without apparent trauma and no somatic antecedents. This syndrome could be developed by high naproxen and lorazepam intake. Disclosure No significant relationships.

Introduction Although schizophrenia and anorexia nervosa are very different disorders, when they occur in the same patient it can be difficult to distinguish whether the alterations in body image are due to psychotic symptoms or correspond to a comorbid eating disorder. It is also relevant to know how they can interact with each other. Objectives Presentation of a clinical case of anorexia nervosa in the context of a patient with a previous diagnosis of paranoid schizophrenia. Methods Bibliographic review of the relationship between schizophrenia and alterations in the perception of body image by searching for articles in Pubmed. Results We present a 48-year-old woman who resides with her mother and a sister. Diagnosed with paranoid schizophrenia and eating disorder. She had previously been admitted to hospital twice. Since 2004, she has been followed up in mental health consultations. The patient reports constant weight changes. A year ago she began to feel overweight and began to restrict her intake and to exercise, having lost 20 kg. She reports psychotic symptoms in the past, that she now denies. Various scales show moderate impact of weight on personal perception of psychosocial adjustment, an impulse to thinness and a significant distortion of body image, perceiving herself as heavier than she is and wishing she was lighter. Conclusions In schizophrenia, confusion in bodily experiences and states is not uncommon. The possible interactions between the symptoms of schizophrenia and anorexia nervosa complicate the adequate care of these patients. Further research on comorbidity of these two disorders is necessary.

Introduction Charles Bonnet syndrome (CBS) is characterized by the presence of visual hallucinations without other sensory-perceptual disturbances or evidence of organic mental disorder nor functional psychosis. Objectives Review differential diagnosis of BCS, searching articles in Pubmed. Methods 62-year-old woman, undergoing treatment with Sertraline and psychotherapy for three months because of anxious-depressive synthoms. Pathological myopia and retinal detachment in 2012, blind left eye, retaining 33% vision in the right eye. She comes to the emergency room feeling really anxious, she says that for a year now she has had the feeling that her husband is cheating on her with another woman, and she claims with certainty that she sees a woman in her bed at night, as well as flashes of light evidencing her presence. She has also begun to hear voices through the telephone wires. She and her family deny memory loss or other cognitive impairments. We performed a Nuclear Magnetic Resonance with normal results. Family claims good conygal relation until these synthoms began and no signs of cognitive impairment. Results The patient lives as real these hallucinations which haven´t appeared during admission. We started treatment with an antipsychotic and a benzodiazepine, with great improvement of anxiety and development of some insight. Executive impairment was observed. Conclusions The results obtained, make us think that, although our patient has an important visual loss, it is more a psychiatric pathology. Here lies the importance of a multidisciplinary approach among ophthalmologists, neurologists and psychiatrists in order to avoid misdiagnosis and that the patient can benefit from proper treatment. Disclosure No significant relationships.

Introduction We present the case of a patient with schizophrenia who presents with restriction of intake, fear of gaining weight and alteration in the way of perceiving herself in which we ask ourselves if these behavioral alterations are secondary to her diagnosis of schizophrenia to an anorexia nervosa independent of previous diagnosis. Objectives We propose to carry out a differential diagnosis of alterations in the perception of self-image in a patient with a diagnosis of schizophrenia. We suggest that these alterations may be secondary to alterations in the experience of the self present due to their psychosis. Methods In the differential diagnosis of the cause of alterations in self-image and fear of gaining weight, we rely on the psychiatric interview, the study of previous history and different scales: - Eating Disorders Inventory (EDI) - Gardner Body Image Assessment - Weight, body image and self-esteem scale E-PICA - IPASE scale Results In this patient in whom the differential diagnosis of the cause of her dietary restrictions and weight loss is proposed, there does not seem to be any psychotic symptoms that produce these alterations. Conclusions In the alterations in self-image in those psychotic patients, there is a doubt as to whether these could be secondary to alterations in the perception of the self typical of psychotic diseases or, on the contrary, be secondary to the spectrum of Eating Disorders.

Introduction Lithium is widely used in the treatment of the bipolar disorder. Once introduced, it is necessary to carry out an adequate control of the therapeutic range, since it is potentially toxic, and can affect various organs. Objectives To present the case of a patient suffering from lithium poisoning and to review the symptoms of lithium poisoning. Methods A descriptive study of a clinical case and review of the literature Results 49-year-old woman, married. Diagnosed with bipolar disorder. She went to the emergency room due to a low level of consciousness, kidney failure, trembling of the limbs, hyperthermia and leukocytosis. In the last two weeks, the patient has reduced her intake of food, not water, finding herself more and more shaky and less reactive. Lithium in blood at admission 1.71, so conventional dialysis was performed with a progressive decrease into 0.65. On examination, he is practically mutist, bradypsychia with a significant response latency. Clinical judgment: Accidental lithium poisoning. Conclusions The primary site of toxicity is the central nervous system and clinical manifestations vary from asymptomatic supratherapeutic drug concentrations to clinical toxicity such as confusion, ataxia, or seizures. Severe lithium neurotoxicity occurs almost exclusively in the context of chronic therapeutic administration of lithium and rarely results from acute ingestion of lithium, even in patients currently taking lithium. As such it is an iatrogenic illness, occurring in patients who have identifiable clinical risk factors: nephrogenic diabetes insipidus, older age, abnormal thyroid function and impaired renal function. Disclosure No significant relationships.

Background: Probable benign paroxysmal positional vertigo, spontaneously resolved (pBPPVsr), is a variant of benign paroxysmal positional vertigo (BPPV) in which there is no observable nystagmus and no vertigo with any positional maneuver. Objectives: To calculate the incidence pBPPVsr, compare the characteristics of the patients with pBPPVsr and BPPV not spontaneously resolved and describe the spontaneous resolution in the natural course of BPPV. Methods: Multicenter prospective descriptive study. During a one-year period, all patients with suspected BPPV that presented to the Neurotology Units of five participating centers were recruited. The incidence of pBPPVsr was calculated as a percentage of the total number of patients with BPPV. The prevalence of several variables was compared between pBPPVsr and BPPV not spontaneously resolved. The timing of spontaneous resolution was estimated using Kaplan-Meier curves. Results: 457 patients met the inclusion criteria. The incidence of pBPPVsr was 33.5%. It was significantly higher in males, in patients with normal bone mass and in patients who were not taking sulpiride. A rate of 18% of spontaneous resolution after the first month and 51% after the first year was found. This percentage did not change in a significant way after this moment. The curves for males, patients under 50 and patients with normal blood pressure decreased significantly faster. Conclusions: In our serie, BPPV spontaneously resolved in half of the patients with BPPV during the first year. This seemed to occur more commonly in males and could have been hindered by sulpiride intake, osteoporosis, advanced age and high blood pressure. Keywords: Benign paroxysmal positional vertigo, Probable benign paroxysmal positional vertigo, spontaneously resolved, Osteoporosis, Sulpiride, Hypertension

Under nitrogen starvation, Ustilago maydis forms lipid droplets (LDs). Although the dynamics of these organelles are known in the literature, the identity of the lipases implicated in their degradation is unknown. We determined lipase activity and identified the intracellular lipases expressed during growth under nitrogen starvation and YPD media by zymograms. The results showed that cytosolic extracts exhibited higher lipase activity when cells were grown in YPD. Under nitrogen starvation, lipase activity was not detected after 24 h of culture, resulting in lipid accumulation in LDs. This suggests that these lipases could be implicated in LD degradation. In the zymogram, two bands, one of 25 and the other of 37 kDa, presented lipase activity. The YPD extracts showed lipase activity in olive and almond oils, which contain triacylglycerols with mono and polyunsaturated fatty acids. This is the first report about U. maydis cytosolic lipases involved in LD degradation.

Diaphania hyalinata (Lepidoptera: Crambidae), popularly known as “melonworm moth”, is considered a main pest of the cucumber, and depending on the intensity of infestation, the damage can reach 100%. Herein, we report the predation of D. hyalinata larvae by seven social wasp species: Brachygastra lecheguana, Polybia dimidiata, Polybia ignobilis, Polybia liliacea, Protopolybia minutissima, Synoeca surinama and Synoeca virginea, and predation of D. hyalinata pupae by Polybia liliacea. We suggest that Polybia liliacea, should be considered as a potential biological control for cucumbers, due to its high index of captured prey and intense foraging activity.

Abstract Background Children who have suffered from critical illnesses that required treatment in a paediatric intensive care unit (PICU) have long-term physical and neurodevelopmental impairments. The mechanisms underlying this legacy remain largely unknown. In patients suffering from chronic diseases hallmarked by inflammation and oxidative stress, poor long-term outcome has been associated with shorter telomeres. Shortened telomeres have also been reported to result from excessive food consumption and/or unhealthy nutrition. We investigated whether critically ill children admitted to the PICU have shorter-than-normal telomeres, and whether early parenteral nutrition (PN) independently affects telomere length when adjusting for known determinants of telomere length. Methods Telomere length was quantified in leukocyte DNA from 342 healthy children and from 1148 patients who had been enrolled in the multicenter, randomised controlled trial (RCT), PEPaNIC. These patients were randomly allocated to initiation of PN within 24 h (early PN) or to withholding PN for one week in PICU (late PN). The impact of early PN versus late PN on the change in telomere length from the first to last PICU-day was investigated with multivariable linear regression analyses. Results Leukocyte telomeres were 6% shorter than normal upon PICU admission (median 1.625 (IQR 1.446–1.825) telomere/single-copy-gene ratio (T/S) units vs. 1.727 (1.547–1.915) T/S-units in healthy children (P

The effect of knots on protein stability and folding kinetics is not well understood. Here the authors combine optical tweezer experiments and calculations to experimentally determine the energy cost for knot formation, which indicates that knotted proteins evolved specific folding pathways because knot formation in unfolded chains is unfavorable.

Currently, the inappropriate disposal of plastic materials, such as polyethylene terephthalate (PET) wastes, is a major environmental problem since it can cause serious damage to the environment and contribute to the proliferation of pathogenic microorganisms. To reduce this accumulation, PET-type bottles have been recycled, and also explored in other applications such as the development of membranes. Thus, this research aims to develop electrospun microfiber membranes from PET wastes and evaluate their use as an air filter media. The solution concentrations varied from 20 to 12% wt% of PET wastes, which caused a reduction of the average fiber diameter by 60% (from 3.25 µm to 1.27 µm). The electrospun filter membranes showed high mechanical resistance (4 MPa), adequate permeability (4.4 × 10−8 m2), high porosity (96%), and provided a high collection efficiency (about 100%) and low-pressure drop (212 Pa, whose face velocity was 4.8 cm/s) for the removal of viable aerosol nanoparticles. It can include bacteria, fungi, and also viruses, mainly SARS-CoV-2 (about 100 nm). Therefore, the developed electrospun membranes can be applied as indoor air filters, where extremely clean air is needed (e.g., hospitals, clean zones of pharmaceutical and food industry, aircraft, among others).

Air pollution and solid pollution are considered global problems, and endanger human health mainly due to the emission of fine particulate matter released into the atmosphere and improper disposal of post-consumer plastic bottles. Therefore, it is urgent to develop filter media to effectively protect the public. The properties of plastics make them potential candidates for nanofiber mat formers due to their attractive structural and mechanical characteristics. This work aims to produce and evaluate novel PET electrospun fibers dispensed with the use of support materials to be used as filter media to remove nanoparticles from the air. The electrospinning process was carried out by changing the concentration of the polymer solution, the needle diameter, and the electrospinning processing time at two rotation speeds. The average diameters of the micro- and nanofibers of the filter media produced ranged from 3.25 μm to 0.65 μm and it was possible to conclude that, as the size of the fibers decreased, the mechanical strength increased from 3.2 to 4.5 MPa. In filtration tests, a collection efficiency of up to 99% with low-pressure drops (19.4 Pa) was obtained for nanoparticles, demonstrating high quality factor filter media, which could be applicable in gas filtration.

Spondyloarthritis (SpAs) are a group of chronic inflammatory diseases that affect joints and enthesis with a possible involvement of other districts such as skin, eye and bowel. In SpAs, the inflammatory process could lead to both erosive damage (as in peripheral joint involvement of psoriatic arthritis), or bone formation (as in ankylosing spondylitis) with a reduction in function and quality of life. Recently, Mesenchimal stem cells (MSCs) transplant was used in different diseases, including autoimmune and inflammatory diseases, with the aim of repairing tissue damage, exploiting their regenerative capacity. However, MSCs also proved to have an immune-modulatory capacity due to their interaction with the cells of the immune system. The aim of this brief paper was to review the possible pathogenic role and the new perspective of MSCs use in SpAs.

Serotonin 2C receptors (5HT2C) are involved in serotonin-driven dynamic equilibrium adjustments responsible for homeostatic stability in brain structures that modulate behavior and emotions. Single nucleotide polymorphisms (SNPs) from the serotonin 2C receptor gene (HTR2C) have been associated with several neurological and mental disorders, including abnormalities in cognitive and emotional processes. The aim of this study was to evaluate the association between the rs6318 SNP of the HTR2C gene and behavioral characteristics exhibited by children and adolescents based on the Child Behavior Checklist (CBCL/6-18) inventory. Eighty-five psychiatric outpatients between 8 and 18 years of age underwent genotyping of the rs6318 SNP. The CBCL/6-18 scale was administered to their caregivers. The chi-squared test was used to assess differences in the frequency of C and G alleles of the rs6318 SNP relative to the grouped CBCL/6-18 scores; significance level was 5%. The presence of the G allele of rs6318 was found to be associated with characteristics of aggressive behavior and social problems, and aggressive behavior was found to be associated with heterozygosis in females. These findings contribute to the identification of mental and behavioral phenotypes associated with gene expression.