Evaluation of hopelessness in patients with endometriosis / Evaluación de desesperanza en pacientes con endometriosis

Purpose: To explore the prevalence of hopelessness in patients diagnosed with endometriosis and how it may influence their relationships. Material and methods: Prospective–descriptive study among patients with a clinical and/or anatomopathological diagnosis of endometriosis. Demographic data (age, religion, educational level, marital status, occupation, etc.) and pain data have been processed. Pain associated with endometriosis has been evaluated with an analogue scale of pain. The Beck Hopelessness Scale (BHS) was used to determine the level of hopelessness. The results have been classified into 0–3 normal; 4–8 mild; 9–14 moderate and 15–20 severe. SPSS Statistics 26 has been used and the statistical significance has been stipulated at p<0.05. Results: One hundred and ten patients have been recruited with an average age of 39.8±7.09 years. The average on the Beck Hopelessness Scale is 5.08 with a SD 3.14. In our sample, we obtained that 38.2% of women experienced some level of hopelessness at the time the questionnaire was completed (mild=28.2%, moderate=9.1%, severe=0.9%). We found a significant relation between hopelessness and low income but not with regard to education, employment status or marital status. Regarding the pain experienced and its relation with hopelessness, we found that it was significantly connected to pain during urination and dyspareunia and not to chronic pelvic pain dysmenorrhea and dyschezia. Conclusion: Four out of ten patients with endometriosis experience hopelessness, mostly mildly. This hopelessness is influenced by demographic factors such as income level and also pain, specifically pain during intercourse and during urination.(AU)

Antecedentes: El objetivo es analizar la prevalencia de desesperanza en pacientes con endometriosis y cuáles pueden ser los factores relacionados con la misma. Material y método: Se ha desarrollado un estudio prospectivo descriptivo entre mujeres con diagnóstico clínico y/o anatomopatológico de endometriosis. Se recogieron datos demográficos junto al grado de dolor evaluado por la escala visual analógica. Para el estudio de la desesperanza se ha empleado la Escala de Desesperanza de Beck (BHS). Los resultados fueron clasificados en 0-3 normal; 4-8 leve; 9-14 moderado y de 15-20 como severa. El programa estadístico empleado fue Statistical Package for the Social Sciences (SPSS) 26 (IBM Corp, Armonk, NY, USA) y se estipuló la significancia estadística en p<0,05. Resultados: Un total de 110 pacientes fueron encuestadas con una edad media 39,8±7,09 años. La media obtenida en la escala es de 5,08 con una desviación estándar (DE) de 3,14. En nuestro estudio 38,2% de las participantes experimentaban desesperanza en algún grado (leve=28,2%, moderado=9,1%, severa=0,9%). Se ha encontrado una relación significativa entre la experimentación de desesperanza con usuarias con recursos económicos más bajos, pero no con la educación, situación laboral o estado civil. Con respecto al malestar experimentado, hemos observado una asociación con el provocado durante la micción o las relaciones sexuales, pero no con la disquecia, dismenorrea o el dolor pélvico crónico. Conclusión: Cuatro de cada 10 pacientes con endometriosis experimentan un grado de desesperanza, principalmente leve. Se relaciona con dispareunia y dolor en la micción, así como en mujeres con bajos recursos económicos.(AU)

Localization of aquaporin 1 water channel in the Schmidt-Lanterman incisures and the paranodal regions of the rat sciatic nerve.

Aquaporin 1 (AQP1) is a member of a family of small, integral membrane water-transporting proteins, which facilitate water movement across cell membranes in response to osmotic gradients. Several papers have studied the expression and function of the AQPs in the central nervous system. However, little is known about the AQPs in the peripheral nervous system (PNS). In the PNS, AQP1, AQP2 and AQP4 have been reported in both peripheral neurons and glial cells. In this work we studied the expression and localization of AQP1 in the rat sciatic nerve. We found that from the four AQPs we studied (AQP1, AQP2, AQP4 and AQP9) only AQP1 is expressed in the nerve by reverse transcription polymerase chain reaction (RT-PCR). AQP1 is also observed at the protein level by Western blot analysis. We also studied the localization of AQP1 in the sciatic nerve by immunohistochemistry. The results show that AQP1 is present in both myelinating and non-myelinating Schwann cells. In myelin internodes AQP1 is enriched in the Schmidt-Lanterman incisures and in some internodes it is also present in the abaxonal membrane. At the nodes of Ranvier, AQP1 co-localizes with actin in the paranodal regions of the nerve. Therefore, AQP1 might play an important role in myelin homeostasis maintaining the thermodynamic equilibrium across the plasma membrane in myelinated axons during electrical activity. Also the expression of AQP1 in non-myelinating Schwann cells supports the involvement of AQP1 in pain perception.

N-Carbamoyl-ß-alanine amidohydrolase from Agrobacterium tumefaciens C58: a promiscuous enzyme for the production of amino acids.

The availability of enzymes with a high promiscuity/specificity relationship permits the hydrolysis of several substrates with a view to obtaining a certain product or using one enzyme for several productive lines. N-Carbamoyl-ß-alanine amidohydrolase from Agrobacterium tumefaciens (Atßcar) has shown high versatility to hydrolyze different N-carbamoyl-, N-acetyl- and N-formyl-amino acids to produce different α, ß, γ and δ amino acids. We have calculated the promiscuity index for the enzyme, obtaining a value of 0.54, which indicates that it is a modestly promiscuous enzyme. Atßcar presented the highest probability of hydrolysis for N-carbamoyl-amino acids, being the enzyme more efficient for the production of α-amino acids. We have also demonstrated by mutagenesis, modelling, kinetic and binding experiments that W218 and A359 indirectly influence the plasticity of the enzyme due to interaction with the environment of R291, the key residue for catalytic activity.

Expression of interleukin-6 receptor alpha in normal and injured rat sciatic nerve.

Interleukin-6 (IL-6) is a pleiotropic cytokine synthesized by many different cells after appropriate stimulation. IL-6 binds first to the interleukin-6 receptor alpha (IL6-Ralpha) and then this complex binds to the signal-transducing gp130 receptor, forming a functional hexameric receptor complex. We observed by Western blot analysis with anti-IL6-Ralpha two bands of approximately 80 kDa and approximately 110 kDa in the rat sciatic nerve, cerebral cortex, spleen, pancreas and liver, corresponding to the mature glycosylated form and possibly to the dimer of the non-glycosylated precursor protein. By immunohistochemistry, high levels of IL6-Ralpha expression are observed in non-myelinating Schwann cells. In myelinating Schwann cells IL6-Ralpha is present as discrete dots in the perinuclear region, in distinct membrane domains of the Schwann cell sheath and at the nodes of Ranvier, suggesting that IL6-Ralpha is clustered both on the axonal side of the node and within the Schwann cells. After sciatic nerve crush injury IL6-Ralpha is upregulated in denervated Schwann cells between the myelin ovoids during the period of Schwann cell proliferation. The expression of IL6-Ralpha continues during the period of remyelination, suggesting that IL6-Ralpha might be involved in both Schwann cell proliferation and remyelination of the rat sciatic nerve.